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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 1.166 by root, Sat Jan 13 23:06:13 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 3.3 ();
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;
41	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
42		51
43	our %CFG;	52	our %CFG;
44		53
45	our $UPTIME; $UPTIME ||= time;	54	our $UPTIME; $UPTIME ||= time;
		55	our $RUNTIME;
		56
		57	our %PLAYER; # all users
		58	our %MAP; # all maps
		59	our $LINK_MAP; # the special {link} map, which is always available
		60	our $RANDOM_MAPS = cf::localdir . "/random";
		61
		62	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		63	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		64
		65	# used to convert map paths into valid unix filenames by replacing / by ∕
		66	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		67
		68	binmode STDOUT;
		69	binmode STDERR;
		70
		71	# read virtual server time, if available
		72	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		73	open my $fh, "<", cf::localdir . "/runtime"
		74	or die "unable to read runtime file: $!";
		75	$RUNTIME = <$fh> + 0.;
		76	}
		77
		78	mkdir cf::localdir;
		79	mkdir cf::localdir . "/" . cf::playerdir;
		80	mkdir cf::localdir . "/" . cf::tmpdir;
		81	mkdir cf::localdir . "/" . cf::uniquedir;
		82	mkdir $RANDOM_MAPS;
		83
		84	our $EMERGENCY_POSITION;
46		85
47	#############################################################################	86	#############################################################################
48		87
49	=head2 GLOBAL VARIABLES	88	=head2 GLOBAL VARIABLES
50		89
51	=over 4	90	=over 4
52		91
53	=item $cf::UPTIME	92	=item $cf::UPTIME
54		93
55	The timestamp of the server start (so not actually an uptime).	94	The timestamp of the server start (so not actually an uptime).
		95
		96	=item $cf::RUNTIME
		97
		98	The time this server has run, starts at 0 and is increased by $cf::TICK on
		99	every server tick.
56		100
57	=item $cf::LIBDIR	101	=item $cf::LIBDIR
58		102
59	The perl library directory, where extensions and cf-specific modules can	103	The perl library directory, where extensions and cf-specific modules can
60	be found. It will be added to C<@INC> automatically.	104	be found. It will be added to C<@INC> automatically.
61		105
		106	=item $cf::NOW
		107
		108	The time of the last (current) server tick.
		109
62	=item $cf::TICK	110	=item $cf::TICK
63		111
64	The interval between server ticks, in seconds.	112	The interval between server ticks, in seconds.
65		113
66	=item %cf::CFG	114	=item %cf::CFG
67		115
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	116	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	117	from wherever your confdir points to.
		118
		119	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		120
		121	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		122	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		123	processing has been done. Call C<< ->wait >> on them to maximise the
		124	window of cpu time available, or simply to synchronise to the server tick.
70		125
71	=back	126	=back
72		127
73	=cut	128	=cut
74		129
75	BEGIN {	130	BEGIN {
76	*CORE::GLOBAL::warn = sub {	131	*CORE::GLOBAL::warn = sub {
77	my $msg = join "", @_;	132	my $msg = join "", @_;
		133	utf8::encode $msg;
		134
78	$msg .= "\n"	135	$msg .= "\n"
79	unless $msg =~ /\n$/;	136	unless $msg =~ /\n$/;
80		137
81	print STDERR "cfperl: $msg";
82	LOG llevError, "cfperl: $msg";	138	LOG llevError, $msg;
83	};	139	};
84	}	140	}
85		141
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	142	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	143	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
105		161
106	$Event::DIED = sub {	162	$Event::DIED = sub {
107	warn "error in event callback: @_";	163	warn "error in event callback: @_";
108	};	164	};
109		165
110	my %ext_pkg;
111	my @exts;
112	my @hook;
113
114	=head2 UTILITY FUNCTIONS	166	=head2 UTILITY FUNCTIONS
115		167
116	=over 4	168	=over 4
117		169
		170	=item dumpval $ref
		171
118	=cut	172	=cut
		173
		174	sub dumpval {
		175	eval {
		176	local $SIG{__DIE__};
		177	my $d;
		178	if (1) {
		179	$d = new Data::Dumper([$_[0]], ["*var"]);
		180	$d->Terse(1);
		181	$d->Indent(2);
		182	$d->Quotekeys(0);
		183	$d->Useqq(1);
		184	#$d->Bless(...);
		185	$d->Seen($_[1]) if @_ > 1;
		186	$d = $d->Dump();
		187	}
		188	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		189	$d
		190	} || "[unable to dump $_[0]: '$@']";
		191	}
119		192
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	193	use JSON::Syck (); # TODO# replace by JSON::PC once working
121		194
122	=item $ref = cf::from_json $json	195	=item $ref = cf::from_json $json
123		196
…		…
137	=cut	210	=cut
138		211
139	sub to_json($) {	212	sub to_json($) {
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	213	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
141	JSON::Syck::Dump $_[0]	214	JSON::Syck::Dump $_[0]
		215	}
		216
		217	=item cf::lock_wait $string
		218
		219	Wait until the given lock is available. See cf::lock_acquire.
		220
		221	=item my $lock = cf::lock_acquire $string
		222
		223	Wait until the given lock is available and then acquires it and returns
		224	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		225	for example when the coroutine gets canceled), the lock is automatically
		226	returned.
		227
		228	Lock names should begin with a unique identifier (for example, cf::map::find
		229	uses map_find and cf::map::load uses map_load).
		230
		231	=cut
		232
		233	our %LOCK;
		234
		235	sub lock_wait($) {
		236	my ($key) = @_;
		237
		238	# wait for lock, if any
		239	while ($LOCK{$key}) {
		240	push @{ $LOCK{$key} }, $Coro::current;
		241	Coro::schedule;
		242	}
		243	}
		244
		245	sub lock_acquire($) {
		246	my ($key) = @_;
		247
		248	# wait, to be sure we are not locked
		249	lock_wait $key;
		250
		251	$LOCK{$key} = [];
		252
		253	Coro::guard {
		254	# wake up all waiters, to be on the safe side
		255	$_->ready for @{ delete $LOCK{$key} };
		256	}
		257	}
		258
		259	sub freeze_mainloop {
		260	return unless $TICK_WATCHER->is_active;
		261
		262	my $guard = Coro::guard { $TICK_WATCHER->start };
		263	$TICK_WATCHER->stop;
		264	$guard
		265	}
		266
		267	=item cf::async { BLOCK }
		268
		269	Currently the same as Coro::async_pool, meaning you cannot use
		270	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		271	thing you are allowed to do is call C<prio> on it.
		272
		273	=cut
		274
		275	BEGIN { *async = \&Coro::async_pool }
		276
		277	=item cf::sync_job { BLOCK }
		278
		279	The design of crossfire+ requires that the main coro ($Coro::main) is
		280	always able to handle events or runnable, as crossfire+ is only partly
		281	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		282
		283	If it must be done, put the blocking parts into C<sync_job>. This will run
		284	the given BLOCK in another coroutine while waiting for the result. The
		285	server will be frozen during this time, so the block should either finish
		286	fast or be very important.
		287
		288	=cut
		289
		290	sub sync_job(&) {
		291	my ($job) = @_;
		292
		293	if ($Coro::current == $Coro::main) {
		294	# this is the main coro, too bad, we have to block
		295	# till the operation succeeds, freezing the server :/
		296
		297	# TODO: use suspend/resume instead
		298	# (but this is cancel-safe)
		299	my $freeze_guard = freeze_mainloop;
		300
		301	my $busy = 1;
		302	my @res;
		303
		304	(async {
		305	@res = eval { $job->() };
		306	warn $@ if $@;
		307	undef $busy;
		308	})->prio (Coro::PRIO_MAX);
		309
		310	while ($busy) {
		311	Coro::cede or Event::one_event;
		312	}
		313
		314	wantarray ? @res : $res[0]
		315	} else {
		316	# we are in another coroutine, how wonderful, everything just works
		317
		318	$job->()
		319	}
		320	}
		321
		322	=item $coro = cf::async_ext { BLOCK }
		323
		324	Like async, but this coro is automatically being canceled when the
		325	extension calling this is being unloaded.
		326
		327	=cut
		328
		329	sub async_ext(&) {
		330	my $cb = shift;
		331
		332	my $coro = &Coro::async ($cb);
		333
		334	$coro->on_destroy (sub {
		335	delete $EXT_CORO{$coro+0};
		336	});
		337	$EXT_CORO{$coro+0} = $coro;
		338
		339	$coro
		340	}
		341
		342	sub write_runtime {
		343	return unless $TICK_WATCHER->is_active;
		344
		345	my $runtime = cf::localdir . "/runtime";
		346
		347	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		348	or return;
		349
		350	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		351	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		352	and return;
		353
		354	aio_fsync $fh
		355	and return;
		356
		357	close $fh
		358	or return;
		359
		360	aio_rename "$runtime~", $runtime
		361	and return;
		362
		363	1
142	}	364	}
143		365
144	=back	366	=back
145		367
146	=cut	368	=cut
…		…
454	=cut	676	=cut
455		677
456	#############################################################################	678	#############################################################################
457	# object support	679	# object support
458		680
		681	sub reattach {
		682	# basically do the same as instantiate, without calling instantiate
		683	my ($obj) = @_;
		684
		685	my $registry = $obj->registry;
		686
		687	@$registry = ();
		688
		689	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		690
		691	for my $name (keys %{ $obj->{_attachment} || {} }) {
		692	if (my $attach = $attachment{$name}) {
		693	for (@$attach) {
		694	my ($klass, @attach) = @$_;
		695	_attach $registry, $klass, @attach;
		696	}
		697	} else {
		698	warn "object uses attachment '$name' that is not available, postponing.\n";
		699	}
		700	}
		701	}
		702
459	cf::attachable->attach (	703	cf::attachable->attach (
460	prio => -1000000,	704	prio => -1000000,
461	on_instantiate => sub {	705	on_instantiate => sub {
462	my ($obj, $data) = @_;	706	my ($obj, $data) = @_;
463		707
…		…
467	my ($name, $args) = @$_;	711	my ($name, $args) = @$_;
468		712
469	$obj->attach ($name, %{$args || {} });	713	$obj->attach ($name, %{$args || {} });
470	}	714	}
471	},	715	},
472	on_reattach => sub {	716	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($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 {	717	on_clone => sub {
493	my ($src, $dst) = @_;	718	my ($src, $dst) = @_;
494		719
495	@{$dst->registry} = @{$src->registry};	720	@{$dst->registry} = @{$src->registry};
496		721
…		…
502	);	727	);
503		728
504	sub object_freezer_save {	729	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	730	my ($filename, $rdata, $objs) = @_;
506		731
		732	sync_job {
507	if (length $$rdata) {	733	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	734	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	735	$filename, length $$rdata, scalar @$objs;
510		736
511	if (open my $fh, ">:raw", "$filename~") {	737	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	738	chmod SAVE_MODE, $fh;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	739	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		740	aio_fsync $fh;
519	close $fh;	741	close $fh;
		742
		743	if (@$objs) {
		744	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		745	chmod SAVE_MODE, $fh;
		746	my $data = Storable::nfreeze { version => 1, objs => $objs };
		747	aio_write $fh, 0, (length $data), $data, 0;
		748	aio_fsync $fh;
		749	close $fh;
520	rename "$filename.pst~", "$filename.pst";	750	aio_rename "$filename.pst~", "$filename.pst";
		751	}
		752	} else {
		753	aio_unlink "$filename.pst";
		754	}
		755
		756	aio_rename "$filename~", $filename;
521	} else {	757	} else {
522	unlink "$filename.pst";	758	warn "FATAL: $filename~: $!\n";
523	}	759	}
524
525	rename "$filename~", $filename;
526	} else {	760	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	761	aio_unlink $filename;
531	unlink "$filename.pst";	762	aio_unlink "$filename.pst";
		763	}
532	}	764	}
533	}	765	}
534		766
535	sub object_freezer_as_string {	767	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	768	my ($rdata, $objs) = @_;
…		…
541	}	773	}
542		774
543	sub object_thawer_load {	775	sub object_thawer_load {
544	my ($filename) = @_;	776	my ($filename) = @_;
545		777
546	local $/;	778	my ($data, $av);
547		779
548	my $av;	780	(aio_load $filename, $data) >= 0
		781	or return;
549		782
550	#TODO: use sysread etc.	783	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	784	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	785	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	786	$av = eval { (Storable::thaw $av)->{objs} };
555	}	787	}
		788
		789	warn sprintf "loading %s (%d)\n",
		790	$filename, length $data, scalar @{$av || []};#d#
556	return ($data, $av);	791	return ($data, $av);
557	}
558
559	()
560	}	792	}
561		793
562	#############################################################################	794	#############################################################################
563	# command handling &c	795	# command handling &c
564		796
…		…
588	=cut	820	=cut
589		821
590	sub register_extcmd {	822	sub register_extcmd {
591	my ($name, $cb) = @_;	823	my ($name, $cb) = @_;
592		824
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	825	$EXTCMD{$name} = $cb;
597	}	826	}
598		827
599	cf::player->attach (	828	cf::player->attach (
600	on_command => sub {	829	on_command => sub {
601	my ($pl, $name, $params) = @_;	830	my ($pl, $name, $params) = @_;
…		…
614		843
615	my $msg = eval { from_json $buf };	844	my $msg = eval { from_json $buf };
616		845
617	if (ref $msg) {	846	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	847	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	848	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	849	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	850	}
622	}	851	}
623	} else {	852	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	853	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		855
627	cf::override;	856	cf::override;
628	},	857	},
629	);	858	);
630		859
631	sub register {
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	860	sub load_extension {
638	my ($path) = @_;	861	my ($path) = @_;
639		862
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	863	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
641	my $base = $1;	864	my $base = $1;
642	my $pkg = $1;	865	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;	866	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";	867	$pkg = "ext::$pkg";
645		868
646	warn "loading '$path' into '$pkg'\n";	869	warn "... loading '$path' into '$pkg'\n";
647		870
648	open my $fh, "<:utf8", $path	871	open my $fh, "<:utf8", $path
649	or die "$path: $!";	872	or die "$path: $!";
650		873
651	my $source =	874	my $source =
652	"package $pkg; use strict; use utf8;\n"	875	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"	876	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })	877	. (do { local $/; <$fh> })
655	. "\n};\n1";	878	. "\n};\n1";
656		879
657	eval $source	880	unless (eval $source) {
658	or die $@ ? "$path: $@\n"	881	my $msg = $@ ? "$path: $@\n"
659	: "extension disabled.\n";	882	: "extension disabled.\n";
660		883	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
661	push @exts, $pkg;	884	warn $@;
662	$ext_pkg{$base} = $pkg;	885	warn "mandatory extension failed to load, exiting.\n";
663		886	exit 1;
664	# no strict 'refs';	887	}
665	# @{"$pkg\::ISA"} = ext::;	888	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	# }	889	}
680		890
681	# remove commands	891	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	}	892	}
706		893
707	sub load_extensions {	894	sub load_extensions {
708	for my $ext (<$LIBDIR/*.ext>) {	895	for my $ext (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	896	next unless -r $ext;
…		…
727	};	914	};
728		915
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	916	cf::map->attach (prio => -10000, package => cf::mapsupport::);
730		917
731	#############################################################################	918	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}
737
738	# TODO: compatibility cruft, remove when no longer needed
739	cf::player->attach (
740	on_load => sub {
741	my ($pl, $path) = @_;
742
743	for my $o (all_objects $pl->ob) {
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {
745	$o->set_ob_key_value ("_perl_data");
746
747	%$o = %{ Storable::thaw pack "H*", $value };
748	}
749	}
750	},
751	);
752
753	#############################################################################
754		919
755	=head2 CORE EXTENSIONS	920	=head2 CORE EXTENSIONS
756		921
757	Functions and methods that extend core crossfire objects.	922	Functions and methods that extend core crossfire objects.
758		923
		924	=cut
		925
		926	package cf::player;
		927
		928	use Coro::AIO;
		929
759	=head3 cf::player	930	=head3 cf::player
760		931
761	=over 4	932	=over 4
762		933
763	=item cf::player::exists $login	934	=item cf::player::find $login
764		935
765	Returns true when the given account exists.	936	Returns the given player object, loading it if necessary (might block).
766		937
767	=cut	938	=cut
768		939
769	sub cf::player::exists($) {	940	sub playerdir($) {
770	cf::player::find $_[0]	941	cf::localdir
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	942	. "/"
		943	. cf::playerdir
		944	. "/"
		945	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		946	}
		947
		948	sub path($) {
		949	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		950
		951	(playerdir $login) . "/$login.pl"
		952	}
		953
		954	sub find_active($) {
		955	$cf::PLAYER{$_[0]}
		956	and $cf::PLAYER{$_[0]}->active
		957	and $cf::PLAYER{$_[0]}
		958	}
		959
		960	sub exists($) {
		961	my ($login) = @_;
		962
		963	$cf::PLAYER{$login}
		964	or cf::sync_job { !aio_stat $login }
		965	}
		966
		967	sub find($) {
		968	return $cf::PLAYER{$_[0]} || do {
		969	my $login = $_[0];
		970
		971	my $guard = cf::lock_acquire "user_find:$login";
		972
		973	$cf::PLAYER{$_[0]} || do {
		974	my $pl = load_pl path $login
		975	or return;
		976	$cf::PLAYER{$login} = $pl
		977	}
		978	}
		979	}
		980
		981	sub save($) {
		982	my ($pl) = @_;
		983
		984	return if $pl->{deny_save};
		985
		986	my $path = path $pl;
		987	my $guard = cf::lock_acquire "user_save:$path";
		988
		989	return if $pl->{deny_save};
		990
		991	aio_mkdir playerdir $pl, 0770;
		992	$pl->{last_save} = $cf::RUNTIME;
		993
		994	$pl->save_pl ($path);
		995	Coro::cede;
		996	}
		997
		998	sub new($) {
		999	my ($login) = @_;
		1000
		1001	my $self = create;
		1002
		1003	$self->ob->name ($login);
		1004	$self->{deny_save} = 1;
		1005
		1006	$cf::PLAYER{$login} = $self;
		1007
		1008	$self
		1009	}
		1010
		1011	=item $pl->quit_character
		1012
		1013	Nukes the player without looking back. If logged in, the connection will
		1014	be destroyed. May block for a long time.
		1015
		1016	=cut
		1017
		1018	sub quit_character {
		1019	my ($pl) = @_;
		1020
		1021	$pl->{deny_save} = 1;
		1022	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1023
		1024	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1025	$pl->deactivate;
		1026	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1027	$pl->ns->destroy if $pl->ns;
		1028
		1029	my $path = playerdir $pl;
		1030	my $temp = "$path~$cf::RUNTIME~deleting~";
		1031	aio_rename $path, $temp;
		1032	delete $cf::PLAYER{$pl->ob->name};
		1033	$pl->destroy;
		1034	IO::AIO::aio_rmtree $temp;
		1035	}
		1036
		1037	=item cf::player::list_logins
		1038
		1039	Returns am arrayref of all valid playernames in the system, can take a
		1040	while and may block, so not sync_job-capable, ever.
		1041
		1042	=cut
		1043
		1044	sub list_logins {
		1045	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1046	or return [];
		1047
		1048	my @logins;
		1049
		1050	for my $login (@$dirs) {
		1051	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1052	aio_read $fh, 0, 512, my $buf, 0 or next;
		1053	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1054
		1055	utf8::decode $login;
		1056	push @logins, $login;
		1057	}
		1058
		1059	\@logins
		1060	}
		1061
		1062	=item $player->maps
		1063
		1064	Returns an arrayref of map paths that are private for this
		1065	player. May block.
		1066
		1067	=cut
		1068
		1069	sub maps($) {
		1070	my ($pl) = @_;
		1071
		1072	my $files = aio_readdir playerdir $pl
		1073	or return;
		1074
		1075	my @paths;
		1076
		1077	for (@$files) {
		1078	utf8::decode $_;
		1079	next if /\.(?:pl|pst)$/;
		1080	next unless /^$PATH_SEP/o;
		1081
		1082	push @paths, "~" . $pl->ob->name . "/" . $_;
		1083	}
		1084
		1085	\@paths
772	}	1086	}
773		1087
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1088	=item $player->ext_reply ($msgid, $msgtype, %msg)
775		1089
776	Sends an ext reply to the player.	1090	Sends an ext reply to the player.
777		1091
778	=cut	1092	=cut
779		1093
780	sub cf::player::ext_reply($$$%) {	1094	sub ext_reply($$$%) {
781	my ($self, $id, %msg) = @_;	1095	my ($self, $id, %msg) = @_;
782		1096
783	$msg{msgid} = $id;	1097	$msg{msgid} = $id;
784		1098
785	$self->send ("ext " . to_json \%msg);	1099	$self->send ("ext " . cf::to_json \%msg);
786	}	1100	}
		1101
		1102	package cf;
		1103
		1104	=back
		1105
		1106
		1107	=head3 cf::map
		1108
		1109	=over 4
		1110
		1111	=cut
		1112
		1113	package cf::map;
		1114
		1115	use Fcntl;
		1116	use Coro::AIO;
		1117
		1118	use overload
		1119	'""' => \&as_string;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126
		1127	# mit "rum" bekleckern, nicht
		1128	$self->_create_random_map (
		1129	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1130	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1131	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1132	$rmp->{exit_on_final_map},
		1133	$rmp->{xsize}, $rmp->{ysize},
		1134	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1135	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1136	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1137	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1138	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1139	(cf::region::find $rmp->{region}), $rmp->{custom}
		1140	)
		1141	}
		1142
		1143	sub register {
		1144	my (undef, $regex) = @_;
		1145	my $pkg = caller;
		1146
		1147	no strict;
		1148	push @{"$pkg\::ISA"}, __PACKAGE__;
		1149
		1150	$EXT_MAP{$pkg} = qr<$regex>;
		1151	}
		1152
		1153	# also paths starting with '/'
		1154	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1155
		1156	sub normalise {
		1157	my ($path, $base) = @_;
		1158
		1159	# map plan:
		1160	#
		1161	# /! non-realised random map exit (special hack!)
		1162	# {... are special paths that are not being touched
		1163	# ?xxx/... are special absolute paths
		1164	# ?random/... random maps
		1165	# /... normal maps
		1166	# ~user/... per-player map of a specific user
		1167
		1168	$path =~ s/$PATH_SEP/\//go;
		1169
		1170	# treat it as relative path if it starts with
		1171	# something that looks reasonable
		1172	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1173	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1174
		1175	$base =~ s{[^/]+/?$}{};
		1176	$path = "$base/$path";
		1177	}
		1178
		1179	for ($path) {
		1180	redo if s{//}{/};
		1181	redo if s{/\.?/}{/};
		1182	redo if s{/[^/]+/\.\./}{/};
		1183	}
		1184
		1185	$path
		1186	}
		1187
		1188	sub new_from_path {
		1189	my (undef, $path, $base) = @_;
		1190
		1191	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1192
		1193	$path = normalise $path, $base;
		1194
		1195	for my $pkg (keys %EXT_MAP) {
		1196	if ($path =~ $EXT_MAP{$pkg}) {
		1197	my $self = bless cf::map::new, $pkg;
		1198	$self->{path} = $path; $self->path ($path);
		1199	$self->init; # pass $1 etc.
		1200	return $self;
		1201	}
		1202	}
		1203
		1204	Carp::carp "unable to resolve path '$path'.";
		1205	()
		1206	}
		1207
		1208	sub init {
		1209	my ($self) = @_;
		1210
		1211	$self
		1212	}
		1213
		1214	sub as_string {
		1215	my ($self) = @_;
		1216
		1217	"$self->{path}"
		1218	}
		1219
		1220	# the displayed name, this is a one way mapping
		1221	sub visible_name {
		1222	&as_string
		1223	}
		1224
		1225	# escape the /'s in the path
		1226	sub _escaped_path {
		1227	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1228
		1229	$path
		1230	}
		1231
		1232	# the original (read-only) location
		1233	sub load_path {
		1234	my ($self) = @_;
		1235
		1236	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1237	}
		1238
		1239	# the temporary/swap location
		1240	sub save_path {
		1241	my ($self) = @_;
		1242
		1243	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $self->_escaped_path
		1244	}
		1245
		1246	# the unique path, undef == no special unique path
		1247	sub uniq_path {
		1248	my ($self) = @_;
		1249
		1250	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		1251	}
		1252
		1253	# and all this just because we cannot iterate over
		1254	# all maps in C++...
		1255	sub change_all_map_light {
		1256	my ($change) = @_;
		1257
		1258	$_->change_map_light ($change)
		1259	for grep $_->outdoor, values %cf::MAP;
		1260	}
		1261
		1262	sub unlink_save {
		1263	my ($self) = @_;
		1264
		1265	utf8::encode (my $save = $self->save_path);
		1266	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink $save;
		1267	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink "$save.pst";
		1268	}
		1269
		1270	sub load_header_from($) {
		1271	my ($self, $path) = @_;
		1272
		1273	utf8::encode $path;
		1274	aio_open $path, O_RDONLY, 0
		1275	or return;
		1276
		1277	$self->_load_header ($path)
		1278	or return;
		1279
		1280	$self->{load_path} = $path;
		1281
		1282	1
		1283	}
		1284
		1285	sub load_orig {
		1286	my ($self) = @_;
		1287
		1288	$self->load_header_from ($self->load_path)
		1289	}
		1290
		1291	sub load_temp {
		1292	my ($self) = @_;
		1293
		1294	$self->load_header_from ($self->save_path)
		1295	}
		1296
		1297	sub load_header {
		1298	my ($self) = @_;
		1299
		1300	if ($self->load_temp) {
		1301	$self->last_access ((delete $self->{last_access})
		1302	|| $cf::RUNTIME); #d#
		1303	# safety
		1304	$self->{instantiate_time} = $cf::RUNTIME
		1305	if $self->{instantiate_time} > $cf::RUNTIME;
		1306	} else {
		1307	$self->load_orig
		1308	or return;
		1309
		1310	$self->{load_original} = 1;
		1311	$self->{instantiate_time} = $cf::RUNTIME;
		1312	$self->last_access ($cf::RUNTIME);
		1313	$self->instantiate;
		1314	}
		1315
		1316	1
		1317	}
		1318
		1319	sub find;
		1320	sub find {
		1321	my ($path, $origin) = @_;
		1322
		1323	$path = normalise $path, $origin && $origin->path;
		1324
		1325	cf::lock_wait "map_find:$path";
		1326
		1327	$cf::MAP{$path} || do {
		1328	my $guard = cf::lock_acquire "map_find:$path";
		1329	my $map = new_from_path cf::map $path
		1330	or return;
		1331
		1332	$map->{last_save} = $cf::RUNTIME;
		1333
		1334	$map->load_header
		1335	or return;
		1336
		1337	if ($map->should_reset) {
		1338	$map->reset;
		1339	undef $guard;
		1340	$map = find $path
		1341	or return;
		1342	}
		1343
		1344	$cf::MAP{$path} = $map
		1345	}
		1346	}
		1347
		1348	sub load {
		1349	my ($self) = @_;
		1350
		1351	my $path = $self->{path};
		1352	my $guard = cf::lock_acquire "map_load:$path";
		1353
		1354	return if $self->in_memory != cf::MAP_SWAPPED;
		1355
		1356	$self->in_memory (cf::MAP_LOADING);
		1357
		1358	$self->alloc;
		1359	$self->_load_objects ($self->{load_path}, 1)
		1360	or return;
		1361
		1362	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1363	if delete $self->{load_original};
		1364
		1365	if (my $uniq = $self->uniq_path) {
		1366	utf8::encode $uniq;
		1367	if (aio_open $uniq, O_RDONLY, 0) {
		1368	$self->clear_unique_items;
		1369	$self->_load_objects ($uniq, 0);
		1370	}
		1371	}
		1372
		1373	Coro::cede;
		1374
		1375	# now do the right thing for maps
		1376	$self->link_multipart_objects;
		1377
		1378	unless ($self->{deny_activate}) {
		1379	$self->decay_objects;
		1380	$self->fix_auto_apply;
		1381	$self->update_buttons;
		1382	Coro::cede;
		1383	$self->set_darkness_map;
		1384	$self->difficulty ($self->estimate_difficulty)
		1385	unless $self->difficulty;
		1386	Coro::cede;
		1387	$self->activate;
		1388	}
		1389
		1390	$self->in_memory (cf::MAP_IN_MEMORY);
		1391	}
		1392
		1393	sub customise_for {
		1394	my ($self, $ob) = @_;
		1395
		1396	return find "~" . $ob->name . "/" . $self->{path}
		1397	if $self->per_player;
		1398
		1399	$self
		1400	}
		1401
		1402	# find and load all maps in the 3x3 area around a map
		1403	sub load_diag {
		1404	my ($map) = @_;
		1405
		1406	my @diag; # diagonal neighbours
		1407
		1408	for (0 .. 3) {
		1409	my $neigh = $map->tile_path ($_)
		1410	or next;
		1411	$neigh = find $neigh, $map
		1412	or next;
		1413	$neigh->load;
		1414
		1415	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1416	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1417	}
		1418
		1419	for (@diag) {
		1420	my $neigh = find @$_
		1421	or next;
		1422	$neigh->load;
		1423	}
		1424	}
		1425
		1426	sub find_sync {
		1427	my ($path, $origin) = @_;
		1428
		1429	cf::sync_job { find $path, $origin }
		1430	}
		1431
		1432	sub do_load_sync {
		1433	my ($map) = @_;
		1434
		1435	cf::sync_job { $map->load };
		1436	}
		1437
		1438	our %MAP_PREFETCH;
		1439	our $MAP_PREFETCHER = Coro::async {
		1440	while () {
		1441	for my $path (keys %MAP_PREFETCH) {
		1442	my $map = find $path
		1443	or next;
		1444	$map->load;
		1445
		1446	delete $MAP_PREFETCH{$path};
		1447	}
		1448	Coro::schedule;
		1449	}
		1450	};
		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	$MAP_PREFETCH{$path} = 0;
		1462	$MAP_PREFETCHER->ready;
		1463
		1464	()
		1465	}
		1466
		1467	sub save {
		1468	my ($self) = @_;
		1469
		1470	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1471
		1472	$self->{last_save} = $cf::RUNTIME;
		1473
		1474	return unless $self->dirty;
		1475
		1476	my $save = $self->save_path; utf8::encode $save;
		1477	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1478
		1479	$self->{load_path} = $save;
		1480
		1481	return if $self->{deny_save};
		1482
		1483	local $self->{last_access} = $self->last_access;#d#
		1484
		1485	cf::async {
		1486	$_->contr->save for $self->players;
		1487	};
		1488
		1489	if ($uniq) {
		1490	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1491	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1492	} else {
		1493	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1494	}
		1495	}
		1496
		1497	sub swap_out {
		1498	my ($self) = @_;
		1499
		1500	# save first because save cedes
		1501	$self->save;
		1502
		1503	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1504
		1505	return if $self->players;
		1506	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1507	return if $self->{deny_save};
		1508
		1509	$self->clear;
		1510	$self->in_memory (cf::MAP_SWAPPED);
		1511	}
		1512
		1513	sub reset_at {
		1514	my ($self) = @_;
		1515
		1516	# TODO: safety, remove and allow resettable per-player maps
		1517	return 1e99 if $self->isa ("ext::map_per_player");
		1518	return 1e99 if $self->{deny_reset};
		1519
		1520	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1521	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1522
		1523	$time + $to
		1524	}
		1525
		1526	sub should_reset {
		1527	my ($self) = @_;
		1528
		1529	$self->reset_at <= $cf::RUNTIME
		1530	}
		1531
		1532	sub rename {
		1533	my ($self, $new_path) = @_;
		1534
		1535	normalise $new_path;
		1536
		1537	$self->unlink_save;
		1538
		1539	delete $cf::MAP{$self->path};
		1540	$self->{path} = $new_path; $self->path ($self->{path});
		1541	$cf::MAP{$self->path} = $self;
		1542
		1543	$self->save;
		1544	}
		1545
		1546	sub reset {
		1547	my ($self) = @_;
		1548
		1549	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1550
		1551	return if $self->players;
		1552	return if $self->isa ("ext::map_per_player");#d#
		1553
		1554	warn "resetting map ", $self->path;#d#
		1555
		1556	delete $cf::MAP{$self->path};
		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	$self->{deny_save} = 1;
		1570	$self->reset_timeout (1);
		1571	$self->rename ("{nuke}/" . ($nuke_counter++));
		1572	$self->reset; # polite request, might not happen
		1573	}
		1574
		1575	=item cf::map::unique_maps
		1576
		1577	Returns an arrayref of paths of all shared maps that have
		1578	instantiated unique items. May block.
		1579
		1580	=cut
		1581
		1582	sub unique_maps() {
		1583	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1584	or return;
		1585
		1586	my @paths;
		1587
		1588	for (@$files) {
		1589	utf8::decode $_;
		1590	next if /\.pst$/;
		1591	next unless /^$PATH_SEP/o;
		1592
		1593	push @paths, $_;
		1594	}
		1595
		1596	\@paths
		1597	}
		1598
		1599	package cf;
		1600
		1601	=back
		1602
		1603	=head3 cf::object
		1604
		1605	=cut
		1606
		1607	package cf::object;
		1608
		1609	=over 4
		1610
		1611	=item $ob->inv_recursive
		1612
		1613	Returns the inventory of the object _and_ their inventories, recursively.
		1614
		1615	=cut
		1616
		1617	sub inv_recursive_;
		1618	sub inv_recursive_ {
		1619	map { $_, inv_recursive_ $_->inv } @_
		1620	}
		1621
		1622	sub inv_recursive {
		1623	inv_recursive_ inv $_[0]
		1624	}
		1625
		1626	package cf;
787		1627
788	=back	1628	=back
789		1629
790	=head3 cf::object::player	1630	=head3 cf::object::player
791		1631
…		…
829	(ref $cf::CFG{"may_$access"}	1669	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1670	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	1671	: $cf::CFG{"may_$access"})
832	}	1672	}
833		1673
		1674	=item $player_object->enter_link
		1675
		1676	Freezes the player and moves him/her to a special map (C<{link}>).
		1677
		1678	The player should be reasonably safe there for short amounts of time. You
		1679	I<MUST> call C<leave_link> as soon as possible, though.
		1680
		1681	Will never block.
		1682
		1683	=item $player_object->leave_link ($map, $x, $y)
		1684
		1685	Moves the player out of the special C<{link}> map onto the specified
		1686	map. If the map is not valid (or omitted), the player will be moved back
		1687	to the location he/she was before the call to C<enter_link>, or, if that
		1688	fails, to the emergency map position.
		1689
		1690	Might block.
		1691
		1692	=cut
		1693
		1694	sub link_map {
		1695	unless ($LINK_MAP) {
		1696	$LINK_MAP = cf::map::find "{link}"
		1697	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1698	$LINK_MAP->load;
		1699	}
		1700
		1701	$LINK_MAP
		1702	}
		1703
		1704	sub cf::object::player::enter_link {
		1705	my ($self) = @_;
		1706
		1707	$self->deactivate_recursive;
		1708
		1709	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1710
		1711	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1712	if $self->map;
		1713
		1714	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1715	}
		1716
		1717	sub cf::object::player::leave_link {
		1718	my ($self, $map, $x, $y) = @_;
		1719
		1720	my $link_pos = delete $self->{_link_pos};
		1721
		1722	unless ($map) {
		1723	# restore original map position
		1724	($map, $x, $y) = @{ $link_pos || [] };
		1725	$map = cf::map::find $map;
		1726
		1727	unless ($map) {
		1728	($map, $x, $y) = @$EMERGENCY_POSITION;
		1729	$map = cf::map::find $map
		1730	or die "FATAL: cannot load emergency map\n";
		1731	}
		1732	}
		1733
		1734	($x, $y) = (-1, -1)
		1735	unless (defined $x) && (defined $y);
		1736
		1737	# use -1 or undef as default coordinates, not 0, 0
		1738	($x, $y) = ($map->enter_x, $map->enter_y)
		1739	if $x <=0 && $y <= 0;
		1740
		1741	$map->load;
		1742	$map->load_diag;
		1743
		1744	return unless $self->contr->active;
		1745	$self->activate_recursive;
		1746	$self->enter_map ($map, $x, $y);
		1747	}
		1748
		1749	cf::player->attach (
		1750	on_logout => sub {
		1751	my ($pl) = @_;
		1752
		1753	# abort map switching before logout
		1754	if ($pl->ob->{_link_pos}) {
		1755	cf::sync_job {
		1756	$pl->ob->leave_link
		1757	};
		1758	}
		1759	},
		1760	on_login => sub {
		1761	my ($pl) = @_;
		1762
		1763	# try to abort aborted map switching on player login :)
		1764	# should happen only on crashes
		1765	if ($pl->ob->{_link_pos}) {
		1766	$pl->ob->enter_link;
		1767	(async {
		1768	# we need this sleep as the login has a concurrent enter_exit running
		1769	# and this sleep increases chances of the player not ending up in scorn
		1770	$pl->ob->reply (undef,
		1771	"There was an internal problem at your last logout, "
		1772	. "the server will try to bring you to your intended destination in a second.",
		1773	cf::NDI_RED);
		1774	Coro::Timer::sleep 1;
		1775	$pl->ob->leave_link;
		1776	})->prio (2);
		1777	}
		1778	},
		1779	);
		1780
		1781	=item $player_object->goto ($path, $x, $y)
		1782
		1783	=cut
		1784
		1785	sub cf::object::player::goto {
		1786	my ($self, $path, $x, $y) = @_;
		1787
		1788	$self->enter_link;
		1789
		1790	(async {
		1791	my $map = cf::map::find $path;
		1792	$map = $map->customise_for ($self) if $map;
		1793
		1794	# warn "entering ", $map->path, " at ($x, $y)\n"
		1795	# if $map;
		1796
		1797	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1798
		1799	$self->leave_link ($map, $x, $y);
		1800	})->prio (1);
		1801	}
		1802
		1803	=item $player_object->enter_exit ($exit_object)
		1804
		1805	=cut
		1806
		1807	sub parse_random_map_params {
		1808	my ($spec) = @_;
		1809
		1810	my $rmp = { # defaults
		1811	xsize => 10,
		1812	ysize => 10,
		1813	};
		1814
		1815	for (split /\n/, $spec) {
		1816	my ($k, $v) = split /\s+/, $_, 2;
		1817
		1818	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1819	}
		1820
		1821	$rmp
		1822	}
		1823
		1824	sub prepare_random_map {
		1825	my ($exit) = @_;
		1826
		1827	# all this does is basically replace the /! path by
		1828	# a new random map path (?random/...) with a seed
		1829	# that depends on the exit object
		1830
		1831	my $rmp = parse_random_map_params $exit->msg;
		1832
		1833	if ($exit->map) {
		1834	$rmp->{region} = $exit->map->region_name;
		1835	$rmp->{origin_map} = $exit->map->path;
		1836	$rmp->{origin_x} = $exit->x;
		1837	$rmp->{origin_y} = $exit->y;
		1838	}
		1839
		1840	$rmp->{random_seed} ||= $exit->random_seed;
		1841
		1842	my $data = cf::to_json $rmp;
		1843	my $md5 = Digest::MD5::md5_hex $data;
		1844
		1845	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1846	aio_write $fh, 0, (length $data), $data, 0;
		1847
		1848	$exit->slaying ("?random/$md5");
		1849	$exit->msg (undef);
		1850	}
		1851	}
		1852
		1853	sub cf::object::player::enter_exit {
		1854	my ($self, $exit) = @_;
		1855
		1856	return unless $self->type == cf::PLAYER;
		1857
		1858	$self->enter_link;
		1859
		1860	(async {
		1861	$self->deactivate_recursive; # just to be sure
		1862	unless (eval {
		1863	prepare_random_map $exit
		1864	if $exit->slaying eq "/!";
		1865
		1866	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1867	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1868
		1869	1;
		1870	}) {
		1871	$self->message ("Something went wrong deep within the crossfire server. "
		1872	. "I'll try to bring you back to the map you were before. "
		1873	. "Please report this to the dungeon master!",
		1874	cf::NDI_UNIQUE | cf::NDI_RED);
		1875
		1876	warn "ERROR in enter_exit: $@";
		1877	$self->leave_link;
		1878	}
		1879	})->prio (1);
		1880	}
		1881
834	=head3 cf::client	1882	=head3 cf::client
835		1883
836	=over 4	1884	=over 4
837		1885
838	=item $client->send_drawinfo ($text, $flags)	1886	=item $client->send_drawinfo ($text, $flags)
…		…
881	on_reply => sub {	1929	on_reply => sub {
882	my ($ns, $msg) = @_;	1930	my ($ns, $msg) = @_;
883		1931
884	# this weird shuffling is so that direct followup queries	1932	# this weird shuffling is so that direct followup queries
885	# get handled first	1933	# get handled first
886	my $queue = delete $ns->{query_queue};	1934	my $queue = delete $ns->{query_queue}
		1935	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		1936
888	(shift @$queue)->[1]->($msg);	1937	(shift @$queue)->[1]->($msg);
889		1938
890	push @{ $ns->{query_queue} }, @$queue;	1939	push @{ $ns->{query_queue} }, @$queue;
891		1940
…		…
897	}	1946	}
898	}	1947	}
899	},	1948	},
900	);	1949	);
901		1950
902	=item $client->coro (\&cb)	1951	=item $client->async (\&cb)
903		1952
904	Create a new coroutine, running the specified callback. The coroutine will	1953	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	1954	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	1955	or loss of connection).
907		1956
908	=cut	1957	=cut
909		1958
910	sub cf::client::coro {	1959	sub cf::client::async {
911	my ($self, $cb) = @_;	1960	my ($self, $cb) = @_;
912		1961
913	my $coro; $coro = async {	1962	my $coro = &Coro::async ($cb);
914	eval {	1963
915	$cb->();	1964	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	1965	delete $self->{_coro}{$coro+0};
919	};	1966	});
920		1967
921	$self->{_coro}{$coro+0} = $coro;	1968	$self->{_coro}{$coro+0} = $coro;
		1969
		1970	$coro
922	}	1971	}
923		1972
924	cf::client->attach (	1973	cf::client->attach (
925	on_destroy => sub {	1974	on_destroy => sub {
926	my ($ns) = @_;	1975	my ($ns) = @_;
…		…
1090		2139
1091	{	2140	{
1092	my $path = cf::localdir . "/database.pst";	2141	my $path = cf::localdir . "/database.pst";
1093		2142
1094	sub db_load() {	2143	sub db_load() {
1095	warn "loading database $path\n";#d# remove later
1096	$DB = stat $path ? Storable::retrieve $path : { };	2144	$DB = stat $path ? Storable::retrieve $path : { };
1097	}	2145	}
1098		2146
1099	my $pid;	2147	my $pid;
1100		2148
1101	sub db_save() {	2149	sub db_save() {
1102	warn "saving database $path\n";#d# remove later
1103	waitpid $pid, 0 if $pid;	2150	waitpid $pid, 0 if $pid;
1104	if (0 == ($pid = fork)) {	2151	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;	2152	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";	2153	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;	2154	rename "$path~", $path;
…		…
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2202	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;	2203	or return;
1157		2204
1158	local $/;	2205	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2206	*CFG = YAML::Syck::Load <$fh>;
		2207
		2208	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2209
		2210	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2211	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2212
		2213	if (exists $CFG{mlockall}) {
		2214	eval {
		2215	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2216	and die "WARNING: m(un)lockall failed: $!\n";
		2217	};
		2218	warn $@ if $@;
		2219	}
1160	}	2220	}
1161		2221
1162	sub main {	2222	sub main {
		2223	# we must not ever block the main coroutine
		2224	local $Coro::idle = sub {
		2225	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2226	async { Event::one_event };
		2227	};
		2228
1163	cfg_load;	2229	cfg_load;
1164	db_load;	2230	db_load;
1165	load_extensions;	2231	load_extensions;
1166	Event::loop;	2232	Event::loop;
1167	}	2233	}
1168		2234
1169	#############################################################################	2235	#############################################################################
1170	# initialisation	2236	# initialisation and cleanup
1171		2237
		2238	# install some emergency cleanup handlers
		2239	BEGIN {
		2240	for my $signal (qw(INT HUP TERM)) {
		2241	Event->signal (
		2242	data => WF_AUTOCANCEL,
		2243	signal => $signal,
		2244	cb => sub {
		2245	cf::cleanup "SIG$signal";
		2246	},
		2247	);
		2248	}
		2249	}
		2250
		2251	sub emergency_save() {
		2252	my $freeze_guard = cf::freeze_mainloop;
		2253
		2254	warn "enter emergency perl save\n";
		2255
		2256	cf::sync_job {
		2257	# use a peculiar iteration method to avoid tripping on perl
		2258	# refcount bugs in for. also avoids problems with players
		2259	# and maps saved/Destroyed asynchronously.
		2260	warn "begin emergency player save\n";
		2261	for my $login (keys %cf::PLAYER) {
		2262	my $pl = $cf::PLAYER{$login} or next;
		2263	$pl->valid or next;
		2264	$pl->save;
		2265	}
		2266	warn "end emergency player save\n";
		2267
		2268	warn "begin emergency map save\n";
		2269	for my $path (keys %cf::MAP) {
		2270	my $map = $cf::MAP{$path} or next;
		2271	$map->valid or next;
		2272	$map->save;
		2273	}
		2274	warn "end emergency map save\n";
		2275	};
		2276
		2277	warn "leave emergency perl save\n";
		2278	}
		2279
1172	sub _perl_reload(&) {	2280	sub reload() {
1173	my ($msg) = @_;	2281	# can/must only be called in main
		2282	if ($Coro::current != $Coro::main) {
		2283	warn "can only reload from main coroutine\n";
		2284	return;
		2285	}
1174		2286
1175	$msg->("reloading...");	2287	warn "reloading...";
		2288
		2289	warn "freezing server";
		2290	my $guard = freeze_mainloop;
		2291	cf::emergency_save;
		2292
		2293	warn "sync database to disk";
		2294	cf::db_sync;
		2295	IO::AIO::flush;
1176		2296
1177	eval {	2297	eval {
		2298	# if anything goes wrong in here, we should simply crash as we already saved
		2299
1178	# cancel all watchers	2300	warn "cancel all watchers";
1179	for (Event::all_watchers) {	2301	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2302	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2303	}
1182		2304
		2305	warn "cancel all extension coros";
		2306	$_->cancel for values %EXT_CORO;
		2307	%EXT_CORO = ();
		2308
		2309	warn "remove commands";
		2310	%COMMAND = ();
		2311
		2312	warn "remove ext commands";
		2313	%EXTCMD = ();
		2314
1183	# unload all extensions	2315	warn "unload/nuke all extensions";
1184	for (@exts) {	2316	for my $pkg (@EXTS) {
1185	$msg->("unloading <$_>");	2317	warn "... unloading $pkg";
1186	unload_extension $_;	2318
		2319	if (my $cb = $pkg->can ("unload")) {
		2320	eval {
		2321	$cb->($pkg);
		2322	1
		2323	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2324	}
1188		2325
		2326	warn "... nuking $pkg";
		2327	Symbol::delete_package $pkg;
		2328	}
		2329
1189	# unload all modules loaded from $LIBDIR	2330	warn "unload all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2331	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2332	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2333
1193	$msg->("removing <$k>");	2334	warn "removing <$k>";
1194	delete $INC{$k};	2335	delete $INC{$k};
1195		2336
1196	$k =~ s/\.pm$//;	2337	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2338	$k =~ s/\//::/g;
1198		2339
…		…
1201	}	2342	}
1202		2343
1203	Symbol::delete_package $k;	2344	Symbol::delete_package $k;
1204	}	2345	}
1205		2346
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2347	warn "get rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2348	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2349	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2350
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2351	warn "unload cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2352	delete $INC{"cf.pm"};
1218		2353
1219	# don't, removes xs symbols, too,	2354	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2355	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2356	#Symbol::delete_package __PACKAGE__;
1222		2357
1223	# reload cf.pm
1224	$msg->("reloading cf.pm");	2358	warn "reloading cf.pm";
1225	require cf;	2359	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2360	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2361
1228
1229	# load config and database again	2362	warn "load config and database again";
1230	cf::cfg_load;	2363	cf::cfg_load;
1231	cf::db_load;	2364	cf::db_load;
1232		2365
1233	# load extensions	2366	warn "load extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2367	cf::load_extensions;
1236		2368
1237	# reattach attachments to objects	2369	warn "reattach attachments to objects/players";
1238	$msg->("reattach");
1239	_global_reattach;	2370	_global_reattach;
		2371	warn "reattach attachments to maps";
		2372	reattach $_ for values %MAP;
1240	};	2373	};
1241	$msg->($@) if $@;
1242		2374
1243	$msg->("reloaded");	2375	if ($@) {
		2376	warn $@;
		2377	warn "error while reloading, exiting.";
		2378	exit 1;
		2379	}
		2380
		2381	warn "reloaded";
1244	};	2382	};
1245		2383
1246	sub perl_reload() {
1247	_perl_reload {
1248	warn $_[0];
1249	print "$_[0]\n";
1250	};
1251	}
1252
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	2384	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	2385	my ($who, $arg) = @_;
1257		2386
1258	if ($who->flag (FLAG_WIZ)) {	2387	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	2388	$who->message ("start of reload.");
1260	warn $_[0];	2389	reload;
1261	$who->message ($_[0]);	2390	$who->message ("end of reload.");
1262	};
1263	}	2391	}
1264	};	2392	};
1265		2393
1266	unshift @INC, $LIBDIR;	2394	unshift @INC, $LIBDIR;
1267		2395
1268	$TICK_WATCHER = Event->timer (	2396	$TICK_WATCHER = Event->timer (
		2397	reentrant => 0,
1269	prio => 0,	2398	prio => 0,
1270	at => $NEXT_TICK || 1,	2399	at => $NEXT_TICK || $TICK,
1271	data => WF_AUTOCANCEL,	2400	data => WF_AUTOCANCEL,
1272	cb => sub {	2401	cb => sub {
		2402	$NOW = Event::time;
		2403
1273	cf::server_tick; # one server iteration	2404	cf::server_tick; # one server iteration
1274		2405	$RUNTIME += $TICK;
1275	my $NOW = Event::time;
1276	$NEXT_TICK += $TICK;	2406	$NEXT_TICK += $TICK;
1277		2407
		2408	$WAIT_FOR_TICK->broadcast;
		2409	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2410
1278	# if we are delayed by four ticks or more, skip them all	2411	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2412	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1280		2413
1281	$TICK_WATCHER->at ($NEXT_TICK);	2414	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	2415	$TICK_WATCHER->start;
1283	},	2416	},
1284	);	2417	);
1285		2418
1286	IO::AIO::max_poll_time $TICK * 0.2;	2419	IO::AIO::max_poll_time $TICK * 0.2;
1287		2420
		2421	Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	2422	fd => IO::AIO::poll_fileno,
1289	poll => 'r',	2423	poll => 'r',
1290	prio => 5,	2424	prio => 5,
1291	data => WF_AUTOCANCEL,	2425	data => WF_AUTOCANCEL,
1292	cb => \&IO::AIO::poll_cb);	2426	cb => \&IO::AIO::poll_cb,
		2427	);
		2428
		2429	Event->timer (
		2430	data => WF_AUTOCANCEL,
		2431	after => 0,
		2432	interval => 10,
		2433	cb => sub {
		2434	(Coro::unblock_sub {
		2435	write_runtime
		2436	or warn "ERROR: unable to write runtime file: $!";
		2437	})->();
		2438	},
		2439	);
		2440
		2441	END { cf::emergency_save }
1293		2442
1294	1	2443	1
1295		2444

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