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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC vs.
Revision 1.282 by elmex, Tue Jun 19 18:15:34 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 3.3 ();	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;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
19		24
		25	use BDB ();
		26	use Data::Dumper;
20	use Digest::MD5;	27	use Digest::MD5;
21	use Fcntl;	28	use Fcntl;
22	use IO::AIO 2.31 ();
23	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
24	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
25		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
26	use Event; $Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
27		41
28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
29	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
30		44
31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
32		46
33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
34		48
35	our %COMMAND = ();	49	our %COMMAND = ();
36	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
37	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
38		56
		57	our $RELOAD; # number of reloads so far
39	our @EVENT;	58	our @EVENT;
40	our $LIBDIR = datadir . "/ext";
41		59
42	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
43	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
44	our $NEXT_TICK;	76	our $NEXT_TICK;
45	our $NOW;	77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
46		82
47	our %CFG;	83	our %CFG;
48		84
49	our $UPTIME; $UPTIME ||= time;	85	our $UPTIME; $UPTIME ||= time;
50	our $RUNTIME;	86	our $RUNTIME;
51		87
		88	our %PLAYER; # all users
52	our %MAP; # all maps	89	our %MAP; # all maps
53	our $LINK_MAP; # the special {link} map	90	our $LINK_MAP; # the special {link} map, which is always available
54	our $RANDOM_MAPS = cf::localdir . "/random";	91
55	our %EXT_CORO;	92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
56		98
57	binmode STDOUT;	99	binmode STDOUT;
58	binmode STDERR;	100	binmode STDERR;
59		101
60	# read virtual server time, if available	102	# read virtual server time, if available
61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
62	open my $fh, "<", cf::localdir . "/runtime"	104	open my $fh, "<", "$LOCALDIR/runtime"
63	or die "unable to read runtime file: $!";	105	or die "unable to read runtime file: $!";
64	$RUNTIME = <$fh> + 0.;	106	$RUNTIME = <$fh> + 0.;
65	}	107	}
66		108
67	mkdir cf::localdir;	109	mkdir $_
68	mkdir cf::localdir . "/" . cf::playerdir;	110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
69	mkdir cf::localdir . "/" . cf::tmpdir;
70	mkdir cf::localdir . "/" . cf::uniquedir;
71	mkdir $RANDOM_MAPS;
72		111
73	# a special map that is always available
74	our $LINK_MAP;
75	our $EMERGENCY_POSITION;	112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
76		115
77	#############################################################################	116	#############################################################################
78		117
79	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
80		119
…		…
87	=item $cf::RUNTIME	126	=item $cf::RUNTIME
88		127
89	The time this server has run, starts at 0 and is increased by $cf::TICK on	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
90	every server tick.	129	every server tick.
91		130
92	=item $cf::LIBDIR	131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
93		134
94	The perl library directory, where extensions and cf-specific modules can	135	Various directories - "/etc", read-only install directory, perl-library
95	be found. It will be added to C<@INC> automatically.	136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
96		139
97	=item $cf::NOW	140	=item $cf::NOW
98		141
99	The time of the last (current) server tick.	142	The time of the last (current) server tick.
100		143
101	=item $cf::TICK	144	=item $cf::TICK
102		145
103	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
104		157
105	=item %cf::CFG	158	=item %cf::CFG
106		159
107	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
108	from wherever your confdir points to.	161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
109		168
110	=back	169	=back
111		170
112	=cut	171	=cut
113		172
114	BEGIN {	173	BEGIN {
115	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
116	my $msg = join "", @_;	175	my $msg = join "", @_;
117	utf8::encode $msg;
118		176
119	$msg .= "\n"	177	$msg .= "\n"
120	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
121		179
		180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
122	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
123	};	184	};
124	}	185	}
125		186
126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
132		194
133	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
134	# within the Safe compartment.	196	# within the Safe compartment.
135	for my $pkg (qw(	197	for my $pkg (qw(
136	cf::global cf::attachable	198	cf::global cf::attachable
…		…
145		207
146	$Event::DIED = sub {	208	$Event::DIED = sub {
147	warn "error in event callback: @_";	209	warn "error in event callback: @_";
148	};	210	};
149		211
150	my %ext_pkg;	212	#############################################################################
151	my @exts;
152	my @hook;
153		213
154	=head2 UTILITY FUNCTIONS	214	=head2 UTILITY FUNCTIONS
155		215
156	=over 4	216	=over 4
157		217
158	=cut	218	=item dumpval $ref
159		219
		220	=cut
		221
		222	sub dumpval {
		223	eval {
		224	local $SIG{__DIE__};
		225	my $d;
		226	if (1) {
		227	$d = new Data::Dumper([$_[0]], ["*var"]);
		228	$d->Terse(1);
		229	$d->Indent(2);
		230	$d->Quotekeys(0);
		231	$d->Useqq(1);
		232	#$d->Bless(...);
		233	$d->Seen($_[1]) if @_ > 1;
		234	$d = $d->Dump();
		235	}
		236	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		237	$d
		238	} || "[unable to dump $_[0]: '$@']";
		239	}
		240
160	use JSON::Syck (); # TODO# replace by JSON::PC once working	241	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
161		242
162	=item $ref = cf::from_json $json	243	=item $ref = cf::from_json $json
163		244
164	Converts a JSON string into the corresponding perl data structure.	245	Converts a JSON string into the corresponding perl data structure.
165		246
166	=cut
167
168	sub from_json($) {
169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
170	JSON::Syck::Load $_[0]
171	}
172
173	=item $json = cf::to_json $ref	247	=item $json = cf::to_json $ref
174		248
175	Converts a perl data structure into its JSON representation.	249	Converts a perl data structure into its JSON representation.
176
177	=cut
178
179	sub to_json($) {
180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
181	JSON::Syck::Dump $_[0]
182	}
183		250
184	=item cf::lock_wait $string	251	=item cf::lock_wait $string
185		252
186	Wait until the given lock is available. See cf::lock_acquire.	253	Wait until the given lock is available. See cf::lock_acquire.
187		254
…		…
193	returned.	260	returned.
194		261
195	Lock names should begin with a unique identifier (for example, cf::map::find	262	Lock names should begin with a unique identifier (for example, cf::map::find
196	uses map_find and cf::map::load uses map_load).	263	uses map_find and cf::map::load uses map_load).
197		264
		265	=item $locked = cf::lock_active $string
		266
		267	Return true if the lock is currently active, i.e. somebody has locked it.
		268
198	=cut	269	=cut
199		270
200	our %LOCK;	271	our %LOCK;
201		272
202	sub lock_wait($) {	273	sub lock_wait($) {
…		…
221	# wake up all waiters, to be on the safe side	292	# wake up all waiters, to be on the safe side
222	$_->ready for @{ delete $LOCK{$key} };	293	$_->ready for @{ delete $LOCK{$key} };
223	}	294	}
224	}	295	}
225		296
		297	sub lock_active($) {
		298	my ($key) = @_;
		299
		300	! ! $LOCK{$key}
		301	}
		302
226	sub freeze_mainloop {	303	sub freeze_mainloop {
227	return unless $TICK_WATCHER->is_active;	304	return unless $TICK_WATCHER->is_active;
228		305
229	my $guard = Coro::guard { $TICK_WATCHER->start };	306	my $guard = Coro::guard {
		307	$TICK_WATCHER->start;
		308	};
230	$TICK_WATCHER->stop;	309	$TICK_WATCHER->stop;
231	$guard	310	$guard
232	}	311	}
233		312
234	=item cf::async { BLOCK }	313	=item cf::async { BLOCK }
…		…
241		320
242	BEGIN { *async = \&Coro::async_pool }	321	BEGIN { *async = \&Coro::async_pool }
243		322
244	=item cf::sync_job { BLOCK }	323	=item cf::sync_job { BLOCK }
245		324
246	The design of crossfire+ requires that the main coro ($Coro::main) is	325	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
247	always able to handle events or runnable, as crossfire+ is only partly	326	is always able to handle events or runnable, as Crossfire TRT is only
248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	327	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		328	acceptable.
249		329
250	If it must be done, put the blocking parts into C<sync_job>. This will run	330	If it must be done, put the blocking parts into C<sync_job>. This will run
251	the given BLOCK in another coroutine while waiting for the result. The	331	the given BLOCK in another coroutine while waiting for the result. The
252	server will be frozen during this time, so the block should either finish	332	server will be frozen during this time, so the block should either finish
253	fast or be very important.	333	fast or be very important.
…		…
256		336
257	sub sync_job(&) {	337	sub sync_job(&) {
258	my ($job) = @_;	338	my ($job) = @_;
259		339
260	if ($Coro::current == $Coro::main) {	340	if ($Coro::current == $Coro::main) {
		341	my $time = Event::time;
		342
261	# this is the main coro, too bad, we have to block	343	# this is the main coro, too bad, we have to block
262	# till the operation succeeds, freezing the server :/	344	# till the operation succeeds, freezing the server :/
263		345
264	# TODO: use suspend/resume instead	346	# TODO: use suspend/resume instead
265	# (but this is cancel-safe)	347	# (but this is cancel-safe)
…		…
276		358
277	while ($busy) {	359	while ($busy) {
278	Coro::cede or Event::one_event;	360	Coro::cede or Event::one_event;
279	}	361	}
280		362
		363	$time = Event::time - $time;
		364
		365	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		366	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		367
		368	$tick_start += $time; # do not account sync jobs to server load
		369
281	wantarray ? @res : $res[0]	370	wantarray ? @res : $res[0]
282	} else {	371	} else {
283	# we are in another coroutine, how wonderful, everything just works	372	# we are in another coroutine, how wonderful, everything just works
284		373
285	$job->()	374	$job->()
286	}	375	}
287	}	376	}
288		377
289	=item $coro = cf::async_ext { BLOCK }	378	=item $coro = cf::async_ext { BLOCK }
290		379
291	Like async, but this coro is automcatially being canceled when the	380	Like async, but this coro is automatically being canceled when the
292	extension calling this is being unloaded.	381	extension calling this is being unloaded.
293		382
294	=cut	383	=cut
295		384
296	sub async_ext(&) {	385	sub async_ext(&) {
…		…
304	$EXT_CORO{$coro+0} = $coro;	393	$EXT_CORO{$coro+0} = $coro;
305		394
306	$coro	395	$coro
307	}	396	}
308		397
309	sub write_runtime {	398	=item fork_call { }, $args
310	my $runtime = cf::localdir . "/runtime";
311		399
312	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	400	Executes the given code block with the given arguments in a seperate
313	or return;	401	process, returning the results. Everything must be serialisable with
		402	Coro::Storable. May, of course, block. Note that the executed sub may
		403	never block itself or use any form of Event handling.
314		404
315	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock	405	=cut
316	(aio_write $fh, 0, (length $value), $value, 0) <= 0
317	and return;
318		406
319	aio_fsync $fh	407	sub fork_call(&@) {
320	and return;	408	my ($cb, @args) = @_;
321		409
		410	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		411	# or die "socketpair: $!";
		412	pipe my $fh1, my $fh2
		413	or die "pipe: $!";
		414
		415	if (my $pid = fork) {
322	close $fh	416	close $fh2;
323	or return;
324		417
325	aio_rename "$runtime~", $runtime	418	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
326	and return;	419	$res = Coro::Storable::thaw $res;
327		420
		421	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		422
		423	die $$res unless "ARRAY" eq ref $res;
		424
		425	return wantarray ? @$res : $res->[-1];
		426	} else {
		427	reset_signals;
		428	local $SIG{__WARN__};
		429	local $SIG{__DIE__};
		430	eval {
		431	close $fh1;
		432
		433	my @res = eval { $cb->(@args) };
		434	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		435	};
		436
		437	warn $@ if $@;
		438	_exit 0;
328	1	439	}
		440	}
		441
		442	=item $value = cf::db_get $family => $key
		443
		444	Returns a single value from the environment database.
		445
		446	=item cf::db_put $family => $key => $value
		447
		448	Stores the given C<$value> in the family. It can currently store binary
		449	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		450
		451	=cut
		452
		453	our $DB;
		454
		455	sub db_init {
		456	unless ($DB) {
		457	$DB = BDB::db_create $DB_ENV;
		458
		459	cf::sync_job {
		460	eval {
		461	$DB->set_flags (BDB::CHKSUM);
		462
		463	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		464	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		465	cf::cleanup "db_open(db): $!" if $!;
		466	};
		467	cf::cleanup "db_open(db): $@" if $@;
		468	};
		469	}
		470	}
		471
		472	sub db_get($$) {
		473	my $key = "$_[0]/$_[1]";
		474
		475	cf::sync_job {
		476	BDB::db_get $DB, undef, $key, my $data;
		477
		478	$! ? ()
		479	: $data
		480	}
		481	}
		482
		483	sub db_put($$$) {
		484	BDB::dbreq_pri 4;
		485	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		486	}
		487
		488	=item cf::cache $id => [$paths...], $processversion => $process
		489
		490	Generic caching function that returns the value of the resource $id,
		491	caching and regenerating as required.
		492
		493	This function can block.
		494
		495	=cut
		496
		497	sub cache {
		498	my ($id, $src, $processversion, $process) = @_;
		499
		500	my $meta =
		501	join "\x00",
		502	$processversion,
		503	map {
		504	aio_stat $_
		505	and Carp::croak "$_: $!";
		506
		507	($_, (stat _)[7,9])
		508	} @$src;
		509
		510	my $dbmeta = db_get cache => "$id/meta";
		511	if ($dbmeta ne $meta) {
		512	# changed, we may need to process
		513
		514	my @data;
		515	my $md5;
		516
		517	for (0 .. $#$src) {
		518	0 <= aio_load $src->[$_], $data[$_]
		519	or Carp::croak "$src->[$_]: $!";
		520	}
		521
		522	# if processing is expensive, check
		523	# checksum first
		524	if (1) {
		525	$md5 =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	Coro::cede;
		530	($src->[$_], Digest::MD5::md5_hex $data[$_])
		531	} 0.. $#$src;
		532
		533
		534	my $dbmd5 = db_get cache => "$id/md5";
		535	if ($dbmd5 eq $md5) {
		536	db_put cache => "$id/meta", $meta;
		537
		538	return db_get cache => "$id/data";
		539	}
		540	}
		541
		542	my $t1 = Time::HiRes::time;
		543	my $data = $process->(\@data);
		544	my $t2 = Time::HiRes::time;
		545
		546	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		547
		548	db_put cache => "$id/data", $data;
		549	db_put cache => "$id/md5" , $md5;
		550	db_put cache => "$id/meta", $meta;
		551
		552	return $data;
		553	}
		554
		555	db_get cache => "$id/data"
		556	}
		557
		558	=item cf::datalog type => key => value, ...
		559
		560	Log a datalog packet of the given type with the given key-value pairs.
		561
		562	=cut
		563
		564	sub datalog($@) {
		565	my ($type, %kv) = @_;
		566	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
329	}	567	}
330		568
331	=back	569	=back
332		570
333	=cut	571	=cut
334
335	#############################################################################
336
337	package cf::path;
338
339	sub new {
340	my ($class, $path, $base) = @_;
341
342	$path = $path->as_string if ref $path;
343
344	my $self = bless { }, $class;
345
346	# {... are special paths that are not touched
347	# ?xxx/... are special absolute paths
348	# ?random/... random maps
349	# /! non-realised random map exit
350	# /... normal maps
351	# ~/... per-player maps without a specific player (DO NOT USE)
352	# ~user/... per-player map of a specific user
353
354	if ($path =~ /^{/) {
355	# fine as it is
356	} elsif ($path =~ s{^\?random/}{}) {
357	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
358	$self->{random} = cf::from_json $data;
359	} else {
360	if ($path =~ s{^~([^/]+)?}{}) {
361	$self->{user_rel} = 1;
362
363	if (defined $1) {
364	$self->{user} = $1;
365	} elsif ($base =~ m{^~([^/]+)/}) {
366	$self->{user} = $1;
367	} else {
368	warn "cannot resolve user-relative path without user <$path,$base>\n";
369	}
370	} elsif ($path =~ /^\//) {
371	# already absolute
372	} else {
373	$base =~ s{[^/]+/?$}{};
374	return $class->new ("$base/$path");
375	}
376
377	for ($path) {
378	redo if s{/\.?/}{/};
379	redo if s{/[^/]+/\.\./}{/};
380	}
381	}
382
383	$self->{path} = $path;
384
385	$self
386	}
387
388	# the name / primary key / in-game path
389	sub as_string {
390	my ($self) = @_;
391
392	$self->{user_rel} ? "~$self->{user}$self->{path}"
393	: $self->{random} ? "?random/$self->{path}"
394	: $self->{path}
395	}
396
397	# the displayed name, this is a one way mapping
398	sub visible_name {
399	my ($self) = @_;
400
401	# if (my $rmp = $self->{random}) {
402	# # todo: be more intelligent about this
403	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
404	# } else {
405	$self->as_string
406	# }
407	}
408
409	# escape the /'s in the path
410	sub _escaped_path {
411	# ∕ is U+2215
412	(my $path = $_[0]{path}) =~ s/\//∕/g;
413	$path
414	}
415
416	# the original (read-only) location
417	sub load_path {
418	my ($self) = @_;
419
420	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
421	}
422
423	# the temporary/swap location
424	sub save_path {
425	my ($self) = @_;
426
427	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
428	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
429	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
430	}
431
432	# the unique path, might be eq to save_path
433	sub uniq_path {
434	my ($self) = @_;
435
436	$self->{user_rel} || $self->{random}
437	? undef
438	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
439	}
440
441	# return random map parameters, or undef
442	sub random_map_params {
443	my ($self) = @_;
444
445	$self->{random}
446	}
447
448	# this is somewhat ugly, but style maps do need special treatment
449	sub is_style_map {
450	$_[0]{path} =~ m{^/styles/}
451	}
452
453	package cf;
454		572
455	#############################################################################	573	#############################################################################
456		574
457	=head2 ATTACHABLE OBJECTS	575	=head2 ATTACHABLE OBJECTS
458		576
…		…
460	attach callbacks/event handlers (a collection of which is called an "attachment")	578	attach callbacks/event handlers (a collection of which is called an "attachment")
461	to it. All such attachable objects support the following methods.	579	to it. All such attachable objects support the following methods.
462		580
463	In the following description, CLASS can be any of C<global>, C<object>	581	In the following description, CLASS can be any of C<global>, C<object>
464	C<player>, C<client> or C<map> (i.e. the attachable objects in	582	C<player>, C<client> or C<map> (i.e. the attachable objects in
465	crossfire+).	583	Crossfire TRT).
466		584
467	=over 4	585	=over 4
468		586
469	=item $attachable->attach ($attachment, key => $value...)	587	=item $attachable->attach ($attachment, key => $value...)
470		588
…		…
584	our @CB_TYPE = (); # registry for type (cf-object class) based events	702	our @CB_TYPE = (); # registry for type (cf-object class) based events
585	our @CB_MAP = ();	703	our @CB_MAP = ();
586		704
587	my %attachment;	705	my %attachment;
588		706
		707	sub cf::attachable::thawer_merge {
		708	# simply override everything except _meta
		709	local $_[0]{_meta};
		710	%{$_[0]} = %{$_[1]};
		711	}
		712
589	sub _attach_cb($$$$) {	713	sub _attach_cb($$$$) {
590	my ($registry, $event, $prio, $cb) = @_;	714	my ($registry, $event, $prio, $cb) = @_;
591		715
592	use sort 'stable';	716	use sort 'stable';
593		717
…		…
627	$registry = $CB_TYPE[$object_type] ||= [];	751	$registry = $CB_TYPE[$object_type] ||= [];
628		752
629	} elsif ($type eq "subtype") {	753	} elsif ($type eq "subtype") {
630	defined $object_type or Carp::croak "subtype specified without type";	754	defined $object_type or Carp::croak "subtype specified without type";
631	my $object_subtype = shift @arg;	755	my $object_subtype = shift @arg;
632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	756	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
633		757
634	} elsif ($type eq "package") {	758	} elsif ($type eq "package") {
635	my $pkg = shift @arg;	759	my $pkg = shift @arg;
636		760
637	while (my ($name, $id) = each %cb_id) {	761	while (my ($name, $id) = each %cb_id) {
…		…
666	_attach $registry, $klass, @attach;	790	_attach $registry, $klass, @attach;
667	}	791	}
668		792
669	$obj->{$name} = \%arg;	793	$obj->{$name} = \%arg;
670	} else {	794	} else {
671	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' which is not available, postponing.\n";
672	}	796	}
673		797
674	$obj->{_attachment}{$name} = undef;	798	$obj->{_attachment}{$name} = undef;
675	}	799	}
676		800
…		…
678	if (ref $_[0]) {	802	if (ref $_[0]) {
679	_object_attach @_;	803	_object_attach @_;
680	} else {	804	} else {
681	_attach shift->_attach_registry, @_;	805	_attach shift->_attach_registry, @_;
682	}	806	}
		807	_recalc_want;
683	};	808	};
684		809
685	# all those should be optimised	810	# all those should be optimised
686	sub cf::attachable::detach {	811	sub cf::attachable::detach {
687	my ($obj, $name) = @_;	812	my ($obj, $name) = @_;
…		…
690	delete $obj->{_attachment}{$name};	815	delete $obj->{_attachment}{$name};
691	reattach ($obj);	816	reattach ($obj);
692	} else {	817	} else {
693	Carp::croak "cannot, currently, detach class attachments";	818	Carp::croak "cannot, currently, detach class attachments";
694	}	819	}
		820	_recalc_want;
695	};	821	};
696		822
697	sub cf::attachable::attached {	823	sub cf::attachable::attached {
698	my ($obj, $name) = @_;	824	my ($obj, $name) = @_;
699		825
…		…
764	# object support	890	# object support
765		891
766	sub reattach {	892	sub reattach {
767	# basically do the same as instantiate, without calling instantiate	893	# basically do the same as instantiate, without calling instantiate
768	my ($obj) = @_;	894	my ($obj) = @_;
		895
		896	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
769		897
770	my $registry = $obj->registry;	898	my $registry = $obj->registry;
771		899
772	@$registry = ();	900	@$registry = ();
773		901
…		…
820	$filename, length $$rdata, scalar @$objs;	948	$filename, length $$rdata, scalar @$objs;
821		949
822	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	950	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
823	chmod SAVE_MODE, $fh;	951	chmod SAVE_MODE, $fh;
824	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	952	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
825	aio_fsync $fh;	953	aio_fsync $fh if $cf::USE_FSYNC;
826	close $fh;	954	close $fh;
827		955
828	if (@$objs) {	956	if (@$objs) {
829	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	957	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
830	chmod SAVE_MODE, $fh;	958	chmod SAVE_MODE, $fh;
831	my $data = Storable::nfreeze { version => 1, objs => $objs };	959	my $data = Storable::nfreeze { version => 1, objs => $objs };
832	aio_write $fh, 0, (length $data), $data, 0;	960	aio_write $fh, 0, (length $data), $data, 0;
833	aio_fsync $fh;	961	aio_fsync $fh if $cf::USE_FSYNC;
834	close $fh;	962	close $fh;
835	aio_rename "$filename.pst~", "$filename.pst";	963	aio_rename "$filename.pst~", "$filename.pst";
836	}	964	}
837	} else {	965	} else {
838	aio_unlink "$filename.pst";	966	aio_unlink "$filename.pst";
…		…
870	or return;	998	or return;
871	$av = eval { (Storable::thaw $av)->{objs} };	999	$av = eval { (Storable::thaw $av)->{objs} };
872	}	1000	}
873		1001
874	warn sprintf "loading %s (%d)\n",	1002	warn sprintf "loading %s (%d)\n",
875	$filename, length $data, scalar @{$av || []};#d#	1003	$filename, length $data, scalar @{$av || []};
876	return ($data, $av);	1004	return ($data, $av);
877	}	1005	}
		1006
		1007	=head2 COMMAND CALLBACKS
		1008
		1009	=over 4
		1010
		1011	=cut
878		1012
879	#############################################################################	1013	#############################################################################
880	# command handling &c	1014	# command handling &c
881		1015
882	=item cf::register_command $name => \&callback($ob,$args);	1016	=item cf::register_command $name => \&callback($ob,$args);
…		…
895	push @{ $COMMAND{$name} }, [$caller, $cb];	1029	push @{ $COMMAND{$name} }, [$caller, $cb];
896	}	1030	}
897		1031
898	=item cf::register_extcmd $name => \&callback($pl,$packet);	1032	=item cf::register_extcmd $name => \&callback($pl,$packet);
899		1033
900	Register a callbackf ro execution when the client sends an extcmd packet.	1034	Register a callback fro execution when the client sends an extcmd packet.
901		1035
902	If the callback returns something, it is sent back as if reply was being	1036	If the callback returns something, it is sent back as if reply was being
903	called.	1037	called.
904		1038
905	=cut	1039	=cut
906		1040
907	sub register_extcmd {	1041	sub register_extcmd {
908	my ($name, $cb) = @_;	1042	my ($name, $cb) = @_;
909		1043
910	my $caller = caller;
911	#warn "registering extcmd '$name' to '$caller'";
912
913	$EXTCMD{$name} = [$cb, $caller];	1044	$EXTCMD{$name} = $cb;
914	}	1045	}
915		1046
916	cf::player->attach (	1047	cf::player->attach (
917	on_command => sub {	1048	on_command => sub {
918	my ($pl, $name, $params) = @_;	1049	my ($pl, $name, $params) = @_;
…		…
931		1062
932	my $msg = eval { from_json $buf };	1063	my $msg = eval { from_json $buf };
933		1064
934	if (ref $msg) {	1065	if (ref $msg) {
935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1066	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
936	if (my %reply = $cb->[0]->($pl, $msg)) {	1067	if (my %reply = $cb->($pl, $msg)) {
937	$pl->ext_reply ($msg->{msgid}, %reply);	1068	$pl->ext_reply ($msg->{msgid}, %reply);
938	}	1069	}
939	}	1070	}
940	} else {	1071	} else {
941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1072	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
943		1074
944	cf::override;	1075	cf::override;
945	},	1076	},
946	);	1077	);
947		1078
948	sub register {
949	my ($base, $pkg) = @_;
950
951	#TODO
952	}
953
954	sub load_extension {	1079	sub load_extensions {
		1080	cf::sync_job {
		1081	my %todo;
		1082
		1083	for my $path (<$LIBDIR/*.ext>) {
		1084	next unless -r $path;
		1085
		1086	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1087	my $base = $1;
		1088	my $pkg = $1;
		1089	$pkg =~ s/[^[:word:]]/_/g;
		1090	$pkg = "ext::$pkg";
		1091
		1092	open my $fh, "<:utf8", $path
		1093	or die "$path: $!";
		1094
		1095	my $source = do { local $/; <$fh> };
		1096
		1097	my %ext = (
		1098	path => $path,
		1099	base => $base,
		1100	pkg => $pkg,
		1101	);
		1102
		1103	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1104	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1105
		1106	$ext{source} =
		1107	"package $pkg; use strict; use utf8;\n"
		1108	. "#line 1 \"$path\"\n{\n"
		1109	. $source
		1110	. "\n};\n1";
		1111
		1112	$todo{$base} = \%ext;
		1113	}
		1114
		1115	my %done;
		1116	while (%todo) {
		1117	my $progress;
		1118
		1119	while (my ($k, $v) = each %todo) {
		1120	for (split /,\s*/, $v->{meta}{depends}) {
		1121	goto skip
		1122	unless exists $done{$_};
		1123	}
		1124
		1125	warn "... loading '$k' into '$v->{pkg}'\n";
		1126
		1127	unless (eval $v->{source}) {
		1128	my $msg = $@ ? "$v->{path}: $@\n"
		1129	: "$v->{base}: extension inactive.\n";
		1130
		1131	if (exists $v->{meta}{mandatory}) {
		1132	warn $msg;
		1133	warn "mandatory extension failed to load, exiting.\n";
		1134	exit 1;
		1135	}
		1136
		1137	warn $msg;
		1138	}
		1139
		1140	$done{$k} = delete $todo{$k};
		1141	push @EXTS, $v->{pkg};
		1142	$progress = 1;
		1143	}
		1144
		1145	skip:
		1146	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1147	unless $progress;
		1148	}
		1149	};
		1150	}
		1151
		1152	#############################################################################
		1153
		1154	=back
		1155
		1156	=head2 CORE EXTENSIONS
		1157
		1158	Functions and methods that extend core crossfire objects.
		1159
		1160	=cut
		1161
		1162	package cf::player;
		1163
		1164	use Coro::AIO;
		1165
		1166	=head3 cf::player
		1167
		1168	=over 4
		1169
		1170	=item cf::player::find $login
		1171
		1172	Returns the given player object, loading it if necessary (might block).
		1173
		1174	=cut
		1175
		1176	sub playerdir($) {
		1177	"$PLAYERDIR/"
		1178	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1179	}
		1180
		1181	sub path($) {
		1182	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1183
		1184	(playerdir $login) . "/playerdata"
		1185	}
		1186
		1187	sub find_active($) {
		1188	$cf::PLAYER{$_[0]}
		1189	and $cf::PLAYER{$_[0]}->active
		1190	and $cf::PLAYER{$_[0]}
		1191	}
		1192
		1193	sub exists($) {
		1194	my ($login) = @_;
		1195
		1196	$cf::PLAYER{$login}
		1197	or cf::sync_job { !aio_stat path $login }
		1198	}
		1199
		1200	sub find($) {
		1201	return $cf::PLAYER{$_[0]} || do {
		1202	my $login = $_[0];
		1203
		1204	my $guard = cf::lock_acquire "user_find:$login";
		1205
		1206	$cf::PLAYER{$_[0]} || do {
		1207	# rename old playerfiles to new ones
		1208	#TODO: remove when no longer required
		1209	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1210	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1211	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1212	aio_unlink +(playerdir $login) . "/$login.pl";
		1213
		1214	my $pl = load_pl path $login
		1215	or return;
		1216	$cf::PLAYER{$login} = $pl
		1217	}
		1218	}
		1219	}
		1220
		1221	sub save($) {
		1222	my ($pl) = @_;
		1223
		1224	return if $pl->{deny_save};
		1225
		1226	my $path = path $pl;
		1227	my $guard = cf::lock_acquire "user_save:$path";
		1228
		1229	return if $pl->{deny_save};
		1230
		1231	aio_mkdir playerdir $pl, 0770;
		1232	$pl->{last_save} = $cf::RUNTIME;
		1233
		1234	$pl->save_pl ($path);
		1235	Coro::cede;
		1236	}
		1237
		1238	sub new($) {
		1239	my ($login) = @_;
		1240
		1241	my $self = create;
		1242
		1243	$self->ob->name ($login);
		1244	$self->{deny_save} = 1;
		1245
		1246	$cf::PLAYER{$login} = $self;
		1247
		1248	$self
		1249	}
		1250
		1251	=item $pl->quit_character
		1252
		1253	Nukes the player without looking back. If logged in, the connection will
		1254	be destroyed. May block for a long time.
		1255
		1256	=cut
		1257
		1258	sub quit_character {
		1259	my ($pl) = @_;
		1260
		1261	my $name = $pl->ob->name;
		1262
		1263	$pl->{deny_save} = 1;
		1264	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1265
		1266	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1267	$pl->deactivate;
		1268	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1269	$pl->ns->destroy if $pl->ns;
		1270
		1271	my $path = playerdir $pl;
		1272	my $temp = "$path~$cf::RUNTIME~deleting~";
		1273	aio_rename $path, $temp;
		1274	delete $cf::PLAYER{$pl->ob->name};
		1275	$pl->destroy;
		1276
		1277	my $prefix = qr<^~\Q$name\E/>;
		1278
		1279	# nuke player maps
		1280	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1281
		1282	IO::AIO::aio_rmtree $temp;
		1283	}
		1284
		1285	=item $pl->kick
		1286
		1287	Kicks a player out of the game. This destroys the connection.
		1288
		1289	=cut
		1290
		1291	sub kick {
		1292	my ($pl, $kicker) = @_;
		1293
		1294	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1295	$pl->killer ("kicked");
		1296	$pl->ns->destroy;
		1297	}
		1298
		1299	=item cf::player::list_logins
		1300
		1301	Returns am arrayref of all valid playernames in the system, can take a
		1302	while and may block, so not sync_job-capable, ever.
		1303
		1304	=cut
		1305
		1306	sub list_logins {
		1307	my $dirs = aio_readdir $PLAYERDIR
		1308	or return [];
		1309
		1310	my @logins;
		1311
		1312	for my $login (@$dirs) {
		1313	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1314	aio_read $fh, 0, 512, my $buf, 0 or next;
		1315	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1316
		1317	utf8::decode $login;
		1318	push @logins, $login;
		1319	}
		1320
		1321	\@logins
		1322	}
		1323
		1324	=item $player->maps
		1325
		1326	Returns an arrayref of map paths that are private for this
		1327	player. May block.
		1328
		1329	=cut
		1330
		1331	sub maps($) {
		1332	my ($pl) = @_;
		1333
		1334	$pl = ref $pl ? $pl->ob->name : $pl;
		1335
		1336	my $files = aio_readdir playerdir $pl
		1337	or return;
		1338
		1339	my @paths;
		1340
		1341	for (@$files) {
		1342	utf8::decode $_;
		1343	next if /\.(?:pl|pst)$/;
		1344	next unless /^$PATH_SEP/o;
		1345
		1346	push @paths, cf::map::normalise "~$pl/$_";
		1347	}
		1348
		1349	\@paths
		1350	}
		1351
		1352	=item $player->ext_reply ($msgid, %msg)
		1353
		1354	Sends an ext reply to the player.
		1355
		1356	=cut
		1357
		1358	sub ext_reply($$%) {
		1359	my ($self, $id, %msg) = @_;
		1360
		1361	$msg{msgid} = $id;
		1362
		1363	$self->send ("ext " . cf::to_json \%msg);
		1364	}
		1365
		1366	=item $player->ext_event ($type, %msg)
		1367
		1368	Sends an ext event to the client.
		1369
		1370	=cut
		1371
		1372	sub ext_event($$%) {
		1373	my ($self, $type, %msg) = @_;
		1374
		1375	$self->ns->ext_event ($type, %msg);
		1376	}
		1377
		1378	=head3 cf::region
		1379
		1380	=over 4
		1381
		1382	=cut
		1383
		1384	package cf::region;
		1385
		1386	=item cf::region::find_by_path $path
		1387
		1388	Tries to decuce the likely region for a map knowing only its path.
		1389
		1390	=cut
		1391
		1392	sub find_by_path($) {
955	my ($path) = @_;	1393	my ($path) = @_;
956		1394
957	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1395	my ($match, $specificity);
958	my $base = $1;
959	my $pkg = $1;
960	$pkg =~ s/[^[:word:]]/_/g;
961	$pkg = "ext::$pkg";
962		1396
963	warn "loading '$path' into '$pkg'\n";	1397	for my $region (list) {
964		1398	if ($region->match && $path =~ $region->match) {
965	open my $fh, "<:utf8", $path	1399	($match, $specificity) = ($region, $region->specificity)
966	or die "$path: $!";	1400	if $region->specificity > $specificity;
967		1401	}
968	my $source =
969	"package $pkg; use strict; use utf8;\n"
970	. "#line 1 \"$path\"\n{\n"
971	. (do { local $/; <$fh> })
972	. "\n};\n1";
973
974	eval $source
975	or die $@ ? "$path: $@\n"
976	: "extension disabled.\n";
977
978	push @exts, $pkg;
979	$ext_pkg{$base} = $pkg;
980
981	# no strict 'refs';
982	# @{"$pkg\::ISA"} = ext::;
983
984	register $base, $pkg;
985	}
986
987	sub unload_extension {
988	my ($pkg) = @_;
989
990	warn "removing extension $pkg\n";
991
992	# remove hooks
993	#TODO
994	# for my $idx (0 .. $#PLUGIN_EVENT) {
995	# delete $hook[$idx]{$pkg};
996	# }	1402	}
997		1403
998	# remove commands	1404	$match
999	for my $name (keys %COMMAND) {
1000	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
1001
1002	if (@cb) {
1003	$COMMAND{$name} = \@cb;
1004	} else {
1005	delete $COMMAND{$name};
1006	}
1007	}
1008
1009	# remove extcmds
1010	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
1011	delete $EXTCMD{$name};
1012	}
1013
1014	if (my $cb = $pkg->can ("unload")) {
1015	eval {
1016	$cb->($pkg);
1017	1
1018	} or warn "$pkg unloaded, but with errors: $@";
1019	}
1020
1021	Symbol::delete_package $pkg;
1022	}
1023
1024	sub load_extensions {
1025	for my $ext (<$LIBDIR/*.ext>) {
1026	next unless -r $ext;
1027	eval {
1028	load_extension $ext;
1029	1
1030	} or warn "$ext not loaded: $@";
1031	}
1032	}
1033
1034	#############################################################################
1035	# load/save/clean perl data associated with a map
1036
1037	*cf::mapsupport::on_clean = sub {
1038	my ($map) = @_;
1039
1040	my $path = $map->tmpname;
1041	defined $path or return;
1042
1043	unlink "$path.pst";
1044	};
1045
1046	cf::map->attach (prio => -10000, package => cf::mapsupport::);
1047
1048	#############################################################################
1049	# load/save perl data associated with player->ob objects
1050
1051	sub all_objects(@) {
1052	@_, map all_objects ($_->inv), @_
1053	}
1054
1055	# TODO: compatibility cruft, remove when no longer needed
1056	cf::player->attach (
1057	on_load => sub {
1058	my ($pl, $path) = @_;
1059
1060	for my $o (all_objects $pl->ob) {
1061	if (my $value = $o->get_ob_key_value ("_perl_data")) {
1062	$o->set_ob_key_value ("_perl_data");
1063
1064	%$o = %{ Storable::thaw pack "H*", $value };
1065	}
1066	}
1067	},
1068	);
1069
1070	#############################################################################
1071
1072	=head2 CORE EXTENSIONS
1073
1074	Functions and methods that extend core crossfire objects.
1075
1076	=head3 cf::player
1077
1078	=over 4
1079
1080	=item cf::player::exists $login
1081
1082	Returns true when the given account exists.
1083
1084	=cut
1085
1086	sub cf::player::exists($) {
1087	cf::player::find $_[0]
1088	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
1089	}
1090
1091	=item $player->ext_reply ($msgid, $msgtype, %msg)
1092
1093	Sends an ext reply to the player.
1094
1095	=cut
1096
1097	sub cf::player::ext_reply($$$%) {
1098	my ($self, $id, %msg) = @_;
1099
1100	$msg{msgid} = $id;
1101
1102	$self->send ("ext " . to_json \%msg);
1103	}	1405	}
1104		1406
1105	=back	1407	=back
1106
1107		1408
1108	=head3 cf::map	1409	=head3 cf::map
1109		1410
1110	=over 4	1411	=over 4
1111		1412
…		…
1114	package cf::map;	1415	package cf::map;
1115		1416
1116	use Fcntl;	1417	use Fcntl;
1117	use Coro::AIO;	1418	use Coro::AIO;
1118		1419
		1420	use overload
		1421	'""' => \&as_string,
		1422	fallback => 1;
		1423
1119	our $MAX_RESET = 3600;	1424	our $MAX_RESET = 3600;
1120	our $DEFAULT_RESET = 3000;	1425	our $DEFAULT_RESET = 3000;
1121		1426
1122	sub generate_random_map {	1427	sub generate_random_map {
1123	my ($path, $rmp) = @_;	1428	my ($self, $rmp) = @_;
1124
1125	# mit "rum" bekleckern, nicht	1429	# mit "rum" bekleckern, nicht
1126	cf::map::_create_random_map	1430	$self->_create_random_map (
1127	$path,
1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},	1431	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},	1432	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},	1433	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1131	$rmp->{exit_on_final_map},	1434	$rmp->{exit_on_final_map},
1132	$rmp->{xsize}, $rmp->{ysize},	1435	$rmp->{xsize}, $rmp->{ysize},
1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},	1436	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},	1437	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},	1438	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},	1439	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},	1440	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1138	(cf::region::find $rmp->{region})	1441	(cf::region::find $rmp->{region}), $rmp->{custom}
		1442	)
		1443	}
		1444
		1445	=item cf::map->register ($regex, $prio)
		1446
		1447	Register a handler for the map path matching the given regex at the
		1448	givne priority (higher is better, built-in handlers have priority 0, the
		1449	default).
		1450
		1451	=cut
		1452
		1453	sub register {
		1454	my (undef, $regex, $prio) = @_;
		1455	my $pkg = caller;
		1456
		1457	no strict;
		1458	push @{"$pkg\::ISA"}, __PACKAGE__;
		1459
		1460	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1461	}
		1462
		1463	# also paths starting with '/'
		1464	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1465
		1466	sub thawer_merge {
		1467	my ($self, $merge) = @_;
		1468
		1469	# we have to keep some variables in memory intact
		1470	local $self->{path};
		1471	local $self->{load_path};
		1472
		1473	$self->SUPER::thawer_merge ($merge);
		1474	}
		1475
		1476	sub normalise {
		1477	my ($path, $base) = @_;
		1478
		1479	$path = "$path"; # make sure its a string
		1480
		1481	$path =~ s/\.map$//;
		1482
		1483	# map plan:
		1484	#
		1485	# /! non-realised random map exit (special hack!)
		1486	# {... are special paths that are not being touched
		1487	# ?xxx/... are special absolute paths
		1488	# ?random/... random maps
		1489	# /... normal maps
		1490	# ~user/... per-player map of a specific user
		1491
		1492	$path =~ s/$PATH_SEP/\//go;
		1493
		1494	# treat it as relative path if it starts with
		1495	# something that looks reasonable
		1496	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1497	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1498
		1499	$base =~ s{[^/]+/?$}{};
		1500	$path = "$base/$path";
		1501	}
		1502
		1503	for ($path) {
		1504	redo if s{//}{/};
		1505	redo if s{/\.?/}{/};
		1506	redo if s{/[^/]+/\.\./}{/};
		1507	}
		1508
		1509	$path
		1510	}
		1511
		1512	sub new_from_path {
		1513	my (undef, $path, $base) = @_;
		1514
		1515	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1516
		1517	$path = normalise $path, $base;
		1518
		1519	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1520	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1521	my $self = bless cf::map::new, $pkg;
		1522	$self->{path} = $path; $self->path ($path);
		1523	$self->init; # pass $1 etc.
		1524	return $self;
		1525	}
		1526	}
		1527
		1528	Carp::carp "unable to resolve path '$path' (base '$base').";
		1529	()
		1530	}
		1531
		1532	sub init {
		1533	my ($self) = @_;
		1534
		1535	$self
		1536	}
		1537
		1538	sub as_string {
		1539	my ($self) = @_;
		1540
		1541	"$self->{path}"
		1542	}
		1543
		1544	# the displayed name, this is a one way mapping
		1545	sub visible_name {
		1546	&as_string
		1547	}
		1548
		1549	# the original (read-only) location
		1550	sub load_path {
		1551	my ($self) = @_;
		1552
		1553	"$MAPDIR/$self->{path}.map"
		1554	}
		1555
		1556	# the temporary/swap location
		1557	sub save_path {
		1558	my ($self) = @_;
		1559
		1560	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1561	"$TMPDIR/$path.map"
		1562	}
		1563
		1564	# the unique path, undef == no special unique path
		1565	sub uniq_path {
		1566	my ($self) = @_;
		1567
		1568	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1569	"$UNIQUEDIR/$path"
1139	}	1570	}
1140		1571
1141	# and all this just because we cannot iterate over	1572	# and all this just because we cannot iterate over
1142	# all maps in C++...	1573	# all maps in C++...
1143	sub change_all_map_light {	1574	sub change_all_map_light {
…		…
1145		1576
1146	$_->change_map_light ($change)	1577	$_->change_map_light ($change)
1147	for grep $_->outdoor, values %cf::MAP;	1578	for grep $_->outdoor, values %cf::MAP;
1148	}	1579	}
1149		1580
		1581	sub decay_objects {
		1582	my ($self) = @_;
		1583
		1584	return if $self->{deny_reset};
		1585
		1586	$self->do_decay_objects;
		1587	}
		1588
		1589	sub unlink_save {
		1590	my ($self) = @_;
		1591
		1592	utf8::encode (my $save = $self->save_path);
		1593	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1594	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1595	}
		1596
1150	sub try_load_header($) {	1597	sub load_header_from($) {
1151	my ($path) = @_;	1598	my ($self, $path) = @_;
1152		1599
1153	utf8::encode $path;	1600	utf8::encode $path;
1154	aio_open $path, O_RDONLY, 0	1601	#aio_open $path, O_RDONLY, 0
		1602	# or return;
		1603
		1604	$self->_load_header ($path)
1155	or return;	1605	or return;
1156		1606
1157	my $map = cf::map::new	1607	$self->{load_path} = $path;
		1608
		1609	1
		1610	}
		1611
		1612	sub load_header_orig {
		1613	my ($self) = @_;
		1614
		1615	$self->load_header_from ($self->load_path)
		1616	}
		1617
		1618	sub load_header_temp {
		1619	my ($self) = @_;
		1620
		1621	$self->load_header_from ($self->save_path)
		1622	}
		1623
		1624	sub prepare_temp {
		1625	my ($self) = @_;
		1626
		1627	$self->last_access ((delete $self->{last_access})
		1628	|| $cf::RUNTIME); #d#
		1629	# safety
		1630	$self->{instantiate_time} = $cf::RUNTIME
		1631	if $self->{instantiate_time} > $cf::RUNTIME;
		1632	}
		1633
		1634	sub prepare_orig {
		1635	my ($self) = @_;
		1636
		1637	$self->{load_original} = 1;
		1638	$self->{instantiate_time} = $cf::RUNTIME;
		1639	$self->last_access ($cf::RUNTIME);
		1640	$self->instantiate;
		1641	}
		1642
		1643	sub load_header {
		1644	my ($self) = @_;
		1645
		1646	if ($self->load_header_temp) {
		1647	$self->prepare_temp;
		1648	} else {
		1649	$self->load_header_orig
1158	or return;	1650	or return;
		1651	$self->prepare_orig;
		1652	}
1159		1653
1160	# for better error messages only, will be overwritten	1654	$self->{deny_reset} = 1
1161	$map->path ($path);	1655	if $self->no_reset;
1162		1656
1163	$map->load_header ($path)	1657	$self->default_region (cf::region::find_by_path $self->{path})
1164	or return;	1658	unless $self->default_region;
1165		1659
1166	$map->{load_path} = $path;	1660	1
1167
1168	$map
1169	}	1661	}
1170		1662
1171	sub find;	1663	sub find;
1172	sub find {	1664	sub find {
1173	my ($path, $origin) = @_;	1665	my ($path, $origin) = @_;
1174		1666
1175	#warn "find<$path,$origin>\n";#d#
1176
1177	$path = new cf::path $path, $origin && $origin->path;	1667	$path = normalise $path, $origin && $origin->path;
1178	my $key = $path->as_string;
1179		1668
1180	cf::lock_wait "map_find:$key";	1669	cf::lock_wait "map_find:$path";
1181		1670
1182	$cf::MAP{$key} || do {	1671	$cf::MAP{$path} || do {
1183	my $guard = cf::lock_acquire "map_find:$key";	1672	my $guard = cf::lock_acquire "map_find:$path";
1184		1673	my $map = new_from_path cf::map $path
1185	# do it the slow way
1186	my $map = try_load_header $path->save_path;
1187
1188	Coro::cede;
1189
1190	if ($map) {
1191	$map->last_access ((delete $map->{last_access})
1192	|| $cf::RUNTIME); #d#
1193	# safety
1194	$map->{instantiate_time} = $cf::RUNTIME
1195	if $map->{instantiate_time} > $cf::RUNTIME;
1196	} else {
1197	if (my $rmp = $path->random_map_params) {
1198	$map = generate_random_map $key, $rmp;
1199	} else {
1200	$map = try_load_header $path->load_path;
1201	}
1202
1203	$map or return;	1674	or return;
1204		1675
1205	$map->{load_original} = 1;
1206	$map->{instantiate_time} = $cf::RUNTIME;
1207	$map->last_access ($cf::RUNTIME);
1208	$map->instantiate;
1209
1210	# per-player maps become, after loading, normal maps
1211	$map->per_player (0) if $path->{user_rel};
1212	}
1213
1214	$map->path ($key);
1215	$map->{path} = $path;
1216	$map->{last_save} = $cf::RUNTIME;	1676	$map->{last_save} = $cf::RUNTIME;
1217		1677
1218	Coro::cede;	1678	$map->load_header
		1679	or return;
1219		1680
1220	if ($map->should_reset) {	1681	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1682	# doing this can freeze the server in a sync job, obviously
		1683	#$cf::WAIT_FOR_TICK->wait;
1221	$map->reset;	1684	$map->reset;
1222	undef $guard;	1685	undef $guard;
1223	$map = find $path	1686	return find $path;
1224	or return;
1225	}	1687	}
1226		1688
1227	$cf::MAP{$key} = $map	1689	$cf::MAP{$path} = $map
1228	}	1690	}
1229	}	1691	}
		1692
		1693	sub pre_load { }
		1694	sub post_load { }
1230		1695
1231	sub load {	1696	sub load {
1232	my ($self) = @_;	1697	my ($self) = @_;
1233		1698
		1699	local $self->{deny_reset} = 1; # loading can take a long time
		1700
1234	my $path = $self->{path};	1701	my $path = $self->{path};
		1702
		1703	{
1235	my $guard = cf::lock_acquire "map_load:" . $path->as_string;	1704	my $guard = cf::lock_acquire "map_load:$path";
1236		1705
1237	return if $self->in_memory != cf::MAP_SWAPPED;	1706	return if $self->in_memory != cf::MAP_SWAPPED;
1238		1707
1239	$self->in_memory (cf::MAP_LOADING);	1708	$self->in_memory (cf::MAP_LOADING);
1240		1709
1241	$self->alloc;	1710	$self->alloc;
		1711
		1712	$self->pre_load;
		1713	Coro::cede;
		1714
1242	$self->load_objects ($self->{load_path}, 1)	1715	$self->_load_objects ($self->{load_path}, 1)
1243	or return;	1716	or return;
1244		1717
1245	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)	1718	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1246	if delete $self->{load_original};	1719	if delete $self->{load_original};
1247		1720
1248	if (my $uniq = $path->uniq_path) {	1721	if (my $uniq = $self->uniq_path) {
1249	utf8::encode $uniq;	1722	utf8::encode $uniq;
1250	if (aio_open $uniq, O_RDONLY, 0) {	1723	if (aio_open $uniq, O_RDONLY, 0) {
1251	$self->clear_unique_items;	1724	$self->clear_unique_items;
1252	$self->load_objects ($uniq, 0);	1725	$self->_load_objects ($uniq, 0);
1253	}	1726	}
1254	}	1727	}
1255		1728
1256	Coro::cede;	1729	Coro::cede;
1257
1258	# now do the right thing for maps	1730	# now do the right thing for maps
1259	$self->link_multipart_objects;	1731	$self->link_multipart_objects;
1260
1261	if ($self->{path}->is_style_map) {
1262	$self->{deny_save} = 1;
1263	$self->{deny_reset} = 1;
1264	} else {
1265	$self->fix_auto_apply;
1266	$self->decay_objects;
1267	$self->update_buttons;
1268	$self->set_darkness_map;
1269	$self->difficulty ($self->estimate_difficulty)	1732	$self->difficulty ($self->estimate_difficulty)
1270	unless $self->difficulty;	1733	unless $self->difficulty;
		1734	Coro::cede;
		1735
		1736	unless ($self->{deny_activate}) {
		1737	$self->decay_objects;
		1738	$self->fix_auto_apply;
		1739	$self->update_buttons;
		1740	Coro::cede;
		1741	$self->set_darkness_map;
		1742	Coro::cede;
1271	$self->activate;	1743	$self->activate;
1272	}	1744	}
1273		1745
1274	Coro::cede;
1275
1276	$self->in_memory (cf::MAP_IN_MEMORY);	1746	$self->in_memory (cf::MAP_IN_MEMORY);
		1747	}
		1748
		1749	$self->post_load;
		1750	}
		1751
		1752	sub customise_for {
		1753	my ($self, $ob) = @_;
		1754
		1755	return find "~" . $ob->name . "/" . $self->{path}
		1756	if $self->per_player;
		1757
		1758	# return find "?party/" . $ob->name . "/" . $self->{path}
		1759	# if $self->per_party;
		1760
		1761	$self
		1762	}
		1763
		1764	# find and load all maps in the 3x3 area around a map
		1765	sub load_diag {
		1766	my ($map) = @_;
		1767
		1768	my @diag; # diagonal neighbours
		1769
		1770	for (0 .. 3) {
		1771	my $neigh = $map->tile_path ($_)
		1772	or next;
		1773	$neigh = find $neigh, $map
		1774	or next;
		1775	$neigh->load;
		1776
		1777	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1778	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1779	}
		1780
		1781	for (@diag) {
		1782	my $neigh = find @$_
		1783	or next;
		1784	$neigh->load;
		1785	}
1277	}	1786	}
1278		1787
1279	sub find_sync {	1788	sub find_sync {
1280	my ($path, $origin) = @_;	1789	my ($path, $origin) = @_;
1281		1790
1282	cf::sync_job { cf::map::find $path, $origin }	1791	cf::sync_job { find $path, $origin }
1283	}	1792	}
1284		1793
1285	sub do_load_sync {	1794	sub do_load_sync {
1286	my ($map) = @_;	1795	my ($map) = @_;
1287		1796
1288	cf::sync_job { $map->load };	1797	cf::sync_job { $map->load };
1289	}	1798	}
1290		1799
		1800	our %MAP_PREFETCH;
		1801	our $MAP_PREFETCHER = undef;
		1802
		1803	sub find_async {
		1804	my ($path, $origin) = @_;
		1805
		1806	$path = normalise $path, $origin && $origin->{path};
		1807
		1808	if (my $map = $cf::MAP{$path}) {
		1809	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1810	}
		1811
		1812	undef $MAP_PREFETCH{$path};
		1813	$MAP_PREFETCHER ||= cf::async {
		1814	while (%MAP_PREFETCH) {
		1815	for my $path (keys %MAP_PREFETCH) {
		1816	my $map = find $path
		1817	or next;
		1818	$map->load;
		1819
		1820	delete $MAP_PREFETCH{$path};
		1821	}
		1822	}
		1823	undef $MAP_PREFETCHER;
		1824	};
		1825	$MAP_PREFETCHER->prio (6);
		1826
		1827	()
		1828	}
		1829
1291	sub save {	1830	sub save {
1292	my ($self) = @_;	1831	my ($self) = @_;
1293		1832
1294	my $lock = cf::lock_acquire "map_data:" . $self->path;	1833	my $lock = cf::lock_acquire "map_data:" . $self->path;
1295		1834
1296	$self->{last_save} = $cf::RUNTIME;	1835	$self->{last_save} = $cf::RUNTIME;
1297		1836
1298	return unless $self->dirty;	1837	return unless $self->dirty;
1299		1838
1300	my $save = $self->{path}->save_path; utf8::encode $save;	1839	my $save = $self->save_path; utf8::encode $save;
1301	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;	1840	my $uniq = $self->uniq_path; utf8::encode $uniq;
1302		1841
1303	$self->{load_path} = $save;	1842	$self->{load_path} = $save;
1304		1843
1305	return if $self->{deny_save};	1844	return if $self->{deny_save};
1306		1845
1307	local $self->{last_access} = $self->last_access;#d#	1846	local $self->{last_access} = $self->last_access;#d#
1308		1847
		1848	cf::async {
		1849	$_->contr->save for $self->players;
		1850	};
		1851
1309	if ($uniq) {	1852	if ($uniq) {
1310	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);	1853	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1311	$self->save_objects ($uniq, cf::IO_UNIQUES);	1854	$self->_save_objects ($uniq, cf::IO_UNIQUES);
1312	} else {	1855	} else {
1313	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);	1856	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1314	}	1857	}
1315	}	1858	}
1316		1859
1317	sub swap_out {	1860	sub swap_out {
1318	my ($self) = @_;	1861	my ($self) = @_;
…		…
1332		1875
1333	sub reset_at {	1876	sub reset_at {
1334	my ($self) = @_;	1877	my ($self) = @_;
1335		1878
1336	# TODO: safety, remove and allow resettable per-player maps	1879	# TODO: safety, remove and allow resettable per-player maps
1337	return 1e99 if $self->{path}{user_rel};
1338	return 1e99 if $self->{deny_reset};	1880	return 1e99 if $self->{deny_reset};
1339		1881
1340	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1882	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1341	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	1883	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1342		1884
…		…
1347	my ($self) = @_;	1889	my ($self) = @_;
1348		1890
1349	$self->reset_at <= $cf::RUNTIME	1891	$self->reset_at <= $cf::RUNTIME
1350	}	1892	}
1351		1893
1352	sub unlink_save {
1353	my ($self) = @_;
1354
1355	utf8::encode (my $save = $self->{path}->save_path);
1356	aioreq_pri 3; IO::AIO::aio_unlink $save;
1357	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
1358	}
1359
1360	sub rename {
1361	my ($self, $new_path) = @_;
1362
1363	$self->unlink_save;
1364
1365	delete $cf::MAP{$self->path};
1366	$self->{path} = new cf::path $new_path;
1367	$self->path ($self->{path}->as_string);
1368	$cf::MAP{$self->path} = $self;
1369
1370	$self->save;
1371	}
1372
1373	sub reset {	1894	sub reset {
1374	my ($self) = @_;	1895	my ($self) = @_;
1375		1896
1376	my $lock = cf::lock_acquire "map_data:" . $self->path;	1897	my $lock = cf::lock_acquire "map_data:$self->{path}";
1377		1898
1378	return if $self->players;	1899	return if $self->players;
1379	return if $self->{path}{user_rel};#d#
1380		1900
1381	warn "resetting map ", $self->path;#d#	1901	warn "resetting map ", $self->path;
		1902
		1903	$self->in_memory (cf::MAP_SWAPPED);
		1904
		1905	# need to save uniques path
		1906	unless ($self->{deny_save}) {
		1907	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1908
		1909	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1910	if $uniq;
		1911	}
1382		1912
1383	delete $cf::MAP{$self->path};	1913	delete $cf::MAP{$self->path};
		1914
		1915	$self->clear;
1384		1916
1385	$_->clear_links_to ($self) for values %cf::MAP;	1917	$_->clear_links_to ($self) for values %cf::MAP;
1386		1918
1387	$self->unlink_save;	1919	$self->unlink_save;
1388	$self->destroy;	1920	$self->destroy;
…		…
1391	my $nuke_counter = "aaaa";	1923	my $nuke_counter = "aaaa";
1392		1924
1393	sub nuke {	1925	sub nuke {
1394	my ($self) = @_;	1926	my ($self) = @_;
1395		1927
		1928	delete $cf::MAP{$self->path};
		1929
		1930	$self->unlink_save;
		1931
		1932	bless $self, "cf::map";
		1933	delete $self->{deny_reset};
1396	$self->{deny_save} = 1;	1934	$self->{deny_save} = 1;
1397	$self->reset_timeout (1);	1935	$self->reset_timeout (1);
1398	$self->rename ("{nuke}/" . ($nuke_counter++));	1936	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1937
		1938	$cf::MAP{$self->path} = $self;
		1939
1399	$self->reset; # polite request, might not happen	1940	$self->reset; # polite request, might not happen
1400	}	1941	}
1401		1942
1402	sub customise_for {	1943	=item $maps = cf::map::tmp_maps
1403	my ($map, $ob) = @_;
1404		1944
1405	if ($map->per_player) {	1945	Returns an arrayref with all map paths of currently instantiated and saved
1406	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};	1946	maps. May block.
		1947
		1948	=cut
		1949
		1950	sub tmp_maps() {
1407	}	1951	[
1408		1952	map {
1409	$map	1953	utf8::decode $_;
		1954	/\.map$/
		1955	? normalise $_
		1956	: ()
		1957	} @{ aio_readdir $TMPDIR or [] }
		1958	]
1410	}	1959	}
1411		1960
1412	sub emergency_save {	1961	=item $maps = cf::map::random_maps
1413	my $freeze_guard = cf::freeze_mainloop;
1414		1962
1415	warn "enter emergency map save\n";	1963	Returns an arrayref with all map paths of currently instantiated and saved
		1964	random maps. May block.
1416		1965
1417	cf::sync_job {	1966	=cut
1418	warn "begin emergency map save\n";
1419	$_->save for values %cf::MAP;
1420	};
1421		1967
1422	warn "end emergency map save\n";	1968	sub random_maps() {
		1969	[
		1970	map {
		1971	utf8::decode $_;
		1972	/\.map$/
		1973	? normalise "?random/$_"
		1974	: ()
		1975	} @{ aio_readdir $RANDOMDIR or [] }
		1976	]
		1977	}
		1978
		1979	=item cf::map::unique_maps
		1980
		1981	Returns an arrayref of paths of all shared maps that have
		1982	instantiated unique items. May block.
		1983
		1984	=cut
		1985
		1986	sub unique_maps() {
		1987	[
		1988	map {
		1989	utf8::decode $_;
		1990	/\.map$/
		1991	? normalise $_
		1992	: ()
		1993	} @{ aio_readdir $UNIQUEDIR or [] }
		1994	]
1423	}	1995	}
1424		1996
1425	package cf;	1997	package cf;
1426		1998
1427	=back	1999	=back
1428		2000
		2001	=head3 cf::object
		2002
		2003	=cut
		2004
		2005	package cf::object;
		2006
		2007	=over 4
		2008
		2009	=item $ob->inv_recursive
		2010
		2011	Returns the inventory of the object _and_ their inventories, recursively.
		2012
		2013	=cut
		2014
		2015	sub inv_recursive_;
		2016	sub inv_recursive_ {
		2017	map { $_, inv_recursive_ $_->inv } @_
		2018	}
		2019
		2020	sub inv_recursive {
		2021	inv_recursive_ inv $_[0]
		2022	}
		2023
		2024	package cf;
		2025
		2026	=back
1429		2027
1430	=head3 cf::object::player	2028	=head3 cf::object::player
1431		2029
1432	=over 4	2030	=over 4
1433		2031
…		…
1447		2045
1448	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2046	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1449		2047
1450	if ($self->{record_replies}) {	2048	if ($self->{record_replies}) {
1451	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2049	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2050
1452	} else {	2051	} else {
		2052	my $pl = $self->contr;
		2053
		2054	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2055	my $diag = $pl->{npc_dialog};
		2056	$diag->{pl}->ext_reply (
		2057	$diag->{id}, msgtype => "reply", msg => $msg, add_topics => []
		2058	);
		2059
		2060	} else {
1453	$msg = $npc->name . " says: $msg" if $npc;	2061	$msg = $npc->name . " says: $msg" if $npc;
1454	$self->message ($msg, $flags);	2062	$self->message ($msg, $flags);
		2063	}
1455	}	2064	}
1456	}	2065	}
1457		2066
1458	=item $player_object->may ("access")	2067	=item $player_object->may ("access")
1459		2068
…		…
1473		2082
1474	=item $player_object->enter_link	2083	=item $player_object->enter_link
1475		2084
1476	Freezes the player and moves him/her to a special map (C<{link}>).	2085	Freezes the player and moves him/her to a special map (C<{link}>).
1477		2086
1478	The player should be reaosnably safe there for short amounts of time. You	2087	The player should be reasonably safe there for short amounts of time. You
1479	I<MUST> call C<leave_link> as soon as possible, though.	2088	I<MUST> call C<leave_link> as soon as possible, though.
1480		2089
		2090	Will never block.
		2091
1481	=item $player_object->leave_link ($map, $x, $y)	2092	=item $player_object->leave_link ($map, $x, $y)
1482		2093
1483	Moves the player out of the specila link map onto the given map. If the	2094	Moves the player out of the special C<{link}> map onto the specified
1484	map is not valid (or omitted), the player will be moved back to the	2095	map. If the map is not valid (or omitted), the player will be moved back
1485	location he/she was before the call to C<enter_link>, or, if that fails,	2096	to the location he/she was before the call to C<enter_link>, or, if that
1486	to the emergency map position.	2097	fails, to the emergency map position.
1487		2098
1488	Might block.	2099	Might block.
1489		2100
1490	=cut	2101	=cut
		2102
		2103	sub link_map {
		2104	unless ($LINK_MAP) {
		2105	$LINK_MAP = cf::map::find "{link}"
		2106	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2107	$LINK_MAP->load;
		2108	}
		2109
		2110	$LINK_MAP
		2111	}
1491		2112
1492	sub cf::object::player::enter_link {	2113	sub cf::object::player::enter_link {
1493	my ($self) = @_;	2114	my ($self) = @_;
1494		2115
1495	$self->deactivate_recursive;	2116	$self->deactivate_recursive;
1496		2117
1497	return if $self->map == $LINK_MAP;	2118	return if UNIVERSAL::isa $self->map, "ext::map_link";
1498		2119
1499	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2120	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1500	if $self->map;	2121	if $self->map && $self->map->{path} ne "{link}";
1501		2122
1502	$self->enter_map ($LINK_MAP, 20, 20);	2123	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1503	}	2124	}
1504		2125
1505	sub cf::object::player::leave_link {	2126	sub cf::object::player::leave_link {
1506	my ($self, $map, $x, $y) = @_;	2127	my ($self, $map, $x, $y) = @_;
		2128
		2129	return unless $self->contr->active;
1507		2130
1508	my $link_pos = delete $self->{_link_pos};	2131	my $link_pos = delete $self->{_link_pos};
1509		2132
1510	unless ($map) {	2133	unless ($map) {
1511	# restore original map position	2134	# restore original map position
…		…
1525	# use -1 or undef as default coordinates, not 0, 0	2148	# use -1 or undef as default coordinates, not 0, 0
1526	($x, $y) = ($map->enter_x, $map->enter_y)	2149	($x, $y) = ($map->enter_x, $map->enter_y)
1527	if $x <=0 && $y <= 0;	2150	if $x <=0 && $y <= 0;
1528		2151
1529	$map->load;	2152	$map->load;
		2153	$map->load_diag;
1530		2154
		2155	return unless $self->contr->active;
1531	$self->activate_recursive;	2156	$self->activate_recursive;
		2157
		2158	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1532	$self->enter_map ($map, $x, $y);	2159	$self->enter_map ($map, $x, $y);
1533	}	2160	}
1534		2161
1535	cf::player->attach (
1536	on_logout => sub {
1537	my ($pl) = @_;
1538
1539	# abort map switching before logout
1540	if ($pl->ob->{_link_pos}) {
1541	cf::sync_job {
1542	$pl->ob->leave_link
1543	};
1544	}
1545	},
1546	on_login => sub {
1547	my ($pl) = @_;
1548
1549	# try to abort aborted map switching on player login :)
1550	# should happen only on crashes
1551	if ($pl->ob->{_link_pos}) {
1552
1553	$pl->ob->enter_link;
1554	(async {
1555	# we need this sleep as the login has a concurrent enter_exit running
1556	# and this sleep increases chances of the player not ending up in scorn
1557	$pl->ob->reply (undef,
1558	"There was an internal problem at your last logout, "
1559	. "the server will try to bring you to your intended destination in a second.",
1560	cf::NDI_RED);
1561	Coro::Timer::sleep 1;
1562	$pl->ob->leave_link;
1563	})->prio (2);
1564	}
1565	},
1566	);
1567
1568	=item $player_object->goto ($path, $x, $y)	2162	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1569		2163
		2164	Moves the player to the given map-path and coordinates by first freezing
		2165	her, loading and preparing them map, calling the provided $check callback
		2166	that has to return the map if sucecssful, and then unfreezes the player on
		2167	the new (success) or old (failed) map position.
		2168
1570	=cut	2169	=cut
		2170
		2171	our $GOTOGEN;
1571		2172
1572	sub cf::object::player::goto {	2173	sub cf::object::player::goto {
1573	my ($self, $path, $x, $y) = @_;	2174	my ($self, $path, $x, $y, $check) = @_;
		2175
		2176	# do generation counting so two concurrent goto's will be executed in-order
		2177	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1574		2178
1575	$self->enter_link;	2179	$self->enter_link;
1576		2180
1577	(async {	2181	(async {
1578	$path = new cf::path $path;	2182	my $map = eval {
1579
1580	my $map = cf::map::find $path->as_string;	2183	my $map = cf::map::find $path;
		2184
		2185	if ($map) {
1581	$map = $map->customise_for ($self) if $map;	2186	$map = $map->customise_for ($self);
1582		2187	$map = $check->($map) if $check && $map;
1583	# warn "entering ", $map->path, " at ($x, $y)\n"	2188	} else {
1584	# if $map;
1585
1586	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);	2189	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2190	}
1587		2191
		2192	$map
		2193	};
		2194
		2195	if ($@) {
		2196	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2197	LOG llevError | logBacktrace, Carp::longmess $@;
		2198	}
		2199
		2200	if ($gen == $self->{_goto_generation}) {
		2201	delete $self->{_goto_generation};
1588	$self->leave_link ($map, $x, $y);	2202	$self->leave_link ($map, $x, $y);
		2203	}
1589	})->prio (1);	2204	})->prio (1);
1590	}	2205	}
1591		2206
1592	=item $player_object->enter_exit ($exit_object)	2207	=item $player_object->enter_exit ($exit_object)
1593		2208
…		…
1595		2210
1596	sub parse_random_map_params {	2211	sub parse_random_map_params {
1597	my ($spec) = @_;	2212	my ($spec) = @_;
1598		2213
1599	my $rmp = { # defaults	2214	my $rmp = { # defaults
1600	xsize => 10,	2215	xsize => (cf::rndm 15, 40),
1601	ysize => 10,	2216	ysize => (cf::rndm 15, 40),
		2217	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2218	#layout => string,
1602	};	2219	};
1603		2220
1604	for (split /\n/, $spec) {	2221	for (split /\n/, $spec) {
1605	my ($k, $v) = split /\s+/, $_, 2;	2222	my ($k, $v) = split /\s+/, $_, 2;
1606		2223
…		…
1610	$rmp	2227	$rmp
1611	}	2228	}
1612		2229
1613	sub prepare_random_map {	2230	sub prepare_random_map {
1614	my ($exit) = @_;	2231	my ($exit) = @_;
		2232
		2233	my $guard = cf::lock_acquire "exit_prepare:$exit";
1615		2234
1616	# all this does is basically replace the /! path by	2235	# all this does is basically replace the /! path by
1617	# a new random map path (?random/...) with a seed	2236	# a new random map path (?random/...) with a seed
1618	# that depends on the exit object	2237	# that depends on the exit object
1619		2238
1620	my $rmp = parse_random_map_params $exit->msg;	2239	my $rmp = parse_random_map_params $exit->msg;
1621		2240
1622	if ($exit->map) {	2241	if ($exit->map) {
1623	$rmp->{region} = $exit->map->region_name;	2242	$rmp->{region} = $exit->region->name;
1624	$rmp->{origin_map} = $exit->map->path;	2243	$rmp->{origin_map} = $exit->map->path;
1625	$rmp->{origin_x} = $exit->x;	2244	$rmp->{origin_x} = $exit->x;
1626	$rmp->{origin_y} = $exit->y;	2245	$rmp->{origin_y} = $exit->y;
1627	}	2246	}
1628		2247
1629	$rmp->{random_seed} ||= $exit->random_seed;	2248	$rmp->{random_seed} ||= $exit->random_seed;
1630		2249
1631	my $data = cf::to_json $rmp;	2250	my $data = cf::to_json $rmp;
1632	my $md5 = Digest::MD5::md5_hex $data;	2251	my $md5 = Digest::MD5::md5_hex $data;
		2252	my $meta = "$RANDOMDIR/$md5.meta";
1633		2253
1634	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {	2254	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1635	aio_write $fh, 0, (length $data), $data, 0;	2255	aio_write $fh, 0, (length $data), $data, 0;
		2256	undef $fh;
		2257	aio_rename "$meta~", $meta;
1636		2258
1637	$exit->slaying ("?random/$md5");	2259	$exit->slaying ("?random/$md5");
1638	$exit->msg (undef);	2260	$exit->msg (undef);
1639	}	2261	}
1640	}	2262	}
1641		2263
1642	sub cf::object::player::enter_exit {	2264	sub cf::object::player::enter_exit {
1643	my ($self, $exit) = @_;	2265	my ($self, $exit) = @_;
1644		2266
1645	return unless $self->type == cf::PLAYER;	2267	return unless $self->type == cf::PLAYER;
		2268
		2269	if ($exit->slaying eq "/!") {
		2270	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2271	# the problem is that $exit might not survive long enough
		2272	# so it needs to be done right now, right here
		2273	cf::sync_job { prepare_random_map $exit };
		2274	}
		2275
		2276	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2277	my $hp = $exit->stats->hp;
		2278	my $sp = $exit->stats->sp;
1646		2279
1647	$self->enter_link;	2280	$self->enter_link;
1648		2281
1649	(async {	2282	(async {
1650	$self->deactivate_recursive; # just to be sure	2283	$self->deactivate_recursive; # just to be sure
1651	unless (eval {	2284	unless (eval {
1652	prepare_random_map $exit	2285	$self->goto ($slaying, $hp, $sp);
1653	if $exit->slaying eq "/!";
1654
1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1656	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
1657		2286
1658	1;	2287	1;
1659	}) {	2288	}) {
1660	$self->message ("Something went wrong deep within the crossfire server. "	2289	$self->message ("Something went wrong deep within the crossfire server. "
1661	. "I'll try to bring you back to the map you were before. "	2290	. "I'll try to bring you back to the map you were before. "
1662	. "Please report this to the dungeon master",	2291	. "Please report this to the dungeon master!",
1663	cf::NDI_UNIQUE | cf::NDI_RED);	2292	cf::NDI_UNIQUE | cf::NDI_RED);
1664		2293
1665	warn "ERROR in enter_exit: $@";	2294	warn "ERROR in enter_exit: $@";
1666	$self->leave_link;	2295	$self->leave_link;
1667	}	2296	}
1668	})->prio (1);	2297	})->prio (1);
…		…
1681		2310
1682	sub cf::client::send_drawinfo {	2311	sub cf::client::send_drawinfo {
1683	my ($self, $text, $flags) = @_;	2312	my ($self, $text, $flags) = @_;
1684		2313
1685	utf8::encode $text;	2314	utf8::encode $text;
1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2315	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1687	}	2316	}
1688		2317
		2318	=item $client->ext_event ($type, %msg)
		2319
		2320	Sends an exti event to the client.
		2321
		2322	=cut
		2323
		2324	sub cf::client::ext_event($$%) {
		2325	my ($self, $type, %msg) = @_;
		2326
		2327	$msg{msgtype} = "event_$type";
		2328	$self->send_packet ("ext " . cf::to_json \%msg);
		2329	}
1689		2330
1690	=item $success = $client->query ($flags, "text", \&cb)	2331	=item $success = $client->query ($flags, "text", \&cb)
1691		2332
1692	Queues a query to the client, calling the given callback with	2333	Queues a query to the client, calling the given callback with
1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2334	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
1722	# get handled first	2363	# get handled first
1723	my $queue = delete $ns->{query_queue}	2364	my $queue = delete $ns->{query_queue}
1724	or return; # be conservative, not sure how that can happen, but we saw a crash here	2365	or return; # be conservative, not sure how that can happen, but we saw a crash here
1725		2366
1726	(shift @$queue)->[1]->($msg);	2367	(shift @$queue)->[1]->($msg);
		2368	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
1727		2369
1728	push @{ $ns->{query_queue} }, @$queue;	2370	push @{ $ns->{query_queue} }, @$queue;
1729		2371
1730	if (@{ $ns->{query_queue} } == @$queue) {	2372	if (@{ $ns->{query_queue} } == @$queue) {
1731	if (@$queue) {	2373	if (@$queue) {
…		…
1789		2431
1790	# here we export the classes and methods available to script code	2432	# here we export the classes and methods available to script code
1791		2433
1792	=pod	2434	=pod
1793		2435
1794	The following fucntions and emthods are available within a safe environment:	2436	The following functions and methods are available within a safe environment:
1795		2437
1796	cf::object contr pay_amount pay_player map	2438	cf::object contr pay_amount pay_player map
1797	cf::object::player player	2439	cf::object::player player
1798	cf::player peaceful	2440	cf::player peaceful
1799	cf::map trigger	2441	cf::map trigger
…		…
1880	=back	2522	=back
1881		2523
1882	=cut	2524	=cut
1883		2525
1884	#############################################################################	2526	#############################################################################
		2527	# the server's init and main functions
1885		2528
1886	=head2 EXTENSION DATABASE SUPPORT	2529	sub load_facedata($) {
		2530	my ($path) = @_;
1887		2531
1888	Crossfire maintains a very simple database for extension use. It can	2532	warn "loading facedata from $path\n";
1889	currently store anything that can be serialised using Storable, which
1890	excludes objects.
1891		2533
1892	The parameter C<$family> should best start with the name of the extension	2534	my $facedata;
1893	using it, it should be unique.	2535	0 < aio_load $path, $facedata
		2536	or die "$path: $!";
1894		2537
1895	=over 4	2538	$facedata = Coro::Storable::thaw $facedata;
1896		2539
1897	=item $hashref = cf::db_get $family	2540	$facedata->{version} == 2
		2541	or cf::cleanup "$path: version mismatch, cannot proceed.";
1898		2542
1899	Return a hashref for use by the extension C<$family>, which can be
1900	modified. After modifications, you have to call C<cf::db_dirty> or
1901	C<cf::db_sync>.
1902
1903	=item $value = cf::db_get $family => $key
1904
1905	Returns a single value from the database
1906
1907	=item cf::db_put $family => $hashref
1908
1909	Stores the given family hashref into the database. Updates are delayed, if
1910	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1911
1912	=item cf::db_put $family => $key => $value
1913
1914	Stores the given C<$value> in the family hash. Updates are delayed, if you
1915	want the data to be synced to disk immediately, use C<cf::db_sync>.
1916
1917	=item cf::db_dirty
1918
1919	Marks the database as dirty, to be updated at a later time.
1920
1921	=item cf::db_sync
1922
1923	Immediately write the database to disk I<if it is dirty>.
1924
1925	=cut
1926
1927	our $DB;
1928
1929	{
1930	my $path = cf::localdir . "/database.pst";
1931
1932	sub db_load() {
1933	$DB = stat $path ? Storable::retrieve $path : { };
1934	}	2543	{
		2544	my $faces = $facedata->{faceinfo};
1935		2545
1936	my $pid;	2546	while (my ($face, $info) = each %$faces) {
1937		2547	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1938	sub db_save() {	2548	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
1939	waitpid $pid, 0 if $pid;	2549	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
1940	if (0 == ($pid = fork)) {	2550	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1941	$DB->{_meta}{version} = 1;	2551	Coro::cede;
1942	Storable::nstore $DB, "$path~";
1943	rename "$path~", $path;
1944	cf::_exit 0 if defined $pid;
1945	}
1946	}
1947
1948	my $dirty;
1949
1950	sub db_sync() {
1951	db_save if $dirty;
1952	undef $dirty;
1953	}
1954
1955	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1956	db_sync;
1957	});
1958
1959	sub db_dirty() {
1960	$dirty = 1;
1961	$idle->start;
1962	}
1963
1964	sub db_get($;$) {
1965	@_ >= 2
1966	? $DB->{$_[0]}{$_[1]}
1967	: ($DB->{$_[0]} ||= { })
1968	}
1969
1970	sub db_put($$;$) {
1971	if (@_ >= 3) {
1972	$DB->{$_[0]}{$_[1]} = $_[2];
1973	} else {
1974	$DB->{$_[0]} = $_[1];
1975	}
1976	db_dirty;
1977	}
1978
1979	cf::global->attach (
1980	prio => 10000,
1981	on_cleanup => sub {
1982	db_sync;
1983	},	2552	}
1984	);
1985	}
1986		2553
1987	#############################################################################	2554	while (my ($face, $info) = each %$faces) {
1988	# the server's main()	2555	next unless $info->{smooth};
		2556	my $idx = cf::face::find $face
		2557	or next;
		2558	if (my $smooth = cf::face::find $info->{smooth}) {
		2559	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2560	} else {
		2561	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2562	}
		2563	Coro::cede;
		2564	}
		2565	}
		2566
		2567	{
		2568	my $anims = $facedata->{animinfo};
		2569
		2570	while (my ($anim, $info) = each %$anims) {
		2571	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2572	Coro::cede;
		2573	}
		2574
		2575	cf::anim::invalidate_all; # d'oh
		2576	}
		2577
		2578	1
		2579	}
		2580
		2581	sub reload_regions {
		2582	load_resource_file "$MAPDIR/regions"
		2583	or die "unable to load regions file\n";
		2584	}
		2585
		2586	sub reload_facedata {
		2587	load_facedata "$DATADIR/facedata"
		2588	or die "unable to load facedata\n";
		2589	}
		2590
		2591	sub reload_archetypes {
		2592	load_resource_file "$DATADIR/archetypes"
		2593	or die "unable to load archetypes\n";
		2594	}
		2595
		2596	sub reload_treasures {
		2597	load_resource_file "$DATADIR/treasures"
		2598	or die "unable to load treasurelists\n";
		2599	}
		2600
		2601	sub reload_resources {
		2602	warn "reloading resource files...\n";
		2603
		2604	reload_regions;
		2605	reload_facedata;
		2606	#reload_archetypes;#d#
		2607	reload_archetypes;
		2608	reload_treasures;
		2609
		2610	warn "finished reloading resource files\n";
		2611	}
		2612
		2613	sub init {
		2614	reload_resources;
		2615	}
1989		2616
1990	sub cfg_load {	2617	sub cfg_load {
1991	open my $fh, "<:utf8", cf::confdir . "/config"	2618	open my $fh, "<:utf8", "$CONFDIR/config"
1992	or return;	2619	or return;
1993		2620
1994	local $/;	2621	local $/;
1995	*CFG = YAML::Syck::Load <$fh>;	2622	*CFG = YAML::Syck::Load <$fh>;
1996		2623
…		…
1999	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};	2626	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2000	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};	2627	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
2001		2628
2002	if (exists $CFG{mlockall}) {	2629	if (exists $CFG{mlockall}) {
2003	eval {	2630	eval {
2004	$CFG{mlockall} ? &mlockall : &munlockall	2631	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2005	and die "WARNING: m(un)lockall failed: $!\n";	2632	and die "WARNING: m(un)lockall failed: $!\n";
2006	};	2633	};
2007	warn $@ if $@;	2634	warn $@ if $@;
2008	}	2635	}
2009	}	2636	}
2010		2637
2011	sub main {	2638	sub main {
2012	# we must not ever block the main coroutine	2639	# we must not ever block the main coroutine
2013	local $Coro::idle = sub {	2640	local $Coro::idle = sub {
2014	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#	2641	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2642	(async {
2015	async { Event::one_event };	2643	Event::one_event;
		2644	})->prio (Coro::PRIO_MAX);
2016	};	2645	};
2017		2646
2018	cfg_load;	2647	cfg_load;
2019	db_load;	2648	db_init;
2020	load_extensions;	2649	load_extensions;
		2650
		2651	$TICK_WATCHER->start;
2021	Event::loop;	2652	Event::loop;
2022	}	2653	}
2023		2654
2024	#############################################################################	2655	#############################################################################
2025	# initialisation	2656	# initialisation and cleanup
2026		2657
		2658	# install some emergency cleanup handlers
		2659	BEGIN {
		2660	for my $signal (qw(INT HUP TERM)) {
		2661	Event->signal (
		2662	reentrant => 0,
		2663	data => WF_AUTOCANCEL,
		2664	signal => $signal,
		2665	prio => 0,
		2666	cb => sub {
		2667	cf::cleanup "SIG$signal";
		2668	},
		2669	);
		2670	}
		2671	}
		2672
		2673	sub write_runtime {
		2674	my $runtime = "$LOCALDIR/runtime";
		2675
		2676	# first touch the runtime file to show we are still running:
		2677	# the fsync below can take a very very long time.
		2678
		2679	IO::AIO::aio_utime $runtime, undef, undef;
		2680
		2681	my $guard = cf::lock_acquire "write_runtime";
		2682
		2683	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2684	or return;
		2685
		2686	my $value = $cf::RUNTIME + 90 + 10;
		2687	# 10 is the runtime save interval, for a monotonic clock
		2688	# 60 allows for the watchdog to kill the server.
		2689
		2690	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2691	and return;
		2692
		2693	# always fsync - this file is important
		2694	aio_fsync $fh
		2695	and return;
		2696
		2697	# touch it again to show we are up-to-date
		2698	aio_utime $fh, undef, undef;
		2699
		2700	close $fh
		2701	or return;
		2702
		2703	aio_rename "$runtime~", $runtime
		2704	and return;
		2705
		2706	warn "runtime file written.\n";
		2707
		2708	1
		2709	}
		2710
		2711	sub emergency_save() {
		2712	my $freeze_guard = cf::freeze_mainloop;
		2713
		2714	warn "enter emergency perl save\n";
		2715
		2716	cf::sync_job {
		2717	# use a peculiar iteration method to avoid tripping on perl
		2718	# refcount bugs in for. also avoids problems with players
		2719	# and maps saved/destroyed asynchronously.
		2720	warn "begin emergency player save\n";
		2721	for my $login (keys %cf::PLAYER) {
		2722	my $pl = $cf::PLAYER{$login} or next;
		2723	$pl->valid or next;
		2724	$pl->save;
		2725	}
		2726	warn "end emergency player save\n";
		2727
		2728	warn "begin emergency map save\n";
		2729	for my $path (keys %cf::MAP) {
		2730	my $map = $cf::MAP{$path} or next;
		2731	$map->valid or next;
		2732	$map->save;
		2733	}
		2734	warn "end emergency map save\n";
		2735
		2736	warn "begin emergency database checkpoint\n";
		2737	BDB::db_env_txn_checkpoint $DB_ENV;
		2738	warn "end emergency database checkpoint\n";
		2739	};
		2740
		2741	warn "leave emergency perl save\n";
		2742	}
		2743
		2744	sub post_cleanup {
		2745	my ($make_core) = @_;
		2746
		2747	warn Carp::longmess "post_cleanup backtrace"
		2748	if $make_core;
		2749	}
		2750
2027	sub reload() {	2751	sub do_reload_perl() {
2028	# can/must only be called in main	2752	# can/must only be called in main
2029	if ($Coro::current != $Coro::main) {	2753	if ($Coro::current != $Coro::main) {
2030	warn "can only reload from main coroutine\n";	2754	warn "can only reload from main coroutine";
2031	return;	2755	return;
2032	}	2756	}
2033		2757
2034	warn "reloading...";	2758	warn "reloading...";
2035		2759
2036	my $guard = freeze_mainloop;	2760	warn "entering sync_job";
		2761
		2762	cf::sync_job {
		2763	cf::write_runtime; # external watchdog should not bark
2037	cf::emergency_save;	2764	cf::emergency_save;
		2765	cf::write_runtime; # external watchdog should not bark
2038		2766
2039	eval {	2767	warn "syncing database to disk";
		2768	BDB::db_env_txn_checkpoint $DB_ENV;
		2769
2040	# if anything goes wrong in here, we should simply crash as we already saved	2770	# if anything goes wrong in here, we should simply crash as we already saved
2041		2771
2042	# cancel all watchers	2772	warn "cancelling all WF_AUTOCANCEL watchers";
2043	for (Event::all_watchers) {	2773	for (Event::all_watchers) {
2044	$_->cancel if $_->data & WF_AUTOCANCEL;	2774	$_->cancel if $_->data & WF_AUTOCANCEL;
2045	}	2775	}
2046		2776
		2777	warn "flushing outstanding aio requests";
		2778	for (;;) {
		2779	BDB::flush;
		2780	IO::AIO::flush;
		2781	Coro::cede;
		2782	last unless IO::AIO::nreqs || BDB::nreqs;
		2783	warn "iterate...";
		2784	}
		2785
		2786	++$RELOAD;
		2787
2047	# cancel all extension coros	2788	warn "cancelling all extension coros";
2048	$_->cancel for values %EXT_CORO;	2789	$_->cancel for values %EXT_CORO;
2049	%EXT_CORO = ();	2790	%EXT_CORO = ();
2050		2791
2051	# unload all extensions	2792	warn "removing commands";
2052	for (@exts) {	2793	%COMMAND = ();
		2794
		2795	warn "removing ext commands";
		2796	%EXTCMD = ();
		2797
		2798	warn "unloading/nuking all extensions";
		2799	for my $pkg (@EXTS) {
2053	warn "unloading <$_>";	2800	warn "... unloading $pkg";
2054	unload_extension $_;	2801
		2802	if (my $cb = $pkg->can ("unload")) {
		2803	eval {
		2804	$cb->($pkg);
		2805	1
		2806	} or warn "$pkg unloaded, but with errors: $@";
2055	}	2807	}
2056		2808
		2809	warn "... nuking $pkg";
		2810	Symbol::delete_package $pkg;
		2811	}
		2812
2057	# unload all modules loaded from $LIBDIR	2813	warn "unloading all perl modules loaded from $LIBDIR";
2058	while (my ($k, $v) = each %INC) {	2814	while (my ($k, $v) = each %INC) {
2059	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2815	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
2060		2816
2061	warn "removing <$k>";	2817	warn "... unloading $k";
2062	delete $INC{$k};	2818	delete $INC{$k};
2063		2819
2064	$k =~ s/\.pm$//;	2820	$k =~ s/\.pm$//;
2065	$k =~ s/\//::/g;	2821	$k =~ s/\//::/g;
2066		2822
…		…
2069	}	2825	}
2070		2826
2071	Symbol::delete_package $k;	2827	Symbol::delete_package $k;
2072	}	2828	}
2073		2829
2074	# sync database to disk
2075	cf::db_sync;
2076	IO::AIO::flush;
2077
2078	# get rid of safe::, as good as possible	2830	warn "getting rid of safe::, as good as possible";
2079	Symbol::delete_package "safe::$_"	2831	Symbol::delete_package "safe::$_"
2080	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	2832	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2081		2833
2082	# remove register_script_function callbacks
2083	# TODO
2084
2085	# unload cf.pm "a bit"	2834	warn "unloading cf.pm \"a bit\"";
2086	delete $INC{"cf.pm"};	2835	delete $INC{"cf.pm"};
		2836	delete $INC{"cf/pod.pm"};
2087		2837
2088	# don't, removes xs symbols, too,	2838	# don't, removes xs symbols, too,
2089	# and global variables created in xs	2839	# and global variables created in xs
2090	#Symbol::delete_package __PACKAGE__;	2840	#Symbol::delete_package __PACKAGE__;
2091		2841
2092	# reload cf.pm	2842	warn "unload completed, starting to reload now";
		2843
2093	warn "reloading cf.pm";	2844	warn "reloading cf.pm";
2094	require cf;	2845	require cf;
2095	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2846	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2096		2847
2097	# load config and database again	2848	warn "loading config and database again";
2098	cf::cfg_load;	2849	cf::cfg_load;
2099	cf::db_load;
2100		2850
2101	# load extensions
2102	warn "load extensions";	2851	warn "loading extensions";
2103	cf::load_extensions;	2852	cf::load_extensions;
2104		2853
2105	# reattach attachments to objects	2854	warn "reattaching attachments to objects/players";
2106	warn "reattach";	2855	_global_reattach; # objects, sockets
2107	_global_reattach;	2856	warn "reattaching attachments to maps";
2108	};	2857	reattach $_ for values %MAP;
		2858	warn "reattaching attachments to players";
		2859	reattach $_ for values %PLAYER;
2109		2860
2110	if ($@) {	2861	warn "leaving sync_job";
		2862
		2863	1
		2864	} or do {
2111	warn $@;	2865	warn $@;
2112	warn "error while reloading, exiting.";	2866	warn "error while reloading, exiting.";
2113	exit 1;	2867	exit 1;
2114	}	2868	};
2115		2869
2116	warn "reloaded successfully";	2870	warn "reloaded";
2117	};	2871	};
2118		2872
2119	#############################################################################	2873	our $RELOAD_WATCHER; # used only during reload
2120		2874
2121	unless ($LINK_MAP) {	2875	sub reload_perl() {
2122	$LINK_MAP = cf::map::new;	2876	# doing reload synchronously and two reloads happen back-to-back,
		2877	# coro crashes during coro_state_free->destroy here.
2123		2878
2124	$LINK_MAP->width (41);	2879	$RELOAD_WATCHER ||= Event->timer (
2125	$LINK_MAP->height (41);	2880	reentrant => 0,
2126	$LINK_MAP->alloc;
2127	$LINK_MAP->path ("{link}");
2128	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
2129	$LINK_MAP->in_memory (MAP_IN_MEMORY);
2130
2131	# dirty hack because... archetypes are not yet loaded
2132	Event->timer (
2133	after => 2,	2881	after => 0,
		2882	data => WF_AUTOCANCEL,
2134	cb => sub {	2883	cb => sub {
2135	$_[0]->w->cancel;	2884	do_reload_perl;
2136		2885	undef $RELOAD_WATCHER;
2137	# provide some exits "home"
2138	my $exit = cf::object::new "exit";
2139
2140	$exit->slaying ($EMERGENCY_POSITION->[0]);
2141	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
2142	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
2143
2144	$LINK_MAP->insert ($exit->clone, 19, 19);
2145	$LINK_MAP->insert ($exit->clone, 19, 20);
2146	$LINK_MAP->insert ($exit->clone, 19, 21);
2147	$LINK_MAP->insert ($exit->clone, 20, 19);
2148	$LINK_MAP->insert ($exit->clone, 20, 21);
2149	$LINK_MAP->insert ($exit->clone, 21, 19);
2150	$LINK_MAP->insert ($exit->clone, 21, 20);
2151	$LINK_MAP->insert ($exit->clone, 21, 21);
2152
2153	$exit->destroy;
2154	});	2886	},
2155		2887	);
2156	$LINK_MAP->{deny_save} = 1;
2157	$LINK_MAP->{deny_reset} = 1;
2158
2159	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
2160	}	2888	}
2161
2162	register "<global>", __PACKAGE__;
2163		2889
2164	register_command "reload" => sub {	2890	register_command "reload" => sub {
2165	my ($who, $arg) = @_;	2891	my ($who, $arg) = @_;
2166		2892
2167	if ($who->flag (FLAG_WIZ)) {	2893	if ($who->flag (FLAG_WIZ)) {
2168	$who->message ("start of reload.");
2169	reload;
2170	$who->message ("end of reload.");	2894	$who->message ("reloading server.");
		2895	async { reload_perl };
2171	}	2896	}
2172	};	2897	};
2173		2898
2174	unshift @INC, $LIBDIR;	2899	unshift @INC, $LIBDIR;
2175		2900
		2901	my $bug_warning = 0;
		2902
		2903	our @WAIT_FOR_TICK;
		2904	our @WAIT_FOR_TICK_BEGIN;
		2905
		2906	sub wait_for_tick {
		2907	return unless $TICK_WATCHER->is_active;
		2908	return if $Coro::current == $Coro::main;
		2909
		2910	my $signal = new Coro::Signal;
		2911	push @WAIT_FOR_TICK, $signal;
		2912	$signal->wait;
		2913	}
		2914
		2915	sub wait_for_tick_begin {
		2916	return unless $TICK_WATCHER->is_active;
		2917	return if $Coro::current == $Coro::main;
		2918
		2919	my $signal = new Coro::Signal;
		2920	push @WAIT_FOR_TICK_BEGIN, $signal;
		2921	$signal->wait;
		2922	}
		2923
		2924	my $min = 1e6;#d#
		2925	my $avg = 10;
2176	$TICK_WATCHER = Event->timer (	2926	$TICK_WATCHER = Event->timer (
2177	reentrant => 0,	2927	reentrant => 0,
		2928	parked => 1,
2178	prio => 0,	2929	prio => 0,
2179	at => $NEXT_TICK || $TICK,	2930	at => $NEXT_TICK || $TICK,
2180	data => WF_AUTOCANCEL,	2931	data => WF_AUTOCANCEL,
2181	cb => sub {	2932	cb => sub {
		2933	if ($Coro::current != $Coro::main) {
		2934	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2935	unless ++$bug_warning > 10;
		2936	return;
		2937	}
		2938
		2939	$NOW = $tick_start = Event::time;
		2940
2182	cf::server_tick; # one server iteration	2941	cf::server_tick; # one server iteration
		2942
		2943	0 && sync_job {#d#
		2944	for(1..10) {
		2945	my $t = Event::time;
		2946	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2947	or die;
		2948
		2949	$map->width (50);
		2950	$map->height (50);
		2951	$map->alloc;
		2952	$map->_load_objects ("/tmp/x.map", 1);
		2953	my $t = Event::time - $t;
		2954
		2955	#next unless $t < 0.0013;#d#
		2956	if ($t < $min) {
		2957	$min = $t;
		2958	}
		2959	$avg = $avg * 0.99 + $t * 0.01;
		2960	}
		2961	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2962	exit 0;
		2963	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2964	};
		2965
2183	$RUNTIME += $TICK;	2966	$RUNTIME += $TICK;
2184	$NEXT_TICK += $TICK;	2967	$NEXT_TICK += $TICK;
2185		2968
		2969	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2970	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2971	Coro::async_pool {
		2972	write_runtime
		2973	or warn "ERROR: unable to write runtime file: $!";
		2974	};
		2975	}
		2976
		2977	# my $AFTER = Event::time;
		2978	# warn $AFTER - $NOW;#d#
		2979
		2980	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2981	$sig->send;
		2982	}
		2983	while (my $sig = shift @WAIT_FOR_TICK) {
		2984	$sig->send;
		2985	}
		2986
		2987	$NOW = Event::time;
		2988
2186	# if we are delayed by four ticks or more, skip them all	2989	# if we are delayed by four ticks or more, skip them all
2187	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2990	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2188		2991
2189	$TICK_WATCHER->at ($NEXT_TICK);	2992	$TICK_WATCHER->at ($NEXT_TICK);
2190	$TICK_WATCHER->start;	2993	$TICK_WATCHER->start;
		2994
		2995	$LOAD = ($NOW - $tick_start) / $TICK;
		2996	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2997
		2998	_post_tick;
		2999
		3000
2191	},	3001	},
2192	);	3002	);
2193		3003
		3004	{
2194	IO::AIO::max_poll_time $TICK * 0.2;	3005	BDB::max_poll_time $TICK * 0.1;
2195		3006	$BDB_POLL_WATCHER = Event->io (
2196	Event->io (	3007	reentrant => 0,
2197	fd => IO::AIO::poll_fileno,	3008	fd => BDB::poll_fileno,
2198	poll => 'r',	3009	poll => 'r',
2199	prio => 5,	3010	prio => 0,
2200	data => WF_AUTOCANCEL,
2201	cb => \&IO::AIO::poll_cb,
2202	);
2203
2204	Event->timer (
2205	data => WF_AUTOCANCEL,	3011	data => WF_AUTOCANCEL,
2206	after => 0,	3012	cb => \&BDB::poll_cb,
2207	interval => 10,	3013	);
2208	cb => sub {	3014	BDB::min_parallel 8;
2209	(Coro::unblock_sub {	3015
2210	write_runtime	3016	BDB::set_sync_prepare {
2211	or warn "ERROR: unable to write runtime file: $!";	3017	my $status;
		3018	my $current = $Coro::current;
		3019	(
		3020	sub {
		3021	$status = $!;
		3022	$current->ready; undef $current;
		3023	},
		3024	sub {
		3025	Coro::schedule while defined $current;
		3026	$! = $status;
		3027	},
		3028	)
		3029	};
		3030
		3031	unless ($DB_ENV) {
		3032	$DB_ENV = BDB::db_env_create;
		3033
		3034	cf::sync_job {
		3035	eval {
		3036	BDB::db_env_open
		3037	$DB_ENV,
		3038	$BDBDIR,
		3039	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3040	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3041	0666;
		3042
		3043	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3044
		3045	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3046	$DB_ENV->set_lk_detect;
		3047	};
		3048
		3049	cf::cleanup "db_env_open(db): $@" if $@;
2212	})->();	3050	};
2213	},	3051	}
2214	);	3052	}
		3053
		3054	{
		3055	IO::AIO::min_parallel 8;
		3056
		3057	undef $Coro::AIO::WATCHER;
		3058	IO::AIO::max_poll_time $TICK * 0.1;
		3059	$AIO_POLL_WATCHER = Event->io (
		3060	reentrant => 0,
		3061	data => WF_AUTOCANCEL,
		3062	fd => IO::AIO::poll_fileno,
		3063	poll => 'r',
		3064	prio => 6,
		3065	cb => \&IO::AIO::poll_cb,
		3066	);
		3067	}
		3068
		3069	my $_log_backtrace;
		3070
		3071	sub _log_backtrace {
		3072	my ($msg, @addr) = @_;
		3073
		3074	$msg =~ s/\n//;
		3075
		3076	# limit the # of concurrent backtraces
		3077	if ($_log_backtrace < 2) {
		3078	++$_log_backtrace;
		3079	async {
		3080	my @bt = fork_call {
		3081	@addr = map { sprintf "%x", $_ } @addr;
		3082	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3083	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3084	or die "addr2line: $!";
		3085
		3086	my @funcs;
		3087	my @res = <$fh>;
		3088	chomp for @res;
		3089	while (@res) {
		3090	my ($func, $line) = splice @res, 0, 2, ();
		3091	push @funcs, "[$func] $line";
		3092	}
		3093
		3094	@funcs
		3095	};
		3096
		3097	LOG llevInfo, "[ABT] $msg\n";
		3098	LOG llevInfo, "[ABT] $_\n" for @bt;
		3099	--$_log_backtrace;
		3100	};
		3101	} else {
		3102	LOG llevInfo, "[ABT] $msg\n";
		3103	LOG llevInfo, "[ABT] [suppressed]\n";
		3104	}
		3105	}
		3106
		3107	# load additional modules
		3108	use cf::pod;
2215		3109
2216	END { cf::emergency_save }	3110	END { cf::emergency_save }
2217		3111
2218	1	3112	1
2219		3113

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