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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.100 by root, Mon Dec 25 11:25:49 2006 UTC vs.
Revision 1.288 by root, Mon Jun 25 07:40:53 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->convert_blessed->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) = @_;
…		…
614		1090
615	my $msg = eval { from_json $buf };	1091	my $msg = eval { from_json $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<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g;
		1406
		1407	# create single paragraphs (very hackish)
		1408	s/(?<=\S)\n(?=\w)/ /g;
		1409
		1410	$_
		1411	}
		1412
		1413	=item $player->ext_reply ($msgid, %msg)
		1414
		1415	Sends an ext reply to the player.
		1416
		1417	=cut
		1418
		1419	sub ext_reply($$%) {
		1420	my ($self, $id, %msg) = @_;
		1421
		1422	$msg{msgid} = $id;
		1423	$self->send ("ext " . cf::to_json \%msg);
		1424	}
		1425
		1426	=item $player->ext_event ($type, %msg)
		1427
		1428	Sends an ext event to the client.
		1429
		1430	=cut
		1431
		1432	sub ext_event($$%) {
		1433	my ($self, $type, %msg) = @_;
		1434
		1435	$self->ns->ext_event ($type, %msg);
		1436	}
		1437
		1438	=head3 cf::region
		1439
		1440	=over 4
		1441
		1442	=cut
		1443
		1444	package cf::region;
		1445
		1446	=item cf::region::find_by_path $path
		1447
		1448	Tries to decuce the likely region for a map knowing only its path.
		1449
		1450	=cut
		1451
		1452	sub find_by_path($) {
		1453	my ($path) = @_;
		1454
		1455	my ($match, $specificity);
		1456
		1457	for my $region (list) {
		1458	if ($region->match && $path =~ $region->match) {
		1459	($match, $specificity) = ($region, $region->specificity)
		1460	if $region->specificity > $specificity;
		1461	}
		1462	}
		1463
		1464	$match
		1465	}
		1466
		1467	=back
		1468
		1469	=head3 cf::map
		1470
		1471	=over 4
		1472
		1473	=cut
		1474
		1475	package cf::map;
		1476
		1477	use Fcntl;
		1478	use Coro::AIO;
		1479
		1480	use overload
		1481	'""' => \&as_string,
		1482	fallback => 1;
		1483
		1484	our $MAX_RESET = 3600;
		1485	our $DEFAULT_RESET = 3000;
		1486
		1487	sub generate_random_map {
		1488	my ($self, $rmp) = @_;
		1489	# mit "rum" bekleckern, nicht
		1490	$self->_create_random_map (
		1491	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1492	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1493	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1494	$rmp->{exit_on_final_map},
		1495	$rmp->{xsize}, $rmp->{ysize},
		1496	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1497	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1498	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1499	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1500	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1501	(cf::region::find $rmp->{region}), $rmp->{custom}
		1502	)
		1503	}
		1504
		1505	=item cf::map->register ($regex, $prio)
		1506
		1507	Register a handler for the map path matching the given regex at the
		1508	givne priority (higher is better, built-in handlers have priority 0, the
		1509	default).
		1510
		1511	=cut
		1512
631	sub register {	1513	sub register {
		1514	my (undef, $regex, $prio) = @_;
		1515	my $pkg = caller;
		1516
		1517	no strict;
		1518	push @{"$pkg\::ISA"}, __PACKAGE__;
		1519
		1520	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1521	}
		1522
		1523	# also paths starting with '/'
		1524	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1525
		1526	sub thawer_merge {
632	my ($base, $pkg) = @_;	1527	my ($self, $merge) = @_;
633		1528
634	#TODO	1529	# we have to keep some variables in memory intact
635	}	1530	local $self->{path};
		1531	local $self->{load_path};
636		1532
637	sub load_extension {	1533	$self->SUPER::thawer_merge ($merge);
		1534	}
		1535
		1536	sub normalise {
638	my ($path) = @_;	1537	my ($path, $base) = @_;
639		1538
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1539	$path = "$path"; # make sure its a string
641	my $base = $1;
642	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";
645		1540
646	warn "loading '$path' into '$pkg'\n";	1541	$path =~ s/\.map$//;
647		1542
648	open my $fh, "<:utf8", $path	1543	# map plan:
649	or die "$path: $!";	1544	#
		1545	# /! non-realised random map exit (special hack!)
		1546	# {... are special paths that are not being touched
		1547	# ?xxx/... are special absolute paths
		1548	# ?random/... random maps
		1549	# /... normal maps
		1550	# ~user/... per-player map of a specific user
650		1551
651	my $source =	1552	$path =~ s/$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		1553
657	eval $source	1554	# treat it as relative path if it starts with
658	or die $@ ? "$path: $@\n"	1555	# something that looks reasonable
659	: "extension disabled.\n";	1556	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1557	$base or Carp::carp "normalise called with relative path and no base: '$path'";
660		1558
661	push @exts, $pkg;	1559	$base =~ s{[^/]+/?$}{};
662	$ext_pkg{$base} = $pkg;	1560	$path = "$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]{$pkg};
679	# }	1561	}
680		1562
681	# remove commands	1563	for ($path) {
682	for my $name (keys %COMMAND) {	1564	redo if s{//}{/};
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1565	redo if s{/\.?/}{/};
		1566	redo if s{/[^/]+/\.\./}{/};
		1567	}
684		1568
685	if (@cb) {	1569	$path
686	$COMMAND{$name} = \@cb;	1570	}
		1571
		1572	sub new_from_path {
		1573	my (undef, $path, $base) = @_;
		1574
		1575	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1576
		1577	$path = normalise $path, $base;
		1578
		1579	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1580	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1581	my $self = bless cf::map::new, $pkg;
		1582	$self->{path} = $path; $self->path ($path);
		1583	$self->init; # pass $1 etc.
		1584	return $self;
		1585	}
		1586	}
		1587
		1588	Carp::carp "unable to resolve path '$path' (base '$base').";
		1589	()
		1590	}
		1591
		1592	sub init {
		1593	my ($self) = @_;
		1594
		1595	$self
		1596	}
		1597
		1598	sub as_string {
		1599	my ($self) = @_;
		1600
		1601	"$self->{path}"
		1602	}
		1603
		1604	# the displayed name, this is a one way mapping
		1605	sub visible_name {
		1606	&as_string
		1607	}
		1608
		1609	# the original (read-only) location
		1610	sub load_path {
		1611	my ($self) = @_;
		1612
		1613	"$MAPDIR/$self->{path}.map"
		1614	}
		1615
		1616	# the temporary/swap location
		1617	sub save_path {
		1618	my ($self) = @_;
		1619
		1620	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1621	"$TMPDIR/$path.map"
		1622	}
		1623
		1624	# the unique path, undef == no special unique path
		1625	sub uniq_path {
		1626	my ($self) = @_;
		1627
		1628	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1629	"$UNIQUEDIR/$path"
		1630	}
		1631
		1632	# and all this just because we cannot iterate over
		1633	# all maps in C++...
		1634	sub change_all_map_light {
		1635	my ($change) = @_;
		1636
		1637	$_->change_map_light ($change)
		1638	for grep $_->outdoor, values %cf::MAP;
		1639	}
		1640
		1641	sub decay_objects {
		1642	my ($self) = @_;
		1643
		1644	return if $self->{deny_reset};
		1645
		1646	$self->do_decay_objects;
		1647	}
		1648
		1649	sub unlink_save {
		1650	my ($self) = @_;
		1651
		1652	utf8::encode (my $save = $self->save_path);
		1653	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1654	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1655	}
		1656
		1657	sub load_header_from($) {
		1658	my ($self, $path) = @_;
		1659
		1660	utf8::encode $path;
		1661	#aio_open $path, O_RDONLY, 0
		1662	# or return;
		1663
		1664	$self->_load_header ($path)
		1665	or return;
		1666
		1667	$self->{load_path} = $path;
		1668
		1669	1
		1670	}
		1671
		1672	sub load_header_orig {
		1673	my ($self) = @_;
		1674
		1675	$self->load_header_from ($self->load_path)
		1676	}
		1677
		1678	sub load_header_temp {
		1679	my ($self) = @_;
		1680
		1681	$self->load_header_from ($self->save_path)
		1682	}
		1683
		1684	sub prepare_temp {
		1685	my ($self) = @_;
		1686
		1687	$self->last_access ((delete $self->{last_access})
		1688	|| $cf::RUNTIME); #d#
		1689	# safety
		1690	$self->{instantiate_time} = $cf::RUNTIME
		1691	if $self->{instantiate_time} > $cf::RUNTIME;
		1692	}
		1693
		1694	sub prepare_orig {
		1695	my ($self) = @_;
		1696
		1697	$self->{load_original} = 1;
		1698	$self->{instantiate_time} = $cf::RUNTIME;
		1699	$self->last_access ($cf::RUNTIME);
		1700	$self->instantiate;
		1701	}
		1702
		1703	sub load_header {
		1704	my ($self) = @_;
		1705
		1706	if ($self->load_header_temp) {
		1707	$self->prepare_temp;
687	} else {	1708	} else {
688	delete $COMMAND{$name};	1709	$self->load_header_orig
689	}	1710	or return;
		1711	$self->prepare_orig;
		1712	}
		1713
		1714	$self->{deny_reset} = 1
		1715	if $self->no_reset;
		1716
		1717	$self->default_region (cf::region::find_by_path $self->{path})
		1718	unless $self->default_region;
		1719
690	}	1720	1
		1721	}
691		1722
692	# remove extcmds	1723	sub find;
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1724	sub find {
694	delete $EXTCMD{$name};	1725	my ($path, $origin) = @_;
		1726
		1727	$path = normalise $path, $origin && $origin->path;
		1728
		1729	cf::lock_wait "map_find:$path";
		1730
		1731	$cf::MAP{$path} || do {
		1732	my $guard = cf::lock_acquire "map_find:$path";
		1733	my $map = new_from_path cf::map $path
		1734	or return;
		1735
		1736	$map->{last_save} = $cf::RUNTIME;
		1737
		1738	$map->load_header
		1739	or return;
		1740
		1741	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1742	# doing this can freeze the server in a sync job, obviously
		1743	#$cf::WAIT_FOR_TICK->wait;
		1744	$map->reset;
		1745	undef $guard;
		1746	return find $path;
		1747	}
		1748
		1749	$cf::MAP{$path} = $map
		1750	}
		1751	}
		1752
		1753	sub pre_load { }
		1754	sub post_load { }
		1755
		1756	sub load {
		1757	my ($self) = @_;
		1758
		1759	local $self->{deny_reset} = 1; # loading can take a long time
		1760
		1761	my $path = $self->{path};
		1762
695	}	1763	{
		1764	my $guard = cf::lock_acquire "map_load:$path";
696		1765
697	if (my $cb = $pkg->can ("unload")) {	1766	return if $self->in_memory != cf::MAP_SWAPPED;
698	eval {	1767
699	$cb->($pkg);	1768	$self->in_memory (cf::MAP_LOADING);
		1769
		1770	$self->alloc;
		1771
		1772	$self->pre_load;
		1773	Coro::cede;
		1774
		1775	$self->_load_objects ($self->{load_path}, 1)
		1776	or return;
		1777
		1778	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1779	if delete $self->{load_original};
		1780
		1781	if (my $uniq = $self->uniq_path) {
		1782	utf8::encode $uniq;
		1783	if (aio_open $uniq, O_RDONLY, 0) {
		1784	$self->clear_unique_items;
		1785	$self->_load_objects ($uniq, 0);
700	1	1786	}
701	} or warn "$pkg unloaded, but with errors: $@";	1787	}
702	}
703		1788
704	Symbol::delete_package $pkg;	1789	Coro::cede;
705	}	1790	# now do the right thing for maps
		1791	$self->link_multipart_objects;
		1792	$self->difficulty ($self->estimate_difficulty)
		1793	unless $self->difficulty;
		1794	Coro::cede;
706		1795
707	sub load_extensions {	1796	unless ($self->{deny_activate}) {
708	for my $ext (<$LIBDIR/*.ext>) {	1797	$self->decay_objects;
709	next unless -r $ext;	1798	$self->fix_auto_apply;
710	eval {	1799	$self->update_buttons;
711	load_extension $ext;	1800	Coro::cede;
712	1	1801	$self->set_darkness_map;
713	} or warn "$ext not loaded: $@";	1802	Coro::cede;
714	}	1803	$self->activate;
715	}	1804	}
716		1805
717	#############################################################################	1806	$self->in_memory (cf::MAP_IN_MEMORY);
718	# load/save/clean perl data associated with a map	1807	}
719		1808
720	*cf::mapsupport::on_clean = sub {	1809	$self->post_load;
		1810	}
		1811
		1812	sub customise_for {
		1813	my ($self, $ob) = @_;
		1814
		1815	return find "~" . $ob->name . "/" . $self->{path}
		1816	if $self->per_player;
		1817
		1818	# return find "?party/" . $ob->name . "/" . $self->{path}
		1819	# if $self->per_party;
		1820
		1821	$self
		1822	}
		1823
		1824	# find and load all maps in the 3x3 area around a map
		1825	sub load_diag {
721	my ($map) = @_;	1826	my ($map) = @_;
722		1827
723	my $path = $map->tmpname;	1828	my @diag; # diagonal neighbours
724	defined $path or return;
725		1829
726	unlink "$path.pst";	1830	for (0 .. 3) {
727	};	1831	my $neigh = $map->tile_path ($_)
		1832	or next;
		1833	$neigh = find $neigh, $map
		1834	or next;
		1835	$neigh->load;
728		1836
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1837	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1838	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1839	}
730		1840
731	#############################################################################	1841	for (@diag) {
732	# load/save perl data associated with player->ob objects	1842	my $neigh = find @$_
733		1843	or next;
734	sub all_objects(@) {	1844	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1845	}
736	}	1846	}
737		1847
738	# TODO: compatibility cruft, remove when no longer needed	1848	sub find_sync {
739	cf::player->attach (	1849	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1850
743	for my $o (all_objects $pl->ob) {	1851	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1852	}
745	$o->set_ob_key_value ("_perl_data");
746		1853
747	%$o = %{ Storable::thaw pack "H*", $value };	1854	sub do_load_sync {
		1855	my ($map) = @_;
		1856
		1857	cf::sync_job { $map->load };
		1858	}
		1859
		1860	our %MAP_PREFETCH;
		1861	our $MAP_PREFETCHER = undef;
		1862
		1863	sub find_async {
		1864	my ($path, $origin) = @_;
		1865
		1866	$path = normalise $path, $origin && $origin->{path};
		1867
		1868	if (my $map = $cf::MAP{$path}) {
		1869	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1870	}
		1871
		1872	undef $MAP_PREFETCH{$path};
		1873	$MAP_PREFETCHER ||= cf::async {
		1874	while (%MAP_PREFETCH) {
		1875	for my $path (keys %MAP_PREFETCH) {
		1876	my $map = find $path
		1877	or next;
		1878	$map->load;
		1879
		1880	delete $MAP_PREFETCH{$path};
748	}	1881	}
749	}	1882	}
		1883	undef $MAP_PREFETCHER;
		1884	};
		1885	$MAP_PREFETCHER->prio (6);
		1886
		1887	()
		1888	}
		1889
		1890	sub save {
		1891	my ($self) = @_;
		1892
		1893	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1894
		1895	$self->{last_save} = $cf::RUNTIME;
		1896
		1897	return unless $self->dirty;
		1898
		1899	my $save = $self->save_path; utf8::encode $save;
		1900	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1901
		1902	$self->{load_path} = $save;
		1903
		1904	return if $self->{deny_save};
		1905
		1906	local $self->{last_access} = $self->last_access;#d#
		1907
		1908	cf::async {
		1909	$_->contr->save for $self->players;
		1910	};
		1911
		1912	if ($uniq) {
		1913	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1914	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1915	} else {
		1916	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
750	},	1917	}
751	);	1918	}
752		1919
753	#############################################################################	1920	sub swap_out {
		1921	my ($self) = @_;
754		1922
755	=head2 CORE EXTENSIONS	1923	# save first because save cedes
		1924	$self->save;
756		1925
757	Functions and methods that extend core crossfire objects.	1926	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1927
759	=head3 cf::player	1928	return if $self->players;
		1929	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1930	return if $self->{deny_save};
		1931
		1932	$self->clear;
		1933	$self->in_memory (cf::MAP_SWAPPED);
		1934	}
		1935
		1936	sub reset_at {
		1937	my ($self) = @_;
		1938
		1939	# TODO: safety, remove and allow resettable per-player maps
		1940	return 1e99 if $self->{deny_reset};
		1941
		1942	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1943	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1944
		1945	$time + $to
		1946	}
		1947
		1948	sub should_reset {
		1949	my ($self) = @_;
		1950
		1951	$self->reset_at <= $cf::RUNTIME
		1952	}
		1953
		1954	sub reset {
		1955	my ($self) = @_;
		1956
		1957	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1958
		1959	return if $self->players;
		1960
		1961	warn "resetting map ", $self->path;
		1962
		1963	$self->in_memory (cf::MAP_SWAPPED);
		1964
		1965	# need to save uniques path
		1966	unless ($self->{deny_save}) {
		1967	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1968
		1969	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1970	if $uniq;
		1971	}
		1972
		1973	delete $cf::MAP{$self->path};
		1974
		1975	$self->clear;
		1976
		1977	$_->clear_links_to ($self) for values %cf::MAP;
		1978
		1979	$self->unlink_save;
		1980	$self->destroy;
		1981	}
		1982
		1983	my $nuke_counter = "aaaa";
		1984
		1985	sub nuke {
		1986	my ($self) = @_;
		1987
		1988	delete $cf::MAP{$self->path};
		1989
		1990	$self->unlink_save;
		1991
		1992	bless $self, "cf::map";
		1993	delete $self->{deny_reset};
		1994	$self->{deny_save} = 1;
		1995	$self->reset_timeout (1);
		1996	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1997
		1998	$cf::MAP{$self->path} = $self;
		1999
		2000	$self->reset; # polite request, might not happen
		2001	}
		2002
		2003	=item $maps = cf::map::tmp_maps
		2004
		2005	Returns an arrayref with all map paths of currently instantiated and saved
		2006	maps. May block.
		2007
		2008	=cut
		2009
		2010	sub tmp_maps() {
		2011	[
		2012	map {
		2013	utf8::decode $_;
		2014	/\.map$/
		2015	? normalise $_
		2016	: ()
		2017	} @{ aio_readdir $TMPDIR or [] }
		2018	]
		2019	}
		2020
		2021	=item $maps = cf::map::random_maps
		2022
		2023	Returns an arrayref with all map paths of currently instantiated and saved
		2024	random maps. May block.
		2025
		2026	=cut
		2027
		2028	sub random_maps() {
		2029	[
		2030	map {
		2031	utf8::decode $_;
		2032	/\.map$/
		2033	? normalise "?random/$_"
		2034	: ()
		2035	} @{ aio_readdir $RANDOMDIR or [] }
		2036	]
		2037	}
		2038
		2039	=item cf::map::unique_maps
		2040
		2041	Returns an arrayref of paths of all shared maps that have
		2042	instantiated unique items. May block.
		2043
		2044	=cut
		2045
		2046	sub unique_maps() {
		2047	[
		2048	map {
		2049	utf8::decode $_;
		2050	/\.map$/
		2051	? normalise $_
		2052	: ()
		2053	} @{ aio_readdir $UNIQUEDIR or [] }
		2054	]
		2055	}
		2056
		2057	package cf;
		2058
		2059	=back
		2060
		2061	=head3 cf::object
		2062
		2063	=cut
		2064
		2065	package cf::object;
760		2066
761	=over 4	2067	=over 4
762		2068
763	=item cf::player::exists $login	2069	=item $ob->inv_recursive
764		2070
765	Returns true when the given account exists.	2071	Returns the inventory of the object _and_ their inventories, recursively.
766		2072
767	=cut	2073	=cut
768		2074
769	sub cf::player::exists($) {	2075	sub inv_recursive_;
770	cf::player::find $_[0]	2076	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2077	map { $_, inv_recursive_ $_->inv } @_
772	}	2078	}
773		2079
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	2080	sub inv_recursive {
775		2081	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	}	2082	}
		2083
		2084	package cf;
787		2085
788	=back	2086	=back
789		2087
790	=head3 cf::object::player	2088	=head3 cf::object::player
791		2089
…		…
807		2105
808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2106	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
809		2107
810	if ($self->{record_replies}) {	2108	if ($self->{record_replies}) {
811	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2109	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2110
812	} else {	2111	} else {
		2112	my $pl = $self->contr;
		2113
		2114	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2115	my $diag = $pl->{npc_dialog};
		2116	$diag->{pl}->ext_reply (
		2117	$diag->{id},
		2118	msgtype => "reply",
		2119	msg => $diag->{pl}->expand_cfpod ($msg),
		2120	add_topics => []
		2121	);
		2122
		2123	} else {
813	$msg = $npc->name . " says: $msg" if $npc;	2124	$msg = $npc->name . " says: $msg" if $npc;
814	$self->message ($msg, $flags);	2125	$self->message ($msg, $flags);
		2126	}
815	}	2127	}
816	}	2128	}
817		2129
818	=item $player_object->may ("access")	2130	=item $player_object->may ("access")
819		2131
…		…
829	(ref $cf::CFG{"may_$access"}	2141	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2142	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	2143	: $cf::CFG{"may_$access"})
832	}	2144	}
833		2145
		2146	=item $player_object->enter_link
		2147
		2148	Freezes the player and moves him/her to a special map (C<{link}>).
		2149
		2150	The player should be reasonably safe there for short amounts of time. You
		2151	I<MUST> call C<leave_link> as soon as possible, though.
		2152
		2153	Will never block.
		2154
		2155	=item $player_object->leave_link ($map, $x, $y)
		2156
		2157	Moves the player out of the special C<{link}> map onto the specified
		2158	map. If the map is not valid (or omitted), the player will be moved back
		2159	to the location he/she was before the call to C<enter_link>, or, if that
		2160	fails, to the emergency map position.
		2161
		2162	Might block.
		2163
		2164	=cut
		2165
		2166	sub link_map {
		2167	unless ($LINK_MAP) {
		2168	$LINK_MAP = cf::map::find "{link}"
		2169	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2170	$LINK_MAP->load;
		2171	}
		2172
		2173	$LINK_MAP
		2174	}
		2175
		2176	sub cf::object::player::enter_link {
		2177	my ($self) = @_;
		2178
		2179	$self->deactivate_recursive;
		2180
		2181	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2182
		2183	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2184	if $self->map && $self->map->{path} ne "{link}";
		2185
		2186	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2187	}
		2188
		2189	sub cf::object::player::leave_link {
		2190	my ($self, $map, $x, $y) = @_;
		2191
		2192	return unless $self->contr->active;
		2193
		2194	my $link_pos = delete $self->{_link_pos};
		2195
		2196	unless ($map) {
		2197	# restore original map position
		2198	($map, $x, $y) = @{ $link_pos || [] };
		2199	$map = cf::map::find $map;
		2200
		2201	unless ($map) {
		2202	($map, $x, $y) = @$EMERGENCY_POSITION;
		2203	$map = cf::map::find $map
		2204	or die "FATAL: cannot load emergency map\n";
		2205	}
		2206	}
		2207
		2208	($x, $y) = (-1, -1)
		2209	unless (defined $x) && (defined $y);
		2210
		2211	# use -1 or undef as default coordinates, not 0, 0
		2212	($x, $y) = ($map->enter_x, $map->enter_y)
		2213	if $x <=0 && $y <= 0;
		2214
		2215	$map->load;
		2216	$map->load_diag;
		2217
		2218	return unless $self->contr->active;
		2219	$self->activate_recursive;
		2220
		2221	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2222	$self->enter_map ($map, $x, $y);
		2223	}
		2224
		2225	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2226
		2227	Moves the player to the given map-path and coordinates by first freezing
		2228	her, loading and preparing them map, calling the provided $check callback
		2229	that has to return the map if sucecssful, and then unfreezes the player on
		2230	the new (success) or old (failed) map position.
		2231
		2232	=cut
		2233
		2234	our $GOTOGEN;
		2235
		2236	sub cf::object::player::goto {
		2237	my ($self, $path, $x, $y, $check) = @_;
		2238
		2239	# do generation counting so two concurrent goto's will be executed in-order
		2240	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2241
		2242	$self->enter_link;
		2243
		2244	(async {
		2245	my $map = eval {
		2246	my $map = cf::map::find $path;
		2247
		2248	if ($map) {
		2249	$map = $map->customise_for ($self);
		2250	$map = $check->($map) if $check && $map;
		2251	} else {
		2252	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2253	}
		2254
		2255	$map
		2256	};
		2257
		2258	if ($@) {
		2259	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2260	LOG llevError | logBacktrace, Carp::longmess $@;
		2261	}
		2262
		2263	if ($gen == $self->{_goto_generation}) {
		2264	delete $self->{_goto_generation};
		2265	$self->leave_link ($map, $x, $y);
		2266	}
		2267	})->prio (1);
		2268	}
		2269
		2270	=item $player_object->enter_exit ($exit_object)
		2271
		2272	=cut
		2273
		2274	sub parse_random_map_params {
		2275	my ($spec) = @_;
		2276
		2277	my $rmp = { # defaults
		2278	xsize => (cf::rndm 15, 40),
		2279	ysize => (cf::rndm 15, 40),
		2280	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2281	#layout => string,
		2282	};
		2283
		2284	for (split /\n/, $spec) {
		2285	my ($k, $v) = split /\s+/, $_, 2;
		2286
		2287	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2288	}
		2289
		2290	$rmp
		2291	}
		2292
		2293	sub prepare_random_map {
		2294	my ($exit) = @_;
		2295
		2296	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2297
		2298	# all this does is basically replace the /! path by
		2299	# a new random map path (?random/...) with a seed
		2300	# that depends on the exit object
		2301
		2302	my $rmp = parse_random_map_params $exit->msg;
		2303
		2304	if ($exit->map) {
		2305	$rmp->{region} = $exit->region->name;
		2306	$rmp->{origin_map} = $exit->map->path;
		2307	$rmp->{origin_x} = $exit->x;
		2308	$rmp->{origin_y} = $exit->y;
		2309	}
		2310
		2311	$rmp->{random_seed} ||= $exit->random_seed;
		2312
		2313	my $data = cf::to_json $rmp;
		2314	my $md5 = Digest::MD5::md5_hex $data;
		2315	my $meta = "$RANDOMDIR/$md5.meta";
		2316
		2317	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2318	aio_write $fh, 0, (length $data), $data, 0;
		2319	undef $fh;
		2320	aio_rename "$meta~", $meta;
		2321
		2322	$exit->slaying ("?random/$md5");
		2323	$exit->msg (undef);
		2324	}
		2325	}
		2326
		2327	sub cf::object::player::enter_exit {
		2328	my ($self, $exit) = @_;
		2329
		2330	return unless $self->type == cf::PLAYER;
		2331
		2332	if ($exit->slaying eq "/!") {
		2333	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2334	# the problem is that $exit might not survive long enough
		2335	# so it needs to be done right now, right here
		2336	cf::sync_job { prepare_random_map $exit };
		2337	}
		2338
		2339	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2340	my $hp = $exit->stats->hp;
		2341	my $sp = $exit->stats->sp;
		2342
		2343	$self->enter_link;
		2344
		2345	(async {
		2346	$self->deactivate_recursive; # just to be sure
		2347	unless (eval {
		2348	$self->goto ($slaying, $hp, $sp);
		2349
		2350	1;
		2351	}) {
		2352	$self->message ("Something went wrong deep within the crossfire server. "
		2353	. "I'll try to bring you back to the map you were before. "
		2354	. "Please report this to the dungeon master!",
		2355	cf::NDI_UNIQUE | cf::NDI_RED);
		2356
		2357	warn "ERROR in enter_exit: $@";
		2358	$self->leave_link;
		2359	}
		2360	})->prio (1);
		2361	}
		2362
834	=head3 cf::client	2363	=head3 cf::client
835		2364
836	=over 4	2365	=over 4
837		2366
838	=item $client->send_drawinfo ($text, $flags)	2367	=item $client->send_drawinfo ($text, $flags)
…		…
844		2373
845	sub cf::client::send_drawinfo {	2374	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	2375	my ($self, $text, $flags) = @_;
847		2376
848	utf8::encode $text;	2377	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2378	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	2379	}
851		2380
		2381	=item $client->send_msg ($color, $type, $msg, [extra...])
		2382
		2383	Send a drawinfo or msg packet to the client, formatting the msg for the
		2384	client if neccessary. C<$type> should be a string identifying the type of
		2385	the message, with C<log> being the default. If C<$color> is negative, suppress
		2386	the message unless the client supports the msg packet.
		2387
		2388	=cut
		2389
		2390	sub cf::client::send_msg {
		2391	my ($self, $color, $type, $msg, @extra) = @_;
		2392
		2393	$msg = $self->pl->expand_cfpod ($msg);
		2394
		2395	if ($self->can_msg) {
		2396	$self->send_packet ("msg " . cf::to_json [$color, $type, $msg, @extra]);
		2397	} else {
		2398	# replace some tags by gcfclient-compatible ones
		2399	for ($msg) {
		2400	1 while
		2401	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2402	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2403	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2404	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2405	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2406	}
		2407
		2408	if ($color >= 0) {
		2409	if (0 && $msg =~ /\[/) {
		2410	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2411	} else {
		2412	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2413	$self->send_packet ("drawinfo $color $msg")
		2414	}
		2415	}
		2416	}
		2417	}
		2418
		2419	=item $client->ext_event ($type, %msg)
		2420
		2421	Sends an ext event to the client.
		2422
		2423	=cut
		2424
		2425	sub cf::client::ext_event($$%) {
		2426	my ($self, $type, %msg) = @_;
		2427
		2428	$msg{msgtype} = "event_$type";
		2429	$self->send_packet ("ext " . cf::to_json \%msg);
		2430	}
852		2431
853	=item $success = $client->query ($flags, "text", \&cb)	2432	=item $success = $client->query ($flags, "text", \&cb)
854		2433
855	Queues a query to the client, calling the given callback with	2434	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>,	2435	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>.	2436	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
858		2437
859	Queries can fail, so check the return code. Or don't, as queries will become	2438	Queries can fail, so check the return code. Or don't, as queries will
860	reliable at some point in the future.	2439	become reliable at some point in the future.
861		2440
862	=cut	2441	=cut
863		2442
864	sub cf::client::query {	2443	sub cf::client::query {
865	my ($self, $flags, $text, $cb) = @_;	2444	my ($self, $flags, $text, $cb) = @_;
…		…
873	utf8::encode $text;	2452	utf8::encode $text;
874	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2453	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
875		2454
876	$self->send_packet ($self->{query_queue}[0][0])	2455	$self->send_packet ($self->{query_queue}[0][0])
877	if @{ $self->{query_queue} } == 1;	2456	if @{ $self->{query_queue} } == 1;
		2457
		2458	1
878	}	2459	}
879		2460
880	cf::client->attach (	2461	cf::client->attach (
881	on_reply => sub {	2462	on_reply => sub {
882	my ($ns, $msg) = @_;	2463	my ($ns, $msg) = @_;
883		2464
884	# this weird shuffling is so that direct followup queries	2465	# this weird shuffling is so that direct followup queries
885	# get handled first	2466	# get handled first
886	my $queue = delete $ns->{query_queue};	2467	my $queue = delete $ns->{query_queue}
		2468	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		2469
888	(shift @$queue)->[1]->($msg);	2470	(shift @$queue)->[1]->($msg);
		2471	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		2472
890	push @{ $ns->{query_queue} }, @$queue;	2473	push @{ $ns->{query_queue} }, @$queue;
891		2474
892	if (@{ $ns->{query_queue} } == @$queue) {	2475	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	2476	if (@$queue) {
…		…
895	} else {	2478	} else {
896	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2479	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
897	}	2480	}
898	}	2481	}
899	},	2482	},
		2483	on_exticmd => sub {
		2484	my ($ns, $buf) = @_;
		2485
		2486	my $msg = eval { from_json $buf };
		2487
		2488	if (ref $msg) {
		2489	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2490	if (my %reply = $cb->($ns, $msg)) {
		2491	$reply{msgid} = $msg->{msgid};
		2492	$ns->send ("ext " . cf::to_json \%reply);
		2493	}
		2494	}
		2495	} else {
		2496	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2497	}
		2498
		2499	cf::override;
		2500	},
900	);	2501	);
901		2502
902	=item $client->coro (\&cb)	2503	=item $client->async (\&cb)
903		2504
904	Create a new coroutine, running the specified callback. The coroutine will	2505	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	2506	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	2507	or loss of connection).
907		2508
908	=cut	2509	=cut
909		2510
910	sub cf::client::coro {	2511	sub cf::client::async {
911	my ($self, $cb) = @_;	2512	my ($self, $cb) = @_;
912		2513
913	my $coro; $coro = async {	2514	my $coro = &Coro::async ($cb);
914	eval {	2515
915	$cb->();	2516	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	2517	delete $self->{_coro}{$coro+0};
919	};	2518	});
920		2519
921	$self->{_coro}{$coro+0} = $coro;	2520	$self->{_coro}{$coro+0} = $coro;
		2521
		2522	$coro
922	}	2523	}
923		2524
924	cf::client->attach (	2525	cf::client->attach (
925	on_destroy => sub {	2526	on_destroy => sub {
926	my ($ns) = @_;	2527	my ($ns) = @_;
…		…
951		2552
952	# here we export the classes and methods available to script code	2553	# here we export the classes and methods available to script code
953		2554
954	=pod	2555	=pod
955		2556
956	The following fucntions and emthods are available within a safe environment:	2557	The following functions and methods are available within a safe environment:
957		2558
958	cf::object contr pay_amount pay_player map	2559	cf::object contr pay_amount pay_player map
959	cf::object::player player	2560	cf::object::player player
960	cf::player peaceful	2561	cf::player peaceful
961	cf::map trigger	2562	cf::map trigger
…		…
1042	=back	2643	=back
1043		2644
1044	=cut	2645	=cut
1045		2646
1046	#############################################################################	2647	#############################################################################
		2648	# the server's init and main functions
1047		2649
1048	=head2 EXTENSION DATABASE SUPPORT	2650	sub load_facedata($) {
		2651	my ($path) = @_;
1049		2652
1050	Crossfire maintains a very simple database for extension use. It can	2653	warn "loading facedata from $path\n";
1051	currently store anything that can be serialised using Storable, which
1052	excludes objects.
1053		2654
1054	The parameter C<$family> should best start with the name of the extension	2655	my $facedata;
1055	using it, it should be unique.	2656	0 < aio_load $path, $facedata
		2657	or die "$path: $!";
1056		2658
1057	=over 4	2659	$facedata = Coro::Storable::thaw $facedata;
1058		2660
1059	=item $hashref = cf::db_get $family	2661	$facedata->{version} == 2
		2662	or cf::cleanup "$path: version mismatch, cannot proceed.";
1060		2663
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	}	2664	{
		2665	my $faces = $facedata->{faceinfo};
1098		2666
1099	my $pid;	2667	while (my ($face, $info) = each %$faces) {
1100		2668	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1101	sub db_save() {	2669	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
1102	warn "saving database $path\n";#d# remove later	2670	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
1103	waitpid $pid, 0 if $pid;	2671	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1104	if (0 == ($pid = fork)) {	2672	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]} = $_[1];
1139	}
1140	db_dirty;
1141	}
1142
1143	cf::global->attach (
1144	prio => 10000,
1145	on_cleanup => sub {
1146	db_sync;
1147	},	2673	}
1148	);
1149	}
1150		2674
1151	#############################################################################	2675	while (my ($face, $info) = each %$faces) {
1152	# the server's main()	2676	next unless $info->{smooth};
		2677	my $idx = cf::face::find $face
		2678	or next;
		2679	if (my $smooth = cf::face::find $info->{smooth}) {
		2680	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2681	} else {
		2682	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2683	}
		2684	Coro::cede;
		2685	}
		2686	}
		2687
		2688	{
		2689	my $anims = $facedata->{animinfo};
		2690
		2691	while (my ($anim, $info) = each %$anims) {
		2692	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2693	Coro::cede;
		2694	}
		2695
		2696	cf::anim::invalidate_all; # d'oh
		2697	}
		2698
		2699	1
		2700	}
		2701
		2702	sub reload_regions {
		2703	load_resource_file "$MAPDIR/regions"
		2704	or die "unable to load regions file\n";
		2705	}
		2706
		2707	sub reload_facedata {
		2708	load_facedata "$DATADIR/facedata"
		2709	or die "unable to load facedata\n";
		2710	}
		2711
		2712	sub reload_archetypes {
		2713	load_resource_file "$DATADIR/archetypes"
		2714	or die "unable to load archetypes\n";
		2715	}
		2716
		2717	sub reload_treasures {
		2718	load_resource_file "$DATADIR/treasures"
		2719	or die "unable to load treasurelists\n";
		2720	}
		2721
		2722	sub reload_resources {
		2723	warn "reloading resource files...\n";
		2724
		2725	reload_regions;
		2726	reload_facedata;
		2727	#reload_archetypes;#d#
		2728	reload_archetypes;
		2729	reload_treasures;
		2730
		2731	warn "finished reloading resource files\n";
		2732	}
		2733
		2734	sub init {
		2735	reload_resources;
		2736	}
1153		2737
1154	sub cfg_load {	2738	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2739	open my $fh, "<:utf8", "$CONFDIR/config"
1156	or return;	2740	or return;
1157		2741
1158	local $/;	2742	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2743	*CFG = YAML::Syck::Load <$fh>;
		2744
		2745	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2746
		2747	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2748	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2749
		2750	if (exists $CFG{mlockall}) {
		2751	eval {
		2752	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2753	and die "WARNING: m(un)lockall failed: $!\n";
		2754	};
		2755	warn $@ if $@;
		2756	}
1160	}	2757	}
1161		2758
1162	sub main {	2759	sub main {
		2760	# we must not ever block the main coroutine
		2761	local $Coro::idle = sub {
		2762	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2763	(async {
		2764	Event::one_event;
		2765	})->prio (Coro::PRIO_MAX);
		2766	};
		2767
1163	cfg_load;	2768	cfg_load;
1164	db_load;	2769	db_init;
1165	load_extensions;	2770	load_extensions;
		2771
		2772	$TICK_WATCHER->start;
1166	Event::loop;	2773	Event::loop;
1167	}	2774	}
1168		2775
1169	#############################################################################	2776	#############################################################################
1170	# initialisation	2777	# initialisation and cleanup
1171		2778
1172	sub _perl_reload(&) {	2779	# install some emergency cleanup handlers
		2780	BEGIN {
		2781	for my $signal (qw(INT HUP TERM)) {
		2782	Event->signal (
		2783	reentrant => 0,
		2784	data => WF_AUTOCANCEL,
		2785	signal => $signal,
		2786	prio => 0,
		2787	cb => sub {
		2788	cf::cleanup "SIG$signal";
		2789	},
		2790	);
		2791	}
		2792	}
		2793
		2794	sub write_runtime {
		2795	my $runtime = "$LOCALDIR/runtime";
		2796
		2797	# first touch the runtime file to show we are still running:
		2798	# the fsync below can take a very very long time.
		2799
		2800	IO::AIO::aio_utime $runtime, undef, undef;
		2801
		2802	my $guard = cf::lock_acquire "write_runtime";
		2803
		2804	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2805	or return;
		2806
		2807	my $value = $cf::RUNTIME + 90 + 10;
		2808	# 10 is the runtime save interval, for a monotonic clock
		2809	# 60 allows for the watchdog to kill the server.
		2810
		2811	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2812	and return;
		2813
		2814	# always fsync - this file is important
		2815	aio_fsync $fh
		2816	and return;
		2817
		2818	# touch it again to show we are up-to-date
		2819	aio_utime $fh, undef, undef;
		2820
		2821	close $fh
		2822	or return;
		2823
		2824	aio_rename "$runtime~", $runtime
		2825	and return;
		2826
		2827	warn "runtime file written.\n";
		2828
		2829	1
		2830	}
		2831
		2832	sub emergency_save() {
		2833	my $freeze_guard = cf::freeze_mainloop;
		2834
		2835	warn "enter emergency perl save\n";
		2836
		2837	cf::sync_job {
		2838	# use a peculiar iteration method to avoid tripping on perl
		2839	# refcount bugs in for. also avoids problems with players
		2840	# and maps saved/destroyed asynchronously.
		2841	warn "begin emergency player save\n";
		2842	for my $login (keys %cf::PLAYER) {
		2843	my $pl = $cf::PLAYER{$login} or next;
		2844	$pl->valid or next;
		2845	$pl->save;
		2846	}
		2847	warn "end emergency player save\n";
		2848
		2849	warn "begin emergency map save\n";
		2850	for my $path (keys %cf::MAP) {
		2851	my $map = $cf::MAP{$path} or next;
		2852	$map->valid or next;
		2853	$map->save;
		2854	}
		2855	warn "end emergency map save\n";
		2856
		2857	warn "begin emergency database checkpoint\n";
		2858	BDB::db_env_txn_checkpoint $DB_ENV;
		2859	warn "end emergency database checkpoint\n";
		2860	};
		2861
		2862	warn "leave emergency perl save\n";
		2863	}
		2864
		2865	sub post_cleanup {
1173	my ($msg) = @_;	2866	my ($make_core) = @_;
1174		2867
1175	$msg->("reloading...");	2868	warn Carp::longmess "post_cleanup backtrace"
		2869	if $make_core;
		2870	}
1176		2871
1177	eval {	2872	sub do_reload_perl() {
1178	# cancel all watchers	2873	# can/must only be called in main
		2874	if ($Coro::current != $Coro::main) {
		2875	warn "can only reload from main coroutine";
		2876	return;
		2877	}
		2878
		2879	warn "reloading...";
		2880
		2881	warn "entering sync_job";
		2882
		2883	cf::sync_job {
		2884	cf::write_runtime; # external watchdog should not bark
		2885	cf::emergency_save;
		2886	cf::write_runtime; # external watchdog should not bark
		2887
		2888	warn "syncing database to disk";
		2889	BDB::db_env_txn_checkpoint $DB_ENV;
		2890
		2891	# if anything goes wrong in here, we should simply crash as we already saved
		2892
		2893	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2894	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2895	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2896	}
1182		2897
1183	# unload all extensions	2898	warn "flushing outstanding aio requests";
1184	for (@exts) {	2899	for (;;) {
1185	$msg->("unloading <$_>");	2900	BDB::flush;
1186	unload_extension $_;	2901	IO::AIO::flush;
		2902	Coro::cede;
		2903	last unless IO::AIO::nreqs || BDB::nreqs;
		2904	warn "iterate...";
		2905	}
		2906
		2907	++$RELOAD;
		2908
		2909	warn "cancelling all extension coros";
		2910	$_->cancel for values %EXT_CORO;
		2911	%EXT_CORO = ();
		2912
		2913	warn "removing commands";
		2914	%COMMAND = ();
		2915
		2916	warn "removing ext/exti commands";
		2917	%EXTCMD = ();
		2918	%EXTICMD = ();
		2919
		2920	warn "unloading/nuking all extensions";
		2921	for my $pkg (@EXTS) {
		2922	warn "... unloading $pkg";
		2923
		2924	if (my $cb = $pkg->can ("unload")) {
		2925	eval {
		2926	$cb->($pkg);
		2927	1
		2928	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2929	}
1188		2930
		2931	warn "... nuking $pkg";
		2932	Symbol::delete_package $pkg;
		2933	}
		2934
1189	# unload all modules loaded from $LIBDIR	2935	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2936	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2937	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2938
1193	$msg->("removing <$k>");	2939	warn "... unloading $k";
1194	delete $INC{$k};	2940	delete $INC{$k};
1195		2941
1196	$k =~ s/\.pm$//;	2942	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2943	$k =~ s/\//::/g;
1198		2944
…		…
1201	}	2947	}
1202		2948
1203	Symbol::delete_package $k;	2949	Symbol::delete_package $k;
1204	}	2950	}
1205		2951
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2952	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2953	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2954	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2955
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2956	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2957	delete $INC{"cf.pm"};
		2958	delete $INC{"cf/pod.pm"};
1218		2959
1219	# don't, removes xs symbols, too,	2960	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2961	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2962	#Symbol::delete_package __PACKAGE__;
1222		2963
1223	# reload cf.pm	2964	warn "unload completed, starting to reload now";
		2965
1224	$msg->("reloading cf.pm");	2966	warn "reloading cf.pm";
1225	require cf;	2967	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2968	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2969
1228
1229	# load config and database again	2970	warn "loading config and database again";
1230	cf::cfg_load;	2971	cf::cfg_load;
1231	cf::db_load;
1232		2972
1233	# load extensions	2973	warn "loading extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2974	cf::load_extensions;
1236		2975
1237	# reattach attachments to objects	2976	warn "reattaching attachments to objects/players";
1238	$msg->("reattach");	2977	_global_reattach; # objects, sockets
1239	_global_reattach;	2978	warn "reattaching attachments to maps";
		2979	reattach $_ for values %MAP;
		2980	warn "reattaching attachments to players";
		2981	reattach $_ for values %PLAYER;
		2982
		2983	warn "leaving sync_job";
		2984
		2985	1
		2986	} or do {
		2987	warn $@;
		2988	warn "error while reloading, exiting.";
		2989	exit 1;
1240	};	2990	};
1241	$msg->($@) if $@;
1242		2991
1243	$msg->("reloaded");	2992	warn "reloaded";
1244	};	2993	};
1245		2994
1246	sub perl_reload() {	2995	our $RELOAD_WATCHER; # used only during reload
1247	_perl_reload {	2996
1248	warn $_[0];	2997	sub reload_perl() {
1249	print "$_[0]\n";	2998	# doing reload synchronously and two reloads happen back-to-back,
		2999	# coro crashes during coro_state_free->destroy here.
		3000
		3001	$RELOAD_WATCHER ||= Event->timer (
		3002	reentrant => 0,
		3003	after => 0,
		3004	data => WF_AUTOCANCEL,
		3005	cb => sub {
		3006	do_reload_perl;
		3007	undef $RELOAD_WATCHER;
		3008	},
1250	};	3009	);
1251	}	3010	}
1252		3011
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	3012	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	3013	my ($who, $arg) = @_;
1257		3014
1258	if ($who->flag (FLAG_WIZ)) {	3015	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	3016	$who->message ("reloading server.");
1260	warn $_[0];	3017	async { reload_perl };
1261	$who->message ($_[0]);	3018	}
		3019	};
		3020
		3021	unshift @INC, $LIBDIR;
		3022
		3023	my $bug_warning = 0;
		3024
		3025	our @WAIT_FOR_TICK;
		3026	our @WAIT_FOR_TICK_BEGIN;
		3027
		3028	sub wait_for_tick {
		3029	return unless $TICK_WATCHER->is_active;
		3030	return if $Coro::current == $Coro::main;
		3031
		3032	my $signal = new Coro::Signal;
		3033	push @WAIT_FOR_TICK, $signal;
		3034	$signal->wait;
		3035	}
		3036
		3037	sub wait_for_tick_begin {
		3038	return unless $TICK_WATCHER->is_active;
		3039	return if $Coro::current == $Coro::main;
		3040
		3041	my $signal = new Coro::Signal;
		3042	push @WAIT_FOR_TICK_BEGIN, $signal;
		3043	$signal->wait;
		3044	}
		3045
		3046	my $min = 1e6;#d#
		3047	my $avg = 10;
		3048	$TICK_WATCHER = Event->timer (
		3049	reentrant => 0,
		3050	parked => 1,
		3051	prio => 0,
		3052	at => $NEXT_TICK || $TICK,
		3053	data => WF_AUTOCANCEL,
		3054	cb => sub {
		3055	if ($Coro::current != $Coro::main) {
		3056	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3057	unless ++$bug_warning > 10;
		3058	return;
		3059	}
		3060
		3061	$NOW = $tick_start = Event::time;
		3062
		3063	cf::server_tick; # one server iteration
		3064
		3065	0 && sync_job {#d#
		3066	for(1..10) {
		3067	my $t = Event::time;
		3068	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3069	or die;
		3070
		3071	$map->width (50);
		3072	$map->height (50);
		3073	$map->alloc;
		3074	$map->_load_objects ("/tmp/x.map", 1);
		3075	my $t = Event::time - $t;
		3076
		3077	#next unless $t < 0.0013;#d#
		3078	if ($t < $min) {
		3079	$min = $t;
		3080	}
		3081	$avg = $avg * 0.99 + $t * 0.01;
		3082	}
		3083	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3084	exit 0;
		3085	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1262	};	3086	};
1263	}
1264	};
1265		3087
1266	unshift @INC, $LIBDIR;	3088	$RUNTIME += $TICK;
1267
1268	$TICK_WATCHER = Event->timer (
1269	prio => 0,
1270	at => $NEXT_TICK || 1,
1271	data => WF_AUTOCANCEL,
1272	cb => sub {
1273	cf::server_tick; # one server iteration
1274
1275	my $NOW = Event::time;
1276	$NEXT_TICK += $TICK;	3089	$NEXT_TICK += $TICK;
		3090
		3091	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3092	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3093	Coro::async_pool {
		3094	write_runtime
		3095	or warn "ERROR: unable to write runtime file: $!";
		3096	};
		3097	}
		3098
		3099	# my $AFTER = Event::time;
		3100	# warn $AFTER - $NOW;#d#
		3101
		3102	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3103	$sig->send;
		3104	}
		3105	while (my $sig = shift @WAIT_FOR_TICK) {
		3106	$sig->send;
		3107	}
		3108
		3109	$NOW = Event::time;
1277		3110
1278	# if we are delayed by four ticks or more, skip them all	3111	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3112	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1280		3113
1281	$TICK_WATCHER->at ($NEXT_TICK);	3114	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	3115	$TICK_WATCHER->start;
		3116
		3117	$LOAD = ($NOW - $tick_start) / $TICK;
		3118	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3119
		3120	_post_tick;
		3121
		3122
1283	},	3123	},
1284	);	3124	);
1285		3125
		3126	{
		3127	BDB::max_poll_time $TICK * 0.1;
		3128	$BDB_POLL_WATCHER = Event->io (
		3129	reentrant => 0,
		3130	fd => BDB::poll_fileno,
		3131	poll => 'r',
		3132	prio => 0,
		3133	data => WF_AUTOCANCEL,
		3134	cb => \&BDB::poll_cb,
		3135	);
		3136	BDB::min_parallel 8;
		3137
		3138	BDB::set_sync_prepare {
		3139	my $status;
		3140	my $current = $Coro::current;
		3141	(
		3142	sub {
		3143	$status = $!;
		3144	$current->ready; undef $current;
		3145	},
		3146	sub {
		3147	Coro::schedule while defined $current;
		3148	$! = $status;
		3149	},
		3150	)
		3151	};
		3152
		3153	unless ($DB_ENV) {
		3154	$DB_ENV = BDB::db_env_create;
		3155
		3156	cf::sync_job {
		3157	eval {
		3158	BDB::db_env_open
		3159	$DB_ENV,
		3160	$BDBDIR,
		3161	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3162	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3163	0666;
		3164
		3165	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3166
		3167	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3168	$DB_ENV->set_lk_detect;
		3169	};
		3170
		3171	cf::cleanup "db_env_open(db): $@" if $@;
		3172	};
		3173	}
		3174	}
		3175
		3176	{
		3177	IO::AIO::min_parallel 8;
		3178
		3179	undef $Coro::AIO::WATCHER;
1286	IO::AIO::max_poll_time $TICK * 0.2;	3180	IO::AIO::max_poll_time $TICK * 0.1;
1287		3181	$AIO_POLL_WATCHER = Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	3182	reentrant => 0,
1289	poll => 'r',
1290	prio => 5,
1291	data => WF_AUTOCANCEL,	3183	data => WF_AUTOCANCEL,
		3184	fd => IO::AIO::poll_fileno,
		3185	poll => 'r',
		3186	prio => 6,
1292	cb => \&IO::AIO::poll_cb);	3187	cb => \&IO::AIO::poll_cb,
		3188	);
		3189	}
		3190
		3191	my $_log_backtrace;
		3192
		3193	sub _log_backtrace {
		3194	my ($msg, @addr) = @_;
		3195
		3196	$msg =~ s/\n//;
		3197
		3198	# limit the # of concurrent backtraces
		3199	if ($_log_backtrace < 2) {
		3200	++$_log_backtrace;
		3201	async {
		3202	my @bt = fork_call {
		3203	@addr = map { sprintf "%x", $_ } @addr;
		3204	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3205	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3206	or die "addr2line: $!";
		3207
		3208	my @funcs;
		3209	my @res = <$fh>;
		3210	chomp for @res;
		3211	while (@res) {
		3212	my ($func, $line) = splice @res, 0, 2, ();
		3213	push @funcs, "[$func] $line";
		3214	}
		3215
		3216	@funcs
		3217	};
		3218
		3219	LOG llevInfo, "[ABT] $msg\n";
		3220	LOG llevInfo, "[ABT] $_\n" for @bt;
		3221	--$_log_backtrace;
		3222	};
		3223	} else {
		3224	LOG llevInfo, "[ABT] $msg\n";
		3225	LOG llevInfo, "[ABT] [suppressed]\n";
		3226	}
		3227	}
		3228
		3229	# load additional modules
		3230	use cf::pod;
		3231
		3232	END { cf::emergency_save }
1293		3233
1294	1	3234	1
1295		3235

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