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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.100 by root, Mon Dec 25 11:25:49 2006 UTC vs.
Revision 1.186 by root, Sat Jan 20 01:12:39 2007 UTC

…		…
8	use Storable;	8	use Storable;
9	use Opcode;	9	use Opcode;
10	use Safe;	10	use Safe;
11	use Safe::Hole;	11	use Safe::Hole;
12		12
13	use Coro;	13	use Coro 3.4 ();
14	use Coro::Event;	14	use Coro::Event;
15	use Coro::Timer;	15	use Coro::Timer;
16	use Coro::Signal;	16	use Coro::Signal;
17	use Coro::Semaphore;	17	use Coro::Semaphore;
		18	use Coro::AIO;
18		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
19	use IO::AIO 2.3;	23	use IO::AIO 2.32 ();
20	use YAML::Syck ();	24	use YAML::Syck ();
21	use Time::HiRes;	25	use Time::HiRes;
22		26
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
24		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		30
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
27		33
28	$Coro::main->prio (Coro::PRIO_MIN);	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		35
32	our %COMMAND = ();	36	our %COMMAND = ();
33	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
35		43
36	our @EVENT;	44	our @EVENT;
37	our $LIBDIR = datadir . "/ext";	45	our $LIBDIR = datadir . "/ext";
38		46
39	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
40	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
41	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
42		53
43	our %CFG;	54	our %CFG;
44		55
45	our $UPTIME; $UPTIME ||= time;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
46		87
47	#############################################################################	88	#############################################################################
48		89
49	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
50		91
51	=over 4	92	=over 4
52		93
53	=item $cf::UPTIME	94	=item $cf::UPTIME
54		95
55	The timestamp of the server start (so not actually an uptime).	96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
56		102
57	=item $cf::LIBDIR	103	=item $cf::LIBDIR
58		104
59	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
60	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
61		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
62	=item $cf::TICK	112	=item $cf::TICK
63		113
64	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
65		115
66	=item %cf::CFG	116	=item %cf::CFG
67		117
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
70		127
71	=back	128	=back
72		129
73	=cut	130	=cut
74		131
75	BEGIN {	132	BEGIN {
76	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
77	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
78	$msg .= "\n"	137	$msg .= "\n"
79	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
80		139
81	print STDERR "cfperl: $msg";
82	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
83	};	141	};
84	}	142	}
85		143
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
105		163
106	$Event::DIED = sub {	164	$Event::DIED = sub {
107	warn "error in event callback: @_";	165	warn "error in event callback: @_";
108	};	166	};
109		167
110	my %ext_pkg;
111	my @exts;
112	my @hook;
113
114	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
115		169
116	=over 4	170	=over 4
117		171
		172	=item dumpval $ref
		173
118	=cut	174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
119		194
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
121		196
122	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
123		198
…		…
137	=cut	212	=cut
138		213
139	sub to_json($) {	214	sub to_json($) {
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
141	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
		217	}
		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
142	}	371	}
143		372
144	=back	373	=back
145		374
146	=cut	375	=cut
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	507	our @CB_MAP = ();
279		508
280	my %attachment;	509	my %attachment;
281		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
282	sub _attach_cb($$$$) {	517	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
284		519
285	use sort 'stable';	520	use sort 'stable';
286		521
…		…
454	=cut	689	=cut
455		690
456	#############################################################################	691	#############################################################################
457	# object support	692	# object support
458		693
		694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
		696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
		700	my $registry = $obj->registry;
		701
		702	@$registry = ();
		703
		704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		705
		706	for my $name (keys %{ $obj->{_attachment} || {} }) {
		707	if (my $attach = $attachment{$name}) {
		708	for (@$attach) {
		709	my ($klass, @attach) = @$_;
		710	_attach $registry, $klass, @attach;
		711	}
		712	} else {
		713	warn "object uses attachment '$name' that is not available, postponing.\n";
		714	}
		715	}
		716	}
		717
459	cf::attachable->attach (	718	cf::attachable->attach (
460	prio => -1000000,	719	prio => -1000000,
461	on_instantiate => sub {	720	on_instantiate => sub {
462	my ($obj, $data) = @_;	721	my ($obj, $data) = @_;
463		722
…		…
467	my ($name, $args) = @$_;	726	my ($name, $args) = @$_;
468		727
469	$obj->attach ($name, %{$args || {} });	728	$obj->attach ($name, %{$args || {} });
470	}	729	}
471	},	730	},
472	on_reattach => sub {	731	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($obj) = @_;
475	my $registry = $obj->registry;
476
477	@$registry = ();
478
479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
480
481	for my $name (keys %{ $obj->{_attachment} || {} }) {
482	if (my $attach = $attachment{$name}) {
483	for (@$attach) {
484	my ($klass, @attach) = @$_;
485	_attach $registry, $klass, @attach;
486	}
487	} else {
488	warn "object uses attachment '$name' that is not available, postponing.\n";
489	}
490	}
491	},
492	on_clone => sub {	732	on_clone => sub {
493	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
494		734
495	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
496		736
…		…
502	);	742	);
503		743
504	sub object_freezer_save {	744	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	745	my ($filename, $rdata, $objs) = @_;
506		746
		747	sync_job {
507	if (length $$rdata) {	748	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	749	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	750	$filename, length $$rdata, scalar @$objs;
510		751
511	if (open my $fh, ">:raw", "$filename~") {	752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	753	chmod SAVE_MODE, $fh;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
519	close $fh;	756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
520	rename "$filename.pst~", "$filename.pst";	765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
521	} else {	772	} else {
522	unlink "$filename.pst";	773	warn "FATAL: $filename~: $!\n";
523	}	774	}
524
525	rename "$filename~", $filename;
526	} else {	775	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	776	aio_unlink $filename;
531	unlink "$filename.pst";	777	aio_unlink "$filename.pst";
		778	}
532	}	779	}
533	}	780	}
534		781
535	sub object_freezer_as_string {	782	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	783	my ($rdata, $objs) = @_;
…		…
541	}	788	}
542		789
543	sub object_thawer_load {	790	sub object_thawer_load {
544	my ($filename) = @_;	791	my ($filename) = @_;
545		792
546	local $/;	793	my ($data, $av);
547		794
548	my $av;	795	(aio_load $filename, $data) >= 0
		796	or return;
549		797
550	#TODO: use sysread etc.	798	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	799	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	800	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	801	$av = eval { (Storable::thaw $av)->{objs} };
555	}	802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
556	return ($data, $av);	806	return ($data, $av);
557	}
558
559	()
560	}	807	}
561		808
562	#############################################################################	809	#############################################################################
563	# command handling &c	810	# command handling &c
564		811
…		…
588	=cut	835	=cut
589		836
590	sub register_extcmd {	837	sub register_extcmd {
591	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
592		839
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	840	$EXTCMD{$name} = $cb;
597	}	841	}
598		842
599	cf::player->attach (	843	cf::player->attach (
600	on_command => sub {	844	on_command => sub {
601	my ($pl, $name, $params) = @_;	845	my ($pl, $name, $params) = @_;
…		…
614		858
615	my $msg = eval { from_json $buf };	859	my $msg = eval { from_json $buf };
616		860
617	if (ref $msg) {	861	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	863	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	864	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	865	}
622	}	866	}
623	} else {	867	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		870
627	cf::override;	871	cf::override;
628	},	872	},
629	);	873	);
630		874
631	sub register {
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	875	sub load_extension {
638	my ($path) = @_;	876	my ($path) = @_;
639		877
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
641	my $base = $1;	879	my $base = $1;
642	my $pkg = $1;	880	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
645		883
646	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
647		885
648	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
649	or die "$path: $!";	887	or die "$path: $!";
650		888
651	my $source =	889	my $source =
652	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
655	. "\n};\n1";	893	. "\n};\n1";
656		894
657	eval $source	895	unless (eval $source) {
658	or die $@ ? "$path: $@\n"	896	my $msg = $@ ? "$path: $@\n"
659	: "extension disabled.\n";	897	: "extension disabled.\n";
660		898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
661	push @exts, $pkg;	899	warn $@;
662	$ext_pkg{$base} = $pkg;	900	warn "mandatory extension failed to load, exiting.\n";
663		901	exit 1;
664	# no strict 'refs';	902	}
665	# @{"$pkg\::ISA"} = ext::;	903	die $@;
666
667	register $base, $pkg;
668	}
669
670	sub unload_extension {
671	my ($pkg) = @_;
672
673	warn "removing extension $pkg\n";
674
675	# remove hooks
676	#TODO
677	# for my $idx (0 .. $#PLUGIN_EVENT) {
678	# delete $hook[$idx]{$pkg};
679	# }	904	}
680		905
681	# remove commands	906	push @EXTS, $pkg;
682	for my $name (keys %COMMAND) {
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
684
685	if (@cb) {
686	$COMMAND{$name} = \@cb;
687	} else {
688	delete $COMMAND{$name};
689	}
690	}
691
692	# remove extcmds
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
694	delete $EXTCMD{$name};
695	}
696
697	if (my $cb = $pkg->can ("unload")) {
698	eval {
699	$cb->($pkg);
700	1
701	} or warn "$pkg unloaded, but with errors: $@";
702	}
703
704	Symbol::delete_package $pkg;
705	}	907	}
706		908
707	sub load_extensions {	909	sub load_extensions {
708	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	911	next unless -r $ext;
…		…
713	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
714	}	916	}
715	}	917	}
716		918
717	#############################################################################	919	#############################################################################
718	# load/save/clean perl data associated with a map
719		920
720	*cf::mapsupport::on_clean = sub {	921	=head2 CORE EXTENSIONS
		922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	sub register {
		1146	my (undef, $regex) = @_;
		1147	my $pkg = caller;
		1148
		1149	no strict;
		1150	push @{"$pkg\::ISA"}, __PACKAGE__;
		1151
		1152	$EXT_MAP{$pkg} = qr<$regex>;
		1153	}
		1154
		1155	# also paths starting with '/'
		1156	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1157
		1158	sub thawer_merge {
		1159	my ($self, $merge) = @_;
		1160
		1161	# we have to keep some variables in memory intact
		1162	local $self->{path};
		1163	local $self->{load_path};
		1164	local $self->{deny_save};
		1165	local $self->{deny_reset};
		1166
		1167	$self->SUPER::thawer_merge ($merge);
		1168	}
		1169
		1170	sub normalise {
		1171	my ($path, $base) = @_;
		1172
		1173	# map plan:
		1174	#
		1175	# /! non-realised random map exit (special hack!)
		1176	# {... are special paths that are not being touched
		1177	# ?xxx/... are special absolute paths
		1178	# ?random/... random maps
		1179	# /... normal maps
		1180	# ~user/... per-player map of a specific user
		1181
		1182	$path =~ s/$PATH_SEP/\//go;
		1183
		1184	# treat it as relative path if it starts with
		1185	# something that looks reasonable
		1186	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1187	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1188
		1189	$base =~ s{[^/]+/?$}{};
		1190	$path = "$base/$path";
		1191	}
		1192
		1193	for ($path) {
		1194	redo if s{//}{/};
		1195	redo if s{/\.?/}{/};
		1196	redo if s{/[^/]+/\.\./}{/};
		1197	}
		1198
		1199	$path
		1200	}
		1201
		1202	sub new_from_path {
		1203	my (undef, $path, $base) = @_;
		1204
		1205	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1206
		1207	$path = normalise $path, $base;
		1208
		1209	for my $pkg (keys %EXT_MAP) {
		1210	if ($path =~ $EXT_MAP{$pkg}) {
		1211	my $self = bless cf::map::new, $pkg;
		1212	$self->{path} = $path; $self->path ($path);
		1213	$self->init; # pass $1 etc.
		1214	return $self;
		1215	}
		1216	}
		1217
		1218	Carp::carp "unable to resolve path '$path'.";
		1219	()
		1220	}
		1221
		1222	sub init {
		1223	my ($self) = @_;
		1224
		1225	$self
		1226	}
		1227
		1228	sub as_string {
		1229	my ($self) = @_;
		1230
		1231	"$self->{path}"
		1232	}
		1233
		1234	# the displayed name, this is a one way mapping
		1235	sub visible_name {
		1236	&as_string
		1237	}
		1238
		1239	# the original (read-only) location
		1240	sub load_path {
		1241	my ($self) = @_;
		1242
		1243	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1244	}
		1245
		1246	# the temporary/swap location
		1247	sub save_path {
		1248	my ($self) = @_;
		1249
		1250	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1251	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1252	}
		1253
		1254	# the unique path, undef == no special unique path
		1255	sub uniq_path {
		1256	my ($self) = @_;
		1257
		1258	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1259	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1260	}
		1261
		1262	# and all this just because we cannot iterate over
		1263	# all maps in C++...
		1264	sub change_all_map_light {
		1265	my ($change) = @_;
		1266
		1267	$_->change_map_light ($change)
		1268	for grep $_->outdoor, values %cf::MAP;
		1269	}
		1270
		1271	sub unlink_save {
		1272	my ($self) = @_;
		1273
		1274	utf8::encode (my $save = $self->save_path);
		1275	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1276	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1277	}
		1278
		1279	sub load_header_from($) {
		1280	my ($self, $path) = @_;
		1281
		1282	utf8::encode $path;
		1283	aio_open $path, O_RDONLY, 0
		1284	or return;
		1285
		1286	$self->_load_header ($path)
		1287	or return;
		1288
		1289	$self->{load_path} = $path;
		1290
		1291	1
		1292	}
		1293
		1294	sub load_orig {
		1295	my ($self) = @_;
		1296
		1297	$self->load_header_from ($self->load_path)
		1298	}
		1299
		1300	sub load_temp {
		1301	my ($self) = @_;
		1302
		1303	$self->load_header_from ($self->save_path)
		1304	}
		1305
		1306	sub load_header {
		1307	my ($self) = @_;
		1308
		1309	if ($self->load_temp) {
		1310	$self->last_access ((delete $self->{last_access})
		1311	|| $cf::RUNTIME); #d#
		1312	# safety
		1313	$self->{instantiate_time} = $cf::RUNTIME
		1314	if $self->{instantiate_time} > $cf::RUNTIME;
		1315	} else {
		1316	$self->load_orig
		1317	or return;
		1318
		1319	$self->{load_original} = 1;
		1320	$self->{instantiate_time} = $cf::RUNTIME;
		1321	$self->last_access ($cf::RUNTIME);
		1322	$self->instantiate;
		1323	}
		1324
		1325	1
		1326	}
		1327
		1328	sub find;
		1329	sub find {
		1330	my ($path, $origin) = @_;
		1331
		1332	$path = normalise $path, $origin && $origin->path;
		1333
		1334	cf::lock_wait "map_find:$path";
		1335
		1336	$cf::MAP{$path} || do {
		1337	my $guard = cf::lock_acquire "map_find:$path";
		1338	my $map = new_from_path cf::map $path
		1339	or return;
		1340
		1341	$map->{last_save} = $cf::RUNTIME;
		1342
		1343	$map->load_header
		1344	or return;
		1345
		1346	if ($map->should_reset) {
		1347	# doing this can freeze the server in a sync job, obviously
		1348	#$cf::WAIT_FOR_TICK->wait;
		1349	$map->reset;
		1350	undef $guard;
		1351	$map = find $path
		1352	or return;
		1353	}
		1354
		1355	$cf::MAP{$path} = $map
		1356	}
		1357	}
		1358
		1359	sub load {
		1360	my ($self) = @_;
		1361
		1362	my $path = $self->{path};
		1363	my $guard = cf::lock_acquire "map_load:$path";
		1364
		1365	return if $self->in_memory != cf::MAP_SWAPPED;
		1366
		1367	$self->in_memory (cf::MAP_LOADING);
		1368
		1369	$self->alloc;
		1370	$self->_load_objects ($self->{load_path}, 1)
		1371	or return;
		1372
		1373	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1374	if delete $self->{load_original};
		1375
		1376	if (my $uniq = $self->uniq_path) {
		1377	utf8::encode $uniq;
		1378	if (aio_open $uniq, O_RDONLY, 0) {
		1379	$self->clear_unique_items;
		1380	$self->_load_objects ($uniq, 0);
		1381	}
		1382	}
		1383
		1384	Coro::cede;
		1385
		1386	# now do the right thing for maps
		1387	$self->link_multipart_objects;
		1388
		1389	unless ($self->{deny_activate}) {
		1390	$self->decay_objects;
		1391	$self->fix_auto_apply;
		1392	$self->update_buttons;
		1393	Coro::cede;
		1394	$self->set_darkness_map;
		1395	$self->difficulty ($self->estimate_difficulty)
		1396	unless $self->difficulty;
		1397	Coro::cede;
		1398	$self->activate;
		1399	}
		1400
		1401	$self->in_memory (cf::MAP_IN_MEMORY);
		1402	}
		1403
		1404	sub customise_for {
		1405	my ($self, $ob) = @_;
		1406
		1407	return find "~" . $ob->name . "/" . $self->{path}
		1408	if $self->per_player;
		1409
		1410	$self
		1411	}
		1412
		1413	# find and load all maps in the 3x3 area around a map
		1414	sub load_diag {
721	my ($map) = @_;	1415	my ($map) = @_;
722		1416
723	my $path = $map->tmpname;	1417	my @diag; # diagonal neighbours
724	defined $path or return;
725		1418
726	unlink "$path.pst";	1419	for (0 .. 3) {
727	};	1420	my $neigh = $map->tile_path ($_)
		1421	or next;
		1422	$neigh = find $neigh, $map
		1423	or next;
		1424	$neigh->load;
728		1425
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1426	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1427	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1428	}
730		1429
731	#############################################################################	1430	for (@diag) {
732	# load/save perl data associated with player->ob objects	1431	my $neigh = find @$_
733		1432	or next;
734	sub all_objects(@) {	1433	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1434	}
736	}	1435	}
737		1436
738	# TODO: compatibility cruft, remove when no longer needed	1437	sub find_sync {
739	cf::player->attach (	1438	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1439
743	for my $o (all_objects $pl->ob) {	1440	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1441	}
745	$o->set_ob_key_value ("_perl_data");
746		1442
747	%$o = %{ Storable::thaw pack "H*", $value };	1443	sub do_load_sync {
		1444	my ($map) = @_;
		1445
		1446	cf::sync_job { $map->load };
		1447	}
		1448
		1449	our %MAP_PREFETCH;
		1450	our $MAP_PREFETCHER = undef;
		1451
		1452	sub find_async {
		1453	my ($path, $origin) = @_;
		1454
		1455	$path = normalise $path, $origin && $origin->{path};
		1456
		1457	if (my $map = $cf::MAP{$path}) {
		1458	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1459	}
		1460
		1461	undef $MAP_PREFETCH{$path};
		1462	$MAP_PREFETCHER ||= cf::async {
		1463	while (%MAP_PREFETCH) {
		1464	for my $path (keys %MAP_PREFETCH) {
		1465	my $map = find $path
		1466	or next;
		1467	$map->load;
		1468
		1469	delete $MAP_PREFETCH{$path};
748	}	1470	}
749	}	1471	}
		1472	undef $MAP_PREFETCHER;
		1473	};
		1474
		1475	()
		1476	}
		1477
		1478	sub save {
		1479	my ($self) = @_;
		1480
		1481	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1482
		1483	$self->{last_save} = $cf::RUNTIME;
		1484
		1485	return unless $self->dirty;
		1486
		1487	my $save = $self->save_path; utf8::encode $save;
		1488	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1489
		1490	$self->{load_path} = $save;
		1491
		1492	return if $self->{deny_save};
		1493
		1494	local $self->{last_access} = $self->last_access;#d#
		1495
		1496	cf::async {
		1497	$_->contr->save for $self->players;
		1498	};
		1499
		1500	if ($uniq) {
		1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1502	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1503	} else {
		1504	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
750	},	1505	}
751	);	1506	}
752		1507
753	#############################################################################	1508	sub swap_out {
		1509	my ($self) = @_;
754		1510
755	=head2 CORE EXTENSIONS	1511	# save first because save cedes
		1512	$self->save;
756		1513
757	Functions and methods that extend core crossfire objects.	1514	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1515
759	=head3 cf::player	1516	return if $self->players;
		1517	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1518	return if $self->{deny_save};
		1519
		1520	$self->clear;
		1521	$self->in_memory (cf::MAP_SWAPPED);
		1522	}
		1523
		1524	sub reset_at {
		1525	my ($self) = @_;
		1526
		1527	# TODO: safety, remove and allow resettable per-player maps
		1528	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1529	return 1e99 if $self->{deny_reset};
		1530
		1531	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1532	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1533
		1534	$time + $to
		1535	}
		1536
		1537	sub should_reset {
		1538	my ($self) = @_;
		1539
		1540	$self->reset_at <= $cf::RUNTIME
		1541	}
		1542
		1543	sub reset {
		1544	my ($self) = @_;
		1545
		1546	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1547
		1548	return if $self->players;
		1549	return if $self->isa ("ext::map_per_player");#d#
		1550
		1551	warn "resetting map ", $self->path;#d#
		1552
		1553	delete $cf::MAP{$self->path};
		1554
		1555	$self->in_memory (cf::MAP_SWAPPED);
		1556	$self->clear;
		1557
		1558	$_->clear_links_to ($self) for values %cf::MAP;
		1559
		1560	$self->unlink_save;
		1561	$self->destroy;
		1562	}
		1563
		1564	my $nuke_counter = "aaaa";
		1565
		1566	sub nuke {
		1567	my ($self) = @_;
		1568
		1569	delete $cf::MAP{$self->path};
		1570
		1571	$self->unlink_save;
		1572
		1573	bless $self, "cf::map";
		1574	delete $self->{deny_reset};
		1575	$self->{deny_save} = 1;
		1576	$self->reset_timeout (1);
		1577	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1578
		1579	$cf::MAP{$self->path} = $self;
		1580
		1581	$self->reset; # polite request, might not happen
		1582	}
		1583
		1584	=item cf::map::unique_maps
		1585
		1586	Returns an arrayref of paths of all shared maps that have
		1587	instantiated unique items. May block.
		1588
		1589	=cut
		1590
		1591	sub unique_maps() {
		1592	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1593	or return;
		1594
		1595	my @paths;
		1596
		1597	for (@$files) {
		1598	utf8::decode $_;
		1599	next if /\.pst$/;
		1600	next unless /^$PATH_SEP/o;
		1601
		1602	s/\.map$//;
		1603	push @paths, $_;
		1604	}
		1605
		1606	\@paths
		1607	}
		1608
		1609	package cf;
		1610
		1611	=back
		1612
		1613	=head3 cf::object
		1614
		1615	=cut
		1616
		1617	package cf::object;
760		1618
761	=over 4	1619	=over 4
762		1620
763	=item cf::player::exists $login	1621	=item $ob->inv_recursive
764		1622
765	Returns true when the given account exists.	1623	Returns the inventory of the object _and_ their inventories, recursively.
766		1624
767	=cut	1625	=cut
768		1626
769	sub cf::player::exists($) {	1627	sub inv_recursive_;
770	cf::player::find $_[0]	1628	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1629	map { $_, inv_recursive_ $_->inv } @_
772	}	1630	}
773		1631
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1632	sub inv_recursive {
775		1633	inv_recursive_ inv $_[0]
776	Sends an ext reply to the player.
777
778	=cut
779
780	sub cf::player::ext_reply($$$%) {
781	my ($self, $id, %msg) = @_;
782
783	$msg{msgid} = $id;
784
785	$self->send ("ext " . to_json \%msg);
786	}	1634	}
		1635
		1636	package cf;
787		1637
788	=back	1638	=back
789		1639
790	=head3 cf::object::player	1640	=head3 cf::object::player
791		1641
…		…
829	(ref $cf::CFG{"may_$access"}	1679	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1680	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	1681	: $cf::CFG{"may_$access"})
832	}	1682	}
833		1683
		1684	=item $player_object->enter_link
		1685
		1686	Freezes the player and moves him/her to a special map (C<{link}>).
		1687
		1688	The player should be reasonably safe there for short amounts of time. You
		1689	I<MUST> call C<leave_link> as soon as possible, though.
		1690
		1691	Will never block.
		1692
		1693	=item $player_object->leave_link ($map, $x, $y)
		1694
		1695	Moves the player out of the special C<{link}> map onto the specified
		1696	map. If the map is not valid (or omitted), the player will be moved back
		1697	to the location he/she was before the call to C<enter_link>, or, if that
		1698	fails, to the emergency map position.
		1699
		1700	Might block.
		1701
		1702	=cut
		1703
		1704	sub link_map {
		1705	unless ($LINK_MAP) {
		1706	$LINK_MAP = cf::map::find "{link}"
		1707	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1708	$LINK_MAP->load;
		1709	}
		1710
		1711	$LINK_MAP
		1712	}
		1713
		1714	sub cf::object::player::enter_link {
		1715	my ($self) = @_;
		1716
		1717	$self->deactivate_recursive;
		1718
		1719	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1720
		1721	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1722	if $self->map;
		1723
		1724	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1725	}
		1726
		1727	sub cf::object::player::leave_link {
		1728	my ($self, $map, $x, $y) = @_;
		1729
		1730	my $link_pos = delete $self->{_link_pos};
		1731
		1732	unless ($map) {
		1733	# restore original map position
		1734	($map, $x, $y) = @{ $link_pos || [] };
		1735	$map = cf::map::find $map;
		1736
		1737	unless ($map) {
		1738	($map, $x, $y) = @$EMERGENCY_POSITION;
		1739	$map = cf::map::find $map
		1740	or die "FATAL: cannot load emergency map\n";
		1741	}
		1742	}
		1743
		1744	($x, $y) = (-1, -1)
		1745	unless (defined $x) && (defined $y);
		1746
		1747	# use -1 or undef as default coordinates, not 0, 0
		1748	($x, $y) = ($map->enter_x, $map->enter_y)
		1749	if $x <=0 && $y <= 0;
		1750
		1751	$map->load;
		1752	$map->load_diag;
		1753
		1754	return unless $self->contr->active;
		1755	$self->activate_recursive;
		1756	$self->enter_map ($map, $x, $y);
		1757	}
		1758
		1759	cf::player->attach (
		1760	on_logout => sub {
		1761	my ($pl) = @_;
		1762
		1763	# abort map switching before logout
		1764	if ($pl->ob->{_link_pos}) {
		1765	cf::sync_job {
		1766	$pl->ob->leave_link
		1767	};
		1768	}
		1769	},
		1770	on_login => sub {
		1771	my ($pl) = @_;
		1772
		1773	# try to abort aborted map switching on player login :)
		1774	# should happen only on crashes
		1775	if ($pl->ob->{_link_pos}) {
		1776	$pl->ob->enter_link;
		1777	(async {
		1778	# we need this sleep as the login has a concurrent enter_exit running
		1779	# and this sleep increases chances of the player not ending up in scorn
		1780	$pl->ob->reply (undef,
		1781	"There was an internal problem at your last logout, "
		1782	. "the server will try to bring you to your intended destination in a second.",
		1783	cf::NDI_RED);
		1784	Coro::Timer::sleep 1;
		1785	$pl->ob->leave_link;
		1786	})->prio (2);
		1787	}
		1788	},
		1789	);
		1790
		1791	=item $player_object->goto ($path, $x, $y)
		1792
		1793	=cut
		1794
		1795	sub cf::object::player::goto {
		1796	my ($self, $path, $x, $y) = @_;
		1797
		1798	$self->enter_link;
		1799
		1800	(async {
		1801	my $map = cf::map::find $path;
		1802	$map = $map->customise_for ($self) if $map;
		1803
		1804	# warn "entering ", $map->path, " at ($x, $y)\n"
		1805	# if $map;
		1806
		1807	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1808
		1809	$self->leave_link ($map, $x, $y);
		1810	})->prio (1);
		1811	}
		1812
		1813	=item $player_object->enter_exit ($exit_object)
		1814
		1815	=cut
		1816
		1817	sub parse_random_map_params {
		1818	my ($spec) = @_;
		1819
		1820	my $rmp = { # defaults
		1821	xsize => (cf::rndm 15, 40),
		1822	ysize => (cf::rndm 15, 40),
		1823	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1824	#layout => string,
		1825	};
		1826
		1827	for (split /\n/, $spec) {
		1828	my ($k, $v) = split /\s+/, $_, 2;
		1829
		1830	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1831	}
		1832
		1833	$rmp
		1834	}
		1835
		1836	sub prepare_random_map {
		1837	my ($exit) = @_;
		1838
		1839	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1840
		1841	# all this does is basically replace the /! path by
		1842	# a new random map path (?random/...) with a seed
		1843	# that depends on the exit object
		1844
		1845	my $rmp = parse_random_map_params $exit->msg;
		1846
		1847	if ($exit->map) {
		1848	$rmp->{region} = $exit->map->region_name;
		1849	$rmp->{origin_map} = $exit->map->path;
		1850	$rmp->{origin_x} = $exit->x;
		1851	$rmp->{origin_y} = $exit->y;
		1852	}
		1853
		1854	$rmp->{random_seed} ||= $exit->random_seed;
		1855
		1856	my $data = cf::to_json $rmp;
		1857	my $md5 = Digest::MD5::md5_hex $data;
		1858	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1859
		1860	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1861	aio_write $fh, 0, (length $data), $data, 0;
		1862	undef $fh;
		1863	aio_rename "$meta~", $meta;
		1864
		1865	$exit->slaying ("?random/$md5");
		1866	$exit->msg (undef);
		1867	}
		1868	}
		1869
		1870	sub cf::object::player::enter_exit {
		1871	my ($self, $exit) = @_;
		1872
		1873	return unless $self->type == cf::PLAYER;
		1874
		1875	$self->enter_link;
		1876
		1877	(async {
		1878	$self->deactivate_recursive; # just to be sure
		1879	unless (eval {
		1880	prepare_random_map $exit
		1881	if $exit->slaying eq "/!";
		1882
		1883	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1884	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1885
		1886	1;
		1887	}) {
		1888	$self->message ("Something went wrong deep within the crossfire server. "
		1889	. "I'll try to bring you back to the map you were before. "
		1890	. "Please report this to the dungeon master!",
		1891	cf::NDI_UNIQUE | cf::NDI_RED);
		1892
		1893	warn "ERROR in enter_exit: $@";
		1894	$self->leave_link;
		1895	}
		1896	})->prio (1);
		1897	}
		1898
834	=head3 cf::client	1899	=head3 cf::client
835		1900
836	=over 4	1901	=over 4
837		1902
838	=item $client->send_drawinfo ($text, $flags)	1903	=item $client->send_drawinfo ($text, $flags)
…		…
881	on_reply => sub {	1946	on_reply => sub {
882	my ($ns, $msg) = @_;	1947	my ($ns, $msg) = @_;
883		1948
884	# this weird shuffling is so that direct followup queries	1949	# this weird shuffling is so that direct followup queries
885	# get handled first	1950	# get handled first
886	my $queue = delete $ns->{query_queue};	1951	my $queue = delete $ns->{query_queue}
		1952	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		1953
888	(shift @$queue)->[1]->($msg);	1954	(shift @$queue)->[1]->($msg);
889		1955
890	push @{ $ns->{query_queue} }, @$queue;	1956	push @{ $ns->{query_queue} }, @$queue;
891		1957
…		…
897	}	1963	}
898	}	1964	}
899	},	1965	},
900	);	1966	);
901		1967
902	=item $client->coro (\&cb)	1968	=item $client->async (\&cb)
903		1969
904	Create a new coroutine, running the specified callback. The coroutine will	1970	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	1971	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	1972	or loss of connection).
907		1973
908	=cut	1974	=cut
909		1975
910	sub cf::client::coro {	1976	sub cf::client::async {
911	my ($self, $cb) = @_;	1977	my ($self, $cb) = @_;
912		1978
913	my $coro; $coro = async {	1979	my $coro = &Coro::async ($cb);
914	eval {	1980
915	$cb->();	1981	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	1982	delete $self->{_coro}{$coro+0};
919	};	1983	});
920		1984
921	$self->{_coro}{$coro+0} = $coro;	1985	$self->{_coro}{$coro+0} = $coro;
		1986
		1987	$coro
922	}	1988	}
923		1989
924	cf::client->attach (	1990	cf::client->attach (
925	on_destroy => sub {	1991	on_destroy => sub {
926	my ($ns) = @_;	1992	my ($ns) = @_;
…		…
1090		2156
1091	{	2157	{
1092	my $path = cf::localdir . "/database.pst";	2158	my $path = cf::localdir . "/database.pst";
1093		2159
1094	sub db_load() {	2160	sub db_load() {
1095	warn "loading database $path\n";#d# remove later
1096	$DB = stat $path ? Storable::retrieve $path : { };	2161	$DB = stat $path ? Storable::retrieve $path : { };
1097	}	2162	}
1098		2163
1099	my $pid;	2164	my $pid;
1100		2165
1101	sub db_save() {	2166	sub db_save() {
1102	warn "saving database $path\n";#d# remove later
1103	waitpid $pid, 0 if $pid;	2167	waitpid $pid, 0 if $pid;
1104	if (0 == ($pid = fork)) {	2168	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;	2169	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";	2170	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;	2171	rename "$path~", $path;
…		…
1114	sub db_sync() {	2178	sub db_sync() {
1115	db_save if $dirty;	2179	db_save if $dirty;
1116	undef $dirty;	2180	undef $dirty;
1117	}	2181	}
1118		2182
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {	2183	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;	2184	db_sync;
1121	});	2185	});
1122		2186
1123	sub db_dirty() {	2187	sub db_dirty() {
1124	$dirty = 1;	2188	$dirty = 1;
…		…
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2219	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;	2220	or return;
1157		2221
1158	local $/;	2222	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2223	*CFG = YAML::Syck::Load <$fh>;
		2224
		2225	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2226
		2227	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2228	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2229
		2230	if (exists $CFG{mlockall}) {
		2231	eval {
		2232	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2233	and die "WARNING: m(un)lockall failed: $!\n";
		2234	};
		2235	warn $@ if $@;
		2236	}
1160	}	2237	}
1161		2238
1162	sub main {	2239	sub main {
		2240	# we must not ever block the main coroutine
		2241	local $Coro::idle = sub {
		2242	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2243	(async {
		2244	Event::one_event;
		2245	})->prio (Coro::PRIO_MAX);
		2246	};
		2247
1163	cfg_load;	2248	cfg_load;
1164	db_load;	2249	db_load;
1165	load_extensions;	2250	load_extensions;
		2251
		2252	$TICK_WATCHER->start;
1166	Event::loop;	2253	Event::loop;
1167	}	2254	}
1168		2255
1169	#############################################################################	2256	#############################################################################
1170	# initialisation	2257	# initialisation and cleanup
1171		2258
		2259	# install some emergency cleanup handlers
		2260	BEGIN {
		2261	for my $signal (qw(INT HUP TERM)) {
		2262	Event->signal (
		2263	data => WF_AUTOCANCEL,
		2264	signal => $signal,
		2265	cb => sub {
		2266	cf::cleanup "SIG$signal";
		2267	},
		2268	);
		2269	}
		2270	}
		2271
		2272	sub emergency_save() {
		2273	my $freeze_guard = cf::freeze_mainloop;
		2274
		2275	warn "enter emergency perl save\n";
		2276
		2277	cf::sync_job {
		2278	# use a peculiar iteration method to avoid tripping on perl
		2279	# refcount bugs in for. also avoids problems with players
		2280	# and maps saved/destroyed asynchronously.
		2281	warn "begin emergency player save\n";
		2282	for my $login (keys %cf::PLAYER) {
		2283	my $pl = $cf::PLAYER{$login} or next;
		2284	$pl->valid or next;
		2285	$pl->save;
		2286	}
		2287	warn "end emergency player save\n";
		2288
		2289	warn "begin emergency map save\n";
		2290	for my $path (keys %cf::MAP) {
		2291	my $map = $cf::MAP{$path} or next;
		2292	$map->valid or next;
		2293	$map->save;
		2294	}
		2295	warn "end emergency map save\n";
		2296	};
		2297
		2298	warn "leave emergency perl save\n";
		2299	}
		2300
1172	sub _perl_reload(&) {	2301	sub reload() {
1173	my ($msg) = @_;	2302	# can/must only be called in main
		2303	if ($Coro::current != $Coro::main) {
		2304	warn "can only reload from main coroutine";
		2305	return;
		2306	}
1174		2307
1175	$msg->("reloading...");	2308	warn "reloading...";
		2309
		2310	warn "cancelling server ticker";
		2311	$TICK_WATCHER->cancel;
		2312
		2313	cf::emergency_save;
1176		2314
1177	eval {	2315	eval {
1178	# cancel all watchers	2316	# if anything goes wrong in here, we should simply crash as we already saved
		2317
		2318	warn "syncing database to disk";
		2319	cf::db_sync;
		2320
		2321	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2322	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2323	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2324	}
1182		2325
1183	# unload all extensions	2326	warn "flushing outstanding aio requests";
1184	for (@exts) {	2327	for (;;) {
1185	$msg->("unloading <$_>");	2328	IO::AIO::flush;
1186	unload_extension $_;	2329	Coro::cede;
		2330	last unless IO::AIO::nreqs;
		2331	warn "iterate...";
		2332	}
		2333
		2334	warn "cancelling all extension coros";
		2335	$_->cancel for values %EXT_CORO;
		2336	%EXT_CORO = ();
		2337
		2338	warn "removing commands";
		2339	%COMMAND = ();
		2340
		2341	warn "removing ext commands";
		2342	%EXTCMD = ();
		2343
		2344	warn "unloading/nuking all extensions";
		2345	for my $pkg (@EXTS) {
		2346	warn "... unloading $pkg";
		2347
		2348	if (my $cb = $pkg->can ("unload")) {
		2349	eval {
		2350	$cb->($pkg);
		2351	1
		2352	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2353	}
1188		2354
		2355	warn "... nuking $pkg";
		2356	Symbol::delete_package $pkg;
		2357	}
		2358
1189	# unload all modules loaded from $LIBDIR	2359	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2360	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2361	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2362
1193	$msg->("removing <$k>");	2363	warn "... unloading $k";
1194	delete $INC{$k};	2364	delete $INC{$k};
1195		2365
1196	$k =~ s/\.pm$//;	2366	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2367	$k =~ s/\//::/g;
1198		2368
…		…
1201	}	2371	}
1202		2372
1203	Symbol::delete_package $k;	2373	Symbol::delete_package $k;
1204	}	2374	}
1205		2375
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2376	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2377	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2378	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2379
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2380	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2381	delete $INC{"cf.pm"};
1218		2382
1219	# don't, removes xs symbols, too,	2383	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2384	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2385	#Symbol::delete_package __PACKAGE__;
1222		2386
1223	# reload cf.pm	2387	warn "unload completed, starting to reload now";
		2388
1224	$msg->("reloading cf.pm");	2389	warn "reloading cf.pm";
1225	require cf;	2390	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2391	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2392
1228
1229	# load config and database again	2393	warn "loading config and database again";
1230	cf::cfg_load;	2394	cf::cfg_load;
1231	cf::db_load;	2395	cf::db_load;
1232		2396
1233	# load extensions	2397	warn "loading extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2398	cf::load_extensions;
1236		2399
1237	# reattach attachments to objects	2400	warn "reattaching attachments to objects/players";
1238	$msg->("reattach");
1239	_global_reattach;	2401	_global_reattach;
		2402	warn "reattaching attachments to maps";
		2403	reattach $_ for values %MAP;
		2404
		2405	warn "restarting server ticker";
		2406
		2407	$TICK_WATCHER->start;
1240	};	2408	};
1241	$msg->($@) if $@;
1242		2409
1243	$msg->("reloaded");	2410	if ($@) {
		2411	warn $@;
		2412	warn "error while reloading, exiting.";
		2413	exit 1;
		2414	}
		2415
		2416	warn "reloaded";
1244	};	2417	};
1245		2418
1246	sub perl_reload() {	2419	our $RELOAD_WATCHER; # used only during reload
1247	_perl_reload {
1248	warn $_[0];
1249	print "$_[0]\n";
1250	};
1251	}
1252		2420
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	2421	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	2422	my ($who, $arg) = @_;
1257		2423
1258	if ($who->flag (FLAG_WIZ)) {	2424	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	2425	$who->message ("reloading server.");
1260	warn $_[0];	2426
1261	$who->message ($_[0]);	2427	# doing reload synchronously and two reloads happen back-to-back,
		2428	# coro crashes during coro_state_free->destroy here.
		2429
		2430	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2431	reload;
		2432	undef $RELOAD_WATCHER;
1262	};	2433	});
1263	}	2434	}
1264	};	2435	};
1265		2436
1266	unshift @INC, $LIBDIR;	2437	unshift @INC, $LIBDIR;
1267		2438
		2439	my $bug_warning = 0;
		2440
1268	$TICK_WATCHER = Event->timer (	2441	$TICK_WATCHER = Event->timer (
		2442	reentrant => 0,
		2443	parked => 1,
1269	prio => 0,	2444	prio => 0,
1270	at => $NEXT_TICK || 1,	2445	at => $NEXT_TICK || $TICK,
1271	data => WF_AUTOCANCEL,	2446	data => WF_AUTOCANCEL,
1272	cb => sub {	2447	cb => sub {
		2448	if ($Coro::current != $Coro::main) {
		2449	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2450	unless ++$bug_warning > 10;
		2451	return;
		2452	}
		2453
		2454	$NOW = Event::time;
		2455
1273	cf::server_tick; # one server iteration	2456	cf::server_tick; # one server iteration
1274		2457	$RUNTIME += $TICK;
1275	my $NOW = Event::time;
1276	$NEXT_TICK += $TICK;	2458	$NEXT_TICK += $TICK;
1277		2459
		2460	$WAIT_FOR_TICK->broadcast;
		2461	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2462
1278	# if we are delayed by four ticks or more, skip them all	2463	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2464	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1280		2465
1281	$TICK_WATCHER->at ($NEXT_TICK);	2466	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	2467	$TICK_WATCHER->start;
1283	},	2468	},
1284	);	2469	);
1285		2470
1286	IO::AIO::max_poll_time $TICK * 0.2;	2471	IO::AIO::max_poll_time $TICK * 0.2;
1287		2472
		2473	$AIO_POLL_WATCHER = Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	2474	fd => IO::AIO::poll_fileno,
1289	poll => 'r',	2475	poll => 'r',
1290	prio => 5,	2476	prio => 5,
1291	data => WF_AUTOCANCEL,	2477	data => WF_AUTOCANCEL,
1292	cb => \&IO::AIO::poll_cb);	2478	cb => \&IO::AIO::poll_cb,
		2479	);
		2480
		2481	$WRITE_RUNTIME_WATCHER = Event->timer (
		2482	data => WF_AUTOCANCEL,
		2483	after => 1,
		2484	interval => 10,
		2485	prio => 6, # keep it lowest so it acts like a watchdog
		2486	cb => Coro::unblock_sub {
		2487	write_runtime
		2488	or warn "ERROR: unable to write runtime file: $!";
		2489	},
		2490	);
		2491
		2492	END { cf::emergency_save }
1293		2493
1294	1	2494	1
1295		2495

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