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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.261 by root, Fri Apr 27 20:09:48 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;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
10	use IO::AIO ();	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
11	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
12	use Time::HiRes;	31	use Time::HiRes;
13	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
14	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
15		41
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
18		44
19	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		46
21	_init_vars;	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		48
23	our %COMMAND = ();	49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
24	our @EVENT;	58	our @EVENT;
25	our $LIBDIR = maps_directory "perl";
26		59
27	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
28	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
29	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
30		82
31	our %CFG;	83	our %CFG;
32		84
33	our $uptime;#d#	85	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	86	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	87
36	$UPTIME ||= time;	88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	binmode STDOUT;
		96	binmode STDERR;
		97
		98	# read virtual server time, if available
		99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		100	open my $fh, "<", "$LOCALDIR/runtime"
		101	or die "unable to read runtime file: $!";
		102	$RUNTIME = <$fh> + 0.;
		103	}
		104
		105	mkdir $_
		106	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		107
		108	our $EMERGENCY_POSITION;
		109
		110	sub cf::map::normalise;
37		111
38	#############################################################################	112	#############################################################################
39		113
40	=head2 GLOBAL VARIABLES	114	=head2 GLOBAL VARIABLES
41		115
…		…
43		117
44	=item $cf::UPTIME	118	=item $cf::UPTIME
45		119
46	The timestamp of the server start (so not actually an uptime).	120	The timestamp of the server start (so not actually an uptime).
47		121
48	=item $cf::LIBDIR	122	=item $cf::RUNTIME
49		123
50	The perl library directory, where extensions and cf-specific modules can	124	The time this server has run, starts at 0 and is increased by $cf::TICK on
51	be found. It will be added to C<@INC> automatically.	125	every server tick.
		126
		127	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		128	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		129	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		130
		131	Various directories - "/etc", read-only install directory, perl-library
		132	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		133	unique-items directory, player file directory, random maps directory and
		134	database environment.
		135
		136	=item $cf::NOW
		137
		138	The time of the last (current) server tick.
52		139
53	=item $cf::TICK	140	=item $cf::TICK
54		141
55	The interval between server ticks, in seconds.	142	The interval between server ticks, in seconds.
56		143
57	=item %cf::CFG	144	=item %cf::CFG
58		145
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	146	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	from wherever your confdir points to.	147	from wherever your confdir points to.
		148
		149	=item cf::wait_for_tick, cf::wait_for_tick_begin
		150
		151	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		152	returns directly I<after> the tick processing (and consequently, can only wake one process
		153	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
61		154
62	=back	155	=back
63		156
64	=cut	157	=cut
65		158
66	BEGIN {	159	BEGIN {
67	*CORE::GLOBAL::warn = sub {	160	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	161	my $msg = join "", @_;
		162
69	$msg .= "\n"	163	$msg .= "\n"
70	unless $msg =~ /\n$/;	164	unless $msg =~ /\n$/;
71		165
72	print STDERR "cfperl: $msg";	166	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		167
		168	utf8::encode $msg;
73	LOG llevError, "cfperl: $msg";	169	LOG llevError, $msg;
74	};	170	};
75	}	171	}
76		172
		173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		179
79	# we bless all objects into (empty) derived classes to force a method lookup	180	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	181	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	182	for my $pkg (qw(
		183	cf::global cf::attachable
		184	cf::object cf::object::player
		185	cf::client cf::player
		186	cf::arch cf::living
		187	cf::map cf::party cf::region
		188	)) {
82	no strict 'refs';	189	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	190	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	191	}
85		192
86	$Event::DIED = sub {	193	$Event::DIED = sub {
87	warn "error in event callback: @_";	194	warn "error in event callback: @_";
88	};	195	};
89		196
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	=head2 UTILITY FUNCTIONS	197	=head2 UTILITY FUNCTIONS
97		198
98	=over 4	199	=over 4
99		200
100	=cut	201	=item dumpval $ref
101		202
		203	=cut
		204
		205	sub dumpval {
		206	eval {
		207	local $SIG{__DIE__};
		208	my $d;
		209	if (1) {
		210	$d = new Data::Dumper([$_[0]], ["*var"]);
		211	$d->Terse(1);
		212	$d->Indent(2);
		213	$d->Quotekeys(0);
		214	$d->Useqq(1);
		215	#$d->Bless(...);
		216	$d->Seen($_[1]) if @_ > 1;
		217	$d = $d->Dump();
		218	}
		219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		220	$d
		221	} || "[unable to dump $_[0]: '$@']";
		222	}
		223
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
103		225
104	=item $ref = cf::from_json $json	226	=item $ref = cf::from_json $json
105		227
106	Converts a JSON string into the corresponding perl data structure.	228	Converts a JSON string into the corresponding perl data structure.
107		229
108	=cut
109
110	sub from_json($) {
111	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
112	JSON::Syck::Load $_[0]
113	}
114
115	=item $json = cf::to_json $ref	230	=item $json = cf::to_json $ref
116		231
117	Converts a perl data structure into its JSON representation.	232	Converts a perl data structure into its JSON representation.
118		233
119	=cut	234	=item cf::lock_wait $string
120		235
121	sub to_json($) {	236	Wait until the given lock is available. See cf::lock_acquire.
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	237
123	JSON::Syck::Dump $_[0]	238	=item my $lock = cf::lock_acquire $string
		239
		240	Wait until the given lock is available and then acquires it and returns
		241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		242	for example when the coroutine gets canceled), the lock is automatically
		243	returned.
		244
		245	Lock names should begin with a unique identifier (for example, cf::map::find
		246	uses map_find and cf::map::load uses map_load).
		247
		248	=item $locked = cf::lock_active $string
		249
		250	Return true if the lock is currently active, i.e. somebody has locked it.
		251
		252	=cut
		253
		254	our %LOCK;
		255
		256	sub lock_wait($) {
		257	my ($key) = @_;
		258
		259	# wait for lock, if any
		260	while ($LOCK{$key}) {
		261	push @{ $LOCK{$key} }, $Coro::current;
		262	Coro::schedule;
		263	}
		264	}
		265
		266	sub lock_acquire($) {
		267	my ($key) = @_;
		268
		269	# wait, to be sure we are not locked
		270	lock_wait $key;
		271
		272	$LOCK{$key} = [];
		273
		274	Coro::guard {
		275	# wake up all waiters, to be on the safe side
		276	$_->ready for @{ delete $LOCK{$key} };
		277	}
		278	}
		279
		280	sub lock_active($) {
		281	my ($key) = @_;
		282
		283	! ! $LOCK{$key}
		284	}
		285
		286	sub freeze_mainloop {
		287	return unless $TICK_WATCHER->is_active;
		288
		289	my $guard = Coro::guard {
		290	$TICK_WATCHER->start;
		291	};
		292	$TICK_WATCHER->stop;
		293	$guard
		294	}
		295
		296	=item cf::async { BLOCK }
		297
		298	Currently the same as Coro::async_pool, meaning you cannot use
		299	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		300	thing you are allowed to do is call C<prio> on it.
		301
		302	=cut
		303
		304	BEGIN { *async = \&Coro::async_pool }
		305
		306	=item cf::sync_job { BLOCK }
		307
		308	The design of crossfire+ requires that the main coro ($Coro::main) is
		309	always able to handle events or runnable, as crossfire+ is only partly
		310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		311
		312	If it must be done, put the blocking parts into C<sync_job>. This will run
		313	the given BLOCK in another coroutine while waiting for the result. The
		314	server will be frozen during this time, so the block should either finish
		315	fast or be very important.
		316
		317	=cut
		318
		319	sub sync_job(&) {
		320	my ($job) = @_;
		321
		322	if ($Coro::current == $Coro::main) {
		323	# this is the main coro, too bad, we have to block
		324	# till the operation succeeds, freezing the server :/
		325
		326	# TODO: use suspend/resume instead
		327	# (but this is cancel-safe)
		328	my $freeze_guard = freeze_mainloop;
		329
		330	my $busy = 1;
		331	my @res;
		332
		333	(async {
		334	@res = eval { $job->() };
		335	warn $@ if $@;
		336	undef $busy;
		337	})->prio (Coro::PRIO_MAX);
		338
		339	while ($busy) {
		340	Coro::cede or Event::one_event;
		341	}
		342
		343	wantarray ? @res : $res[0]
		344	} else {
		345	# we are in another coroutine, how wonderful, everything just works
		346
		347	$job->()
		348	}
		349	}
		350
		351	=item $coro = cf::async_ext { BLOCK }
		352
		353	Like async, but this coro is automatically being canceled when the
		354	extension calling this is being unloaded.
		355
		356	=cut
		357
		358	sub async_ext(&) {
		359	my $cb = shift;
		360
		361	my $coro = &Coro::async ($cb);
		362
		363	$coro->on_destroy (sub {
		364	delete $EXT_CORO{$coro+0};
		365	});
		366	$EXT_CORO{$coro+0} = $coro;
		367
		368	$coro
		369	}
		370
		371	sub write_runtime {
		372	my $guard = cf::lock_acquire "write_runtime";
		373
		374	my $runtime = "$LOCALDIR/runtime";
		375
		376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		377	or return;
		378
		379	my $value = $cf::RUNTIME + 90 + 10;
		380	# 10 is the runtime save interval, for a monotonic clock
		381	# 60 allows for the watchdog to kill the server.
		382
		383	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		384	and return;
		385
		386	# always fsync - this file is important
		387	aio_fsync $fh
		388	and return;
		389
		390	close $fh
		391	or return;
		392
		393	aio_rename "$runtime~", $runtime
		394	and return;
		395
		396	1
		397	}
		398
		399	=item cf::datalog type => key => value, ...
		400
		401	Log a datalog packet of the given type with the given key-value pairs.
		402
		403	=cut
		404
		405	sub datalog($@) {
		406	my ($type, %kv) = @_;
		407	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
124	}	408	}
125		409
126	=back	410	=back
127		411
128	=cut	412	=cut
129		413
130	#############################################################################	414	#############################################################################
131		415
132	=head2 EVENTS AND OBJECT ATTACHMENTS	416	=head2 ATTACHABLE OBJECTS
		417
		418	Many objects in crossfire are so-called attachable objects. That means you can
		419	attach callbacks/event handlers (a collection of which is called an "attachment")
		420	to it. All such attachable objects support the following methods.
		421
		422	In the following description, CLASS can be any of C<global>, C<object>
		423	C<player>, C<client> or C<map> (i.e. the attachable objects in
		424	crossfire+).
133		425
134	=over 4	426	=over 4
135		427
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	428	=item $attachable->attach ($attachment, key => $value...)
149		429
150	=item $map->detach ($attachment)	430	=item $attachable->detach ($attachment)
151		431
152	Attach/detach a pre-registered attachment to a map.	432	Attach/detach a pre-registered attachment to a specific object and give it
		433	the specified key/value pairs as arguments.
153		434
154	=item $bool = $object->attached ($name)	435	Example, attach a minesweeper attachment to the given object, making it a
		436	10x10 minesweeper game:
155		437
156	=item $bool = $player->attached ($name)	438	$obj->attach (minesweeper => width => 10, height => 10);
157		439
158	=item $bool = $map->attached ($name)	440	=item $bool = $attachable->attached ($name)
159		441
160	Checks wether the named attachment is currently attached to the object.	442	Checks wether the named attachment is currently attached to the object.
161		443
162	=item cf::attach_global ...	444	=item cf::CLASS->attach ...
163		445
164	Attach handlers for global events.	446	=item cf::CLASS->detach ...
165		447
166	This and all following C<attach_*>-functions expect any number of the	448	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	449	CLASS. See the next function for an explanation of its arguments.
		450
		451	You can attach to global events by using the C<cf::global> class.
		452
		453	Example, log all player logins:
		454
		455	cf::player->attach (
		456	on_login => sub {
		457	my ($pl) = @_;
		458	...
		459	},
		460	);
		461
		462	Example, attach to the jeweler skill:
		463
		464	cf::object->attach (
		465	type => cf::SKILL,
		466	subtype => cf::SK_JEWELER,
		467	on_use_skill => sub {
		468	my ($sk, $ob, $part, $dir, $msg) = @_;
		469	...
		470	},
		471	);
		472
		473	=item cf::CLASS::attachment $name, ...
		474
		475	Register an attachment by C<$name> through which attachable objects of the
		476	given CLASS can refer to this attachment.
		477
		478	Some classes such as crossfire maps and objects can specify attachments
		479	that are attached at load/instantiate time, thus the need for a name.
		480
		481	These calls expect any number of the following handler/hook descriptions:
168		482
169	=over 4	483	=over 4
170		484
171	=item prio => $number	485	=item prio => $number
172		486
…		…
174	by another C<prio> setting). Lower priority handlers get executed	488	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	489	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	490	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	491	unless you know what you are doing.
178		492
		493	=item type => $type
		494
		495	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		496	given type of objects only (the additional parameter C<subtype> can be
		497	used to further limit to the given subtype).
		498
179	=item on_I<event> => \&cb	499	=item on_I<event> => \&cb
180		500
181	Call the given code reference whenever the named event happens (event is	501	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	502	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	503	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	512	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	513	object/class are recognised.
194		514
195	=back	515	=back
196		516
197	=item cf::attach_to_type $object_type, $subtype, ...	517	Example, define an attachment called "sockpuppet" that calls the given
		518	event handler when a monster attacks:
198		519
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	520	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	521	on_skill_attack => sub {
201	type.	522	my ($self, $victim) = @_;
202		523	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	524	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	525	}
424	}
425		526
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	527	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		528
452	Just because you have a perl object does not mean that the corresponding	529	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	530	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	531	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	532	can be used to test for existence of the C object part without causing an
456	exception.	533	exception.
457		534
		535	=cut
		536
		537	# the following variables are defined in .xs and must not be re-created
		538	our @CB_GLOBAL = (); # registry for all global events
		539	our @CB_ATTACHABLE = (); # registry for all attachables
		540	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		541	our @CB_PLAYER = ();
		542	our @CB_CLIENT = ();
		543	our @CB_TYPE = (); # registry for type (cf-object class) based events
		544	our @CB_MAP = ();
		545
		546	my %attachment;
		547
		548	sub cf::attachable::thawer_merge {
		549	# simply override everything except _meta
		550	local $_[0]{_meta};
		551	%{$_[0]} = %{$_[1]};
		552	}
		553
		554	sub _attach_cb($$$$) {
		555	my ($registry, $event, $prio, $cb) = @_;
		556
		557	use sort 'stable';
		558
		559	$cb = [$prio, $cb];
		560
		561	@{$registry->[$event]} = sort
		562	{ $a->[0] cmp $b->[0] }
		563	@{$registry->[$event] || []}, $cb;
		564	}
		565
		566	# hack
		567	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		568
		569	# attach handles attaching event callbacks
		570	# the only thing the caller has to do is pass the correct
		571	# registry (== where the callback attaches to).
		572	sub _attach {
		573	my ($registry, $klass, @arg) = @_;
		574
		575	my $object_type;
		576	my $prio = 0;
		577	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		578
		579	#TODO: get rid of this hack
		580	if ($attachable_klass{$klass}) {
		581	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		582	}
		583
		584	while (@arg) {
		585	my $type = shift @arg;
		586
		587	if ($type eq "prio") {
		588	$prio = shift @arg;
		589
		590	} elsif ($type eq "type") {
		591	$object_type = shift @arg;
		592	$registry = $CB_TYPE[$object_type] ||= [];
		593
		594	} elsif ($type eq "subtype") {
		595	defined $object_type or Carp::croak "subtype specified without type";
		596	my $object_subtype = shift @arg;
		597	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		598
		599	} elsif ($type eq "package") {
		600	my $pkg = shift @arg;
		601
		602	while (my ($name, $id) = each %cb_id) {
		603	if (my $cb = $pkg->can ($name)) {
		604	_attach_cb $registry, $id, $prio, $cb;
		605	}
		606	}
		607
		608	} elsif (exists $cb_id{$type}) {
		609	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		610
		611	} elsif (ref $type) {
		612	warn "attaching objects not supported, ignoring.\n";
		613
		614	} else {
		615	shift @arg;
		616	warn "attach argument '$type' not supported, ignoring.\n";
		617	}
		618	}
		619	}
		620
		621	sub _object_attach {
		622	my ($obj, $name, %arg) = @_;
		623
		624	return if exists $obj->{_attachment}{$name};
		625
		626	if (my $attach = $attachment{$name}) {
		627	my $registry = $obj->registry;
		628
		629	for (@$attach) {
		630	my ($klass, @attach) = @$_;
		631	_attach $registry, $klass, @attach;
		632	}
		633
		634	$obj->{$name} = \%arg;
		635	} else {
		636	warn "object uses attachment '$name' that is not available, postponing.\n";
		637	}
		638
		639	$obj->{_attachment}{$name} = undef;
		640	}
		641
		642	sub cf::attachable::attach {
		643	if (ref $_[0]) {
		644	_object_attach @_;
		645	} else {
		646	_attach shift->_attach_registry, @_;
		647	}
		648	};
		649
		650	# all those should be optimised
		651	sub cf::attachable::detach {
		652	my ($obj, $name) = @_;
		653
		654	if (ref $obj) {
		655	delete $obj->{_attachment}{$name};
		656	reattach ($obj);
		657	} else {
		658	Carp::croak "cannot, currently, detach class attachments";
		659	}
		660	};
		661
		662	sub cf::attachable::attached {
		663	my ($obj, $name) = @_;
		664
		665	exists $obj->{_attachment}{$name}
		666	}
		667
		668	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		669	eval "#line " . __LINE__ . " 'cf.pm'
		670	sub cf::\L$klass\E::_attach_registry {
		671	(\\\@CB_$klass, KLASS_$klass)
		672	}
		673
		674	sub cf::\L$klass\E::attachment {
		675	my \$name = shift;
		676
		677	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		678	}
		679	";
		680	die if $@;
		681	}
		682
		683	our $override;
		684	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		685
		686	sub override {
		687	$override = 1;
		688	@invoke_results = ();
		689	}
		690
		691	sub do_invoke {
		692	my $event = shift;
		693	my $callbacks = shift;
		694
		695	@invoke_results = ();
		696
		697	local $override;
		698
		699	for (@$callbacks) {
		700	eval { &{$_->[1]} };
		701
		702	if ($@) {
		703	warn "$@";
		704	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		705	override;
		706	}
		707
		708	return 1 if $override;
		709	}
		710
		711	0
		712	}
		713
		714	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		715
		716	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		717
		718	Generate an object-specific event with the given arguments.
		719
		720	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		721	removed in future versions), and there is no public API to access override
		722	results (if you must, access C<@cf::invoke_results> directly).
		723
458	=back	724	=back
459		725
460	=cut	726	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		727
466	#############################################################################	728	#############################################################################
467	# object support	729	# object support
468		730
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	731	sub reattach {
		732	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	733	my ($obj) = @_;
		734
		735	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		736
484	my $registry = $obj->registry;	737	my $registry = $obj->registry;
485		738
486	@$registry = ();	739	@$registry = ();
487		740
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	741	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		742
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	743	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	744	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	745	for (@$attach) {
493	my ($klass, @attach) = @$_;	746	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	747	_attach $registry, $klass, @attach;
495	}	748	}
496	} else {	749	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	750	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	751	}
499	}	752	}
500	}	753	}
501		754
502	sub object_freezer_save {	755	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	756	prio => -1000000,
		757	on_instantiate => sub {
		758	my ($obj, $data) = @_;
		759
		760	$data = from_json $data;
		761
		762	for (@$data) {
		763	my ($name, $args) = @$_;
		764
		765	$obj->attach ($name, %{$args || {} });
		766	}
		767	},
		768	on_reattach => \&reattach,
562	on_clone => sub {	769	on_clone => sub {
563	my ($src, $dst) = @_;	770	my ($src, $dst) = @_;
564		771
565	@{$dst->registry} = @{$src->registry};	772	@{$dst->registry} = @{$src->registry};
566		773
567	%$dst = %$src;	774	%$dst = %$src;
568		775
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	776	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	777	if exists $src->{_attachment};
571	},	778	},
572	;	779	);
		780
		781	sub object_freezer_save {
		782	my ($filename, $rdata, $objs) = @_;
		783
		784	sync_job {
		785	if (length $$rdata) {
		786	warn sprintf "saving %s (%d,%d)\n",
		787	$filename, length $$rdata, scalar @$objs;
		788
		789	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		790	chmod SAVE_MODE, $fh;
		791	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		792	aio_fsync $fh if $cf::USE_FSYNC;
		793	close $fh;
		794
		795	if (@$objs) {
		796	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		797	chmod SAVE_MODE, $fh;
		798	my $data = Storable::nfreeze { version => 1, objs => $objs };
		799	aio_write $fh, 0, (length $data), $data, 0;
		800	aio_fsync $fh if $cf::USE_FSYNC;
		801	close $fh;
		802	aio_rename "$filename.pst~", "$filename.pst";
		803	}
		804	} else {
		805	aio_unlink "$filename.pst";
		806	}
		807
		808	aio_rename "$filename~", $filename;
		809	} else {
		810	warn "FATAL: $filename~: $!\n";
		811	}
		812	} else {
		813	aio_unlink $filename;
		814	aio_unlink "$filename.pst";
		815	}
		816	}
		817	}
		818
		819	sub object_freezer_as_string {
		820	my ($rdata, $objs) = @_;
		821
		822	use Data::Dumper;
		823
		824	$$rdata . Dumper $objs
		825	}
		826
		827	sub object_thawer_load {
		828	my ($filename) = @_;
		829
		830	my ($data, $av);
		831
		832	(aio_load $filename, $data) >= 0
		833	or return;
		834
		835	unless (aio_stat "$filename.pst") {
		836	(aio_load "$filename.pst", $av) >= 0
		837	or return;
		838	$av = eval { (Storable::thaw $av)->{objs} };
		839	}
		840
		841	warn sprintf "loading %s (%d)\n",
		842	$filename, length $data, scalar @{$av || []};#d#
		843	return ($data, $av);
		844	}
573		845
574	#############################################################################	846	#############################################################################
575	# old plug-in events	847	# command handling &c
576		848
577	sub inject_event {	849	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		850
581	my $cb = $hook[$event_code]{$extension}	851	Register a callback for execution when the client sends the user command
582	or return;	852	$name.
583		853
584	&$cb	854	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		855
606	sub register_command {	856	sub register_command {
607	my ($name, $time, $cb) = @_;	857	my ($name, $cb) = @_;
608		858
609	my $caller = caller;	859	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	860	#warn "registering command '$name/$time' to '$caller'";
611		861
612	push @{ $command{$name} }, [$time, $cb, $caller];	862	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	863	}
		864
		865	=item cf::register_extcmd $name => \&callback($pl,$packet);
		866
		867	Register a callbackf ro execution when the client sends an extcmd packet.
		868
		869	If the callback returns something, it is sent back as if reply was being
		870	called.
		871
		872	=cut
615		873
616	sub register_extcmd {	874	sub register_extcmd {
617	my ($name, $cb) = @_;	875	my ($name, $cb) = @_;
618		876
619	my $caller = caller;	877	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	878	}
624		879
625	sub register {	880	cf::player->attach (
626	my ($base, $pkg) = @_;	881	on_command => sub {
		882	my ($pl, $name, $params) = @_;
627		883
628	#TODO	884	my $cb = $COMMAND{$name}
629	}	885	or return;
		886
		887	for my $cmd (@$cb) {
		888	$cmd->[1]->($pl->ob, $params);
		889	}
		890
		891	cf::override;
		892	},
		893	on_extcmd => sub {
		894	my ($pl, $buf) = @_;
		895
		896	my $msg = eval { from_json $buf };
		897
		898	if (ref $msg) {
		899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		900	if (my %reply = $cb->($pl, $msg)) {
		901	$pl->ext_reply ($msg->{msgid}, %reply);
		902	}
		903	}
		904	} else {
		905	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		906	}
		907
		908	cf::override;
		909	},
		910	);
630		911
631	sub load_extension {	912	sub load_extension {
632	my ($path) = @_;	913	my ($path) = @_;
633		914
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
635	my $base = $1;	916	my $base = $1;
636	my $pkg = $1;	917	my $pkg = $1;
637	$pkg =~ s/[^[:word:]]/_/g;	918	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";	919	$pkg = "ext::$pkg";
639		920
640	warn "loading '$path' into '$pkg'\n";	921	warn "... loading '$path' into '$pkg'\n";
641		922
642	open my $fh, "<:utf8", $path	923	open my $fh, "<:utf8", $path
643	or die "$path: $!";	924	or die "$path: $!";
644		925
645	my $source =	926	my $source =
646	"package $pkg; use strict; use utf8;\n"	927	"package $pkg; use strict; use utf8;\n"
647	. "#line 1 \"$path\"\n{\n"	928	. "#line 1 \"$path\"\n{\n"
648	. (do { local $/; <$fh> })	929	. (do { local $/; <$fh> })
649	. "\n};\n1";	930	. "\n};\n1";
650		931
651	eval $source	932	unless (eval $source) {
652	or die $@ ? "$path: $@\n"	933	my $msg = $@ ? "$path: $@\n"
653	: "extension disabled.\n";	934	: "extension disabled.\n";
654		935	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
655	push @exts, $pkg;	936	warn $@;
656	$ext_pkg{$base} = $pkg;	937	warn "mandatory extension failed to load, exiting.\n";
657		938	exit 1;
658	# no strict 'refs';	939	}
659	# @{"$pkg\::ISA"} = ext::;	940	die $@;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }	941	}
674		942
675	# remove commands	943	push @EXTS, $pkg;
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}
686	}
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}	944	}
702		945
703	sub load_extensions {	946	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	947	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	948	next unless -r $ext;
708	eval {	949	eval {
709	load_extension $ext;	950	load_extension $ext;
710	1	951	1
711	} or warn "$ext not loaded: $@";	952	} or warn "$ext not loaded: $@";
712	}	953	}
713	}	954	}
714		955
715	#############################################################################	956	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718		957
719	attach_to_players	958	=head2 CORE EXTENSIONS
720	on_extcmd => sub {	959
		960	Functions and methods that extend core crossfire objects.
		961
		962	=cut
		963
		964	package cf::player;
		965
		966	use Coro::AIO;
		967
		968	=head3 cf::player
		969
		970	=over 4
		971
		972	=item cf::player::find $login
		973
		974	Returns the given player object, loading it if necessary (might block).
		975
		976	=cut
		977
		978	sub playerdir($) {
		979	"$PLAYERDIR/"
		980	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		981	}
		982
		983	sub path($) {
		984	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		985
		986	(playerdir $login) . "/playerdata"
		987	}
		988
		989	sub find_active($) {
		990	$cf::PLAYER{$_[0]}
		991	and $cf::PLAYER{$_[0]}->active
		992	and $cf::PLAYER{$_[0]}
		993	}
		994
		995	sub exists($) {
		996	my ($login) = @_;
		997
		998	$cf::PLAYER{$login}
		999	or cf::sync_job { !aio_stat path $login }
		1000	}
		1001
		1002	sub find($) {
		1003	return $cf::PLAYER{$_[0]} || do {
		1004	my $login = $_[0];
		1005
		1006	my $guard = cf::lock_acquire "user_find:$login";
		1007
		1008	$cf::PLAYER{$_[0]} || do {
		1009	# rename old playerfiles to new ones
		1010	#TODO: remove when no longer required
		1011	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1012	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1013	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1014	aio_unlink +(playerdir $login) . "/$login.pl";
		1015
		1016	my $pl = load_pl path $login
		1017	or return;
		1018	$cf::PLAYER{$login} = $pl
		1019	}
		1020	}
		1021	}
		1022
		1023	sub save($) {
721	my ($pl, $buf) = @_;	1024	my ($pl) = @_;
722		1025
723	my $msg = eval { from_json $buf };	1026	return if $pl->{deny_save};
724		1027
725	if (ref $msg) {	1028	my $path = path $pl;
726	if (my $cb = $extcmd{$msg->{msgtype}}) {	1029	my $guard = cf::lock_acquire "user_save:$path";
727	if (my %reply = $cb->[0]->($pl, $msg)) {	1030
728	$pl->ext_reply ($msg->{msgid}, %reply);	1031	return if $pl->{deny_save};
729	}	1032
		1033	aio_mkdir playerdir $pl, 0770;
		1034	$pl->{last_save} = $cf::RUNTIME;
		1035
		1036	$pl->save_pl ($path);
		1037	Coro::cede;
		1038	}
		1039
		1040	sub new($) {
		1041	my ($login) = @_;
		1042
		1043	my $self = create;
		1044
		1045	$self->ob->name ($login);
		1046	$self->{deny_save} = 1;
		1047
		1048	$cf::PLAYER{$login} = $self;
		1049
		1050	$self
		1051	}
		1052
		1053	=item $pl->quit_character
		1054
		1055	Nukes the player without looking back. If logged in, the connection will
		1056	be destroyed. May block for a long time.
		1057
		1058	=cut
		1059
		1060	sub quit_character {
		1061	my ($pl) = @_;
		1062
		1063	my $name = $pl->ob->name;
		1064
		1065	$pl->{deny_save} = 1;
		1066	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1067
		1068	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1069	$pl->deactivate;
		1070	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1071	$pl->ns->destroy if $pl->ns;
		1072
		1073	my $path = playerdir $pl;
		1074	my $temp = "$path~$cf::RUNTIME~deleting~";
		1075	aio_rename $path, $temp;
		1076	delete $cf::PLAYER{$pl->ob->name};
		1077	$pl->destroy;
		1078
		1079	my $prefix = qr<^~\Q$name\E/>;
		1080
		1081	# nuke player maps
		1082	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1083
		1084	IO::AIO::aio_rmtree $temp;
		1085	}
		1086
		1087	=item $pl->kick
		1088
		1089	Kicks a player out of the game. This destroys the connection.
		1090
		1091	=cut
		1092
		1093	sub kick {
		1094	my ($pl, $kicker) = @_;
		1095
		1096	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1097	$pl->killer ("kicked");
		1098	$pl->ns->destroy;
		1099	}
		1100
		1101	=item cf::player::list_logins
		1102
		1103	Returns am arrayref of all valid playernames in the system, can take a
		1104	while and may block, so not sync_job-capable, ever.
		1105
		1106	=cut
		1107
		1108	sub list_logins {
		1109	my $dirs = aio_readdir $PLAYERDIR
		1110	or return [];
		1111
		1112	my @logins;
		1113
		1114	for my $login (@$dirs) {
		1115	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1116	aio_read $fh, 0, 512, my $buf, 0 or next;
		1117	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1118
		1119	utf8::decode $login;
		1120	push @logins, $login;
		1121	}
		1122
		1123	\@logins
		1124	}
		1125
		1126	=item $player->maps
		1127
		1128	Returns an arrayref of map paths that are private for this
		1129	player. May block.
		1130
		1131	=cut
		1132
		1133	sub maps($) {
		1134	my ($pl) = @_;
		1135
		1136	$pl = ref $pl ? $pl->ob->name : $pl;
		1137
		1138	my $files = aio_readdir playerdir $pl
		1139	or return;
		1140
		1141	my @paths;
		1142
		1143	for (@$files) {
		1144	utf8::decode $_;
		1145	next if /\.(?:pl|pst)$/;
		1146	next unless /^$PATH_SEP/o;
		1147
		1148	push @paths, cf::map::normalise "~$pl/$_";
		1149	}
		1150
		1151	\@paths
		1152	}
		1153
		1154	=item $player->ext_reply ($msgid, %msg)
		1155
		1156	Sends an ext reply to the player.
		1157
		1158	=cut
		1159
		1160	sub ext_reply($$%) {
		1161	my ($self, $id, %msg) = @_;
		1162
		1163	$msg{msgid} = $id;
		1164
		1165	$self->send ("ext " . cf::to_json \%msg);
		1166	}
		1167
		1168	=item $player->ext_event ($type, %msg)
		1169
		1170	Sends an ext event to the client.
		1171
		1172	=cut
		1173
		1174	sub ext_event($$%) {
		1175	my ($self, $type, %msg) = @_;
		1176
		1177	$self->ns->ext_event ($type, %msg);
		1178	}
		1179
		1180	=head3 cf::region
		1181
		1182	=over 4
		1183
		1184	=cut
		1185
		1186	package cf::region;
		1187
		1188	=item cf::region::find_by_path $path
		1189
		1190	Tries to decuce the probable region for a map knowing only its path.
		1191
		1192	=cut
		1193
		1194	sub find_by_path($) {
		1195	my ($path) = @_;
		1196
		1197	my ($match, $specificity);
		1198
		1199	for my $region (list) {
		1200	if ($region->match && $path =~ $region->match) {
		1201	($match, $specificity) = ($region, $region->specificity)
		1202	if $region->specificity > $specificity;
		1203	}
		1204	}
		1205
		1206	$match
		1207	}
		1208
		1209	=back
		1210
		1211	=head3 cf::map
		1212
		1213	=over 4
		1214
		1215	=cut
		1216
		1217	package cf::map;
		1218
		1219	use Fcntl;
		1220	use Coro::AIO;
		1221
		1222	use overload
		1223	'""' => \&as_string,
		1224	fallback => 1;
		1225
		1226	our $MAX_RESET = 3600;
		1227	our $DEFAULT_RESET = 3000;
		1228
		1229	sub generate_random_map {
		1230	my ($self, $rmp) = @_;
		1231	# mit "rum" bekleckern, nicht
		1232	$self->_create_random_map (
		1233	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1234	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1235	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1236	$rmp->{exit_on_final_map},
		1237	$rmp->{xsize}, $rmp->{ysize},
		1238	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1239	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1240	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1241	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1242	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1243	(cf::region::find $rmp->{region}), $rmp->{custom}
		1244	)
		1245	}
		1246
		1247	=item cf::map->register ($regex, $prio)
		1248
		1249	Register a handler for the map path matching the given regex at the
		1250	givne priority (higher is better, built-in handlers have priority 0, the
		1251	default).
		1252
		1253	=cut
		1254
		1255	sub register {
		1256	my (undef, $regex, $prio) = @_;
		1257	my $pkg = caller;
		1258
		1259	no strict;
		1260	push @{"$pkg\::ISA"}, __PACKAGE__;
		1261
		1262	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1263	}
		1264
		1265	# also paths starting with '/'
		1266	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1267
		1268	sub thawer_merge {
		1269	my ($self, $merge) = @_;
		1270
		1271	# we have to keep some variables in memory intact
		1272	local $self->{path};
		1273	local $self->{load_path};
		1274	local $self->{deny_save};
		1275	local $self->{deny_reset};
		1276
		1277	$self->SUPER::thawer_merge ($merge);
		1278	}
		1279
		1280	sub normalise {
		1281	my ($path, $base) = @_;
		1282
		1283	$path = "$path"; # make sure its a string
		1284
		1285	$path =~ s/\.map$//;
		1286
		1287	# map plan:
		1288	#
		1289	# /! non-realised random map exit (special hack!)
		1290	# {... are special paths that are not being touched
		1291	# ?xxx/... are special absolute paths
		1292	# ?random/... random maps
		1293	# /... normal maps
		1294	# ~user/... per-player map of a specific user
		1295
		1296	$path =~ s/$PATH_SEP/\//go;
		1297
		1298	# treat it as relative path if it starts with
		1299	# something that looks reasonable
		1300	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1301	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1302
		1303	$base =~ s{[^/]+/?$}{};
		1304	$path = "$base/$path";
		1305	}
		1306
		1307	for ($path) {
		1308	redo if s{//}{/};
		1309	redo if s{/\.?/}{/};
		1310	redo if s{/[^/]+/\.\./}{/};
		1311	}
		1312
		1313	$path
		1314	}
		1315
		1316	sub new_from_path {
		1317	my (undef, $path, $base) = @_;
		1318
		1319	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1320
		1321	$path = normalise $path, $base;
		1322
		1323	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1324	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1325	my $self = bless cf::map::new, $pkg;
		1326	$self->{path} = $path; $self->path ($path);
		1327	$self->init; # pass $1 etc.
		1328	return $self;
		1329	}
		1330	}
		1331
		1332	Carp::carp "unable to resolve path '$path' (base '$base').";
		1333	()
		1334	}
		1335
		1336	sub init {
		1337	my ($self) = @_;
		1338
		1339	$self
		1340	}
		1341
		1342	sub as_string {
		1343	my ($self) = @_;
		1344
		1345	"$self->{path}"
		1346	}
		1347
		1348	# the displayed name, this is a one way mapping
		1349	sub visible_name {
		1350	&as_string
		1351	}
		1352
		1353	# the original (read-only) location
		1354	sub load_path {
		1355	my ($self) = @_;
		1356
		1357	"$MAPDIR/$self->{path}.map"
		1358	}
		1359
		1360	# the temporary/swap location
		1361	sub save_path {
		1362	my ($self) = @_;
		1363
		1364	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1365	"$TMPDIR/$path.map"
		1366	}
		1367
		1368	# the unique path, undef == no special unique path
		1369	sub uniq_path {
		1370	my ($self) = @_;
		1371
		1372	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1373	"$UNIQUEDIR/$path"
		1374	}
		1375
		1376	# and all this just because we cannot iterate over
		1377	# all maps in C++...
		1378	sub change_all_map_light {
		1379	my ($change) = @_;
		1380
		1381	$_->change_map_light ($change)
		1382	for grep $_->outdoor, values %cf::MAP;
		1383	}
		1384
		1385	sub unlink_save {
		1386	my ($self) = @_;
		1387
		1388	utf8::encode (my $save = $self->save_path);
		1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1390	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1391	}
		1392
		1393	sub load_header_from($) {
		1394	my ($self, $path) = @_;
		1395
		1396	utf8::encode $path;
		1397	#aio_open $path, O_RDONLY, 0
		1398	# or return;
		1399
		1400	$self->_load_header ($path)
		1401	or return;
		1402
		1403	$self->{load_path} = $path;
		1404
		1405	1
		1406	}
		1407
		1408	sub load_header_orig {
		1409	my ($self) = @_;
		1410
		1411	$self->load_header_from ($self->load_path)
		1412	}
		1413
		1414	sub load_header_temp {
		1415	my ($self) = @_;
		1416
		1417	$self->load_header_from ($self->save_path)
		1418	}
		1419
		1420	sub prepare_temp {
		1421	my ($self) = @_;
		1422
		1423	$self->last_access ((delete $self->{last_access})
		1424	|| $cf::RUNTIME); #d#
		1425	# safety
		1426	$self->{instantiate_time} = $cf::RUNTIME
		1427	if $self->{instantiate_time} > $cf::RUNTIME;
		1428	}
		1429
		1430	sub prepare_orig {
		1431	my ($self) = @_;
		1432
		1433	$self->{load_original} = 1;
		1434	$self->{instantiate_time} = $cf::RUNTIME;
		1435	$self->last_access ($cf::RUNTIME);
		1436	$self->instantiate;
		1437	}
		1438
		1439	sub load_header {
		1440	my ($self) = @_;
		1441
		1442	if ($self->load_header_temp) {
		1443	$self->prepare_temp;
		1444	} else {
		1445	$self->load_header_orig
		1446	or return;
		1447	$self->prepare_orig;
		1448	}
		1449
		1450	$self->default_region (cf::region::find_by_path $self->{path})
		1451	unless $self->default_region;
		1452
		1453	1
		1454	}
		1455
		1456	sub find;
		1457	sub find {
		1458	my ($path, $origin) = @_;
		1459
		1460	$path = normalise $path, $origin && $origin->path;
		1461
		1462	cf::lock_wait "map_find:$path";
		1463
		1464	$cf::MAP{$path} || do {
		1465	my $guard = cf::lock_acquire "map_find:$path";
		1466	my $map = new_from_path cf::map $path
		1467	or return;
		1468
		1469	$map->{last_save} = $cf::RUNTIME;
		1470
		1471	$map->load_header
		1472	or return;
		1473
		1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1475	# doing this can freeze the server in a sync job, obviously
		1476	#$cf::WAIT_FOR_TICK->wait;
		1477	$map->reset;
		1478	undef $guard;
		1479	return find $path;
		1480	}
		1481
		1482	$cf::MAP{$path} = $map
		1483	}
		1484	}
		1485
		1486	sub pre_load { }
		1487	sub post_load { }
		1488
		1489	sub load {
		1490	my ($self) = @_;
		1491
		1492	local $self->{deny_reset} = 1; # loading can take a long time
		1493
		1494	my $path = $self->{path};
		1495
		1496	{
		1497	my $guard = cf::lock_acquire "map_load:$path";
		1498
		1499	return if $self->in_memory != cf::MAP_SWAPPED;
		1500
		1501	$self->in_memory (cf::MAP_LOADING);
		1502
		1503	$self->alloc;
		1504
		1505	$self->pre_load;
		1506	Coro::cede;
		1507
		1508	$self->_load_objects ($self->{load_path}, 1)
		1509	or return;
		1510
		1511	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1512	if delete $self->{load_original};
		1513
		1514	if (my $uniq = $self->uniq_path) {
		1515	utf8::encode $uniq;
		1516	if (aio_open $uniq, O_RDONLY, 0) {
		1517	$self->clear_unique_items;
		1518	$self->_load_objects ($uniq, 0);
730	}	1519	}
731	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
733	}	1520	}
734		1521
735	cf::override;	1522	Coro::cede;
		1523	# now do the right thing for maps
		1524	$self->link_multipart_objects;
		1525	$self->difficulty ($self->estimate_difficulty)
		1526	unless $self->difficulty;
		1527	Coro::cede;
		1528
		1529	unless ($self->{deny_activate}) {
		1530	$self->decay_objects;
		1531	$self->fix_auto_apply;
		1532	$self->update_buttons;
		1533	Coro::cede;
		1534	$self->set_darkness_map;
		1535	Coro::cede;
		1536	$self->activate;
		1537	}
		1538
		1539	$self->in_memory (cf::MAP_IN_MEMORY);
736	},	1540	}
737	;
738		1541
739	#############################################################################	1542	$self->post_load;
740	# load/save/clean perl data associated with a map	1543	}
741		1544
742	*cf::mapsupport::on_clean = sub {	1545	sub customise_for {
		1546	my ($self, $ob) = @_;
		1547
		1548	return find "~" . $ob->name . "/" . $self->{path}
		1549	if $self->per_player;
		1550
		1551	$self
		1552	}
		1553
		1554	# find and load all maps in the 3x3 area around a map
		1555	sub load_diag {
743	my ($map) = @_;	1556	my ($map) = @_;
744		1557
745	my $path = $map->tmpname;	1558	my @diag; # diagonal neighbours
746	defined $path or return;
747		1559
748	unlink "$path.pst";	1560	for (0 .. 3) {
749	};	1561	my $neigh = $map->tile_path ($_)
		1562	or next;
		1563	$neigh = find $neigh, $map
		1564	or next;
		1565	$neigh->load;
750		1566
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1567	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1568	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1569	}
752		1570
753	#############################################################################	1571	for (@diag) {
754	# load/save perl data associated with player->ob objects	1572	my $neigh = find @$_
755		1573	or next;
756	sub all_objects(@) {	1574	$neigh->load;
757	@_, map all_objects ($_->inv), @_	1575	}
758	}	1576	}
759		1577
760	# TODO: compatibility cruft, remove when no longer needed	1578	sub find_sync {
761	attach_to_players	1579	my ($path, $origin) = @_;
762	on_load => sub {
763	my ($pl, $path) = @_;
764		1580
765	for my $o (all_objects $pl->ob) {	1581	cf::sync_job { find $path, $origin }
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1582	}
767	$o->set_ob_key_value ("_perl_data");
768		1583
769	%$o = %{ Storable::thaw pack "H*", $value };	1584	sub do_load_sync {
		1585	my ($map) = @_;
		1586
		1587	cf::sync_job { $map->load };
		1588	}
		1589
		1590	our %MAP_PREFETCH;
		1591	our $MAP_PREFETCHER = undef;
		1592
		1593	sub find_async {
		1594	my ($path, $origin) = @_;
		1595
		1596	$path = normalise $path, $origin && $origin->{path};
		1597
		1598	if (my $map = $cf::MAP{$path}) {
		1599	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1600	}
		1601
		1602	undef $MAP_PREFETCH{$path};
		1603	$MAP_PREFETCHER ||= cf::async {
		1604	while (%MAP_PREFETCH) {
		1605	for my $path (keys %MAP_PREFETCH) {
		1606	my $map = find $path
		1607	or next;
		1608	$map->load;
		1609
		1610	delete $MAP_PREFETCH{$path};
770	}	1611	}
771	}	1612	}
		1613	undef $MAP_PREFETCHER;
		1614	};
		1615	$MAP_PREFETCHER->prio (6);
		1616
		1617	()
		1618	}
		1619
		1620	sub save {
		1621	my ($self) = @_;
		1622
		1623	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1624
		1625	$self->{last_save} = $cf::RUNTIME;
		1626
		1627	return unless $self->dirty;
		1628
		1629	my $save = $self->save_path; utf8::encode $save;
		1630	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1631
		1632	$self->{load_path} = $save;
		1633
		1634	return if $self->{deny_save};
		1635
		1636	local $self->{last_access} = $self->last_access;#d#
		1637
		1638	cf::async {
		1639	$_->contr->save for $self->players;
		1640	};
		1641
		1642	if ($uniq) {
		1643	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1644	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1645	} else {
		1646	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
772	},	1647	}
773	;	1648	}
774		1649
775	#############################################################################	1650	sub swap_out {
		1651	my ($self) = @_;
776		1652
777	=head2 CORE EXTENSIONS	1653	# save first because save cedes
		1654	$self->save;
778		1655
779	Functions and methods that extend core crossfire objects.	1656	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1657
		1658	return if $self->players;
		1659	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1660	return if $self->{deny_save};
		1661
		1662	$self->clear;
		1663	$self->in_memory (cf::MAP_SWAPPED);
		1664	}
		1665
		1666	sub reset_at {
		1667	my ($self) = @_;
		1668
		1669	# TODO: safety, remove and allow resettable per-player maps
		1670	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1671	return 1e99 if $self->{deny_reset};
		1672
		1673	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1674	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1675
		1676	$time + $to
		1677	}
		1678
		1679	sub should_reset {
		1680	my ($self) = @_;
		1681
		1682	$self->reset_at <= $cf::RUNTIME
		1683	}
		1684
		1685	sub reset {
		1686	my ($self) = @_;
		1687
		1688	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1689
		1690	return if $self->players;
		1691	return if $self->isa ("ext::map_per_player");#d#
		1692
		1693	warn "resetting map ", $self->path;#d#
		1694
		1695	$self->in_memory (cf::MAP_SWAPPED);
		1696
		1697	# need to save uniques path
		1698	unless ($self->{deny_save}) {
		1699	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1700
		1701	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1702	if $uniq;
		1703	}
		1704
		1705	delete $cf::MAP{$self->path};
		1706
		1707	$self->clear;
		1708
		1709	$_->clear_links_to ($self) for values %cf::MAP;
		1710
		1711	$self->unlink_save;
		1712	$self->destroy;
		1713	}
		1714
		1715	my $nuke_counter = "aaaa";
		1716
		1717	sub nuke {
		1718	my ($self) = @_;
		1719
		1720	delete $cf::MAP{$self->path};
		1721
		1722	$self->unlink_save;
		1723
		1724	bless $self, "cf::map";
		1725	delete $self->{deny_reset};
		1726	$self->{deny_save} = 1;
		1727	$self->reset_timeout (1);
		1728	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1729
		1730	$cf::MAP{$self->path} = $self;
		1731
		1732	$self->reset; # polite request, might not happen
		1733	}
		1734
		1735	=item cf::map::unique_maps
		1736
		1737	Returns an arrayref of paths of all shared maps that have
		1738	instantiated unique items. May block.
		1739
		1740	=cut
		1741
		1742	sub unique_maps() {
		1743	my $files = aio_readdir $UNIQUEDIR
		1744	or return;
		1745
		1746	my @paths;
		1747
		1748	for (@$files) {
		1749	utf8::decode $_;
		1750	next if /\.pst$/;
		1751	next unless /^$PATH_SEP/o;
		1752
		1753	push @paths, cf::map::normalise $_;
		1754	}
		1755
		1756	\@paths
		1757	}
		1758
		1759	package cf;
		1760
		1761	=back
		1762
		1763	=head3 cf::object
		1764
		1765	=cut
		1766
		1767	package cf::object;
780		1768
781	=over 4	1769	=over 4
782		1770
783	=item cf::player::exists $login	1771	=item $ob->inv_recursive
784		1772
785	Returns true when the given account exists.	1773	Returns the inventory of the object _and_ their inventories, recursively.
786		1774
787	=cut	1775	=cut
788		1776
789	sub cf::player::exists($) {	1777	sub inv_recursive_;
790	cf::player::find $_[0]	1778	sub inv_recursive_ {
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1779	map { $_, inv_recursive_ $_->inv } @_
792	}	1780	}
		1781
		1782	sub inv_recursive {
		1783	inv_recursive_ inv $_[0]
		1784	}
		1785
		1786	package cf;
		1787
		1788	=back
		1789
		1790	=head3 cf::object::player
		1791
		1792	=over 4
793		1793
794	=item $player_object->reply ($npc, $msg[, $flags])	1794	=item $player_object->reply ($npc, $msg[, $flags])
795		1795
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1797	can be C<undef>. Does the right thing when the player is currently in a
…		…
799		1799
800	=cut	1800	=cut
801		1801
802	# rough implementation of a future "reply" method that works	1802	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1803	# with dialog boxes.
		1804	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1805	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1806	my ($self, $npc, $msg, $flags) = @_;
806		1807
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1809
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1813	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1814	$self->message ($msg, $flags);
814	}	1815	}
815	}	1816	}
816		1817
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1818	=item $player_object->may ("access")
832		1819
833	Returns wether the given player is authorized to access resource "access"	1820	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1821	(e.g. "command_wizcast").
835		1822
…		…
842	(ref $cf::CFG{"may_$access"}	1829	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1831	: $cf::CFG{"may_$access"})
845	}	1832	}
846		1833
847	=cut	1834	=item $player_object->enter_link
848		1835
849	#############################################################################	1836	Freezes the player and moves him/her to a special map (C<{link}>).
		1837
		1838	The player should be reasonably safe there for short amounts of time. You
		1839	I<MUST> call C<leave_link> as soon as possible, though.
		1840
		1841	Will never block.
		1842
		1843	=item $player_object->leave_link ($map, $x, $y)
		1844
		1845	Moves the player out of the special C<{link}> map onto the specified
		1846	map. If the map is not valid (or omitted), the player will be moved back
		1847	to the location he/she was before the call to C<enter_link>, or, if that
		1848	fails, to the emergency map position.
		1849
		1850	Might block.
		1851
		1852	=cut
		1853
		1854	sub link_map {
		1855	unless ($LINK_MAP) {
		1856	$LINK_MAP = cf::map::find "{link}"
		1857	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1858	$LINK_MAP->load;
		1859	}
		1860
		1861	$LINK_MAP
		1862	}
		1863
		1864	sub cf::object::player::enter_link {
		1865	my ($self) = @_;
		1866
		1867	$self->deactivate_recursive;
		1868
		1869	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1870
		1871	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1872	if $self->map;
		1873
		1874	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1875	}
		1876
		1877	sub cf::object::player::leave_link {
		1878	my ($self, $map, $x, $y) = @_;
		1879
		1880	my $link_pos = delete $self->{_link_pos};
		1881
		1882	unless ($map) {
		1883	# restore original map position
		1884	($map, $x, $y) = @{ $link_pos || [] };
		1885	$map = cf::map::find $map;
		1886
		1887	unless ($map) {
		1888	($map, $x, $y) = @$EMERGENCY_POSITION;
		1889	$map = cf::map::find $map
		1890	or die "FATAL: cannot load emergency map\n";
		1891	}
		1892	}
		1893
		1894	($x, $y) = (-1, -1)
		1895	unless (defined $x) && (defined $y);
		1896
		1897	# use -1 or undef as default coordinates, not 0, 0
		1898	($x, $y) = ($map->enter_x, $map->enter_y)
		1899	if $x <=0 && $y <= 0;
		1900
		1901	$map->load;
		1902	$map->load_diag;
		1903
		1904	return unless $self->contr->active;
		1905	$self->activate_recursive;
		1906
		1907	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1908	$self->enter_map ($map, $x, $y);
		1909	}
		1910
		1911	cf::player->attach (
		1912	on_logout => sub {
		1913	my ($pl) = @_;
		1914
		1915	# abort map switching before logout
		1916	if ($pl->ob->{_link_pos}) {
		1917	cf::sync_job {
		1918	$pl->ob->leave_link
		1919	};
		1920	}
		1921	},
		1922	on_login => sub {
		1923	my ($pl) = @_;
		1924
		1925	# try to abort aborted map switching on player login :)
		1926	# should happen only on crashes
		1927	if ($pl->ob->{_link_pos}) {
		1928	$pl->ob->enter_link;
		1929	(async {
		1930	$pl->ob->reply (undef,
		1931	"There was an internal problem at your last logout, "
		1932	. "the server will try to bring you to your intended destination in a second.",
		1933	cf::NDI_RED);
		1934	# we need this sleep as the login has a concurrent enter_exit running
		1935	# and this sleep increases chances of the player not ending up in scorn
		1936	Coro::Timer::sleep 1;
		1937	$pl->ob->leave_link;
		1938	})->prio (2);
		1939	}
		1940	},
		1941	);
		1942
		1943	=item $player_object->goto ($path, $x, $y)
		1944
		1945	=cut
		1946
		1947	sub cf::object::player::goto {
		1948	my ($self, $path, $x, $y) = @_;
		1949
		1950	$self->enter_link;
		1951
		1952	(async {
		1953	my $map = eval {
		1954	my $map = cf::map::find $path;
		1955	$map = $map->customise_for ($self) if $map;
		1956	$map
		1957	} or
		1958	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1959
		1960	$self->leave_link ($map, $x, $y);
		1961	})->prio (1);
		1962	}
		1963
		1964	=item $player_object->enter_exit ($exit_object)
		1965
		1966	=cut
		1967
		1968	sub parse_random_map_params {
		1969	my ($spec) = @_;
		1970
		1971	my $rmp = { # defaults
		1972	xsize => (cf::rndm 15, 40),
		1973	ysize => (cf::rndm 15, 40),
		1974	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1975	#layout => string,
		1976	};
		1977
		1978	for (split /\n/, $spec) {
		1979	my ($k, $v) = split /\s+/, $_, 2;
		1980
		1981	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1982	}
		1983
		1984	$rmp
		1985	}
		1986
		1987	sub prepare_random_map {
		1988	my ($exit) = @_;
		1989
		1990	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1991
		1992	# all this does is basically replace the /! path by
		1993	# a new random map path (?random/...) with a seed
		1994	# that depends on the exit object
		1995
		1996	my $rmp = parse_random_map_params $exit->msg;
		1997
		1998	if ($exit->map) {
		1999	$rmp->{region} = $exit->region->name;
		2000	$rmp->{origin_map} = $exit->map->path;
		2001	$rmp->{origin_x} = $exit->x;
		2002	$rmp->{origin_y} = $exit->y;
		2003	}
		2004
		2005	$rmp->{random_seed} ||= $exit->random_seed;
		2006
		2007	my $data = cf::to_json $rmp;
		2008	my $md5 = Digest::MD5::md5_hex $data;
		2009	my $meta = "$RANDOMDIR/$md5.meta";
		2010
		2011	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2012	aio_write $fh, 0, (length $data), $data, 0;
		2013	undef $fh;
		2014	aio_rename "$meta~", $meta;
		2015
		2016	$exit->slaying ("?random/$md5");
		2017	$exit->msg (undef);
		2018	}
		2019	}
		2020
		2021	sub cf::object::player::enter_exit {
		2022	my ($self, $exit) = @_;
		2023
		2024	return unless $self->type == cf::PLAYER;
		2025
		2026	if ($exit->slaying eq "/!") {
		2027	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2028	# the problem is that $exit might not survive long enough
		2029	# so it needs to be done right now, right here
		2030	cf::sync_job { prepare_random_map $exit };
		2031	}
		2032
		2033	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2034	my $hp = $exit->stats->hp;
		2035	my $sp = $exit->stats->sp;
		2036
		2037	$self->enter_link;
		2038
		2039	(async {
		2040	$self->deactivate_recursive; # just to be sure
		2041	unless (eval {
		2042	$self->goto ($slaying, $hp, $sp);
		2043
		2044	1;
		2045	}) {
		2046	$self->message ("Something went wrong deep within the crossfire server. "
		2047	. "I'll try to bring you back to the map you were before. "
		2048	. "Please report this to the dungeon master!",
		2049	cf::NDI_UNIQUE | cf::NDI_RED);
		2050
		2051	warn "ERROR in enter_exit: $@";
		2052	$self->leave_link;
		2053	}
		2054	})->prio (1);
		2055	}
		2056
		2057	=head3 cf::client
		2058
		2059	=over 4
		2060
		2061	=item $client->send_drawinfo ($text, $flags)
		2062
		2063	Sends a drawinfo packet to the client. Circumvents output buffering so
		2064	should not be used under normal circumstances.
		2065
		2066	=cut
		2067
		2068	sub cf::client::send_drawinfo {
		2069	my ($self, $text, $flags) = @_;
		2070
		2071	utf8::encode $text;
		2072	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2073	}
		2074
		2075	=item $client->ext_event ($type, %msg)
		2076
		2077	Sends an exti event to the client.
		2078
		2079	=cut
		2080
		2081	sub cf::client::ext_event($$%) {
		2082	my ($self, $type, %msg) = @_;
		2083
		2084	$msg{msgtype} = "event_$type";
		2085	$self->send_packet ("ext " . cf::to_json \%msg);
		2086	}
		2087
		2088	=item $success = $client->query ($flags, "text", \&cb)
		2089
		2090	Queues a query to the client, calling the given callback with
		2091	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2092	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2093
		2094	Queries can fail, so check the return code. Or don't, as queries will become
		2095	reliable at some point in the future.
		2096
		2097	=cut
		2098
		2099	sub cf::client::query {
		2100	my ($self, $flags, $text, $cb) = @_;
		2101
		2102	return unless $self->state == ST_PLAYING
		2103	|| $self->state == ST_SETUP
		2104	|| $self->state == ST_CUSTOM;
		2105
		2106	$self->state (ST_CUSTOM);
		2107
		2108	utf8::encode $text;
		2109	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2110
		2111	$self->send_packet ($self->{query_queue}[0][0])
		2112	if @{ $self->{query_queue} } == 1;
		2113	}
		2114
		2115	cf::client->attach (
		2116	on_reply => sub {
		2117	my ($ns, $msg) = @_;
		2118
		2119	# this weird shuffling is so that direct followup queries
		2120	# get handled first
		2121	my $queue = delete $ns->{query_queue}
		2122	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2123
		2124	(shift @$queue)->[1]->($msg);
		2125	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2126
		2127	push @{ $ns->{query_queue} }, @$queue;
		2128
		2129	if (@{ $ns->{query_queue} } == @$queue) {
		2130	if (@$queue) {
		2131	$ns->send_packet ($ns->{query_queue}[0][0]);
		2132	} else {
		2133	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2134	}
		2135	}
		2136	},
		2137	);
		2138
		2139	=item $client->async (\&cb)
		2140
		2141	Create a new coroutine, running the specified callback. The coroutine will
		2142	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2143	or loss of connection).
		2144
		2145	=cut
		2146
		2147	sub cf::client::async {
		2148	my ($self, $cb) = @_;
		2149
		2150	my $coro = &Coro::async ($cb);
		2151
		2152	$coro->on_destroy (sub {
		2153	delete $self->{_coro}{$coro+0};
		2154	});
		2155
		2156	$self->{_coro}{$coro+0} = $coro;
		2157
		2158	$coro
		2159	}
		2160
		2161	cf::client->attach (
		2162	on_destroy => sub {
		2163	my ($ns) = @_;
		2164
		2165	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2166	},
		2167	);
		2168
		2169	=back
		2170
850		2171
851	=head2 SAFE SCRIPTING	2172	=head2 SAFE SCRIPTING
852		2173
853	Functions that provide a safe environment to compile and execute	2174	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	2175	snippets of perl code without them endangering the safety of the server
…		…
867		2188
868	# here we export the classes and methods available to script code	2189	# here we export the classes and methods available to script code
869		2190
870	=pod	2191	=pod
871		2192
872	The following fucntions and emthods are available within a safe environment:	2193	The following functions and methods are available within a safe environment:
873		2194
874	cf::object contr pay_amount pay_player	2195	cf::object contr pay_amount pay_player map
875	cf::object::player player	2196	cf::object::player player
876	cf::player peaceful	2197	cf::player peaceful
		2198	cf::map trigger
877		2199
878	=cut	2200	=cut
879		2201
880	for (	2202	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	2203	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	2204	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	2205	["cf::player" => qw(peaceful)],
		2206	["cf::map" => qw(trigger)],
884	) {	2207	) {
885	no strict 'refs';	2208	no strict 'refs';
886	my ($pkg, @funs) = @$_;	2209	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2210	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	2211	for @funs;
…		…
960	#############################################################################	2283	#############################################################################
961		2284
962	=head2 EXTENSION DATABASE SUPPORT	2285	=head2 EXTENSION DATABASE SUPPORT
963		2286
964	Crossfire maintains a very simple database for extension use. It can	2287	Crossfire maintains a very simple database for extension use. It can
965	currently store anything that can be serialised using Storable, which	2288	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
966	excludes objects.	2289	convert to/from binary).
967		2290
968	The parameter C<$family> should best start with the name of the extension	2291	The parameter C<$family> should best start with the name of the extension
969	using it, it should be unique.	2292	using it, it should be unique.
970		2293
971	=over 4	2294	=over 4
972		2295
973	=item $hashref = cf::db_get $family
974
975	Return a hashref for use by the extension C<$family>, which can be
976	modified. After modifications, you have to call C<cf::db_dirty> or
977	C<cf::db_sync>.
978
979	=item $value = cf::db_get $family => $key	2296	=item $value = cf::db_get $family => $key
980		2297
981	Returns a single value from the database	2298	Returns a single value from the database.
982
983	=item cf::db_put $family => $hashref
984
985	Stores the given family hashref into the database. Updates are delayed, if
986	you want the data to be synced to disk immediately, use C<cf::db_sync>.
987		2299
988	=item cf::db_put $family => $key => $value	2300	=item cf::db_put $family => $key => $value
989		2301
990	Stores the given C<$value> in the family hash. Updates are delayed, if you	2302	Stores the given C<$value> in the family.
991	want the data to be synced to disk immediately, use C<cf::db_sync>.
992
993	=item cf::db_dirty
994
995	Marks the database as dirty, to be updated at a later time.
996
997	=item cf::db_sync
998
999	Immediately write the database to disk I<if it is dirty>.
1000		2303
1001	=cut	2304	=cut
1002		2305
1003	our $DB;	2306	our $DB;
1004		2307
1005	{	2308	sub db_init {
1006	my $path = cf::localdir . "/database.pst";	2309	unless ($DB) {
		2310	$DB = BDB::db_create $DB_ENV;
1007		2311
1008	sub db_load() {	2312	cf::sync_job {
1009	warn "loading database $path\n";#d# remove later	2313	eval {
1010	$DB = stat $path ? Storable::retrieve $path : { };	2314	$DB->set_flags (BDB::CHKSUM);
1011	}
1012		2315
1013	my $pid;	2316	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1014		2317	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1015	sub db_save() {	2318	cf::cleanup "db_open(db): $!" if $!;
1016	warn "saving database $path\n";#d# remove later	2319	};
1017	waitpid $pid, 0 if $pid;	2320	cf::cleanup "db_open(db): $@" if $@;
1018	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;
1022	cf::_exit 0 if defined $pid;
1023	}	2321	};
1024	}
1025
1026	my $dirty;
1027
1028	sub db_sync() {
1029	db_save if $dirty;
1030	undef $dirty;
1031	}
1032
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1034	db_sync;
1035	});	2322	}
		2323	}
1036		2324
1037	sub db_dirty() {
1038	$dirty = 1;
1039	$idle->start;
1040	}
1041
1042	sub db_get($;$) {	2325	sub db_get($$) {
1043	@_ >= 2	2326	my $key = "$_[0]/$_[1]";
1044	? $DB->{$_[0]}{$_[1]}
1045	: ($DB->{$_[0]} ||= { })
1046	}
1047		2327
		2328	cf::sync_job {
		2329	BDB::db_get $DB, undef, $key, my $data;
		2330
		2331	$! ? ()
		2332	: $data
		2333	}
		2334	}
		2335
1048	sub db_put($$;$) {	2336	sub db_put($$$) {
1049	if (@_ >= 3) {	2337	BDB::dbreq_pri 4;
1050	$DB->{$_[0]}{$_[1]} = $_[2];	2338	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1051	} else {	2339	}
1052	$DB->{$_[0]} = $_[1];
1053	}
1054	db_dirty;
1055	}
1056		2340
1057	attach_global	2341	=item cf::cache $id => [$paths...], $processversion => $process
1058	prio => 10000,	2342
1059	on_cleanup => sub {	2343	Generic caching function that returns the value of the resource $id,
1060	db_sync;	2344	caching and regenerating as required.
		2345
		2346	This function can block.
		2347
		2348	=cut
		2349
		2350	sub cache {
		2351	my ($id, $src, $processversion, $process) = @_;
		2352
		2353	my $meta =
		2354	join "\x00",
		2355	$processversion,
		2356	map {
		2357	aio_stat $_
		2358	and Carp::croak "$_: $!";
		2359
		2360	($_, (stat _)[7,9])
		2361	} @$src;
		2362
		2363	my $dbmeta = db_get cache => "$id/meta";
		2364	if ($dbmeta ne $meta) {
		2365	# changed, we may need to process
		2366
		2367	my @data;
		2368	my $md5;
		2369
		2370	for (0 .. $#$src) {
		2371	0 <= aio_load $src->[$_], $data[$_]
		2372	or Carp::croak "$src->[$_]: $!";
1061	},	2373	}
		2374
		2375	# if processing is expensive, check
		2376	# checksum first
		2377	if (1) {
		2378	$md5 =
		2379	join "\x00",
		2380	$processversion,
		2381	map {
		2382	Coro::cede;
		2383	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2384	} 0.. $#$src;
		2385
		2386
		2387	my $dbmd5 = db_get cache => "$id/md5";
		2388	if ($dbmd5 eq $md5) {
		2389	db_put cache => "$id/meta", $meta;
		2390
		2391	return db_get cache => "$id/data";
		2392	}
		2393	}
		2394
		2395	my $t1 = Time::HiRes::time;
		2396	my $data = $process->(\@data);
		2397	my $t2 = Time::HiRes::time;
		2398
		2399	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2400
		2401	db_put cache => "$id/data", $data;
		2402	db_put cache => "$id/md5" , $md5;
		2403	db_put cache => "$id/meta", $meta;
		2404
		2405	return $data;
1062	;	2406	}
		2407
		2408	db_get cache => "$id/data"
1063	}	2409	}
		2410
		2411	=item fork_call { }, $args
		2412
		2413	Executes the given code block with the given arguments in a seperate
		2414	process, returning the results. Everything must be serialisable with
		2415	Coro::Storable. May, of course, block. Note that the executed sub may
		2416	never block itself or use any form of Event handling.
		2417
		2418	=cut
		2419
		2420	sub fork_call(&@) {
		2421	my ($cb, @args) = @_;
		2422
		2423	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2424	# or die "socketpair: $!";
		2425	pipe my $fh1, my $fh2
		2426	or die "pipe: $!";
		2427
		2428	if (my $pid = fork) {
		2429	close $fh2;
		2430
		2431	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2432	$res = Coro::Storable::thaw $res;
		2433
		2434	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2435
		2436	die $$res unless "ARRAY" eq ref $res;
		2437
		2438	return wantarray ? @$res : $res->[-1];
		2439	} else {
		2440	local $SIG{__WARN__};
		2441	eval {
		2442	local $SIG{__DIE__};
		2443	close $fh1;
		2444
		2445	my @res = eval { $cb->(@args) };
		2446	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2447	};
		2448
		2449	warn $@ if $@;
		2450	_exit 0;
		2451	}
		2452	}
		2453
		2454
1064		2455
1065	#############################################################################	2456	#############################################################################
1066	# the server's main()	2457	# the server's init and main functions
		2458
		2459	sub load_facedata($) {
		2460	my ($path) = @_;
		2461
		2462	warn "loading facedata from $path\n";
		2463
		2464	my $facedata;
		2465	0 < aio_load $path, $facedata
		2466	or die "$path: $!";
		2467
		2468	$facedata = Coro::Storable::thaw $facedata;
		2469
		2470	$facedata->{version} == 2
		2471	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2472
		2473	{
		2474	my $faces = $facedata->{faceinfo};
		2475
		2476	while (my ($face, $info) = each %$faces) {
		2477	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2478	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2479	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2480	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2481	Coro::cede;
		2482	}
		2483
		2484	while (my ($face, $info) = each %$faces) {
		2485	next unless $info->{smooth};
		2486	my $idx = cf::face::find $face
		2487	or next;
		2488	if (my $smooth = cf::face::find $info->{smooth}) {
		2489	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2490	} else {
		2491	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2492	}
		2493	Coro::cede;
		2494	}
		2495	}
		2496
		2497	{
		2498	my $anims = $facedata->{animinfo};
		2499
		2500	while (my ($anim, $info) = each %$anims) {
		2501	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2502	Coro::cede;
		2503	}
		2504
		2505	cf::anim::invalidate_all; # d'oh
		2506	}
		2507
		2508	1
		2509	}
		2510
		2511	sub reload_regions {
		2512	load_resource_file "$MAPDIR/regions"
		2513	or die "unable to load regions file\n";
		2514	}
		2515
		2516	sub reload_facedata {
		2517	load_facedata "$DATADIR/facedata"
		2518	or die "unable to load facedata\n";
		2519	}
		2520
		2521	sub reload_archetypes {
		2522	load_resource_file "$DATADIR/archetypes"
		2523	or die "unable to load archetypes\n";
		2524	}
		2525
		2526	sub reload_treasures {
		2527	load_resource_file "$DATADIR/treasures"
		2528	or die "unable to load treasurelists\n";
		2529	}
		2530
		2531	sub reload_resources {
		2532	warn "reloading resource files...\n";
		2533
		2534	reload_regions;
		2535	reload_facedata;
		2536	reload_archetypes;
		2537	reload_treasures;
		2538
		2539	warn "finished reloading resource files\n";
		2540	}
		2541
		2542	sub init {
		2543	reload_resources;
		2544	}
1067		2545
1068	sub cfg_load {	2546	sub cfg_load {
1069	open my $fh, "<:utf8", cf::confdir . "/config"	2547	open my $fh, "<:utf8", "$CONFDIR/config"
1070	or return;	2548	or return;
1071		2549
1072	local $/;	2550	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	2551	*CFG = YAML::Syck::Load <$fh>;
		2552
		2553	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2554
		2555	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2556	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2557
		2558	if (exists $CFG{mlockall}) {
		2559	eval {
		2560	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2561	and die "WARNING: m(un)lockall failed: $!\n";
		2562	};
		2563	warn $@ if $@;
		2564	}
1074	}	2565	}
1075		2566
1076	sub main {	2567	sub main {
		2568	# we must not ever block the main coroutine
		2569	local $Coro::idle = sub {
		2570	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2571	(async {
		2572	Event::one_event;
		2573	})->prio (Coro::PRIO_MAX);
		2574	};
		2575
1077	cfg_load;	2576	cfg_load;
1078	db_load;	2577	db_init;
1079	load_extensions;	2578	load_extensions;
		2579
		2580	$TICK_WATCHER->start;
1080	Event::loop;	2581	Event::loop;
1081	}	2582	}
1082		2583
1083	#############################################################################	2584	#############################################################################
1084	# initialisation	2585	# initialisation and cleanup
1085		2586
1086	sub _perl_reload(&) {	2587	# install some emergency cleanup handlers
		2588	BEGIN {
		2589	for my $signal (qw(INT HUP TERM)) {
		2590	Event->signal (
		2591	reentrant => 0,
		2592	data => WF_AUTOCANCEL,
		2593	signal => $signal,
		2594	prio => 0,
		2595	cb => sub {
		2596	cf::cleanup "SIG$signal";
		2597	},
		2598	);
		2599	}
		2600	}
		2601
		2602	sub emergency_save() {
		2603	my $freeze_guard = cf::freeze_mainloop;
		2604
		2605	warn "enter emergency perl save\n";
		2606
		2607	cf::sync_job {
		2608	# use a peculiar iteration method to avoid tripping on perl
		2609	# refcount bugs in for. also avoids problems with players
		2610	# and maps saved/destroyed asynchronously.
		2611	warn "begin emergency player save\n";
		2612	for my $login (keys %cf::PLAYER) {
		2613	my $pl = $cf::PLAYER{$login} or next;
		2614	$pl->valid or next;
		2615	$pl->save;
		2616	}
		2617	warn "end emergency player save\n";
		2618
		2619	warn "begin emergency map save\n";
		2620	for my $path (keys %cf::MAP) {
		2621	my $map = $cf::MAP{$path} or next;
		2622	$map->valid or next;
		2623	$map->save;
		2624	}
		2625	warn "end emergency map save\n";
		2626
		2627	warn "begin emergency database checkpoint\n";
		2628	BDB::db_env_txn_checkpoint $DB_ENV;
		2629	warn "end emergency database checkpoint\n";
		2630	};
		2631
		2632	warn "leave emergency perl save\n";
		2633	}
		2634
		2635	sub post_cleanup {
1087	my ($msg) = @_;	2636	my ($make_core) = @_;
1088		2637
1089	$msg->("reloading...");	2638	warn Carp::longmess "post_cleanup backtrace"
		2639	if $make_core;
		2640	}
1090		2641
1091	eval {	2642	sub do_reload_perl() {
1092	# cancel all watchers	2643	# can/must only be called in main
		2644	if ($Coro::current != $Coro::main) {
		2645	warn "can only reload from main coroutine";
		2646	return;
		2647	}
		2648
		2649	warn "reloading...";
		2650
		2651	warn "entering sync_job";
		2652
		2653	cf::sync_job {
		2654	cf::write_runtime; # external watchdog should not bark
		2655	cf::emergency_save;
		2656	cf::write_runtime; # external watchdog should not bark
		2657
		2658	warn "syncing database to disk";
		2659	BDB::db_env_txn_checkpoint $DB_ENV;
		2660
		2661	# if anything goes wrong in here, we should simply crash as we already saved
		2662
		2663	warn "cancelling all WF_AUTOCANCEL watchers";
1093	$_->cancel for Event::all_watchers;	2664	for (Event::all_watchers) {
		2665	$_->cancel if $_->data & WF_AUTOCANCEL;
		2666	}
1094		2667
1095	# unload all extensions	2668	warn "flushing outstanding aio requests";
1096	for (@exts) {	2669	for (;;) {
1097	$msg->("unloading <$_>");	2670	BDB::flush;
1098	unload_extension $_;	2671	IO::AIO::flush;
		2672	Coro::cede;
		2673	last unless IO::AIO::nreqs || BDB::nreqs;
		2674	warn "iterate...";
		2675	}
		2676
		2677	++$RELOAD;
		2678
		2679	warn "cancelling all extension coros";
		2680	$_->cancel for values %EXT_CORO;
		2681	%EXT_CORO = ();
		2682
		2683	warn "removing commands";
		2684	%COMMAND = ();
		2685
		2686	warn "removing ext commands";
		2687	%EXTCMD = ();
		2688
		2689	warn "unloading/nuking all extensions";
		2690	for my $pkg (@EXTS) {
		2691	warn "... unloading $pkg";
		2692
		2693	if (my $cb = $pkg->can ("unload")) {
		2694	eval {
		2695	$cb->($pkg);
		2696	1
		2697	} or warn "$pkg unloaded, but with errors: $@";
1099	}	2698	}
1100		2699
		2700	warn "... nuking $pkg";
		2701	Symbol::delete_package $pkg;
		2702	}
		2703
1101	# unload all modules loaded from $LIBDIR	2704	warn "unloading all perl modules loaded from $LIBDIR";
1102	while (my ($k, $v) = each %INC) {	2705	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2706	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2707
1105	$msg->("removing <$k>");	2708	warn "... unloading $k";
1106	delete $INC{$k};	2709	delete $INC{$k};
1107		2710
1108	$k =~ s/\.pm$//;	2711	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2712	$k =~ s/\//::/g;
1110		2713
…		…
1113	}	2716	}
1114		2717
1115	Symbol::delete_package $k;	2718	Symbol::delete_package $k;
1116	}	2719	}
1117		2720
1118	# sync database to disk
1119	cf::db_sync;
1120
1121	# get rid of safe::, as good as possible	2721	warn "getting rid of safe::, as good as possible";
1122	Symbol::delete_package "safe::$_"	2722	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2723	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2724
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"	2725	warn "unloading cf.pm \"a bit\"";
1129	delete $INC{"cf.pm"};	2726	delete $INC{"cf.pm"};
		2727	delete $INC{"cf/pod.pm"};
1130		2728
1131	# don't, removes xs symbols, too,	2729	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2730	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2731	#Symbol::delete_package __PACKAGE__;
1134		2732
1135	# reload cf.pm	2733	warn "unload completed, starting to reload now";
		2734
1136	$msg->("reloading cf.pm");	2735	warn "reloading cf.pm";
1137	require cf;	2736	require cf;
		2737	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2738
1139	# load config and database again	2739	warn "loading config and database again";
1140	cf::cfg_load;	2740	cf::cfg_load;
1141	cf::db_load;
1142		2741
1143	# load extensions	2742	warn "loading extensions";
1144	$msg->("load extensions");
1145	cf::load_extensions;	2743	cf::load_extensions;
1146		2744
1147	# reattach attachments to objects	2745	warn "reattaching attachments to objects/players";
1148	$msg->("reattach");	2746	_global_reattach; # objects, sockets
1149	_global_reattach;	2747	warn "reattaching attachments to maps";
		2748	reattach $_ for values %MAP;
		2749	warn "reattaching attachments to players";
		2750	reattach $_ for values %PLAYER;
		2751
		2752	warn "leaving sync_job";
		2753
		2754	1
		2755	} or do {
		2756	warn $@;
		2757	warn "error while reloading, exiting.";
		2758	exit 1;
1150	};	2759	};
1151	$msg->($@) if $@;
1152		2760
1153	$msg->("reloaded");	2761	warn "reloaded";
1154	};	2762	};
1155		2763
1156	sub perl_reload() {	2764	our $RELOAD_WATCHER; # used only during reload
1157	_perl_reload {	2765
1158	warn $_[0];	2766	sub reload_perl() {
1159	print "$_[0]\n";	2767	# doing reload synchronously and two reloads happen back-to-back,
		2768	# coro crashes during coro_state_free->destroy here.
		2769
		2770	$RELOAD_WATCHER ||= Event->timer (
		2771	reentrant => 0,
		2772	after => 0,
		2773	data => WF_AUTOCANCEL,
		2774	cb => sub {
		2775	do_reload_perl;
		2776	undef $RELOAD_WATCHER;
		2777	},
1160	};	2778	);
1161	}	2779	}
1162		2780
1163	register_command "perl-reload", 0, sub {	2781	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2782	my ($who, $arg) = @_;
1165		2783
1166	if ($who->flag (FLAG_WIZ)) {	2784	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2785	$who->message ("reloading server.");
1168	warn $_[0];	2786	async { reload_perl };
1169	$who->message ($_[0]);
1170	};
1171	}	2787	}
1172	};	2788	};
1173		2789
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2790	unshift @INC, $LIBDIR;
1177		2791
		2792	my $bug_warning = 0;
		2793
		2794	our @WAIT_FOR_TICK;
		2795	our @WAIT_FOR_TICK_BEGIN;
		2796
		2797	sub wait_for_tick {
		2798	return unless $TICK_WATCHER->is_active;
		2799	return if $Coro::current == $Coro::main;
		2800
		2801	my $signal = new Coro::Signal;
		2802	push @WAIT_FOR_TICK, $signal;
		2803	$signal->wait;
		2804	}
		2805
		2806	sub wait_for_tick_begin {
		2807	return unless $TICK_WATCHER->is_active;
		2808	return if $Coro::current == $Coro::main;
		2809
		2810	my $signal = new Coro::Signal;
		2811	push @WAIT_FOR_TICK_BEGIN, $signal;
		2812	$signal->wait;
		2813	}
		2814
1178	$TICK_WATCHER = Event->timer (	2815	$TICK_WATCHER = Event->timer (
		2816	reentrant => 0,
		2817	parked => 1,
1179	prio => 1,	2818	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2819	at => $NEXT_TICK || $TICK,
		2820	data => WF_AUTOCANCEL,
1182	cb => sub {	2821	cb => sub {
		2822	if ($Coro::current != $Coro::main) {
		2823	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2824	unless ++$bug_warning > 10;
		2825	return;
		2826	}
		2827
		2828	$NOW = Event::time;
		2829
1183	cf::server_tick; # one server iteration	2830	cf::server_tick; # one server iteration
1184		2831
1185	my $NOW = Event::time;	2832	$RUNTIME += $TICK;
1186	$NEXT_TICK += $TICK;	2833	$NEXT_TICK += $TICK;
1187		2834
		2835	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2836	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2837	Coro::async_pool {
		2838	write_runtime
		2839	or warn "ERROR: unable to write runtime file: $!";
		2840	};
		2841	}
		2842
		2843	# my $AFTER = Event::time;
		2844	# warn $AFTER - $NOW;#d#
		2845
1188	# if we are delayed by four ticks or more, skip them all	2846	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2847	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2848
1191	$TICK_WATCHER->at ($NEXT_TICK);	2849	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2850	$TICK_WATCHER->start;
		2851
		2852	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2853	$sig->send;
		2854	}
		2855	while (my $sig = shift @WAIT_FOR_TICK) {
		2856	$sig->send;
		2857	}
		2858
		2859	_post_tick;
1193	},	2860	},
1194	);	2861	);
1195		2862
		2863	{
		2864	BDB::max_poll_time $TICK * 0.1;
		2865	$BDB_POLL_WATCHER = Event->io (
		2866	reentrant => 0,
		2867	fd => BDB::poll_fileno,
		2868	poll => 'r',
		2869	prio => 0,
		2870	data => WF_AUTOCANCEL,
		2871	cb => \&BDB::poll_cb,
		2872	);
		2873	BDB::min_parallel 8;
		2874
		2875	BDB::set_sync_prepare {
		2876	my $status;
		2877	my $current = $Coro::current;
		2878	(
		2879	sub {
		2880	$status = $!;
		2881	$current->ready; undef $current;
		2882	},
		2883	sub {
		2884	Coro::schedule while defined $current;
		2885	$! = $status;
		2886	},
		2887	)
		2888	};
		2889
		2890	unless ($DB_ENV) {
		2891	$DB_ENV = BDB::db_env_create;
		2892
		2893	cf::sync_job {
		2894	eval {
		2895	BDB::db_env_open
		2896	$DB_ENV,
		2897	$BDBDIR,
		2898	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2899	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2900	0666;
		2901
		2902	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2903
		2904	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2905	$DB_ENV->set_lk_detect;
		2906	};
		2907
		2908	cf::cleanup "db_env_open(db): $@" if $@;
		2909	};
		2910	}
		2911	}
		2912
		2913	{
		2914	IO::AIO::min_parallel 8;
		2915
		2916	undef $Coro::AIO::WATCHER;
1196	IO::AIO::max_poll_time $TICK * 0.2;	2917	IO::AIO::max_poll_time $TICK * 0.1;
1197		2918	$AIO_POLL_WATCHER = Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	2919	reentrant => 0,
		2920	data => WF_AUTOCANCEL,
		2921	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2922	poll => 'r',
1200	prio => 5,	2923	prio => 6,
1201	cb => \&IO::AIO::poll_cb);	2924	cb => \&IO::AIO::poll_cb,
		2925	);
		2926	}
		2927
		2928	sub _log_backtrace {
		2929	my ($msg, @addr) = @_;
		2930
		2931	async {
		2932	my @bt = fork_call {
		2933	@addr = map { sprintf "%x", $_ } @addr;
		2934	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2935	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2936	or die "addr2line: $!";
		2937
		2938	my @funcs;
		2939	my @res = <$fh>;
		2940	chomp for @res;
		2941	while (@res) {
		2942	my ($func, $line) = splice @res, 0, 2, ();
		2943	push @funcs, "[$func] $line";
		2944	}
		2945
		2946	@funcs
		2947	};
		2948
		2949	$msg =~ s/\n//;
		2950
		2951	LOG llevInfo, "[ABT] $msg\n";
		2952	LOG llevInfo, "[ABT] $_\n" for @bt;
		2953	};
		2954	}
		2955
		2956	# load additional modules
		2957	use cf::pod;
		2958
		2959	END { cf::emergency_save }
1202		2960
1203	1	2961	1
1204		2962

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