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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.102 by root, Wed Dec 27 15:20:54 2006 UTC vs.
Revision 1.173 by root, Sun Jan 14 18:00:34 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;
		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 + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
142	}	368	}
143		369
144	=back	370	=back
145		371
146	=cut	372	=cut
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	504	our @CB_MAP = ();
279		505
280	my %attachment;	506	my %attachment;
281		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
282	sub _attach_cb($$$$) {	514	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	515	my ($registry, $event, $prio, $cb) = @_;
284		516
285	use sort 'stable';	517	use sort 'stable';
286		518
…		…
457	# object support	689	# object support
458		690
459	sub reattach {	691	sub reattach {
460	# basically do the same as instantiate, without calling instantiate	692	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
462		696
463	my $registry = $obj->registry;	697	my $registry = $obj->registry;
464		698
465	@$registry = ();	699	@$registry = ();
466		700
…		…
505	);	739	);
506		740
507	sub object_freezer_save {	741	sub object_freezer_save {
508	my ($filename, $rdata, $objs) = @_;	742	my ($filename, $rdata, $objs) = @_;
509		743
		744	sync_job {
510	if (length $$rdata) {	745	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",	746	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;	747	$filename, length $$rdata, scalar @$objs;
513		748
514	if (open my $fh, ">:raw", "$filename~") {	749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;	750	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
522	close $fh;	753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
523	rename "$filename.pst~", "$filename.pst";	762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
524	} else {	769	} else {
525	unlink "$filename.pst";	770	warn "FATAL: $filename~: $!\n";
526	}	771	}
527
528	rename "$filename~", $filename;
529	} else {	772	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;	773	aio_unlink $filename;
534	unlink "$filename.pst";	774	aio_unlink "$filename.pst";
		775	}
535	}	776	}
536	}	777	}
537		778
538	sub object_freezer_as_string {	779	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;	780	my ($rdata, $objs) = @_;
…		…
544	}	785	}
545		786
546	sub object_thawer_load {	787	sub object_thawer_load {
547	my ($filename) = @_;	788	my ($filename) = @_;
548		789
549	local $/;	790	my ($data, $av);
550		791
551	my $av;	792	(aio_load $filename, $data) >= 0
		793	or return;
552		794
553	#TODO: use sysread etc.	795	unless (aio_stat "$filename.pst") {
554	if (open my $data, "<:raw:perlio", $filename) {	796	(aio_load "$filename.pst", $av) >= 0
555	$data = <$data>;	797	or return;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };	798	$av = eval { (Storable::thaw $av)->{objs} };
558	}	799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
559	return ($data, $av);	803	return ($data, $av);
560	}
561
562	()
563	}	804	}
564		805
565	#############################################################################	806	#############################################################################
566	# command handling &c	807	# command handling &c
567		808
…		…
591	=cut	832	=cut
592		833
593	sub register_extcmd {	834	sub register_extcmd {
594	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
595		836
596	my $caller = caller;
597	#warn "registering extcmd '$name' to '$caller'";
598
599	$EXTCMD{$name} = [$cb, $caller];	837	$EXTCMD{$name} = $cb;
600	}	838	}
601		839
602	cf::player->attach (	840	cf::player->attach (
603	on_command => sub {	841	on_command => sub {
604	my ($pl, $name, $params) = @_;	842	my ($pl, $name, $params) = @_;
…		…
617		855
618	my $msg = eval { from_json $buf };	856	my $msg = eval { from_json $buf };
619		857
620	if (ref $msg) {	858	if (ref $msg) {
621	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
622	if (my %reply = $cb->[0]->($pl, $msg)) {	860	if (my %reply = $cb->($pl, $msg)) {
623	$pl->ext_reply ($msg->{msgid}, %reply);	861	$pl->ext_reply ($msg->{msgid}, %reply);
624	}	862	}
625	}	863	}
626	} else {	864	} else {
627	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
629		867
630	cf::override;	868	cf::override;
631	},	869	},
632	);	870	);
633		871
634	sub register {
635	my ($base, $pkg) = @_;
636
637	#TODO
638	}
639
640	sub load_extension {	872	sub load_extension {
641	my ($path) = @_;	873	my ($path) = @_;
642		874
643	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
644	my $base = $1;	876	my $base = $1;
645	my $pkg = $1;	877	my $pkg = $1;
646	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
647	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
648		880
649	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
650		882
651	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
652	or die "$path: $!";	884	or die "$path: $!";
653		885
654	my $source =	886	my $source =
655	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
656	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
657	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
658	. "\n};\n1";	890	. "\n};\n1";
659		891
660	eval $source	892	unless (eval $source) {
661	or die $@ ? "$path: $@\n"	893	my $msg = $@ ? "$path: $@\n"
662	: "extension disabled.\n";	894	: "extension disabled.\n";
663		895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
664	push @exts, $pkg;	896	warn $@;
665	$ext_pkg{$base} = $pkg;	897	warn "mandatory extension failed to load, exiting.\n";
666		898	exit 1;
667	# no strict 'refs';	899	}
668	# @{"$pkg\::ISA"} = ext::;	900	die $@;
669
670	register $base, $pkg;
671	}
672
673	sub unload_extension {
674	my ($pkg) = @_;
675
676	warn "removing extension $pkg\n";
677
678	# remove hooks
679	#TODO
680	# for my $idx (0 .. $#PLUGIN_EVENT) {
681	# delete $hook[$idx]{$pkg};
682	# }	901	}
683		902
684	# remove commands	903	push @EXTS, $pkg;
685	for my $name (keys %COMMAND) {
686	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
687
688	if (@cb) {
689	$COMMAND{$name} = \@cb;
690	} else {
691	delete $COMMAND{$name};
692	}
693	}
694
695	# remove extcmds
696	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
697	delete $EXTCMD{$name};
698	}
699
700	if (my $cb = $pkg->can ("unload")) {
701	eval {
702	$cb->($pkg);
703	1
704	} or warn "$pkg unloaded, but with errors: $@";
705	}
706
707	Symbol::delete_package $pkg;
708	}	904	}
709		905
710	sub load_extensions {	906	sub load_extensions {
711	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
712	next unless -r $ext;	908	next unless -r $ext;
…		…
716	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
717	}	913	}
718	}	914	}
719		915
720	#############################################################################	916	#############################################################################
721	# load/save/clean perl data associated with a map
722		917
723	*cf::mapsupport::on_clean = sub {	918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
		959	my ($login) = @_;
		960
		961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat $login }
		963	}
		964
		965	sub find($) {
		966	return $cf::PLAYER{$_[0]} || do {
		967	my $login = $_[0];
		968
		969	my $guard = cf::lock_acquire "user_find:$login";
		970
		971	$cf::PLAYER{$_[0]} || do {
		972	my $pl = load_pl path $login
		973	or return;
		974	$cf::PLAYER{$login} = $pl
		975	}
		976	}
		977	}
		978
		979	sub save($) {
		980	my ($pl) = @_;
		981
		982	return if $pl->{deny_save};
		983
		984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		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 thawer_merge {
		1157	my ($self, $merge) = @_;
		1158
		1159	# we have to keep some variables in memory intact
		1160	local $self->{path};
		1161	local $self->{load_path};
		1162	local $self->{deny_save};
		1163	local $self->{deny_reset};
		1164
		1165	$self->SUPER::thawer_merge ($merge);
		1166	}
		1167
		1168	sub normalise {
		1169	my ($path, $base) = @_;
		1170
		1171	# map plan:
		1172	#
		1173	# /! non-realised random map exit (special hack!)
		1174	# {... are special paths that are not being touched
		1175	# ?xxx/... are special absolute paths
		1176	# ?random/... random maps
		1177	# /... normal maps
		1178	# ~user/... per-player map of a specific user
		1179
		1180	$path =~ s/$PATH_SEP/\//go;
		1181
		1182	# treat it as relative path if it starts with
		1183	# something that looks reasonable
		1184	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1185	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1186
		1187	$base =~ s{[^/]+/?$}{};
		1188	$path = "$base/$path";
		1189	}
		1190
		1191	for ($path) {
		1192	redo if s{//}{/};
		1193	redo if s{/\.?/}{/};
		1194	redo if s{/[^/]+/\.\./}{/};
		1195	}
		1196
		1197	$path
		1198	}
		1199
		1200	sub new_from_path {
		1201	my (undef, $path, $base) = @_;
		1202
		1203	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1204
		1205	$path = normalise $path, $base;
		1206
		1207	for my $pkg (keys %EXT_MAP) {
		1208	if ($path =~ $EXT_MAP{$pkg}) {
		1209	my $self = bless cf::map::new, $pkg;
		1210	$self->{path} = $path; $self->path ($path);
		1211	$self->init; # pass $1 etc.
		1212	return $self;
		1213	}
		1214	}
		1215
		1216	Carp::carp "unable to resolve path '$path'.";
		1217	()
		1218	}
		1219
		1220	sub init {
		1221	my ($self) = @_;
		1222
		1223	$self
		1224	}
		1225
		1226	sub as_string {
		1227	my ($self) = @_;
		1228
		1229	"$self->{path}"
		1230	}
		1231
		1232	# the displayed name, this is a one way mapping
		1233	sub visible_name {
		1234	&as_string
		1235	}
		1236
		1237	# the original (read-only) location
		1238	sub load_path {
		1239	my ($self) = @_;
		1240
		1241	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1242	}
		1243
		1244	# the temporary/swap location
		1245	sub save_path {
		1246	my ($self) = @_;
		1247
		1248	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1249	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1250	}
		1251
		1252	# the unique path, undef == no special unique path
		1253	sub uniq_path {
		1254	my ($self) = @_;
		1255
		1256	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1257	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1258	}
		1259
		1260	# and all this just because we cannot iterate over
		1261	# all maps in C++...
		1262	sub change_all_map_light {
		1263	my ($change) = @_;
		1264
		1265	$_->change_map_light ($change)
		1266	for grep $_->outdoor, values %cf::MAP;
		1267	}
		1268
		1269	sub unlink_save {
		1270	my ($self) = @_;
		1271
		1272	utf8::encode (my $save = $self->save_path);
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1274	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1275	}
		1276
		1277	sub load_header_from($) {
		1278	my ($self, $path) = @_;
		1279
		1280	utf8::encode $path;
		1281	aio_open $path, O_RDONLY, 0
		1282	or return;
		1283
		1284	$self->_load_header ($path)
		1285	or return;
		1286
		1287	$self->{load_path} = $path;
		1288
		1289	1
		1290	}
		1291
		1292	sub load_orig {
		1293	my ($self) = @_;
		1294
		1295	$self->load_header_from ($self->load_path)
		1296	}
		1297
		1298	sub load_temp {
		1299	my ($self) = @_;
		1300
		1301	$self->load_header_from ($self->save_path)
		1302	}
		1303
		1304	sub load_header {
		1305	my ($self) = @_;
		1306
		1307	if ($self->load_temp) {
		1308	$self->last_access ((delete $self->{last_access})
		1309	|| $cf::RUNTIME); #d#
		1310	# safety
		1311	$self->{instantiate_time} = $cf::RUNTIME
		1312	if $self->{instantiate_time} > $cf::RUNTIME;
		1313	} else {
		1314	$self->load_orig
		1315	or return;
		1316
		1317	$self->{load_original} = 1;
		1318	$self->{instantiate_time} = $cf::RUNTIME;
		1319	$self->last_access ($cf::RUNTIME);
		1320	$self->instantiate;
		1321	}
		1322
		1323	1
		1324	}
		1325
		1326	sub find;
		1327	sub find {
		1328	my ($path, $origin) = @_;
		1329
		1330	$path = normalise $path, $origin && $origin->path;
		1331
		1332	cf::lock_wait "map_find:$path";
		1333
		1334	$cf::MAP{$path} || do {
		1335	my $guard = cf::lock_acquire "map_find:$path";
		1336	my $map = new_from_path cf::map $path
		1337	or return;
		1338
		1339	$map->{last_save} = $cf::RUNTIME;
		1340
		1341	$map->load_header
		1342	or return;
		1343
		1344	if ($map->should_reset) {
		1345	$cf::WAIT_FOR_TICK->wait;
		1346	$map->reset;
		1347	undef $guard;
		1348	$map = find $path
		1349	or return;
		1350	}
		1351
		1352	$cf::MAP{$path} = $map
		1353	}
		1354	}
		1355
		1356	sub load {
		1357	my ($self) = @_;
		1358
		1359	my $path = $self->{path};
		1360	my $guard = cf::lock_acquire "map_load:$path";
		1361
		1362	return if $self->in_memory != cf::MAP_SWAPPED;
		1363
		1364	$self->in_memory (cf::MAP_LOADING);
		1365
		1366	$self->alloc;
		1367	$self->_load_objects ($self->{load_path}, 1)
		1368	or return;
		1369
		1370	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1371	if delete $self->{load_original};
		1372
		1373	if (my $uniq = $self->uniq_path) {
		1374	utf8::encode $uniq;
		1375	if (aio_open $uniq, O_RDONLY, 0) {
		1376	$self->clear_unique_items;
		1377	$self->_load_objects ($uniq, 0);
		1378	}
		1379	}
		1380
		1381	Coro::cede;
		1382
		1383	# now do the right thing for maps
		1384	$self->link_multipart_objects;
		1385
		1386	unless ($self->{deny_activate}) {
		1387	$self->decay_objects;
		1388	$self->fix_auto_apply;
		1389	$self->update_buttons;
		1390	Coro::cede;
		1391	$self->set_darkness_map;
		1392	$self->difficulty ($self->estimate_difficulty)
		1393	unless $self->difficulty;
		1394	Coro::cede;
		1395	$self->activate;
		1396	}
		1397
		1398	$self->in_memory (cf::MAP_IN_MEMORY);
		1399	}
		1400
		1401	sub customise_for {
		1402	my ($self, $ob) = @_;
		1403
		1404	return find "~" . $ob->name . "/" . $self->{path}
		1405	if $self->per_player;
		1406
		1407	$self
		1408	}
		1409
		1410	# find and load all maps in the 3x3 area around a map
		1411	sub load_diag {
724	my ($map) = @_;	1412	my ($map) = @_;
725		1413
726	my $path = $map->tmpname;	1414	my @diag; # diagonal neighbours
727	defined $path or return;
728		1415
729	unlink "$path.pst";	1416	for (0 .. 3) {
		1417	my $neigh = $map->tile_path ($_)
		1418	or next;
		1419	$neigh = find $neigh, $map
		1420	or next;
		1421	$neigh->load;
		1422
		1423	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1424	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1425	}
		1426
		1427	for (@diag) {
		1428	my $neigh = find @$_
		1429	or next;
		1430	$neigh->load;
		1431	}
		1432	}
		1433
		1434	sub find_sync {
		1435	my ($path, $origin) = @_;
		1436
		1437	cf::sync_job { find $path, $origin }
		1438	}
		1439
		1440	sub do_load_sync {
		1441	my ($map) = @_;
		1442
		1443	cf::sync_job { $map->load };
		1444	}
		1445
		1446	our %MAP_PREFETCH;
		1447	our $MAP_PREFETCHER = Coro::async {
		1448	while () {
		1449	for my $path (keys %MAP_PREFETCH) {
		1450	my $map = find $path
		1451	or next;
		1452	$map->load;
		1453
		1454	delete $MAP_PREFETCH{$path};
		1455	}
		1456	Coro::schedule;
		1457	}
730	};	1458	};
731		1459
732	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1460	sub find_async {
		1461	my ($path, $origin) = @_;
733		1462
734	#############################################################################	1463	$path = normalise $path, $origin && $origin->{path};
735	# load/save perl data associated with player->ob objects
736		1464
737	sub all_objects(@) {	1465	if (my $map = $cf::MAP{$path}) {
738	@_, map all_objects ($_->inv), @_	1466	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
739	}
740
741	# TODO: compatibility cruft, remove when no longer needed
742	cf::player->attach (
743	on_load => sub {
744	my ($pl, $path) = @_;
745
746	for my $o (all_objects $pl->ob) {
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {
748	$o->set_ob_key_value ("_perl_data");
749
750	%$o = %{ Storable::thaw pack "H*", $value };
751	}
752	}
753	},	1467	}
754	);
755		1468
756	#############################################################################	1469	$MAP_PREFETCH{$path} = 0;
		1470	$MAP_PREFETCHER->ready;
757		1471
758	=head2 CORE EXTENSIONS	1472	()
		1473	}
759		1474
760	Functions and methods that extend core crossfire objects.	1475	sub save {
		1476	my ($self) = @_;
761		1477
762	=head3 cf::player	1478	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1479
		1480	$self->{last_save} = $cf::RUNTIME;
		1481
		1482	return unless $self->dirty;
		1483
		1484	my $save = $self->save_path; utf8::encode $save;
		1485	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1486
		1487	$self->{load_path} = $save;
		1488
		1489	return if $self->{deny_save};
		1490
		1491	local $self->{last_access} = $self->last_access;#d#
		1492
		1493	cf::async {
		1494	$_->contr->save for $self->players;
		1495	};
		1496
		1497	if ($uniq) {
		1498	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1499	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1500	} else {
		1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1502	}
		1503	}
		1504
		1505	sub swap_out {
		1506	my ($self) = @_;
		1507
		1508	# save first because save cedes
		1509	$self->save;
		1510
		1511	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1512
		1513	return if $self->players;
		1514	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1515	return if $self->{deny_save};
		1516
		1517	$self->clear;
		1518	$self->in_memory (cf::MAP_SWAPPED);
		1519	}
		1520
		1521	sub reset_at {
		1522	my ($self) = @_;
		1523
		1524	# TODO: safety, remove and allow resettable per-player maps
		1525	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1526	return 1e99 if $self->{deny_reset};
		1527
		1528	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1529	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1530
		1531	$time + $to
		1532	}
		1533
		1534	sub should_reset {
		1535	my ($self) = @_;
		1536
		1537	$self->reset_at <= $cf::RUNTIME
		1538	}
		1539
		1540	sub rename {
		1541	my ($self, $new_path) = @_;
		1542
		1543	normalise $new_path;
		1544
		1545	$self->unlink_save;
		1546
		1547	delete $cf::MAP{$self->path};
		1548	$self->{path} = $new_path; $self->path ($self->{path});
		1549	$cf::MAP{$self->path} = $self;
		1550
		1551	$self->save;
		1552	}
		1553
		1554	sub reset {
		1555	my ($self) = @_;
		1556
		1557	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1558
		1559	return if $self->players;
		1560	return if $self->isa ("ext::map_per_player");#d#
		1561
		1562	warn "resetting map ", $self->path;#d#
		1563
		1564	delete $cf::MAP{$self->path};
		1565
		1566	$self->in_memory (cf::MAP_SWAPPED);
		1567	$self->clear;
		1568
		1569	$_->clear_links_to ($self) for values %cf::MAP;
		1570
		1571	$self->unlink_save;
		1572	$self->destroy;
		1573	}
		1574
		1575	my $nuke_counter = "aaaa";
		1576
		1577	sub nuke {
		1578	my ($self) = @_;
		1579
		1580	$self->{deny_save} = 1;
		1581	$self->reset_timeout (1);
		1582	$self->rename ("{nuke}/" . ($nuke_counter++));
		1583	$self->reset; # polite request, might not happen
		1584	}
		1585
		1586	=item cf::map::unique_maps
		1587
		1588	Returns an arrayref of paths of all shared maps that have
		1589	instantiated unique items. May block.
		1590
		1591	=cut
		1592
		1593	sub unique_maps() {
		1594	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1595	or return;
		1596
		1597	my @paths;
		1598
		1599	for (@$files) {
		1600	utf8::decode $_;
		1601	next if /\.pst$/;
		1602	next unless /^$PATH_SEP/o;
		1603
		1604	s/\.map$//;
		1605	push @paths, $_;
		1606	}
		1607
		1608	\@paths
		1609	}
		1610
		1611	package cf;
		1612
		1613	=back
		1614
		1615	=head3 cf::object
		1616
		1617	=cut
		1618
		1619	package cf::object;
763		1620
764	=over 4	1621	=over 4
765		1622
766	=item cf::player::exists $login	1623	=item $ob->inv_recursive
767		1624
768	Returns true when the given account exists.	1625	Returns the inventory of the object _and_ their inventories, recursively.
769		1626
770	=cut	1627	=cut
771		1628
772	sub cf::player::exists($) {	1629	sub inv_recursive_;
773	cf::player::find $_[0]	1630	sub inv_recursive_ {
774	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1631	map { $_, inv_recursive_ $_->inv } @_
775	}	1632	}
776		1633
777	=item $player->ext_reply ($msgid, $msgtype, %msg)	1634	sub inv_recursive {
778		1635	inv_recursive_ inv $_[0]
779	Sends an ext reply to the player.
780
781	=cut
782
783	sub cf::player::ext_reply($$$%) {
784	my ($self, $id, %msg) = @_;
785
786	$msg{msgid} = $id;
787
788	$self->send ("ext " . to_json \%msg);
789	}	1636	}
		1637
		1638	package cf;
790		1639
791	=back	1640	=back
792		1641
793	=head3 cf::object::player	1642	=head3 cf::object::player
794		1643
…		…
832	(ref $cf::CFG{"may_$access"}	1681	(ref $cf::CFG{"may_$access"}
833	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1682	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
834	: $cf::CFG{"may_$access"})	1683	: $cf::CFG{"may_$access"})
835	}	1684	}
836		1685
		1686	=item $player_object->enter_link
		1687
		1688	Freezes the player and moves him/her to a special map (C<{link}>).
		1689
		1690	The player should be reasonably safe there for short amounts of time. You
		1691	I<MUST> call C<leave_link> as soon as possible, though.
		1692
		1693	Will never block.
		1694
		1695	=item $player_object->leave_link ($map, $x, $y)
		1696
		1697	Moves the player out of the special C<{link}> map onto the specified
		1698	map. If the map is not valid (or omitted), the player will be moved back
		1699	to the location he/she was before the call to C<enter_link>, or, if that
		1700	fails, to the emergency map position.
		1701
		1702	Might block.
		1703
		1704	=cut
		1705
		1706	sub link_map {
		1707	unless ($LINK_MAP) {
		1708	$LINK_MAP = cf::map::find "{link}"
		1709	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1710	$LINK_MAP->load;
		1711	}
		1712
		1713	$LINK_MAP
		1714	}
		1715
		1716	sub cf::object::player::enter_link {
		1717	my ($self) = @_;
		1718
		1719	$self->deactivate_recursive;
		1720
		1721	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1722
		1723	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1724	if $self->map;
		1725
		1726	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1727	}
		1728
		1729	sub cf::object::player::leave_link {
		1730	my ($self, $map, $x, $y) = @_;
		1731
		1732	my $link_pos = delete $self->{_link_pos};
		1733
		1734	unless ($map) {
		1735	# restore original map position
		1736	($map, $x, $y) = @{ $link_pos || [] };
		1737	$map = cf::map::find $map;
		1738
		1739	unless ($map) {
		1740	($map, $x, $y) = @$EMERGENCY_POSITION;
		1741	$map = cf::map::find $map
		1742	or die "FATAL: cannot load emergency map\n";
		1743	}
		1744	}
		1745
		1746	($x, $y) = (-1, -1)
		1747	unless (defined $x) && (defined $y);
		1748
		1749	# use -1 or undef as default coordinates, not 0, 0
		1750	($x, $y) = ($map->enter_x, $map->enter_y)
		1751	if $x <=0 && $y <= 0;
		1752
		1753	$map->load;
		1754	$map->load_diag;
		1755
		1756	return unless $self->contr->active;
		1757	$self->activate_recursive;
		1758	$self->enter_map ($map, $x, $y);
		1759	}
		1760
		1761	cf::player->attach (
		1762	on_logout => sub {
		1763	my ($pl) = @_;
		1764
		1765	# abort map switching before logout
		1766	if ($pl->ob->{_link_pos}) {
		1767	cf::sync_job {
		1768	$pl->ob->leave_link
		1769	};
		1770	}
		1771	},
		1772	on_login => sub {
		1773	my ($pl) = @_;
		1774
		1775	# try to abort aborted map switching on player login :)
		1776	# should happen only on crashes
		1777	if ($pl->ob->{_link_pos}) {
		1778	$pl->ob->enter_link;
		1779	(async {
		1780	# we need this sleep as the login has a concurrent enter_exit running
		1781	# and this sleep increases chances of the player not ending up in scorn
		1782	$pl->ob->reply (undef,
		1783	"There was an internal problem at your last logout, "
		1784	. "the server will try to bring you to your intended destination in a second.",
		1785	cf::NDI_RED);
		1786	Coro::Timer::sleep 1;
		1787	$pl->ob->leave_link;
		1788	})->prio (2);
		1789	}
		1790	},
		1791	);
		1792
		1793	=item $player_object->goto ($path, $x, $y)
		1794
		1795	=cut
		1796
		1797	sub cf::object::player::goto {
		1798	my ($self, $path, $x, $y) = @_;
		1799
		1800	$self->enter_link;
		1801
		1802	(async {
		1803	my $map = cf::map::find $path;
		1804	$map = $map->customise_for ($self) if $map;
		1805
		1806	# warn "entering ", $map->path, " at ($x, $y)\n"
		1807	# if $map;
		1808
		1809	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1810
		1811	$self->leave_link ($map, $x, $y);
		1812	})->prio (1);
		1813	}
		1814
		1815	=item $player_object->enter_exit ($exit_object)
		1816
		1817	=cut
		1818
		1819	sub parse_random_map_params {
		1820	my ($spec) = @_;
		1821
		1822	my $rmp = { # defaults
		1823	xsize => 10,
		1824	ysize => 10,
		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	# all this does is basically replace the /! path by
		1840	# a new random map path (?random/...) with a seed
		1841	# that depends on the exit object
		1842
		1843	my $rmp = parse_random_map_params $exit->msg;
		1844
		1845	if ($exit->map) {
		1846	$rmp->{region} = $exit->map->region_name;
		1847	$rmp->{origin_map} = $exit->map->path;
		1848	$rmp->{origin_x} = $exit->x;
		1849	$rmp->{origin_y} = $exit->y;
		1850	}
		1851
		1852	$rmp->{random_seed} ||= $exit->random_seed;
		1853
		1854	my $data = cf::to_json $rmp;
		1855	my $md5 = Digest::MD5::md5_hex $data;
		1856
		1857	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1858	aio_write $fh, 0, (length $data), $data, 0;
		1859
		1860	$exit->slaying ("?random/$md5");
		1861	$exit->msg (undef);
		1862	}
		1863	}
		1864
		1865	sub cf::object::player::enter_exit {
		1866	my ($self, $exit) = @_;
		1867
		1868	return unless $self->type == cf::PLAYER;
		1869
		1870	$self->enter_link;
		1871
		1872	(async {
		1873	$self->deactivate_recursive; # just to be sure
		1874	unless (eval {
		1875	prepare_random_map $exit
		1876	if $exit->slaying eq "/!";
		1877
		1878	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1879	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1880
		1881	1;
		1882	}) {
		1883	$self->message ("Something went wrong deep within the crossfire server. "
		1884	. "I'll try to bring you back to the map you were before. "
		1885	. "Please report this to the dungeon master!",
		1886	cf::NDI_UNIQUE | cf::NDI_RED);
		1887
		1888	warn "ERROR in enter_exit: $@";
		1889	$self->leave_link;
		1890	}
		1891	})->prio (1);
		1892	}
		1893
837	=head3 cf::client	1894	=head3 cf::client
838		1895
839	=over 4	1896	=over 4
840		1897
841	=item $client->send_drawinfo ($text, $flags)	1898	=item $client->send_drawinfo ($text, $flags)
…		…
884	on_reply => sub {	1941	on_reply => sub {
885	my ($ns, $msg) = @_;	1942	my ($ns, $msg) = @_;
886		1943
887	# this weird shuffling is so that direct followup queries	1944	# this weird shuffling is so that direct followup queries
888	# get handled first	1945	# get handled first
889	my $queue = delete $ns->{query_queue};	1946	my $queue = delete $ns->{query_queue}
		1947	or return; # be conservative, not sure how that can happen, but we saw a crash here
890		1948
891	(shift @$queue)->[1]->($msg);	1949	(shift @$queue)->[1]->($msg);
892		1950
893	push @{ $ns->{query_queue} }, @$queue;	1951	push @{ $ns->{query_queue} }, @$queue;
894		1952
…		…
900	}	1958	}
901	}	1959	}
902	},	1960	},
903	);	1961	);
904		1962
905	=item $client->coro (\&cb)	1963	=item $client->async (\&cb)
906		1964
907	Create a new coroutine, running the specified callback. The coroutine will	1965	Create a new coroutine, running the specified callback. The coroutine will
908	be automatically cancelled when the client gets destroyed (e.g. on logout,	1966	be automatically cancelled when the client gets destroyed (e.g. on logout,
909	or loss of connection).	1967	or loss of connection).
910		1968
911	=cut	1969	=cut
912		1970
913	sub cf::client::coro {	1971	sub cf::client::async {
914	my ($self, $cb) = @_;	1972	my ($self, $cb) = @_;
915		1973
916	my $coro; $coro = async {	1974	my $coro = &Coro::async ($cb);
917	eval {	1975
918	$cb->();	1976	$coro->on_destroy (sub {
919	};
920	warn $@ if $@;
921	delete $self->{_coro}{$coro+0};	1977	delete $self->{_coro}{$coro+0};
922	};	1978	});
923		1979
924	$self->{_coro}{$coro+0} = $coro;	1980	$self->{_coro}{$coro+0} = $coro;
		1981
		1982	$coro
925	}	1983	}
926		1984
927	cf::client->attach (	1985	cf::client->attach (
928	on_destroy => sub {	1986	on_destroy => sub {
929	my ($ns) = @_;	1987	my ($ns) = @_;
…		…
1093		2151
1094	{	2152	{
1095	my $path = cf::localdir . "/database.pst";	2153	my $path = cf::localdir . "/database.pst";
1096		2154
1097	sub db_load() {	2155	sub db_load() {
1098	warn "loading database $path\n";#d# remove later
1099	$DB = stat $path ? Storable::retrieve $path : { };	2156	$DB = stat $path ? Storable::retrieve $path : { };
1100	}	2157	}
1101		2158
1102	my $pid;	2159	my $pid;
1103		2160
1104	sub db_save() {	2161	sub db_save() {
1105	warn "saving database $path\n";#d# remove later
1106	waitpid $pid, 0 if $pid;	2162	waitpid $pid, 0 if $pid;
1107	if (0 == ($pid = fork)) {	2163	if (0 == ($pid = fork)) {
1108	$DB->{_meta}{version} = 1;	2164	$DB->{_meta}{version} = 1;
1109	Storable::nstore $DB, "$path~";	2165	Storable::nstore $DB, "$path~";
1110	rename "$path~", $path;	2166	rename "$path~", $path;
…		…
1158	open my $fh, "<:utf8", cf::confdir . "/config"	2214	open my $fh, "<:utf8", cf::confdir . "/config"
1159	or return;	2215	or return;
1160		2216
1161	local $/;	2217	local $/;
1162	*CFG = YAML::Syck::Load <$fh>;	2218	*CFG = YAML::Syck::Load <$fh>;
		2219
		2220	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2221
		2222	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2223	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2224
		2225	if (exists $CFG{mlockall}) {
		2226	eval {
		2227	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2228	and die "WARNING: m(un)lockall failed: $!\n";
		2229	};
		2230	warn $@ if $@;
		2231	}
1163	}	2232	}
1164		2233
1165	sub main {	2234	sub main {
		2235	# we must not ever block the main coroutine
		2236	local $Coro::idle = sub {
		2237	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2238	async { Event::one_event };
		2239	};
		2240
1166	cfg_load;	2241	cfg_load;
1167	db_load;	2242	db_load;
1168	load_extensions;	2243	load_extensions;
1169	Event::loop;	2244	Event::loop;
1170	}	2245	}
1171		2246
1172	#############################################################################	2247	#############################################################################
1173	# initialisation	2248	# initialisation and cleanup
1174		2249
		2250	# install some emergency cleanup handlers
		2251	BEGIN {
		2252	for my $signal (qw(INT HUP TERM)) {
		2253	Event->signal (
		2254	data => WF_AUTOCANCEL,
		2255	signal => $signal,
		2256	cb => sub {
		2257	cf::cleanup "SIG$signal";
		2258	},
		2259	);
		2260	}
		2261	}
		2262
		2263	sub emergency_save() {
		2264	my $freeze_guard = cf::freeze_mainloop;
		2265
		2266	warn "enter emergency perl save\n";
		2267
		2268	cf::sync_job {
		2269	# use a peculiar iteration method to avoid tripping on perl
		2270	# refcount bugs in for. also avoids problems with players
		2271	# and maps saved/destroyed asynchronously.
		2272	warn "begin emergency player save\n";
		2273	for my $login (keys %cf::PLAYER) {
		2274	my $pl = $cf::PLAYER{$login} or next;
		2275	$pl->valid or next;
		2276	$pl->save;
		2277	}
		2278	warn "end emergency player save\n";
		2279
		2280	warn "begin emergency map save\n";
		2281	for my $path (keys %cf::MAP) {
		2282	my $map = $cf::MAP{$path} or next;
		2283	$map->valid or next;
		2284	$map->save;
		2285	}
		2286	warn "end emergency map save\n";
		2287	};
		2288
		2289	warn "leave emergency perl save\n";
		2290	}
		2291
1175	sub _perl_reload(&) {	2292	sub reload() {
1176	my ($msg) = @_;	2293	# can/must only be called in main
		2294	if ($Coro::current != $Coro::main) {
		2295	warn "can only reload from main coroutine\n";
		2296	return;
		2297	}
1177		2298
1178	$msg->("reloading...");	2299	warn "reloading...";
		2300
		2301	warn "freezing server";
		2302	my $guard = freeze_mainloop;
		2303	cf::emergency_save;
		2304
		2305	warn "sync database to disk";
		2306	cf::db_sync;
		2307	IO::AIO::flush;
1179		2308
1180	eval {	2309	eval {
		2310	# if anything goes wrong in here, we should simply crash as we already saved
		2311
1181	# cancel all watchers	2312	warn "cancel all watchers";
1182	for (Event::all_watchers) {	2313	for (Event::all_watchers) {
1183	$_->cancel if $_->data & WF_AUTOCANCEL;	2314	$_->cancel if $_->data & WF_AUTOCANCEL;
1184	}	2315	}
1185		2316
		2317	warn "cancel all extension coros";
		2318	$_->cancel for values %EXT_CORO;
		2319	%EXT_CORO = ();
		2320
		2321	warn "remove commands";
		2322	%COMMAND = ();
		2323
		2324	warn "remove ext commands";
		2325	%EXTCMD = ();
		2326
1186	# unload all extensions	2327	warn "unload/nuke all extensions";
1187	for (@exts) {	2328	for my $pkg (@EXTS) {
1188	$msg->("unloading <$_>");	2329	warn "... unloading $pkg";
1189	unload_extension $_;	2330
		2331	if (my $cb = $pkg->can ("unload")) {
		2332	eval {
		2333	$cb->($pkg);
		2334	1
		2335	} or warn "$pkg unloaded, but with errors: $@";
1190	}	2336	}
1191		2337
		2338	warn "... nuking $pkg";
		2339	Symbol::delete_package $pkg;
		2340	}
		2341
1192	# unload all modules loaded from $LIBDIR	2342	warn "unload all perl modules loaded from $LIBDIR";
1193	while (my ($k, $v) = each %INC) {	2343	while (my ($k, $v) = each %INC) {
1194	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2344	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1195		2345
1196	$msg->("removing <$k>");	2346	warn "removing <$k>";
1197	delete $INC{$k};	2347	delete $INC{$k};
1198		2348
1199	$k =~ s/\.pm$//;	2349	$k =~ s/\.pm$//;
1200	$k =~ s/\//::/g;	2350	$k =~ s/\//::/g;
1201		2351
…		…
1204	}	2354	}
1205		2355
1206	Symbol::delete_package $k;	2356	Symbol::delete_package $k;
1207	}	2357	}
1208		2358
1209	# sync database to disk
1210	cf::db_sync;
1211
1212	# get rid of safe::, as good as possible	2359	warn "get rid of safe::, as good as possible";
1213	Symbol::delete_package "safe::$_"	2360	Symbol::delete_package "safe::$_"
1214	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2361	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1215		2362
1216	# remove register_script_function callbacks
1217	# TODO
1218
1219	# unload cf.pm "a bit"	2363	warn "unload cf.pm \"a bit\"";
1220	delete $INC{"cf.pm"};	2364	delete $INC{"cf.pm"};
1221		2365
1222	# don't, removes xs symbols, too,	2366	# don't, removes xs symbols, too,
1223	# and global variables created in xs	2367	# and global variables created in xs
1224	#Symbol::delete_package __PACKAGE__;	2368	#Symbol::delete_package __PACKAGE__;
1225		2369
1226	# reload cf.pm
1227	$msg->("reloading cf.pm");	2370	warn "reloading cf.pm";
1228	require cf;	2371	require cf;
1229	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2372	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1230		2373
1231	# load config and database again	2374	warn "load config and database again";
1232	cf::cfg_load;	2375	cf::cfg_load;
1233	cf::db_load;	2376	cf::db_load;
1234		2377
1235	# load extensions	2378	warn "load extensions";
1236	$msg->("load extensions");
1237	cf::load_extensions;	2379	cf::load_extensions;
1238		2380
1239	# reattach attachments to objects	2381	warn "reattach attachments to objects/players";
1240	$msg->("reattach");
1241	_global_reattach;	2382	_global_reattach;
		2383	warn "reattach attachments to maps";
		2384	reattach $_ for values %MAP;
1242	};	2385	};
1243	$msg->($@) if $@;
1244		2386
1245	$msg->("reloaded");	2387	if ($@) {
		2388	warn $@;
		2389	warn "error while reloading, exiting.";
		2390	exit 1;
		2391	}
		2392
		2393	warn "reloaded";
1246	};	2394	};
1247		2395
1248	sub perl_reload() {
1249	_perl_reload {
1250	warn $_[0];
1251	print "$_[0]\n";
1252	};
1253	}
1254
1255	register "<global>", __PACKAGE__;
1256
1257	register_command "perl-reload" => sub {	2396	register_command "reload" => sub {
1258	my ($who, $arg) = @_;	2397	my ($who, $arg) = @_;
1259		2398
1260	if ($who->flag (FLAG_WIZ)) {	2399	if ($who->flag (FLAG_WIZ)) {
1261	_perl_reload {	2400	$who->message ("start of reload.");
1262	warn $_[0];	2401	reload;
1263	$who->message ($_[0]);	2402	$who->message ("end of reload.");
1264	};
1265	}	2403	}
1266	};	2404	};
1267		2405
1268	unshift @INC, $LIBDIR;	2406	unshift @INC, $LIBDIR;
1269		2407
1270	$TICK_WATCHER = Event->timer (	2408	$TICK_WATCHER = Event->timer (
		2409	reentrant => 0,
1271	prio => 0,	2410	prio => 0,
1272	at => $NEXT_TICK || 1,	2411	at => $NEXT_TICK || $TICK,
1273	data => WF_AUTOCANCEL,	2412	data => WF_AUTOCANCEL,
1274	cb => sub {	2413	cb => sub {
		2414	$NOW = Event::time;
		2415
1275	cf::server_tick; # one server iteration	2416	cf::server_tick; # one server iteration
1276		2417	$RUNTIME += $TICK;
1277	my $NOW = Event::time;
1278	$NEXT_TICK += $TICK;	2418	$NEXT_TICK += $TICK;
1279		2419
		2420	$WAIT_FOR_TICK->broadcast;
		2421	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2422
1280	# if we are delayed by four ticks or more, skip them all	2423	# if we are delayed by four ticks or more, skip them all
1281	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2424	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1282		2425
1283	$TICK_WATCHER->at ($NEXT_TICK);	2426	$TICK_WATCHER->at ($NEXT_TICK);
1284	$TICK_WATCHER->start;	2427	$TICK_WATCHER->start;
1285	},	2428	},
1286	);	2429	);
1287		2430
1288	IO::AIO::max_poll_time $TICK * 0.2;	2431	IO::AIO::max_poll_time $TICK * 0.2;
1289		2432
		2433	$AIO_POLL_WATCHER = Event->io (
1290	Event->io (fd => IO::AIO::poll_fileno,	2434	fd => IO::AIO::poll_fileno,
1291	poll => 'r',	2435	poll => 'r',
1292	prio => 5,	2436	prio => 5,
1293	data => WF_AUTOCANCEL,	2437	data => WF_AUTOCANCEL,
1294	cb => \&IO::AIO::poll_cb);	2438	cb => \&IO::AIO::poll_cb,
		2439	);
		2440
		2441	$WRITE_RUNTIME_WATCHER = Event->timer (
		2442	data => WF_AUTOCANCEL,
		2443	after => 0,
		2444	interval => 10,
		2445	cb => sub {
		2446	(Coro::unblock_sub {
		2447	write_runtime
		2448	or warn "ERROR: unable to write runtime file: $!";
		2449	})->();
		2450	},
		2451	);
		2452
		2453	END { cf::emergency_save }
1295		2454
1296	1	2455	1
1297		2456

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