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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.101 by root, Mon Dec 25 14:43:23 2006 UTC vs.
Revision 1.296 by root, Wed Jul 4 07:09:06 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
18		24
19	use IO::AIO 2.3;	25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
20	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
21	use Time::HiRes;	32	use Time::HiRes;
		33	use Compress::LZF;
22		34
		35	# configure various modules to our taste
		36	#
		37	$Storable::canonical = 1; # reduce rsync transfers
		38	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		39	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		40
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	41	$Event::Eval = 1; # no idea why this is required, but it is
24		42
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	43	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	44	$YAML::Syck::ImplicitUnicode = 1;
27		45
28	$Coro::main->prio (Coro::PRIO_MIN);	46	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29		47
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	48	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		49
32	our %COMMAND = ();	50	our %COMMAND = ();
33	our %COMMAND_TIME = ();	51	our %COMMAND_TIME = ();
		52
		53	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	54	our %EXTCMD = ();
		55	our %EXTICMD = ();
		56	our %EXT_CORO = (); # coroutines bound to extensions
		57	our %EXT_MAP = (); # pluggable maps
35		58
		59	our $RELOAD; # number of reloads so far
36	our @EVENT;	60	our @EVENT;
37	our $LIBDIR = datadir . "/ext";
38		61
39	our $TICK = MAX_TIME * 1e-6;	62	our $CONFDIR = confdir;
		63	our $DATADIR = datadir;
		64	our $LIBDIR = "$DATADIR/ext";
		65	our $PODDIR = "$DATADIR/pod";
		66	our $MAPDIR = "$DATADIR/" . mapdir;
		67	our $LOCALDIR = localdir;
		68	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		69	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		70	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		71	our $RANDOMDIR = "$LOCALDIR/random";
		72	our $BDBDIR = "$LOCALDIR/db";
		73
		74	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
40	our $TICK_WATCHER;	75	our $TICK_WATCHER;
		76	our $AIO_POLL_WATCHER;
		77	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	78	our $NEXT_TICK;
		79	our $NOW;
		80	our $USE_FSYNC = 1; # use fsync to write maps - default off
		81
		82	our $BDB_POLL_WATCHER;
		83	our $DB_ENV;
42		84
43	our %CFG;	85	our %CFG;
44		86
45	our $UPTIME; $UPTIME ||= time;	87	our $UPTIME; $UPTIME ||= time;
		88	our $RUNTIME;
		89
		90	our %PLAYER; # all users
		91	our %MAP; # all maps
		92	our $LINK_MAP; # the special {link} map, which is always available
		93
		94	# used to convert map paths into valid unix filenames by replacing / by ∕
		95	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		96
		97	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		98	our $LOADAVG; # same thing, but with alpha-smoothing
		99	our $tick_start; # for load detecting purposes
		100
		101	binmode STDOUT;
		102	binmode STDERR;
		103
		104	# read virtual server time, if available
		105	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		106	open my $fh, "<", "$LOCALDIR/runtime"
		107	or die "unable to read runtime file: $!";
		108	$RUNTIME = <$fh> + 0.;
		109	}
		110
		111	mkdir $_
		112	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		113
		114	our $EMERGENCY_POSITION;
		115
		116	sub cf::map::normalise;
46		117
47	#############################################################################	118	#############################################################################
48		119
49	=head2 GLOBAL VARIABLES	120	=head2 GLOBAL VARIABLES
50		121
…		…
52		123
53	=item $cf::UPTIME	124	=item $cf::UPTIME
54		125
55	The timestamp of the server start (so not actually an uptime).	126	The timestamp of the server start (so not actually an uptime).
56		127
57	=item $cf::LIBDIR	128	=item $cf::RUNTIME
58		129
59	The perl library directory, where extensions and cf-specific modules can	130	The time this server has run, starts at 0 and is increased by $cf::TICK on
60	be found. It will be added to C<@INC> automatically.	131	every server tick.
		132
		133	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		134	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		135	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		136
		137	Various directories - "/etc", read-only install directory, perl-library
		138	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		139	unique-items directory, player file directory, random maps directory and
		140	database environment.
		141
		142	=item $cf::NOW
		143
		144	The time of the last (current) server tick.
61		145
62	=item $cf::TICK	146	=item $cf::TICK
63		147
64	The interval between server ticks, in seconds.	148	The interval between server ticks, in seconds.
		149
		150	=item $cf::LOADAVG
		151
		152	The current CPU load on the server (alpha-smoothed), as a value between 0
		153	(none) and 1 (overloaded), indicating how much time is spent on processing
		154	objects per tick. Healthy values are < 0.5.
		155
		156	=item $cf::LOAD
		157
		158	The raw value load value from the last tick.
65		159
66	=item %cf::CFG	160	=item %cf::CFG
67		161
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	162	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	163	from wherever your confdir points to.
		164
		165	=item cf::wait_for_tick, cf::wait_for_tick_begin
		166
		167	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		168	returns directly I<after> the tick processing (and consequently, can only wake one process
		169	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
70		170
71	=back	171	=back
72		172
73	=cut	173	=cut
74		174
75	BEGIN {	175	BEGIN {
76	*CORE::GLOBAL::warn = sub {	176	*CORE::GLOBAL::warn = sub {
77	my $msg = join "", @_;	177	my $msg = join "", @_;
		178
78	$msg .= "\n"	179	$msg .= "\n"
79	unless $msg =~ /\n$/;	180	unless $msg =~ /\n$/;
80		181
81	print STDERR "cfperl: $msg";	182	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		183
		184	utf8::encode $msg;
82	LOG llevError, "cfperl: $msg";	185	LOG llevError, $msg;
83	};	186	};
84	}	187	}
85		188
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	189	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	190	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
88	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	191	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
89	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	192	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
90	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	193	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		194	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
91	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	195	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
92		196
93	# we bless all objects into (empty) derived classes to force a method lookup	197	# we bless all objects into (empty) derived classes to force a method lookup
94	# within the Safe compartment.	198	# within the Safe compartment.
95	for my $pkg (qw(	199	for my $pkg (qw(
96	cf::global cf::attachable	200	cf::global cf::attachable
…		…
105		209
106	$Event::DIED = sub {	210	$Event::DIED = sub {
107	warn "error in event callback: @_";	211	warn "error in event callback: @_";
108	};	212	};
109		213
110	my %ext_pkg;	214	#############################################################################
111	my @exts;
112	my @hook;
113		215
114	=head2 UTILITY FUNCTIONS	216	=head2 UTILITY FUNCTIONS
115		217
116	=over 4	218	=over 4
117		219
118	=cut	220	=item dumpval $ref
119		221
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	222	=cut
		223
		224	sub dumpval {
		225	eval {
		226	local $SIG{__DIE__};
		227	my $d;
		228	if (1) {
		229	$d = new Data::Dumper([$_[0]], ["*var"]);
		230	$d->Terse(1);
		231	$d->Indent(2);
		232	$d->Quotekeys(0);
		233	$d->Useqq(1);
		234	#$d->Bless(...);
		235	$d->Seen($_[1]) if @_ > 1;
		236	$d = $d->Dump();
		237	}
		238	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		239	$d
		240	} || "[unable to dump $_[0]: '$@']";
		241	}
121		242
122	=item $ref = cf::from_json $json	243	=item $ref = cf::from_json $json
123		244
124	Converts a JSON string into the corresponding perl data structure.	245	Converts a JSON string into the corresponding perl data structure.
125		246
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	247	=item $json = cf::to_json $ref
134		248
135	Converts a perl data structure into its JSON representation.	249	Converts a perl data structure into its JSON representation.
136		250
137	=cut	251	=cut
138		252
139	sub to_json($) {	253	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	254
141	JSON::Syck::Dump $_[0]	255	sub to_json ($) { $json_coder->encode ($_[0]) }
		256	sub from_json ($) { $json_coder->decode ($_[0]) }
		257
		258	=item cf::lock_wait $string
		259
		260	Wait until the given lock is available. See cf::lock_acquire.
		261
		262	=item my $lock = cf::lock_acquire $string
		263
		264	Wait until the given lock is available and then acquires it and returns
		265	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		266	for example when the coroutine gets canceled), the lock is automatically
		267	returned.
		268
		269	Lock names should begin with a unique identifier (for example, cf::map::find
		270	uses map_find and cf::map::load uses map_load).
		271
		272	=item $locked = cf::lock_active $string
		273
		274	Return true if the lock is currently active, i.e. somebody has locked it.
		275
		276	=cut
		277
		278	our %LOCK;
		279
		280	sub lock_wait($) {
		281	my ($key) = @_;
		282
		283	# wait for lock, if any
		284	while ($LOCK{$key}) {
		285	push @{ $LOCK{$key} }, $Coro::current;
		286	Coro::schedule;
		287	}
		288	}
		289
		290	sub lock_acquire($) {
		291	my ($key) = @_;
		292
		293	# wait, to be sure we are not locked
		294	lock_wait $key;
		295
		296	$LOCK{$key} = [];
		297
		298	Coro::guard {
		299	# wake up all waiters, to be on the safe side
		300	$_->ready for @{ delete $LOCK{$key} };
		301	}
		302	}
		303
		304	sub lock_active($) {
		305	my ($key) = @_;
		306
		307	! ! $LOCK{$key}
		308	}
		309
		310	sub freeze_mainloop {
		311	return unless $TICK_WATCHER->is_active;
		312
		313	my $guard = Coro::guard {
		314	$TICK_WATCHER->start;
		315	};
		316	$TICK_WATCHER->stop;
		317	$guard
		318	}
		319
		320	=item cf::async { BLOCK }
		321
		322	Currently the same as Coro::async_pool, meaning you cannot use
		323	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		324	thing you are allowed to do is call C<prio> on it.
		325
		326	=cut
		327
		328	BEGIN { *async = \&Coro::async_pool }
		329
		330	=item cf::sync_job { BLOCK }
		331
		332	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		333	is always able to handle events or runnable, as Crossfire TRT is only
		334	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		335	acceptable.
		336
		337	If it must be done, put the blocking parts into C<sync_job>. This will run
		338	the given BLOCK in another coroutine while waiting for the result. The
		339	server will be frozen during this time, so the block should either finish
		340	fast or be very important.
		341
		342	=cut
		343
		344	sub sync_job(&) {
		345	my ($job) = @_;
		346
		347	if ($Coro::current == $Coro::main) {
		348	my $time = Event::time;
		349
		350	# this is the main coro, too bad, we have to block
		351	# till the operation succeeds, freezing the server :/
		352
		353	# TODO: use suspend/resume instead
		354	# (but this is cancel-safe)
		355	my $freeze_guard = freeze_mainloop;
		356
		357	my $busy = 1;
		358	my @res;
		359
		360	(async {
		361	@res = eval { $job->() };
		362	warn $@ if $@;
		363	undef $busy;
		364	})->prio (Coro::PRIO_MAX);
		365
		366	while ($busy) {
		367	Coro::cede or Event::one_event;
		368	}
		369
		370	$time = Event::time - $time;
		371
		372	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		373	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		374
		375	$tick_start += $time; # do not account sync jobs to server load
		376
		377	wantarray ? @res : $res[0]
		378	} else {
		379	# we are in another coroutine, how wonderful, everything just works
		380
		381	$job->()
		382	}
		383	}
		384
		385	=item $coro = cf::async_ext { BLOCK }
		386
		387	Like async, but this coro is automatically being canceled when the
		388	extension calling this is being unloaded.
		389
		390	=cut
		391
		392	sub async_ext(&) {
		393	my $cb = shift;
		394
		395	my $coro = &Coro::async ($cb);
		396
		397	$coro->on_destroy (sub {
		398	delete $EXT_CORO{$coro+0};
		399	});
		400	$EXT_CORO{$coro+0} = $coro;
		401
		402	$coro
		403	}
		404
		405	=item fork_call { }, $args
		406
		407	Executes the given code block with the given arguments in a seperate
		408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
		411
		412	=cut
		413
		414	sub fork_call(&@) {
		415	my ($cb, @args) = @_;
		416
		417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
		421
		422	if (my $pid = fork) {
		423	close $fh2;
		424
		425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		426	$res = Coro::Storable::thaw $res;
		427
		428	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		429
		430	die $$res unless "ARRAY" eq ref $res;
		431
		432	return wantarray ? @$res : $res->[-1];
		433	} else {
		434	reset_signals;
		435	local $SIG{__WARN__};
		436	local $SIG{__DIE__};
		437	eval {
		438	close $fh1;
		439
		440	my @res = eval { $cb->(@args) };
		441	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		442	};
		443
		444	warn $@ if $@;
		445	_exit 0;
		446	}
		447	}
		448
		449	=item $value = cf::db_get $family => $key
		450
		451	Returns a single value from the environment database.
		452
		453	=item cf::db_put $family => $key => $value
		454
		455	Stores the given C<$value> in the family. It can currently store binary
		456	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		457
		458	=cut
		459
		460	our $DB;
		461
		462	sub db_init {
		463	unless ($DB) {
		464	$DB = BDB::db_create $DB_ENV;
		465
		466	cf::sync_job {
		467	eval {
		468	$DB->set_flags (BDB::CHKSUM);
		469
		470	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		471	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		472	cf::cleanup "db_open(db): $!" if $!;
		473	};
		474	cf::cleanup "db_open(db): $@" if $@;
		475	};
		476	}
		477	}
		478
		479	sub db_get($$) {
		480	my $key = "$_[0]/$_[1]";
		481
		482	cf::sync_job {
		483	BDB::db_get $DB, undef, $key, my $data;
		484
		485	$! ? ()
		486	: $data
		487	}
		488	}
		489
		490	sub db_put($$$) {
		491	BDB::dbreq_pri 4;
		492	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		493	}
		494
		495	=item cf::cache $id => [$paths...], $processversion => $process
		496
		497	Generic caching function that returns the value of the resource $id,
		498	caching and regenerating as required.
		499
		500	This function can block.
		501
		502	=cut
		503
		504	sub cache {
		505	my ($id, $src, $processversion, $process) = @_;
		506
		507	my $meta =
		508	join "\x00",
		509	$processversion,
		510	map {
		511	aio_stat $_
		512	and Carp::croak "$_: $!";
		513
		514	($_, (stat _)[7,9])
		515	} @$src;
		516
		517	my $dbmeta = db_get cache => "$id/meta";
		518	if ($dbmeta ne $meta) {
		519	# changed, we may need to process
		520
		521	my @data;
		522	my $md5;
		523
		524	for (0 .. $#$src) {
		525	0 <= aio_load $src->[$_], $data[$_]
		526	or Carp::croak "$src->[$_]: $!";
		527	}
		528
		529	# if processing is expensive, check
		530	# checksum first
		531	if (1) {
		532	$md5 =
		533	join "\x00",
		534	$processversion,
		535	map {
		536	Coro::cede;
		537	($src->[$_], Digest::MD5::md5_hex $data[$_])
		538	} 0.. $#$src;
		539
		540
		541	my $dbmd5 = db_get cache => "$id/md5";
		542	if ($dbmd5 eq $md5) {
		543	db_put cache => "$id/meta", $meta;
		544
		545	return db_get cache => "$id/data";
		546	}
		547	}
		548
		549	my $t1 = Time::HiRes::time;
		550	my $data = $process->(\@data);
		551	my $t2 = Time::HiRes::time;
		552
		553	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		554
		555	db_put cache => "$id/data", $data;
		556	db_put cache => "$id/md5" , $md5;
		557	db_put cache => "$id/meta", $meta;
		558
		559	return $data;
		560	}
		561
		562	db_get cache => "$id/data"
		563	}
		564
		565	=item cf::datalog type => key => value, ...
		566
		567	Log a datalog packet of the given type with the given key-value pairs.
		568
		569	=cut
		570
		571	sub datalog($@) {
		572	my ($type, %kv) = @_;
		573	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
142	}	574	}
143		575
144	=back	576	=back
145		577
146	=cut	578	=cut
…		…
153	attach callbacks/event handlers (a collection of which is called an "attachment")	585	attach callbacks/event handlers (a collection of which is called an "attachment")
154	to it. All such attachable objects support the following methods.	586	to it. All such attachable objects support the following methods.
155		587
156	In the following description, CLASS can be any of C<global>, C<object>	588	In the following description, CLASS can be any of C<global>, C<object>
157	C<player>, C<client> or C<map> (i.e. the attachable objects in	589	C<player>, C<client> or C<map> (i.e. the attachable objects in
158	crossfire+).	590	Crossfire TRT).
159		591
160	=over 4	592	=over 4
161		593
162	=item $attachable->attach ($attachment, key => $value...)	594	=item $attachable->attach ($attachment, key => $value...)
163		595
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	709	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	710	our @CB_MAP = ();
279		711
280	my %attachment;	712	my %attachment;
281		713
		714	sub cf::attachable::thawer_merge {
		715	# simply override everything except _meta
		716	local $_[0]{_meta};
		717	%{$_[0]} = %{$_[1]};
		718	}
		719
282	sub _attach_cb($$$$) {	720	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	721	my ($registry, $event, $prio, $cb) = @_;
284		722
285	use sort 'stable';	723	use sort 'stable';
286		724
…		…
320	$registry = $CB_TYPE[$object_type] ||= [];	758	$registry = $CB_TYPE[$object_type] ||= [];
321		759
322	} elsif ($type eq "subtype") {	760	} elsif ($type eq "subtype") {
323	defined $object_type or Carp::croak "subtype specified without type";	761	defined $object_type or Carp::croak "subtype specified without type";
324	my $object_subtype = shift @arg;	762	my $object_subtype = shift @arg;
325	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	763	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
326		764
327	} elsif ($type eq "package") {	765	} elsif ($type eq "package") {
328	my $pkg = shift @arg;	766	my $pkg = shift @arg;
329		767
330	while (my ($name, $id) = each %cb_id) {	768	while (my ($name, $id) = each %cb_id) {
…		…
359	_attach $registry, $klass, @attach;	797	_attach $registry, $klass, @attach;
360	}	798	}
361		799
362	$obj->{$name} = \%arg;	800	$obj->{$name} = \%arg;
363	} else {	801	} else {
364	warn "object uses attachment '$name' that is not available, postponing.\n";	802	warn "object uses attachment '$name' which is not available, postponing.\n";
365	}	803	}
366		804
367	$obj->{_attachment}{$name} = undef;	805	$obj->{_attachment}{$name} = undef;
368	}	806	}
369		807
…		…
371	if (ref $_[0]) {	809	if (ref $_[0]) {
372	_object_attach @_;	810	_object_attach @_;
373	} else {	811	} else {
374	_attach shift->_attach_registry, @_;	812	_attach shift->_attach_registry, @_;
375	}	813	}
		814	_recalc_want;
376	};	815	};
377		816
378	# all those should be optimised	817	# all those should be optimised
379	sub cf::attachable::detach {	818	sub cf::attachable::detach {
380	my ($obj, $name) = @_;	819	my ($obj, $name) = @_;
…		…
383	delete $obj->{_attachment}{$name};	822	delete $obj->{_attachment}{$name};
384	reattach ($obj);	823	reattach ($obj);
385	} else {	824	} else {
386	Carp::croak "cannot, currently, detach class attachments";	825	Carp::croak "cannot, currently, detach class attachments";
387	}	826	}
		827	_recalc_want;
388	};	828	};
389		829
390	sub cf::attachable::attached {	830	sub cf::attachable::attached {
391	my ($obj, $name) = @_;	831	my ($obj, $name) = @_;
392		832
…		…
454	=cut	894	=cut
455		895
456	#############################################################################	896	#############################################################################
457	# object support	897	# object support
458		898
		899	sub reattach {
		900	# basically do the same as instantiate, without calling instantiate
		901	my ($obj) = @_;
		902
		903	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		904
		905	my $registry = $obj->registry;
		906
		907	@$registry = ();
		908
		909	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		910
		911	for my $name (keys %{ $obj->{_attachment} || {} }) {
		912	if (my $attach = $attachment{$name}) {
		913	for (@$attach) {
		914	my ($klass, @attach) = @$_;
		915	_attach $registry, $klass, @attach;
		916	}
		917	} else {
		918	warn "object uses attachment '$name' that is not available, postponing.\n";
		919	}
		920	}
		921	}
		922
459	cf::attachable->attach (	923	cf::attachable->attach (
460	prio => -1000000,	924	prio => -1000000,
461	on_instantiate => sub {	925	on_instantiate => sub {
462	my ($obj, $data) = @_;	926	my ($obj, $data) = @_;
463		927
…		…
467	my ($name, $args) = @$_;	931	my ($name, $args) = @$_;
468		932
469	$obj->attach ($name, %{$args || {} });	933	$obj->attach ($name, %{$args || {} });
470	}	934	}
471	},	935	},
472	on_reattach => sub {	936	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($obj) = @_;
475	my $registry = $obj->registry;
476
477	@$registry = ();
478
479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
480
481	for my $name (keys %{ $obj->{_attachment} || {} }) {
482	if (my $attach = $attachment{$name}) {
483	for (@$attach) {
484	my ($klass, @attach) = @$_;
485	_attach $registry, $klass, @attach;
486	}
487	} else {
488	warn "object uses attachment '$name' that is not available, postponing.\n";
489	}
490	}
491	},
492	on_clone => sub {	937	on_clone => sub {
493	my ($src, $dst) = @_;	938	my ($src, $dst) = @_;
494		939
495	@{$dst->registry} = @{$src->registry};	940	@{$dst->registry} = @{$src->registry};
496		941
…		…
502	);	947	);
503		948
504	sub object_freezer_save {	949	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	950	my ($filename, $rdata, $objs) = @_;
506		951
		952	sync_job {
507	if (length $$rdata) {	953	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	954	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	955	$filename, length $$rdata, scalar @$objs;
510		956
511	if (open my $fh, ">:raw", "$filename~") {	957	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	958	chmod SAVE_MODE, $fh;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	959	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		960	aio_fsync $fh if $cf::USE_FSYNC;
519	close $fh;	961	close $fh;
		962
		963	if (@$objs) {
		964	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		965	chmod SAVE_MODE, $fh;
		966	my $data = Storable::nfreeze { version => 1, objs => $objs };
		967	aio_write $fh, 0, (length $data), $data, 0;
		968	aio_fsync $fh if $cf::USE_FSYNC;
		969	close $fh;
520	rename "$filename.pst~", "$filename.pst";	970	aio_rename "$filename.pst~", "$filename.pst";
		971	}
		972	} else {
		973	aio_unlink "$filename.pst";
		974	}
		975
		976	aio_rename "$filename~", $filename;
521	} else {	977	} else {
522	unlink "$filename.pst";	978	warn "FATAL: $filename~: $!\n";
523	}	979	}
524
525	rename "$filename~", $filename;
526	} else {	980	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	981	aio_unlink $filename;
531	unlink "$filename.pst";	982	aio_unlink "$filename.pst";
		983	}
532	}	984	}
533	}	985	}
534		986
535	sub object_freezer_as_string {	987	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	988	my ($rdata, $objs) = @_;
…		…
541	}	993	}
542		994
543	sub object_thawer_load {	995	sub object_thawer_load {
544	my ($filename) = @_;	996	my ($filename) = @_;
545		997
546	local $/;	998	my ($data, $av);
547		999
548	my $av;	1000	(aio_load $filename, $data) >= 0
		1001	or return;
549		1002
550	#TODO: use sysread etc.	1003	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	1004	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	1005	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	1006	$av = eval { (Storable::thaw $av)->{objs} };
555	}	1007	}
		1008
		1009	warn sprintf "loading %s (%d)\n",
		1010	$filename, length $data, scalar @{$av || []};
556	return ($data, $av);	1011	return ($data, $av);
557	}
558
559	()
560	}	1012	}
		1013
		1014	=head2 COMMAND CALLBACKS
		1015
		1016	=over 4
		1017
		1018	=cut
561		1019
562	#############################################################################	1020	#############################################################################
563	# command handling &c	1021	# command handling &c
564		1022
565	=item cf::register_command $name => \&callback($ob,$args);	1023	=item cf::register_command $name => \&callback($ob,$args);
…		…
578	push @{ $COMMAND{$name} }, [$caller, $cb];	1036	push @{ $COMMAND{$name} }, [$caller, $cb];
579	}	1037	}
580		1038
581	=item cf::register_extcmd $name => \&callback($pl,$packet);	1039	=item cf::register_extcmd $name => \&callback($pl,$packet);
582		1040
583	Register a callbackf ro execution when the client sends an extcmd packet.	1041	Register a callback for execution when the client sends an (synchronous)
		1042	extcmd packet. Ext commands will be processed in the order they are
		1043	received by the server, like other user commands. The first argument is
		1044	the logged-in player. Ext commands can only be processed after a player
		1045	has logged in successfully.
584		1046
585	If the callback returns something, it is sent back as if reply was being	1047	If the callback returns something, it is sent back as if reply was being
586	called.	1048	called.
587		1049
		1050	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1051
		1052	Register a callback for execution when the client sends an (asynchronous)
		1053	exticmd packet. Exti commands are processed by the server as soon as they
		1054	are received, i.e. out of order w.r.t. other commands. The first argument
		1055	is a client socket. Exti commands can be received anytime, even before
		1056	log-in.
		1057
		1058	If the callback returns something, it is sent back as if reply was being
		1059	called.
		1060
588	=cut	1061	=cut
589		1062
590	sub register_extcmd {	1063	sub register_extcmd {
591	my ($name, $cb) = @_;	1064	my ($name, $cb) = @_;
592		1065
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	1066	$EXTCMD{$name} = $cb;
		1067	}
		1068
		1069	sub register_exticmd {
		1070	my ($name, $cb) = @_;
		1071
		1072	$EXTICMD{$name} = $cb;
597	}	1073	}
598		1074
599	cf::player->attach (	1075	cf::player->attach (
600	on_command => sub {	1076	on_command => sub {
601	my ($pl, $name, $params) = @_;	1077	my ($pl, $name, $params) = @_;
…		…
610	cf::override;	1086	cf::override;
611	},	1087	},
612	on_extcmd => sub {	1088	on_extcmd => sub {
613	my ($pl, $buf) = @_;	1089	my ($pl, $buf) = @_;
614		1090
615	my $msg = eval { from_json $buf };	1091	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
616		1092
617	if (ref $msg) {	1093	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1094	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	1095	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	1096	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	1097	}
622	}	1098	}
623	} else {	1099	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1100	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		1102
627	cf::override;	1103	cf::override;
628	},	1104	},
629	);	1105	);
630		1106
		1107	sub load_extensions {
		1108	cf::sync_job {
		1109	my %todo;
		1110
		1111	for my $path (<$LIBDIR/*.ext>) {
		1112	next unless -r $path;
		1113
		1114	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1115	my $base = $1;
		1116	my $pkg = $1;
		1117	$pkg =~ s/[^[:word:]]/_/g;
		1118	$pkg = "ext::$pkg";
		1119
		1120	open my $fh, "<:utf8", $path
		1121	or die "$path: $!";
		1122
		1123	my $source = do { local $/; <$fh> };
		1124
		1125	my %ext = (
		1126	path => $path,
		1127	base => $base,
		1128	pkg => $pkg,
		1129	);
		1130
		1131	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1132	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1133
		1134	$ext{source} =
		1135	"package $pkg; use strict; use utf8;\n"
		1136	. "#line 1 \"$path\"\n{\n"
		1137	. $source
		1138	. "\n};\n1";
		1139
		1140	$todo{$base} = \%ext;
		1141	}
		1142
		1143	my %done;
		1144	while (%todo) {
		1145	my $progress;
		1146
		1147	while (my ($k, $v) = each %todo) {
		1148	for (split /,\s*/, $v->{meta}{depends}) {
		1149	goto skip
		1150	unless exists $done{$_};
		1151	}
		1152
		1153	warn "... loading '$k' into '$v->{pkg}'\n";
		1154
		1155	unless (eval $v->{source}) {
		1156	my $msg = $@ ? "$v->{path}: $@\n"
		1157	: "$v->{base}: extension inactive.\n";
		1158
		1159	if (exists $v->{meta}{mandatory}) {
		1160	warn $msg;
		1161	warn "mandatory extension failed to load, exiting.\n";
		1162	exit 1;
		1163	}
		1164
		1165	warn $msg;
		1166	}
		1167
		1168	$done{$k} = delete $todo{$k};
		1169	push @EXTS, $v->{pkg};
		1170	$progress = 1;
		1171	}
		1172
		1173	skip:
		1174	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1175	unless $progress;
		1176	}
		1177	};
		1178	}
		1179
		1180	#############################################################################
		1181
		1182	=back
		1183
		1184	=head2 CORE EXTENSIONS
		1185
		1186	Functions and methods that extend core crossfire objects.
		1187
		1188	=cut
		1189
		1190	package cf::player;
		1191
		1192	use Coro::AIO;
		1193
		1194	=head3 cf::player
		1195
		1196	=over 4
		1197
		1198	=item cf::player::find $login
		1199
		1200	Returns the given player object, loading it if necessary (might block).
		1201
		1202	=cut
		1203
		1204	sub playerdir($) {
		1205	"$PLAYERDIR/"
		1206	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1207	}
		1208
		1209	sub path($) {
		1210	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1211
		1212	(playerdir $login) . "/playerdata"
		1213	}
		1214
		1215	sub find_active($) {
		1216	$cf::PLAYER{$_[0]}
		1217	and $cf::PLAYER{$_[0]}->active
		1218	and $cf::PLAYER{$_[0]}
		1219	}
		1220
		1221	sub exists($) {
		1222	my ($login) = @_;
		1223
		1224	$cf::PLAYER{$login}
		1225	or cf::sync_job { !aio_stat path $login }
		1226	}
		1227
		1228	sub find($) {
		1229	return $cf::PLAYER{$_[0]} || do {
		1230	my $login = $_[0];
		1231
		1232	my $guard = cf::lock_acquire "user_find:$login";
		1233
		1234	$cf::PLAYER{$_[0]} || do {
		1235	# rename old playerfiles to new ones
		1236	#TODO: remove when no longer required
		1237	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1238	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1239	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1240	aio_unlink +(playerdir $login) . "/$login.pl";
		1241
		1242	my $pl = load_pl path $login
		1243	or return;
		1244	$cf::PLAYER{$login} = $pl
		1245	}
		1246	}
		1247	}
		1248
		1249	sub save($) {
		1250	my ($pl) = @_;
		1251
		1252	return if $pl->{deny_save};
		1253
		1254	my $path = path $pl;
		1255	my $guard = cf::lock_acquire "user_save:$path";
		1256
		1257	return if $pl->{deny_save};
		1258
		1259	aio_mkdir playerdir $pl, 0770;
		1260	$pl->{last_save} = $cf::RUNTIME;
		1261
		1262	$pl->save_pl ($path);
		1263	Coro::cede;
		1264	}
		1265
		1266	sub new($) {
		1267	my ($login) = @_;
		1268
		1269	my $self = create;
		1270
		1271	$self->ob->name ($login);
		1272	$self->{deny_save} = 1;
		1273
		1274	$cf::PLAYER{$login} = $self;
		1275
		1276	$self
		1277	}
		1278
		1279	=item $pl->quit_character
		1280
		1281	Nukes the player without looking back. If logged in, the connection will
		1282	be destroyed. May block for a long time.
		1283
		1284	=cut
		1285
		1286	sub quit_character {
		1287	my ($pl) = @_;
		1288
		1289	my $name = $pl->ob->name;
		1290
		1291	$pl->{deny_save} = 1;
		1292	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1293
		1294	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1295	$pl->deactivate;
		1296	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1297	$pl->ns->destroy if $pl->ns;
		1298
		1299	my $path = playerdir $pl;
		1300	my $temp = "$path~$cf::RUNTIME~deleting~";
		1301	aio_rename $path, $temp;
		1302	delete $cf::PLAYER{$pl->ob->name};
		1303	$pl->destroy;
		1304
		1305	my $prefix = qr<^~\Q$name\E/>;
		1306
		1307	# nuke player maps
		1308	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1309
		1310	IO::AIO::aio_rmtree $temp;
		1311	}
		1312
		1313	=item $pl->kick
		1314
		1315	Kicks a player out of the game. This destroys the connection.
		1316
		1317	=cut
		1318
		1319	sub kick {
		1320	my ($pl, $kicker) = @_;
		1321
		1322	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1323	$pl->killer ("kicked");
		1324	$pl->ns->destroy;
		1325	}
		1326
		1327	=item cf::player::list_logins
		1328
		1329	Returns am arrayref of all valid playernames in the system, can take a
		1330	while and may block, so not sync_job-capable, ever.
		1331
		1332	=cut
		1333
		1334	sub list_logins {
		1335	my $dirs = aio_readdir $PLAYERDIR
		1336	or return [];
		1337
		1338	my @logins;
		1339
		1340	for my $login (@$dirs) {
		1341	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1342	aio_read $fh, 0, 512, my $buf, 0 or next;
		1343	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1344
		1345	utf8::decode $login;
		1346	push @logins, $login;
		1347	}
		1348
		1349	\@logins
		1350	}
		1351
		1352	=item $player->maps
		1353
		1354	Returns an arrayref of map paths that are private for this
		1355	player. May block.
		1356
		1357	=cut
		1358
		1359	sub maps($) {
		1360	my ($pl) = @_;
		1361
		1362	$pl = ref $pl ? $pl->ob->name : $pl;
		1363
		1364	my $files = aio_readdir playerdir $pl
		1365	or return;
		1366
		1367	my @paths;
		1368
		1369	for (@$files) {
		1370	utf8::decode $_;
		1371	next if /\.(?:pl|pst)$/;
		1372	next unless /^$PATH_SEP/o;
		1373
		1374	push @paths, cf::map::normalise "~$pl/$_";
		1375	}
		1376
		1377	\@paths
		1378	}
		1379
		1380	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1381
		1382	Expand crossfire pod fragments into protocol xml.
		1383
		1384	=cut
		1385
		1386	sub expand_cfpod {
		1387	((my $self), (local $_)) = @_;
		1388
		1389	# escape & and <
		1390	s/&/&amp;/g;
		1391	s/(?<![BIUGH])</&lt;/g;
		1392
		1393	# this is buggy, it needs to properly take care of nested <'s
		1394
		1395	1 while
		1396	# replace B<>, I<>, U<> etc.
		1397	s/B<([^\>]*)>/<b>$1<\/b>/
		1398	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1399	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1400	# replace G<male|female> tags
		1401	|| s{G<([^>|]*)\|([^>]*)>}{
		1402	$self->gender ? $2 : $1
		1403	}ge
		1404	# replace H<hint text>
		1405	|| s{H<([^\>]*)>}
		1406	{
		1407	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1408	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1409	"")
		1410	[$self->{hintmode}]
		1411	}ge;
		1412
		1413	# create single paragraphs (very hackish)
		1414	s/(?<=\S)\n(?=\w)/ /g;
		1415
		1416	# compress some whitespace
		1417	s/\s+\n/\n/g; # ws line-ends
		1418	s/\n\n+/\n/g; # double lines
		1419	s/^\n+//; # beginning lines
		1420	s/\n+$//; # ending lines
		1421
		1422	$_
		1423	}
		1424
		1425	sub hintmode {
		1426	$_[0]{hintmode} = $_[1] if @_ > 1;
		1427	$_[0]{hintmode}
		1428	}
		1429
		1430	=item $player->ext_reply ($msgid, %msg)
		1431
		1432	Sends an ext reply to the player.
		1433
		1434	=cut
		1435
		1436	sub ext_reply($$%) {
		1437	my ($self, $id, %msg) = @_;
		1438
		1439	$msg{msgid} = $id;
		1440	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1441	}
		1442
		1443	=item $player->ext_event ($type, %msg)
		1444
		1445	Sends an ext event to the client.
		1446
		1447	=cut
		1448
		1449	sub ext_event($$%) {
		1450	my ($self, $type, %msg) = @_;
		1451
		1452	$self->ns->ext_event ($type, %msg);
		1453	}
		1454
		1455	=head3 cf::region
		1456
		1457	=over 4
		1458
		1459	=cut
		1460
		1461	package cf::region;
		1462
		1463	=item cf::region::find_by_path $path
		1464
		1465	Tries to decuce the likely region for a map knowing only its path.
		1466
		1467	=cut
		1468
		1469	sub find_by_path($) {
		1470	my ($path) = @_;
		1471
		1472	my ($match, $specificity);
		1473
		1474	for my $region (list) {
		1475	if ($region->match && $path =~ $region->match) {
		1476	($match, $specificity) = ($region, $region->specificity)
		1477	if $region->specificity > $specificity;
		1478	}
		1479	}
		1480
		1481	$match
		1482	}
		1483
		1484	=back
		1485
		1486	=head3 cf::map
		1487
		1488	=over 4
		1489
		1490	=cut
		1491
		1492	package cf::map;
		1493
		1494	use Fcntl;
		1495	use Coro::AIO;
		1496
		1497	use overload
		1498	'""' => \&as_string,
		1499	fallback => 1;
		1500
		1501	our $MAX_RESET = 3600;
		1502	our $DEFAULT_RESET = 3000;
		1503
		1504	sub generate_random_map {
		1505	my ($self, $rmp) = @_;
		1506	# mit "rum" bekleckern, nicht
		1507	$self->_create_random_map (
		1508	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1509	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1510	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1511	$rmp->{exit_on_final_map},
		1512	$rmp->{xsize}, $rmp->{ysize},
		1513	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1514	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1515	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1516	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1517	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1518	(cf::region::find $rmp->{region}), $rmp->{custom}
		1519	)
		1520	}
		1521
		1522	=item cf::map->register ($regex, $prio)
		1523
		1524	Register a handler for the map path matching the given regex at the
		1525	givne priority (higher is better, built-in handlers have priority 0, the
		1526	default).
		1527
		1528	=cut
		1529
631	sub register {	1530	sub register {
		1531	my (undef, $regex, $prio) = @_;
		1532	my $pkg = caller;
		1533
		1534	no strict;
		1535	push @{"$pkg\::ISA"}, __PACKAGE__;
		1536
		1537	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1538	}
		1539
		1540	# also paths starting with '/'
		1541	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1542
		1543	sub thawer_merge {
632	my ($base, $pkg) = @_;	1544	my ($self, $merge) = @_;
633		1545
634	#TODO	1546	# we have to keep some variables in memory intact
635	}	1547	local $self->{path};
		1548	local $self->{load_path};
636		1549
637	sub load_extension {	1550	$self->SUPER::thawer_merge ($merge);
		1551	}
		1552
		1553	sub normalise {
638	my ($path) = @_;	1554	my ($path, $base) = @_;
639		1555
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1556	$path = "$path"; # make sure its a string
641	my $base = $1;
642	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";
645		1557
646	warn "loading '$path' into '$pkg'\n";	1558	$path =~ s/\.map$//;
647		1559
648	open my $fh, "<:utf8", $path	1560	# map plan:
649	or die "$path: $!";	1561	#
		1562	# /! non-realised random map exit (special hack!)
		1563	# {... are special paths that are not being touched
		1564	# ?xxx/... are special absolute paths
		1565	# ?random/... random maps
		1566	# /... normal maps
		1567	# ~user/... per-player map of a specific user
650		1568
651	my $source =	1569	$path =~ s/$PATH_SEP/\//go;
652	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })
655	. "\n};\n1";
656		1570
657	eval $source	1571	# treat it as relative path if it starts with
658	or die $@ ? "$path: $@\n"	1572	# something that looks reasonable
659	: "extension disabled.\n";	1573	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1574	$base or Carp::carp "normalise called with relative path and no base: '$path'";
660		1575
661	push @exts, $pkg;	1576	$base =~ s{[^/]+/?$}{};
662	$ext_pkg{$base} = $pkg;	1577	$path = "$base/$path";
663
664	# no strict 'refs';
665	# @{"$pkg\::ISA"} = ext::;
666
667	register $base, $pkg;
668	}
669
670	sub unload_extension {
671	my ($pkg) = @_;
672
673	warn "removing extension $pkg\n";
674
675	# remove hooks
676	#TODO
677	# for my $idx (0 .. $#PLUGIN_EVENT) {
678	# delete $hook[$idx]{$pkg};
679	# }	1578	}
680		1579
681	# remove commands	1580	for ($path) {
682	for my $name (keys %COMMAND) {	1581	redo if s{//}{/};
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1582	redo if s{/\.?/}{/};
		1583	redo if s{/[^/]+/\.\./}{/};
		1584	}
684		1585
685	if (@cb) {	1586	$path
686	$COMMAND{$name} = \@cb;	1587	}
		1588
		1589	sub new_from_path {
		1590	my (undef, $path, $base) = @_;
		1591
		1592	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1593
		1594	$path = normalise $path, $base;
		1595
		1596	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1597	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1598	my $self = bless cf::map::new, $pkg;
		1599	$self->{path} = $path; $self->path ($path);
		1600	$self->init; # pass $1 etc.
		1601	return $self;
		1602	}
		1603	}
		1604
		1605	Carp::carp "unable to resolve path '$path' (base '$base').";
		1606	()
		1607	}
		1608
		1609	sub init {
		1610	my ($self) = @_;
		1611
		1612	$self
		1613	}
		1614
		1615	sub as_string {
		1616	my ($self) = @_;
		1617
		1618	"$self->{path}"
		1619	}
		1620
		1621	# the displayed name, this is a one way mapping
		1622	sub visible_name {
		1623	&as_string
		1624	}
		1625
		1626	# the original (read-only) location
		1627	sub load_path {
		1628	my ($self) = @_;
		1629
		1630	"$MAPDIR/$self->{path}.map"
		1631	}
		1632
		1633	# the temporary/swap location
		1634	sub save_path {
		1635	my ($self) = @_;
		1636
		1637	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1638	"$TMPDIR/$path.map"
		1639	}
		1640
		1641	# the unique path, undef == no special unique path
		1642	sub uniq_path {
		1643	my ($self) = @_;
		1644
		1645	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1646	"$UNIQUEDIR/$path"
		1647	}
		1648
		1649	# and all this just because we cannot iterate over
		1650	# all maps in C++...
		1651	sub change_all_map_light {
		1652	my ($change) = @_;
		1653
		1654	$_->change_map_light ($change)
		1655	for grep $_->outdoor, values %cf::MAP;
		1656	}
		1657
		1658	sub decay_objects {
		1659	my ($self) = @_;
		1660
		1661	return if $self->{deny_reset};
		1662
		1663	$self->do_decay_objects;
		1664	}
		1665
		1666	sub unlink_save {
		1667	my ($self) = @_;
		1668
		1669	utf8::encode (my $save = $self->save_path);
		1670	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1671	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1672	}
		1673
		1674	sub load_header_from($) {
		1675	my ($self, $path) = @_;
		1676
		1677	utf8::encode $path;
		1678	#aio_open $path, O_RDONLY, 0
		1679	# or return;
		1680
		1681	$self->_load_header ($path)
		1682	or return;
		1683
		1684	$self->{load_path} = $path;
		1685
		1686	1
		1687	}
		1688
		1689	sub load_header_orig {
		1690	my ($self) = @_;
		1691
		1692	$self->load_header_from ($self->load_path)
		1693	}
		1694
		1695	sub load_header_temp {
		1696	my ($self) = @_;
		1697
		1698	$self->load_header_from ($self->save_path)
		1699	}
		1700
		1701	sub prepare_temp {
		1702	my ($self) = @_;
		1703
		1704	$self->last_access ((delete $self->{last_access})
		1705	|| $cf::RUNTIME); #d#
		1706	# safety
		1707	$self->{instantiate_time} = $cf::RUNTIME
		1708	if $self->{instantiate_time} > $cf::RUNTIME;
		1709	}
		1710
		1711	sub prepare_orig {
		1712	my ($self) = @_;
		1713
		1714	$self->{load_original} = 1;
		1715	$self->{instantiate_time} = $cf::RUNTIME;
		1716	$self->last_access ($cf::RUNTIME);
		1717	$self->instantiate;
		1718	}
		1719
		1720	sub load_header {
		1721	my ($self) = @_;
		1722
		1723	if ($self->load_header_temp) {
		1724	$self->prepare_temp;
687	} else {	1725	} else {
688	delete $COMMAND{$name};	1726	$self->load_header_orig
689	}	1727	or return;
		1728	$self->prepare_orig;
		1729	}
		1730
		1731	$self->{deny_reset} = 1
		1732	if $self->no_reset;
		1733
		1734	$self->default_region (cf::region::find_by_path $self->{path})
		1735	unless $self->default_region;
		1736
690	}	1737	1
		1738	}
691		1739
692	# remove extcmds	1740	sub find;
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1741	sub find {
694	delete $EXTCMD{$name};	1742	my ($path, $origin) = @_;
		1743
		1744	$path = normalise $path, $origin && $origin->path;
		1745
		1746	cf::lock_wait "map_find:$path";
		1747
		1748	$cf::MAP{$path} || do {
		1749	my $guard = cf::lock_acquire "map_find:$path";
		1750	my $map = new_from_path cf::map $path
		1751	or return;
		1752
		1753	$map->{last_save} = $cf::RUNTIME;
		1754
		1755	$map->load_header
		1756	or return;
		1757
		1758	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1759	# doing this can freeze the server in a sync job, obviously
		1760	#$cf::WAIT_FOR_TICK->wait;
		1761	$map->reset;
		1762	undef $guard;
		1763	return find $path;
		1764	}
		1765
		1766	$cf::MAP{$path} = $map
		1767	}
		1768	}
		1769
		1770	sub pre_load { }
		1771	sub post_load { }
		1772
		1773	sub load {
		1774	my ($self) = @_;
		1775
		1776	local $self->{deny_reset} = 1; # loading can take a long time
		1777
		1778	my $path = $self->{path};
		1779
695	}	1780	{
		1781	my $guard = cf::lock_acquire "map_load:$path";
696		1782
697	if (my $cb = $pkg->can ("unload")) {	1783	return if $self->in_memory != cf::MAP_SWAPPED;
698	eval {	1784
699	$cb->($pkg);	1785	$self->in_memory (cf::MAP_LOADING);
		1786
		1787	$self->alloc;
		1788
		1789	$self->pre_load;
		1790	Coro::cede;
		1791
		1792	$self->_load_objects ($self->{load_path}, 1)
		1793	or return;
		1794
		1795	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1796	if delete $self->{load_original};
		1797
		1798	if (my $uniq = $self->uniq_path) {
		1799	utf8::encode $uniq;
		1800	if (aio_open $uniq, O_RDONLY, 0) {
		1801	$self->clear_unique_items;
		1802	$self->_load_objects ($uniq, 0);
700	1	1803	}
701	} or warn "$pkg unloaded, but with errors: $@";	1804	}
702	}
703		1805
704	Symbol::delete_package $pkg;	1806	Coro::cede;
705	}	1807	# now do the right thing for maps
		1808	$self->link_multipart_objects;
		1809	$self->difficulty ($self->estimate_difficulty)
		1810	unless $self->difficulty;
		1811	Coro::cede;
706		1812
707	sub load_extensions {	1813	unless ($self->{deny_activate}) {
708	for my $ext (<$LIBDIR/*.ext>) {	1814	$self->decay_objects;
709	next unless -r $ext;	1815	$self->fix_auto_apply;
710	eval {	1816	$self->update_buttons;
711	load_extension $ext;	1817	Coro::cede;
712	1	1818	$self->set_darkness_map;
713	} or warn "$ext not loaded: $@";	1819	Coro::cede;
714	}	1820	$self->activate;
715	}	1821	}
716		1822
717	#############################################################################	1823	$self->in_memory (cf::MAP_IN_MEMORY);
718	# load/save/clean perl data associated with a map	1824	}
719		1825
720	*cf::mapsupport::on_clean = sub {	1826	$self->post_load;
		1827	}
		1828
		1829	sub customise_for {
		1830	my ($self, $ob) = @_;
		1831
		1832	return find "~" . $ob->name . "/" . $self->{path}
		1833	if $self->per_player;
		1834
		1835	# return find "?party/" . $ob->name . "/" . $self->{path}
		1836	# if $self->per_party;
		1837
		1838	$self
		1839	}
		1840
		1841	# find and load all maps in the 3x3 area around a map
		1842	sub load_diag {
721	my ($map) = @_;	1843	my ($map) = @_;
722		1844
723	my $path = $map->tmpname;	1845	my @diag; # diagonal neighbours
724	defined $path or return;
725		1846
726	unlink "$path.pst";	1847	for (0 .. 3) {
727	};	1848	my $neigh = $map->tile_path ($_)
		1849	or next;
		1850	$neigh = find $neigh, $map
		1851	or next;
		1852	$neigh->load;
728		1853
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1854	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1855	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1856	}
730		1857
731	#############################################################################	1858	for (@diag) {
732	# load/save perl data associated with player->ob objects	1859	my $neigh = find @$_
733		1860	or next;
734	sub all_objects(@) {	1861	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1862	}
736	}	1863	}
737		1864
738	# TODO: compatibility cruft, remove when no longer needed	1865	sub find_sync {
739	cf::player->attach (	1866	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1867
743	for my $o (all_objects $pl->ob) {	1868	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1869	}
745	$o->set_ob_key_value ("_perl_data");
746		1870
747	%$o = %{ Storable::thaw pack "H*", $value };	1871	sub do_load_sync {
		1872	my ($map) = @_;
		1873
		1874	cf::sync_job { $map->load };
		1875	}
		1876
		1877	our %MAP_PREFETCH;
		1878	our $MAP_PREFETCHER = undef;
		1879
		1880	sub find_async {
		1881	my ($path, $origin) = @_;
		1882
		1883	$path = normalise $path, $origin && $origin->{path};
		1884
		1885	if (my $map = $cf::MAP{$path}) {
		1886	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1887	}
		1888
		1889	undef $MAP_PREFETCH{$path};
		1890	$MAP_PREFETCHER ||= cf::async {
		1891	while (%MAP_PREFETCH) {
		1892	for my $path (keys %MAP_PREFETCH) {
		1893	my $map = find $path
		1894	or next;
		1895	$map->load;
		1896
		1897	delete $MAP_PREFETCH{$path};
748	}	1898	}
749	}	1899	}
		1900	undef $MAP_PREFETCHER;
		1901	};
		1902	$MAP_PREFETCHER->prio (6);
		1903
		1904	()
		1905	}
		1906
		1907	sub save {
		1908	my ($self) = @_;
		1909
		1910	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1911
		1912	$self->{last_save} = $cf::RUNTIME;
		1913
		1914	return unless $self->dirty;
		1915
		1916	my $save = $self->save_path; utf8::encode $save;
		1917	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1918
		1919	$self->{load_path} = $save;
		1920
		1921	return if $self->{deny_save};
		1922
		1923	local $self->{last_access} = $self->last_access;#d#
		1924
		1925	cf::async {
		1926	$_->contr->save for $self->players;
		1927	};
		1928
		1929	if ($uniq) {
		1930	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1931	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1932	} else {
		1933	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
750	},	1934	}
751	);	1935	}
752		1936
753	#############################################################################	1937	sub swap_out {
		1938	my ($self) = @_;
754		1939
755	=head2 CORE EXTENSIONS	1940	# save first because save cedes
		1941	$self->save;
756		1942
757	Functions and methods that extend core crossfire objects.	1943	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1944
759	=head3 cf::player	1945	return if $self->players;
		1946	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1947	return if $self->{deny_save};
		1948
		1949	$self->clear;
		1950	$self->in_memory (cf::MAP_SWAPPED);
		1951	}
		1952
		1953	sub reset_at {
		1954	my ($self) = @_;
		1955
		1956	# TODO: safety, remove and allow resettable per-player maps
		1957	return 1e99 if $self->{deny_reset};
		1958
		1959	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1960	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1961
		1962	$time + $to
		1963	}
		1964
		1965	sub should_reset {
		1966	my ($self) = @_;
		1967
		1968	$self->reset_at <= $cf::RUNTIME
		1969	}
		1970
		1971	sub reset {
		1972	my ($self) = @_;
		1973
		1974	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1975
		1976	return if $self->players;
		1977
		1978	warn "resetting map ", $self->path;
		1979
		1980	$self->in_memory (cf::MAP_SWAPPED);
		1981
		1982	# need to save uniques path
		1983	unless ($self->{deny_save}) {
		1984	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1985
		1986	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1987	if $uniq;
		1988	}
		1989
		1990	delete $cf::MAP{$self->path};
		1991
		1992	$self->clear;
		1993
		1994	$_->clear_links_to ($self) for values %cf::MAP;
		1995
		1996	$self->unlink_save;
		1997	$self->destroy;
		1998	}
		1999
		2000	my $nuke_counter = "aaaa";
		2001
		2002	sub nuke {
		2003	my ($self) = @_;
		2004
		2005	delete $cf::MAP{$self->path};
		2006
		2007	$self->unlink_save;
		2008
		2009	bless $self, "cf::map";
		2010	delete $self->{deny_reset};
		2011	$self->{deny_save} = 1;
		2012	$self->reset_timeout (1);
		2013	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2014
		2015	$cf::MAP{$self->path} = $self;
		2016
		2017	$self->reset; # polite request, might not happen
		2018	}
		2019
		2020	=item $maps = cf::map::tmp_maps
		2021
		2022	Returns an arrayref with all map paths of currently instantiated and saved
		2023	maps. May block.
		2024
		2025	=cut
		2026
		2027	sub tmp_maps() {
		2028	[
		2029	map {
		2030	utf8::decode $_;
		2031	/\.map$/
		2032	? normalise $_
		2033	: ()
		2034	} @{ aio_readdir $TMPDIR or [] }
		2035	]
		2036	}
		2037
		2038	=item $maps = cf::map::random_maps
		2039
		2040	Returns an arrayref with all map paths of currently instantiated and saved
		2041	random maps. May block.
		2042
		2043	=cut
		2044
		2045	sub random_maps() {
		2046	[
		2047	map {
		2048	utf8::decode $_;
		2049	/\.map$/
		2050	? normalise "?random/$_"
		2051	: ()
		2052	} @{ aio_readdir $RANDOMDIR or [] }
		2053	]
		2054	}
		2055
		2056	=item cf::map::unique_maps
		2057
		2058	Returns an arrayref of paths of all shared maps that have
		2059	instantiated unique items. May block.
		2060
		2061	=cut
		2062
		2063	sub unique_maps() {
		2064	[
		2065	map {
		2066	utf8::decode $_;
		2067	/\.map$/
		2068	? normalise $_
		2069	: ()
		2070	} @{ aio_readdir $UNIQUEDIR or [] }
		2071	]
		2072	}
		2073
		2074	package cf;
		2075
		2076	=back
		2077
		2078	=head3 cf::object
		2079
		2080	=cut
		2081
		2082	package cf::object;
760		2083
761	=over 4	2084	=over 4
762		2085
763	=item cf::player::exists $login	2086	=item $ob->inv_recursive
764		2087
765	Returns true when the given account exists.	2088	Returns the inventory of the object _and_ their inventories, recursively.
766		2089
767	=cut	2090	=cut
768		2091
769	sub cf::player::exists($) {	2092	sub inv_recursive_;
770	cf::player::find $_[0]	2093	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2094	map { $_, inv_recursive_ $_->inv } @_
772	}	2095	}
773		2096
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	2097	sub inv_recursive {
775		2098	inv_recursive_ inv $_[0]
776	Sends an ext reply to the player.
777
778	=cut
779
780	sub cf::player::ext_reply($$$%) {
781	my ($self, $id, %msg) = @_;
782
783	$msg{msgid} = $id;
784
785	$self->send ("ext " . to_json \%msg);
786	}	2099	}
		2100
		2101	package cf;
787		2102
788	=back	2103	=back
789		2104
790	=head3 cf::object::player	2105	=head3 cf::object::player
791		2106
…		…
807		2122
808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2123	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
809		2124
810	if ($self->{record_replies}) {	2125	if ($self->{record_replies}) {
811	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2126	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2127
812	} else {	2128	} else {
		2129	my $pl = $self->contr;
		2130
		2131	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2132	my $diag = $pl->{npc_dialog};
		2133	$diag->{pl}->ext_reply (
		2134	$diag->{id},
		2135	msgtype => "reply",
		2136	msg => $diag->{pl}->expand_cfpod ($msg),
		2137	add_topics => []
		2138	);
		2139
		2140	} else {
813	$msg = $npc->name . " says: $msg" if $npc;	2141	$msg = $npc->name . " says: $msg" if $npc;
814	$self->message ($msg, $flags);	2142	$self->message ($msg, $flags);
		2143	}
815	}	2144	}
816	}	2145	}
817		2146
818	=item $player_object->may ("access")	2147	=item $player_object->may ("access")
819		2148
…		…
829	(ref $cf::CFG{"may_$access"}	2158	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2159	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	2160	: $cf::CFG{"may_$access"})
832	}	2161	}
833		2162
		2163	=item $player_object->enter_link
		2164
		2165	Freezes the player and moves him/her to a special map (C<{link}>).
		2166
		2167	The player should be reasonably safe there for short amounts of time. You
		2168	I<MUST> call C<leave_link> as soon as possible, though.
		2169
		2170	Will never block.
		2171
		2172	=item $player_object->leave_link ($map, $x, $y)
		2173
		2174	Moves the player out of the special C<{link}> map onto the specified
		2175	map. If the map is not valid (or omitted), the player will be moved back
		2176	to the location he/she was before the call to C<enter_link>, or, if that
		2177	fails, to the emergency map position.
		2178
		2179	Might block.
		2180
		2181	=cut
		2182
		2183	sub link_map {
		2184	unless ($LINK_MAP) {
		2185	$LINK_MAP = cf::map::find "{link}"
		2186	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2187	$LINK_MAP->load;
		2188	}
		2189
		2190	$LINK_MAP
		2191	}
		2192
		2193	sub cf::object::player::enter_link {
		2194	my ($self) = @_;
		2195
		2196	$self->deactivate_recursive;
		2197
		2198	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2199
		2200	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2201	if $self->map && $self->map->{path} ne "{link}";
		2202
		2203	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2204	}
		2205
		2206	sub cf::object::player::leave_link {
		2207	my ($self, $map, $x, $y) = @_;
		2208
		2209	return unless $self->contr->active;
		2210
		2211	my $link_pos = delete $self->{_link_pos};
		2212
		2213	unless ($map) {
		2214	# restore original map position
		2215	($map, $x, $y) = @{ $link_pos || [] };
		2216	$map = cf::map::find $map;
		2217
		2218	unless ($map) {
		2219	($map, $x, $y) = @$EMERGENCY_POSITION;
		2220	$map = cf::map::find $map
		2221	or die "FATAL: cannot load emergency map\n";
		2222	}
		2223	}
		2224
		2225	($x, $y) = (-1, -1)
		2226	unless (defined $x) && (defined $y);
		2227
		2228	# use -1 or undef as default coordinates, not 0, 0
		2229	($x, $y) = ($map->enter_x, $map->enter_y)
		2230	if $x <=0 && $y <= 0;
		2231
		2232	$map->load;
		2233	$map->load_diag;
		2234
		2235	return unless $self->contr->active;
		2236	$self->activate_recursive;
		2237
		2238	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2239	$self->enter_map ($map, $x, $y);
		2240	}
		2241
		2242	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2243
		2244	Moves the player to the given map-path and coordinates by first freezing
		2245	her, loading and preparing them map, calling the provided $check callback
		2246	that has to return the map if sucecssful, and then unfreezes the player on
		2247	the new (success) or old (failed) map position.
		2248
		2249	=cut
		2250
		2251	our $GOTOGEN;
		2252
		2253	sub cf::object::player::goto {
		2254	my ($self, $path, $x, $y, $check) = @_;
		2255
		2256	# do generation counting so two concurrent goto's will be executed in-order
		2257	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2258
		2259	$self->enter_link;
		2260
		2261	(async {
		2262	my $map = eval {
		2263	my $map = cf::map::find $path;
		2264
		2265	if ($map) {
		2266	$map = $map->customise_for ($self);
		2267	$map = $check->($map) if $check && $map;
		2268	} else {
		2269	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2270	}
		2271
		2272	$map
		2273	};
		2274
		2275	if ($@) {
		2276	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2277	LOG llevError | logBacktrace, Carp::longmess $@;
		2278	}
		2279
		2280	if ($gen == $self->{_goto_generation}) {
		2281	delete $self->{_goto_generation};
		2282	$self->leave_link ($map, $x, $y);
		2283	}
		2284	})->prio (1);
		2285	}
		2286
		2287	=item $player_object->enter_exit ($exit_object)
		2288
		2289	=cut
		2290
		2291	sub parse_random_map_params {
		2292	my ($spec) = @_;
		2293
		2294	my $rmp = { # defaults
		2295	xsize => (cf::rndm 15, 40),
		2296	ysize => (cf::rndm 15, 40),
		2297	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2298	#layout => string,
		2299	};
		2300
		2301	for (split /\n/, $spec) {
		2302	my ($k, $v) = split /\s+/, $_, 2;
		2303
		2304	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2305	}
		2306
		2307	$rmp
		2308	}
		2309
		2310	sub prepare_random_map {
		2311	my ($exit) = @_;
		2312
		2313	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2314
		2315	# all this does is basically replace the /! path by
		2316	# a new random map path (?random/...) with a seed
		2317	# that depends on the exit object
		2318
		2319	my $rmp = parse_random_map_params $exit->msg;
		2320
		2321	if ($exit->map) {
		2322	$rmp->{region} = $exit->region->name;
		2323	$rmp->{origin_map} = $exit->map->path;
		2324	$rmp->{origin_x} = $exit->x;
		2325	$rmp->{origin_y} = $exit->y;
		2326	}
		2327
		2328	$rmp->{random_seed} ||= $exit->random_seed;
		2329
		2330	my $data = cf::to_json $rmp;
		2331	my $md5 = Digest::MD5::md5_hex $data;
		2332	my $meta = "$RANDOMDIR/$md5.meta";
		2333
		2334	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2335	aio_write $fh, 0, (length $data), $data, 0;
		2336	undef $fh;
		2337	aio_rename "$meta~", $meta;
		2338
		2339	$exit->slaying ("?random/$md5");
		2340	$exit->msg (undef);
		2341	}
		2342	}
		2343
		2344	sub cf::object::player::enter_exit {
		2345	my ($self, $exit) = @_;
		2346
		2347	return unless $self->type == cf::PLAYER;
		2348
		2349	if ($exit->slaying eq "/!") {
		2350	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2351	# the problem is that $exit might not survive long enough
		2352	# so it needs to be done right now, right here
		2353	cf::sync_job { prepare_random_map $exit };
		2354	}
		2355
		2356	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2357	my $hp = $exit->stats->hp;
		2358	my $sp = $exit->stats->sp;
		2359
		2360	$self->enter_link;
		2361
		2362	# if exit is damned, update players death & WoR home-position
		2363	$self->contr->savebed ($slaying, $hp, $sp)
		2364	if $exit->flag (FLAG_DAMNED);
		2365
		2366	(async {
		2367	$self->deactivate_recursive; # just to be sure
		2368	unless (eval {
		2369	$self->goto ($slaying, $hp, $sp);
		2370
		2371	1;
		2372	}) {
		2373	$self->message ("Something went wrong deep within the crossfire server. "
		2374	. "I'll try to bring you back to the map you were before. "
		2375	. "Please report this to the dungeon master!",
		2376	cf::NDI_UNIQUE | cf::NDI_RED);
		2377
		2378	warn "ERROR in enter_exit: $@";
		2379	$self->leave_link;
		2380	}
		2381	})->prio (1);
		2382	}
		2383
834	=head3 cf::client	2384	=head3 cf::client
835		2385
836	=over 4	2386	=over 4
837		2387
838	=item $client->send_drawinfo ($text, $flags)	2388	=item $client->send_drawinfo ($text, $flags)
…		…
844		2394
845	sub cf::client::send_drawinfo {	2395	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	2396	my ($self, $text, $flags) = @_;
847		2397
848	utf8::encode $text;	2398	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2399	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	2400	}
851		2401
		2402	=item $client->send_msg ($color, $type, $msg, [extra...])
		2403
		2404	Send a drawinfo or msg packet to the client, formatting the msg for the
		2405	client if neccessary. C<$type> should be a string identifying the type of
		2406	the message, with C<log> being the default. If C<$color> is negative, suppress
		2407	the message unless the client supports the msg packet.
		2408
		2409	=cut
		2410
		2411	sub cf::client::send_msg {
		2412	my ($self, $color, $type, $msg, @extra) = @_;
		2413
		2414	$msg = $self->pl->expand_cfpod ($msg);
		2415
		2416	return unless @extra || length $msg;
		2417
		2418	if ($self->can_msg) {
		2419	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2420	} else {
		2421	# replace some tags by gcfclient-compatible ones
		2422	for ($msg) {
		2423	1 while
		2424	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2425	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2426	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2427	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2428	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2429	}
		2430
		2431	if ($color >= 0) {
		2432	if (0 && $msg =~ /\[/) {
		2433	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2434	} else {
		2435	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2436	$self->send_packet ("drawinfo $color $msg")
		2437	}
		2438	}
		2439	}
		2440	}
		2441
		2442	=item $client->ext_event ($type, %msg)
		2443
		2444	Sends an ext event to the client.
		2445
		2446	=cut
		2447
		2448	sub cf::client::ext_event($$%) {
		2449	my ($self, $type, %msg) = @_;
		2450
		2451	$msg{msgtype} = "event_$type";
		2452	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
		2453	}
852		2454
853	=item $success = $client->query ($flags, "text", \&cb)	2455	=item $success = $client->query ($flags, "text", \&cb)
854		2456
855	Queues a query to the client, calling the given callback with	2457	Queues a query to the client, calling the given callback with
856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2458	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
857	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2459	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
858		2460
859	Queries can fail, so check the return code. Or don't, as queries will become	2461	Queries can fail, so check the return code. Or don't, as queries will
860	reliable at some point in the future.	2462	become reliable at some point in the future.
861		2463
862	=cut	2464	=cut
863		2465
864	sub cf::client::query {	2466	sub cf::client::query {
865	my ($self, $flags, $text, $cb) = @_;	2467	my ($self, $flags, $text, $cb) = @_;
…		…
873	utf8::encode $text;	2475	utf8::encode $text;
874	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2476	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
875		2477
876	$self->send_packet ($self->{query_queue}[0][0])	2478	$self->send_packet ($self->{query_queue}[0][0])
877	if @{ $self->{query_queue} } == 1;	2479	if @{ $self->{query_queue} } == 1;
		2480
		2481	1
878	}	2482	}
879		2483
880	cf::client->attach (	2484	cf::client->attach (
		2485	on_connect => sub {
		2486	my ($ns) = @_;
		2487
		2488	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2489	},
881	on_reply => sub {	2490	on_reply => sub {
882	my ($ns, $msg) = @_;	2491	my ($ns, $msg) = @_;
883		2492
884	# this weird shuffling is so that direct followup queries	2493	# this weird shuffling is so that direct followup queries
885	# get handled first	2494	# get handled first
886	my $queue = delete $ns->{query_queue};	2495	my $queue = delete $ns->{query_queue}
		2496	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		2497
888	(shift @$queue)->[1]->($msg);	2498	(shift @$queue)->[1]->($msg);
		2499	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		2500
890	push @{ $ns->{query_queue} }, @$queue;	2501	push @{ $ns->{query_queue} }, @$queue;
891		2502
892	if (@{ $ns->{query_queue} } == @$queue) {	2503	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	2504	if (@$queue) {
…		…
895	} else {	2506	} else {
896	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2507	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
897	}	2508	}
898	}	2509	}
899	},	2510	},
		2511	on_exticmd => sub {
		2512	my ($ns, $buf) = @_;
		2513
		2514	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2515
		2516	if (ref $msg) {
		2517	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2518	if (my %reply = $cb->($ns, $msg)) {
		2519	$reply{msgid} = $msg->{msgid};
		2520	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2521	}
		2522	}
		2523	} else {
		2524	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2525	}
		2526
		2527	cf::override;
		2528	},
900	);	2529	);
901		2530
902	=item $client->coro (\&cb)	2531	=item $client->async (\&cb)
903		2532
904	Create a new coroutine, running the specified callback. The coroutine will	2533	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	2534	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	2535	or loss of connection).
907		2536
908	=cut	2537	=cut
909		2538
910	sub cf::client::coro {	2539	sub cf::client::async {
911	my ($self, $cb) = @_;	2540	my ($self, $cb) = @_;
912		2541
913	my $coro; $coro = async {	2542	my $coro = &Coro::async ($cb);
914	eval {	2543
915	$cb->();	2544	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	2545	delete $self->{_coro}{$coro+0};
919	};	2546	});
920		2547
921	$self->{_coro}{$coro+0} = $coro;	2548	$self->{_coro}{$coro+0} = $coro;
		2549
		2550	$coro
922	}	2551	}
923		2552
924	cf::client->attach (	2553	cf::client->attach (
925	on_destroy => sub {	2554	on_destroy => sub {
926	my ($ns) = @_;	2555	my ($ns) = @_;
…		…
951		2580
952	# here we export the classes and methods available to script code	2581	# here we export the classes and methods available to script code
953		2582
954	=pod	2583	=pod
955		2584
956	The following fucntions and emthods are available within a safe environment:	2585	The following functions and methods are available within a safe environment:
957		2586
958	cf::object contr pay_amount pay_player map	2587	cf::object contr pay_amount pay_player map
959	cf::object::player player	2588	cf::object::player player
960	cf::player peaceful	2589	cf::player peaceful
961	cf::map trigger	2590	cf::map trigger
…		…
1042	=back	2671	=back
1043		2672
1044	=cut	2673	=cut
1045		2674
1046	#############################################################################	2675	#############################################################################
		2676	# the server's init and main functions
1047		2677
1048	=head2 EXTENSION DATABASE SUPPORT	2678	sub load_facedata($) {
		2679	my ($path) = @_;
1049		2680
1050	Crossfire maintains a very simple database for extension use. It can	2681	warn "loading facedata from $path\n";
1051	currently store anything that can be serialised using Storable, which
1052	excludes objects.
1053		2682
1054	The parameter C<$family> should best start with the name of the extension	2683	my $facedata;
1055	using it, it should be unique.	2684	0 < aio_load $path, $facedata
		2685	or die "$path: $!";
1056		2686
1057	=over 4	2687	$facedata = Coro::Storable::thaw $facedata;
1058		2688
1059	=item $hashref = cf::db_get $family	2689	$facedata->{version} == 2
		2690	or cf::cleanup "$path: version mismatch, cannot proceed.";
1060		2691
1061	Return a hashref for use by the extension C<$family>, which can be
1062	modified. After modifications, you have to call C<cf::db_dirty> or
1063	C<cf::db_sync>.
1064
1065	=item $value = cf::db_get $family => $key
1066
1067	Returns a single value from the database
1068
1069	=item cf::db_put $family => $hashref
1070
1071	Stores the given family hashref into the database. Updates are delayed, if
1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1073
1074	=item cf::db_put $family => $key => $value
1075
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you
1077	want the data to be synced to disk immediately, use C<cf::db_sync>.
1078
1079	=item cf::db_dirty
1080
1081	Marks the database as dirty, to be updated at a later time.
1082
1083	=item cf::db_sync
1084
1085	Immediately write the database to disk I<if it is dirty>.
1086
1087	=cut
1088
1089	our $DB;
1090
1091	{
1092	my $path = cf::localdir . "/database.pst";
1093
1094	sub db_load() {
1095	warn "loading database $path\n";#d# remove later
1096	$DB = stat $path ? Storable::retrieve $path : { };
1097	}	2692	{
		2693	my $faces = $facedata->{faceinfo};
1098		2694
1099	my $pid;	2695	while (my ($face, $info) = each %$faces) {
1100		2696	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1101	sub db_save() {	2697	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
1102	warn "saving database $path\n";#d# remove later	2698	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
1103	waitpid $pid, 0 if $pid;	2699	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1104	if (0 == ($pid = fork)) {	2700	Coro::cede;
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}
1110	}
1111
1112	my $dirty;
1113
1114	sub db_sync() {
1115	db_save if $dirty;
1116	undef $dirty;
1117	}
1118
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;
1121	});
1122
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {
1129	@_ >= 2
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133
1134	sub db_put($$;$) {
1135	if (@_ >= 3) {
1136	$DB->{$_[0]}{$_[1]} = $_[2];
1137	} else {
1138	$DB->{$_[0]} = $_[1];
1139	}
1140	db_dirty;
1141	}
1142
1143	cf::global->attach (
1144	prio => 10000,
1145	on_cleanup => sub {
1146	db_sync;
1147	},	2701	}
1148	);
1149	}
1150		2702
1151	#############################################################################	2703	while (my ($face, $info) = each %$faces) {
1152	# the server's main()	2704	next unless $info->{smooth};
		2705	my $idx = cf::face::find $face
		2706	or next;
		2707	if (my $smooth = cf::face::find $info->{smooth}) {
		2708	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2709	} else {
		2710	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2711	}
		2712	Coro::cede;
		2713	}
		2714	}
		2715
		2716	{
		2717	my $anims = $facedata->{animinfo};
		2718
		2719	while (my ($anim, $info) = each %$anims) {
		2720	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2721	Coro::cede;
		2722	}
		2723
		2724	cf::anim::invalidate_all; # d'oh
		2725	}
		2726
		2727	1
		2728	}
		2729
		2730	sub reload_regions {
		2731	load_resource_file "$MAPDIR/regions"
		2732	or die "unable to load regions file\n";
		2733	}
		2734
		2735	sub reload_facedata {
		2736	load_facedata "$DATADIR/facedata"
		2737	or die "unable to load facedata\n";
		2738	}
		2739
		2740	sub reload_archetypes {
		2741	load_resource_file "$DATADIR/archetypes"
		2742	or die "unable to load archetypes\n";
		2743	#d# NEED to laod twice to resolve forward references
		2744	# this really needs to be done in an extra post-pass
		2745	# (which needs to be synchronous, so solve it differently)
		2746	load_resource_file "$DATADIR/archetypes"
		2747	or die "unable to load archetypes\n";
		2748	}
		2749
		2750	sub reload_treasures {
		2751	load_resource_file "$DATADIR/treasures"
		2752	or die "unable to load treasurelists\n";
		2753	}
		2754
		2755	sub reload_resources {
		2756	warn "reloading resource files...\n";
		2757
		2758	reload_regions;
		2759	reload_facedata;
		2760	#reload_archetypes;#d#
		2761	reload_archetypes;
		2762	reload_treasures;
		2763
		2764	warn "finished reloading resource files\n";
		2765	}
		2766
		2767	sub init {
		2768	reload_resources;
		2769	}
1153		2770
1154	sub cfg_load {	2771	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2772	open my $fh, "<:utf8", "$CONFDIR/config"
1156	or return;	2773	or return;
1157		2774
1158	local $/;	2775	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2776	*CFG = YAML::Syck::Load <$fh>;
		2777
		2778	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2779
		2780	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2781	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2782
		2783	if (exists $CFG{mlockall}) {
		2784	eval {
		2785	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2786	and die "WARNING: m(un)lockall failed: $!\n";
		2787	};
		2788	warn $@ if $@;
		2789	}
1160	}	2790	}
1161		2791
1162	sub main {	2792	sub main {
		2793	# we must not ever block the main coroutine
		2794	local $Coro::idle = sub {
		2795	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2796	(async {
		2797	Event::one_event;
		2798	})->prio (Coro::PRIO_MAX);
		2799	};
		2800
1163	cfg_load;	2801	cfg_load;
1164	db_load;	2802	db_init;
1165	load_extensions;	2803	load_extensions;
		2804
		2805	$TICK_WATCHER->start;
1166	Event::loop;	2806	Event::loop;
1167	}	2807	}
1168		2808
1169	#############################################################################	2809	#############################################################################
1170	# initialisation	2810	# initialisation and cleanup
1171		2811
1172	sub _perl_reload(&) {	2812	# install some emergency cleanup handlers
		2813	BEGIN {
		2814	for my $signal (qw(INT HUP TERM)) {
		2815	Event->signal (
		2816	reentrant => 0,
		2817	data => WF_AUTOCANCEL,
		2818	signal => $signal,
		2819	prio => 0,
		2820	cb => sub {
		2821	cf::cleanup "SIG$signal";
		2822	},
		2823	);
		2824	}
		2825	}
		2826
		2827	sub write_runtime {
		2828	my $runtime = "$LOCALDIR/runtime";
		2829
		2830	# first touch the runtime file to show we are still running:
		2831	# the fsync below can take a very very long time.
		2832
		2833	IO::AIO::aio_utime $runtime, undef, undef;
		2834
		2835	my $guard = cf::lock_acquire "write_runtime";
		2836
		2837	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2838	or return;
		2839
		2840	my $value = $cf::RUNTIME + 90 + 10;
		2841	# 10 is the runtime save interval, for a monotonic clock
		2842	# 60 allows for the watchdog to kill the server.
		2843
		2844	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2845	and return;
		2846
		2847	# always fsync - this file is important
		2848	aio_fsync $fh
		2849	and return;
		2850
		2851	# touch it again to show we are up-to-date
		2852	aio_utime $fh, undef, undef;
		2853
		2854	close $fh
		2855	or return;
		2856
		2857	aio_rename "$runtime~", $runtime
		2858	and return;
		2859
		2860	warn "runtime file written.\n";
		2861
		2862	1
		2863	}
		2864
		2865	sub emergency_save() {
		2866	my $freeze_guard = cf::freeze_mainloop;
		2867
		2868	warn "enter emergency perl save\n";
		2869
		2870	cf::sync_job {
		2871	# use a peculiar iteration method to avoid tripping on perl
		2872	# refcount bugs in for. also avoids problems with players
		2873	# and maps saved/destroyed asynchronously.
		2874	warn "begin emergency player save\n";
		2875	for my $login (keys %cf::PLAYER) {
		2876	my $pl = $cf::PLAYER{$login} or next;
		2877	$pl->valid or next;
		2878	$pl->save;
		2879	}
		2880	warn "end emergency player save\n";
		2881
		2882	warn "begin emergency map save\n";
		2883	for my $path (keys %cf::MAP) {
		2884	my $map = $cf::MAP{$path} or next;
		2885	$map->valid or next;
		2886	$map->save;
		2887	}
		2888	warn "end emergency map save\n";
		2889
		2890	warn "begin emergency database checkpoint\n";
		2891	BDB::db_env_txn_checkpoint $DB_ENV;
		2892	warn "end emergency database checkpoint\n";
		2893	};
		2894
		2895	warn "leave emergency perl save\n";
		2896	}
		2897
		2898	sub post_cleanup {
1173	my ($msg) = @_;	2899	my ($make_core) = @_;
1174		2900
1175	$msg->("reloading...");	2901	warn Carp::longmess "post_cleanup backtrace"
		2902	if $make_core;
		2903	}
1176		2904
1177	eval {	2905	sub do_reload_perl() {
1178	# cancel all watchers	2906	# can/must only be called in main
		2907	if ($Coro::current != $Coro::main) {
		2908	warn "can only reload from main coroutine";
		2909	return;
		2910	}
		2911
		2912	warn "reloading...";
		2913
		2914	warn "entering sync_job";
		2915
		2916	cf::sync_job {
		2917	cf::write_runtime; # external watchdog should not bark
		2918	cf::emergency_save;
		2919	cf::write_runtime; # external watchdog should not bark
		2920
		2921	warn "syncing database to disk";
		2922	BDB::db_env_txn_checkpoint $DB_ENV;
		2923
		2924	# if anything goes wrong in here, we should simply crash as we already saved
		2925
		2926	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2927	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2928	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2929	}
1182		2930
1183	# unload all extensions	2931	warn "flushing outstanding aio requests";
1184	for (@exts) {	2932	for (;;) {
1185	$msg->("unloading <$_>");	2933	BDB::flush;
1186	unload_extension $_;	2934	IO::AIO::flush;
		2935	Coro::cede;
		2936	last unless IO::AIO::nreqs || BDB::nreqs;
		2937	warn "iterate...";
		2938	}
		2939
		2940	++$RELOAD;
		2941
		2942	warn "cancelling all extension coros";
		2943	$_->cancel for values %EXT_CORO;
		2944	%EXT_CORO = ();
		2945
		2946	warn "removing commands";
		2947	%COMMAND = ();
		2948
		2949	warn "removing ext/exti commands";
		2950	%EXTCMD = ();
		2951	%EXTICMD = ();
		2952
		2953	warn "unloading/nuking all extensions";
		2954	for my $pkg (@EXTS) {
		2955	warn "... unloading $pkg";
		2956
		2957	if (my $cb = $pkg->can ("unload")) {
		2958	eval {
		2959	$cb->($pkg);
		2960	1
		2961	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2962	}
1188		2963
		2964	warn "... nuking $pkg";
		2965	Symbol::delete_package $pkg;
		2966	}
		2967
1189	# unload all modules loaded from $LIBDIR	2968	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2969	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2970	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2971
1193	$msg->("removing <$k>");	2972	warn "... unloading $k";
1194	delete $INC{$k};	2973	delete $INC{$k};
1195		2974
1196	$k =~ s/\.pm$//;	2975	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2976	$k =~ s/\//::/g;
1198		2977
…		…
1201	}	2980	}
1202		2981
1203	Symbol::delete_package $k;	2982	Symbol::delete_package $k;
1204	}	2983	}
1205		2984
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2985	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2986	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2987	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2988
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2989	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2990	delete $INC{"cf.pm"};
		2991	delete $INC{"cf/pod.pm"};
1218		2992
1219	# don't, removes xs symbols, too,	2993	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2994	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2995	#Symbol::delete_package __PACKAGE__;
1222		2996
1223	# reload cf.pm	2997	warn "unload completed, starting to reload now";
		2998
1224	$msg->("reloading cf.pm");	2999	warn "reloading cf.pm";
1225	require cf;	3000	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3001	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		3002
1228	# load config and database again	3003	warn "loading config and database again";
1229	cf::cfg_load;	3004	cf::cfg_load;
1230	cf::db_load;
1231		3005
1232	# load extensions	3006	warn "loading extensions";
1233	$msg->("load extensions");
1234	cf::load_extensions;	3007	cf::load_extensions;
1235		3008
1236	# reattach attachments to objects	3009	warn "reattaching attachments to objects/players";
1237	$msg->("reattach");	3010	_global_reattach; # objects, sockets
1238	_global_reattach;	3011	warn "reattaching attachments to maps";
		3012	reattach $_ for values %MAP;
		3013	warn "reattaching attachments to players";
		3014	reattach $_ for values %PLAYER;
		3015
		3016	warn "leaving sync_job";
		3017
		3018	1
		3019	} or do {
		3020	warn $@;
		3021	warn "error while reloading, exiting.";
		3022	exit 1;
1239	};	3023	};
1240	$msg->($@) if $@;
1241		3024
1242	$msg->("reloaded");	3025	warn "reloaded";
1243	};	3026	};
1244		3027
1245	sub perl_reload() {	3028	our $RELOAD_WATCHER; # used only during reload
1246	_perl_reload {	3029
1247	warn $_[0];	3030	sub reload_perl() {
1248	print "$_[0]\n";	3031	# doing reload synchronously and two reloads happen back-to-back,
		3032	# coro crashes during coro_state_free->destroy here.
		3033
		3034	$RELOAD_WATCHER ||= Event->timer (
		3035	reentrant => 0,
		3036	after => 0,
		3037	data => WF_AUTOCANCEL,
		3038	cb => sub {
		3039	do_reload_perl;
		3040	undef $RELOAD_WATCHER;
		3041	},
1249	};	3042	);
1250	}	3043	}
1251		3044
1252	register "<global>", __PACKAGE__;
1253
1254	register_command "perl-reload" => sub {	3045	register_command "reload" => sub {
1255	my ($who, $arg) = @_;	3046	my ($who, $arg) = @_;
1256		3047
1257	if ($who->flag (FLAG_WIZ)) {	3048	if ($who->flag (FLAG_WIZ)) {
1258	_perl_reload {	3049	$who->message ("reloading server.");
1259	warn $_[0];	3050	async { reload_perl };
1260	$who->message ($_[0]);	3051	}
		3052	};
		3053
		3054	unshift @INC, $LIBDIR;
		3055
		3056	my $bug_warning = 0;
		3057
		3058	our @WAIT_FOR_TICK;
		3059	our @WAIT_FOR_TICK_BEGIN;
		3060
		3061	sub wait_for_tick {
		3062	return unless $TICK_WATCHER->is_active;
		3063	return if $Coro::current == $Coro::main;
		3064
		3065	my $signal = new Coro::Signal;
		3066	push @WAIT_FOR_TICK, $signal;
		3067	$signal->wait;
		3068	}
		3069
		3070	sub wait_for_tick_begin {
		3071	return unless $TICK_WATCHER->is_active;
		3072	return if $Coro::current == $Coro::main;
		3073
		3074	my $signal = new Coro::Signal;
		3075	push @WAIT_FOR_TICK_BEGIN, $signal;
		3076	$signal->wait;
		3077	}
		3078
		3079	my $min = 1e6;#d#
		3080	my $avg = 10;
		3081	$TICK_WATCHER = Event->timer (
		3082	reentrant => 0,
		3083	parked => 1,
		3084	prio => 0,
		3085	at => $NEXT_TICK || $TICK,
		3086	data => WF_AUTOCANCEL,
		3087	cb => sub {
		3088	if ($Coro::current != $Coro::main) {
		3089	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3090	unless ++$bug_warning > 10;
		3091	return;
		3092	}
		3093
		3094	$NOW = $tick_start = Event::time;
		3095
		3096	cf::server_tick; # one server iteration
		3097
		3098	0 && sync_job {#d#
		3099	for(1..10) {
		3100	my $t = Event::time;
		3101	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3102	or die;
		3103
		3104	$map->width (50);
		3105	$map->height (50);
		3106	$map->alloc;
		3107	$map->_load_objects ("/tmp/x.map", 1);
		3108	my $t = Event::time - $t;
		3109
		3110	#next unless $t < 0.0013;#d#
		3111	if ($t < $min) {
		3112	$min = $t;
		3113	}
		3114	$avg = $avg * 0.99 + $t * 0.01;
		3115	}
		3116	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3117	exit 0;
		3118	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1261	};	3119	};
1262	}
1263	};
1264		3120
1265	unshift @INC, $LIBDIR;	3121	$RUNTIME += $TICK;
1266
1267	$TICK_WATCHER = Event->timer (
1268	prio => 0,
1269	at => $NEXT_TICK || 1,
1270	data => WF_AUTOCANCEL,
1271	cb => sub {
1272	cf::server_tick; # one server iteration
1273
1274	my $NOW = Event::time;
1275	$NEXT_TICK += $TICK;	3122	$NEXT_TICK += $TICK;
		3123
		3124	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3125	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3126	Coro::async_pool {
		3127	write_runtime
		3128	or warn "ERROR: unable to write runtime file: $!";
		3129	};
		3130	}
		3131
		3132	# my $AFTER = Event::time;
		3133	# warn $AFTER - $NOW;#d#
		3134
		3135	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3136	$sig->send;
		3137	}
		3138	while (my $sig = shift @WAIT_FOR_TICK) {
		3139	$sig->send;
		3140	}
		3141
		3142	$NOW = Event::time;
1276		3143
1277	# if we are delayed by four ticks or more, skip them all	3144	# if we are delayed by four ticks or more, skip them all
1278	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3145	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1279		3146
1280	$TICK_WATCHER->at ($NEXT_TICK);	3147	$TICK_WATCHER->at ($NEXT_TICK);
1281	$TICK_WATCHER->start;	3148	$TICK_WATCHER->start;
		3149
		3150	$LOAD = ($NOW - $tick_start) / $TICK;
		3151	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3152
		3153	_post_tick;
		3154
		3155
1282	},	3156	},
1283	);	3157	);
1284		3158
		3159	{
		3160	BDB::max_poll_time $TICK * 0.1;
		3161	$BDB_POLL_WATCHER = Event->io (
		3162	reentrant => 0,
		3163	fd => BDB::poll_fileno,
		3164	poll => 'r',
		3165	prio => 0,
		3166	data => WF_AUTOCANCEL,
		3167	cb => \&BDB::poll_cb,
		3168	);
		3169	BDB::min_parallel 8;
		3170
		3171	BDB::set_sync_prepare {
		3172	my $status;
		3173	my $current = $Coro::current;
		3174	(
		3175	sub {
		3176	$status = $!;
		3177	$current->ready; undef $current;
		3178	},
		3179	sub {
		3180	Coro::schedule while defined $current;
		3181	$! = $status;
		3182	},
		3183	)
		3184	};
		3185
		3186	unless ($DB_ENV) {
		3187	$DB_ENV = BDB::db_env_create;
		3188
		3189	cf::sync_job {
		3190	eval {
		3191	BDB::db_env_open
		3192	$DB_ENV,
		3193	$BDBDIR,
		3194	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3195	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3196	0666;
		3197
		3198	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3199
		3200	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3201	$DB_ENV->set_lk_detect;
		3202	};
		3203
		3204	cf::cleanup "db_env_open(db): $@" if $@;
		3205	};
		3206	}
		3207	}
		3208
		3209	{
		3210	IO::AIO::min_parallel 8;
		3211
		3212	undef $Coro::AIO::WATCHER;
1285	IO::AIO::max_poll_time $TICK * 0.2;	3213	IO::AIO::max_poll_time $TICK * 0.1;
1286		3214	$AIO_POLL_WATCHER = Event->io (
1287	Event->io (fd => IO::AIO::poll_fileno,	3215	reentrant => 0,
1288	poll => 'r',
1289	prio => 5,
1290	data => WF_AUTOCANCEL,	3216	data => WF_AUTOCANCEL,
		3217	fd => IO::AIO::poll_fileno,
		3218	poll => 'r',
		3219	prio => 6,
1291	cb => \&IO::AIO::poll_cb);	3220	cb => \&IO::AIO::poll_cb,
		3221	);
		3222	}
		3223
		3224	my $_log_backtrace;
		3225
		3226	sub _log_backtrace {
		3227	my ($msg, @addr) = @_;
		3228
		3229	$msg =~ s/\n//;
		3230
		3231	# limit the # of concurrent backtraces
		3232	if ($_log_backtrace < 2) {
		3233	++$_log_backtrace;
		3234	async {
		3235	my @bt = fork_call {
		3236	@addr = map { sprintf "%x", $_ } @addr;
		3237	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3238	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3239	or die "addr2line: $!";
		3240
		3241	my @funcs;
		3242	my @res = <$fh>;
		3243	chomp for @res;
		3244	while (@res) {
		3245	my ($func, $line) = splice @res, 0, 2, ();
		3246	push @funcs, "[$func] $line";
		3247	}
		3248
		3249	@funcs
		3250	};
		3251
		3252	LOG llevInfo, "[ABT] $msg\n";
		3253	LOG llevInfo, "[ABT] $_\n" for @bt;
		3254	--$_log_backtrace;
		3255	};
		3256	} else {
		3257	LOG llevInfo, "[ABT] $msg\n";
		3258	LOG llevInfo, "[ABT] [suppressed]\n";
		3259	}
		3260	}
		3261
		3262	# load additional modules
		3263	use cf::pod;
		3264
		3265	END { cf::emergency_save }
1292		3266
1293	1	3267	1
1294		3268

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