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/cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.206 by root, Sun Feb 11 22:27:05 2007 UTC vs.
Revision 1.267 by root, Sat May 19 00:08:11 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 3.5 ();	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;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
19		24
20	use BDB ();	25	use BDB ();
21	use Data::Dumper;	26	use Data::Dumper;
22	use Digest::MD5;	27	use Digest::MD5;
23	use Fcntl;	28	use Fcntl;
		29	use YAML::Syck ();
24	use IO::AIO 2.32 ();	30	use IO::AIO 2.32 ();
25	use YAML::Syck ();
26	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
27		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
28	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
29
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		41
32	# 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?
33	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
34		44
35	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
36		48
37	our %COMMAND = ();	49	our %COMMAND = ();
38	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
39		51
40	our @EXTS = (); # list of extension package names	52	our @EXTS = (); # list of extension package names
41	our %EXTCMD = ();	53	our %EXTCMD = ();
42	our %EXT_CORO = (); # coroutines bound to extensions	54	our %EXT_CORO = (); # coroutines bound to extensions
43	our %EXT_MAP = (); # pluggable maps	55	our %EXT_MAP = (); # pluggable maps
44		56
		57	our $RELOAD; # number of reloads so far
45	our @EVENT;	58	our @EVENT;
46	our $LIBDIR = datadir . "/ext";
47		59
48	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
49	our $TICK_WATCHER;	73	our $TICK_WATCHER;
50	our $AIO_POLL_WATCHER;	74	our $AIO_POLL_WATCHER;
51	our $WRITE_RUNTIME_WATCHER;	75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
52	our $NEXT_TICK;	76	our $NEXT_TICK;
53	our $NOW;	77	our $NOW;
54	our $USE_FSYNC = 1; # use fsync to write maps - default off	78	our $USE_FSYNC = 1; # use fsync to write maps - default off
55		79
56	our $BDB_POLL_WATCHER;	80	our $BDB_POLL_WATCHER;
…		…
62	our $RUNTIME;	86	our $RUNTIME;
63		87
64	our %PLAYER; # all users	88	our %PLAYER; # all users
65	our %MAP; # all maps	89	our %MAP; # all maps
66	our $LINK_MAP; # the special {link} map, which is always available	90	our $LINK_MAP; # the special {link} map, which is always available
67	our $RANDOM_MAPS = cf::localdir . "/random";
68	our $BDB_ENV_DIR = cf::localdir . "/db";
69
70	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
71	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
72		91
73	# used to convert map paths into valid unix filenames by replacing / by ∕	92	# used to convert map paths into valid unix filenames by replacing / by ∕
74	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
75		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
76	binmode STDOUT;	99	binmode STDOUT;
77	binmode STDERR;	100	binmode STDERR;
78		101
79	# read virtual server time, if available	102	# read virtual server time, if available
80	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
81	open my $fh, "<", cf::localdir . "/runtime"	104	open my $fh, "<", "$LOCALDIR/runtime"
82	or die "unable to read runtime file: $!";	105	or die "unable to read runtime file: $!";
83	$RUNTIME = <$fh> + 0.;	106	$RUNTIME = <$fh> + 0.;
84	}	107	}
85		108
86	mkdir cf::localdir;	109	mkdir $_
87	mkdir cf::localdir . "/" . cf::playerdir;	110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
88	mkdir cf::localdir . "/" . cf::tmpdir;
89	mkdir cf::localdir . "/" . cf::uniquedir;
90	mkdir $RANDOM_MAPS;
91	mkdir $BDB_ENV_DIR;
92		111
93	our $EMERGENCY_POSITION;	112	our $EMERGENCY_POSITION;
94		113
95	sub cf::map::normalise;	114	sub cf::map::normalise;
96		115
…		…
107	=item $cf::RUNTIME	126	=item $cf::RUNTIME
108		127
109	The time this server has run, starts at 0 and is increased by $cf::TICK on	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
110	every server tick.	129	every server tick.
111		130
112	=item $cf::LIBDIR	131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
113		134
114	The perl library directory, where extensions and cf-specific modules can	135	Various directories - "/etc", read-only install directory, perl-library
115	be found. It will be added to C<@INC> automatically.	136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
116		139
117	=item $cf::NOW	140	=item $cf::NOW
118		141
119	The time of the last (current) server tick.	142	The time of the last (current) server tick.
120		143
121	=item $cf::TICK	144	=item $cf::TICK
122		145
123	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
124		157
125	=item %cf::CFG	158	=item %cf::CFG
126		159
127	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
128	from wherever your confdir points to.	161	from wherever your confdir points to.
129		162
130	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE	163	=item cf::wait_for_tick, cf::wait_for_tick_begin
131		164
132	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)	165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
133	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick	166	returns directly I<after> the tick processing (and consequently, can only wake one process
134	processing has been done. Call C<< ->wait >> on them to maximise the	167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
135	window of cpu time available, or simply to synchronise to the server tick.
136		168
137	=back	169	=back
138		170
139	=cut	171	=cut
140		172
141	BEGIN {	173	BEGIN {
142	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
143	my $msg = join "", @_;	175	my $msg = join "", @_;
144	utf8::encode $msg;
145		176
146	$msg .= "\n"	177	$msg .= "\n"
147	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
148		179
		180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
149	LOG llevError, $msg;	183	LOG llevError, $msg;
150	};	184	};
151	}	185	}
152		186
153	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
…		…
199	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
200	$d	234	$d
201	} || "[unable to dump $_[0]: '$@']";	235	} || "[unable to dump $_[0]: '$@']";
202	}	236	}
203		237
204	use JSON::Syck (); # TODO# replace by JSON::PC once working	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
205		239
206	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
207		241
208	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
209		243
210	=cut
211
212	sub from_json($) {
213	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
214	JSON::Syck::Load $_[0]
215	}
216
217	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
218		245
219	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
220
221	=cut
222
223	sub to_json($) {
224	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
225	JSON::Syck::Dump $_[0]
226	}
227		247
228	=item cf::lock_wait $string	248	=item cf::lock_wait $string
229		249
230	Wait until the given lock is available. See cf::lock_acquire.	250	Wait until the given lock is available. See cf::lock_acquire.
231		251
…		…
237	returned.	257	returned.
238		258
239	Lock names should begin with a unique identifier (for example, cf::map::find	259	Lock names should begin with a unique identifier (for example, cf::map::find
240	uses map_find and cf::map::load uses map_load).	260	uses map_find and cf::map::load uses map_load).
241		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
242	=cut	266	=cut
243		267
244	our %LOCK;	268	our %LOCK;
245		269
246	sub lock_wait($) {	270	sub lock_wait($) {
…		…
265	# wake up all waiters, to be on the safe side	289	# wake up all waiters, to be on the safe side
266	$_->ready for @{ delete $LOCK{$key} };	290	$_->ready for @{ delete $LOCK{$key} };
267	}	291	}
268	}	292	}
269		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
270	sub freeze_mainloop {	300	sub freeze_mainloop {
271	return unless $TICK_WATCHER->is_active;	301	return unless $TICK_WATCHER->is_active;
272		302
273	my $guard = Coro::guard {	303	my $guard = Coro::guard {
274	$TICK_WATCHER->start;	304	$TICK_WATCHER->start;
275	$WRITE_RUNTIME_WATCHER->start;
276	};	305	};
277	$WRITE_RUNTIME_WATCHER->stop;
278	$TICK_WATCHER->stop;	306	$TICK_WATCHER->stop;
279	$guard	307	$guard
280	}	308	}
281		309
282	=item cf::async { BLOCK }	310	=item cf::async { BLOCK }
…		…
304		332
305	sub sync_job(&) {	333	sub sync_job(&) {
306	my ($job) = @_;	334	my ($job) = @_;
307		335
308	if ($Coro::current == $Coro::main) {	336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
309	# this is the main coro, too bad, we have to block	339	# this is the main coro, too bad, we have to block
310	# till the operation succeeds, freezing the server :/	340	# till the operation succeeds, freezing the server :/
311		341
312	# TODO: use suspend/resume instead	342	# TODO: use suspend/resume instead
313	# (but this is cancel-safe)	343	# (but this is cancel-safe)
…		…
324		354
325	while ($busy) {	355	while ($busy) {
326	Coro::cede or Event::one_event;	356	Coro::cede or Event::one_event;
327	}	357	}
328		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
329	wantarray ? @res : $res[0]	366	wantarray ? @res : $res[0]
330	} else {	367	} else {
331	# we are in another coroutine, how wonderful, everything just works	368	# we are in another coroutine, how wonderful, everything just works
332		369
333	$job->()	370	$job->()
…		…
353		390
354	$coro	391	$coro
355	}	392	}
356		393
357	sub write_runtime {	394	sub write_runtime {
358	my $runtime = cf::localdir . "/runtime";	395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		401	utime undef, undef, $fh;
		402	}
		403
		404	my $guard = cf::lock_acquire "write_runtime";
359		405
360	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	406	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
361	or return;	407	or return;
362		408
363	my $value = $cf::RUNTIME + 90 + 10;	409	my $value = $cf::RUNTIME + 90 + 10;
…		…
369		415
370	# always fsync - this file is important	416	# always fsync - this file is important
371	aio_fsync $fh	417	aio_fsync $fh
372	and return;	418	and return;
373		419
		420	# touch it again to show we are up-to-date
		421	utime undef, undef, $fh;
		422
374	close $fh	423	close $fh
375	or return;	424	or return;
376		425
377	aio_rename "$runtime~", $runtime	426	aio_rename "$runtime~", $runtime
378	and return;	427	and return;
379		428
		429	warn "runtime file written.\n";#d#
		430
380	1	431	1
		432	}
		433
		434	=item cf::datalog type => key => value, ...
		435
		436	Log a datalog packet of the given type with the given key-value pairs.
		437
		438	=cut
		439
		440	sub datalog($@) {
		441	my ($type, %kv) = @_;
		442	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
381	}	443	}
382		444
383	=back	445	=back
384		446
385	=cut	447	=cut
…		…
565	$registry = $CB_TYPE[$object_type] ||= [];	627	$registry = $CB_TYPE[$object_type] ||= [];
566		628
567	} elsif ($type eq "subtype") {	629	} elsif ($type eq "subtype") {
568	defined $object_type or Carp::croak "subtype specified without type";	630	defined $object_type or Carp::croak "subtype specified without type";
569	my $object_subtype = shift @arg;	631	my $object_subtype = shift @arg;
570	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
571		633
572	} elsif ($type eq "package") {	634	} elsif ($type eq "package") {
573	my $pkg = shift @arg;	635	my $pkg = shift @arg;
574		636
575	while (my ($name, $id) = each %cb_id) {	637	while (my ($name, $id) = each %cb_id) {
…		…
616	if (ref $_[0]) {	678	if (ref $_[0]) {
617	_object_attach @_;	679	_object_attach @_;
618	} else {	680	} else {
619	_attach shift->_attach_registry, @_;	681	_attach shift->_attach_registry, @_;
620	}	682	}
		683	_recalc_want;
621	};	684	};
622		685
623	# all those should be optimised	686	# all those should be optimised
624	sub cf::attachable::detach {	687	sub cf::attachable::detach {
625	my ($obj, $name) = @_;	688	my ($obj, $name) = @_;
…		…
628	delete $obj->{_attachment}{$name};	691	delete $obj->{_attachment}{$name};
629	reattach ($obj);	692	reattach ($obj);
630	} else {	693	} else {
631	Carp::croak "cannot, currently, detach class attachments";	694	Carp::croak "cannot, currently, detach class attachments";
632	}	695	}
		696	_recalc_want;
633	};	697	};
634		698
635	sub cf::attachable::attached {	699	sub cf::attachable::attached {
636	my ($obj, $name) = @_;	700	my ($obj, $name) = @_;
637		701
…		…
784	}	848	}
785	} else {	849	} else {
786	aio_unlink $filename;	850	aio_unlink $filename;
787	aio_unlink "$filename.pst";	851	aio_unlink "$filename.pst";
788	}	852	}
789
790	#d##TODO# nuke non .map-files if exist
791	if ($filename =~ s/\.map$//) {
792	aio_unlink $filename;
793	aio_unlink "$filename.pst";
794	}
795	}	853	}
796	}	854	}
797		855
798	sub object_freezer_as_string {	856	sub object_freezer_as_string {
799	my ($rdata, $objs) = @_;	857	my ($rdata, $objs) = @_;
…		…
805		863
806	sub object_thawer_load {	864	sub object_thawer_load {
807	my ($filename) = @_;	865	my ($filename) = @_;
808		866
809	my ($data, $av);	867	my ($data, $av);
810
811	#d#TODO remove .map if file does not exist
812	aio_stat $filename and $filename =~ s/\.map$//;
813		868
814	(aio_load $filename, $data) >= 0	869	(aio_load $filename, $data) >= 0
815	or return;	870	or return;
816		871
817	unless (aio_stat "$filename.pst") {	872	unless (aio_stat "$filename.pst") {
…		…
956	Returns the given player object, loading it if necessary (might block).	1011	Returns the given player object, loading it if necessary (might block).
957		1012
958	=cut	1013	=cut
959		1014
960	sub playerdir($) {	1015	sub playerdir($) {
961	cf::localdir	1016	"$PLAYERDIR/"
962	. "/"
963	. cf::playerdir
964	. "/"
965	. (ref $_[0] ? $_[0]->ob->name : $_[0])	1017	. (ref $_[0] ? $_[0]->ob->name : $_[0])
966	}	1018	}
967		1019
968	sub path($) {	1020	sub path($) {
969	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];	1021	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
970		1022
971	(playerdir $login) . "/$login.pl"	1023	(playerdir $login) . "/playerdata"
972	}	1024	}
973		1025
974	sub find_active($) {	1026	sub find_active($) {
975	$cf::PLAYER{$_[0]}	1027	$cf::PLAYER{$_[0]}
976	and $cf::PLAYER{$_[0]}->active	1028	and $cf::PLAYER{$_[0]}->active
…		…
989	my $login = $_[0];	1041	my $login = $_[0];
990		1042
991	my $guard = cf::lock_acquire "user_find:$login";	1043	my $guard = cf::lock_acquire "user_find:$login";
992		1044
993	$cf::PLAYER{$_[0]} || do {	1045	$cf::PLAYER{$_[0]} || do {
		1046	# rename old playerfiles to new ones
		1047	#TODO: remove when no longer required
		1048	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1049	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1050	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1051	aio_unlink +(playerdir $login) . "/$login.pl";
		1052
994	my $pl = load_pl path $login	1053	my $pl = load_pl path $login
995	or return;	1054	or return;
996	$cf::PLAYER{$login} = $pl	1055	$cf::PLAYER{$login} = $pl
997	}	1056	}
998	}	1057	}
…		…
1035		1094
1036	=cut	1095	=cut
1037		1096
1038	sub quit_character {	1097	sub quit_character {
1039	my ($pl) = @_;	1098	my ($pl) = @_;
		1099
		1100	my $name = $pl->ob->name;
1040		1101
1041	$pl->{deny_save} = 1;	1102	$pl->{deny_save} = 1;
1042	$pl->password ("*"); # this should lock out the player until we nuked the dir	1103	$pl->password ("*"); # this should lock out the player until we nuked the dir
1043		1104
1044	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;	1105	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
…		…
1049	my $path = playerdir $pl;	1110	my $path = playerdir $pl;
1050	my $temp = "$path~$cf::RUNTIME~deleting~";	1111	my $temp = "$path~$cf::RUNTIME~deleting~";
1051	aio_rename $path, $temp;	1112	aio_rename $path, $temp;
1052	delete $cf::PLAYER{$pl->ob->name};	1113	delete $cf::PLAYER{$pl->ob->name};
1053	$pl->destroy;	1114	$pl->destroy;
		1115
		1116	my $prefix = qr<^~\Q$name\E/>;
		1117
		1118	# nuke player maps
		1119	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1120
1054	IO::AIO::aio_rmtree $temp;	1121	IO::AIO::aio_rmtree $temp;
		1122	}
		1123
		1124	=item $pl->kick
		1125
		1126	Kicks a player out of the game. This destroys the connection.
		1127
		1128	=cut
		1129
		1130	sub kick {
		1131	my ($pl, $kicker) = @_;
		1132
		1133	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1134	$pl->killer ("kicked");
		1135	$pl->ns->destroy;
1055	}	1136	}
1056		1137
1057	=item cf::player::list_logins	1138	=item cf::player::list_logins
1058		1139
1059	Returns am arrayref of all valid playernames in the system, can take a	1140	Returns am arrayref of all valid playernames in the system, can take a
1060	while and may block, so not sync_job-capable, ever.	1141	while and may block, so not sync_job-capable, ever.
1061		1142
1062	=cut	1143	=cut
1063		1144
1064	sub list_logins {	1145	sub list_logins {
1065	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir	1146	my $dirs = aio_readdir $PLAYERDIR
1066	or return [];	1147	or return [];
1067		1148
1068	my @logins;	1149	my @logins;
1069		1150
1070	for my $login (@$dirs) {	1151	for my $login (@$dirs) {
…		…
1105	}	1186	}
1106		1187
1107	\@paths	1188	\@paths
1108	}	1189	}
1109		1190
1110	=item $player->ext_reply ($msgid, $msgtype, %msg)	1191	=item $player->ext_reply ($msgid, %msg)
1111		1192
1112	Sends an ext reply to the player.	1193	Sends an ext reply to the player.
1113		1194
1114	=cut	1195	=cut
1115		1196
1116	sub ext_reply($$$%) {	1197	sub ext_reply($$%) {
1117	my ($self, $id, %msg) = @_;	1198	my ($self, $id, %msg) = @_;
1118		1199
1119	$msg{msgid} = $id;	1200	$msg{msgid} = $id;
1120		1201
1121	$self->send ("ext " . cf::to_json \%msg);	1202	$self->send ("ext " . cf::to_json \%msg);
1122	}	1203	}
1123		1204
1124	package cf;	1205	=item $player->ext_event ($type, %msg)
		1206
		1207	Sends an ext event to the client.
		1208
		1209	=cut
		1210
		1211	sub ext_event($$%) {
		1212	my ($self, $type, %msg) = @_;
		1213
		1214	$self->ns->ext_event ($type, %msg);
		1215	}
		1216
		1217	=head3 cf::region
		1218
		1219	=over 4
		1220
		1221	=cut
		1222
		1223	package cf::region;
		1224
		1225	=item cf::region::find_by_path $path
		1226
		1227	Tries to decuce the probable region for a map knowing only its path.
		1228
		1229	=cut
		1230
		1231	sub find_by_path($) {
		1232	my ($path) = @_;
		1233
		1234	my ($match, $specificity);
		1235
		1236	for my $region (list) {
		1237	if ($region->match && $path =~ $region->match) {
		1238	($match, $specificity) = ($region, $region->specificity)
		1239	if $region->specificity > $specificity;
		1240	}
		1241	}
		1242
		1243	$match
		1244	}
1125		1245
1126	=back	1246	=back
1127
1128		1247
1129	=head3 cf::map	1248	=head3 cf::map
1130		1249
1131	=over 4	1250	=over 4
1132		1251
…		…
1270		1389
1271	# the original (read-only) location	1390	# the original (read-only) location
1272	sub load_path {	1391	sub load_path {
1273	my ($self) = @_;	1392	my ($self) = @_;
1274		1393
1275	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}	1394	"$MAPDIR/$self->{path}.map"
1276	}	1395	}
1277		1396
1278	# the temporary/swap location	1397	# the temporary/swap location
1279	sub save_path {	1398	sub save_path {
1280	my ($self) = @_;	1399	my ($self) = @_;
1281		1400
1282	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1401	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1283	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path	1402	"$TMPDIR/$path.map"
1284	}	1403	}
1285		1404
1286	# the unique path, undef == no special unique path	1405	# the unique path, undef == no special unique path
1287	sub uniq_path {	1406	sub uniq_path {
1288	my ($self) = @_;	1407	my ($self) = @_;
1289		1408
1290	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1409	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1291	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path	1410	"$UNIQUEDIR/$path"
1292	}	1411	}
1293		1412
1294	# and all this just because we cannot iterate over	1413	# and all this just because we cannot iterate over
1295	# all maps in C++...	1414	# all maps in C++...
1296	sub change_all_map_light {	1415	sub change_all_map_light {
…		…
1304	my ($self) = @_;	1423	my ($self) = @_;
1305		1424
1306	utf8::encode (my $save = $self->save_path);	1425	utf8::encode (my $save = $self->save_path);
1307	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1308	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";	1427	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1309
1310	#d#TODO remove .map and also nuke
1311	$save =~ s/\.map// or return;#d#
1312	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
1313	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
1314	}	1428	}
1315		1429
1316	sub load_header_from($) {	1430	sub load_header_from($) {
1317	my ($self, $path) = @_;	1431	my ($self, $path) = @_;
1318		1432
…		…
1368	$self->load_header_orig	1482	$self->load_header_orig
1369	or return;	1483	or return;
1370	$self->prepare_orig;	1484	$self->prepare_orig;
1371	}	1485	}
1372		1486
		1487	$self->default_region (cf::region::find_by_path $self->{path})
		1488	unless $self->default_region;
		1489
1373	1	1490	1
1374	}	1491	}
1375		1492
1376	sub find;	1493	sub find;
1377	sub find {	1494	sub find {
…		…
1410	my ($self) = @_;	1527	my ($self) = @_;
1411		1528
1412	local $self->{deny_reset} = 1; # loading can take a long time	1529	local $self->{deny_reset} = 1; # loading can take a long time
1413		1530
1414	my $path = $self->{path};	1531	my $path = $self->{path};
		1532
		1533	{
1415	my $guard = cf::lock_acquire "map_load:$path";	1534	my $guard = cf::lock_acquire "map_load:$path";
1416		1535
1417	return if $self->in_memory != cf::MAP_SWAPPED;	1536	return if $self->in_memory != cf::MAP_SWAPPED;
1418		1537
1419	$self->in_memory (cf::MAP_LOADING);	1538	$self->in_memory (cf::MAP_LOADING);
1420		1539
1421	$self->alloc;	1540	$self->alloc;
1422		1541
1423	$self->pre_load;	1542	$self->pre_load;
1424
1425	$self->_load_objects ($self->{load_path}, 1)
1426	or return;
1427
1428	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1429	if delete $self->{load_original};
1430
1431	if (my $uniq = $self->uniq_path) {
1432	utf8::encode $uniq;
1433	if (aio_open $uniq, O_RDONLY, 0) {
1434	$self->clear_unique_items;
1435	$self->_load_objects ($uniq, 0);
1436	}
1437	}
1438
1439	Coro::cede;
1440
1441	# now do the right thing for maps
1442	$self->link_multipart_objects;
1443
1444	unless ($self->{deny_activate}) {
1445	$self->decay_objects;
1446	$self->fix_auto_apply;
1447	$self->update_buttons;
1448	Coro::cede;	1543	Coro::cede;
1449	$self->set_darkness_map;	1544
		1545	$self->_load_objects ($self->{load_path}, 1)
		1546	or return;
		1547
		1548	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1549	if delete $self->{load_original};
		1550
		1551	if (my $uniq = $self->uniq_path) {
		1552	utf8::encode $uniq;
		1553	if (aio_open $uniq, O_RDONLY, 0) {
		1554	$self->clear_unique_items;
		1555	$self->_load_objects ($uniq, 0);
		1556	}
		1557	}
		1558
		1559	Coro::cede;
		1560	# now do the right thing for maps
		1561	$self->link_multipart_objects;
1450	$self->difficulty ($self->estimate_difficulty)	1562	$self->difficulty ($self->estimate_difficulty)
1451	unless $self->difficulty;	1563	unless $self->difficulty;
1452	Coro::cede;	1564	Coro::cede;
		1565
		1566	unless ($self->{deny_activate}) {
		1567	$self->decay_objects;
		1568	$self->fix_auto_apply;
		1569	$self->update_buttons;
		1570	Coro::cede;
		1571	$self->set_darkness_map;
		1572	Coro::cede;
1453	$self->activate;	1573	$self->activate;
		1574	}
		1575
		1576	$self->in_memory (cf::MAP_IN_MEMORY);
1454	}	1577	}
1455		1578
1456	$self->post_load;	1579	$self->post_load;
1457
1458	$self->in_memory (cf::MAP_IN_MEMORY);
1459	}	1580	}
1460		1581
1461	sub customise_for {	1582	sub customise_for {
1462	my ($self, $ob) = @_;	1583	my ($self, $ob) = @_;
1463		1584
…		…
1606	return if $self->players;	1727	return if $self->players;
1607	return if $self->isa ("ext::map_per_player");#d#	1728	return if $self->isa ("ext::map_per_player");#d#
1608		1729
1609	warn "resetting map ", $self->path;#d#	1730	warn "resetting map ", $self->path;#d#
1610		1731
		1732	$self->in_memory (cf::MAP_SWAPPED);
		1733
		1734	# need to save uniques path
		1735	unless ($self->{deny_save}) {
		1736	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1737
		1738	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1739	if $uniq;
		1740	}
		1741
1611	delete $cf::MAP{$self->path};	1742	delete $cf::MAP{$self->path};
1612		1743
1613	$self->in_memory (cf::MAP_SWAPPED);
1614	$self->clear;	1744	$self->clear;
1615		1745
1616	$_->clear_links_to ($self) for values %cf::MAP;	1746	$_->clear_links_to ($self) for values %cf::MAP;
1617		1747
1618	$self->unlink_save;	1748	$self->unlink_save;
…		…
1645	instantiated unique items. May block.	1775	instantiated unique items. May block.
1646		1776
1647	=cut	1777	=cut
1648		1778
1649	sub unique_maps() {	1779	sub unique_maps() {
1650	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir	1780	my $files = aio_readdir $UNIQUEDIR
1651	or return;	1781	or return;
1652		1782
1653	my @paths;	1783	my @paths;
1654		1784
1655	for (@$files) {	1785	for (@$files) {
…		…
1808	$map->load;	1938	$map->load;
1809	$map->load_diag;	1939	$map->load_diag;
1810		1940
1811	return unless $self->contr->active;	1941	return unless $self->contr->active;
1812	$self->activate_recursive;	1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1813	$self->enter_map ($map, $x, $y);	1945	$self->enter_map ($map, $x, $y);
1814	}	1946	}
1815		1947
1816	cf::player->attach (	1948	cf::player->attach (
1817	on_logout => sub {	1949	on_logout => sub {
…		…
1830	# try to abort aborted map switching on player login :)	1962	# try to abort aborted map switching on player login :)
1831	# should happen only on crashes	1963	# should happen only on crashes
1832	if ($pl->ob->{_link_pos}) {	1964	if ($pl->ob->{_link_pos}) {
1833	$pl->ob->enter_link;	1965	$pl->ob->enter_link;
1834	(async {	1966	(async {
1835	# we need this sleep as the login has a concurrent enter_exit running
1836	# and this sleep increases chances of the player not ending up in scorn
1837	$pl->ob->reply (undef,	1967	$pl->ob->reply (undef,
1838	"There was an internal problem at your last logout, "	1968	"There was an internal problem at your last logout, "
1839	. "the server will try to bring you to your intended destination in a second.",	1969	. "the server will try to bring you to your intended destination in a second.",
1840	cf::NDI_RED);	1970	cf::NDI_RED);
		1971	# we need this sleep as the login has a concurrent enter_exit running
		1972	# and this sleep increases chances of the player not ending up in scorn
1841	Coro::Timer::sleep 1;	1973	Coro::Timer::sleep 1;
1842	$pl->ob->leave_link;	1974	$pl->ob->leave_link;
1843	})->prio (2);	1975	})->prio (2);
1844	}	1976	}
1845	},	1977	},
…		…
1909		2041
1910	$rmp->{random_seed} ||= $exit->random_seed;	2042	$rmp->{random_seed} ||= $exit->random_seed;
1911		2043
1912	my $data = cf::to_json $rmp;	2044	my $data = cf::to_json $rmp;
1913	my $md5 = Digest::MD5::md5_hex $data;	2045	my $md5 = Digest::MD5::md5_hex $data;
1914	my $meta = "$cf::RANDOM_MAPS/$md5.meta";	2046	my $meta = "$RANDOMDIR/$md5.meta";
1915		2047
1916	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {	2048	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1917	aio_write $fh, 0, (length $data), $data, 0;	2049	aio_write $fh, 0, (length $data), $data, 0;
1918	undef $fh;	2050	undef $fh;
1919	aio_rename "$meta~", $meta;	2051	aio_rename "$meta~", $meta;
…		…
1928		2060
1929	return unless $self->type == cf::PLAYER;	2061	return unless $self->type == cf::PLAYER;
1930		2062
1931	if ($exit->slaying eq "/!") {	2063	if ($exit->slaying eq "/!") {
1932	#TODO: this should de-fi-ni-te-ly not be a sync-job	2064	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2065	# the problem is that $exit might not survive long enough
		2066	# so it needs to be done right now, right here
1933	cf::sync_job { prepare_random_map $exit };	2067	cf::sync_job { prepare_random_map $exit };
1934	}	2068	}
1935		2069
1936	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;	2070	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
1937	my $hp = $exit->stats->hp;	2071	my $hp = $exit->stats->hp;
…		…
1945	$self->goto ($slaying, $hp, $sp);	2079	$self->goto ($slaying, $hp, $sp);
1946		2080
1947	1;	2081	1;
1948	}) {	2082	}) {
1949	$self->message ("Something went wrong deep within the crossfire server. "	2083	$self->message ("Something went wrong deep within the crossfire server. "
1950	. "I'll try to bring you back to the map you were before. "	2084	. "I'll try to bring you back to the map you were before. "
1951	. "Please report this to the dungeon master!",	2085	. "Please report this to the dungeon master!",
1952	cf::NDI_UNIQUE | cf::NDI_RED);	2086	cf::NDI_UNIQUE | cf::NDI_RED);
1953		2087
1954	warn "ERROR in enter_exit: $@";	2088	warn "ERROR in enter_exit: $@";
1955	$self->leave_link;	2089	$self->leave_link;
1956	}	2090	}
1957	})->prio (1);	2091	})->prio (1);
…		…
1970		2104
1971	sub cf::client::send_drawinfo {	2105	sub cf::client::send_drawinfo {
1972	my ($self, $text, $flags) = @_;	2106	my ($self, $text, $flags) = @_;
1973		2107
1974	utf8::encode $text;	2108	utf8::encode $text;
1975	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2109	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1976	}	2110	}
1977		2111
		2112	=item $client->ext_event ($type, %msg)
		2113
		2114	Sends an exti event to the client.
		2115
		2116	=cut
		2117
		2118	sub cf::client::ext_event($$%) {
		2119	my ($self, $type, %msg) = @_;
		2120
		2121	$msg{msgtype} = "event_$type";
		2122	$self->send_packet ("ext " . cf::to_json \%msg);
		2123	}
1978		2124
1979	=item $success = $client->query ($flags, "text", \&cb)	2125	=item $success = $client->query ($flags, "text", \&cb)
1980		2126
1981	Queues a query to the client, calling the given callback with	2127	Queues a query to the client, calling the given callback with
1982	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2128	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
2079		2225
2080	# here we export the classes and methods available to script code	2226	# here we export the classes and methods available to script code
2081		2227
2082	=pod	2228	=pod
2083		2229
2084	The following fucntions and emthods are available within a safe environment:	2230	The following functions and methods are available within a safe environment:
2085		2231
2086	cf::object contr pay_amount pay_player map	2232	cf::object contr pay_amount pay_player map
2087	cf::object::player player	2233	cf::object::player player
2088	cf::player peaceful	2234	cf::player peaceful
2089	cf::map trigger	2235	cf::map trigger
…		…
2174	#############################################################################	2320	#############################################################################
2175		2321
2176	=head2 EXTENSION DATABASE SUPPORT	2322	=head2 EXTENSION DATABASE SUPPORT
2177		2323
2178	Crossfire maintains a very simple database for extension use. It can	2324	Crossfire maintains a very simple database for extension use. It can
2179	currently store anything that can be serialised using Storable, which	2325	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2180	excludes objects.	2326	convert to/from binary).
2181		2327
2182	The parameter C<$family> should best start with the name of the extension	2328	The parameter C<$family> should best start with the name of the extension
2183	using it, it should be unique.	2329	using it, it should be unique.
2184		2330
2185	=over 4	2331	=over 4
2186		2332
2187	=item $hashref = cf::db_get $family
2188
2189	Return a hashref for use by the extension C<$family>, which can be
2190	modified. After modifications, you have to call C<cf::db_dirty> or
2191	C<cf::db_sync>.
2192
2193	=item $value = cf::db_get $family => $key	2333	=item $value = cf::db_get $family => $key
2194		2334
2195	Returns a single value from the database	2335	Returns a single value from the database.
2196
2197	=item cf::db_put $family => $hashref
2198
2199	Stores the given family hashref into the database. Updates are delayed, if
2200	you want the data to be synced to disk immediately, use C<cf::db_sync>.
2201		2336
2202	=item cf::db_put $family => $key => $value	2337	=item cf::db_put $family => $key => $value
2203		2338
2204	Stores the given C<$value> in the family hash. Updates are delayed, if you	2339	Stores the given C<$value> in the family.
2205	want the data to be synced to disk immediately, use C<cf::db_sync>.
2206
2207	=item cf::db_dirty
2208
2209	Marks the database as dirty, to be updated at a later time.
2210
2211	=item cf::db_sync
2212
2213	Immediately write the database to disk I<if it is dirty>.
2214		2340
2215	=cut	2341	=cut
2216		2342
2217	our $DB;	2343	our $DB;
2218		2344
2219	{	2345	sub db_init {
2220	my $path = cf::localdir . "/database.pst";	2346	unless ($DB) {
		2347	$DB = BDB::db_create $DB_ENV;
2221		2348
2222	sub db_load() {	2349	cf::sync_job {
2223	$DB = stat $path ? Storable::retrieve $path : { };	2350	eval {
2224	}	2351	$DB->set_flags (BDB::CHKSUM);
2225		2352
2226	my $pid;	2353	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2227		2354	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2228	sub db_save() {	2355	cf::cleanup "db_open(db): $!" if $!;
2229	waitpid $pid, 0 if $pid;	2356	};
2230	if (0 == ($pid = fork)) {	2357	cf::cleanup "db_open(db): $@" if $@;
2231	$DB->{_meta}{version} = 1;
2232	Storable::nstore $DB, "$path~";
2233	rename "$path~", $path;
2234	cf::_exit 0 if defined $pid;
2235	}	2358	};
2236	}	2359	}
		2360	}
2237		2361
2238	my $dirty;
2239
2240	sub db_sync() {
2241	db_save if $dirty;
2242	undef $dirty;
2243	}
2244
2245	my $idle = Event->idle (
2246	reentrant => 0,
2247	min => 10,
2248	max => 20,
2249	repeat => 0,
2250	data => WF_AUTOCANCEL,
2251	cb => \&db_sync,
2252	);
2253
2254	sub db_dirty() {
2255	$dirty = 1;
2256	$idle->start;
2257	}
2258
2259	sub db_get($;$) {	2362	sub db_get($$) {
2260	@_ >= 2	2363	my $key = "$_[0]/$_[1]";
2261	? $DB->{$_[0]}{$_[1]}
2262	: ($DB->{$_[0]} ||= { })
2263	}
2264		2364
		2365	cf::sync_job {
		2366	BDB::db_get $DB, undef, $key, my $data;
		2367
		2368	$! ? ()
		2369	: $data
		2370	}
		2371	}
		2372
2265	sub db_put($$;$) {	2373	sub db_put($$$) {
2266	if (@_ >= 3) {	2374	BDB::dbreq_pri 4;
2267	$DB->{$_[0]}{$_[1]} = $_[2];	2375	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2268	} else {	2376	}
2269	$DB->{$_[0]} = $_[1];
2270	}
2271	db_dirty;
2272	}
2273		2377
2274	cf::global->attach (	2378	=item cf::cache $id => [$paths...], $processversion => $process
2275	prio => 10000,	2379
2276	on_cleanup => sub {	2380	Generic caching function that returns the value of the resource $id,
2277	db_sync;	2381	caching and regenerating as required.
		2382
		2383	This function can block.
		2384
		2385	=cut
		2386
		2387	sub cache {
		2388	my ($id, $src, $processversion, $process) = @_;
		2389
		2390	my $meta =
		2391	join "\x00",
		2392	$processversion,
		2393	map {
		2394	aio_stat $_
		2395	and Carp::croak "$_: $!";
		2396
		2397	($_, (stat _)[7,9])
		2398	} @$src;
		2399
		2400	my $dbmeta = db_get cache => "$id/meta";
		2401	if ($dbmeta ne $meta) {
		2402	# changed, we may need to process
		2403
		2404	my @data;
		2405	my $md5;
		2406
		2407	for (0 .. $#$src) {
		2408	0 <= aio_load $src->[$_], $data[$_]
		2409	or Carp::croak "$src->[$_]: $!";
2278	},	2410	}
2279	);	2411
		2412	# if processing is expensive, check
		2413	# checksum first
		2414	if (1) {
		2415	$md5 =
		2416	join "\x00",
		2417	$processversion,
		2418	map {
		2419	Coro::cede;
		2420	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2421	} 0.. $#$src;
		2422
		2423
		2424	my $dbmd5 = db_get cache => "$id/md5";
		2425	if ($dbmd5 eq $md5) {
		2426	db_put cache => "$id/meta", $meta;
		2427
		2428	return db_get cache => "$id/data";
		2429	}
		2430	}
		2431
		2432	my $t1 = Time::HiRes::time;
		2433	my $data = $process->(\@data);
		2434	my $t2 = Time::HiRes::time;
		2435
		2436	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2437
		2438	db_put cache => "$id/data", $data;
		2439	db_put cache => "$id/md5" , $md5;
		2440	db_put cache => "$id/meta", $meta;
		2441
		2442	return $data;
		2443	}
		2444
		2445	db_get cache => "$id/data"
2280	}	2446	}
		2447
		2448	=item fork_call { }, $args
		2449
		2450	Executes the given code block with the given arguments in a seperate
		2451	process, returning the results. Everything must be serialisable with
		2452	Coro::Storable. May, of course, block. Note that the executed sub may
		2453	never block itself or use any form of Event handling.
		2454
		2455	=cut
		2456
		2457	sub fork_call(&@) {
		2458	my ($cb, @args) = @_;
		2459
		2460	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2461	# or die "socketpair: $!";
		2462	pipe my $fh1, my $fh2
		2463	or die "pipe: $!";
		2464
		2465	if (my $pid = fork) {
		2466	close $fh2;
		2467
		2468	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2469	$res = Coro::Storable::thaw $res;
		2470
		2471	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2472
		2473	die $$res unless "ARRAY" eq ref $res;
		2474
		2475	return wantarray ? @$res : $res->[-1];
		2476	} else {
		2477	reset_signals;
		2478	local $SIG{__WARN__};
		2479	local $SIG{__DIE__};
		2480	eval {
		2481	close $fh1;
		2482
		2483	my @res = eval { $cb->(@args) };
		2484	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2485	};
		2486
		2487	warn $@ if $@;
		2488	_exit 0;
		2489	}
		2490	}
		2491
		2492
2281		2493
2282	#############################################################################	2494	#############################################################################
2283	# the server's init and main functions	2495	# the server's init and main functions
2284		2496
2285	sub load_resources {	2497	sub load_facedata($) {
2286	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir	2498	my ($path) = @_;
		2499
		2500	warn "loading facedata from $path\n";
		2501
		2502	my $facedata;
		2503	0 < aio_load $path, $facedata
		2504	or die "$path: $!";
		2505
		2506	$facedata = Coro::Storable::thaw $facedata;
		2507
		2508	$facedata->{version} == 2
		2509	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2510
		2511	{
		2512	my $faces = $facedata->{faceinfo};
		2513
		2514	while (my ($face, $info) = each %$faces) {
		2515	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2516	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2517	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2518	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2519	Coro::cede;
		2520	}
		2521
		2522	while (my ($face, $info) = each %$faces) {
		2523	next unless $info->{smooth};
		2524	my $idx = cf::face::find $face
		2525	or next;
		2526	if (my $smooth = cf::face::find $info->{smooth}) {
		2527	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2528	} else {
		2529	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2530	}
		2531	Coro::cede;
		2532	}
		2533	}
		2534
		2535	{
		2536	my $anims = $facedata->{animinfo};
		2537
		2538	while (my ($anim, $info) = each %$anims) {
		2539	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2540	Coro::cede;
		2541	}
		2542
		2543	cf::anim::invalidate_all; # d'oh
		2544	}
		2545
		2546	1
		2547	}
		2548
		2549	sub reload_regions {
		2550	load_resource_file "$MAPDIR/regions"
2287	or die "unable to load regions file\n";#d#	2551	or die "unable to load regions file\n";
		2552	}
		2553
		2554	sub reload_facedata {
		2555	load_facedata "$DATADIR/facedata"
		2556	or die "unable to load facedata\n";
		2557	}
		2558
		2559	sub reload_archetypes {
		2560	load_resource_file "$DATADIR/archetypes"
		2561	or die "unable to load archetypes\n";
		2562	}
		2563
		2564	sub reload_treasures {
		2565	load_resource_file "$DATADIR/treasures"
		2566	or die "unable to load treasurelists\n";
		2567	}
		2568
		2569	sub reload_resources {
		2570	warn "reloading resource files...\n";
		2571
		2572	reload_regions;
		2573	reload_facedata;
		2574	reload_archetypes;
		2575	reload_treasures;
		2576
		2577	warn "finished reloading resource files\n";
		2578	}
		2579
		2580	sub init {
		2581	reload_resources;
2288	}	2582	}
2289		2583
2290	sub cfg_load {	2584	sub cfg_load {
2291	open my $fh, "<:utf8", cf::confdir . "/config"	2585	open my $fh, "<:utf8", "$CONFDIR/config"
2292	or return;	2586	or return;
2293		2587
2294	local $/;	2588	local $/;
2295	*CFG = YAML::Syck::Load <$fh>;	2589	*CFG = YAML::Syck::Load <$fh>;
2296		2590
…		…
2304	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"	2598	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2305	and die "WARNING: m(un)lockall failed: $!\n";	2599	and die "WARNING: m(un)lockall failed: $!\n";
2306	};	2600	};
2307	warn $@ if $@;	2601	warn $@ if $@;
2308	}	2602	}
2309	}
2310
2311	sub init {
2312	load_resources;
2313	}	2603	}
2314		2604
2315	sub main {	2605	sub main {
2316	# we must not ever block the main coroutine	2606	# we must not ever block the main coroutine
2317	local $Coro::idle = sub {	2607	local $Coro::idle = sub {
…		…
2320	Event::one_event;	2610	Event::one_event;
2321	})->prio (Coro::PRIO_MAX);	2611	})->prio (Coro::PRIO_MAX);
2322	};	2612	};
2323		2613
2324	cfg_load;	2614	cfg_load;
2325	db_load;	2615	db_init;
2326	load_extensions;	2616	load_extensions;
2327		2617
2328	$TICK_WATCHER->start;	2618	$TICK_WATCHER->start;
2329	Event::loop;	2619	Event::loop;
2330	}	2620	}
…		…
2369	my $map = $cf::MAP{$path} or next;	2659	my $map = $cf::MAP{$path} or next;
2370	$map->valid or next;	2660	$map->valid or next;
2371	$map->save;	2661	$map->save;
2372	}	2662	}
2373	warn "end emergency map save\n";	2663	warn "end emergency map save\n";
		2664
		2665	warn "begin emergency database checkpoint\n";
		2666	BDB::db_env_txn_checkpoint $DB_ENV;
		2667	warn "end emergency database checkpoint\n";
2374	};	2668	};
2375		2669
2376	warn "leave emergency perl save\n";	2670	warn "leave emergency perl save\n";
2377	}	2671	}
2378		2672
		2673	sub post_cleanup {
		2674	my ($make_core) = @_;
		2675
		2676	warn Carp::longmess "post_cleanup backtrace"
		2677	if $make_core;
		2678	}
		2679
2379	sub reload() {	2680	sub do_reload_perl() {
2380	# can/must only be called in main	2681	# can/must only be called in main
2381	if ($Coro::current != $Coro::main) {	2682	if ($Coro::current != $Coro::main) {
2382	warn "can only reload from main coroutine";	2683	warn "can only reload from main coroutine";
2383	return;	2684	return;
2384	}	2685	}
2385		2686
2386	warn "reloading...";	2687	warn "reloading...";
2387		2688
2388	warn "cancelling server ticker";	2689	warn "entering sync_job";
2389	$TICK_WATCHER->cancel;
2390		2690
		2691	cf::sync_job {
		2692	cf::write_runtime; # external watchdog should not bark
2391	cf::emergency_save;	2693	cf::emergency_save;
		2694	cf::write_runtime; # external watchdog should not bark
2392		2695
2393	eval {	2696	warn "syncing database to disk";
		2697	BDB::db_env_txn_checkpoint $DB_ENV;
		2698
2394	# if anything goes wrong in here, we should simply crash as we already saved	2699	# if anything goes wrong in here, we should simply crash as we already saved
2395
2396	warn "syncing database to disk";
2397	cf::db_sync;
2398		2700
2399	warn "cancelling all WF_AUTOCANCEL watchers";	2701	warn "cancelling all WF_AUTOCANCEL watchers";
2400	for (Event::all_watchers) {	2702	for (Event::all_watchers) {
2401	$_->cancel if $_->data & WF_AUTOCANCEL;	2703	$_->cancel if $_->data & WF_AUTOCANCEL;
2402	}	2704	}
2403		2705
2404	warn "flushing outstanding aio requests";	2706	warn "flushing outstanding aio requests";
2405	for (;;) {	2707	for (;;) {
		2708	BDB::flush;
2406	IO::AIO::flush;	2709	IO::AIO::flush;
2407	Coro::cede;	2710	Coro::cede;
2408	last unless IO::AIO::nreqs;	2711	last unless IO::AIO::nreqs || BDB::nreqs;
2409	warn "iterate...";	2712	warn "iterate...";
2410	}	2713	}
		2714
		2715	++$RELOAD;
2411		2716
2412	warn "cancelling all extension coros";	2717	warn "cancelling all extension coros";
2413	$_->cancel for values %EXT_CORO;	2718	$_->cancel for values %EXT_CORO;
2414	%EXT_CORO = ();	2719	%EXT_CORO = ();
2415		2720
…		…
2455	Symbol::delete_package "safe::$_"	2760	Symbol::delete_package "safe::$_"
2456	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	2761	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2457		2762
2458	warn "unloading cf.pm \"a bit\"";	2763	warn "unloading cf.pm \"a bit\"";
2459	delete $INC{"cf.pm"};	2764	delete $INC{"cf.pm"};
		2765	delete $INC{"cf/pod.pm"};
2460		2766
2461	# don't, removes xs symbols, too,	2767	# don't, removes xs symbols, too,
2462	# and global variables created in xs	2768	# and global variables created in xs
2463	#Symbol::delete_package __PACKAGE__;	2769	#Symbol::delete_package __PACKAGE__;
2464		2770
…		…
2468	require cf;	2774	require cf;
2469	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2775	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2470		2776
2471	warn "loading config and database again";	2777	warn "loading config and database again";
2472	cf::cfg_load;	2778	cf::cfg_load;
2473	cf::db_load;
2474		2779
2475	warn "loading extensions";	2780	warn "loading extensions";
2476	cf::load_extensions;	2781	cf::load_extensions;
2477		2782
2478	warn "reattaching attachments to objects/players";	2783	warn "reattaching attachments to objects/players";
2479	_global_reattach;	2784	_global_reattach; # objects, sockets
2480	warn "reattaching attachments to maps";	2785	warn "reattaching attachments to maps";
2481	reattach $_ for values %MAP;	2786	reattach $_ for values %MAP;
		2787	warn "reattaching attachments to players";
		2788	reattach $_ for values %PLAYER;
2482		2789
2483	warn "loading reloadable resources";	2790	warn "leaving sync_job";
2484	load_resources;
2485		2791
2486	warn "restarting server ticker";	2792	1
2487		2793	} or do {
2488	$TICK_WATCHER->start;
2489	};
2490
2491	if ($@) {
2492	warn $@;	2794	warn $@;
2493	warn "error while reloading, exiting.";	2795	warn "error while reloading, exiting.";
2494	exit 1;	2796	exit 1;
2495	}	2797	};
2496		2798
2497	warn "reloaded";	2799	warn "reloaded";
2498	};	2800	};
2499		2801
2500	our $RELOAD_WATCHER; # used only during reload	2802	our $RELOAD_WATCHER; # used only during reload
2501		2803
		2804	sub reload_perl() {
		2805	# doing reload synchronously and two reloads happen back-to-back,
		2806	# coro crashes during coro_state_free->destroy here.
		2807
		2808	$RELOAD_WATCHER ||= Event->timer (
		2809	reentrant => 0,
		2810	after => 0,
		2811	data => WF_AUTOCANCEL,
		2812	cb => sub {
		2813	do_reload_perl;
		2814	undef $RELOAD_WATCHER;
		2815	},
		2816	);
		2817	}
		2818
2502	register_command "reload" => sub {	2819	register_command "reload" => sub {
2503	my ($who, $arg) = @_;	2820	my ($who, $arg) = @_;
2504		2821
2505	if ($who->flag (FLAG_WIZ)) {	2822	if ($who->flag (FLAG_WIZ)) {
2506	$who->message ("reloading server.");	2823	$who->message ("reloading server.");
2507		2824	async { reload_perl };
2508	# doing reload synchronously and two reloads happen back-to-back,
2509	# coro crashes during coro_state_free->destroy here.
2510
2511	$RELOAD_WATCHER ||= Event->timer (
2512	reentrant => 0,
2513	after => 0,
2514	data => WF_AUTOCANCEL,
2515	cb => sub {
2516	reload;
2517	undef $RELOAD_WATCHER;
2518	},
2519	);
2520	}	2825	}
2521	};	2826	};
2522		2827
2523	unshift @INC, $LIBDIR;	2828	unshift @INC, $LIBDIR;
2524		2829
2525	my $bug_warning = 0;	2830	my $bug_warning = 0;
		2831
		2832	our @WAIT_FOR_TICK;
		2833	our @WAIT_FOR_TICK_BEGIN;
		2834
		2835	sub wait_for_tick {
		2836	return unless $TICK_WATCHER->is_active;
		2837	return if $Coro::current == $Coro::main;
		2838
		2839	my $signal = new Coro::Signal;
		2840	push @WAIT_FOR_TICK, $signal;
		2841	$signal->wait;
		2842	}
		2843
		2844	sub wait_for_tick_begin {
		2845	return unless $TICK_WATCHER->is_active;
		2846	return if $Coro::current == $Coro::main;
		2847
		2848	my $signal = new Coro::Signal;
		2849	push @WAIT_FOR_TICK_BEGIN, $signal;
		2850	$signal->wait;
		2851	}
2526		2852
2527	$TICK_WATCHER = Event->timer (	2853	$TICK_WATCHER = Event->timer (
2528	reentrant => 0,	2854	reentrant => 0,
2529	parked => 1,	2855	parked => 1,
2530	prio => 0,	2856	prio => 0,
…		…
2535	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	2861	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2536	unless ++$bug_warning > 10;	2862	unless ++$bug_warning > 10;
2537	return;	2863	return;
2538	}	2864	}
2539		2865
2540	$NOW = Event::time;	2866	$NOW = $tick_start = Event::time;
2541		2867
2542	cf::server_tick; # one server iteration	2868	cf::server_tick; # one server iteration
		2869
2543	$RUNTIME += $TICK;	2870	$RUNTIME += $TICK;
2544	$NEXT_TICK += $TICK;	2871	$NEXT_TICK += $TICK;
2545		2872
2546	$WAIT_FOR_TICK->broadcast;	2873	if ($NOW >= $NEXT_RUNTIME_WRITE) {
2547	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;	2874	$NEXT_RUNTIME_WRITE = $NOW + 10;
2548		2875	Coro::async_pool {
2549	Event::sweep;	2876	write_runtime
2550	Coro::cede_notself;	2877	or warn "ERROR: unable to write runtime file: $!";
		2878	};
2551		2879	}
		2880
2552	# my $AFTER = Event::time;	2881	# my $AFTER = Event::time;
2553	# warn $AFTER - $NOW;#d#	2882	# warn $AFTER - $NOW;#d#
2554		2883
		2884	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2885	$sig->send;
		2886	}
		2887	while (my $sig = shift @WAIT_FOR_TICK) {
		2888	$sig->send;
		2889	}
		2890
		2891	$NOW = Event::time;
		2892
2555	# if we are delayed by four ticks or more, skip them all	2893	# if we are delayed by four ticks or more, skip them all
2556	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2894	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2557		2895
2558	$TICK_WATCHER->at ($NEXT_TICK);	2896	$TICK_WATCHER->at ($NEXT_TICK);
2559	$TICK_WATCHER->start;	2897	$TICK_WATCHER->start;
		2898
		2899	$LOAD = ($NOW - $tick_start) / $TICK;
		2900	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2901
		2902	_post_tick;
		2903
		2904
2560	},	2905	},
2561	);	2906	);
2562		2907
2563	{	2908	{
2564	BDB::max_poll_time $TICK * 0.1;	2909	BDB::max_poll_time $TICK * 0.1;
…		…
2589		2934
2590	unless ($DB_ENV) {	2935	unless ($DB_ENV) {
2591	$DB_ENV = BDB::db_env_create;	2936	$DB_ENV = BDB::db_env_create;
2592		2937
2593	cf::sync_job {	2938	cf::sync_job {
		2939	eval {
2594	BDB::db_env_open	2940	BDB::db_env_open
2595	$DB_ENV,	2941	$DB_ENV,
2596	$BDB_ENV_DIR,	2942	$BDBDIR,
2597	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN	2943	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2598	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,	2944	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2599	0666;	2945	0666;
2600		2946
2601	cf::cleanup "$!" if $!;	2947	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
2602		2948
2603	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);	2949	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2950	$DB_ENV->set_lk_detect;
		2951	};
		2952
		2953	cf::cleanup "db_env_open(db): $@" if $@;
2604	};	2954	};
2605	}	2955	}
2606	}	2956	}
2607		2957
2608	{	2958	{
…		…
2610		2960
2611	undef $Coro::AIO::WATCHER;	2961	undef $Coro::AIO::WATCHER;
2612	IO::AIO::max_poll_time $TICK * 0.1;	2962	IO::AIO::max_poll_time $TICK * 0.1;
2613	$AIO_POLL_WATCHER = Event->io (	2963	$AIO_POLL_WATCHER = Event->io (
2614	reentrant => 0,	2964	reentrant => 0,
		2965	data => WF_AUTOCANCEL,
2615	fd => IO::AIO::poll_fileno,	2966	fd => IO::AIO::poll_fileno,
2616	poll => 'r',	2967	poll => 'r',
2617	prio => 6,	2968	prio => 6,
2618	data => WF_AUTOCANCEL,
2619	cb => \&IO::AIO::poll_cb,	2969	cb => \&IO::AIO::poll_cb,
2620	);	2970	);
2621	}	2971	}
2622		2972
2623	$WRITE_RUNTIME_WATCHER = Event->timer (	2973	my $_log_backtrace;
2624	reentrant => 0,	2974
2625	data => WF_AUTOCANCEL,	2975	sub _log_backtrace {
2626	after => 1,	2976	my ($msg, @addr) = @_;
2627	interval => 10,	2977
2628	prio => 6, # keep it lowest so it acts like a watchdog	2978	$msg =~ s/\n//;
2629	cb => Coro::unblock_sub {	2979
2630	write_runtime	2980	# limit the # of concurrent backtraces
2631	or warn "ERROR: unable to write runtime file: $!";	2981	if ($_log_backtrace < 2) {
		2982	++$_log_backtrace;
		2983	async {
		2984	my @bt = fork_call {
		2985	@addr = map { sprintf "%x", $_ } @addr;
		2986	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2987	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2988	or die "addr2line: $!";
		2989
		2990	my @funcs;
		2991	my @res = <$fh>;
		2992	chomp for @res;
		2993	while (@res) {
		2994	my ($func, $line) = splice @res, 0, 2, ();
		2995	push @funcs, "[$func] $line";
		2996	}
		2997
		2998	@funcs
		2999	};
		3000
		3001	LOG llevInfo, "[ABT] $msg\n";
		3002	LOG llevInfo, "[ABT] $_\n" for @bt;
		3003	--$_log_backtrace;
		3004	};
		3005	} else {
		3006	LOG llevInfo, "[ABT] $msg\n";
		3007	LOG llevInfo, "[ABT] [suppressed]\n";
2632	},	3008	}
2633	);	3009	}
		3010
		3011	# load additional modules
		3012	use cf::pod;
2634		3013
2635	END { cf::emergency_save }	3014	END { cf::emergency_save }
2636		3015
2637	1	3016	1
2638		3017

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