[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.279 by root, Mon Jun 11 22:16:53 2007 UTC vs.
Revision 1.298 by root, Sun Jul 8 14:50:07 2007 UTC

…		…
20	use Coro::Signal;	20	use Coro::Signal;
21	use Coro::Semaphore;	21	use Coro::Semaphore;
22	use Coro::AIO;	22	use Coro::AIO;
23	use Coro::Storable;	23	use Coro::Storable;
24		24
		25	use JSON::XS 1.4 ();
25	use BDB ();	26	use BDB ();
26	use Data::Dumper;	27	use Data::Dumper;
27	use Digest::MD5;	28	use Digest::MD5;
28	use Fcntl;	29	use Fcntl;
29	use YAML::Syck ();	30	use YAML::Syck ();
…		…
49	our %COMMAND = ();	50	our %COMMAND = ();
50	our %COMMAND_TIME = ();	51	our %COMMAND_TIME = ();
51		52
52	our @EXTS = (); # list of extension package names	53	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	54	our %EXTCMD = ();
		55	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	56	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	57	our %EXT_MAP = (); # pluggable maps
56		58
57	our $RELOAD; # number of reloads so far	59	our $RELOAD; # number of reloads so far
58	our @EVENT;	60	our @EVENT;
…		…
206	}	208	}
207		209
208	$Event::DIED = sub {	210	$Event::DIED = sub {
209	warn "error in event callback: @_";	211	warn "error in event callback: @_";
210	};	212	};
		213
		214	#############################################################################
211		215
212	=head2 UTILITY FUNCTIONS	216	=head2 UTILITY FUNCTIONS
213		217
214	=over 4	218	=over 4
215		219
…		…
234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	238	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
235	$d	239	$d
236	} \|\| "[unable to dump $_[0]: '$@']";	240	} \|\| "[unable to dump $_[0]: '$@']";
237	}	241	}
238		242
239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
240
241	=item $ref = cf::from_json $json	243	=item $ref = cf::from_json $json
242		244
243	Converts a JSON string into the corresponding perl data structure.	245	Converts a JSON string into the corresponding perl data structure.
244		246
245	=item $json = cf::to_json $ref	247	=item $json = cf::to_json $ref
246		248
247	Converts a perl data structure into its JSON representation.	249	Converts a perl data structure into its JSON representation.
		250
		251	=cut
		252
		253	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		254
		255	sub to_json ($) { $json_coder->encode ($_[0]) }
		256	sub from_json ($) { $json_coder->decode ($_[0]) }
248		257
249	=item cf::lock_wait $string	258	=item cf::lock_wait $string
250		259
251	Wait until the given lock is available. See cf::lock_acquire.	260	Wait until the given lock is available. See cf::lock_acquire.
252		261
…		…
318		327
319	BEGIN { *async = \&Coro::async_pool }	328	BEGIN { *async = \&Coro::async_pool }
320		329
321	=item cf::sync_job { BLOCK }	330	=item cf::sync_job { BLOCK }
322		331
323	The design of crossfire+ requires that the main coro ($Coro::main) is	332	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
324	always able to handle events or runnable, as crossfire+ is only partly	333	is always able to handle events or runnable, as Crossfire TRT is only
325	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	334	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		335	acceptable.
326		336
327	If it must be done, put the blocking parts into C<sync_job>. This will run	337	If it must be done, put the blocking parts into C<sync_job>. This will run
328	the given BLOCK in another coroutine while waiting for the result. The	338	the given BLOCK in another coroutine while waiting for the result. The
329	server will be frozen during this time, so the block should either finish	339	server will be frozen during this time, so the block should either finish
330	fast or be very important.	340	fast or be very important.
…		…
390	$EXT_CORO{$coro+0} = $coro;	400	$EXT_CORO{$coro+0} = $coro;
391		401
392	$coro	402	$coro
393	}	403	}
394		404
395	sub write_runtime {	405	=item fork_call { }, $args
396	my $runtime = "$LOCALDIR/runtime";
397		406
398	# first touch the runtime file to show we are still running:	407	Executes the given code block with the given arguments in a seperate
399	# the fsync below can take a very very long time.	408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
400		411
401	IO::AIO::aio_utime $runtime, undef, undef;	412	=cut
402		413
403	my $guard = cf::lock_acquire "write_runtime";	414	sub fork_call(&@) {
		415	my ($cb, @args) = @_;
404		416
405	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644	417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
406	or return;	418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
407		421
408	my $value = $cf::RUNTIME + 90 + 10;	422	if (my $pid = fork) {
409	# 10 is the runtime save interval, for a monotonic clock
410	# 60 allows for the watchdog to kill the server.
411
412	(aio_write $fh, 0, (length $value), $value, 0) <= 0
413	and return;
414
415	# always fsync - this file is important
416	aio_fsync $fh
417	and return;
418
419	# touch it again to show we are up-to-date
420	aio_utime $fh, undef, undef;
421
422	close $fh	423	close $fh2;
423	or return;
424		424
425	aio_rename "$runtime~", $runtime	425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
426	and return;	426	warn "pst<$res>" unless $res =~ /^pst/;
		427	$res = Coro::Storable::thaw $res;
427		428
428	warn "runtime file written.\n";	429	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
429		430
		431	Carp::confess $$res unless "ARRAY" eq ref $res;
		432
		433	return wantarray ? @$res : $res->[-1];
		434	} else {
		435	reset_signals;
		436	local $SIG{__WARN__};
		437	local $SIG{__DIE__};
		438	local $Coro::idle;
		439	$Coro::current->prio (Coro::PRIO_MAX);
		440	eval {
		441	close $fh1;
		442
		443	my @res = eval { $cb->(@args) };
		444
		445	open my $fh, ">", \my $buf
		446	or die "fork_call: cannot open fh-to-buf in child : $!";
		447	Storable::store_fd +($@ ? \"$@" : \@res), $fh;
		448	close $fh;
		449
		450	warn "writing ", length $buf;
		451	my $x;
		452	(length $buf) == ($x = syswrite $fh2, $buf)
		453	or warn "error writing ".(length $buf)." != $x\n";
		454	close $fh2;
		455	};
		456
		457	warn $@ if $@;
		458	_exit 0;
430	1	459	}
		460	}
		461
		462	=item $value = cf::db_get $family => $key
		463
		464	Returns a single value from the environment database.
		465
		466	=item cf::db_put $family => $key => $value
		467
		468	Stores the given C<$value> in the family. It can currently store binary
		469	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		470
		471	=cut
		472
		473	our $DB;
		474
		475	sub db_init {
		476	unless ($DB) {
		477	$DB = BDB::db_create $DB_ENV;
		478
		479	cf::sync_job {
		480	eval {
		481	$DB->set_flags (BDB::CHKSUM);
		482
		483	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		484	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		485	cf::cleanup "db_open(db): $!" if $!;
		486	};
		487	cf::cleanup "db_open(db): $@" if $@;
		488	};
		489	}
		490	}
		491
		492	sub db_get($$) {
		493	my $key = "$_[0]/$_[1]";
		494
		495	cf::sync_job {
		496	BDB::db_get $DB, undef, $key, my $data;
		497
		498	$! ? ()
		499	: $data
		500	}
		501	}
		502
		503	sub db_put($$$) {
		504	BDB::dbreq_pri 4;
		505	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		506	}
		507
		508	=item cf::cache $id => [$paths...], $processversion => $process
		509
		510	Generic caching function that returns the value of the resource $id,
		511	caching and regenerating as required.
		512
		513	This function can block.
		514
		515	=cut
		516
		517	sub cache {
		518	my ($id, $src, $processversion, $process) = @_;
		519
		520	my $meta =
		521	join "\x00",
		522	$processversion,
		523	map {
		524	aio_stat $_
		525	and Carp::croak "$_: $!";
		526
		527	($_, (stat _)[7,9])
		528	} @$src;
		529
		530	my $dbmeta = db_get cache => "$id/meta";
		531	if ($dbmeta ne $meta) {
		532	# changed, we may need to process
		533
		534	my @data;
		535	my $md5;
		536
		537	for (0 .. $#$src) {
		538	0 <= aio_load $src->[$_], $data[$_]
		539	or Carp::croak "$src->[$_]: $!";
		540	}
		541
		542	# if processing is expensive, check
		543	# checksum first
		544	if (1) {
		545	$md5 =
		546	join "\x00",
		547	$processversion,
		548	map {
		549	Coro::cede;
		550	($src->[$_], Digest::MD5::md5_hex $data[$_])
		551	} 0.. $#$src;
		552
		553
		554	my $dbmd5 = db_get cache => "$id/md5";
		555	if ($dbmd5 eq $md5) {
		556	db_put cache => "$id/meta", $meta;
		557
		558	return db_get cache => "$id/data";
		559	}
		560	}
		561
		562	my $t1 = Time::HiRes::time;
		563	my $data = $process->(\@data);
		564	my $t2 = Time::HiRes::time;
		565
		566	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		567
		568	db_put cache => "$id/data", $data;
		569	db_put cache => "$id/md5" , $md5;
		570	db_put cache => "$id/meta", $meta;
		571
		572	return $data;
		573	}
		574
		575	db_get cache => "$id/data"
431	}	576	}
432		577
433	=item cf::datalog type => key => value, ...	578	=item cf::datalog type => key => value, ...
434		579
435	Log a datalog packet of the given type with the given key-value pairs.	580	Log a datalog packet of the given type with the given key-value pairs.
…		…
453	attach callbacks/event handlers (a collection of which is called an "attachment")	598	attach callbacks/event handlers (a collection of which is called an "attachment")
454	to it. All such attachable objects support the following methods.	599	to it. All such attachable objects support the following methods.
455		600
456	In the following description, CLASS can be any of C<global>, C<object>	601	In the following description, CLASS can be any of C<global>, C<object>
457	C<player>, C<client> or C<map> (i.e. the attachable objects in	602	C<player>, C<client> or C<map> (i.e. the attachable objects in
458	crossfire+).	603	Crossfire TRT).
459		604
460	=over 4	605	=over 4
461		606
462	=item $attachable->attach ($attachment, key => $value...)	607	=item $attachable->attach ($attachment, key => $value...)
463		608
…		…
665	_attach $registry, $klass, @attach;	810	_attach $registry, $klass, @attach;
666	}	811	}
667		812
668	$obj->{$name} = \%arg;	813	$obj->{$name} = \%arg;
669	} else {	814	} else {
670	warn "object uses attachment '$name' that is not available, postponing.\n";	815	warn "object uses attachment '$name' which is not available, postponing.\n";
671	}	816	}
672		817
673	$obj->{_attachment}{$name} = undef;	818	$obj->{_attachment}{$name} = undef;
674	}	819	}
675		820
…		…
877	warn sprintf "loading %s (%d)\n",	1022	warn sprintf "loading %s (%d)\n",
878	$filename, length $data, scalar @{$av \|\| []};	1023	$filename, length $data, scalar @{$av \|\| []};
879	return ($data, $av);	1024	return ($data, $av);
880	}	1025	}
881		1026
		1027	=head2 COMMAND CALLBACKS
		1028
		1029	=over 4
		1030
		1031	=cut
		1032
882	#############################################################################	1033	#############################################################################
883	# command handling &c	1034	# command handling &c
884		1035
885	=item cf::register_command $name => \&callback($ob,$args);	1036	=item cf::register_command $name => \&callback($ob,$args);
886		1037
…		…
898	push @{ $COMMAND{$name} }, [$caller, $cb];	1049	push @{ $COMMAND{$name} }, [$caller, $cb];
899	}	1050	}
900		1051
901	=item cf::register_extcmd $name => \&callback($pl,$packet);	1052	=item cf::register_extcmd $name => \&callback($pl,$packet);
902		1053
903	Register a callbackf ro execution when the client sends an extcmd packet.	1054	Register a callback for execution when the client sends an (synchronous)
		1055	extcmd packet. Ext commands will be processed in the order they are
		1056	received by the server, like other user commands. The first argument is
		1057	the logged-in player. Ext commands can only be processed after a player
		1058	has logged in successfully.
904		1059
905	If the callback returns something, it is sent back as if reply was being	1060	If the callback returns something, it is sent back as if reply was being
906	called.	1061	called.
907		1062
		1063	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1064
		1065	Register a callback for execution when the client sends an (asynchronous)
		1066	exticmd packet. Exti commands are processed by the server as soon as they
		1067	are received, i.e. out of order w.r.t. other commands. The first argument
		1068	is a client socket. Exti commands can be received anytime, even before
		1069	log-in.
		1070
		1071	If the callback returns something, it is sent back as if reply was being
		1072	called.
		1073
908	=cut	1074	=cut
909		1075
910	sub register_extcmd {	1076	sub register_extcmd {
911	my ($name, $cb) = @_;	1077	my ($name, $cb) = @_;
912		1078
913	$EXTCMD{$name} = $cb;	1079	$EXTCMD{$name} = $cb;
		1080	}
		1081
		1082	sub register_exticmd {
		1083	my ($name, $cb) = @_;
		1084
		1085	$EXTICMD{$name} = $cb;
914	}	1086	}
915		1087
916	cf::player->attach (	1088	cf::player->attach (
917	on_command => sub {	1089	on_command => sub {
918	my ($pl, $name, $params) = @_;	1090	my ($pl, $name, $params) = @_;
…		…
927	cf::override;	1099	cf::override;
928	},	1100	},
929	on_extcmd => sub {	1101	on_extcmd => sub {
930	my ($pl, $buf) = @_;	1102	my ($pl, $buf) = @_;
931		1103
932	my $msg = eval { from_json $buf };	1104	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
933		1105
934	if (ref $msg) {	1106	if (ref $msg) {
935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1107	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
936	if (my %reply = $cb->($pl, $msg)) {	1108	if (my %reply = $cb->($pl, $msg)) {
937	$pl->ext_reply ($msg->{msgid}, %reply);	1109	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
1018	};	1190	};
1019	}	1191	}
1020		1192
1021	#############################################################################	1193	#############################################################################
1022		1194
		1195	=back
		1196
1023	=head2 CORE EXTENSIONS	1197	=head2 CORE EXTENSIONS
1024		1198
1025	Functions and methods that extend core crossfire objects.	1199	Functions and methods that extend core crossfire objects.
1026		1200
1027	=cut	1201	=cut
…		…
1214	}	1388	}
1215		1389
1216	\@paths	1390	\@paths
1217	}	1391	}
1218		1392
		1393	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1394
		1395	Expand crossfire pod fragments into protocol xml.
		1396
		1397	=cut
		1398
		1399	sub expand_cfpod {
		1400	((my $self), (local $_)) = @_;
		1401
		1402	# escape & and <
		1403	s/&/&/g;
		1404	s/(?<![BIUGH])</</g;
		1405
		1406	# this is buggy, it needs to properly take care of nested <'s
		1407
		1408	1 while
		1409	# replace B<>, I<>, U<> etc.
		1410	s/B<([^\>]*)>/<b>$1<\/b>/
		1411	\|\| s/I<([^\>]*)>/<i>$1<\/i>/
		1412	\|\| s/U<([^\>]*)>/<u>$1<\/u>/
		1413	# replace G<male\|female> tags
		1414	\|\| s{G<([^>\|])\\|([^>])>}{
		1415	$self->gender ? $2 : $1
		1416	}ge
		1417	# replace H<hint text>
		1418	\|\| s{H<([^\>]*)>}
		1419	{
		1420	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1421	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1422	"")
		1423	[$self->{hintmode}]
		1424	}ge;
		1425
		1426	# create single paragraphs (very hackish)
		1427	s/(?<=\S)\n(?=\w)/ /g;
		1428
		1429	# compress some whitespace
		1430	s/\s+\n/\n/g; # ws line-ends
		1431	s/\n\n+/\n/g; # double lines
		1432	s/^\n+//; # beginning lines
		1433	s/\n+$//; # ending lines
		1434
		1435	$_
		1436	}
		1437
		1438	sub hintmode {
		1439	$_[0]{hintmode} = $_[1] if @_ > 1;
		1440	$_[0]{hintmode}
		1441	}
		1442
1219	=item $player->ext_reply ($msgid, %msg)	1443	=item $player->ext_reply ($msgid, %msg)
1220		1444
1221	Sends an ext reply to the player.	1445	Sends an ext reply to the player.
1222		1446
1223	=cut	1447	=cut
1224		1448
1225	sub ext_reply($$%) {	1449	sub ext_reply($$%) {
1226	my ($self, $id, %msg) = @_;	1450	my ($self, $id, %msg) = @_;
1227		1451
1228	$msg{msgid} = $id;	1452	$msg{msgid} = $id;
1229		1453	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1230	$self->send ("ext " . cf::to_json \%msg);
1231	}	1454	}
1232		1455
1233	=item $player->ext_event ($type, %msg)	1456	=item $player->ext_event ($type, %msg)
1234		1457
1235	Sends an ext event to the client.	1458	Sends an ext event to the client.
…		…
1250		1473
1251	package cf::region;	1474	package cf::region;
1252		1475
1253	=item cf::region::find_by_path $path	1476	=item cf::region::find_by_path $path
1254		1477
1255	Tries to decuce the probable region for a map knowing only its path.	1478	Tries to decuce the likely region for a map knowing only its path.
1256		1479
1257	=cut	1480	=cut
1258		1481
1259	sub find_by_path($) {	1482	sub find_by_path($) {
1260	my ($path) = @_;	1483	my ($path) = @_;
…		…
1912		2135
1913	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	2136	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
1914		2137
1915	if ($self->{record_replies}) {	2138	if ($self->{record_replies}) {
1916	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2139	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2140
1917	} else {	2141	} else {
		2142	my $pl = $self->contr;
		2143
		2144	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2145	my $diag = $pl->{npc_dialog};
		2146	$diag->{pl}->ext_reply (
		2147	$diag->{id},
		2148	msgtype => "reply",
		2149	msg => $diag->{pl}->expand_cfpod ($msg),
		2150	add_topics => []
		2151	);
		2152
		2153	} else {
1918	$msg = $npc->name . " says: $msg" if $npc;	2154	$msg = $npc->name . " says: $msg" if $npc;
1919	$self->message ($msg, $flags);	2155	$self->message ($msg, $flags);
		2156	}
1920	}	2157	}
1921	}	2158	}
1922		2159
1923	=item $player_object->may ("access")	2160	=item $player_object->may ("access")
1924		2161
…		…
2133	my $hp = $exit->stats->hp;	2370	my $hp = $exit->stats->hp;
2134	my $sp = $exit->stats->sp;	2371	my $sp = $exit->stats->sp;
2135		2372
2136	$self->enter_link;	2373	$self->enter_link;
2137		2374
		2375	# if exit is damned, update players death & WoR home-position
		2376	$self->contr->savebed ($slaying, $hp, $sp)
		2377	if $exit->flag (FLAG_DAMNED);
		2378
2138	(async {	2379	(async {
2139	$self->deactivate_recursive; # just to be sure	2380	$self->deactivate_recursive; # just to be sure
2140	unless (eval {	2381	unless (eval {
2141	$self->goto ($slaying, $hp, $sp);	2382	$self->goto ($slaying, $hp, $sp);
2142		2383
…		…
2169		2410
2170	utf8::encode $text;	2411	utf8::encode $text;
2171	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);	2412	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);
2172	}	2413	}
2173		2414
		2415	=item $client->send_msg ($color, $type, $msg, [extra...])
		2416
		2417	Send a drawinfo or msg packet to the client, formatting the msg for the
		2418	client if neccessary. C<$type> should be a string identifying the type of
		2419	the message, with C<log> being the default. If C<$color> is negative, suppress
		2420	the message unless the client supports the msg packet.
		2421
		2422	=cut
		2423
		2424	sub cf::client::send_msg {
		2425	my ($self, $color, $type, $msg, @extra) = @_;
		2426
		2427	$msg = $self->pl->expand_cfpod ($msg);
		2428
		2429	return unless @extra \|\| length $msg;
		2430
		2431	if ($self->can_msg) {
		2432	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2433	} else {
		2434	# replace some tags by gcfclient-compatible ones
		2435	for ($msg) {
		2436	1 while
		2437	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2438	\|\| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2439	\|\| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2440	\|\| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2441	\|\| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2442	}
		2443
		2444	if ($color >= 0) {
		2445	if (0 && $msg =~ /\[/) {
		2446	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2447	} else {
		2448	$msg =~ s/\[\/?(?:b\|i\|u\|fixed\|color)[^\]]*\]//g;
		2449	$self->send_packet ("drawinfo $color $msg")
		2450	}
		2451	}
		2452	}
		2453	}
		2454
2174	=item $client->ext_event ($type, %msg)	2455	=item $client->ext_event ($type, %msg)
2175		2456
2176	Sends an exti event to the client.	2457	Sends an ext event to the client.
2177		2458
2178	=cut	2459	=cut
2179		2460
2180	sub cf::client::ext_event($$%) {	2461	sub cf::client::ext_event($$%) {
2181	my ($self, $type, %msg) = @_;	2462	my ($self, $type, %msg) = @_;
2182		2463
2183	$msg{msgtype} = "event_$type";	2464	$msg{msgtype} = "event_$type";
2184	$self->send_packet ("ext " . cf::to_json \%msg);	2465	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2185	}	2466	}
2186		2467
2187	=item $success = $client->query ($flags, "text", \&cb)	2468	=item $success = $client->query ($flags, "text", \&cb)
2188		2469
2189	Queues a query to the client, calling the given callback with	2470	Queues a query to the client, calling the given callback with
2190	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2471	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2191	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2472	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2192		2473
2193	Queries can fail, so check the return code. Or don't, as queries will become	2474	Queries can fail, so check the return code. Or don't, as queries will
2194	reliable at some point in the future.	2475	become reliable at some point in the future.
2195		2476
2196	=cut	2477	=cut
2197		2478
2198	sub cf::client::query {	2479	sub cf::client::query {
2199	my ($self, $flags, $text, $cb) = @_;	2480	my ($self, $flags, $text, $cb) = @_;
…		…
2207	utf8::encode $text;	2488	utf8::encode $text;
2208	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2489	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2209		2490
2210	$self->send_packet ($self->{query_queue}[0][0])	2491	$self->send_packet ($self->{query_queue}[0][0])
2211	if @{ $self->{query_queue} } == 1;	2492	if @{ $self->{query_queue} } == 1;
		2493
		2494	1
2212	}	2495	}
2213		2496
2214	cf::client->attach (	2497	cf::client->attach (
		2498	on_connect => sub {
		2499	my ($ns) = @_;
		2500
		2501	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2502	},
2215	on_reply => sub {	2503	on_reply => sub {
2216	my ($ns, $msg) = @_;	2504	my ($ns, $msg) = @_;
2217		2505
2218	# this weird shuffling is so that direct followup queries	2506	# this weird shuffling is so that direct followup queries
2219	# get handled first	2507	# get handled first
…		…
2231	} else {	2519	} else {
2232	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2520	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2233	}	2521	}
2234	}	2522	}
2235	},	2523	},
		2524	on_exticmd => sub {
		2525	my ($ns, $buf) = @_;
		2526
		2527	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2528
		2529	if (ref $msg) {
		2530	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2531	if (my %reply = $cb->($ns, $msg)) {
		2532	$reply{msgid} = $msg->{msgid};
		2533	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2534	}
		2535	}
		2536	} else {
		2537	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2538	}
		2539
		2540	cf::override;
		2541	},
2236	);	2542	);
2237		2543
2238	=item $client->async (\&cb)	2544	=item $client->async (\&cb)
2239		2545
2240	Create a new coroutine, running the specified callback. The coroutine will	2546	Create a new coroutine, running the specified callback. The coroutine will
…		…
2289		2595
2290	=pod	2596	=pod
2291		2597
2292	The following functions and methods are available within a safe environment:	2598	The following functions and methods are available within a safe environment:
2293		2599
2294	cf::object contr pay_amount pay_player map	2600	cf::object
		2601	contr pay_amount pay_player map x y force_find force_add
		2602	insert remove
		2603
2295	cf::object::player player	2604	cf::object::player
2296	cf::player peaceful	2605	player
2297	cf::map trigger	2606
		2607	cf::player
		2608	peaceful
		2609
		2610	cf::map
		2611	trigger
2298		2612
2299	=cut	2613	=cut
2300		2614
2301	for (	2615	for (
2302	["cf::object" => qw(contr pay_amount pay_player map)],	2616	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2617	insert remove)],
2303	["cf::object::player" => qw(player)],	2618	["cf::object::player" => qw(player)],
2304	["cf::player" => qw(peaceful)],	2619	["cf::player" => qw(peaceful)],
2305	["cf::map" => qw(trigger)],	2620	["cf::map" => qw(trigger)],
2306	) {	2621	) {
2307	no strict 'refs';	2622	no strict 'refs';
…		…
2376	}	2691	}
2377		2692
2378	=back	2693	=back
2379		2694
2380	=cut	2695	=cut
2381
2382	#############################################################################
2383
2384	=head2 EXTENSION DATABASE SUPPORT
2385
2386	Crossfire maintains a very simple database for extension use. It can
2387	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2388	convert to/from binary).
2389
2390	The parameter C<$family> should best start with the name of the extension
2391	using it, it should be unique.
2392
2393	=over 4
2394
2395	=item $value = cf::db_get $family => $key
2396
2397	Returns a single value from the database.
2398
2399	=item cf::db_put $family => $key => $value
2400
2401	Stores the given C<$value> in the family.
2402
2403	=cut
2404
2405	our $DB;
2406
2407	sub db_init {
2408	unless ($DB) {
2409	$DB = BDB::db_create $DB_ENV;
2410
2411	cf::sync_job {
2412	eval {
2413	$DB->set_flags (BDB::CHKSUM);
2414
2415	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2416	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2417	cf::cleanup "db_open(db): $!" if $!;
2418	};
2419	cf::cleanup "db_open(db): $@" if $@;
2420	};
2421	}
2422	}
2423
2424	sub db_get($$) {
2425	my $key = "$_[0]/$_[1]";
2426
2427	cf::sync_job {
2428	BDB::db_get $DB, undef, $key, my $data;
2429
2430	$! ? ()
2431	: $data
2432	}
2433	}
2434
2435	sub db_put($$$) {
2436	BDB::dbreq_pri 4;
2437	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2438	}
2439
2440	=item cf::cache $id => [$paths...], $processversion => $process
2441
2442	Generic caching function that returns the value of the resource $id,
2443	caching and regenerating as required.
2444
2445	This function can block.
2446
2447	=cut
2448
2449	sub cache {
2450	my ($id, $src, $processversion, $process) = @_;
2451
2452	my $meta =
2453	join "\x00",
2454	$processversion,
2455	map {
2456	aio_stat $_
2457	and Carp::croak "$_: $!";
2458
2459	($_, (stat _)[7,9])
2460	} @$src;
2461
2462	my $dbmeta = db_get cache => "$id/meta";
2463	if ($dbmeta ne $meta) {
2464	# changed, we may need to process
2465
2466	my @data;
2467	my $md5;
2468
2469	for (0 .. $#$src) {
2470	0 <= aio_load $src->[$_], $data[$_]
2471	or Carp::croak "$src->[$_]: $!";
2472	}
2473
2474	# if processing is expensive, check
2475	# checksum first
2476	if (1) {
2477	$md5 =
2478	join "\x00",
2479	$processversion,
2480	map {
2481	Coro::cede;
2482	($src->[$_], Digest::MD5::md5_hex $data[$_])
2483	} 0.. $#$src;
2484
2485
2486	my $dbmd5 = db_get cache => "$id/md5";
2487	if ($dbmd5 eq $md5) {
2488	db_put cache => "$id/meta", $meta;
2489
2490	return db_get cache => "$id/data";
2491	}
2492	}
2493
2494	my $t1 = Time::HiRes::time;
2495	my $data = $process->(\@data);
2496	my $t2 = Time::HiRes::time;
2497
2498	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2499
2500	db_put cache => "$id/data", $data;
2501	db_put cache => "$id/md5" , $md5;
2502	db_put cache => "$id/meta", $meta;
2503
2504	return $data;
2505	}
2506
2507	db_get cache => "$id/data"
2508	}
2509
2510	=item fork_call { }, $args
2511
2512	Executes the given code block with the given arguments in a seperate
2513	process, returning the results. Everything must be serialisable with
2514	Coro::Storable. May, of course, block. Note that the executed sub may
2515	never block itself or use any form of Event handling.
2516
2517	=cut
2518
2519	sub fork_call(&@) {
2520	my ($cb, @args) = @_;
2521
2522	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2523	# or die "socketpair: $!";
2524	pipe my $fh1, my $fh2
2525	or die "pipe: $!";
2526
2527	if (my $pid = fork) {
2528	close $fh2;
2529
2530	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2531	$res = Coro::Storable::thaw $res;
2532
2533	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2534
2535	die $$res unless "ARRAY" eq ref $res;
2536
2537	return wantarray ? @$res : $res->[-1];
2538	} else {
2539	reset_signals;
2540	local $SIG{__WARN__};
2541	local $SIG{__DIE__};
2542	eval {
2543	close $fh1;
2544
2545	my @res = eval { $cb->(@args) };
2546	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2547	};
2548
2549	warn $@ if $@;
2550	_exit 0;
2551	}
2552	}
2553		2696
2554	#############################################################################	2697	#############################################################################
2555	# the server's init and main functions	2698	# the server's init and main functions
2556		2699
2557	sub load_facedata($) {	2700	sub load_facedata($) {
…		…
2615	load_facedata "$DATADIR/facedata"	2758	load_facedata "$DATADIR/facedata"
2616	or die "unable to load facedata\n";	2759	or die "unable to load facedata\n";
2617	}	2760	}
2618		2761
2619	sub reload_archetypes {	2762	sub reload_archetypes {
		2763	load_resource_file "$DATADIR/archetypes"
		2764	or die "unable to load archetypes\n";
		2765	#d# NEED to laod twice to resolve forward references
		2766	# this really needs to be done in an extra post-pass
		2767	# (which needs to be synchronous, so solve it differently)
2620	load_resource_file "$DATADIR/archetypes"	2768	load_resource_file "$DATADIR/archetypes"
2621	or die "unable to load archetypes\n";	2769	or die "unable to load archetypes\n";
2622	}	2770	}
2623		2771
2624	sub reload_treasures {	2772	sub reload_treasures {
…		…
2696	},	2844	},
2697	);	2845	);
2698	}	2846	}
2699	}	2847	}
2700		2848
		2849	sub write_runtime {
		2850	my $runtime = "$LOCALDIR/runtime";
		2851
		2852	# first touch the runtime file to show we are still running:
		2853	# the fsync below can take a very very long time.
		2854
		2855	IO::AIO::aio_utime $runtime, undef, undef;
		2856
		2857	my $guard = cf::lock_acquire "write_runtime";
		2858
		2859	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2860	or return;
		2861
		2862	my $value = $cf::RUNTIME + 90 + 10;
		2863	# 10 is the runtime save interval, for a monotonic clock
		2864	# 60 allows for the watchdog to kill the server.
		2865
		2866	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2867	and return;
		2868
		2869	# always fsync - this file is important
		2870	aio_fsync $fh
		2871	and return;
		2872
		2873	# touch it again to show we are up-to-date
		2874	aio_utime $fh, undef, undef;
		2875
		2876	close $fh
		2877	or return;
		2878
		2879	aio_rename "$runtime~", $runtime
		2880	and return;
		2881
		2882	warn "runtime file written.\n";
		2883
		2884	1
		2885	}
		2886
2701	sub emergency_save() {	2887	sub emergency_save() {
2702	my $freeze_guard = cf::freeze_mainloop;	2888	my $freeze_guard = cf::freeze_mainloop;
2703		2889
2704	warn "enter emergency perl save\n";	2890	warn "enter emergency perl save\n";
2705		2891
…		…
2780	%EXT_CORO = ();	2966	%EXT_CORO = ();
2781		2967
2782	warn "removing commands";	2968	warn "removing commands";
2783	%COMMAND = ();	2969	%COMMAND = ();
2784		2970
2785	warn "removing ext commands";	2971	warn "removing ext/exti commands";
2786	%EXTCMD = ();	2972	%EXTCMD = ();
		2973	%EXTICMD = ();
2787		2974
2788	warn "unloading/nuking all extensions";	2975	warn "unloading/nuking all extensions";
2789	for my $pkg (@EXTS) {	2976	for my $pkg (@EXTS) {
2790	warn "... unloading $pkg";	2977	warn "... unloading $pkg";
2791		2978

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.279 by root, Mon Jun 11 22:16:53 2007 UTC vs. Revision 1.298 by root, Sun Jul 8 14:50:07 2007 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.279 by root, Mon Jun 11 22:16:53 2007 UTC vs.
Revision 1.298 by root, Sun Jul 8 14:50:07 2007 UTC