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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.271 by root, Fri Jun 1 06:04:08 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
		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;
		29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
10	use Time::HiRes;	31	use Time::HiRes;
11	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
12	$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
13		41
14	use strict;	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
15		44
16	_reload_1;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		48
18	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
19	our @EVENT;	58	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		59
24	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(!)
25	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	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;
		82
		83	our %CFG;
		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		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	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
		115
		116	#############################################################################
		117
		118	=head2 GLOBAL VARIABLES
		119
		120	=over 4
		121
		122	=item $cf::UPTIME
		123
		124	The timestamp of the server start (so not actually an uptime).
		125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
		143
		144	=item $cf::TICK
		145
		146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
		157
		158	=item %cf::CFG
		159
		160	Configuration for the server, loaded from C</etc/crossfire/config>, or
		161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		168
		169	=back
		170
		171	=cut
27		172
28	BEGIN {	173	BEGIN {
29	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
31	$msg .= "\n"	177	$msg .= "\n"
32	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
33		179
34	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
36	};	184	};
37	}	185	}
38		186
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		193
75	# we bless all objects into (empty) derived classes to force a method lookup	194	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	195	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	196	for my $pkg (qw(
		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
78	no strict 'refs';	203	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	205	}
81		206
82	$Event::DIED = sub {	207	$Event::DIED = sub {
83	warn "error in event callback: @_";	208	warn "error in event callback: @_";
84	};	209	};
85		210
86	my %ext_pkg;	211	=head2 UTILITY FUNCTIONS
87	my @exts;	212
88	my @hook;	213	=over 4
89	my %command;	214
90	my %extcmd;	215	=item dumpval $ref
		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
		238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		239
		240	=item $ref = cf::from_json $json
		241
		242	Converts a JSON string into the corresponding perl data structure.
		243
		244	=item $json = cf::to_json $ref
		245
		246	Converts a perl data structure into its JSON representation.
		247
		248	=item cf::lock_wait $string
		249
		250	Wait until the given lock is available. See cf::lock_acquire.
		251
		252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
		382	my $cb = shift;
		383
		384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	IO::AIO::aio_utime $runtime, undef, undef;
		401
		402	my $guard = cf::lock_acquire "write_runtime";
		403
		404	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		405	or return;
		406
		407	my $value = $cf::RUNTIME + 90 + 10;
		408	# 10 is the runtime save interval, for a monotonic clock
		409	# 60 allows for the watchdog to kill the server.
		410
		411	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		412	and return;
		413
		414	# always fsync - this file is important
		415	aio_fsync $fh
		416	and return;
		417
		418	# touch it again to show we are up-to-date
		419	aio_utime $fh, undef, undef;
		420
		421	close $fh
		422	or return;
		423
		424	aio_rename "$runtime~", $runtime
		425	and return;
		426
		427	warn "runtime file written.\n";#d#
		428
		429	1
		430	}
		431
		432	=item cf::datalog type => key => value, ...
		433
		434	Log a datalog packet of the given type with the given key-value pairs.
		435
		436	=cut
		437
		438	sub datalog($@) {
		439	my ($type, %kv) = @_;
		440	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		441	}
		442
		443	=back
		444
		445	=cut
91		446
92	#############################################################################	447	#############################################################################
93	# utility functions
94		448
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	449	=head2 ATTACHABLE OBJECTS
96		450
97	sub from_json($) {	451	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	452	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	453	to it. All such attachable objects support the following methods.
100	}
101		454
102	sub to_json($) {	455	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	456	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	457	crossfire+).
105	}
106		458
107	#############################################################################	459	=over 4
108	# "new" plug-in system
109		460
110	=item $object->attach ($attachment, key => $value...)	461	=item $attachable->attach ($attachment, key => $value...)
111		462
112	Attach a pre-registered attachment to an object.	463	=item $attachable->detach ($attachment)
113		464
114	=item $player->attach ($attachment, key => $value...)	465	Attach/detach a pre-registered attachment to a specific object and give it
		466	the specified key/value pairs as arguments.
115		467
116	Attach a pre-registered attachment to a player.	468	Example, attach a minesweeper attachment to the given object, making it a
		469	10x10 minesweeper game:
117		470
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	471	$obj->attach (minesweeper => width => 10, height => 10);
119		472
120	Attach a pre-registered attachment to a map.	473	=item $bool = $attachable->attached ($name)
121		474
122	=item cf::attach_global ...	475	Checks wether the named attachment is currently attached to the object.
123		476
124	Attach handlers for global events.	477	=item cf::CLASS->attach ...
125		478
126	This and all following C<attach_*>-functions expect any number of the	479	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	480
		481	Define an anonymous attachment and attach it to all objects of the given
		482	CLASS. See the next function for an explanation of its arguments.
		483
		484	You can attach to global events by using the C<cf::global> class.
		485
		486	Example, log all player logins:
		487
		488	cf::player->attach (
		489	on_login => sub {
		490	my ($pl) = @_;
		491	...
		492	},
		493	);
		494
		495	Example, attach to the jeweler skill:
		496
		497	cf::object->attach (
		498	type => cf::SKILL,
		499	subtype => cf::SK_JEWELER,
		500	on_use_skill => sub {
		501	my ($sk, $ob, $part, $dir, $msg) = @_;
		502	...
		503	},
		504	);
		505
		506	=item cf::CLASS::attachment $name, ...
		507
		508	Register an attachment by C<$name> through which attachable objects of the
		509	given CLASS can refer to this attachment.
		510
		511	Some classes such as crossfire maps and objects can specify attachments
		512	that are attached at load/instantiate time, thus the need for a name.
		513
		514	These calls expect any number of the following handler/hook descriptions:
128		515
129	=over 4	516	=over 4
130		517
131	=item prio => $number	518	=item prio => $number
132		519
…		…
134	by another C<prio> setting). Lower priority handlers get executed	521	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	522	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	523	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	524	unless you know what you are doing.
138		525
		526	=item type => $type
		527
		528	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		529	given type of objects only (the additional parameter C<subtype> can be
		530	used to further limit to the given subtype).
		531
139	=item on_I<event> => \&cb	532	=item on_I<event> => \&cb
140		533
141	Call the given code reference whenever the named event happens (event is	534	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	535	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	536	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	545	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	546	object/class are recognised.
154		547
155	=back	548	=back
156		549
157	=item cf::attach_to_type $object_type, $subtype, ...	550	Example, define an attachment called "sockpuppet" that calls the given
		551	event handler when a monster attacks:
158		552
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	553	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	554	on_skill_attack => sub {
161	type.	555	my ($self, $victim) = @_;
		556	...
		557	}
		558	}
162		559
163	=item cf::attach_to_objects ...	560	=item $attachable->valid
164		561
165	Attach handlers to all objects. Do not use this except for debugging or	562	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	563	C-level object still exists. If you try to access an object that has no
167	the game.	564	valid C counterpart anymore you get an exception at runtime. This method
168		565	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	566	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		567
179	=cut	568	=cut
180		569
181	# the following variables are defined in .xs and must not be re-created	570	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	571	our @CB_GLOBAL = (); # registry for all global events
		572	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	573	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	574	our @CB_PLAYER = ();
		575	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	576	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	577	our @CB_MAP = ();
187		578
188	my %attachment;	579	my %attachment;
189		580
		581	sub cf::attachable::thawer_merge {
		582	# simply override everything except _meta
		583	local $_[0]{_meta};
		584	%{$_[0]} = %{$_[1]};
		585	}
		586
190	sub _attach_cb($\%$$$) {	587	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	588	my ($registry, $event, $prio, $cb) = @_;
192		589
193	use sort 'stable';	590	use sort 'stable';
194		591
195	$cb = [$prio, $cb];	592	$cb = [$prio, $cb];
196		593
197	@{$registry->[$event]} = sort	594	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	595	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	596	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	597	}
		598
		599	# hack
		600	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		601
204	# attach handles attaching event callbacks	602	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	603	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	604	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	605	sub _attach {
208	my ($registry, $klass, @arg) = @_;	606	my ($registry, $klass, @arg) = @_;
209		607
		608	my $object_type;
210	my $prio = 0;	609	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	610	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		611
		612	#TODO: get rid of this hack
		613	if ($attachable_klass{$klass}) {
		614	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		615	}
218		616
219	while (@arg) {	617	while (@arg) {
220	my $type = shift @arg;	618	my $type = shift @arg;
221		619
222	if ($type eq "prio") {	620	if ($type eq "prio") {
223	$prio = shift @arg;	621	$prio = shift @arg;
224		622
		623	} elsif ($type eq "type") {
		624	$object_type = shift @arg;
		625	$registry = $CB_TYPE[$object_type] ||= [];
		626
		627	} elsif ($type eq "subtype") {
		628	defined $object_type or Carp::croak "subtype specified without type";
		629	my $object_subtype = shift @arg;
		630	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		631
225	} elsif ($type eq "package") {	632	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	633	my $pkg = shift @arg;
227		634
228	while (my ($name, $id) = each %cb_id) {	635	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	636	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	637	_attach_cb $registry, $id, $prio, $cb;
231	}	638	}
232	}	639	}
233		640
234	} elsif (exists $cb_id{$type}) {	641	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	642	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		643
237	} elsif (ref $type) {	644	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	645	warn "attaching objects not supported, ignoring.\n";
239		646
240	} else {	647	} else {
241	shift @arg;	648	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	649	warn "attach argument '$type' not supported, ignoring.\n";
243	}	650	}
244	}	651	}
245
246	\%undo
247	}	652	}
248		653
249	sub _attach_attachment {	654	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	655	my ($obj, $name, %arg) = @_;
251		656
252	my $res;	657	return if exists $obj->{_attachment}{$name};
253		658
254	if (my $attach = $attachment{$name}) {	659	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	660	my $registry = $obj->registry;
256		661
257	for (@$attach) {	662	for (@$attach) {
258	my ($klass, @attach) = @$_;	663	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	664	_attach $registry, $klass, @attach;
260	}	665	}
261		666
262	$obj->{$name} = \%arg;	667	$obj->{$name} = \%arg;
263	} else {	668	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	669	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	670	}
266		671
267	push @{$obj->{_attachment}}, $name;	672	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	673	}
272		674
273	sub cf::object::attach {	675	sub cf::attachable::attach {
		676	if (ref $_[0]) {
		677	_object_attach @_;
		678	} else {
		679	_attach shift->_attach_registry, @_;
		680	}
		681	_recalc_want;
		682	};
		683
		684	# all those should be optimised
		685	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	686	my ($obj, $name) = @_;
275		687
276	_attach_attachment $obj, $name, %arg;	688	if (ref $obj) {
277	}	689	delete $obj->{_attachment}{$name};
		690	reattach ($obj);
		691	} else {
		692	Carp::croak "cannot, currently, detach class attachments";
		693	}
		694	_recalc_want;
		695	};
278		696
279	sub cf::player::attach {	697	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	698	my ($obj, $name) = @_;
281		699
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	700	exists $obj->{_attachment}{$name}
283	}	701	}
284		702
285	sub cf::map::attach {	703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	704	eval "#line " . __LINE__ . " 'cf.pm'
		705	sub cf::\L$klass\E::_attach_registry {
		706	(\\\@CB_$klass, KLASS_$klass)
		707	}
287		708
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	709	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	710	my \$name = shift;
316		711
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	712	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		713	}
		714	";
		715	die if $@;
318	}	716	}
319		717
320	our $override;	718	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	719	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		720
…		…
336	for (@$callbacks) {	734	for (@$callbacks) {
337	eval { &{$_->[1]} };	735	eval { &{$_->[1]} };
338		736
339	if ($@) {	737	if ($@) {
340	warn "$@";	738	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	739	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	740	override;
343	}	741	}
344		742
345	return 1 if $override;	743	return 1 if $override;
346	}	744	}
347		745
348	0	746	0
349	}	747	}
		748
		749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		750
		751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		752
		753	Generate an object-specific event with the given arguments.
		754
		755	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		756	removed in future versions), and there is no public API to access override
		757	results (if you must, access C<@cf::invoke_results> directly).
		758
		759	=back
		760
		761	=cut
350		762
351	#############################################################################	763	#############################################################################
352	# object support	764	# object support
353		765
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361	attach $obj, $name, %{$args || {} };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	768	my ($obj) = @_;
		769
		770	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		771
368	my $registry = $obj->registry;	772	my $registry = $obj->registry;
369		773
370	@$registry = ();	774	@$registry = ();
371		775
		776	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		777
372	for my $name (@{ $obj->{_attachment} }) {	778	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	779	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	780	for (@$attach) {
375	my ($klass, @attach) = @$_;	781	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	782	_attach $registry, $klass, @attach;
377	}	783	}
378	} else {	784	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	785	warn "object uses attachment '$name' that is not available, postponing.\n";
380	}	786	}
381	}	787	}
382	}	788	}
383		789
		790	cf::attachable->attach (
		791	prio => -1000000,
		792	on_instantiate => sub {
		793	my ($obj, $data) = @_;
		794
		795	$data = from_json $data;
		796
		797	for (@$data) {
		798	my ($name, $args) = @$_;
		799
		800	$obj->attach ($name, %{$args || {} });
		801	}
		802	},
		803	on_reattach => \&reattach,
		804	on_clone => sub {
		805	my ($src, $dst) = @_;
		806
		807	@{$dst->registry} = @{$src->registry};
		808
		809	%$dst = %$src;
		810
		811	%{$dst->{_attachment}} = %{$src->{_attachment}}
		812	if exists $src->{_attachment};
		813	},
		814	);
		815
384	sub object_freezer_save {	816	sub object_freezer_save {
385	my ($filename, $objs) = @_;	817	my ($filename, $rdata, $objs) = @_;
386		818
387	$filename .= ".pst";	819	sync_job {
		820	if (length $$rdata) {
		821	warn sprintf "saving %s (%d,%d)\n",
		822	$filename, length $$rdata, scalar @$objs;
388		823
389	if (@$objs) {	824	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	825	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	826	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	827	aio_fsync $fh if $cf::USE_FSYNC;
393	close $fh;	828	close $fh;
		829
		830	if (@$objs) {
		831	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		832	chmod SAVE_MODE, $fh;
		833	my $data = Storable::nfreeze { version => 1, objs => $objs };
		834	aio_write $fh, 0, (length $data), $data, 0;
		835	aio_fsync $fh if $cf::USE_FSYNC;
		836	close $fh;
		837	aio_rename "$filename.pst~", "$filename.pst";
		838	}
		839	} else {
		840	aio_unlink "$filename.pst";
		841	}
		842
394	rename "$filename~", $filename;	843	aio_rename "$filename~", $filename;
		844	} else {
		845	warn "FATAL: $filename~: $!\n";
		846	}
395	} else {	847	} else {
396	unlink $filename;	848	aio_unlink $filename;
		849	aio_unlink "$filename.pst";
		850	}
397	}	851	}
		852	}
		853
		854	sub object_freezer_as_string {
		855	my ($rdata, $objs) = @_;
		856
		857	use Data::Dumper;
		858
		859	$$rdata . Dumper $objs
398	}	860	}
399		861
400	sub object_thawer_load {	862	sub object_thawer_load {
401	my ($filename) = @_;	863	my ($filename) = @_;
402		864
403	open my $fh, "<:raw:perlio", "$filename.pst"	865	my ($data, $av);
		866
		867	(aio_load $filename, $data) >= 0
404	or return;	868	or return;
405		869
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	870	unless (aio_stat "$filename.pst") {
407	}	871	(aio_load "$filename.pst", $av) >= 0
408		872	or return;
409	attach_to_objects	873	$av = eval { (Storable::thaw $av)->{objs} };
410	prio => -1000000,
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	874	}
421	;	875
		876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
		878	return ($data, $av);
		879	}
422		880
423	#############################################################################	881	#############################################################################
424	# old plug-in events	882	# command handling &c
425		883
426	sub inject_event {	884	=item cf::register_command $name => \&callback($ob,$args);
427	my $extension = shift;
428	my $event_code = shift;
429		885
430	my $cb = $hook[$event_code]{$extension}	886	Register a callback for execution when the client sends the user command
431	or return;	887	$name.
432		888
433	&$cb	889	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		890
455	sub register_command {	891	sub register_command {
456	my ($name, $time, $cb) = @_;	892	my ($name, $cb) = @_;
457		893
458	my $caller = caller;	894	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	895	#warn "registering command '$name/$time' to '$caller'";
460		896
461	push @{ $command{$name} }, [$time, $cb, $caller];	897	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	898	}
		899
		900	=item cf::register_extcmd $name => \&callback($pl,$packet);
		901
		902	Register a callbackf ro execution when the client sends an extcmd packet.
		903
		904	If the callback returns something, it is sent back as if reply was being
		905	called.
		906
		907	=cut
464		908
465	sub register_extcmd {	909	sub register_extcmd {
466	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
467		911
468	my $caller = caller;	912	$EXTCMD{$name} = $cb;
469	#warn "registering extcmd '$name' to '$caller'";
470
471	$extcmd{$name} = [$cb, $caller];
472	}	913	}
473		914
474	sub register {	915	cf::player->attach (
475	my ($base, $pkg) = @_;	916	on_command => sub {
		917	my ($pl, $name, $params) = @_;
476		918
477	#TODO	919	my $cb = $COMMAND{$name}
478	}	920	or return;
		921
		922	for my $cmd (@$cb) {
		923	$cmd->[1]->($pl->ob, $params);
		924	}
		925
		926	cf::override;
		927	},
		928	on_extcmd => sub {
		929	my ($pl, $buf) = @_;
		930
		931	my $msg = eval { from_json $buf };
		932
		933	if (ref $msg) {
		934	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		935	if (my %reply = $cb->($pl, $msg)) {
		936	$pl->ext_reply ($msg->{msgid}, %reply);
		937	}
		938	}
		939	} else {
		940	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		941	}
		942
		943	cf::override;
		944	},
		945	);
479		946
480	sub load_extension {	947	sub load_extension {
481	my ($path) = @_;	948	my ($path) = @_;
482		949
483	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
484	my $base = $1;	951	my $base = $1;
485	my $pkg = $1;	952	my $pkg = $1;
486	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
487	$pkg = "ext::$pkg";	954	$pkg = "ext::$pkg";
488		955
489	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
490		957
491	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
492	or die "$path: $!";	959	or die "$path: $!";
493		960
494	my $source =	961	my $source =
495	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
496	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
498	. "\n};\n1";	965	. "\n};\n1";
499		966
500	eval $source	967	unless (eval $source) {
501	or die "$path: $@";	968	my $msg = $@ ? "$path: $@\n"
502		969	: "extension disabled.\n";
503	push @exts, $pkg;	970	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
504	$ext_pkg{$base} = $pkg;	971	warn $@;
505		972	warn "mandatory extension failed to load, exiting.\n";
506	# no strict 'refs';	973	exit 1;
507	# @{"$pkg\::ISA"} = ext::;	974	}
508		975	die $@;
509	register $base, $pkg;
510	}
511
512	sub unload_extension {
513	my ($pkg) = @_;
514
515	warn "removing extension $pkg\n";
516
517	# remove hooks
518	#TODO
519	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};
521	# }	976	}
522		977
523	# remove commands	978	push @EXTS, $pkg;
524	for my $name (keys %command) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
526
527	if (@cb) {
528	$command{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};
533	}
534	}
535
536	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
538	delete $extcmd{$name};
539	}
540
541	if (my $cb = $pkg->can ("unload")) {
542	eval {
543	$cb->($pkg);
544	1
545	} or warn "$pkg unloaded, but with errors: $@";
546	}
547
548	Symbol::delete_package $pkg;
549	}	979	}
550		980
551	sub load_extensions {	981	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;	983	next unless -r $ext;
556	eval {	984	eval {
557	load_extension $ext;	985	load_extension $ext;
558	1	986	1
559	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
560	}	988	}
561	}	989	}
562		990
563	sub _perl_reload(&) {	991	#############################################################################
		992
		993	=head2 CORE EXTENSIONS
		994
		995	Functions and methods that extend core crossfire objects.
		996
		997	=cut
		998
		999	package cf::player;
		1000
		1001	use Coro::AIO;
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
		1006
		1007	=item cf::player::find $login
		1008
		1009	Returns the given player object, loading it if necessary (might block).
		1010
		1011	=cut
		1012
		1013	sub playerdir($) {
		1014	"$PLAYERDIR/"
		1015	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1016	}
		1017
		1018	sub path($) {
		1019	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1020
		1021	(playerdir $login) . "/playerdata"
		1022	}
		1023
		1024	sub find_active($) {
		1025	$cf::PLAYER{$_[0]}
		1026	and $cf::PLAYER{$_[0]}->active
		1027	and $cf::PLAYER{$_[0]}
		1028	}
		1029
		1030	sub exists($) {
		1031	my ($login) = @_;
		1032
		1033	$cf::PLAYER{$login}
		1034	or cf::sync_job { !aio_stat path $login }
		1035	}
		1036
		1037	sub find($) {
		1038	return $cf::PLAYER{$_[0]} || do {
		1039	my $login = $_[0];
		1040
		1041	my $guard = cf::lock_acquire "user_find:$login";
		1042
		1043	$cf::PLAYER{$_[0]} || do {
		1044	# rename old playerfiles to new ones
		1045	#TODO: remove when no longer required
		1046	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1047	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1048	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1049	aio_unlink +(playerdir $login) . "/$login.pl";
		1050
		1051	my $pl = load_pl path $login
		1052	or return;
		1053	$cf::PLAYER{$login} = $pl
		1054	}
		1055	}
		1056	}
		1057
		1058	sub save($) {
		1059	my ($pl) = @_;
		1060
		1061	return if $pl->{deny_save};
		1062
		1063	my $path = path $pl;
		1064	my $guard = cf::lock_acquire "user_save:$path";
		1065
		1066	return if $pl->{deny_save};
		1067
		1068	aio_mkdir playerdir $pl, 0770;
		1069	$pl->{last_save} = $cf::RUNTIME;
		1070
		1071	$pl->save_pl ($path);
		1072	Coro::cede;
		1073	}
		1074
		1075	sub new($) {
		1076	my ($login) = @_;
		1077
		1078	my $self = create;
		1079
		1080	$self->ob->name ($login);
		1081	$self->{deny_save} = 1;
		1082
		1083	$cf::PLAYER{$login} = $self;
		1084
		1085	$self
		1086	}
		1087
		1088	=item $pl->quit_character
		1089
		1090	Nukes the player without looking back. If logged in, the connection will
		1091	be destroyed. May block for a long time.
		1092
		1093	=cut
		1094
		1095	sub quit_character {
		1096	my ($pl) = @_;
		1097
		1098	my $name = $pl->ob->name;
		1099
		1100	$pl->{deny_save} = 1;
		1101	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1102
		1103	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1104	$pl->deactivate;
		1105	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1106	$pl->ns->destroy if $pl->ns;
		1107
		1108	my $path = playerdir $pl;
		1109	my $temp = "$path~$cf::RUNTIME~deleting~";
		1110	aio_rename $path, $temp;
		1111	delete $cf::PLAYER{$pl->ob->name};
		1112	$pl->destroy;
		1113
		1114	my $prefix = qr<^~\Q$name\E/>;
		1115
		1116	# nuke player maps
		1117	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1118
		1119	IO::AIO::aio_rmtree $temp;
		1120	}
		1121
		1122	=item $pl->kick
		1123
		1124	Kicks a player out of the game. This destroys the connection.
		1125
		1126	=cut
		1127
		1128	sub kick {
		1129	my ($pl, $kicker) = @_;
		1130
		1131	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1132	$pl->killer ("kicked");
		1133	$pl->ns->destroy;
		1134	}
		1135
		1136	=item cf::player::list_logins
		1137
		1138	Returns am arrayref of all valid playernames in the system, can take a
		1139	while and may block, so not sync_job-capable, ever.
		1140
		1141	=cut
		1142
		1143	sub list_logins {
		1144	my $dirs = aio_readdir $PLAYERDIR
		1145	or return [];
		1146
		1147	my @logins;
		1148
		1149	for my $login (@$dirs) {
		1150	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1151	aio_read $fh, 0, 512, my $buf, 0 or next;
		1152	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1153
		1154	utf8::decode $login;
		1155	push @logins, $login;
		1156	}
		1157
		1158	\@logins
		1159	}
		1160
		1161	=item $player->maps
		1162
		1163	Returns an arrayref of map paths that are private for this
		1164	player. May block.
		1165
		1166	=cut
		1167
		1168	sub maps($) {
		1169	my ($pl) = @_;
		1170
		1171	$pl = ref $pl ? $pl->ob->name : $pl;
		1172
		1173	my $files = aio_readdir playerdir $pl
		1174	or return;
		1175
		1176	my @paths;
		1177
		1178	for (@$files) {
		1179	utf8::decode $_;
		1180	next if /\.(?:pl|pst)$/;
		1181	next unless /^$PATH_SEP/o;
		1182
		1183	push @paths, cf::map::normalise "~$pl/$_";
		1184	}
		1185
		1186	\@paths
		1187	}
		1188
		1189	=item $player->ext_reply ($msgid, %msg)
		1190
		1191	Sends an ext reply to the player.
		1192
		1193	=cut
		1194
		1195	sub ext_reply($$%) {
		1196	my ($self, $id, %msg) = @_;
		1197
		1198	$msg{msgid} = $id;
		1199
		1200	$self->send ("ext " . cf::to_json \%msg);
		1201	}
		1202
		1203	=item $player->ext_event ($type, %msg)
		1204
		1205	Sends an ext event to the client.
		1206
		1207	=cut
		1208
		1209	sub ext_event($$%) {
		1210	my ($self, $type, %msg) = @_;
		1211
		1212	$self->ns->ext_event ($type, %msg);
		1213	}
		1214
		1215	=head3 cf::region
		1216
		1217	=over 4
		1218
		1219	=cut
		1220
		1221	package cf::region;
		1222
		1223	=item cf::region::find_by_path $path
		1224
		1225	Tries to decuce the probable region for a map knowing only its path.
		1226
		1227	=cut
		1228
		1229	sub find_by_path($) {
		1230	my ($path) = @_;
		1231
		1232	my ($match, $specificity);
		1233
		1234	for my $region (list) {
		1235	if ($region->match && $path =~ $region->match) {
		1236	($match, $specificity) = ($region, $region->specificity)
		1237	if $region->specificity > $specificity;
		1238	}
		1239	}
		1240
		1241	$match
		1242	}
		1243
		1244	=back
		1245
		1246	=head3 cf::map
		1247
		1248	=over 4
		1249
		1250	=cut
		1251
		1252	package cf::map;
		1253
		1254	use Fcntl;
		1255	use Coro::AIO;
		1256
		1257	use overload
		1258	'""' => \&as_string,
		1259	fallback => 1;
		1260
		1261	our $MAX_RESET = 3600;
		1262	our $DEFAULT_RESET = 3000;
		1263
		1264	sub generate_random_map {
		1265	my ($self, $rmp) = @_;
		1266	# mit "rum" bekleckern, nicht
		1267	$self->_create_random_map (
		1268	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1269	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1270	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1271	$rmp->{exit_on_final_map},
		1272	$rmp->{xsize}, $rmp->{ysize},
		1273	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1274	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1275	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1276	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1277	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1278	(cf::region::find $rmp->{region}), $rmp->{custom}
		1279	)
		1280	}
		1281
		1282	=item cf::map->register ($regex, $prio)
		1283
		1284	Register a handler for the map path matching the given regex at the
		1285	givne priority (higher is better, built-in handlers have priority 0, the
		1286	default).
		1287
		1288	=cut
		1289
		1290	sub register {
		1291	my (undef, $regex, $prio) = @_;
		1292	my $pkg = caller;
		1293
		1294	no strict;
		1295	push @{"$pkg\::ISA"}, __PACKAGE__;
		1296
		1297	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1298	}
		1299
		1300	# also paths starting with '/'
		1301	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1302
		1303	sub thawer_merge {
		1304	my ($self, $merge) = @_;
		1305
		1306	# we have to keep some variables in memory intact
		1307	local $self->{path};
		1308	local $self->{load_path};
		1309	local $self->{deny_save};
		1310	local $self->{deny_reset};
		1311
		1312	$self->SUPER::thawer_merge ($merge);
		1313	}
		1314
		1315	sub normalise {
		1316	my ($path, $base) = @_;
		1317
		1318	$path = "$path"; # make sure its a string
		1319
		1320	$path =~ s/\.map$//;
		1321
		1322	# map plan:
		1323	#
		1324	# /! non-realised random map exit (special hack!)
		1325	# {... are special paths that are not being touched
		1326	# ?xxx/... are special absolute paths
		1327	# ?random/... random maps
		1328	# /... normal maps
		1329	# ~user/... per-player map of a specific user
		1330
		1331	$path =~ s/$PATH_SEP/\//go;
		1332
		1333	# treat it as relative path if it starts with
		1334	# something that looks reasonable
		1335	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1336	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1337
		1338	$base =~ s{[^/]+/?$}{};
		1339	$path = "$base/$path";
		1340	}
		1341
		1342	for ($path) {
		1343	redo if s{//}{/};
		1344	redo if s{/\.?/}{/};
		1345	redo if s{/[^/]+/\.\./}{/};
		1346	}
		1347
		1348	$path
		1349	}
		1350
		1351	sub new_from_path {
		1352	my (undef, $path, $base) = @_;
		1353
		1354	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1355
		1356	$path = normalise $path, $base;
		1357
		1358	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1359	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1360	my $self = bless cf::map::new, $pkg;
		1361	$self->{path} = $path; $self->path ($path);
		1362	$self->init; # pass $1 etc.
		1363	return $self;
		1364	}
		1365	}
		1366
		1367	Carp::carp "unable to resolve path '$path' (base '$base').";
		1368	()
		1369	}
		1370
		1371	sub init {
564	my ($msg) = @_;	1372	my ($self) = @_;
565		1373
566	$msg->("reloading...");	1374	$self
		1375	}
567		1376
568	eval {	1377	sub as_string {
569	# 1. cancel all watchers	1378	my ($self) = @_;
570	$_->cancel for Event::all_watchers;
571		1379
572	# 2. unload all extensions	1380	"$self->{path}"
573	for (@exts) {	1381	}
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577		1382
578	# 3. unload all modules loaded from $LIBDIR	1383	# the displayed name, this is a one way mapping
579	while (my ($k, $v) = each %INC) {	1384	sub visible_name {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1385	&as_string
		1386	}
581		1387
582	$msg->("removing <$k>");	1388	# the original (read-only) location
583	delete $INC{$k};	1389	sub load_path {
		1390	my ($self) = @_;
584		1391
585	$k =~ s/\.pm$//;	1392	"$MAPDIR/$self->{path}.map"
586	$k =~ s/\//::/g;	1393	}
587		1394
588	if (my $cb = $k->can ("unload_module")) {	1395	# the temporary/swap location
589	$cb->();	1396	sub save_path {
		1397	my ($self) = @_;
		1398
		1399	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1400	"$TMPDIR/$path.map"
		1401	}
		1402
		1403	# the unique path, undef == no special unique path
		1404	sub uniq_path {
		1405	my ($self) = @_;
		1406
		1407	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1408	"$UNIQUEDIR/$path"
		1409	}
		1410
		1411	# and all this just because we cannot iterate over
		1412	# all maps in C++...
		1413	sub change_all_map_light {
		1414	my ($change) = @_;
		1415
		1416	$_->change_map_light ($change)
		1417	for grep $_->outdoor, values %cf::MAP;
		1418	}
		1419
		1420	sub unlink_save {
		1421	my ($self) = @_;
		1422
		1423	utf8::encode (my $save = $self->save_path);
		1424	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1425	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1426	}
		1427
		1428	sub load_header_from($) {
		1429	my ($self, $path) = @_;
		1430
		1431	utf8::encode $path;
		1432	#aio_open $path, O_RDONLY, 0
		1433	# or return;
		1434
		1435	$self->_load_header ($path)
		1436	or return;
		1437
		1438	$self->{load_path} = $path;
		1439
		1440	1
		1441	}
		1442
		1443	sub load_header_orig {
		1444	my ($self) = @_;
		1445
		1446	$self->load_header_from ($self->load_path)
		1447	}
		1448
		1449	sub load_header_temp {
		1450	my ($self) = @_;
		1451
		1452	$self->load_header_from ($self->save_path)
		1453	}
		1454
		1455	sub prepare_temp {
		1456	my ($self) = @_;
		1457
		1458	$self->last_access ((delete $self->{last_access})
		1459	|| $cf::RUNTIME); #d#
		1460	# safety
		1461	$self->{instantiate_time} = $cf::RUNTIME
		1462	if $self->{instantiate_time} > $cf::RUNTIME;
		1463	}
		1464
		1465	sub prepare_orig {
		1466	my ($self) = @_;
		1467
		1468	$self->{load_original} = 1;
		1469	$self->{instantiate_time} = $cf::RUNTIME;
		1470	$self->last_access ($cf::RUNTIME);
		1471	$self->instantiate;
		1472	}
		1473
		1474	sub load_header {
		1475	my ($self) = @_;
		1476
		1477	if ($self->load_header_temp) {
		1478	$self->prepare_temp;
		1479	} else {
		1480	$self->load_header_orig
		1481	or return;
		1482	$self->prepare_orig;
		1483	}
		1484
		1485	$self->default_region (cf::region::find_by_path $self->{path})
		1486	unless $self->default_region;
		1487
		1488	1
		1489	}
		1490
		1491	sub find;
		1492	sub find {
		1493	my ($path, $origin) = @_;
		1494
		1495	$path = normalise $path, $origin && $origin->path;
		1496
		1497	cf::lock_wait "map_find:$path";
		1498
		1499	$cf::MAP{$path} || do {
		1500	my $guard = cf::lock_acquire "map_find:$path";
		1501	my $map = new_from_path cf::map $path
		1502	or return;
		1503
		1504	$map->{last_save} = $cf::RUNTIME;
		1505
		1506	$map->load_header
		1507	or return;
		1508
		1509	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1510	# doing this can freeze the server in a sync job, obviously
		1511	#$cf::WAIT_FOR_TICK->wait;
		1512	$map->reset;
		1513	undef $guard;
		1514	return find $path;
		1515	}
		1516
		1517	$cf::MAP{$path} = $map
		1518	}
		1519	}
		1520
		1521	sub pre_load { }
		1522	sub post_load { }
		1523
		1524	sub load {
		1525	my ($self) = @_;
		1526
		1527	local $self->{deny_reset} = 1; # loading can take a long time
		1528
		1529	my $path = $self->{path};
		1530
		1531	{
		1532	my $guard = cf::lock_acquire "map_load:$path";
		1533
		1534	return if $self->in_memory != cf::MAP_SWAPPED;
		1535
		1536	$self->in_memory (cf::MAP_LOADING);
		1537
		1538	$self->alloc;
		1539
		1540	$self->pre_load;
		1541	Coro::cede;
		1542
		1543	$self->_load_objects ($self->{load_path}, 1)
		1544	or return;
		1545
		1546	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1547	if delete $self->{load_original};
		1548
		1549	if (my $uniq = $self->uniq_path) {
		1550	utf8::encode $uniq;
		1551	if (aio_open $uniq, O_RDONLY, 0) {
		1552	$self->clear_unique_items;
		1553	$self->_load_objects ($uniq, 0);
590	}	1554	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601		1555	}
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604		1556
605	# don't, removes xs symbols, too,	1557	Coro::cede;
606	# and global variables created in xs	1558	# now do the right thing for maps
607	#Symbol::delete_package __PACKAGE__;	1559	$self->link_multipart_objects;
		1560	$self->difficulty ($self->estimate_difficulty)
		1561	unless $self->difficulty;
		1562	Coro::cede;
608		1563
609	# 7. reload cf.pm	1564	unless ($self->{deny_activate}) {
610	$msg->("reloading cf.pm");	1565	$self->decay_objects;
611	require cf;	1566	$self->fix_auto_apply;
		1567	$self->update_buttons;
		1568	Coro::cede;
		1569	$self->set_darkness_map;
		1570	Coro::cede;
		1571	$self->activate;
		1572	}
		1573
		1574	$self->in_memory (cf::MAP_IN_MEMORY);
		1575	}
		1576
		1577	$self->post_load;
		1578	}
		1579
		1580	sub customise_for {
		1581	my ($self, $ob) = @_;
		1582
		1583	return find "~" . $ob->name . "/" . $self->{path}
		1584	if $self->per_player;
		1585
		1586	$self
		1587	}
		1588
		1589	# find and load all maps in the 3x3 area around a map
		1590	sub load_diag {
		1591	my ($map) = @_;
		1592
		1593	my @diag; # diagonal neighbours
		1594
		1595	for (0 .. 3) {
		1596	my $neigh = $map->tile_path ($_)
		1597	or next;
		1598	$neigh = find $neigh, $map
		1599	or next;
		1600	$neigh->load;
		1601
		1602	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1603	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1604	}
		1605
		1606	for (@diag) {
		1607	my $neigh = find @$_
		1608	or next;
		1609	$neigh->load;
		1610	}
		1611	}
		1612
		1613	sub find_sync {
		1614	my ($path, $origin) = @_;
		1615
		1616	cf::sync_job { find $path, $origin }
		1617	}
		1618
		1619	sub do_load_sync {
		1620	my ($map) = @_;
		1621
		1622	cf::sync_job { $map->load };
		1623	}
		1624
		1625	our %MAP_PREFETCH;
		1626	our $MAP_PREFETCHER = undef;
		1627
		1628	sub find_async {
		1629	my ($path, $origin) = @_;
		1630
		1631	$path = normalise $path, $origin && $origin->{path};
		1632
		1633	if (my $map = $cf::MAP{$path}) {
		1634	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1635	}
		1636
		1637	undef $MAP_PREFETCH{$path};
		1638	$MAP_PREFETCHER ||= cf::async {
		1639	while (%MAP_PREFETCH) {
		1640	for my $path (keys %MAP_PREFETCH) {
		1641	my $map = find $path
		1642	or next;
		1643	$map->load;
		1644
		1645	delete $MAP_PREFETCH{$path};
		1646	}
		1647	}
		1648	undef $MAP_PREFETCHER;
612	};	1649	};
613	$msg->($@) if $@;	1650	$MAP_PREFETCHER->prio (6);
614		1651
615	$msg->("reloaded");	1652	()
616	};	1653	}
617		1654
618	sub perl_reload() {	1655	sub save {
619	_perl_reload {	1656	my ($self) = @_;
620	warn $_[0];	1657
621	print "$_[0]\n";	1658	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1659
		1660	$self->{last_save} = $cf::RUNTIME;
		1661
		1662	return unless $self->dirty;
		1663
		1664	my $save = $self->save_path; utf8::encode $save;
		1665	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1666
		1667	$self->{load_path} = $save;
		1668
		1669	return if $self->{deny_save};
		1670
		1671	local $self->{last_access} = $self->last_access;#d#
		1672
		1673	cf::async {
		1674	$_->contr->save for $self->players;
622	};	1675	};
623	}
624		1676
625	register_command "perl-reload", 0, sub {	1677	if ($uniq) {
626	my ($who, $arg) = @_;	1678	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
627		1679	$self->_save_objects ($uniq, cf::IO_UNIQUES);
628	if ($who->flag (FLAG_WIZ)) {
629	_perl_reload {
630	warn $_[0];
631	$who->message ($_[0]);
632	};
633	}
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {
642	my ($pl, $buf) = @_;
643
644	my $msg = eval { from_json $buf };
645
646	if (ref $msg) {
647	if (my $cb = $extcmd{$msg->{msgtype}}) {
648	if (my %reply = $cb->[0]->($pl, $msg)) {
649	$pl->ext_reply ($msg->{msgid}, %reply);
650	}
651	}
652	} else {	1680	} else {
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1681	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
654	}
655
656	cf::override;
657	},	1682	}
658	;	1683	}
659		1684
660	#############################################################################	1685	sub swap_out {
661	# load/save/clean perl data associated with a map
662
663	*cf::mapsupport::on_clean = sub {
664	my ($map) = @_;	1686	my ($self) = @_;
665		1687
666	my $path = $map->tmpname;	1688	# save first because save cedes
667	defined $path or return;	1689	$self->save;
668		1690
669	unlink "$path.cfperl";	1691	my $lock = cf::lock_acquire "map_data:" . $self->path;
670	unlink "$path.pst";
671	};
672		1692
673	*cf::mapsupport::on_swapin =	1693	return if $self->players;
674	*cf::mapsupport::on_load = sub {	1694	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1695	return if $self->{deny_save};
		1696
		1697	$self->clear;
		1698	$self->in_memory (cf::MAP_SWAPPED);
		1699	}
		1700
		1701	sub reset_at {
675	my ($map) = @_;	1702	my ($self) = @_;
676		1703
677	my $path = $map->tmpname;	1704	# TODO: safety, remove and allow resettable per-player maps
678	$path = $map->path unless defined $path;	1705	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1706	return 1e99 if $self->{deny_reset};
679		1707
680	open my $fh, "<:raw", "$path.cfperl"	1708	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
681	or return; # no perl data	1709	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
682		1710
683	my $data = Storable::thaw do { local $/; <$fh> };	1711	$time + $to
684
685	$data->{version} <= 1
686	or return; # too new
687
688	$map->_set_obs ($data->{obs});
689	};
690
691	attach_to_maps prio => -10000, package => cf::mapsupport::;
692
693	#############################################################################
694	# load/save perl data associated with player->ob objects
695
696	sub all_objects(@) {
697	@_, map all_objects ($_->inv), @_
698	}	1712	}
699		1713
700	attach_to_players	1714	sub should_reset {
701	on_load => sub {	1715	my ($self) = @_;
702	my ($pl, $path) = @_;
703		1716
704	for my $o (all_objects $pl->ob) {	1717	$self->reset_at <= $cf::RUNTIME
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1718	}
706	$o->set_ob_key_value ("_perl_data");
707		1719
708	%$o = %{ Storable::thaw pack "H*", $value };	1720	sub reset {
709	}	1721	my ($self) = @_;
710	}	1722
		1723	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1724
		1725	return if $self->players;
		1726	return if $self->isa ("ext::map_per_player");#d#
		1727
		1728	warn "resetting map ", $self->path;#d#
		1729
		1730	$self->in_memory (cf::MAP_SWAPPED);
		1731
		1732	# need to save uniques path
		1733	unless ($self->{deny_save}) {
		1734	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1735
		1736	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1737	if $uniq;
711	},	1738	}
712	;
713		1739
714	#############################################################################	1740	delete $cf::MAP{$self->path};
715	# core extensions - in perl
716		1741
717	=item cf::player::exists $login	1742	$self->clear;
718		1743
719	Returns true when the given account exists.	1744	$_->clear_links_to ($self) for values %cf::MAP;
720		1745
721	=cut	1746	$self->unlink_save;
722		1747	$self->destroy;
723	sub cf::player::exists($) {
724	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	1748	}
727		1749
		1750	my $nuke_counter = "aaaa";
		1751
		1752	sub nuke {
		1753	my ($self) = @_;
		1754
		1755	delete $cf::MAP{$self->path};
		1756
		1757	$self->unlink_save;
		1758
		1759	bless $self, "cf::map";
		1760	delete $self->{deny_reset};
		1761	$self->{deny_save} = 1;
		1762	$self->reset_timeout (1);
		1763	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1764
		1765	$cf::MAP{$self->path} = $self;
		1766
		1767	$self->reset; # polite request, might not happen
		1768	}
		1769
		1770	=item cf::map::unique_maps
		1771
		1772	Returns an arrayref of paths of all shared maps that have
		1773	instantiated unique items. May block.
		1774
		1775	=cut
		1776
		1777	sub unique_maps() {
		1778	my $files = aio_readdir $UNIQUEDIR
		1779	or return;
		1780
		1781	my @paths;
		1782
		1783	for (@$files) {
		1784	utf8::decode $_;
		1785	next if /\.pst$/;
		1786	next unless /^$PATH_SEP/o;
		1787
		1788	push @paths, cf::map::normalise $_;
		1789	}
		1790
		1791	\@paths
		1792	}
		1793
		1794	package cf;
		1795
		1796	=back
		1797
		1798	=head3 cf::object
		1799
		1800	=cut
		1801
		1802	package cf::object;
		1803
		1804	=over 4
		1805
		1806	=item $ob->inv_recursive
		1807
		1808	Returns the inventory of the object _and_ their inventories, recursively.
		1809
		1810	=cut
		1811
		1812	sub inv_recursive_;
		1813	sub inv_recursive_ {
		1814	map { $_, inv_recursive_ $_->inv } @_
		1815	}
		1816
		1817	sub inv_recursive {
		1818	inv_recursive_ inv $_[0]
		1819	}
		1820
		1821	package cf;
		1822
		1823	=back
		1824
		1825	=head3 cf::object::player
		1826
		1827	=over 4
		1828
728	=item $player->reply ($npc, $msg[, $flags])	1829	=item $player_object->reply ($npc, $msg[, $flags])
729		1830
730	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1831	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
731	can be C<undef>. Does the right thing when the player is currently in a	1832	can be C<undef>. Does the right thing when the player is currently in a
732	dialogue with the given NPC character.	1833	dialogue with the given NPC character.
733		1834
734	=cut	1835	=cut
735		1836
736	# rough implementation of a future "reply" method that works	1837	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	1838	# with dialog boxes.
		1839	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	1840	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	1841	my ($self, $npc, $msg, $flags) = @_;
740		1842
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1843	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		1844
…		…
746	$msg = $npc->name . " says: $msg" if $npc;	1848	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	1849	$self->message ($msg, $flags);
748	}	1850	}
749	}	1851	}
750		1852
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	1853	=item $player_object->may ("access")
752		1854
753	Sends an ext reply to the player.	1855	Returns wether the given player is authorized to access resource "access"
		1856	(e.g. "command_wizcast").
754		1857
755	=cut	1858	=cut
756		1859
757	sub cf::player::ext_reply($$$%) {	1860	sub cf::object::player::may {
		1861	my ($self, $access) = @_;
		1862
		1863	$self->flag (cf::FLAG_WIZ) ||
		1864	(ref $cf::CFG{"may_$access"}
		1865	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1866	: $cf::CFG{"may_$access"})
		1867	}
		1868
		1869	=item $player_object->enter_link
		1870
		1871	Freezes the player and moves him/her to a special map (C<{link}>).
		1872
		1873	The player should be reasonably safe there for short amounts of time. You
		1874	I<MUST> call C<leave_link> as soon as possible, though.
		1875
		1876	Will never block.
		1877
		1878	=item $player_object->leave_link ($map, $x, $y)
		1879
		1880	Moves the player out of the special C<{link}> map onto the specified
		1881	map. If the map is not valid (or omitted), the player will be moved back
		1882	to the location he/she was before the call to C<enter_link>, or, if that
		1883	fails, to the emergency map position.
		1884
		1885	Might block.
		1886
		1887	=cut
		1888
		1889	sub link_map {
		1890	unless ($LINK_MAP) {
		1891	$LINK_MAP = cf::map::find "{link}"
		1892	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1893	$LINK_MAP->load;
		1894	}
		1895
		1896	$LINK_MAP
		1897	}
		1898
		1899	sub cf::object::player::enter_link {
		1900	my ($self) = @_;
		1901
		1902	$self->deactivate_recursive;
		1903
		1904	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1905
		1906	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1907	if $self->map && $self->map->{path} ne "{link}";
		1908
		1909	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1910	}
		1911
		1912	sub cf::object::player::leave_link {
		1913	my ($self, $map, $x, $y) = @_;
		1914
		1915	return unless $self->contr->active;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1949
		1950	Moves the player to the given map-path and coordinates by first freezing
		1951	her, loading and preparing them map, calling the provided $check callback
		1952	that has to return the map if sucecssful, and then unfreezes the player on
		1953	the new (success) or old (failed) map position.
		1954
		1955	=cut
		1956
		1957	our $GOTOGEN;
		1958
		1959	sub cf::object::player::goto {
		1960	my ($self, $path, $x, $y, $check) = @_;
		1961
		1962	# do generation counting so two concurrent goto's will be executed in-order
		1963	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	my $map = eval {
		1969	my $map = cf::map::find $path;
		1970
		1971	if ($map) {
		1972	$map = $map->customise_for ($self);
		1973	$map = $check->($map) if $check && $map;
		1974	} else {
		1975	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1976	}
		1977
		1978	$map
		1979	};
		1980
		1981	if ($@) {
		1982	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1983	LOG llevError | logBacktrace, Carp::longmess $@;
		1984	}
		1985
		1986	if ($gen == $self->{_goto_generation}) {
		1987	delete $self->{_goto_generation};
		1988	$self->leave_link ($map, $x, $y);
		1989	}
		1990	})->prio (1);
		1991	}
		1992
		1993	=item $player_object->enter_exit ($exit_object)
		1994
		1995	=cut
		1996
		1997	sub parse_random_map_params {
		1998	my ($spec) = @_;
		1999
		2000	my $rmp = { # defaults
		2001	xsize => (cf::rndm 15, 40),
		2002	ysize => (cf::rndm 15, 40),
		2003	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2004	#layout => string,
		2005	};
		2006
		2007	for (split /\n/, $spec) {
		2008	my ($k, $v) = split /\s+/, $_, 2;
		2009
		2010	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2011	}
		2012
		2013	$rmp
		2014	}
		2015
		2016	sub prepare_random_map {
		2017	my ($exit) = @_;
		2018
		2019	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2020
		2021	# all this does is basically replace the /! path by
		2022	# a new random map path (?random/...) with a seed
		2023	# that depends on the exit object
		2024
		2025	my $rmp = parse_random_map_params $exit->msg;
		2026
		2027	if ($exit->map) {
		2028	$rmp->{region} = $exit->region->name;
		2029	$rmp->{origin_map} = $exit->map->path;
		2030	$rmp->{origin_x} = $exit->x;
		2031	$rmp->{origin_y} = $exit->y;
		2032	}
		2033
		2034	$rmp->{random_seed} ||= $exit->random_seed;
		2035
		2036	my $data = cf::to_json $rmp;
		2037	my $md5 = Digest::MD5::md5_hex $data;
		2038	my $meta = "$RANDOMDIR/$md5.meta";
		2039
		2040	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2041	aio_write $fh, 0, (length $data), $data, 0;
		2042	undef $fh;
		2043	aio_rename "$meta~", $meta;
		2044
		2045	$exit->slaying ("?random/$md5");
		2046	$exit->msg (undef);
		2047	}
		2048	}
		2049
		2050	sub cf::object::player::enter_exit {
		2051	my ($self, $exit) = @_;
		2052
		2053	return unless $self->type == cf::PLAYER;
		2054
		2055	if ($exit->slaying eq "/!") {
		2056	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2057	# the problem is that $exit might not survive long enough
		2058	# so it needs to be done right now, right here
		2059	cf::sync_job { prepare_random_map $exit };
		2060	}
		2061
		2062	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2063	my $hp = $exit->stats->hp;
		2064	my $sp = $exit->stats->sp;
		2065
		2066	$self->enter_link;
		2067
		2068	(async {
		2069	$self->deactivate_recursive; # just to be sure
		2070	unless (eval {
		2071	$self->goto ($slaying, $hp, $sp);
		2072
		2073	1;
		2074	}) {
		2075	$self->message ("Something went wrong deep within the crossfire server. "
		2076	. "I'll try to bring you back to the map you were before. "
		2077	. "Please report this to the dungeon master!",
		2078	cf::NDI_UNIQUE | cf::NDI_RED);
		2079
		2080	warn "ERROR in enter_exit: $@";
		2081	$self->leave_link;
		2082	}
		2083	})->prio (1);
		2084	}
		2085
		2086	=head3 cf::client
		2087
		2088	=over 4
		2089
		2090	=item $client->send_drawinfo ($text, $flags)
		2091
		2092	Sends a drawinfo packet to the client. Circumvents output buffering so
		2093	should not be used under normal circumstances.
		2094
		2095	=cut
		2096
		2097	sub cf::client::send_drawinfo {
		2098	my ($self, $text, $flags) = @_;
		2099
		2100	utf8::encode $text;
		2101	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2102	}
		2103
		2104	=item $client->ext_event ($type, %msg)
		2105
		2106	Sends an exti event to the client.
		2107
		2108	=cut
		2109
		2110	sub cf::client::ext_event($$%) {
758	my ($self, $id, %msg) = @_;	2111	my ($self, $type, %msg) = @_;
759		2112
760	$msg{msgid} = $id;	2113	$msg{msgtype} = "event_$type";
761
762	$self->send ("ext " . to_json \%msg);	2114	$self->send_packet ("ext " . cf::to_json \%msg);
763	}	2115	}
764		2116
765	#############################################################################	2117	=item $success = $client->query ($flags, "text", \&cb)
766	# map scripting support	2118
		2119	Queues a query to the client, calling the given callback with
		2120	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2121	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2122
		2123	Queries can fail, so check the return code. Or don't, as queries will become
		2124	reliable at some point in the future.
		2125
		2126	=cut
		2127
		2128	sub cf::client::query {
		2129	my ($self, $flags, $text, $cb) = @_;
		2130
		2131	return unless $self->state == ST_PLAYING
		2132	|| $self->state == ST_SETUP
		2133	|| $self->state == ST_CUSTOM;
		2134
		2135	$self->state (ST_CUSTOM);
		2136
		2137	utf8::encode $text;
		2138	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2139
		2140	$self->send_packet ($self->{query_queue}[0][0])
		2141	if @{ $self->{query_queue} } == 1;
		2142	}
		2143
		2144	cf::client->attach (
		2145	on_reply => sub {
		2146	my ($ns, $msg) = @_;
		2147
		2148	# this weird shuffling is so that direct followup queries
		2149	# get handled first
		2150	my $queue = delete $ns->{query_queue}
		2151	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2152
		2153	(shift @$queue)->[1]->($msg);
		2154	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2155
		2156	push @{ $ns->{query_queue} }, @$queue;
		2157
		2158	if (@{ $ns->{query_queue} } == @$queue) {
		2159	if (@$queue) {
		2160	$ns->send_packet ($ns->{query_queue}[0][0]);
		2161	} else {
		2162	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2163	}
		2164	}
		2165	},
		2166	);
		2167
		2168	=item $client->async (\&cb)
		2169
		2170	Create a new coroutine, running the specified callback. The coroutine will
		2171	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2172	or loss of connection).
		2173
		2174	=cut
		2175
		2176	sub cf::client::async {
		2177	my ($self, $cb) = @_;
		2178
		2179	my $coro = &Coro::async ($cb);
		2180
		2181	$coro->on_destroy (sub {
		2182	delete $self->{_coro}{$coro+0};
		2183	});
		2184
		2185	$self->{_coro}{$coro+0} = $coro;
		2186
		2187	$coro
		2188	}
		2189
		2190	cf::client->attach (
		2191	on_destroy => sub {
		2192	my ($ns) = @_;
		2193
		2194	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2195	},
		2196	);
		2197
		2198	=back
		2199
		2200
		2201	=head2 SAFE SCRIPTING
		2202
		2203	Functions that provide a safe environment to compile and execute
		2204	snippets of perl code without them endangering the safety of the server
		2205	itself. Looping constructs, I/O operators and other built-in functionality
		2206	is not available in the safe scripting environment, and the number of
		2207	functions and methods that can be called is greatly reduced.
		2208
		2209	=cut
767		2210
768	our $safe = new Safe "safe";	2211	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	2212	our $safe_hole = new Safe::Hole;
770		2213
771	$SIG{FPE} = 'IGNORE';	2214	$SIG{FPE} = 'IGNORE';
772		2215
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2216	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
774		2217
775	# here we export the classes and methods available to script code	2218	# here we export the classes and methods available to script code
776		2219
		2220	=pod
		2221
		2222	The following functions and methods are available within a safe environment:
		2223
		2224	cf::object contr pay_amount pay_player map
		2225	cf::object::player player
		2226	cf::player peaceful
		2227	cf::map trigger
		2228
		2229	=cut
		2230
777	for (	2231	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	2232	["cf::object" => qw(contr pay_amount pay_player map)],
779	["cf::object::player" => qw(player)],	2233	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	2234	["cf::player" => qw(peaceful)],
		2235	["cf::map" => qw(trigger)],
781	) {	2236	) {
782	no strict 'refs';	2237	no strict 'refs';
783	my ($pkg, @funs) = @$_;	2238	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2239	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	2240	for @funs;
786	}	2241	}
		2242
		2243	=over 4
		2244
		2245	=item @retval = safe_eval $code, [var => value, ...]
		2246
		2247	Compiled and executes the given perl code snippet. additional var/value
		2248	pairs result in temporary local (my) scalar variables of the given name
		2249	that are available in the code snippet. Example:
		2250
		2251	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2252
		2253	=cut
787		2254
788	sub safe_eval($;@) {	2255	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	2256	my ($code, %vars) = @_;
790		2257
791	my $qcode = $code;	2258	my $qcode = $code;
…		…
814	}	2281	}
815		2282
816	wantarray ? @res : $res[0]	2283	wantarray ? @res : $res[0]
817	}	2284	}
818		2285
		2286	=item cf::register_script_function $function => $cb
		2287
		2288	Register a function that can be called from within map/npc scripts. The
		2289	function should be reasonably secure and should be put into a package name
		2290	like the extension.
		2291
		2292	Example: register a function that gets called whenever a map script calls
		2293	C<rent::overview>, as used by the C<rent> extension.
		2294
		2295	cf::register_script_function "rent::overview" => sub {
		2296	...
		2297	};
		2298
		2299	=cut
		2300
819	sub register_script_function {	2301	sub register_script_function {
820	my ($fun, $cb) = @_;	2302	my ($fun, $cb) = @_;
821		2303
822	no strict 'refs';	2304	no strict 'refs';
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2305	*{"safe::$fun"} = $safe_hole->wrap ($cb);
824	}	2306	}
825		2307
		2308	=back
		2309
		2310	=cut
		2311
826	#############################################################################	2312	#############################################################################
827	# the server's main()	2313
		2314	=head2 EXTENSION DATABASE SUPPORT
		2315
		2316	Crossfire maintains a very simple database for extension use. It can
		2317	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2318	convert to/from binary).
		2319
		2320	The parameter C<$family> should best start with the name of the extension
		2321	using it, it should be unique.
		2322
		2323	=over 4
		2324
		2325	=item $value = cf::db_get $family => $key
		2326
		2327	Returns a single value from the database.
		2328
		2329	=item cf::db_put $family => $key => $value
		2330
		2331	Stores the given C<$value> in the family.
		2332
		2333	=cut
		2334
		2335	our $DB;
		2336
		2337	sub db_init {
		2338	unless ($DB) {
		2339	$DB = BDB::db_create $DB_ENV;
		2340
		2341	cf::sync_job {
		2342	eval {
		2343	$DB->set_flags (BDB::CHKSUM);
		2344
		2345	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2346	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2347	cf::cleanup "db_open(db): $!" if $!;
		2348	};
		2349	cf::cleanup "db_open(db): $@" if $@;
		2350	};
		2351	}
		2352	}
		2353
		2354	sub db_get($$) {
		2355	my $key = "$_[0]/$_[1]";
		2356
		2357	cf::sync_job {
		2358	BDB::db_get $DB, undef, $key, my $data;
		2359
		2360	$! ? ()
		2361	: $data
		2362	}
		2363	}
		2364
		2365	sub db_put($$$) {
		2366	BDB::dbreq_pri 4;
		2367	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2368	}
		2369
		2370	=item cf::cache $id => [$paths...], $processversion => $process
		2371
		2372	Generic caching function that returns the value of the resource $id,
		2373	caching and regenerating as required.
		2374
		2375	This function can block.
		2376
		2377	=cut
		2378
		2379	sub cache {
		2380	my ($id, $src, $processversion, $process) = @_;
		2381
		2382	my $meta =
		2383	join "\x00",
		2384	$processversion,
		2385	map {
		2386	aio_stat $_
		2387	and Carp::croak "$_: $!";
		2388
		2389	($_, (stat _)[7,9])
		2390	} @$src;
		2391
		2392	my $dbmeta = db_get cache => "$id/meta";
		2393	if ($dbmeta ne $meta) {
		2394	# changed, we may need to process
		2395
		2396	my @data;
		2397	my $md5;
		2398
		2399	for (0 .. $#$src) {
		2400	0 <= aio_load $src->[$_], $data[$_]
		2401	or Carp::croak "$src->[$_]: $!";
		2402	}
		2403
		2404	# if processing is expensive, check
		2405	# checksum first
		2406	if (1) {
		2407	$md5 =
		2408	join "\x00",
		2409	$processversion,
		2410	map {
		2411	Coro::cede;
		2412	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2413	} 0.. $#$src;
		2414
		2415
		2416	my $dbmd5 = db_get cache => "$id/md5";
		2417	if ($dbmd5 eq $md5) {
		2418	db_put cache => "$id/meta", $meta;
		2419
		2420	return db_get cache => "$id/data";
		2421	}
		2422	}
		2423
		2424	my $t1 = Time::HiRes::time;
		2425	my $data = $process->(\@data);
		2426	my $t2 = Time::HiRes::time;
		2427
		2428	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2429
		2430	db_put cache => "$id/data", $data;
		2431	db_put cache => "$id/md5" , $md5;
		2432	db_put cache => "$id/meta", $meta;
		2433
		2434	return $data;
		2435	}
		2436
		2437	db_get cache => "$id/data"
		2438	}
		2439
		2440	=item fork_call { }, $args
		2441
		2442	Executes the given code block with the given arguments in a seperate
		2443	process, returning the results. Everything must be serialisable with
		2444	Coro::Storable. May, of course, block. Note that the executed sub may
		2445	never block itself or use any form of Event handling.
		2446
		2447	=cut
		2448
		2449	sub fork_call(&@) {
		2450	my ($cb, @args) = @_;
		2451
		2452	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2453	# or die "socketpair: $!";
		2454	pipe my $fh1, my $fh2
		2455	or die "pipe: $!";
		2456
		2457	if (my $pid = fork) {
		2458	close $fh2;
		2459
		2460	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2461	$res = Coro::Storable::thaw $res;
		2462
		2463	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2464
		2465	die $$res unless "ARRAY" eq ref $res;
		2466
		2467	return wantarray ? @$res : $res->[-1];
		2468	} else {
		2469	reset_signals;
		2470	local $SIG{__WARN__};
		2471	local $SIG{__DIE__};
		2472	eval {
		2473	close $fh1;
		2474
		2475	my @res = eval { $cb->(@args) };
		2476	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2477	};
		2478
		2479	warn $@ if $@;
		2480	_exit 0;
		2481	}
		2482	}
		2483
		2484	#############################################################################
		2485	# the server's init and main functions
		2486
		2487	sub load_facedata($) {
		2488	my ($path) = @_;
		2489
		2490	warn "loading facedata from $path\n";
		2491
		2492	my $facedata;
		2493	0 < aio_load $path, $facedata
		2494	or die "$path: $!";
		2495
		2496	$facedata = Coro::Storable::thaw $facedata;
		2497
		2498	$facedata->{version} == 2
		2499	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2500
		2501	{
		2502	my $faces = $facedata->{faceinfo};
		2503
		2504	while (my ($face, $info) = each %$faces) {
		2505	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2506	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2507	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2508	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2509	Coro::cede;
		2510	}
		2511
		2512	while (my ($face, $info) = each %$faces) {
		2513	next unless $info->{smooth};
		2514	my $idx = cf::face::find $face
		2515	or next;
		2516	if (my $smooth = cf::face::find $info->{smooth}) {
		2517	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2518	} else {
		2519	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2520	}
		2521	Coro::cede;
		2522	}
		2523	}
		2524
		2525	{
		2526	my $anims = $facedata->{animinfo};
		2527
		2528	while (my ($anim, $info) = each %$anims) {
		2529	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2530	Coro::cede;
		2531	}
		2532
		2533	cf::anim::invalidate_all; # d'oh
		2534	}
		2535
		2536	1
		2537	}
		2538
		2539	sub reload_regions {
		2540	load_resource_file "$MAPDIR/regions"
		2541	or die "unable to load regions file\n";
		2542	}
		2543
		2544	sub reload_facedata {
		2545	load_facedata "$DATADIR/facedata"
		2546	or die "unable to load facedata\n";
		2547	}
		2548
		2549	sub reload_archetypes {
		2550	load_resource_file "$DATADIR/archetypes"
		2551	or die "unable to load archetypes\n";
		2552	}
		2553
		2554	sub reload_treasures {
		2555	load_resource_file "$DATADIR/treasures"
		2556	or die "unable to load treasurelists\n";
		2557	}
		2558
		2559	sub reload_resources {
		2560	warn "reloading resource files...\n";
		2561
		2562	reload_regions;
		2563	reload_facedata;
		2564	reload_archetypes;
		2565	reload_treasures;
		2566
		2567	warn "finished reloading resource files\n";
		2568	}
		2569
		2570	sub init {
		2571	reload_resources;
		2572	}
		2573
		2574	sub cfg_load {
		2575	open my $fh, "<:utf8", "$CONFDIR/config"
		2576	or return;
		2577
		2578	local $/;
		2579	*CFG = YAML::Syck::Load <$fh>;
		2580
		2581	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2582
		2583	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2584	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2585
		2586	if (exists $CFG{mlockall}) {
		2587	eval {
		2588	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2589	and die "WARNING: m(un)lockall failed: $!\n";
		2590	};
		2591	warn $@ if $@;
		2592	}
		2593	}
828		2594
829	sub main {	2595	sub main {
		2596	# we must not ever block the main coroutine
		2597	local $Coro::idle = sub {
		2598	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2599	(async {
		2600	Event::one_event;
		2601	})->prio (Coro::PRIO_MAX);
		2602	};
		2603
		2604	cfg_load;
		2605	db_init;
		2606	load_extensions;
		2607
		2608	$TICK_WATCHER->start;
830	Event::loop;	2609	Event::loop;
831	}	2610	}
832		2611
833	#############################################################################	2612	#############################################################################
834	# initialisation	2613	# initialisation and cleanup
835		2614
836	register "<global>", __PACKAGE__;	2615	# install some emergency cleanup handlers
		2616	BEGIN {
		2617	for my $signal (qw(INT HUP TERM)) {
		2618	Event->signal (
		2619	reentrant => 0,
		2620	data => WF_AUTOCANCEL,
		2621	signal => $signal,
		2622	prio => 0,
		2623	cb => sub {
		2624	cf::cleanup "SIG$signal";
		2625	},
		2626	);
		2627	}
		2628	}
		2629
		2630	sub emergency_save() {
		2631	my $freeze_guard = cf::freeze_mainloop;
		2632
		2633	warn "enter emergency perl save\n";
		2634
		2635	cf::sync_job {
		2636	# use a peculiar iteration method to avoid tripping on perl
		2637	# refcount bugs in for. also avoids problems with players
		2638	# and maps saved/destroyed asynchronously.
		2639	warn "begin emergency player save\n";
		2640	for my $login (keys %cf::PLAYER) {
		2641	my $pl = $cf::PLAYER{$login} or next;
		2642	$pl->valid or next;
		2643	$pl->save;
		2644	}
		2645	warn "end emergency player save\n";
		2646
		2647	warn "begin emergency map save\n";
		2648	for my $path (keys %cf::MAP) {
		2649	my $map = $cf::MAP{$path} or next;
		2650	$map->valid or next;
		2651	$map->save;
		2652	}
		2653	warn "end emergency map save\n";
		2654
		2655	warn "begin emergency database checkpoint\n";
		2656	BDB::db_env_txn_checkpoint $DB_ENV;
		2657	warn "end emergency database checkpoint\n";
		2658	};
		2659
		2660	warn "leave emergency perl save\n";
		2661	}
		2662
		2663	sub post_cleanup {
		2664	my ($make_core) = @_;
		2665
		2666	warn Carp::longmess "post_cleanup backtrace"
		2667	if $make_core;
		2668	}
		2669
		2670	sub do_reload_perl() {
		2671	# can/must only be called in main
		2672	if ($Coro::current != $Coro::main) {
		2673	warn "can only reload from main coroutine";
		2674	return;
		2675	}
		2676
		2677	warn "reloading...";
		2678
		2679	warn "entering sync_job";
		2680
		2681	cf::sync_job {
		2682	cf::write_runtime; # external watchdog should not bark
		2683	cf::emergency_save;
		2684	cf::write_runtime; # external watchdog should not bark
		2685
		2686	warn "syncing database to disk";
		2687	BDB::db_env_txn_checkpoint $DB_ENV;
		2688
		2689	# if anything goes wrong in here, we should simply crash as we already saved
		2690
		2691	warn "cancelling all WF_AUTOCANCEL watchers";
		2692	for (Event::all_watchers) {
		2693	$_->cancel if $_->data & WF_AUTOCANCEL;
		2694	}
		2695
		2696	warn "flushing outstanding aio requests";
		2697	for (;;) {
		2698	BDB::flush;
		2699	IO::AIO::flush;
		2700	Coro::cede;
		2701	last unless IO::AIO::nreqs || BDB::nreqs;
		2702	warn "iterate...";
		2703	}
		2704
		2705	++$RELOAD;
		2706
		2707	warn "cancelling all extension coros";
		2708	$_->cancel for values %EXT_CORO;
		2709	%EXT_CORO = ();
		2710
		2711	warn "removing commands";
		2712	%COMMAND = ();
		2713
		2714	warn "removing ext commands";
		2715	%EXTCMD = ();
		2716
		2717	warn "unloading/nuking all extensions";
		2718	for my $pkg (@EXTS) {
		2719	warn "... unloading $pkg";
		2720
		2721	if (my $cb = $pkg->can ("unload")) {
		2722	eval {
		2723	$cb->($pkg);
		2724	1
		2725	} or warn "$pkg unloaded, but with errors: $@";
		2726	}
		2727
		2728	warn "... nuking $pkg";
		2729	Symbol::delete_package $pkg;
		2730	}
		2731
		2732	warn "unloading all perl modules loaded from $LIBDIR";
		2733	while (my ($k, $v) = each %INC) {
		2734	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2735
		2736	warn "... unloading $k";
		2737	delete $INC{$k};
		2738
		2739	$k =~ s/\.pm$//;
		2740	$k =~ s/\//::/g;
		2741
		2742	if (my $cb = $k->can ("unload_module")) {
		2743	$cb->();
		2744	}
		2745
		2746	Symbol::delete_package $k;
		2747	}
		2748
		2749	warn "getting rid of safe::, as good as possible";
		2750	Symbol::delete_package "safe::$_"
		2751	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2752
		2753	warn "unloading cf.pm \"a bit\"";
		2754	delete $INC{"cf.pm"};
		2755	delete $INC{"cf/pod.pm"};
		2756
		2757	# don't, removes xs symbols, too,
		2758	# and global variables created in xs
		2759	#Symbol::delete_package __PACKAGE__;
		2760
		2761	warn "unload completed, starting to reload now";
		2762
		2763	warn "reloading cf.pm";
		2764	require cf;
		2765	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2766
		2767	warn "loading config and database again";
		2768	cf::cfg_load;
		2769
		2770	warn "loading extensions";
		2771	cf::load_extensions;
		2772
		2773	warn "reattaching attachments to objects/players";
		2774	_global_reattach; # objects, sockets
		2775	warn "reattaching attachments to maps";
		2776	reattach $_ for values %MAP;
		2777	warn "reattaching attachments to players";
		2778	reattach $_ for values %PLAYER;
		2779
		2780	warn "leaving sync_job";
		2781
		2782	1
		2783	} or do {
		2784	warn $@;
		2785	warn "error while reloading, exiting.";
		2786	exit 1;
		2787	};
		2788
		2789	warn "reloaded";
		2790	};
		2791
		2792	our $RELOAD_WATCHER; # used only during reload
		2793
		2794	sub reload_perl() {
		2795	# doing reload synchronously and two reloads happen back-to-back,
		2796	# coro crashes during coro_state_free->destroy here.
		2797
		2798	$RELOAD_WATCHER ||= Event->timer (
		2799	reentrant => 0,
		2800	after => 0,
		2801	data => WF_AUTOCANCEL,
		2802	cb => sub {
		2803	do_reload_perl;
		2804	undef $RELOAD_WATCHER;
		2805	},
		2806	);
		2807	}
		2808
		2809	register_command "reload" => sub {
		2810	my ($who, $arg) = @_;
		2811
		2812	if ($who->flag (FLAG_WIZ)) {
		2813	$who->message ("reloading server.");
		2814	async { reload_perl };
		2815	}
		2816	};
837		2817
838	unshift @INC, $LIBDIR;	2818	unshift @INC, $LIBDIR;
839		2819
840	load_extensions;	2820	my $bug_warning = 0;
841		2821
		2822	our @WAIT_FOR_TICK;
		2823	our @WAIT_FOR_TICK_BEGIN;
		2824
		2825	sub wait_for_tick {
		2826	return unless $TICK_WATCHER->is_active;
		2827	return if $Coro::current == $Coro::main;
		2828
		2829	my $signal = new Coro::Signal;
		2830	push @WAIT_FOR_TICK, $signal;
		2831	$signal->wait;
		2832	}
		2833
		2834	sub wait_for_tick_begin {
		2835	return unless $TICK_WATCHER->is_active;
		2836	return if $Coro::current == $Coro::main;
		2837
		2838	my $signal = new Coro::Signal;
		2839	push @WAIT_FOR_TICK_BEGIN, $signal;
		2840	$signal->wait;
		2841	}
		2842
		2843	my $min = 1e6;#d#
		2844	my $avg = 10;
842	$TICK_WATCHER = Event->timer (	2845	$TICK_WATCHER = Event->timer (
		2846	reentrant => 0,
		2847	parked => 1,
843	prio => 1,	2848	prio => 0,
844	at => $NEXT_TICK || 1,	2849	at => $NEXT_TICK || $TICK,
		2850	data => WF_AUTOCANCEL,
845	cb => sub {	2851	cb => sub {
		2852	if ($Coro::current != $Coro::main) {
		2853	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2854	unless ++$bug_warning > 10;
		2855	return;
		2856	}
		2857
		2858	$NOW = $tick_start = Event::time;
		2859
846	cf::server_tick; # one server iteration	2860	cf::server_tick; # one server iteration
847		2861
		2862	0 && sync_job {#d#
		2863	for(1..10) {
848	my $NOW = Event::time;	2864	my $t = Event::time;
		2865	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2866	or die;
		2867
		2868	$map->width (50);
		2869	$map->height (50);
		2870	$map->alloc;
		2871	$map->_load_objects ("/tmp/x.map", 1);
		2872	my $t = Event::time - $t;
		2873
		2874	#next unless $t < 0.0013;#d#
		2875	if ($t < $min) {
		2876	$min = $t;
		2877	}
		2878	$avg = $avg * 0.99 + $t * 0.01;
		2879	}
		2880	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2881	exit 0;
		2882	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2883	};
		2884
		2885	$RUNTIME += $TICK;
849	$NEXT_TICK += $TICK;	2886	$NEXT_TICK += $TICK;
850		2887
		2888	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2889	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2890	Coro::async_pool {
		2891	write_runtime
		2892	or warn "ERROR: unable to write runtime file: $!";
		2893	};
		2894	}
		2895
		2896	# my $AFTER = Event::time;
		2897	# warn $AFTER - $NOW;#d#
		2898
		2899	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2900	$sig->send;
		2901	}
		2902	while (my $sig = shift @WAIT_FOR_TICK) {
		2903	$sig->send;
		2904	}
		2905
		2906	$NOW = Event::time;
		2907
851	# if we are delayed by four ticks, skip them all	2908	# if we are delayed by four ticks or more, skip them all
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2909	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
853		2910
854	$TICK_WATCHER->at ($NEXT_TICK);	2911	$TICK_WATCHER->at ($NEXT_TICK);
855	$TICK_WATCHER->start;	2912	$TICK_WATCHER->start;
		2913
		2914	$LOAD = ($NOW - $tick_start) / $TICK;
		2915	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2916
		2917	_post_tick;
		2918
		2919
856	},	2920	},
857	);	2921	);
858		2922
859	_reload_2;	2923	{
		2924	BDB::max_poll_time $TICK * 0.1;
		2925	$BDB_POLL_WATCHER = Event->io (
		2926	reentrant => 0,
		2927	fd => BDB::poll_fileno,
		2928	poll => 'r',
		2929	prio => 0,
		2930	data => WF_AUTOCANCEL,
		2931	cb => \&BDB::poll_cb,
		2932	);
		2933	BDB::min_parallel 8;
		2934
		2935	BDB::set_sync_prepare {
		2936	my $status;
		2937	my $current = $Coro::current;
		2938	(
		2939	sub {
		2940	$status = $!;
		2941	$current->ready; undef $current;
		2942	},
		2943	sub {
		2944	Coro::schedule while defined $current;
		2945	$! = $status;
		2946	},
		2947	)
		2948	};
		2949
		2950	unless ($DB_ENV) {
		2951	$DB_ENV = BDB::db_env_create;
		2952
		2953	cf::sync_job {
		2954	eval {
		2955	BDB::db_env_open
		2956	$DB_ENV,
		2957	$BDBDIR,
		2958	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2959	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2960	0666;
		2961
		2962	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2963
		2964	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2965	$DB_ENV->set_lk_detect;
		2966	};
		2967
		2968	cf::cleanup "db_env_open(db): $@" if $@;
		2969	};
		2970	}
		2971	}
		2972
		2973	{
		2974	IO::AIO::min_parallel 8;
		2975
		2976	undef $Coro::AIO::WATCHER;
		2977	IO::AIO::max_poll_time $TICK * 0.1;
		2978	$AIO_POLL_WATCHER = Event->io (
		2979	reentrant => 0,
		2980	data => WF_AUTOCANCEL,
		2981	fd => IO::AIO::poll_fileno,
		2982	poll => 'r',
		2983	prio => 6,
		2984	cb => \&IO::AIO::poll_cb,
		2985	);
		2986	}
		2987
		2988	my $_log_backtrace;
		2989
		2990	sub _log_backtrace {
		2991	my ($msg, @addr) = @_;
		2992
		2993	$msg =~ s/\n//;
		2994
		2995	# limit the # of concurrent backtraces
		2996	if ($_log_backtrace < 2) {
		2997	++$_log_backtrace;
		2998	async {
		2999	my @bt = fork_call {
		3000	@addr = map { sprintf "%x", $_ } @addr;
		3001	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3002	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3003	or die "addr2line: $!";
		3004
		3005	my @funcs;
		3006	my @res = <$fh>;
		3007	chomp for @res;
		3008	while (@res) {
		3009	my ($func, $line) = splice @res, 0, 2, ();
		3010	push @funcs, "[$func] $line";
		3011	}
		3012
		3013	@funcs
		3014	};
		3015
		3016	LOG llevInfo, "[ABT] $msg\n";
		3017	LOG llevInfo, "[ABT] $_\n" for @bt;
		3018	--$_log_backtrace;
		3019	};
		3020	} else {
		3021	LOG llevInfo, "[ABT] $msg\n";
		3022	LOG llevInfo, "[ABT] [suppressed]\n";
		3023	}
		3024	}
		3025
		3026	# load additional modules
		3027	use cf::pod;
		3028
		3029	END { cf::emergency_save }
860		3030
861	1	3031	1
862		3032

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