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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 1.228 by root, Mon Mar 26 16:53:33 2007 UTC

…		…
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
8	use Storable;	8	use Storable;
		9	use Event;
9	use Opcode;	10	use Opcode;
10	use Safe;	11	use Safe;
11	use Safe::Hole;	12	use Safe::Hole;
12		13
13	use Coro;	14	use Coro 3.52 ();
		15	use Coro::State;
14	use Coro::Event;	16	use Coro::Event;
15	use Coro::Timer;	17	use Coro::Timer;
16	use Coro::Signal;	18	use Coro::Signal;
17	use Coro::Semaphore;	19	use Coro::Semaphore;
		20	use Coro::AIO;
18		21
19	use IO::AIO 2.3;	22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
20	use YAML::Syck ();	26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
21	use Time::HiRes;	28	use Time::HiRes;
		29	use Compress::LZF;
22		30
		31	# configure various modules to our taste
		32	#
		33	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		34	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		35
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	36	$Event::Eval = 1; # no idea why this is required, but it is
24		37
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	39	$YAML::Syck::ImplicitUnicode = 1;
27		40
28	$Coro::main->prio (Coro::PRIO_MIN);	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29		42
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		44
32	our %COMMAND = ();	45	our %COMMAND = ();
33	our %COMMAND_TIME = ();	46	our %COMMAND_TIME = ();
		47
		48	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	49	our %EXTCMD = ();
		50	our %EXT_CORO = (); # coroutines bound to extensions
		51	our %EXT_MAP = (); # pluggable maps
35		52
		53	our $RELOAD; # number of reloads so far
36	our @EVENT;	54	our @EVENT;
37	our $LIBDIR = datadir . "/ext";	55	our $LIBDIR = datadir . "/ext";
38		56
39	our $TICK = MAX_TIME * 1e-6;	57	our $TICK = MAX_TIME * 1e-6;
40	our $TICK_WATCHER;	58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	61	our $NEXT_TICK;
		62	our $NOW;
		63	our $USE_FSYNC = 1; # use fsync to write maps - default off
		64
		65	our $BDB_POLL_WATCHER;
		66	our $DB_ENV;
42		67
43	our %CFG;	68	our %CFG;
44		69
45	our $UPTIME; $UPTIME ||= time;	70	our $UPTIME; $UPTIME ||= time;
		71	our $RUNTIME;
		72
		73	our %PLAYER; # all users
		74	our %MAP; # all maps
		75	our $LINK_MAP; # the special {link} map, which is always available
		76	our $RANDOM_MAPS = cf::localdir . "/random";
		77	our $BDB_ENV_DIR = cf::localdir . "/db";
		78
		79	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		80	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		81
		82	# used to convert map paths into valid unix filenames by replacing / by ∕
		83	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		84
		85	binmode STDOUT;
		86	binmode STDERR;
		87
		88	# read virtual server time, if available
		89	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		90	open my $fh, "<", cf::localdir . "/runtime"
		91	or die "unable to read runtime file: $!";
		92	$RUNTIME = <$fh> + 0.;
		93	}
		94
		95	mkdir cf::localdir;
		96	mkdir cf::localdir . "/" . cf::playerdir;
		97	mkdir cf::localdir . "/" . cf::tmpdir;
		98	mkdir cf::localdir . "/" . cf::uniquedir;
		99	mkdir $RANDOM_MAPS;
		100	mkdir $BDB_ENV_DIR;
		101
		102	our $EMERGENCY_POSITION;
		103
		104	sub cf::map::normalise;
46		105
47	#############################################################################	106	#############################################################################
48		107
49	=head2 GLOBAL VARIABLES	108	=head2 GLOBAL VARIABLES
50		109
51	=over 4	110	=over 4
52		111
53	=item $cf::UPTIME	112	=item $cf::UPTIME
54		113
55	The timestamp of the server start (so not actually an uptime).	114	The timestamp of the server start (so not actually an uptime).
		115
		116	=item $cf::RUNTIME
		117
		118	The time this server has run, starts at 0 and is increased by $cf::TICK on
		119	every server tick.
56		120
57	=item $cf::LIBDIR	121	=item $cf::LIBDIR
58		122
59	The perl library directory, where extensions and cf-specific modules can	123	The perl library directory, where extensions and cf-specific modules can
60	be found. It will be added to C<@INC> automatically.	124	be found. It will be added to C<@INC> automatically.
61		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
62	=item $cf::TICK	130	=item $cf::TICK
63		131
64	The interval between server ticks, in seconds.	132	The interval between server ticks, in seconds.
65		133
66	=item %cf::CFG	134	=item %cf::CFG
67		135
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	136	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	137	from wherever your confdir points to.
		138
		139	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		140
		141	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		142	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		143	processing has been done. Call C<< ->wait >> on them to maximise the
		144	window of cpu time available, or simply to synchronise to the server tick.
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	utf8::encode $msg;
		154
78	$msg .= "\n"	155	$msg .= "\n"
79	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
80		157
81	print STDERR "cfperl: $msg";
82	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
83	};	159	};
84	}	160	}
85		161
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	162	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	163	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
105		181
106	$Event::DIED = sub {	182	$Event::DIED = sub {
107	warn "error in event callback: @_";	183	warn "error in event callback: @_";
108	};	184	};
109		185
110	my %ext_pkg;
111	my @exts;
112	my @hook;
113
114	=head2 UTILITY FUNCTIONS	186	=head2 UTILITY FUNCTIONS
115		187
116	=over 4	188	=over 4
117		189
118	=cut	190	=item dumpval $ref
119		191
		192	=cut
		193
		194	sub dumpval {
		195	eval {
		196	local $SIG{__DIE__};
		197	my $d;
		198	if (1) {
		199	$d = new Data::Dumper([$_[0]], ["*var"]);
		200	$d->Terse(1);
		201	$d->Indent(2);
		202	$d->Quotekeys(0);
		203	$d->Useqq(1);
		204	#$d->Bless(...);
		205	$d->Seen($_[1]) if @_ > 1;
		206	$d = $d->Dump();
		207	}
		208	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		209	$d
		210	} || "[unable to dump $_[0]: '$@']";
		211	}
		212
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
121		214
122	=item $ref = cf::from_json $json	215	=item $ref = cf::from_json $json
123		216
124	Converts a JSON string into the corresponding perl data structure.	217	Converts a JSON string into the corresponding perl data structure.
125		218
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	219	=item $json = cf::to_json $ref
134		220
135	Converts a perl data structure into its JSON representation.	221	Converts a perl data structure into its JSON representation.
136		222
137	=cut	223	=item cf::lock_wait $string
138		224
139	sub to_json($) {	225	Wait until the given lock is available. See cf::lock_acquire.
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	226
141	JSON::Syck::Dump $_[0]	227	=item my $lock = cf::lock_acquire $string
		228
		229	Wait until the given lock is available and then acquires it and returns
		230	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		231	for example when the coroutine gets canceled), the lock is automatically
		232	returned.
		233
		234	Lock names should begin with a unique identifier (for example, cf::map::find
		235	uses map_find and cf::map::load uses map_load).
		236
		237	=cut
		238
		239	our %LOCK;
		240
		241	sub lock_wait($) {
		242	my ($key) = @_;
		243
		244	# wait for lock, if any
		245	while ($LOCK{$key}) {
		246	push @{ $LOCK{$key} }, $Coro::current;
		247	Coro::schedule;
		248	}
		249	}
		250
		251	sub lock_acquire($) {
		252	my ($key) = @_;
		253
		254	# wait, to be sure we are not locked
		255	lock_wait $key;
		256
		257	$LOCK{$key} = [];
		258
		259	Coro::guard {
		260	# wake up all waiters, to be on the safe side
		261	$_->ready for @{ delete $LOCK{$key} };
		262	}
		263	}
		264
		265	sub freeze_mainloop {
		266	return unless $TICK_WATCHER->is_active;
		267
		268	my $guard = Coro::guard {
		269	$TICK_WATCHER->start;
		270	};
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
		338	my $cb = shift;
		339
		340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $guard = cf::lock_acquire "write_runtime";
		352
		353	my $runtime = cf::localdir . "/runtime";
		354
		355	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		356	or return;
		357
		358	my $value = $cf::RUNTIME + 90 + 10;
		359	# 10 is the runtime save interval, for a monotonic clock
		360	# 60 allows for the watchdog to kill the server.
		361
		362	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		363	and return;
		364
		365	# always fsync - this file is important
		366	aio_fsync $fh
		367	and return;
		368
		369	close $fh
		370	or return;
		371
		372	aio_rename "$runtime~", $runtime
		373	and return;
		374
		375	1
142	}	376	}
143		377
144	=back	378	=back
145		379
146	=cut	380	=cut
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	511	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	512	our @CB_MAP = ();
279		513
280	my %attachment;	514	my %attachment;
281		515
		516	sub cf::attachable::thawer_merge {
		517	# simply override everything except _meta
		518	local $_[0]{_meta};
		519	%{$_[0]} = %{$_[1]};
		520	}
		521
282	sub _attach_cb($$$$) {	522	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	523	my ($registry, $event, $prio, $cb) = @_;
284		524
285	use sort 'stable';	525	use sort 'stable';
286		526
…		…
454	=cut	694	=cut
455		695
456	#############################################################################	696	#############################################################################
457	# object support	697	# object support
458		698
		699	sub reattach {
		700	# basically do the same as instantiate, without calling instantiate
		701	my ($obj) = @_;
		702
		703	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		704
		705	my $registry = $obj->registry;
		706
		707	@$registry = ();
		708
		709	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		710
		711	for my $name (keys %{ $obj->{_attachment} || {} }) {
		712	if (my $attach = $attachment{$name}) {
		713	for (@$attach) {
		714	my ($klass, @attach) = @$_;
		715	_attach $registry, $klass, @attach;
		716	}
		717	} else {
		718	warn "object uses attachment '$name' that is not available, postponing.\n";
		719	}
		720	}
		721	}
		722
459	cf::attachable->attach (	723	cf::attachable->attach (
460	prio => -1000000,	724	prio => -1000000,
461	on_instantiate => sub {	725	on_instantiate => sub {
462	my ($obj, $data) = @_;	726	my ($obj, $data) = @_;
463		727
…		…
467	my ($name, $args) = @$_;	731	my ($name, $args) = @$_;
468		732
469	$obj->attach ($name, %{$args || {} });	733	$obj->attach ($name, %{$args || {} });
470	}	734	}
471	},	735	},
472	on_reattach => sub {	736	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 {	737	on_clone => sub {
493	my ($src, $dst) = @_;	738	my ($src, $dst) = @_;
494		739
495	@{$dst->registry} = @{$src->registry};	740	@{$dst->registry} = @{$src->registry};
496		741
…		…
502	);	747	);
503		748
504	sub object_freezer_save {	749	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	750	my ($filename, $rdata, $objs) = @_;
506		751
		752	sync_job {
507	if (length $$rdata) {	753	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	754	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	755	$filename, length $$rdata, scalar @$objs;
510		756
511	if (open my $fh, ">:raw", "$filename~") {	757	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	758	chmod SAVE_MODE, $fh;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	759	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		760	aio_fsync $fh if $cf::USE_FSYNC;
519	close $fh;	761	close $fh;
		762
		763	if (@$objs) {
		764	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		765	chmod SAVE_MODE, $fh;
		766	my $data = Storable::nfreeze { version => 1, objs => $objs };
		767	aio_write $fh, 0, (length $data), $data, 0;
		768	aio_fsync $fh if $cf::USE_FSYNC;
		769	close $fh;
520	rename "$filename.pst~", "$filename.pst";	770	aio_rename "$filename.pst~", "$filename.pst";
		771	}
		772	} else {
		773	aio_unlink "$filename.pst";
		774	}
		775
		776	aio_rename "$filename~", $filename;
521	} else {	777	} else {
522	unlink "$filename.pst";	778	warn "FATAL: $filename~: $!\n";
523	}	779	}
524
525	rename "$filename~", $filename;
526	} else {	780	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	781	aio_unlink $filename;
531	unlink "$filename.pst";	782	aio_unlink "$filename.pst";
		783	}
532	}	784	}
533	}	785	}
534		786
535	sub object_freezer_as_string {	787	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	788	my ($rdata, $objs) = @_;
…		…
541	}	793	}
542		794
543	sub object_thawer_load {	795	sub object_thawer_load {
544	my ($filename) = @_;	796	my ($filename) = @_;
545		797
546	local $/;	798	my ($data, $av);
547		799
548	my $av;	800	(aio_load $filename, $data) >= 0
		801	or return;
549		802
550	#TODO: use sysread etc.	803	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	804	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	805	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	806	$av = eval { (Storable::thaw $av)->{objs} };
555	}	807	}
		808
		809	warn sprintf "loading %s (%d)\n",
		810	$filename, length $data, scalar @{$av || []};#d#
556	return ($data, $av);	811	return ($data, $av);
557	}
558
559	()
560	}	812	}
561		813
562	#############################################################################	814	#############################################################################
563	# command handling &c	815	# command handling &c
564		816
…		…
588	=cut	840	=cut
589		841
590	sub register_extcmd {	842	sub register_extcmd {
591	my ($name, $cb) = @_;	843	my ($name, $cb) = @_;
592		844
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	845	$EXTCMD{$name} = $cb;
597	}	846	}
598		847
599	cf::player->attach (	848	cf::player->attach (
600	on_command => sub {	849	on_command => sub {
601	my ($pl, $name, $params) = @_;	850	my ($pl, $name, $params) = @_;
…		…
614		863
615	my $msg = eval { from_json $buf };	864	my $msg = eval { from_json $buf };
616		865
617	if (ref $msg) {	866	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	867	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	868	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	869	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	870	}
622	}	871	}
623	} else {	872	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	873	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		875
627	cf::override;	876	cf::override;
628	},	877	},
629	);	878	);
630		879
631	sub register {
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	880	sub load_extension {
638	my ($path) = @_;	881	my ($path) = @_;
639		882
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	883	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
641	my $base = $1;	884	my $base = $1;
642	my $pkg = $1;	885	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;	886	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";	887	$pkg = "ext::$pkg";
645		888
646	warn "loading '$path' into '$pkg'\n";	889	warn "... loading '$path' into '$pkg'\n";
647		890
648	open my $fh, "<:utf8", $path	891	open my $fh, "<:utf8", $path
649	or die "$path: $!";	892	or die "$path: $!";
650		893
651	my $source =	894	my $source =
652	"package $pkg; use strict; use utf8;\n"	895	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"	896	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })	897	. (do { local $/; <$fh> })
655	. "\n};\n1";	898	. "\n};\n1";
656		899
657	eval $source	900	unless (eval $source) {
658	or die $@ ? "$path: $@\n"	901	my $msg = $@ ? "$path: $@\n"
659	: "extension disabled.\n";	902	: "extension disabled.\n";
660		903	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
661	push @exts, $pkg;	904	warn $@;
662	$ext_pkg{$base} = $pkg;	905	warn "mandatory extension failed to load, exiting.\n";
663		906	exit 1;
664	# no strict 'refs';	907	}
665	# @{"$pkg\::ISA"} = ext::;	908	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	# }	909	}
680		910
681	# remove commands	911	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	}	912	}
706		913
707	sub load_extensions {	914	sub load_extensions {
708	for my $ext (<$LIBDIR/*.ext>) {	915	for my $ext (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	916	next unless -r $ext;
…		…
713	} or warn "$ext not loaded: $@";	920	} or warn "$ext not loaded: $@";
714	}	921	}
715	}	922	}
716		923
717	#############################################################################	924	#############################################################################
718	# load/save/clean perl data associated with a map
719		925
720	*cf::mapsupport::on_clean = sub {	926	=head2 CORE EXTENSIONS
		927
		928	Functions and methods that extend core crossfire objects.
		929
		930	=cut
		931
		932	package cf::player;
		933
		934	use Coro::AIO;
		935
		936	=head3 cf::player
		937
		938	=over 4
		939
		940	=item cf::player::find $login
		941
		942	Returns the given player object, loading it if necessary (might block).
		943
		944	=cut
		945
		946	sub playerdir($) {
		947	cf::localdir
		948	. "/"
		949	. cf::playerdir
		950	. "/"
		951	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		952	}
		953
		954	sub path($) {
		955	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		956
		957	(playerdir $login) . "/$login.pl"
		958	}
		959
		960	sub find_active($) {
		961	$cf::PLAYER{$_[0]}
		962	and $cf::PLAYER{$_[0]}->active
		963	and $cf::PLAYER{$_[0]}
		964	}
		965
		966	sub exists($) {
		967	my ($login) = @_;
		968
		969	$cf::PLAYER{$login}
		970	or cf::sync_job { !aio_stat path $login }
		971	}
		972
		973	sub find($) {
		974	return $cf::PLAYER{$_[0]} || do {
		975	my $login = $_[0];
		976
		977	my $guard = cf::lock_acquire "user_find:$login";
		978
		979	$cf::PLAYER{$_[0]} || do {
		980	my $pl = load_pl path $login
		981	or return;
		982	$cf::PLAYER{$login} = $pl
		983	}
		984	}
		985	}
		986
		987	sub save($) {
		988	my ($pl) = @_;
		989
		990	return if $pl->{deny_save};
		991
		992	my $path = path $pl;
		993	my $guard = cf::lock_acquire "user_save:$path";
		994
		995	return if $pl->{deny_save};
		996
		997	aio_mkdir playerdir $pl, 0770;
		998	$pl->{last_save} = $cf::RUNTIME;
		999
		1000	$pl->save_pl ($path);
		1001	Coro::cede;
		1002	}
		1003
		1004	sub new($) {
		1005	my ($login) = @_;
		1006
		1007	my $self = create;
		1008
		1009	$self->ob->name ($login);
		1010	$self->{deny_save} = 1;
		1011
		1012	$cf::PLAYER{$login} = $self;
		1013
		1014	$self
		1015	}
		1016
		1017	=item $pl->quit_character
		1018
		1019	Nukes the player without looking back. If logged in, the connection will
		1020	be destroyed. May block for a long time.
		1021
		1022	=cut
		1023
		1024	sub quit_character {
		1025	my ($pl) = @_;
		1026
		1027	my $name = $pl->ob->name;
		1028
		1029	$pl->{deny_save} = 1;
		1030	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1031
		1032	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1033	$pl->deactivate;
		1034	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1035	$pl->ns->destroy if $pl->ns;
		1036
		1037	my $path = playerdir $pl;
		1038	my $temp = "$path~$cf::RUNTIME~deleting~";
		1039	aio_rename $path, $temp;
		1040	delete $cf::PLAYER{$pl->ob->name};
		1041	$pl->destroy;
		1042
		1043	my $prefix = qr<^~\Q$name\E/>;
		1044
		1045	# nuke player maps
		1046	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1047
		1048	IO::AIO::aio_rmtree $temp;
		1049	}
		1050
		1051	=item $pl->kick
		1052
		1053	Kicks a player out of the game. This destroys the connection.
		1054
		1055	=cut
		1056
		1057	sub kick {
		1058	my ($pl, $kicker) = @_;
		1059
		1060	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1061	$pl->killer ("kicked");
		1062	$pl->ns->destroy;
		1063	}
		1064
		1065	=item cf::player::list_logins
		1066
		1067	Returns am arrayref of all valid playernames in the system, can take a
		1068	while and may block, so not sync_job-capable, ever.
		1069
		1070	=cut
		1071
		1072	sub list_logins {
		1073	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1074	or return [];
		1075
		1076	my @logins;
		1077
		1078	for my $login (@$dirs) {
		1079	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1080	aio_read $fh, 0, 512, my $buf, 0 or next;
		1081	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1082
		1083	utf8::decode $login;
		1084	push @logins, $login;
		1085	}
		1086
		1087	\@logins
		1088	}
		1089
		1090	=item $player->maps
		1091
		1092	Returns an arrayref of map paths that are private for this
		1093	player. May block.
		1094
		1095	=cut
		1096
		1097	sub maps($) {
		1098	my ($pl) = @_;
		1099
		1100	$pl = ref $pl ? $pl->ob->name : $pl;
		1101
		1102	my $files = aio_readdir playerdir $pl
		1103	or return;
		1104
		1105	my @paths;
		1106
		1107	for (@$files) {
		1108	utf8::decode $_;
		1109	next if /\.(?:pl|pst)$/;
		1110	next unless /^$PATH_SEP/o;
		1111
		1112	push @paths, cf::map::normalise "~$pl/$_";
		1113	}
		1114
		1115	\@paths
		1116	}
		1117
		1118	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1119
		1120	Sends an ext reply to the player.
		1121
		1122	=cut
		1123
		1124	sub ext_reply($$$%) {
		1125	my ($self, $id, %msg) = @_;
		1126
		1127	$msg{msgid} = $id;
		1128
		1129	$self->send ("ext " . cf::to_json \%msg);
		1130	}
		1131
		1132	package cf;
		1133
		1134	=back
		1135
		1136
		1137	=head3 cf::map
		1138
		1139	=over 4
		1140
		1141	=cut
		1142
		1143	package cf::map;
		1144
		1145	use Fcntl;
		1146	use Coro::AIO;
		1147
		1148	use overload
		1149	'""' => \&as_string,
		1150	fallback => 1;
		1151
		1152	our $MAX_RESET = 3600;
		1153	our $DEFAULT_RESET = 3000;
		1154
		1155	sub generate_random_map {
		1156	my ($self, $rmp) = @_;
		1157	# mit "rum" bekleckern, nicht
		1158	$self->_create_random_map (
		1159	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1160	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1161	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1162	$rmp->{exit_on_final_map},
		1163	$rmp->{xsize}, $rmp->{ysize},
		1164	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1165	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1166	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1167	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1168	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1169	(cf::region::find $rmp->{region}), $rmp->{custom}
		1170	)
		1171	}
		1172
		1173	=item cf::map->register ($regex, $prio)
		1174
		1175	Register a handler for the map path matching the given regex at the
		1176	givne priority (higher is better, built-in handlers have priority 0, the
		1177	default).
		1178
		1179	=cut
		1180
		1181	sub register {
		1182	my (undef, $regex, $prio) = @_;
		1183	my $pkg = caller;
		1184
		1185	no strict;
		1186	push @{"$pkg\::ISA"}, __PACKAGE__;
		1187
		1188	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1189	}
		1190
		1191	# also paths starting with '/'
		1192	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1193
		1194	sub thawer_merge {
		1195	my ($self, $merge) = @_;
		1196
		1197	# we have to keep some variables in memory intact
		1198	local $self->{path};
		1199	local $self->{load_path};
		1200	local $self->{deny_save};
		1201	local $self->{deny_reset};
		1202
		1203	$self->SUPER::thawer_merge ($merge);
		1204	}
		1205
		1206	sub normalise {
		1207	my ($path, $base) = @_;
		1208
		1209	$path = "$path"; # make sure its a string
		1210
		1211	$path =~ s/\.map$//;
		1212
		1213	# map plan:
		1214	#
		1215	# /! non-realised random map exit (special hack!)
		1216	# {... are special paths that are not being touched
		1217	# ?xxx/... are special absolute paths
		1218	# ?random/... random maps
		1219	# /... normal maps
		1220	# ~user/... per-player map of a specific user
		1221
		1222	$path =~ s/$PATH_SEP/\//go;
		1223
		1224	# treat it as relative path if it starts with
		1225	# something that looks reasonable
		1226	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1227	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1228
		1229	$base =~ s{[^/]+/?$}{};
		1230	$path = "$base/$path";
		1231	}
		1232
		1233	for ($path) {
		1234	redo if s{//}{/};
		1235	redo if s{/\.?/}{/};
		1236	redo if s{/[^/]+/\.\./}{/};
		1237	}
		1238
		1239	$path
		1240	}
		1241
		1242	sub new_from_path {
		1243	my (undef, $path, $base) = @_;
		1244
		1245	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1246
		1247	$path = normalise $path, $base;
		1248
		1249	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1250	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1251	my $self = bless cf::map::new, $pkg;
		1252	$self->{path} = $path; $self->path ($path);
		1253	$self->init; # pass $1 etc.
		1254	return $self;
		1255	}
		1256	}
		1257
		1258	Carp::carp "unable to resolve path '$path' (base '$base').";
		1259	()
		1260	}
		1261
		1262	sub init {
		1263	my ($self) = @_;
		1264
		1265	$self
		1266	}
		1267
		1268	sub as_string {
		1269	my ($self) = @_;
		1270
		1271	"$self->{path}"
		1272	}
		1273
		1274	# the displayed name, this is a one way mapping
		1275	sub visible_name {
		1276	&as_string
		1277	}
		1278
		1279	# the original (read-only) location
		1280	sub load_path {
		1281	my ($self) = @_;
		1282
		1283	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1284	}
		1285
		1286	# the temporary/swap location
		1287	sub save_path {
		1288	my ($self) = @_;
		1289
		1290	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1291	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1292	}
		1293
		1294	# the unique path, undef == no special unique path
		1295	sub uniq_path {
		1296	my ($self) = @_;
		1297
		1298	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1299	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1300	}
		1301
		1302	# and all this just because we cannot iterate over
		1303	# all maps in C++...
		1304	sub change_all_map_light {
		1305	my ($change) = @_;
		1306
		1307	$_->change_map_light ($change)
		1308	for grep $_->outdoor, values %cf::MAP;
		1309	}
		1310
		1311	sub unlink_save {
		1312	my ($self) = @_;
		1313
		1314	utf8::encode (my $save = $self->save_path);
		1315	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1316	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1317	}
		1318
		1319	sub load_header_from($) {
		1320	my ($self, $path) = @_;
		1321
		1322	utf8::encode $path;
		1323	#aio_open $path, O_RDONLY, 0
		1324	# or return;
		1325
		1326	$self->_load_header ($path)
		1327	or return;
		1328
		1329	$self->{load_path} = $path;
		1330
		1331	1
		1332	}
		1333
		1334	sub load_header_orig {
		1335	my ($self) = @_;
		1336
		1337	$self->load_header_from ($self->load_path)
		1338	}
		1339
		1340	sub load_header_temp {
		1341	my ($self) = @_;
		1342
		1343	$self->load_header_from ($self->save_path)
		1344	}
		1345
		1346	sub prepare_temp {
		1347	my ($self) = @_;
		1348
		1349	$self->last_access ((delete $self->{last_access})
		1350	|| $cf::RUNTIME); #d#
		1351	# safety
		1352	$self->{instantiate_time} = $cf::RUNTIME
		1353	if $self->{instantiate_time} > $cf::RUNTIME;
		1354	}
		1355
		1356	sub prepare_orig {
		1357	my ($self) = @_;
		1358
		1359	$self->{load_original} = 1;
		1360	$self->{instantiate_time} = $cf::RUNTIME;
		1361	$self->last_access ($cf::RUNTIME);
		1362	$self->instantiate;
		1363	}
		1364
		1365	sub load_header {
		1366	my ($self) = @_;
		1367
		1368	if ($self->load_header_temp) {
		1369	$self->prepare_temp;
		1370	} else {
		1371	$self->load_header_orig
		1372	or return;
		1373	$self->prepare_orig;
		1374	}
		1375
		1376	1
		1377	}
		1378
		1379	sub find;
		1380	sub find {
		1381	my ($path, $origin) = @_;
		1382
		1383	$path = normalise $path, $origin && $origin->path;
		1384
		1385	cf::lock_wait "map_find:$path";
		1386
		1387	$cf::MAP{$path} || do {
		1388	my $guard = cf::lock_acquire "map_find:$path";
		1389	my $map = new_from_path cf::map $path
		1390	or return;
		1391
		1392	$map->{last_save} = $cf::RUNTIME;
		1393
		1394	$map->load_header
		1395	or return;
		1396
		1397	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1398	# doing this can freeze the server in a sync job, obviously
		1399	#$cf::WAIT_FOR_TICK->wait;
		1400	$map->reset;
		1401	undef $guard;
		1402	return find $path;
		1403	}
		1404
		1405	$cf::MAP{$path} = $map
		1406	}
		1407	}
		1408
		1409	sub pre_load { }
		1410	sub post_load { }
		1411
		1412	sub load {
		1413	my ($self) = @_;
		1414
		1415	local $self->{deny_reset} = 1; # loading can take a long time
		1416
		1417	my $path = $self->{path};
		1418	my $guard = cf::lock_acquire "map_load:$path";
		1419
		1420	return if $self->in_memory != cf::MAP_SWAPPED;
		1421
		1422	$self->in_memory (cf::MAP_LOADING);
		1423
		1424	$self->alloc;
		1425
		1426	$self->pre_load;
		1427
		1428	$self->_load_objects ($self->{load_path}, 1)
		1429	or return;
		1430
		1431	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1432	if delete $self->{load_original};
		1433
		1434	if (my $uniq = $self->uniq_path) {
		1435	utf8::encode $uniq;
		1436	if (aio_open $uniq, O_RDONLY, 0) {
		1437	$self->clear_unique_items;
		1438	$self->_load_objects ($uniq, 0);
		1439	}
		1440	}
		1441
		1442	Coro::cede;
		1443
		1444	# now do the right thing for maps
		1445	$self->link_multipart_objects;
		1446
		1447	unless ($self->{deny_activate}) {
		1448	$self->decay_objects;
		1449	$self->fix_auto_apply;
		1450	$self->update_buttons;
		1451	Coro::cede;
		1452	$self->set_darkness_map;
		1453	$self->difficulty ($self->estimate_difficulty)
		1454	unless $self->difficulty;
		1455	Coro::cede;
		1456	$self->activate;
		1457	}
		1458
		1459	$self->post_load;
		1460
		1461	$self->in_memory (cf::MAP_IN_MEMORY);
		1462	}
		1463
		1464	sub customise_for {
		1465	my ($self, $ob) = @_;
		1466
		1467	return find "~" . $ob->name . "/" . $self->{path}
		1468	if $self->per_player;
		1469
		1470	$self
		1471	}
		1472
		1473	# find and load all maps in the 3x3 area around a map
		1474	sub load_diag {
721	my ($map) = @_;	1475	my ($map) = @_;
722		1476
723	my $path = $map->tmpname;	1477	my @diag; # diagonal neighbours
724	defined $path or return;
725		1478
726	unlink "$path.pst";	1479	for (0 .. 3) {
727	};	1480	my $neigh = $map->tile_path ($_)
		1481	or next;
		1482	$neigh = find $neigh, $map
		1483	or next;
		1484	$neigh->load;
728		1485
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1486	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1487	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1488	}
730		1489
731	#############################################################################	1490	for (@diag) {
732	# load/save perl data associated with player->ob objects	1491	my $neigh = find @$_
733		1492	or next;
734	sub all_objects(@) {	1493	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1494	}
736	}	1495	}
737		1496
738	# TODO: compatibility cruft, remove when no longer needed	1497	sub find_sync {
739	cf::player->attach (	1498	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1499
743	for my $o (all_objects $pl->ob) {	1500	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1501	}
745	$o->set_ob_key_value ("_perl_data");
746		1502
747	%$o = %{ Storable::thaw pack "H*", $value };	1503	sub do_load_sync {
		1504	my ($map) = @_;
		1505
		1506	cf::sync_job { $map->load };
		1507	}
		1508
		1509	our %MAP_PREFETCH;
		1510	our $MAP_PREFETCHER = undef;
		1511
		1512	sub find_async {
		1513	my ($path, $origin) = @_;
		1514
		1515	$path = normalise $path, $origin && $origin->{path};
		1516
		1517	if (my $map = $cf::MAP{$path}) {
		1518	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1519	}
		1520
		1521	undef $MAP_PREFETCH{$path};
		1522	$MAP_PREFETCHER ||= cf::async {
		1523	while (%MAP_PREFETCH) {
		1524	for my $path (keys %MAP_PREFETCH) {
		1525	my $map = find $path
		1526	or next;
		1527	$map->load;
		1528
		1529	delete $MAP_PREFETCH{$path};
748	}	1530	}
749	}	1531	}
		1532	undef $MAP_PREFETCHER;
		1533	};
		1534	$MAP_PREFETCHER->prio (6);
		1535
		1536	()
		1537	}
		1538
		1539	sub save {
		1540	my ($self) = @_;
		1541
		1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1543
		1544	$self->{last_save} = $cf::RUNTIME;
		1545
		1546	return unless $self->dirty;
		1547
		1548	my $save = $self->save_path; utf8::encode $save;
		1549	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1550
		1551	$self->{load_path} = $save;
		1552
		1553	return if $self->{deny_save};
		1554
		1555	local $self->{last_access} = $self->last_access;#d#
		1556
		1557	cf::async {
		1558	$_->contr->save for $self->players;
		1559	};
		1560
		1561	if ($uniq) {
		1562	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1563	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1564	} else {
		1565	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
750	},	1566	}
751	);	1567	}
752		1568
753	#############################################################################	1569	sub swap_out {
		1570	my ($self) = @_;
754		1571
755	=head2 CORE EXTENSIONS	1572	# save first because save cedes
		1573	$self->save;
756		1574
757	Functions and methods that extend core crossfire objects.	1575	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1576
759	=head3 cf::player	1577	return if $self->players;
		1578	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1579	return if $self->{deny_save};
		1580
		1581	$self->clear;
		1582	$self->in_memory (cf::MAP_SWAPPED);
		1583	}
		1584
		1585	sub reset_at {
		1586	my ($self) = @_;
		1587
		1588	# TODO: safety, remove and allow resettable per-player maps
		1589	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1590	return 1e99 if $self->{deny_reset};
		1591
		1592	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1593	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1594
		1595	$time + $to
		1596	}
		1597
		1598	sub should_reset {
		1599	my ($self) = @_;
		1600
		1601	$self->reset_at <= $cf::RUNTIME
		1602	}
		1603
		1604	sub reset {
		1605	my ($self) = @_;
		1606
		1607	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1608
		1609	return if $self->players;
		1610	return if $self->isa ("ext::map_per_player");#d#
		1611
		1612	warn "resetting map ", $self->path;#d#
		1613
		1614	$self->in_memory (cf::MAP_SWAPPED);
		1615
		1616	# need to save uniques path
		1617	unless ($self->{deny_save}) {
		1618	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1619
		1620	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1621	if $uniq;
		1622	}
		1623
		1624	delete $cf::MAP{$self->path};
		1625
		1626	$self->clear;
		1627
		1628	$_->clear_links_to ($self) for values %cf::MAP;
		1629
		1630	$self->unlink_save;
		1631	$self->destroy;
		1632	}
		1633
		1634	my $nuke_counter = "aaaa";
		1635
		1636	sub nuke {
		1637	my ($self) = @_;
		1638
		1639	delete $cf::MAP{$self->path};
		1640
		1641	$self->unlink_save;
		1642
		1643	bless $self, "cf::map";
		1644	delete $self->{deny_reset};
		1645	$self->{deny_save} = 1;
		1646	$self->reset_timeout (1);
		1647	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1648
		1649	$cf::MAP{$self->path} = $self;
		1650
		1651	$self->reset; # polite request, might not happen
		1652	}
		1653
		1654	=item cf::map::unique_maps
		1655
		1656	Returns an arrayref of paths of all shared maps that have
		1657	instantiated unique items. May block.
		1658
		1659	=cut
		1660
		1661	sub unique_maps() {
		1662	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1663	or return;
		1664
		1665	my @paths;
		1666
		1667	for (@$files) {
		1668	utf8::decode $_;
		1669	next if /\.pst$/;
		1670	next unless /^$PATH_SEP/o;
		1671
		1672	push @paths, cf::map::normalise $_;
		1673	}
		1674
		1675	\@paths
		1676	}
		1677
		1678	package cf;
		1679
		1680	=back
		1681
		1682	=head3 cf::object
		1683
		1684	=cut
		1685
		1686	package cf::object;
760		1687
761	=over 4	1688	=over 4
762		1689
763	=item cf::player::exists $login	1690	=item $ob->inv_recursive
764		1691
765	Returns true when the given account exists.	1692	Returns the inventory of the object _and_ their inventories, recursively.
766		1693
767	=cut	1694	=cut
768		1695
769	sub cf::player::exists($) {	1696	sub inv_recursive_;
770	cf::player::find $_[0]	1697	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1698	map { $_, inv_recursive_ $_->inv } @_
772	}	1699	}
773		1700
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1701	sub inv_recursive {
775		1702	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	}	1703	}
		1704
		1705	package cf;
787		1706
788	=back	1707	=back
789		1708
790	=head3 cf::object::player	1709	=head3 cf::object::player
791		1710
…		…
829	(ref $cf::CFG{"may_$access"}	1748	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1749	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	1750	: $cf::CFG{"may_$access"})
832	}	1751	}
833		1752
		1753	=item $player_object->enter_link
		1754
		1755	Freezes the player and moves him/her to a special map (C<{link}>).
		1756
		1757	The player should be reasonably safe there for short amounts of time. You
		1758	I<MUST> call C<leave_link> as soon as possible, though.
		1759
		1760	Will never block.
		1761
		1762	=item $player_object->leave_link ($map, $x, $y)
		1763
		1764	Moves the player out of the special C<{link}> map onto the specified
		1765	map. If the map is not valid (or omitted), the player will be moved back
		1766	to the location he/she was before the call to C<enter_link>, or, if that
		1767	fails, to the emergency map position.
		1768
		1769	Might block.
		1770
		1771	=cut
		1772
		1773	sub link_map {
		1774	unless ($LINK_MAP) {
		1775	$LINK_MAP = cf::map::find "{link}"
		1776	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1777	$LINK_MAP->load;
		1778	}
		1779
		1780	$LINK_MAP
		1781	}
		1782
		1783	sub cf::object::player::enter_link {
		1784	my ($self) = @_;
		1785
		1786	$self->deactivate_recursive;
		1787
		1788	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1789
		1790	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1791	if $self->map;
		1792
		1793	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1794	}
		1795
		1796	sub cf::object::player::leave_link {
		1797	my ($self, $map, $x, $y) = @_;
		1798
		1799	my $link_pos = delete $self->{_link_pos};
		1800
		1801	unless ($map) {
		1802	# restore original map position
		1803	($map, $x, $y) = @{ $link_pos || [] };
		1804	$map = cf::map::find $map;
		1805
		1806	unless ($map) {
		1807	($map, $x, $y) = @$EMERGENCY_POSITION;
		1808	$map = cf::map::find $map
		1809	or die "FATAL: cannot load emergency map\n";
		1810	}
		1811	}
		1812
		1813	($x, $y) = (-1, -1)
		1814	unless (defined $x) && (defined $y);
		1815
		1816	# use -1 or undef as default coordinates, not 0, 0
		1817	($x, $y) = ($map->enter_x, $map->enter_y)
		1818	if $x <=0 && $y <= 0;
		1819
		1820	$map->load;
		1821	$map->load_diag;
		1822
		1823	return unless $self->contr->active;
		1824	$self->activate_recursive;
		1825
		1826	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1827	$self->enter_map ($map, $x, $y);
		1828	}
		1829
		1830	cf::player->attach (
		1831	on_logout => sub {
		1832	my ($pl) = @_;
		1833
		1834	# abort map switching before logout
		1835	if ($pl->ob->{_link_pos}) {
		1836	cf::sync_job {
		1837	$pl->ob->leave_link
		1838	};
		1839	}
		1840	},
		1841	on_login => sub {
		1842	my ($pl) = @_;
		1843
		1844	# try to abort aborted map switching on player login :)
		1845	# should happen only on crashes
		1846	if ($pl->ob->{_link_pos}) {
		1847	$pl->ob->enter_link;
		1848	(async {
		1849	$pl->ob->reply (undef,
		1850	"There was an internal problem at your last logout, "
		1851	. "the server will try to bring you to your intended destination in a second.",
		1852	cf::NDI_RED);
		1853	# we need this sleep as the login has a concurrent enter_exit running
		1854	# and this sleep increases chances of the player not ending up in scorn
		1855	Coro::Timer::sleep 1;
		1856	$pl->ob->leave_link;
		1857	})->prio (2);
		1858	}
		1859	},
		1860	);
		1861
		1862	=item $player_object->goto ($path, $x, $y)
		1863
		1864	=cut
		1865
		1866	sub cf::object::player::goto {
		1867	my ($self, $path, $x, $y) = @_;
		1868
		1869	$self->enter_link;
		1870
		1871	(async {
		1872	my $map = eval {
		1873	my $map = cf::map::find $path;
		1874	$map = $map->customise_for ($self) if $map;
		1875	$map
		1876	} or
		1877	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1878
		1879	$self->leave_link ($map, $x, $y);
		1880	})->prio (1);
		1881	}
		1882
		1883	=item $player_object->enter_exit ($exit_object)
		1884
		1885	=cut
		1886
		1887	sub parse_random_map_params {
		1888	my ($spec) = @_;
		1889
		1890	my $rmp = { # defaults
		1891	xsize => (cf::rndm 15, 40),
		1892	ysize => (cf::rndm 15, 40),
		1893	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1894	#layout => string,
		1895	};
		1896
		1897	for (split /\n/, $spec) {
		1898	my ($k, $v) = split /\s+/, $_, 2;
		1899
		1900	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1901	}
		1902
		1903	$rmp
		1904	}
		1905
		1906	sub prepare_random_map {
		1907	my ($exit) = @_;
		1908
		1909	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1910
		1911	# all this does is basically replace the /! path by
		1912	# a new random map path (?random/...) with a seed
		1913	# that depends on the exit object
		1914
		1915	my $rmp = parse_random_map_params $exit->msg;
		1916
		1917	if ($exit->map) {
		1918	$rmp->{region} = $exit->region->name;
		1919	$rmp->{origin_map} = $exit->map->path;
		1920	$rmp->{origin_x} = $exit->x;
		1921	$rmp->{origin_y} = $exit->y;
		1922	}
		1923
		1924	$rmp->{random_seed} ||= $exit->random_seed;
		1925
		1926	my $data = cf::to_json $rmp;
		1927	my $md5 = Digest::MD5::md5_hex $data;
		1928	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1929
		1930	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1931	aio_write $fh, 0, (length $data), $data, 0;
		1932	undef $fh;
		1933	aio_rename "$meta~", $meta;
		1934
		1935	$exit->slaying ("?random/$md5");
		1936	$exit->msg (undef);
		1937	}
		1938	}
		1939
		1940	sub cf::object::player::enter_exit {
		1941	my ($self, $exit) = @_;
		1942
		1943	return unless $self->type == cf::PLAYER;
		1944
		1945	if ($exit->slaying eq "/!") {
		1946	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1947	cf::sync_job { prepare_random_map $exit };
		1948	}
		1949
		1950	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1951	my $hp = $exit->stats->hp;
		1952	my $sp = $exit->stats->sp;
		1953
		1954	$self->enter_link;
		1955
		1956	(async {
		1957	$self->deactivate_recursive; # just to be sure
		1958	unless (eval {
		1959	$self->goto ($slaying, $hp, $sp);
		1960
		1961	1;
		1962	}) {
		1963	$self->message ("Something went wrong deep within the crossfire server. "
		1964	. "I'll try to bring you back to the map you were before. "
		1965	. "Please report this to the dungeon master!",
		1966	cf::NDI_UNIQUE | cf::NDI_RED);
		1967
		1968	warn "ERROR in enter_exit: $@";
		1969	$self->leave_link;
		1970	}
		1971	})->prio (1);
		1972	}
		1973
834	=head3 cf::client	1974	=head3 cf::client
835		1975
836	=over 4	1976	=over 4
837		1977
838	=item $client->send_drawinfo ($text, $flags)	1978	=item $client->send_drawinfo ($text, $flags)
…		…
844		1984
845	sub cf::client::send_drawinfo {	1985	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	1986	my ($self, $text, $flags) = @_;
847		1987
848	utf8::encode $text;	1988	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	1989	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	1990	}
851		1991
852		1992
853	=item $success = $client->query ($flags, "text", \&cb)	1993	=item $success = $client->query ($flags, "text", \&cb)
854		1994
…		…
881	on_reply => sub {	2021	on_reply => sub {
882	my ($ns, $msg) = @_;	2022	my ($ns, $msg) = @_;
883		2023
884	# this weird shuffling is so that direct followup queries	2024	# this weird shuffling is so that direct followup queries
885	# get handled first	2025	# get handled first
886	my $queue = delete $ns->{query_queue};	2026	my $queue = delete $ns->{query_queue}
		2027	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		2028
888	(shift @$queue)->[1]->($msg);	2029	(shift @$queue)->[1]->($msg);
		2030	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		2031
890	push @{ $ns->{query_queue} }, @$queue;	2032	push @{ $ns->{query_queue} }, @$queue;
891		2033
892	if (@{ $ns->{query_queue} } == @$queue) {	2034	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	2035	if (@$queue) {
…		…
897	}	2039	}
898	}	2040	}
899	},	2041	},
900	);	2042	);
901		2043
902	=item $client->coro (\&cb)	2044	=item $client->async (\&cb)
903		2045
904	Create a new coroutine, running the specified callback. The coroutine will	2046	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	2047	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	2048	or loss of connection).
907		2049
908	=cut	2050	=cut
909		2051
910	sub cf::client::coro {	2052	sub cf::client::async {
911	my ($self, $cb) = @_;	2053	my ($self, $cb) = @_;
912		2054
913	my $coro; $coro = async {	2055	my $coro = &Coro::async ($cb);
914	eval {	2056
915	$cb->();	2057	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	2058	delete $self->{_coro}{$coro+0};
919	};	2059	});
920		2060
921	$self->{_coro}{$coro+0} = $coro;	2061	$self->{_coro}{$coro+0} = $coro;
		2062
		2063	$coro
922	}	2064	}
923		2065
924	cf::client->attach (	2066	cf::client->attach (
925	on_destroy => sub {	2067	on_destroy => sub {
926	my ($ns) = @_;	2068	my ($ns) = @_;
…		…
951		2093
952	# here we export the classes and methods available to script code	2094	# here we export the classes and methods available to script code
953		2095
954	=pod	2096	=pod
955		2097
956	The following fucntions and emthods are available within a safe environment:	2098	The following functions and methods are available within a safe environment:
957		2099
958	cf::object contr pay_amount pay_player map	2100	cf::object contr pay_amount pay_player map
959	cf::object::player player	2101	cf::object::player player
960	cf::player peaceful	2102	cf::player peaceful
961	cf::map trigger	2103	cf::map trigger
…		…
1054	The parameter C<$family> should best start with the name of the extension	2196	The parameter C<$family> should best start with the name of the extension
1055	using it, it should be unique.	2197	using it, it should be unique.
1056		2198
1057	=over 4	2199	=over 4
1058		2200
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	2201	=item $value = cf::db_get $family => $key
1066		2202
1067	Returns a single value from the database	2203	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		2204
1074	=item cf::db_put $family => $key => $value	2205	=item cf::db_put $family => $key => $value
1075		2206
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you	2207	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		2208
1087	=cut	2209	=cut
1088		2210
1089	our $DB;	2211	our $DB;
1090		2212
1091	{	2213	sub db_init {
		2214	unless ($DB) {
		2215	$DB = BDB::db_create $DB_ENV;
		2216
		2217	cf::sync_job {
		2218	eval {
		2219	$DB->set_flags (BDB::CHKSUM);
		2220
		2221	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2222	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2223	cf::cleanup "db_open(db): $!" if $!;
		2224	};
		2225	cf::cleanup "db_open(db): $@" if $@;
		2226	};
		2227
1092	my $path = cf::localdir . "/database.pst";	2228	my $path = cf::localdir . "/database.pst";
		2229	if (stat $path) {
		2230	cf::sync_job {
		2231	my $pst = Storable::retrieve $path;
1093		2232
1094	sub db_load() {	2233	cf::db_put (board => data => $pst->{board});
1095	warn "loading database $path\n";#d# remove later	2234	cf::db_put (guildrules => data => $pst->{guildrules});
1096	$DB = stat $path ? Storable::retrieve $path : { };	2235	cf::db_put (rent => balance => $pst->{rent}{balance});
1097	}	2236	BDB::db_env_txn_checkpoint $DB_ENV;
1098		2237
1099	my $pid;	2238	unlink $path;
1100
1101	sub db_save() {
1102	warn "saving database $path\n";#d# remove later
1103	waitpid $pid, 0 if $pid;
1104	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}	2239	};
1110	}	2240	}
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	});	2241	}
		2242	}
1122		2243
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {	2244	sub db_get($$) {
1129	@_ >= 2	2245	my $key = "$_[0]/$_[1]";
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133		2246
		2247	cf::sync_job {
		2248	BDB::db_get $DB, undef, $key, my $data;
		2249
		2250	$! ? ()
		2251	: Compress::LZF::sthaw $data
		2252	}
		2253	}
		2254
1134	sub db_put($$;$) {	2255	sub db_put($$$) {
1135	if (@_ >= 3) {	2256	BDB::dbreq_pri 4;
1136	$DB->{$_[0]}{$_[1]} = $_[2];	2257	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2258	}
		2259
		2260	#############################################################################
		2261	# the server's init and main functions
		2262
		2263	sub load_faces {
		2264	my $path = sprintf "%s/faces", cf::datadir;
		2265
		2266	warn "loading faces from $path\n";
		2267
		2268	my $faces;
		2269	0 < aio_load $path, $faces
		2270	or die "$path: $!";
		2271
		2272	Coro::cede;
		2273	$faces = Storable::thaw $faces;
		2274	Coro::cede;
		2275
		2276	my $meta = delete $faces->{""};
		2277	$meta->{version} == 1
		2278	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2279
		2280	while (my ($face, $info) = each %$faces) {
		2281	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2282	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2283	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2284	Coro::cede;
		2285	}
		2286
		2287	while (my ($face, $info) = each %$faces) {
		2288	next unless $info->{smooth};
		2289	my $idx = cf::face::find $face
		2290	or next;
		2291	if (my $smooth = cf::face::find $info->{smooth}) {
		2292	cf::face::set_smooth $idx, $smooth;
1137	} else {	2293	} else {
1138	$DB->{$_[0]} = $_[1];	2294	warn "smooth face '$info->{smooth}' not found for face '$face'";
1139	}
1140	db_dirty;
1141	}
1142
1143	cf::global->attach (
1144	prio => 10000,
1145	on_cleanup => sub {
1146	db_sync;
1147	},	2295	}
1148	);	2296	Coro::cede;
1149	}	2297	}
1150		2298
1151	#############################################################################	2299	1
1152	# the server's main()	2300	}
		2301
		2302	sub reload_resources {
		2303	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2304	or die "unable to load regions file\n";#d#
		2305	load_faces
		2306	or die "unable to load faces\n";#d#
		2307	}
		2308
		2309	sub init {
		2310	reload_resources;
		2311	}
1153		2312
1154	sub cfg_load {	2313	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2314	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;	2315	or return;
1157		2316
1158	local $/;	2317	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2318	*CFG = YAML::Syck::Load <$fh>;
		2319
		2320	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2321
		2322	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2323	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2324
		2325	if (exists $CFG{mlockall}) {
		2326	eval {
		2327	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2328	and die "WARNING: m(un)lockall failed: $!\n";
		2329	};
		2330	warn $@ if $@;
		2331	}
1160	}	2332	}
1161		2333
1162	sub main {	2334	sub main {
		2335	# we must not ever block the main coroutine
		2336	local $Coro::idle = sub {
		2337	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2338	(async {
		2339	Event::one_event;
		2340	})->prio (Coro::PRIO_MAX);
		2341	};
		2342
1163	cfg_load;	2343	cfg_load;
1164	db_load;	2344	db_init;
1165	load_extensions;	2345	load_extensions;
		2346
		2347	$TICK_WATCHER->start;
1166	Event::loop;	2348	Event::loop;
1167	}	2349	}
1168		2350
1169	#############################################################################	2351	#############################################################################
1170	# initialisation	2352	# initialisation and cleanup
1171		2353
		2354	# install some emergency cleanup handlers
		2355	BEGIN {
		2356	for my $signal (qw(INT HUP TERM)) {
		2357	Event->signal (
		2358	reentrant => 0,
		2359	data => WF_AUTOCANCEL,
		2360	signal => $signal,
		2361	prio => 0,
		2362	cb => sub {
		2363	cf::cleanup "SIG$signal";
		2364	},
		2365	);
		2366	}
		2367	}
		2368
		2369	sub emergency_save() {
		2370	my $freeze_guard = cf::freeze_mainloop;
		2371
		2372	warn "enter emergency perl save\n";
		2373
		2374	cf::sync_job {
		2375	# use a peculiar iteration method to avoid tripping on perl
		2376	# refcount bugs in for. also avoids problems with players
		2377	# and maps saved/destroyed asynchronously.
		2378	warn "begin emergency player save\n";
		2379	for my $login (keys %cf::PLAYER) {
		2380	my $pl = $cf::PLAYER{$login} or next;
		2381	$pl->valid or next;
		2382	$pl->save;
		2383	}
		2384	warn "end emergency player save\n";
		2385
		2386	warn "begin emergency map save\n";
		2387	for my $path (keys %cf::MAP) {
		2388	my $map = $cf::MAP{$path} or next;
		2389	$map->valid or next;
		2390	$map->save;
		2391	}
		2392	warn "end emergency map save\n";
		2393
		2394	warn "begin emergency database checkpoint\n";
		2395	BDB::db_env_txn_checkpoint $DB_ENV;
		2396	warn "end emergency database checkpoint\n";
		2397	};
		2398
		2399	warn "leave emergency perl save\n";
		2400	}
		2401
		2402	sub post_cleanup {
		2403	my ($make_core) = @_;
		2404
		2405	warn Carp::longmess "post_cleanup backtrace"
		2406	if $make_core;
		2407	}
		2408
1172	sub _perl_reload(&) {	2409	sub reload() {
1173	my ($msg) = @_;	2410	# can/must only be called in main
		2411	if ($Coro::current != $Coro::main) {
		2412	warn "can only reload from main coroutine";
		2413	return;
		2414	}
1174		2415
1175	$msg->("reloading...");	2416	warn "reloading...";
1176		2417
1177	eval {	2418	warn "entering sync_job";
1178	# cancel all watchers	2419
		2420	cf::sync_job {
		2421	cf::write_runtime; # external watchdog should not bark
		2422	cf::emergency_save;
		2423	cf::write_runtime; # external watchdog should not bark
		2424
		2425	warn "syncing database to disk";
		2426	BDB::db_env_txn_checkpoint $DB_ENV;
		2427
		2428	# if anything goes wrong in here, we should simply crash as we already saved
		2429
		2430	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2431	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2432	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2433	}
1182		2434
1183	# unload all extensions	2435	warn "flushing outstanding aio requests";
1184	for (@exts) {	2436	for (;;) {
1185	$msg->("unloading <$_>");	2437	BDB::flush;
1186	unload_extension $_;	2438	IO::AIO::flush;
		2439	Coro::cede;
		2440	last unless IO::AIO::nreqs || BDB::nreqs;
		2441	warn "iterate...";
		2442	}
		2443
		2444	++$RELOAD;
		2445
		2446	warn "cancelling all extension coros";
		2447	$_->cancel for values %EXT_CORO;
		2448	%EXT_CORO = ();
		2449
		2450	warn "removing commands";
		2451	%COMMAND = ();
		2452
		2453	warn "removing ext commands";
		2454	%EXTCMD = ();
		2455
		2456	warn "unloading/nuking all extensions";
		2457	for my $pkg (@EXTS) {
		2458	warn "... unloading $pkg";
		2459
		2460	if (my $cb = $pkg->can ("unload")) {
		2461	eval {
		2462	$cb->($pkg);
		2463	1
		2464	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2465	}
1188		2466
		2467	warn "... nuking $pkg";
		2468	Symbol::delete_package $pkg;
		2469	}
		2470
1189	# unload all modules loaded from $LIBDIR	2471	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2472	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2473	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2474
1193	$msg->("removing <$k>");	2475	warn "... unloading $k";
1194	delete $INC{$k};	2476	delete $INC{$k};
1195		2477
1196	$k =~ s/\.pm$//;	2478	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2479	$k =~ s/\//::/g;
1198		2480
…		…
1201	}	2483	}
1202		2484
1203	Symbol::delete_package $k;	2485	Symbol::delete_package $k;
1204	}	2486	}
1205		2487
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2488	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2489	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2490	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2491
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2492	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2493	delete $INC{"cf.pm"};
1218		2494
1219	# don't, removes xs symbols, too,	2495	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2496	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2497	#Symbol::delete_package __PACKAGE__;
1222		2498
1223	# reload cf.pm	2499	warn "unload completed, starting to reload now";
		2500
1224	$msg->("reloading cf.pm");	2501	warn "reloading cf.pm";
1225	require cf;	2502	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2503	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2504
1228
1229	# load config and database again	2505	warn "loading config and database again";
1230	cf::cfg_load;	2506	cf::cfg_load;
1231	cf::db_load;
1232		2507
1233	# load extensions	2508	warn "loading extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2509	cf::load_extensions;
1236		2510
1237	# reattach attachments to objects	2511	warn "reattaching attachments to objects/players";
1238	$msg->("reattach");	2512	_global_reattach; # objects, sockets
1239	_global_reattach;	2513	warn "reattaching attachments to maps";
		2514	reattach $_ for values %MAP;
		2515	warn "reattaching attachments to players";
		2516	reattach $_ for values %PLAYER;
		2517
		2518	warn "loading reloadable resources";
		2519	reload_resources;
		2520
		2521	warn "leaving sync_job";
		2522
		2523	1
		2524	} or do {
		2525	warn $@;
		2526	warn "error while reloading, exiting.";
		2527	exit 1;
1240	};	2528	};
1241	$msg->($@) if $@;
1242		2529
1243	$msg->("reloaded");	2530	warn "reloaded";
1244	};	2531	};
1245		2532
1246	sub perl_reload() {	2533	our $RELOAD_WATCHER; # used only during reload
1247	_perl_reload {
1248	warn $_[0];
1249	print "$_[0]\n";
1250	};
1251	}
1252		2534
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	2535	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	2536	my ($who, $arg) = @_;
1257		2537
1258	if ($who->flag (FLAG_WIZ)) {	2538	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	2539	$who->message ("reloading server.");
1260	warn $_[0];	2540
1261	$who->message ($_[0]);	2541	# doing reload synchronously and two reloads happen back-to-back,
		2542	# coro crashes during coro_state_free->destroy here.
		2543
		2544	$RELOAD_WATCHER ||= Event->timer (
		2545	reentrant => 0,
		2546	after => 0,
		2547	data => WF_AUTOCANCEL,
		2548	cb => sub {
		2549	reload;
		2550	undef $RELOAD_WATCHER;
		2551	},
1262	};	2552	);
1263	}	2553	}
1264	};	2554	};
1265		2555
1266	unshift @INC, $LIBDIR;	2556	unshift @INC, $LIBDIR;
1267		2557
		2558	my $bug_warning = 0;
		2559
1268	$TICK_WATCHER = Event->timer (	2560	$TICK_WATCHER = Event->timer (
		2561	reentrant => 0,
		2562	parked => 1,
1269	prio => 0,	2563	prio => 0,
1270	at => $NEXT_TICK || 1,	2564	at => $NEXT_TICK || $TICK,
1271	data => WF_AUTOCANCEL,	2565	data => WF_AUTOCANCEL,
1272	cb => sub {	2566	cb => sub {
		2567	if ($Coro::current != $Coro::main) {
		2568	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2569	unless ++$bug_warning > 10;
		2570	return;
		2571	}
		2572
		2573	$NOW = Event::time;
		2574
1273	cf::server_tick; # one server iteration	2575	cf::server_tick; # one server iteration
1274		2576	$RUNTIME += $TICK;
1275	my $NOW = Event::time;
1276	$NEXT_TICK += $TICK;	2577	$NEXT_TICK += $TICK;
1277		2578
		2579	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2580	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2581	Coro::async_pool {
		2582	write_runtime
		2583	or warn "ERROR: unable to write runtime file: $!";
		2584	};
		2585	}
		2586
		2587	$WAIT_FOR_TICK->broadcast;
		2588	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2589
		2590	# my $AFTER = Event::time;
		2591	# warn $AFTER - $NOW;#d#
		2592
1278	# if we are delayed by four ticks or more, skip them all	2593	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2594	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1280		2595
1281	$TICK_WATCHER->at ($NEXT_TICK);	2596	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	2597	$TICK_WATCHER->start;
1283	},	2598	},
1284	);	2599	);
1285		2600
		2601	{
		2602	BDB::max_poll_time $TICK * 0.1;
		2603	$BDB_POLL_WATCHER = Event->io (
		2604	reentrant => 0,
		2605	fd => BDB::poll_fileno,
		2606	poll => 'r',
		2607	prio => 0,
		2608	data => WF_AUTOCANCEL,
		2609	cb => \&BDB::poll_cb,
		2610	);
		2611	BDB::min_parallel 8;
		2612
		2613	BDB::set_sync_prepare {
		2614	my $status;
		2615	my $current = $Coro::current;
		2616	(
		2617	sub {
		2618	$status = $!;
		2619	$current->ready; undef $current;
		2620	},
		2621	sub {
		2622	Coro::schedule while defined $current;
		2623	$! = $status;
		2624	},
		2625	)
		2626	};
		2627
		2628	unless ($DB_ENV) {
		2629	$DB_ENV = BDB::db_env_create;
		2630
		2631	cf::sync_job {
		2632	eval {
		2633	BDB::db_env_open
		2634	$DB_ENV,
		2635	$BDB_ENV_DIR,
		2636	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2637	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2638	0666;
		2639
		2640	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2641
		2642	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2643	$DB_ENV->set_lk_detect;
		2644	};
		2645
		2646	cf::cleanup "db_env_open(db): $@" if $@;
		2647	};
		2648	}
		2649	}
		2650
		2651	{
		2652	IO::AIO::min_parallel 8;
		2653
		2654	undef $Coro::AIO::WATCHER;
1286	IO::AIO::max_poll_time $TICK * 0.2;	2655	IO::AIO::max_poll_time $TICK * 0.1;
1287		2656	$AIO_POLL_WATCHER = Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	2657	reentrant => 0,
1289	poll => 'r',
1290	prio => 5,
1291	data => WF_AUTOCANCEL,	2658	data => WF_AUTOCANCEL,
		2659	fd => IO::AIO::poll_fileno,
		2660	poll => 'r',
		2661	prio => 6,
1292	cb => \&IO::AIO::poll_cb);	2662	cb => \&IO::AIO::poll_cb,
		2663	);
		2664	}
		2665
		2666	END { cf::emergency_save }
1293		2667
1294	1	2668	1
1295		2669

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