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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 1.250 by root, Wed Apr 18 14:24:10 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
18		24
19	use IO::AIO 2.3;	25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
20	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
21	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
22		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
24		41
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
27		44
28	$Coro::main->prio (Coro::PRIO_MIN);	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29		46
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		48
32	our %COMMAND = ();	49	our %COMMAND = ();
33	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
35		56
		57	our $RELOAD; # number of reloads so far
36	our @EVENT;	58	our @EVENT;
37	our $LIBDIR = datadir . "/ext";	59	our $LIBDIR = datadir . "/ext";
38		60
39	our $TICK = MAX_TIME * 1e-6;	61	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
40	our $TICK_WATCHER;	62	our $TICK_WATCHER;
		63	our $AIO_POLL_WATCHER;
		64	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	65	our $NEXT_TICK;
		66	our $NOW;
		67	our $USE_FSYNC = 1; # use fsync to write maps - default off
		68
		69	our $BDB_POLL_WATCHER;
		70	our $DB_ENV;
42		71
43	our %CFG;	72	our %CFG;
44		73
45	our $UPTIME; $UPTIME ||= time;	74	our $UPTIME; $UPTIME ||= time;
		75	our $RUNTIME;
		76
		77	our %PLAYER; # all users
		78	our %MAP; # all maps
		79	our $LINK_MAP; # the special {link} map, which is always available
		80	our $RANDOM_MAPS = cf::localdir . "/random";
		81	our $BDB_ENV_DIR = cf::localdir . "/db";
		82
		83	# used to convert map paths into valid unix filenames by replacing / by ∕
		84	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		85
		86	binmode STDOUT;
		87	binmode STDERR;
		88
		89	# read virtual server time, if available
		90	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		91	open my $fh, "<", cf::localdir . "/runtime"
		92	or die "unable to read runtime file: $!";
		93	$RUNTIME = <$fh> + 0.;
		94	}
		95
		96	mkdir cf::localdir;
		97	mkdir cf::localdir . "/" . cf::playerdir;
		98	mkdir cf::localdir . "/" . cf::tmpdir;
		99	mkdir cf::localdir . "/" . cf::uniquedir;
		100	mkdir $RANDOM_MAPS;
		101	mkdir $BDB_ENV_DIR;
		102
		103	our $EMERGENCY_POSITION;
		104
		105	sub cf::map::normalise;
46		106
47	#############################################################################	107	#############################################################################
48		108
49	=head2 GLOBAL VARIABLES	109	=head2 GLOBAL VARIABLES
50		110
51	=over 4	111	=over 4
52		112
53	=item $cf::UPTIME	113	=item $cf::UPTIME
54		114
55	The timestamp of the server start (so not actually an uptime).	115	The timestamp of the server start (so not actually an uptime).
		116
		117	=item $cf::RUNTIME
		118
		119	The time this server has run, starts at 0 and is increased by $cf::TICK on
		120	every server tick.
56		121
57	=item $cf::LIBDIR	122	=item $cf::LIBDIR
58		123
59	The perl library directory, where extensions and cf-specific modules can	124	The perl library directory, where extensions and cf-specific modules can
60	be found. It will be added to C<@INC> automatically.	125	be found. It will be added to C<@INC> automatically.
61		126
		127	=item $cf::NOW
		128
		129	The time of the last (current) server tick.
		130
62	=item $cf::TICK	131	=item $cf::TICK
63		132
64	The interval between server ticks, in seconds.	133	The interval between server ticks, in seconds.
65		134
66	=item %cf::CFG	135	=item %cf::CFG
67		136
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	137	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	138	from wherever your confdir points to.
		139
		140	=item cf::wait_for_tick, cf::wait_for_tick_begin
		141
		142	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		143	returns directly I<after> the tick processing (and consequently, can only wake one process
		144	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
70		145
71	=back	146	=back
72		147
73	=cut	148	=cut
74		149
75	BEGIN {	150	BEGIN {
76	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
77	my $msg = join "", @_;	152	my $msg = join "", @_;
		153
78	$msg .= "\n"	154	$msg .= "\n"
79	unless $msg =~ /\n$/;	155	unless $msg =~ /\n$/;
80		156
81	print STDERR "cfperl: $msg";	157	$msg =~ s/([\x00-\x09\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		158
		159	utf8::encode $msg;
82	LOG llevError, "cfperl: $msg";	160	LOG llevError, $msg;
83	};	161	};
84	}	162	}
85		163
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	164	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	165	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
105		183
106	$Event::DIED = sub {	184	$Event::DIED = sub {
107	warn "error in event callback: @_";	185	warn "error in event callback: @_";
108	};	186	};
109		187
110	my %ext_pkg;
111	my @exts;
112	my @hook;
113
114	=head2 UTILITY FUNCTIONS	188	=head2 UTILITY FUNCTIONS
115		189
116	=over 4	190	=over 4
117		191
118	=cut	192	=item dumpval $ref
119		193
		194	=cut
		195
		196	sub dumpval {
		197	eval {
		198	local $SIG{__DIE__};
		199	my $d;
		200	if (1) {
		201	$d = new Data::Dumper([$_[0]], ["*var"]);
		202	$d->Terse(1);
		203	$d->Indent(2);
		204	$d->Quotekeys(0);
		205	$d->Useqq(1);
		206	#$d->Bless(...);
		207	$d->Seen($_[1]) if @_ > 1;
		208	$d = $d->Dump();
		209	}
		210	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		211	$d
		212	} || "[unable to dump $_[0]: '$@']";
		213	}
		214
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	215	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
121		216
122	=item $ref = cf::from_json $json	217	=item $ref = cf::from_json $json
123		218
124	Converts a JSON string into the corresponding perl data structure.	219	Converts a JSON string into the corresponding perl data structure.
125		220
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	221	=item $json = cf::to_json $ref
134		222
135	Converts a perl data structure into its JSON representation.	223	Converts a perl data structure into its JSON representation.
136		224
137	=cut	225	=item cf::lock_wait $string
138		226
139	sub to_json($) {	227	Wait until the given lock is available. See cf::lock_acquire.
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	228
141	JSON::Syck::Dump $_[0]	229	=item my $lock = cf::lock_acquire $string
		230
		231	Wait until the given lock is available and then acquires it and returns
		232	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		233	for example when the coroutine gets canceled), the lock is automatically
		234	returned.
		235
		236	Lock names should begin with a unique identifier (for example, cf::map::find
		237	uses map_find and cf::map::load uses map_load).
		238
		239	=cut
		240
		241	our %LOCK;
		242
		243	sub lock_wait($) {
		244	my ($key) = @_;
		245
		246	# wait for lock, if any
		247	while ($LOCK{$key}) {
		248	push @{ $LOCK{$key} }, $Coro::current;
		249	Coro::schedule;
		250	}
		251	}
		252
		253	sub lock_acquire($) {
		254	my ($key) = @_;
		255
		256	# wait, to be sure we are not locked
		257	lock_wait $key;
		258
		259	$LOCK{$key} = [];
		260
		261	Coro::guard {
		262	# wake up all waiters, to be on the safe side
		263	$_->ready for @{ delete $LOCK{$key} };
		264	}
		265	}
		266
		267	sub freeze_mainloop {
		268	return unless $TICK_WATCHER->is_active;
		269
		270	my $guard = Coro::guard {
		271	$TICK_WATCHER->start;
		272	};
		273	$TICK_WATCHER->stop;
		274	$guard
		275	}
		276
		277	=item cf::async { BLOCK }
		278
		279	Currently the same as Coro::async_pool, meaning you cannot use
		280	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		281	thing you are allowed to do is call C<prio> on it.
		282
		283	=cut
		284
		285	BEGIN { *async = \&Coro::async_pool }
		286
		287	=item cf::sync_job { BLOCK }
		288
		289	The design of crossfire+ requires that the main coro ($Coro::main) is
		290	always able to handle events or runnable, as crossfire+ is only partly
		291	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		292
		293	If it must be done, put the blocking parts into C<sync_job>. This will run
		294	the given BLOCK in another coroutine while waiting for the result. The
		295	server will be frozen during this time, so the block should either finish
		296	fast or be very important.
		297
		298	=cut
		299
		300	sub sync_job(&) {
		301	my ($job) = @_;
		302
		303	if ($Coro::current == $Coro::main) {
		304	# this is the main coro, too bad, we have to block
		305	# till the operation succeeds, freezing the server :/
		306
		307	# TODO: use suspend/resume instead
		308	# (but this is cancel-safe)
		309	my $freeze_guard = freeze_mainloop;
		310
		311	my $busy = 1;
		312	my @res;
		313
		314	(async {
		315	@res = eval { $job->() };
		316	warn $@ if $@;
		317	undef $busy;
		318	})->prio (Coro::PRIO_MAX);
		319
		320	while ($busy) {
		321	Coro::cede or Event::one_event;
		322	}
		323
		324	wantarray ? @res : $res[0]
		325	} else {
		326	# we are in another coroutine, how wonderful, everything just works
		327
		328	$job->()
		329	}
		330	}
		331
		332	=item $coro = cf::async_ext { BLOCK }
		333
		334	Like async, but this coro is automatically being canceled when the
		335	extension calling this is being unloaded.
		336
		337	=cut
		338
		339	sub async_ext(&) {
		340	my $cb = shift;
		341
		342	my $coro = &Coro::async ($cb);
		343
		344	$coro->on_destroy (sub {
		345	delete $EXT_CORO{$coro+0};
		346	});
		347	$EXT_CORO{$coro+0} = $coro;
		348
		349	$coro
		350	}
		351
		352	sub write_runtime {
		353	my $guard = cf::lock_acquire "write_runtime";
		354
		355	my $runtime = cf::localdir . "/runtime";
		356
		357	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		358	or return;
		359
		360	my $value = $cf::RUNTIME + 90 + 10;
		361	# 10 is the runtime save interval, for a monotonic clock
		362	# 60 allows for the watchdog to kill the server.
		363
		364	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		365	and return;
		366
		367	# always fsync - this file is important
		368	aio_fsync $fh
		369	and return;
		370
		371	close $fh
		372	or return;
		373
		374	aio_rename "$runtime~", $runtime
		375	and return;
		376
		377	1
		378	}
		379
		380	=item cf::datalog type => key => value, ...
		381
		382	Log a datalog packet of the given type with the given key-value pairs.
		383
		384	=cut
		385
		386	sub datalog($@) {
		387	my ($type, %kv) = @_;
		388	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
142	}	389	}
143		390
144	=back	391	=back
145		392
146	=cut	393	=cut
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	524	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	525	our @CB_MAP = ();
279		526
280	my %attachment;	527	my %attachment;
281		528
		529	sub cf::attachable::thawer_merge {
		530	# simply override everything except _meta
		531	local $_[0]{_meta};
		532	%{$_[0]} = %{$_[1]};
		533	}
		534
282	sub _attach_cb($$$$) {	535	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	536	my ($registry, $event, $prio, $cb) = @_;
284		537
285	use sort 'stable';	538	use sort 'stable';
286		539
…		…
454	=cut	707	=cut
455		708
456	#############################################################################	709	#############################################################################
457	# object support	710	# object support
458		711
		712	sub reattach {
		713	# basically do the same as instantiate, without calling instantiate
		714	my ($obj) = @_;
		715
		716	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		717
		718	my $registry = $obj->registry;
		719
		720	@$registry = ();
		721
		722	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		723
		724	for my $name (keys %{ $obj->{_attachment} || {} }) {
		725	if (my $attach = $attachment{$name}) {
		726	for (@$attach) {
		727	my ($klass, @attach) = @$_;
		728	_attach $registry, $klass, @attach;
		729	}
		730	} else {
		731	warn "object uses attachment '$name' that is not available, postponing.\n";
		732	}
		733	}
		734	}
		735
459	cf::attachable->attach (	736	cf::attachable->attach (
460	prio => -1000000,	737	prio => -1000000,
461	on_instantiate => sub {	738	on_instantiate => sub {
462	my ($obj, $data) = @_;	739	my ($obj, $data) = @_;
463		740
…		…
467	my ($name, $args) = @$_;	744	my ($name, $args) = @$_;
468		745
469	$obj->attach ($name, %{$args || {} });	746	$obj->attach ($name, %{$args || {} });
470	}	747	}
471	},	748	},
472	on_reattach => sub {	749	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 {	750	on_clone => sub {
493	my ($src, $dst) = @_;	751	my ($src, $dst) = @_;
494		752
495	@{$dst->registry} = @{$src->registry};	753	@{$dst->registry} = @{$src->registry};
496		754
…		…
502	);	760	);
503		761
504	sub object_freezer_save {	762	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	763	my ($filename, $rdata, $objs) = @_;
506		764
		765	sync_job {
507	if (length $$rdata) {	766	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	767	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	768	$filename, length $$rdata, scalar @$objs;
510		769
511	if (open my $fh, ">:raw", "$filename~") {	770	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	771	chmod SAVE_MODE, $fh;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	772	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		773	aio_fsync $fh if $cf::USE_FSYNC;
519	close $fh;	774	close $fh;
		775
		776	if (@$objs) {
		777	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		778	chmod SAVE_MODE, $fh;
		779	my $data = Storable::nfreeze { version => 1, objs => $objs };
		780	aio_write $fh, 0, (length $data), $data, 0;
		781	aio_fsync $fh if $cf::USE_FSYNC;
		782	close $fh;
520	rename "$filename.pst~", "$filename.pst";	783	aio_rename "$filename.pst~", "$filename.pst";
		784	}
		785	} else {
		786	aio_unlink "$filename.pst";
		787	}
		788
		789	aio_rename "$filename~", $filename;
521	} else {	790	} else {
522	unlink "$filename.pst";	791	warn "FATAL: $filename~: $!\n";
523	}	792	}
524
525	rename "$filename~", $filename;
526	} else {	793	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	794	aio_unlink $filename;
531	unlink "$filename.pst";	795	aio_unlink "$filename.pst";
		796	}
532	}	797	}
533	}	798	}
534		799
535	sub object_freezer_as_string {	800	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	801	my ($rdata, $objs) = @_;
…		…
541	}	806	}
542		807
543	sub object_thawer_load {	808	sub object_thawer_load {
544	my ($filename) = @_;	809	my ($filename) = @_;
545		810
546	local $/;	811	my ($data, $av);
547		812
548	my $av;	813	(aio_load $filename, $data) >= 0
		814	or return;
549		815
550	#TODO: use sysread etc.	816	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	817	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	818	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	819	$av = eval { (Storable::thaw $av)->{objs} };
555	}	820	}
		821
		822	warn sprintf "loading %s (%d)\n",
		823	$filename, length $data, scalar @{$av || []};#d#
556	return ($data, $av);	824	return ($data, $av);
557	}
558
559	()
560	}	825	}
561		826
562	#############################################################################	827	#############################################################################
563	# command handling &c	828	# command handling &c
564		829
…		…
588	=cut	853	=cut
589		854
590	sub register_extcmd {	855	sub register_extcmd {
591	my ($name, $cb) = @_;	856	my ($name, $cb) = @_;
592		857
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	858	$EXTCMD{$name} = $cb;
597	}	859	}
598		860
599	cf::player->attach (	861	cf::player->attach (
600	on_command => sub {	862	on_command => sub {
601	my ($pl, $name, $params) = @_;	863	my ($pl, $name, $params) = @_;
…		…
614		876
615	my $msg = eval { from_json $buf };	877	my $msg = eval { from_json $buf };
616		878
617	if (ref $msg) {	879	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	880	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	881	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	882	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	883	}
622	}	884	}
623	} else {	885	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	886	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		888
627	cf::override;	889	cf::override;
628	},	890	},
629	);	891	);
630		892
631	sub register {
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	893	sub load_extension {
638	my ($path) = @_;	894	my ($path) = @_;
639		895
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	896	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
641	my $base = $1;	897	my $base = $1;
642	my $pkg = $1;	898	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;	899	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";	900	$pkg = "ext::$pkg";
645		901
646	warn "loading '$path' into '$pkg'\n";	902	warn "... loading '$path' into '$pkg'\n";
647		903
648	open my $fh, "<:utf8", $path	904	open my $fh, "<:utf8", $path
649	or die "$path: $!";	905	or die "$path: $!";
650		906
651	my $source =	907	my $source =
652	"package $pkg; use strict; use utf8;\n"	908	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"	909	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })	910	. (do { local $/; <$fh> })
655	. "\n};\n1";	911	. "\n};\n1";
656		912
657	eval $source	913	unless (eval $source) {
658	or die $@ ? "$path: $@\n"	914	my $msg = $@ ? "$path: $@\n"
659	: "extension disabled.\n";	915	: "extension disabled.\n";
660		916	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
661	push @exts, $pkg;	917	warn $@;
662	$ext_pkg{$base} = $pkg;	918	warn "mandatory extension failed to load, exiting.\n";
663		919	exit 1;
664	# no strict 'refs';	920	}
665	# @{"$pkg\::ISA"} = ext::;	921	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	# }	922	}
680		923
681	# remove commands	924	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	}	925	}
706		926
707	sub load_extensions {	927	sub load_extensions {
708	for my $ext (<$LIBDIR/*.ext>) {	928	for my $ext (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	929	next unless -r $ext;
…		…
713	} or warn "$ext not loaded: $@";	933	} or warn "$ext not loaded: $@";
714	}	934	}
715	}	935	}
716		936
717	#############################################################################	937	#############################################################################
718	# load/save/clean perl data associated with a map
719		938
720	*cf::mapsupport::on_clean = sub {	939	=head2 CORE EXTENSIONS
		940
		941	Functions and methods that extend core crossfire objects.
		942
		943	=cut
		944
		945	package cf::player;
		946
		947	use Coro::AIO;
		948
		949	=head3 cf::player
		950
		951	=over 4
		952
		953	=item cf::player::find $login
		954
		955	Returns the given player object, loading it if necessary (might block).
		956
		957	=cut
		958
		959	sub playerdir($) {
		960	cf::localdir
		961	. "/"
		962	. cf::playerdir
		963	. "/"
		964	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		965	}
		966
		967	sub path($) {
		968	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		969
		970	(playerdir $login) . "/playerdata"
		971	}
		972
		973	sub find_active($) {
		974	$cf::PLAYER{$_[0]}
		975	and $cf::PLAYER{$_[0]}->active
		976	and $cf::PLAYER{$_[0]}
		977	}
		978
		979	sub exists($) {
		980	my ($login) = @_;
		981
		982	$cf::PLAYER{$login}
		983	or cf::sync_job { !aio_stat path $login }
		984	}
		985
		986	sub find($) {
		987	return $cf::PLAYER{$_[0]} || do {
		988	my $login = $_[0];
		989
		990	my $guard = cf::lock_acquire "user_find:$login";
		991
		992	$cf::PLAYER{$_[0]} || do {
		993	# rename old playerfiles to new ones
		994	#TODO: remove when no longer required
		995	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		996	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		997	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		998	aio_unlink +(playerdir $login) . "/$login.pl";
		999
		1000	my $pl = load_pl path $login
		1001	or return;
		1002	$cf::PLAYER{$login} = $pl
		1003	}
		1004	}
		1005	}
		1006
		1007	sub save($) {
		1008	my ($pl) = @_;
		1009
		1010	return if $pl->{deny_save};
		1011
		1012	my $path = path $pl;
		1013	my $guard = cf::lock_acquire "user_save:$path";
		1014
		1015	return if $pl->{deny_save};
		1016
		1017	aio_mkdir playerdir $pl, 0770;
		1018	$pl->{last_save} = $cf::RUNTIME;
		1019
		1020	$pl->save_pl ($path);
		1021	Coro::cede;
		1022	}
		1023
		1024	sub new($) {
		1025	my ($login) = @_;
		1026
		1027	my $self = create;
		1028
		1029	$self->ob->name ($login);
		1030	$self->{deny_save} = 1;
		1031
		1032	$cf::PLAYER{$login} = $self;
		1033
		1034	$self
		1035	}
		1036
		1037	=item $pl->quit_character
		1038
		1039	Nukes the player without looking back. If logged in, the connection will
		1040	be destroyed. May block for a long time.
		1041
		1042	=cut
		1043
		1044	sub quit_character {
		1045	my ($pl) = @_;
		1046
		1047	my $name = $pl->ob->name;
		1048
		1049	$pl->{deny_save} = 1;
		1050	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1051
		1052	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1053	$pl->deactivate;
		1054	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1055	$pl->ns->destroy if $pl->ns;
		1056
		1057	my $path = playerdir $pl;
		1058	my $temp = "$path~$cf::RUNTIME~deleting~";
		1059	aio_rename $path, $temp;
		1060	delete $cf::PLAYER{$pl->ob->name};
		1061	$pl->destroy;
		1062
		1063	my $prefix = qr<^~\Q$name\E/>;
		1064
		1065	# nuke player maps
		1066	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1067
		1068	IO::AIO::aio_rmtree $temp;
		1069	}
		1070
		1071	=item $pl->kick
		1072
		1073	Kicks a player out of the game. This destroys the connection.
		1074
		1075	=cut
		1076
		1077	sub kick {
		1078	my ($pl, $kicker) = @_;
		1079
		1080	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1081	$pl->killer ("kicked");
		1082	$pl->ns->destroy;
		1083	}
		1084
		1085	=item cf::player::list_logins
		1086
		1087	Returns am arrayref of all valid playernames in the system, can take a
		1088	while and may block, so not sync_job-capable, ever.
		1089
		1090	=cut
		1091
		1092	sub list_logins {
		1093	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1094	or return [];
		1095
		1096	my @logins;
		1097
		1098	for my $login (@$dirs) {
		1099	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1100	aio_read $fh, 0, 512, my $buf, 0 or next;
		1101	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1102
		1103	utf8::decode $login;
		1104	push @logins, $login;
		1105	}
		1106
		1107	\@logins
		1108	}
		1109
		1110	=item $player->maps
		1111
		1112	Returns an arrayref of map paths that are private for this
		1113	player. May block.
		1114
		1115	=cut
		1116
		1117	sub maps($) {
		1118	my ($pl) = @_;
		1119
		1120	$pl = ref $pl ? $pl->ob->name : $pl;
		1121
		1122	my $files = aio_readdir playerdir $pl
		1123	or return;
		1124
		1125	my @paths;
		1126
		1127	for (@$files) {
		1128	utf8::decode $_;
		1129	next if /\.(?:pl|pst)$/;
		1130	next unless /^$PATH_SEP/o;
		1131
		1132	push @paths, cf::map::normalise "~$pl/$_";
		1133	}
		1134
		1135	\@paths
		1136	}
		1137
		1138	=item $player->ext_reply ($msgid, %msg)
		1139
		1140	Sends an ext reply to the player.
		1141
		1142	=cut
		1143
		1144	sub ext_reply($$%) {
		1145	my ($self, $id, %msg) = @_;
		1146
		1147	$msg{msgid} = $id;
		1148
		1149	$self->send ("ext " . cf::to_json \%msg);
		1150	}
		1151
		1152	=item $player->ext_event ($type, %msg)
		1153
		1154	Sends an ext event to the client.
		1155
		1156	=cut
		1157
		1158	sub ext_event($$%) {
		1159	my ($self, $type, %msg) = @_;
		1160
		1161	$self->ns->ext_event ($type, %msg);
		1162	}
		1163
		1164	=head3 cf::region
		1165
		1166	=over 4
		1167
		1168	=cut
		1169
		1170	package cf::region;
		1171
		1172	=item cf::region::find_by_path $path
		1173
		1174	Tries to decuce the probable region for a map knowing only its path.
		1175
		1176	=cut
		1177
		1178	sub find_by_path($) {
		1179	my ($path) = @_;
		1180
		1181	my ($match, $specificity);
		1182
		1183	for my $region (list) {
		1184	if ($region->match && $path =~ $region->match) {
		1185	($match, $specificity) = ($region, $region->specificity)
		1186	if $region->specificity > $specificity;
		1187	}
		1188	}
		1189
		1190	$match
		1191	}
		1192
		1193	=back
		1194
		1195	=head3 cf::map
		1196
		1197	=over 4
		1198
		1199	=cut
		1200
		1201	package cf::map;
		1202
		1203	use Fcntl;
		1204	use Coro::AIO;
		1205
		1206	use overload
		1207	'""' => \&as_string,
		1208	fallback => 1;
		1209
		1210	our $MAX_RESET = 3600;
		1211	our $DEFAULT_RESET = 3000;
		1212
		1213	sub generate_random_map {
		1214	my ($self, $rmp) = @_;
		1215	# mit "rum" bekleckern, nicht
		1216	$self->_create_random_map (
		1217	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1218	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1219	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1220	$rmp->{exit_on_final_map},
		1221	$rmp->{xsize}, $rmp->{ysize},
		1222	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1223	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1224	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1225	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1226	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1227	(cf::region::find $rmp->{region}), $rmp->{custom}
		1228	)
		1229	}
		1230
		1231	=item cf::map->register ($regex, $prio)
		1232
		1233	Register a handler for the map path matching the given regex at the
		1234	givne priority (higher is better, built-in handlers have priority 0, the
		1235	default).
		1236
		1237	=cut
		1238
		1239	sub register {
		1240	my (undef, $regex, $prio) = @_;
		1241	my $pkg = caller;
		1242
		1243	no strict;
		1244	push @{"$pkg\::ISA"}, __PACKAGE__;
		1245
		1246	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1247	}
		1248
		1249	# also paths starting with '/'
		1250	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1251
		1252	sub thawer_merge {
		1253	my ($self, $merge) = @_;
		1254
		1255	# we have to keep some variables in memory intact
		1256	local $self->{path};
		1257	local $self->{load_path};
		1258	local $self->{deny_save};
		1259	local $self->{deny_reset};
		1260
		1261	$self->SUPER::thawer_merge ($merge);
		1262	}
		1263
		1264	sub normalise {
		1265	my ($path, $base) = @_;
		1266
		1267	$path = "$path"; # make sure its a string
		1268
		1269	$path =~ s/\.map$//;
		1270
		1271	# map plan:
		1272	#
		1273	# /! non-realised random map exit (special hack!)
		1274	# {... are special paths that are not being touched
		1275	# ?xxx/... are special absolute paths
		1276	# ?random/... random maps
		1277	# /... normal maps
		1278	# ~user/... per-player map of a specific user
		1279
		1280	$path =~ s/$PATH_SEP/\//go;
		1281
		1282	# treat it as relative path if it starts with
		1283	# something that looks reasonable
		1284	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1285	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1286
		1287	$base =~ s{[^/]+/?$}{};
		1288	$path = "$base/$path";
		1289	}
		1290
		1291	for ($path) {
		1292	redo if s{//}{/};
		1293	redo if s{/\.?/}{/};
		1294	redo if s{/[^/]+/\.\./}{/};
		1295	}
		1296
		1297	$path
		1298	}
		1299
		1300	sub new_from_path {
		1301	my (undef, $path, $base) = @_;
		1302
		1303	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1304
		1305	$path = normalise $path, $base;
		1306
		1307	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1308	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1309	my $self = bless cf::map::new, $pkg;
		1310	$self->{path} = $path; $self->path ($path);
		1311	$self->init; # pass $1 etc.
		1312	return $self;
		1313	}
		1314	}
		1315
		1316	Carp::carp "unable to resolve path '$path' (base '$base').";
		1317	()
		1318	}
		1319
		1320	sub init {
		1321	my ($self) = @_;
		1322
		1323	$self
		1324	}
		1325
		1326	sub as_string {
		1327	my ($self) = @_;
		1328
		1329	"$self->{path}"
		1330	}
		1331
		1332	# the displayed name, this is a one way mapping
		1333	sub visible_name {
		1334	&as_string
		1335	}
		1336
		1337	# the original (read-only) location
		1338	sub load_path {
		1339	my ($self) = @_;
		1340
		1341	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1342	}
		1343
		1344	# the temporary/swap location
		1345	sub save_path {
		1346	my ($self) = @_;
		1347
		1348	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1349	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1350	}
		1351
		1352	# the unique path, undef == no special unique path
		1353	sub uniq_path {
		1354	my ($self) = @_;
		1355
		1356	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1357	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1358	}
		1359
		1360	# and all this just because we cannot iterate over
		1361	# all maps in C++...
		1362	sub change_all_map_light {
		1363	my ($change) = @_;
		1364
		1365	$_->change_map_light ($change)
		1366	for grep $_->outdoor, values %cf::MAP;
		1367	}
		1368
		1369	sub unlink_save {
		1370	my ($self) = @_;
		1371
		1372	utf8::encode (my $save = $self->save_path);
		1373	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1374	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1375	}
		1376
		1377	sub load_header_from($) {
		1378	my ($self, $path) = @_;
		1379
		1380	utf8::encode $path;
		1381	#aio_open $path, O_RDONLY, 0
		1382	# or return;
		1383
		1384	$self->_load_header ($path)
		1385	or return;
		1386
		1387	$self->{load_path} = $path;
		1388
		1389	1
		1390	}
		1391
		1392	sub load_header_orig {
		1393	my ($self) = @_;
		1394
		1395	$self->load_header_from ($self->load_path)
		1396	}
		1397
		1398	sub load_header_temp {
		1399	my ($self) = @_;
		1400
		1401	$self->load_header_from ($self->save_path)
		1402	}
		1403
		1404	sub prepare_temp {
		1405	my ($self) = @_;
		1406
		1407	$self->last_access ((delete $self->{last_access})
		1408	|| $cf::RUNTIME); #d#
		1409	# safety
		1410	$self->{instantiate_time} = $cf::RUNTIME
		1411	if $self->{instantiate_time} > $cf::RUNTIME;
		1412	}
		1413
		1414	sub prepare_orig {
		1415	my ($self) = @_;
		1416
		1417	$self->{load_original} = 1;
		1418	$self->{instantiate_time} = $cf::RUNTIME;
		1419	$self->last_access ($cf::RUNTIME);
		1420	$self->instantiate;
		1421	}
		1422
		1423	sub load_header {
		1424	my ($self) = @_;
		1425
		1426	if ($self->load_header_temp) {
		1427	$self->prepare_temp;
		1428	} else {
		1429	$self->load_header_orig
		1430	or return;
		1431	$self->prepare_orig;
		1432	}
		1433
		1434	$self->default_region (cf::region::find_by_path $self->{path})
		1435	unless $self->default_region;
		1436
		1437	1
		1438	}
		1439
		1440	sub find;
		1441	sub find {
		1442	my ($path, $origin) = @_;
		1443
		1444	$path = normalise $path, $origin && $origin->path;
		1445
		1446	cf::lock_wait "map_find:$path";
		1447
		1448	$cf::MAP{$path} || do {
		1449	my $guard = cf::lock_acquire "map_find:$path";
		1450	my $map = new_from_path cf::map $path
		1451	or return;
		1452
		1453	$map->{last_save} = $cf::RUNTIME;
		1454
		1455	$map->load_header
		1456	or return;
		1457
		1458	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1459	# doing this can freeze the server in a sync job, obviously
		1460	#$cf::WAIT_FOR_TICK->wait;
		1461	$map->reset;
		1462	undef $guard;
		1463	return find $path;
		1464	}
		1465
		1466	$cf::MAP{$path} = $map
		1467	}
		1468	}
		1469
		1470	sub pre_load { }
		1471	sub post_load { }
		1472
		1473	sub load {
		1474	my ($self) = @_;
		1475
		1476	local $self->{deny_reset} = 1; # loading can take a long time
		1477
		1478	my $path = $self->{path};
		1479	my $guard = cf::lock_acquire "map_load:$path";
		1480
		1481	return if $self->in_memory != cf::MAP_SWAPPED;
		1482
		1483	$self->in_memory (cf::MAP_LOADING);
		1484
		1485	$self->alloc;
		1486
		1487	$self->pre_load;
		1488	Coro::cede;
		1489
		1490	$self->_load_objects ($self->{load_path}, 1)
		1491	or return;
		1492
		1493	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1494	if delete $self->{load_original};
		1495
		1496	if (my $uniq = $self->uniq_path) {
		1497	utf8::encode $uniq;
		1498	if (aio_open $uniq, O_RDONLY, 0) {
		1499	$self->clear_unique_items;
		1500	$self->_load_objects ($uniq, 0);
		1501	}
		1502	}
		1503
		1504	Coro::cede;
		1505	# now do the right thing for maps
		1506	$self->link_multipart_objects;
		1507	Coro::cede;
		1508
		1509	unless ($self->{deny_activate}) {
		1510	$self->decay_objects;
		1511	$self->fix_auto_apply;
		1512	$self->update_buttons;
		1513	Coro::cede;
		1514	$self->set_darkness_map;
		1515	$self->difficulty ($self->estimate_difficulty)
		1516	unless $self->difficulty;
		1517	Coro::cede;
		1518	$self->activate;
		1519	Coro::cede;
		1520	}
		1521
		1522	$self->post_load;
		1523	Coro::cede;
		1524
		1525	$self->in_memory (cf::MAP_IN_MEMORY);
		1526	}
		1527
		1528	sub customise_for {
		1529	my ($self, $ob) = @_;
		1530
		1531	return find "~" . $ob->name . "/" . $self->{path}
		1532	if $self->per_player;
		1533
		1534	$self
		1535	}
		1536
		1537	# find and load all maps in the 3x3 area around a map
		1538	sub load_diag {
721	my ($map) = @_;	1539	my ($map) = @_;
722		1540
723	my $path = $map->tmpname;	1541	my @diag; # diagonal neighbours
724	defined $path or return;
725		1542
726	unlink "$path.pst";	1543	for (0 .. 3) {
727	};	1544	my $neigh = $map->tile_path ($_)
		1545	or next;
		1546	$neigh = find $neigh, $map
		1547	or next;
		1548	$neigh->load;
728		1549
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1550	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1551	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1552	}
730		1553
731	#############################################################################	1554	for (@diag) {
732	# load/save perl data associated with player->ob objects	1555	my $neigh = find @$_
733		1556	or next;
734	sub all_objects(@) {	1557	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1558	}
736	}	1559	}
737		1560
738	# TODO: compatibility cruft, remove when no longer needed	1561	sub find_sync {
739	cf::player->attach (	1562	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1563
743	for my $o (all_objects $pl->ob) {	1564	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1565	}
745	$o->set_ob_key_value ("_perl_data");
746		1566
747	%$o = %{ Storable::thaw pack "H*", $value };	1567	sub do_load_sync {
		1568	my ($map) = @_;
		1569
		1570	cf::sync_job { $map->load };
		1571	}
		1572
		1573	our %MAP_PREFETCH;
		1574	our $MAP_PREFETCHER = undef;
		1575
		1576	sub find_async {
		1577	my ($path, $origin) = @_;
		1578
		1579	$path = normalise $path, $origin && $origin->{path};
		1580
		1581	if (my $map = $cf::MAP{$path}) {
		1582	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1583	}
		1584
		1585	undef $MAP_PREFETCH{$path};
		1586	$MAP_PREFETCHER ||= cf::async {
		1587	while (%MAP_PREFETCH) {
		1588	for my $path (keys %MAP_PREFETCH) {
		1589	my $map = find $path
		1590	or next;
		1591	$map->load;
		1592
		1593	delete $MAP_PREFETCH{$path};
748	}	1594	}
749	}	1595	}
		1596	undef $MAP_PREFETCHER;
		1597	};
		1598	$MAP_PREFETCHER->prio (6);
		1599
		1600	()
		1601	}
		1602
		1603	sub save {
		1604	my ($self) = @_;
		1605
		1606	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1607
		1608	$self->{last_save} = $cf::RUNTIME;
		1609
		1610	return unless $self->dirty;
		1611
		1612	my $save = $self->save_path; utf8::encode $save;
		1613	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1614
		1615	$self->{load_path} = $save;
		1616
		1617	return if $self->{deny_save};
		1618
		1619	local $self->{last_access} = $self->last_access;#d#
		1620
		1621	cf::async {
		1622	$_->contr->save for $self->players;
		1623	};
		1624
		1625	if ($uniq) {
		1626	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1627	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1628	} else {
		1629	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
750	},	1630	}
751	);	1631	}
752		1632
753	#############################################################################	1633	sub swap_out {
		1634	my ($self) = @_;
754		1635
755	=head2 CORE EXTENSIONS	1636	# save first because save cedes
		1637	$self->save;
756		1638
757	Functions and methods that extend core crossfire objects.	1639	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1640
759	=head3 cf::player	1641	return if $self->players;
		1642	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1643	return if $self->{deny_save};
		1644
		1645	$self->clear;
		1646	$self->in_memory (cf::MAP_SWAPPED);
		1647	}
		1648
		1649	sub reset_at {
		1650	my ($self) = @_;
		1651
		1652	# TODO: safety, remove and allow resettable per-player maps
		1653	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1654	return 1e99 if $self->{deny_reset};
		1655
		1656	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1657	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1658
		1659	$time + $to
		1660	}
		1661
		1662	sub should_reset {
		1663	my ($self) = @_;
		1664
		1665	$self->reset_at <= $cf::RUNTIME
		1666	}
		1667
		1668	sub reset {
		1669	my ($self) = @_;
		1670
		1671	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1672
		1673	return if $self->players;
		1674	return if $self->isa ("ext::map_per_player");#d#
		1675
		1676	warn "resetting map ", $self->path;#d#
		1677
		1678	$self->in_memory (cf::MAP_SWAPPED);
		1679
		1680	# need to save uniques path
		1681	unless ($self->{deny_save}) {
		1682	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1683
		1684	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1685	if $uniq;
		1686	}
		1687
		1688	delete $cf::MAP{$self->path};
		1689
		1690	$self->clear;
		1691
		1692	$_->clear_links_to ($self) for values %cf::MAP;
		1693
		1694	$self->unlink_save;
		1695	$self->destroy;
		1696	}
		1697
		1698	my $nuke_counter = "aaaa";
		1699
		1700	sub nuke {
		1701	my ($self) = @_;
		1702
		1703	delete $cf::MAP{$self->path};
		1704
		1705	$self->unlink_save;
		1706
		1707	bless $self, "cf::map";
		1708	delete $self->{deny_reset};
		1709	$self->{deny_save} = 1;
		1710	$self->reset_timeout (1);
		1711	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1712
		1713	$cf::MAP{$self->path} = $self;
		1714
		1715	$self->reset; # polite request, might not happen
		1716	}
		1717
		1718	=item cf::map::unique_maps
		1719
		1720	Returns an arrayref of paths of all shared maps that have
		1721	instantiated unique items. May block.
		1722
		1723	=cut
		1724
		1725	sub unique_maps() {
		1726	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1727	or return;
		1728
		1729	my @paths;
		1730
		1731	for (@$files) {
		1732	utf8::decode $_;
		1733	next if /\.pst$/;
		1734	next unless /^$PATH_SEP/o;
		1735
		1736	push @paths, cf::map::normalise $_;
		1737	}
		1738
		1739	\@paths
		1740	}
		1741
		1742	package cf;
		1743
		1744	=back
		1745
		1746	=head3 cf::object
		1747
		1748	=cut
		1749
		1750	package cf::object;
760		1751
761	=over 4	1752	=over 4
762		1753
763	=item cf::player::exists $login	1754	=item $ob->inv_recursive
764		1755
765	Returns true when the given account exists.	1756	Returns the inventory of the object _and_ their inventories, recursively.
766		1757
767	=cut	1758	=cut
768		1759
769	sub cf::player::exists($) {	1760	sub inv_recursive_;
770	cf::player::find $_[0]	1761	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1762	map { $_, inv_recursive_ $_->inv } @_
772	}	1763	}
773		1764
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1765	sub inv_recursive {
775		1766	inv_recursive_ inv $_[0]
776	Sends an ext reply to the player.
777
778	=cut
779
780	sub cf::player::ext_reply($$$%) {
781	my ($self, $id, %msg) = @_;
782
783	$msg{msgid} = $id;
784
785	$self->send ("ext " . to_json \%msg);
786	}	1767	}
		1768
		1769	package cf;
787		1770
788	=back	1771	=back
789		1772
790	=head3 cf::object::player	1773	=head3 cf::object::player
791		1774
…		…
829	(ref $cf::CFG{"may_$access"}	1812	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1813	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	1814	: $cf::CFG{"may_$access"})
832	}	1815	}
833		1816
		1817	=item $player_object->enter_link
		1818
		1819	Freezes the player and moves him/her to a special map (C<{link}>).
		1820
		1821	The player should be reasonably safe there for short amounts of time. You
		1822	I<MUST> call C<leave_link> as soon as possible, though.
		1823
		1824	Will never block.
		1825
		1826	=item $player_object->leave_link ($map, $x, $y)
		1827
		1828	Moves the player out of the special C<{link}> map onto the specified
		1829	map. If the map is not valid (or omitted), the player will be moved back
		1830	to the location he/she was before the call to C<enter_link>, or, if that
		1831	fails, to the emergency map position.
		1832
		1833	Might block.
		1834
		1835	=cut
		1836
		1837	sub link_map {
		1838	unless ($LINK_MAP) {
		1839	$LINK_MAP = cf::map::find "{link}"
		1840	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1841	$LINK_MAP->load;
		1842	}
		1843
		1844	$LINK_MAP
		1845	}
		1846
		1847	sub cf::object::player::enter_link {
		1848	my ($self) = @_;
		1849
		1850	$self->deactivate_recursive;
		1851
		1852	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1853
		1854	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1855	if $self->map;
		1856
		1857	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1858	}
		1859
		1860	sub cf::object::player::leave_link {
		1861	my ($self, $map, $x, $y) = @_;
		1862
		1863	my $link_pos = delete $self->{_link_pos};
		1864
		1865	unless ($map) {
		1866	# restore original map position
		1867	($map, $x, $y) = @{ $link_pos || [] };
		1868	$map = cf::map::find $map;
		1869
		1870	unless ($map) {
		1871	($map, $x, $y) = @$EMERGENCY_POSITION;
		1872	$map = cf::map::find $map
		1873	or die "FATAL: cannot load emergency map\n";
		1874	}
		1875	}
		1876
		1877	($x, $y) = (-1, -1)
		1878	unless (defined $x) && (defined $y);
		1879
		1880	# use -1 or undef as default coordinates, not 0, 0
		1881	($x, $y) = ($map->enter_x, $map->enter_y)
		1882	if $x <=0 && $y <= 0;
		1883
		1884	$map->load;
		1885	$map->load_diag;
		1886
		1887	return unless $self->contr->active;
		1888	$self->activate_recursive;
		1889
		1890	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1891	$self->enter_map ($map, $x, $y);
		1892	}
		1893
		1894	cf::player->attach (
		1895	on_logout => sub {
		1896	my ($pl) = @_;
		1897
		1898	# abort map switching before logout
		1899	if ($pl->ob->{_link_pos}) {
		1900	cf::sync_job {
		1901	$pl->ob->leave_link
		1902	};
		1903	}
		1904	},
		1905	on_login => sub {
		1906	my ($pl) = @_;
		1907
		1908	# try to abort aborted map switching on player login :)
		1909	# should happen only on crashes
		1910	if ($pl->ob->{_link_pos}) {
		1911	$pl->ob->enter_link;
		1912	(async {
		1913	$pl->ob->reply (undef,
		1914	"There was an internal problem at your last logout, "
		1915	. "the server will try to bring you to your intended destination in a second.",
		1916	cf::NDI_RED);
		1917	# we need this sleep as the login has a concurrent enter_exit running
		1918	# and this sleep increases chances of the player not ending up in scorn
		1919	Coro::Timer::sleep 1;
		1920	$pl->ob->leave_link;
		1921	})->prio (2);
		1922	}
		1923	},
		1924	);
		1925
		1926	=item $player_object->goto ($path, $x, $y)
		1927
		1928	=cut
		1929
		1930	sub cf::object::player::goto {
		1931	my ($self, $path, $x, $y) = @_;
		1932
		1933	$self->enter_link;
		1934
		1935	(async {
		1936	my $map = eval {
		1937	my $map = cf::map::find $path;
		1938	$map = $map->customise_for ($self) if $map;
		1939	$map
		1940	} or
		1941	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1942
		1943	$self->leave_link ($map, $x, $y);
		1944	})->prio (1);
		1945	}
		1946
		1947	=item $player_object->enter_exit ($exit_object)
		1948
		1949	=cut
		1950
		1951	sub parse_random_map_params {
		1952	my ($spec) = @_;
		1953
		1954	my $rmp = { # defaults
		1955	xsize => (cf::rndm 15, 40),
		1956	ysize => (cf::rndm 15, 40),
		1957	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1958	#layout => string,
		1959	};
		1960
		1961	for (split /\n/, $spec) {
		1962	my ($k, $v) = split /\s+/, $_, 2;
		1963
		1964	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1965	}
		1966
		1967	$rmp
		1968	}
		1969
		1970	sub prepare_random_map {
		1971	my ($exit) = @_;
		1972
		1973	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1974
		1975	# all this does is basically replace the /! path by
		1976	# a new random map path (?random/...) with a seed
		1977	# that depends on the exit object
		1978
		1979	my $rmp = parse_random_map_params $exit->msg;
		1980
		1981	if ($exit->map) {
		1982	$rmp->{region} = $exit->region->name;
		1983	$rmp->{origin_map} = $exit->map->path;
		1984	$rmp->{origin_x} = $exit->x;
		1985	$rmp->{origin_y} = $exit->y;
		1986	}
		1987
		1988	$rmp->{random_seed} ||= $exit->random_seed;
		1989
		1990	my $data = cf::to_json $rmp;
		1991	my $md5 = Digest::MD5::md5_hex $data;
		1992	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1993
		1994	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1995	aio_write $fh, 0, (length $data), $data, 0;
		1996	undef $fh;
		1997	aio_rename "$meta~", $meta;
		1998
		1999	$exit->slaying ("?random/$md5");
		2000	$exit->msg (undef);
		2001	}
		2002	}
		2003
		2004	sub cf::object::player::enter_exit {
		2005	my ($self, $exit) = @_;
		2006
		2007	return unless $self->type == cf::PLAYER;
		2008
		2009	if ($exit->slaying eq "/!") {
		2010	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2011	# the problem is that $exit might not survive long enough
		2012	# so it needs to be done right now, right here
		2013	cf::sync_job { prepare_random_map $exit };
		2014	}
		2015
		2016	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2017	my $hp = $exit->stats->hp;
		2018	my $sp = $exit->stats->sp;
		2019
		2020	$self->enter_link;
		2021
		2022	(async {
		2023	$self->deactivate_recursive; # just to be sure
		2024	unless (eval {
		2025	$self->goto ($slaying, $hp, $sp);
		2026
		2027	1;
		2028	}) {
		2029	$self->message ("Something went wrong deep within the crossfire server. "
		2030	. "I'll try to bring you back to the map you were before. "
		2031	. "Please report this to the dungeon master!",
		2032	cf::NDI_UNIQUE | cf::NDI_RED);
		2033
		2034	warn "ERROR in enter_exit: $@";
		2035	$self->leave_link;
		2036	}
		2037	})->prio (1);
		2038	}
		2039
834	=head3 cf::client	2040	=head3 cf::client
835		2041
836	=over 4	2042	=over 4
837		2043
838	=item $client->send_drawinfo ($text, $flags)	2044	=item $client->send_drawinfo ($text, $flags)
…		…
844		2050
845	sub cf::client::send_drawinfo {	2051	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	2052	my ($self, $text, $flags) = @_;
847		2053
848	utf8::encode $text;	2054	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2055	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	2056	}
851		2057
		2058	=item $client->ext_event ($type, %msg)
		2059
		2060	Sends an exti event to the client.
		2061
		2062	=cut
		2063
		2064	sub cf::client::ext_event($$%) {
		2065	my ($self, $type, %msg) = @_;
		2066
		2067	$msg{msgtype} = "event_$type";
		2068	$self->send_packet ("ext " . cf::to_json \%msg);
		2069	}
852		2070
853	=item $success = $client->query ($flags, "text", \&cb)	2071	=item $success = $client->query ($flags, "text", \&cb)
854		2072
855	Queues a query to the client, calling the given callback with	2073	Queues a query to the client, calling the given callback with
856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2074	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
881	on_reply => sub {	2099	on_reply => sub {
882	my ($ns, $msg) = @_;	2100	my ($ns, $msg) = @_;
883		2101
884	# this weird shuffling is so that direct followup queries	2102	# this weird shuffling is so that direct followup queries
885	# get handled first	2103	# get handled first
886	my $queue = delete $ns->{query_queue};	2104	my $queue = delete $ns->{query_queue}
		2105	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		2106
888	(shift @$queue)->[1]->($msg);	2107	(shift @$queue)->[1]->($msg);
		2108	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		2109
890	push @{ $ns->{query_queue} }, @$queue;	2110	push @{ $ns->{query_queue} }, @$queue;
891		2111
892	if (@{ $ns->{query_queue} } == @$queue) {	2112	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	2113	if (@$queue) {
…		…
897	}	2117	}
898	}	2118	}
899	},	2119	},
900	);	2120	);
901		2121
902	=item $client->coro (\&cb)	2122	=item $client->async (\&cb)
903		2123
904	Create a new coroutine, running the specified callback. The coroutine will	2124	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	2125	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	2126	or loss of connection).
907		2127
908	=cut	2128	=cut
909		2129
910	sub cf::client::coro {	2130	sub cf::client::async {
911	my ($self, $cb) = @_;	2131	my ($self, $cb) = @_;
912		2132
913	my $coro; $coro = async {	2133	my $coro = &Coro::async ($cb);
914	eval {	2134
915	$cb->();	2135	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	2136	delete $self->{_coro}{$coro+0};
919	};	2137	});
920		2138
921	$self->{_coro}{$coro+0} = $coro;	2139	$self->{_coro}{$coro+0} = $coro;
		2140
		2141	$coro
922	}	2142	}
923		2143
924	cf::client->attach (	2144	cf::client->attach (
925	on_destroy => sub {	2145	on_destroy => sub {
926	my ($ns) = @_;	2146	my ($ns) = @_;
…		…
951		2171
952	# here we export the classes and methods available to script code	2172	# here we export the classes and methods available to script code
953		2173
954	=pod	2174	=pod
955		2175
956	The following fucntions and emthods are available within a safe environment:	2176	The following functions and methods are available within a safe environment:
957		2177
958	cf::object contr pay_amount pay_player map	2178	cf::object contr pay_amount pay_player map
959	cf::object::player player	2179	cf::object::player player
960	cf::player peaceful	2180	cf::player peaceful
961	cf::map trigger	2181	cf::map trigger
…		…
1046	#############################################################################	2266	#############################################################################
1047		2267
1048	=head2 EXTENSION DATABASE SUPPORT	2268	=head2 EXTENSION DATABASE SUPPORT
1049		2269
1050	Crossfire maintains a very simple database for extension use. It can	2270	Crossfire maintains a very simple database for extension use. It can
1051	currently store anything that can be serialised using Storable, which	2271	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1052	excludes objects.	2272	convert to/from binary).
1053		2273
1054	The parameter C<$family> should best start with the name of the extension	2274	The parameter C<$family> should best start with the name of the extension
1055	using it, it should be unique.	2275	using it, it should be unique.
1056		2276
1057	=over 4	2277	=over 4
1058		2278
1059	=item $hashref = cf::db_get $family
1060
1061	Return a hashref for use by the extension C<$family>, which can be
1062	modified. After modifications, you have to call C<cf::db_dirty> or
1063	C<cf::db_sync>.
1064
1065	=item $value = cf::db_get $family => $key	2279	=item $value = cf::db_get $family => $key
1066		2280
1067	Returns a single value from the database	2281	Returns a single value from the database.
1068
1069	=item cf::db_put $family => $hashref
1070
1071	Stores the given family hashref into the database. Updates are delayed, if
1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1073		2282
1074	=item cf::db_put $family => $key => $value	2283	=item cf::db_put $family => $key => $value
1075		2284
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you	2285	Stores the given C<$value> in the family.
1077	want the data to be synced to disk immediately, use C<cf::db_sync>.
1078
1079	=item cf::db_dirty
1080
1081	Marks the database as dirty, to be updated at a later time.
1082
1083	=item cf::db_sync
1084
1085	Immediately write the database to disk I<if it is dirty>.
1086		2286
1087	=cut	2287	=cut
1088		2288
1089	our $DB;	2289	our $DB;
1090		2290
1091	{	2291	sub db_init {
1092	my $path = cf::localdir . "/database.pst";	2292	unless ($DB) {
		2293	$DB = BDB::db_create $DB_ENV;
1093		2294
1094	sub db_load() {	2295	cf::sync_job {
1095	warn "loading database $path\n";#d# remove later	2296	eval {
1096	$DB = stat $path ? Storable::retrieve $path : { };	2297	$DB->set_flags (BDB::CHKSUM);
1097	}
1098		2298
1099	my $pid;	2299	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1100		2300	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1101	sub db_save() {	2301	cf::cleanup "db_open(db): $!" if $!;
1102	warn "saving database $path\n";#d# remove later	2302	};
1103	waitpid $pid, 0 if $pid;	2303	cf::cleanup "db_open(db): $@" if $@;
1104	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}	2304	};
1110	}
1111
1112	my $dirty;
1113
1114	sub db_sync() {
1115	db_save if $dirty;
1116	undef $dirty;
1117	}
1118
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;
1121	});	2305	}
		2306	}
1122		2307
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {	2308	sub db_get($$) {
1129	@_ >= 2	2309	my $key = "$_[0]/$_[1]";
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133		2310
		2311	cf::sync_job {
		2312	BDB::db_get $DB, undef, $key, my $data;
		2313
		2314	$! ? ()
		2315	: $data
		2316	}
		2317	}
		2318
1134	sub db_put($$;$) {	2319	sub db_put($$$) {
1135	if (@_ >= 3) {	2320	BDB::dbreq_pri 4;
1136	$DB->{$_[0]}{$_[1]} = $_[2];	2321	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1137	} else {	2322	}
1138	$DB->{$_[0]} = $_[1];
1139	}
1140	db_dirty;
1141	}
1142		2323
1143	cf::global->attach (	2324	=item cf::cache $id => [$paths...], $processversion => $process
1144	prio => 10000,	2325
1145	on_cleanup => sub {	2326	Generic caching function that returns the value of the resource $id,
1146	db_sync;	2327	caching and regenerating as required.
		2328
		2329	This function can block.
		2330
		2331	=cut
		2332
		2333	sub cache {
		2334	my ($id, $src, $processversion, $process) = @_;
		2335
		2336	my $meta =
		2337	join "\x00",
		2338	$processversion,
		2339	map {
		2340	aio_stat $_
		2341	and Carp::croak "$_: $!";
		2342
		2343	($_, (stat _)[7,9])
		2344	} @$src;
		2345
		2346	my $dbmeta = db_get cache => "$id/meta";
		2347	if ($dbmeta ne $meta) {
		2348	# changed, we may need to process
		2349
		2350	my @data;
		2351	my $md5;
		2352
		2353	for (0 .. $#$src) {
		2354	0 <= aio_load $src->[$_], $data[$_]
		2355	or Carp::croak "$src->[$_]: $!";
1147	},	2356	}
1148	);	2357
		2358	# if processing is expensive, check
		2359	# checksum first
		2360	if (1) {
		2361	$md5 =
		2362	join "\x00",
		2363	$processversion,
		2364	map {
		2365	Coro::cede;
		2366	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2367	} 0.. $#$src;
		2368
		2369
		2370	my $dbmd5 = db_get cache => "$id/md5";
		2371	if ($dbmd5 eq $md5) {
		2372	db_put cache => "$id/meta", $meta;
		2373
		2374	return db_get cache => "$id/data";
		2375	}
		2376	}
		2377
		2378	my $data = $process->(\@data);
		2379
		2380	db_put cache => "$id/data", $data;
		2381	db_put cache => "$id/md5" , $md5;
		2382	db_put cache => "$id/meta", $meta;
		2383
		2384	return $data;
		2385	}
		2386
		2387	db_get cache => "$id/data"
1149	}	2388	}
		2389
		2390	=item fork_call { }, $args
		2391
		2392	Executes the given code block with the given arguments in a seperate
		2393	process, returning the results. Everything must be serialisable with
		2394	Coro::Storable. May, of course, block. Note that the executed sub may
		2395	never block itself or use any form of Event handling.
		2396
		2397	=cut
		2398
		2399	sub fork_call(&@) {
		2400	my ($cb, @args) = @_;
		2401
		2402	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2403	# or die "socketpair: $!";
		2404	pipe my $fh1, my $fh2
		2405	or die "pipe: $!";
		2406
		2407	if (my $pid = fork) {
		2408	close $fh2;
		2409
		2410	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2411	$res = Coro::Storable::thaw $res;
		2412
		2413	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2414
		2415	die $$res unless "ARRAY" eq ref $res;
		2416
		2417	return wantarray ? @$res : $res->[-1];
		2418	} else {
		2419	eval {
		2420	local $SIG{__DIE__};
		2421	local $SIG{__WARN__};
		2422	close $fh1;
		2423
		2424	my @res = eval { $cb->(@args) };
		2425	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2426	};
		2427
		2428	_exit 0;
		2429	}
		2430	}
		2431
		2432
1150		2433
1151	#############################################################################	2434	#############################################################################
1152	# the server's main()	2435	# the server's init and main functions
		2436
		2437	sub load_facedata($) {
		2438	my ($path) = @_;
		2439
		2440	warn "loading facedata from $path\n";
		2441
		2442	my $facedata;
		2443	0 < aio_load $path, $facedata
		2444	or die "$path: $!";
		2445
		2446	$facedata = Coro::Storable::thaw $facedata;
		2447
		2448	$facedata->{version} == 2
		2449	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2450
		2451	{
		2452	my $faces = $facedata->{faceinfo};
		2453
		2454	while (my ($face, $info) = each %$faces) {
		2455	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2456	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2457	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2458	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2459	Coro::cede;
		2460	}
		2461
		2462	while (my ($face, $info) = each %$faces) {
		2463	next unless $info->{smooth};
		2464	my $idx = cf::face::find $face
		2465	or next;
		2466	if (my $smooth = cf::face::find $info->{smooth}) {
		2467	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2468	} else {
		2469	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2470	}
		2471	Coro::cede;
		2472	}
		2473	}
		2474
		2475	{
		2476	my $anims = $facedata->{animinfo};
		2477
		2478	while (my ($anim, $info) = each %$anims) {
		2479	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2480	Coro::cede;
		2481	}
		2482
		2483	cf::anim::invalidate_all; # d'oh
		2484	}
		2485
		2486	1
		2487	}
		2488
		2489	sub reload_facedata {
		2490	load_facedata sprintf "%s/facedata", cf::datadir
		2491	or die "unable to load facedata\n";
		2492	}
		2493
		2494	sub reload_regions {
		2495	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2496	or die "unable to load regions file\n";
		2497	}
		2498
		2499	sub reload_archetypes {
		2500	load_resource_file sprintf "%s/archetypes", cf::datadir
		2501	or die "unable to load archetypes\n";
		2502	}
		2503
		2504	sub reload_treasures {
		2505	load_resource_file sprintf "%s/treasures", cf::datadir
		2506	or die "unable to load treasurelists\n";
		2507	}
		2508
		2509	sub reload_resources {
		2510	warn "reloading resource files...\n";
		2511
		2512	reload_regions;
		2513	reload_facedata;
		2514	reload_archetypes;
		2515	reload_treasures;
		2516
		2517	warn "finished reloading resource files\n";
		2518	}
		2519
		2520	sub init {
		2521	reload_resources;
		2522	}
1153		2523
1154	sub cfg_load {	2524	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2525	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;	2526	or return;
1157		2527
1158	local $/;	2528	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2529	*CFG = YAML::Syck::Load <$fh>;
		2530
		2531	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2532
		2533	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2534	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2535
		2536	if (exists $CFG{mlockall}) {
		2537	eval {
		2538	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2539	and die "WARNING: m(un)lockall failed: $!\n";
		2540	};
		2541	warn $@ if $@;
		2542	}
1160	}	2543	}
1161		2544
1162	sub main {	2545	sub main {
		2546	# we must not ever block the main coroutine
		2547	local $Coro::idle = sub {
		2548	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2549	(async {
		2550	Event::one_event;
		2551	})->prio (Coro::PRIO_MAX);
		2552	};
		2553
1163	cfg_load;	2554	cfg_load;
1164	db_load;	2555	db_init;
1165	load_extensions;	2556	load_extensions;
		2557
		2558	$TICK_WATCHER->start;
1166	Event::loop;	2559	Event::loop;
1167	}	2560	}
1168		2561
1169	#############################################################################	2562	#############################################################################
1170	# initialisation	2563	# initialisation and cleanup
1171		2564
1172	sub _perl_reload(&) {	2565	# install some emergency cleanup handlers
		2566	BEGIN {
		2567	for my $signal (qw(INT HUP TERM)) {
		2568	Event->signal (
		2569	reentrant => 0,
		2570	data => WF_AUTOCANCEL,
		2571	signal => $signal,
		2572	prio => 0,
		2573	cb => sub {
		2574	cf::cleanup "SIG$signal";
		2575	},
		2576	);
		2577	}
		2578	}
		2579
		2580	sub emergency_save() {
		2581	my $freeze_guard = cf::freeze_mainloop;
		2582
		2583	warn "enter emergency perl save\n";
		2584
		2585	cf::sync_job {
		2586	# use a peculiar iteration method to avoid tripping on perl
		2587	# refcount bugs in for. also avoids problems with players
		2588	# and maps saved/destroyed asynchronously.
		2589	warn "begin emergency player save\n";
		2590	for my $login (keys %cf::PLAYER) {
		2591	my $pl = $cf::PLAYER{$login} or next;
		2592	$pl->valid or next;
		2593	$pl->save;
		2594	}
		2595	warn "end emergency player save\n";
		2596
		2597	warn "begin emergency map save\n";
		2598	for my $path (keys %cf::MAP) {
		2599	my $map = $cf::MAP{$path} or next;
		2600	$map->valid or next;
		2601	$map->save;
		2602	}
		2603	warn "end emergency map save\n";
		2604
		2605	warn "begin emergency database checkpoint\n";
		2606	BDB::db_env_txn_checkpoint $DB_ENV;
		2607	warn "end emergency database checkpoint\n";
		2608	};
		2609
		2610	warn "leave emergency perl save\n";
		2611	}
		2612
		2613	sub post_cleanup {
1173	my ($msg) = @_;	2614	my ($make_core) = @_;
1174		2615
1175	$msg->("reloading...");	2616	warn Carp::longmess "post_cleanup backtrace"
		2617	if $make_core;
		2618	}
1176		2619
1177	eval {	2620	sub do_reload_perl() {
1178	# cancel all watchers	2621	# can/must only be called in main
		2622	if ($Coro::current != $Coro::main) {
		2623	warn "can only reload from main coroutine";
		2624	return;
		2625	}
		2626
		2627	warn "reloading...";
		2628
		2629	warn "entering sync_job";
		2630
		2631	cf::sync_job {
		2632	cf::write_runtime; # external watchdog should not bark
		2633	cf::emergency_save;
		2634	cf::write_runtime; # external watchdog should not bark
		2635
		2636	warn "syncing database to disk";
		2637	BDB::db_env_txn_checkpoint $DB_ENV;
		2638
		2639	# if anything goes wrong in here, we should simply crash as we already saved
		2640
		2641	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2642	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2643	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2644	}
1182		2645
1183	# unload all extensions	2646	warn "flushing outstanding aio requests";
1184	for (@exts) {	2647	for (;;) {
1185	$msg->("unloading <$_>");	2648	BDB::flush;
1186	unload_extension $_;	2649	IO::AIO::flush;
		2650	Coro::cede;
		2651	last unless IO::AIO::nreqs || BDB::nreqs;
		2652	warn "iterate...";
		2653	}
		2654
		2655	++$RELOAD;
		2656
		2657	warn "cancelling all extension coros";
		2658	$_->cancel for values %EXT_CORO;
		2659	%EXT_CORO = ();
		2660
		2661	warn "removing commands";
		2662	%COMMAND = ();
		2663
		2664	warn "removing ext commands";
		2665	%EXTCMD = ();
		2666
		2667	warn "unloading/nuking all extensions";
		2668	for my $pkg (@EXTS) {
		2669	warn "... unloading $pkg";
		2670
		2671	if (my $cb = $pkg->can ("unload")) {
		2672	eval {
		2673	$cb->($pkg);
		2674	1
		2675	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2676	}
1188		2677
		2678	warn "... nuking $pkg";
		2679	Symbol::delete_package $pkg;
		2680	}
		2681
1189	# unload all modules loaded from $LIBDIR	2682	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2683	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2684	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2685
1193	$msg->("removing <$k>");	2686	warn "... unloading $k";
1194	delete $INC{$k};	2687	delete $INC{$k};
1195		2688
1196	$k =~ s/\.pm$//;	2689	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2690	$k =~ s/\//::/g;
1198		2691
…		…
1201	}	2694	}
1202		2695
1203	Symbol::delete_package $k;	2696	Symbol::delete_package $k;
1204	}	2697	}
1205		2698
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2699	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2700	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2701	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2702
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2703	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2704	delete $INC{"cf.pm"};
1218		2705
1219	# don't, removes xs symbols, too,	2706	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2707	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2708	#Symbol::delete_package __PACKAGE__;
1222		2709
1223	# reload cf.pm	2710	warn "unload completed, starting to reload now";
		2711
1224	$msg->("reloading cf.pm");	2712	warn "reloading cf.pm";
1225	require cf;	2713	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2714	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2715
1228
1229	# load config and database again	2716	warn "loading config and database again";
1230	cf::cfg_load;	2717	cf::cfg_load;
1231	cf::db_load;
1232		2718
1233	# load extensions	2719	warn "loading extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2720	cf::load_extensions;
1236		2721
1237	# reattach attachments to objects	2722	warn "reattaching attachments to objects/players";
1238	$msg->("reattach");	2723	_global_reattach; # objects, sockets
1239	_global_reattach;	2724	warn "reattaching attachments to maps";
		2725	reattach $_ for values %MAP;
		2726	warn "reattaching attachments to players";
		2727	reattach $_ for values %PLAYER;
		2728
		2729	warn "leaving sync_job";
		2730
		2731	1
		2732	} or do {
		2733	warn $@;
		2734	warn "error while reloading, exiting.";
		2735	exit 1;
1240	};	2736	};
1241	$msg->($@) if $@;
1242		2737
1243	$msg->("reloaded");	2738	warn "reloaded";
1244	};	2739	};
1245		2740
1246	sub perl_reload() {	2741	our $RELOAD_WATCHER; # used only during reload
1247	_perl_reload {	2742
1248	warn $_[0];	2743	sub reload_perl() {
1249	print "$_[0]\n";	2744	# doing reload synchronously and two reloads happen back-to-back,
		2745	# coro crashes during coro_state_free->destroy here.
		2746
		2747	$RELOAD_WATCHER ||= Event->timer (
		2748	reentrant => 0,
		2749	after => 0,
		2750	data => WF_AUTOCANCEL,
		2751	cb => sub {
		2752	do_reload_perl;
		2753	undef $RELOAD_WATCHER;
		2754	},
1250	};	2755	);
1251	}	2756	}
1252		2757
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	2758	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	2759	my ($who, $arg) = @_;
1257		2760
1258	if ($who->flag (FLAG_WIZ)) {	2761	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	2762	$who->message ("reloading server.");
1260	warn $_[0];	2763	async { reload_perl };
1261	$who->message ($_[0]);
1262	};
1263	}	2764	}
1264	};	2765	};
1265		2766
1266	unshift @INC, $LIBDIR;	2767	unshift @INC, $LIBDIR;
1267		2768
		2769	my $bug_warning = 0;
		2770
		2771	our @WAIT_FOR_TICK;
		2772	our @WAIT_FOR_TICK_BEGIN;
		2773
		2774	sub wait_for_tick {
		2775	return unless $TICK_WATCHER->is_active;
		2776	return if $Coro::current == $Coro::main;
		2777
		2778	my $signal = new Coro::Signal;
		2779	push @WAIT_FOR_TICK, $signal;
		2780	$signal->wait;
		2781	}
		2782
		2783	sub wait_for_tick_begin {
		2784	return unless $TICK_WATCHER->is_active;
		2785	return if $Coro::current == $Coro::main;
		2786
		2787	my $signal = new Coro::Signal;
		2788	push @WAIT_FOR_TICK_BEGIN, $signal;
		2789	$signal->wait;
		2790	}
		2791
1268	$TICK_WATCHER = Event->timer (	2792	$TICK_WATCHER = Event->timer (
		2793	reentrant => 0,
		2794	parked => 1,
1269	prio => 0,	2795	prio => 0,
1270	at => $NEXT_TICK || 1,	2796	at => $NEXT_TICK || $TICK,
1271	data => WF_AUTOCANCEL,	2797	data => WF_AUTOCANCEL,
1272	cb => sub {	2798	cb => sub {
		2799	if ($Coro::current != $Coro::main) {
		2800	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2801	unless ++$bug_warning > 10;
		2802	return;
		2803	}
		2804
		2805	$NOW = Event::time;
		2806
1273	cf::server_tick; # one server iteration	2807	cf::server_tick; # one server iteration
1274		2808
1275	my $NOW = Event::time;	2809	$RUNTIME += $TICK;
1276	$NEXT_TICK += $TICK;	2810	$NEXT_TICK += $TICK;
1277		2811
		2812	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2813	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2814	Coro::async_pool {
		2815	write_runtime
		2816	or warn "ERROR: unable to write runtime file: $!";
		2817	};
		2818	}
		2819
		2820	# my $AFTER = Event::time;
		2821	# warn $AFTER - $NOW;#d#
		2822
1278	# if we are delayed by four ticks or more, skip them all	2823	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2824	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1280		2825
1281	$TICK_WATCHER->at ($NEXT_TICK);	2826	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	2827	$TICK_WATCHER->start;
		2828
		2829	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2830	$sig->send;
		2831	}
		2832	while (my $sig = shift @WAIT_FOR_TICK) {
		2833	$sig->send;
		2834	}
		2835
		2836	_post_tick;
1283	},	2837	},
1284	);	2838	);
1285		2839
		2840	{
		2841	BDB::max_poll_time $TICK * 0.1;
		2842	$BDB_POLL_WATCHER = Event->io (
		2843	reentrant => 0,
		2844	fd => BDB::poll_fileno,
		2845	poll => 'r',
		2846	prio => 0,
		2847	data => WF_AUTOCANCEL,
		2848	cb => \&BDB::poll_cb,
		2849	);
		2850	BDB::min_parallel 8;
		2851
		2852	BDB::set_sync_prepare {
		2853	my $status;
		2854	my $current = $Coro::current;
		2855	(
		2856	sub {
		2857	$status = $!;
		2858	$current->ready; undef $current;
		2859	},
		2860	sub {
		2861	Coro::schedule while defined $current;
		2862	$! = $status;
		2863	},
		2864	)
		2865	};
		2866
		2867	unless ($DB_ENV) {
		2868	$DB_ENV = BDB::db_env_create;
		2869
		2870	cf::sync_job {
		2871	eval {
		2872	BDB::db_env_open
		2873	$DB_ENV,
		2874	$BDB_ENV_DIR,
		2875	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2876	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2877	0666;
		2878
		2879	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2880
		2881	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2882	$DB_ENV->set_lk_detect;
		2883	};
		2884
		2885	cf::cleanup "db_env_open(db): $@" if $@;
		2886	};
		2887	}
		2888	}
		2889
		2890	{
		2891	IO::AIO::min_parallel 8;
		2892
		2893	undef $Coro::AIO::WATCHER;
1286	IO::AIO::max_poll_time $TICK * 0.2;	2894	IO::AIO::max_poll_time $TICK * 0.1;
1287		2895	$AIO_POLL_WATCHER = Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	2896	reentrant => 0,
1289	poll => 'r',
1290	prio => 5,
1291	data => WF_AUTOCANCEL,	2897	data => WF_AUTOCANCEL,
		2898	fd => IO::AIO::poll_fileno,
		2899	poll => 'r',
		2900	prio => 6,
1292	cb => \&IO::AIO::poll_cb);	2901	cb => \&IO::AIO::poll_cb,
		2902	);
		2903	}
		2904
		2905	# load additional modules
		2906	use cf::pod;
		2907
		2908	END { cf::emergency_save }
1293		2909
1294	1	2910	1
1295		2911

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