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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.276 by root, Sun Jun 10 04:05:47 2007 UTC vs.
Revision 1.287 by root, Mon Jun 25 05:43:45 2007 UTC

…		…
49	our %COMMAND = ();	49	our %COMMAND = ();
50	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
51		51
52	our @EXTS = (); # list of extension package names	52	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	55	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	56	our %EXT_MAP = (); # pluggable maps
56		57
57	our $RELOAD; # number of reloads so far	58	our $RELOAD; # number of reloads so far
58	our @EVENT;	59	our @EVENT;
…		…
206	}	207	}
207		208
208	$Event::DIED = sub {	209	$Event::DIED = sub {
209	warn "error in event callback: @_";	210	warn "error in event callback: @_";
210	};	211	};
		212
		213	#############################################################################
211		214
212	=head2 UTILITY FUNCTIONS	215	=head2 UTILITY FUNCTIONS
213		216
214	=over 4	217	=over 4
215		218
…		…
234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	237	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
235	$d	238	$d
236	} \|\| "[unable to dump $_[0]: '$@']";	239	} \|\| "[unable to dump $_[0]: '$@']";
237	}	240	}
238		241
239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working	242	use JSON::XS ();
240		243
241	=item $ref = cf::from_json $json	244	=item $ref = cf::from_json $json
242		245
243	Converts a JSON string into the corresponding perl data structure.	246	Converts a JSON string into the corresponding perl data structure.
244		247
245	=item $json = cf::to_json $ref	248	=item $json = cf::to_json $ref
246		249
247	Converts a perl data structure into its JSON representation.	250	Converts a perl data structure into its JSON representation.
		251
		252	=cut
		253
		254	our $json_coder = JSON::XS->new->convert_blessed->utf8;
		255
		256	sub to_json ($) { $json_coder->encode ($_[0]) }
		257	sub from_json ($) { $json_coder->decode ($_[0]) }
248		258
249	=item cf::lock_wait $string	259	=item cf::lock_wait $string
250		260
251	Wait until the given lock is available. See cf::lock_acquire.	261	Wait until the given lock is available. See cf::lock_acquire.
252		262
…		…
318		328
319	BEGIN { *async = \&Coro::async_pool }	329	BEGIN { *async = \&Coro::async_pool }
320		330
321	=item cf::sync_job { BLOCK }	331	=item cf::sync_job { BLOCK }
322		332
323	The design of crossfire+ requires that the main coro ($Coro::main) is	333	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	334	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.	335	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		336	acceptable.
326		337
327	If it must be done, put the blocking parts into C<sync_job>. This will run	338	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	339	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	340	server will be frozen during this time, so the block should either finish
330	fast or be very important.	341	fast or be very important.
…		…
390	$EXT_CORO{$coro+0} = $coro;	401	$EXT_CORO{$coro+0} = $coro;
391		402
392	$coro	403	$coro
393	}	404	}
394		405
395	sub write_runtime {	406	=item fork_call { }, $args
396	my $runtime = "$LOCALDIR/runtime";
397		407
398	# first touch the runtime file to show we are still running:	408	Executes the given code block with the given arguments in a seperate
399	# the fsync below can take a very very long time.	409	process, returning the results. Everything must be serialisable with
		410	Coro::Storable. May, of course, block. Note that the executed sub may
		411	never block itself or use any form of Event handling.
400		412
401	IO::AIO::aio_utime $runtime, undef, undef;	413	=cut
402		414
403	my $guard = cf::lock_acquire "write_runtime";	415	sub fork_call(&@) {
		416	my ($cb, @args) = @_;
404		417
405	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644	418	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
406	or return;	419	# or die "socketpair: $!";
		420	pipe my $fh1, my $fh2
		421	or die "pipe: $!";
407		422
408	my $value = $cf::RUNTIME + 90 + 10;	423	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	424	close $fh2;
423	or return;
424		425
425	aio_rename "$runtime~", $runtime	426	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
426	and return;	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	die $$res unless "ARRAY" eq ref $res;
		432
		433	return wantarray ? @$res : $res->[-1];
		434	} else {
		435	reset_signals;
		436	local $SIG{__WARN__};
		437	local $SIG{__DIE__};
		438	eval {
		439	close $fh1;
		440
		441	my @res = eval { $cb->(@args) };
		442	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		443	};
		444
		445	warn $@ if $@;
		446	_exit 0;
430	1	447	}
		448	}
		449
		450	=item $value = cf::db_get $family => $key
		451
		452	Returns a single value from the environment database.
		453
		454	=item cf::db_put $family => $key => $value
		455
		456	Stores the given C<$value> in the family. It can currently store binary
		457	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		458
		459	=cut
		460
		461	our $DB;
		462
		463	sub db_init {
		464	unless ($DB) {
		465	$DB = BDB::db_create $DB_ENV;
		466
		467	cf::sync_job {
		468	eval {
		469	$DB->set_flags (BDB::CHKSUM);
		470
		471	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		472	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		473	cf::cleanup "db_open(db): $!" if $!;
		474	};
		475	cf::cleanup "db_open(db): $@" if $@;
		476	};
		477	}
		478	}
		479
		480	sub db_get($$) {
		481	my $key = "$_[0]/$_[1]";
		482
		483	cf::sync_job {
		484	BDB::db_get $DB, undef, $key, my $data;
		485
		486	$! ? ()
		487	: $data
		488	}
		489	}
		490
		491	sub db_put($$$) {
		492	BDB::dbreq_pri 4;
		493	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		494	}
		495
		496	=item cf::cache $id => [$paths...], $processversion => $process
		497
		498	Generic caching function that returns the value of the resource $id,
		499	caching and regenerating as required.
		500
		501	This function can block.
		502
		503	=cut
		504
		505	sub cache {
		506	my ($id, $src, $processversion, $process) = @_;
		507
		508	my $meta =
		509	join "\x00",
		510	$processversion,
		511	map {
		512	aio_stat $_
		513	and Carp::croak "$_: $!";
		514
		515	($_, (stat _)[7,9])
		516	} @$src;
		517
		518	my $dbmeta = db_get cache => "$id/meta";
		519	if ($dbmeta ne $meta) {
		520	# changed, we may need to process
		521
		522	my @data;
		523	my $md5;
		524
		525	for (0 .. $#$src) {
		526	0 <= aio_load $src->[$_], $data[$_]
		527	or Carp::croak "$src->[$_]: $!";
		528	}
		529
		530	# if processing is expensive, check
		531	# checksum first
		532	if (1) {
		533	$md5 =
		534	join "\x00",
		535	$processversion,
		536	map {
		537	Coro::cede;
		538	($src->[$_], Digest::MD5::md5_hex $data[$_])
		539	} 0.. $#$src;
		540
		541
		542	my $dbmd5 = db_get cache => "$id/md5";
		543	if ($dbmd5 eq $md5) {
		544	db_put cache => "$id/meta", $meta;
		545
		546	return db_get cache => "$id/data";
		547	}
		548	}
		549
		550	my $t1 = Time::HiRes::time;
		551	my $data = $process->(\@data);
		552	my $t2 = Time::HiRes::time;
		553
		554	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		555
		556	db_put cache => "$id/data", $data;
		557	db_put cache => "$id/md5" , $md5;
		558	db_put cache => "$id/meta", $meta;
		559
		560	return $data;
		561	}
		562
		563	db_get cache => "$id/data"
431	}	564	}
432		565
433	=item cf::datalog type => key => value, ...	566	=item cf::datalog type => key => value, ...
434		567
435	Log a datalog packet of the given type with the given key-value pairs.	568	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")	586	attach callbacks/event handlers (a collection of which is called an "attachment")
454	to it. All such attachable objects support the following methods.	587	to it. All such attachable objects support the following methods.
455		588
456	In the following description, CLASS can be any of C<global>, C<object>	589	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	590	C<player>, C<client> or C<map> (i.e. the attachable objects in
458	crossfire+).	591	Crossfire TRT).
459		592
460	=over 4	593	=over 4
461		594
462	=item $attachable->attach ($attachment, key => $value...)	595	=item $attachable->attach ($attachment, key => $value...)
463		596
…		…
665	_attach $registry, $klass, @attach;	798	_attach $registry, $klass, @attach;
666	}	799	}
667		800
668	$obj->{$name} = \%arg;	801	$obj->{$name} = \%arg;
669	} else {	802	} else {
670	warn "object uses attachment '$name' that is not available, postponing.\n";	803	warn "object uses attachment '$name' which is not available, postponing.\n";
671	}	804	}
672		805
673	$obj->{_attachment}{$name} = undef;	806	$obj->{_attachment}{$name} = undef;
674	}	807	}
675		808
…		…
877	warn sprintf "loading %s (%d)\n",	1010	warn sprintf "loading %s (%d)\n",
878	$filename, length $data, scalar @{$av \|\| []};	1011	$filename, length $data, scalar @{$av \|\| []};
879	return ($data, $av);	1012	return ($data, $av);
880	}	1013	}
881		1014
		1015	=head2 COMMAND CALLBACKS
		1016
		1017	=over 4
		1018
		1019	=cut
		1020
882	#############################################################################	1021	#############################################################################
883	# command handling &c	1022	# command handling &c
884		1023
885	=item cf::register_command $name => \&callback($ob,$args);	1024	=item cf::register_command $name => \&callback($ob,$args);
886		1025
…		…
898	push @{ $COMMAND{$name} }, [$caller, $cb];	1037	push @{ $COMMAND{$name} }, [$caller, $cb];
899	}	1038	}
900		1039
901	=item cf::register_extcmd $name => \&callback($pl,$packet);	1040	=item cf::register_extcmd $name => \&callback($pl,$packet);
902		1041
903	Register a callbackf ro execution when the client sends an extcmd packet.	1042	Register a callback for execution when the client sends an (synchronous)
		1043	extcmd packet. Ext commands will be processed in the order they are
		1044	received by the server, like other user commands. The first argument is
		1045	the logged-in player. Ext commands can only be processed after a player
		1046	has logged in successfully.
904		1047
905	If the callback returns something, it is sent back as if reply was being	1048	If the callback returns something, it is sent back as if reply was being
906	called.	1049	called.
907		1050
		1051	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1052
		1053	Register a callback for execution when the client sends an (asynchronous)
		1054	exticmd packet. Exti commands are processed by the server as soon as they
		1055	are received, i.e. out of order w.r.t. other commands. The first argument
		1056	is a client socket. Exti commands can be received anytime, even before
		1057	log-in.
		1058
		1059	If the callback returns something, it is sent back as if reply was being
		1060	called.
		1061
908	=cut	1062	=cut
909		1063
910	sub register_extcmd {	1064	sub register_extcmd {
911	my ($name, $cb) = @_;	1065	my ($name, $cb) = @_;
912		1066
913	$EXTCMD{$name} = $cb;	1067	$EXTCMD{$name} = $cb;
		1068	}
		1069
		1070	sub register_exticmd {
		1071	my ($name, $cb) = @_;
		1072
		1073	$EXTICMD{$name} = $cb;
914	}	1074	}
915		1075
916	cf::player->attach (	1076	cf::player->attach (
917	on_command => sub {	1077	on_command => sub {
918	my ($pl, $name, $params) = @_;	1078	my ($pl, $name, $params) = @_;
…		…
943		1103
944	cf::override;	1104	cf::override;
945	},	1105	},
946	);	1106	);
947		1107
948	sub load_extension {
949	my ($path) = @_;
950
951	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
952	my $base = $1;
953	my $pkg = $1;
954	$pkg =~ s/[^[:word:]]/_/g;
955	$pkg = "ext::$pkg";
956
957	warn "... loading '$path' into '$pkg'\n";
958
959	open my $fh, "<:utf8", $path
960	or die "$path: $!";
961
962	my $source =
963	"package $pkg; use strict; use utf8;\n"
964	. "#line 1 \"$path\"\n{\n"
965	. (do { local $/; <$fh> })
966	. "\n};\n1";
967
968	unless (eval $source) {
969	my $msg = $@ ? "$path: $@\n"
970	: "extension disabled.\n";
971	if ($source =~ /^#!.perl.#.*MANDATORY/m) { # ugly match
972	warn $@;
973	warn "mandatory extension failed to load, exiting.\n";
974	exit 1;
975	}
976	die $@;
977	}
978
979	push @EXTS, $pkg;
980	}
981
982	sub load_extensions {	1108	sub load_extensions {
		1109	cf::sync_job {
		1110	my %todo;
		1111
983	for my $ext (<$LIBDIR/*.ext>) {	1112	for my $path (<$LIBDIR/*.ext>) {
984	next unless -r $ext;	1113	next unless -r $path;
985	eval {	1114
986	load_extension $ext;	1115	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1116	my $base = $1;
		1117	my $pkg = $1;
		1118	$pkg =~ s/[^[:word:]]/_/g;
		1119	$pkg = "ext::$pkg";
		1120
		1121	open my $fh, "<:utf8", $path
		1122	or die "$path: $!";
		1123
		1124	my $source = do { local $/; <$fh> };
		1125
		1126	my %ext = (
		1127	path => $path,
		1128	base => $base,
		1129	pkg => $pkg,
		1130	);
		1131
		1132	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1133	if $source =~ /\A#!.?perl.?#\s(.)$/m;
		1134
		1135	$ext{source} =
		1136	"package $pkg; use strict; use utf8;\n"
		1137	. "#line 1 \"$path\"\n{\n"
		1138	. $source
		1139	. "\n};\n1";
		1140
		1141	$todo{$base} = \%ext;
		1142	}
		1143
		1144	my %done;
		1145	while (%todo) {
		1146	my $progress;
		1147
		1148	while (my ($k, $v) = each %todo) {
		1149	for (split /,\s*/, $v->{meta}{depends}) {
		1150	goto skip
		1151	unless exists $done{$_};
		1152	}
		1153
		1154	warn "... loading '$k' into '$v->{pkg}'\n";
		1155
		1156	unless (eval $v->{source}) {
		1157	my $msg = $@ ? "$v->{path}: $@\n"
		1158	: "$v->{base}: extension inactive.\n";
		1159
		1160	if (exists $v->{meta}{mandatory}) {
		1161	warn $msg;
		1162	warn "mandatory extension failed to load, exiting.\n";
		1163	exit 1;
		1164	}
		1165
		1166	warn $msg;
		1167	}
		1168
		1169	$done{$k} = delete $todo{$k};
		1170	push @EXTS, $v->{pkg};
		1171	$progress = 1;
987	1	1172	}
988	} or warn "$ext not loaded: $@";	1173
		1174	skip:
		1175	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1176	unless $progress;
		1177	}
989	}	1178	};
990	}	1179	}
991		1180
992	#############################################################################	1181	#############################################################################
		1182
		1183	=back
993		1184
994	=head2 CORE EXTENSIONS	1185	=head2 CORE EXTENSIONS
995		1186
996	Functions and methods that extend core crossfire objects.	1187	Functions and methods that extend core crossfire objects.
997		1188
…		…
1185	}	1376	}
1186		1377
1187	\@paths	1378	\@paths
1188	}	1379	}
1189		1380
		1381	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1382
		1383	Expand crossfire pod fragments into protocol xml.
		1384
		1385	=cut
		1386
		1387	sub expand_cfpod {
		1388	((my $self), (local $_)) = @_;
		1389
		1390	# escape & and <
		1391	s/&/&/g;
		1392	s/(?<![BIUGH])</</g;
		1393
		1394	# this is buggy, it needs to properly take care of nested <'s
		1395
		1396	1 while
		1397	# replace B<>, I<>, U<> etc.
		1398	s/B<([^\>]*)>/<b>$1<\/b>/
		1399	\|\| s/I<([^\>]*)>/<i>$1<\/i>/
		1400	\|\| s/U<([^\>]*)>/<u>$1<\/u>/
		1401	# replace G<male\|female> tags
		1402	\|\| s{G<([^>\|])\\|([^>])>}{
		1403	$self->gender ? $2 : $1
		1404	}ge
		1405	# replace H<hint text>
		1406	\|\| s/H<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g;
		1407
		1408	# create single paragraphs (very hackish)
		1409	s/(?<=\S)\n(?=\w)/ /g;
		1410
		1411	$_
		1412	}
		1413
1190	=item $player->ext_reply ($msgid, %msg)	1414	=item $player->ext_reply ($msgid, %msg)
1191		1415
1192	Sends an ext reply to the player.	1416	Sends an ext reply to the player.
1193		1417
1194	=cut	1418	=cut
1195		1419
1196	sub ext_reply($$%) {	1420	sub ext_reply($$%) {
1197	my ($self, $id, %msg) = @_;	1421	my ($self, $id, %msg) = @_;
1198		1422
1199	$msg{msgid} = $id;	1423	$msg{msgid} = $id;
1200
1201	$self->send ("ext " . cf::to_json \%msg);	1424	$self->send ("ext " . cf::to_json \%msg);
1202	}	1425	}
1203		1426
1204	=item $player->ext_event ($type, %msg)	1427	=item $player->ext_event ($type, %msg)
1205		1428
…		…
1221		1444
1222	package cf::region;	1445	package cf::region;
1223		1446
1224	=item cf::region::find_by_path $path	1447	=item cf::region::find_by_path $path
1225		1448
1226	Tries to decuce the probable region for a map knowing only its path.	1449	Tries to decuce the likely region for a map knowing only its path.
1227		1450
1228	=cut	1451	=cut
1229		1452
1230	sub find_by_path($) {	1453	sub find_by_path($) {
1231	my ($path) = @_;	1454	my ($path) = @_;
…		…
1779	}	2002	}
1780		2003
1781	=item $maps = cf::map::tmp_maps	2004	=item $maps = cf::map::tmp_maps
1782		2005
1783	Returns an arrayref with all map paths of currently instantiated and saved	2006	Returns an arrayref with all map paths of currently instantiated and saved
1784	maps.	2007	maps. May block.
1785		2008
1786	=cut	2009	=cut
1787		2010
1788	sub tmp_maps() {	2011	sub tmp_maps() {
1789	[	2012	[
1790	map {	2013	map {
1791	utf8::decode $_;	2014	utf8::decode $_;
1792	!/\.(?:pst\|meta)$/ && /^$PATH_SEP/o	2015	/\.map$/
1793	? normalise $_	2016	? normalise $_
1794	: ()	2017	: ()
1795	} @{ aio_readdir $TMPDIR or [] }	2018	} @{ aio_readdir $TMPDIR or [] }
1796	]	2019	]
1797	}	2020	}
1798		2021
		2022	=item $maps = cf::map::random_maps
		2023
		2024	Returns an arrayref with all map paths of currently instantiated and saved
		2025	random maps. May block.
		2026
		2027	=cut
		2028
		2029	sub random_maps() {
		2030	[
		2031	map {
		2032	utf8::decode $_;
		2033	/\.map$/
		2034	? normalise "?random/$_"
		2035	: ()
		2036	} @{ aio_readdir $RANDOMDIR or [] }
		2037	]
		2038	}
		2039
1799	=item cf::map::unique_maps	2040	=item cf::map::unique_maps
1800		2041
1801	Returns an arrayref of paths of all shared maps that have	2042	Returns an arrayref of paths of all shared maps that have
1802	instantiated unique items. May block.	2043	instantiated unique items. May block.
1803		2044
…		…
1805		2046
1806	sub unique_maps() {	2047	sub unique_maps() {
1807	[	2048	[
1808	map {	2049	map {
1809	utf8::decode $_;	2050	utf8::decode $_;
1810	!/\.(?:pst\|meta)$/ && /^$PATH_SEP/o	2051	/\.map$/
1811	? normalise $_	2052	? normalise $_
1812	: ()	2053	: ()
1813	} @{ aio_readdir $UNIQUEDIR or [] }	2054	} @{ aio_readdir $UNIQUEDIR or [] }
1814	]	2055	]
1815	}	2056	}
…		…
1865		2106
1866	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	2107	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
1867		2108
1868	if ($self->{record_replies}) {	2109	if ($self->{record_replies}) {
1869	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2110	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2111
1870	} else {	2112	} else {
		2113	my $pl = $self->contr;
		2114
		2115	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2116	my $diag = $pl->{npc_dialog};
		2117	$diag->{pl}->ext_reply (
		2118	$diag->{id},
		2119	msgtype => "reply",
		2120	msg => $diag->{pl}->expand_cfpod ($msg),
		2121	add_topics => []
		2122	);
		2123
		2124	} else {
1871	$msg = $npc->name . " says: $msg" if $npc;	2125	$msg = $npc->name . " says: $msg" if $npc;
1872	$self->message ($msg, $flags);	2126	$self->message ($msg, $flags);
		2127	}
1873	}	2128	}
1874	}	2129	}
1875		2130
1876	=item $player_object->may ("access")	2131	=item $player_object->may ("access")
1877		2132
…		…
2122		2377
2123	utf8::encode $text;	2378	utf8::encode $text;
2124	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);	2379	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);
2125	}	2380	}
2126		2381
		2382	=item $client->send_msg ($color, $type, $msg, [extra...])
		2383
		2384	Send a drawinfo or msg packet to the client, formatting the msg for the
		2385	client if neccessary. C<$type> should be a string identifying the type of
		2386	the message, with C<log> being the default. If C<$color> is negative, suppress
		2387	the message unless the client supports the msg packet.
		2388
		2389	=cut
		2390
		2391	sub cf::client::send_msg {
		2392	my ($self, $color, $type, $msg, @extra) = @_;
		2393
		2394	$msg = $self->pl->expand_cfpod ($msg);
		2395
		2396	if ($self->can_msg) {
		2397	$self->send_packet ("msg " . cf::to_json [$color, $type, $msg, @extra]);
		2398	} else {
		2399	# replace some tags by gcfclient-compatible ones
		2400	for ($msg) {
		2401	1 while
		2402	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2403	\|\| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2404	\|\| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2405	\|\| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2406	\|\| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2407	}
		2408
		2409	if ($color >= 0) {
		2410	if (0 && $msg =~ /\[/) {
		2411	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2412	} else {
		2413	$msg =~ s/\[\/?(?:b\|i\|u\|fixed\|color)[^\]]*\]//g;
		2414	$self->send_packet ("drawinfo $color $msg")
		2415	}
		2416	}
		2417	}
		2418	}
		2419
2127	=item $client->ext_event ($type, %msg)	2420	=item $client->ext_event ($type, %msg)
2128		2421
2129	Sends an exti event to the client.	2422	Sends an ext event to the client.
2130		2423
2131	=cut	2424	=cut
2132		2425
2133	sub cf::client::ext_event($$%) {	2426	sub cf::client::ext_event($$%) {
2134	my ($self, $type, %msg) = @_;	2427	my ($self, $type, %msg) = @_;
…		…
2141		2434
2142	Queues a query to the client, calling the given callback with	2435	Queues a query to the client, calling the given callback with
2143	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2436	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2144	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2437	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2145		2438
2146	Queries can fail, so check the return code. Or don't, as queries will become	2439	Queries can fail, so check the return code. Or don't, as queries will
2147	reliable at some point in the future.	2440	become reliable at some point in the future.
2148		2441
2149	=cut	2442	=cut
2150		2443
2151	sub cf::client::query {	2444	sub cf::client::query {
2152	my ($self, $flags, $text, $cb) = @_;	2445	my ($self, $flags, $text, $cb) = @_;
…		…
2160	utf8::encode $text;	2453	utf8::encode $text;
2161	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2454	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2162		2455
2163	$self->send_packet ($self->{query_queue}[0][0])	2456	$self->send_packet ($self->{query_queue}[0][0])
2164	if @{ $self->{query_queue} } == 1;	2457	if @{ $self->{query_queue} } == 1;
		2458
		2459	1
2165	}	2460	}
2166		2461
2167	cf::client->attach (	2462	cf::client->attach (
2168	on_reply => sub {	2463	on_reply => sub {
2169	my ($ns, $msg) = @_;	2464	my ($ns, $msg) = @_;
…		…
2183	$ns->send_packet ($ns->{query_queue}[0][0]);	2478	$ns->send_packet ($ns->{query_queue}[0][0]);
2184	} else {	2479	} else {
2185	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2480	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2186	}	2481	}
2187	}	2482	}
		2483	},
		2484	on_exticmd => sub {
		2485	my ($ns, $buf) = @_;
		2486
		2487	my $msg = eval { from_json $buf };
		2488
		2489	if (ref $msg) {
		2490	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2491	if (my %reply = $cb->($ns, $msg)) {
		2492	$reply{msgid} = $msg->{msgid};
		2493	$ns->send ("ext " . cf::to_json \%reply);
		2494	}
		2495	}
		2496	} else {
		2497	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2498	}
		2499
		2500	cf::override;
2188	},	2501	},
2189	);	2502	);
2190		2503
2191	=item $client->async (\&cb)	2504	=item $client->async (\&cb)
2192		2505
…		…
2329	}	2642	}
2330		2643
2331	=back	2644	=back
2332		2645
2333	=cut	2646	=cut
2334
2335	#############################################################################
2336
2337	=head2 EXTENSION DATABASE SUPPORT
2338
2339	Crossfire maintains a very simple database for extension use. It can
2340	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2341	convert to/from binary).
2342
2343	The parameter C<$family> should best start with the name of the extension
2344	using it, it should be unique.
2345
2346	=over 4
2347
2348	=item $value = cf::db_get $family => $key
2349
2350	Returns a single value from the database.
2351
2352	=item cf::db_put $family => $key => $value
2353
2354	Stores the given C<$value> in the family.
2355
2356	=cut
2357
2358	our $DB;
2359
2360	sub db_init {
2361	unless ($DB) {
2362	$DB = BDB::db_create $DB_ENV;
2363
2364	cf::sync_job {
2365	eval {
2366	$DB->set_flags (BDB::CHKSUM);
2367
2368	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2369	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2370	cf::cleanup "db_open(db): $!" if $!;
2371	};
2372	cf::cleanup "db_open(db): $@" if $@;
2373	};
2374	}
2375	}
2376
2377	sub db_get($$) {
2378	my $key = "$_[0]/$_[1]";
2379
2380	cf::sync_job {
2381	BDB::db_get $DB, undef, $key, my $data;
2382
2383	$! ? ()
2384	: $data
2385	}
2386	}
2387
2388	sub db_put($$$) {
2389	BDB::dbreq_pri 4;
2390	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2391	}
2392
2393	=item cf::cache $id => [$paths...], $processversion => $process
2394
2395	Generic caching function that returns the value of the resource $id,
2396	caching and regenerating as required.
2397
2398	This function can block.
2399
2400	=cut
2401
2402	sub cache {
2403	my ($id, $src, $processversion, $process) = @_;
2404
2405	my $meta =
2406	join "\x00",
2407	$processversion,
2408	map {
2409	aio_stat $_
2410	and Carp::croak "$_: $!";
2411
2412	($_, (stat _)[7,9])
2413	} @$src;
2414
2415	my $dbmeta = db_get cache => "$id/meta";
2416	if ($dbmeta ne $meta) {
2417	# changed, we may need to process
2418
2419	my @data;
2420	my $md5;
2421
2422	for (0 .. $#$src) {
2423	0 <= aio_load $src->[$_], $data[$_]
2424	or Carp::croak "$src->[$_]: $!";
2425	}
2426
2427	# if processing is expensive, check
2428	# checksum first
2429	if (1) {
2430	$md5 =
2431	join "\x00",
2432	$processversion,
2433	map {
2434	Coro::cede;
2435	($src->[$_], Digest::MD5::md5_hex $data[$_])
2436	} 0.. $#$src;
2437
2438
2439	my $dbmd5 = db_get cache => "$id/md5";
2440	if ($dbmd5 eq $md5) {
2441	db_put cache => "$id/meta", $meta;
2442
2443	return db_get cache => "$id/data";
2444	}
2445	}
2446
2447	my $t1 = Time::HiRes::time;
2448	my $data = $process->(\@data);
2449	my $t2 = Time::HiRes::time;
2450
2451	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2452
2453	db_put cache => "$id/data", $data;
2454	db_put cache => "$id/md5" , $md5;
2455	db_put cache => "$id/meta", $meta;
2456
2457	return $data;
2458	}
2459
2460	db_get cache => "$id/data"
2461	}
2462
2463	=item fork_call { }, $args
2464
2465	Executes the given code block with the given arguments in a seperate
2466	process, returning the results. Everything must be serialisable with
2467	Coro::Storable. May, of course, block. Note that the executed sub may
2468	never block itself or use any form of Event handling.
2469
2470	=cut
2471
2472	sub fork_call(&@) {
2473	my ($cb, @args) = @_;
2474
2475	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2476	# or die "socketpair: $!";
2477	pipe my $fh1, my $fh2
2478	or die "pipe: $!";
2479
2480	if (my $pid = fork) {
2481	close $fh2;
2482
2483	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2484	$res = Coro::Storable::thaw $res;
2485
2486	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2487
2488	die $$res unless "ARRAY" eq ref $res;
2489
2490	return wantarray ? @$res : $res->[-1];
2491	} else {
2492	reset_signals;
2493	local $SIG{__WARN__};
2494	local $SIG{__DIE__};
2495	eval {
2496	close $fh1;
2497
2498	my @res = eval { $cb->(@args) };
2499	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2500	};
2501
2502	warn $@ if $@;
2503	_exit 0;
2504	}
2505	}
2506		2647
2507	#############################################################################	2648	#############################################################################
2508	# the server's init and main functions	2649	# the server's init and main functions
2509		2650
2510	sub load_facedata($) {	2651	sub load_facedata($) {
…		…
2649	},	2790	},
2650	);	2791	);
2651	}	2792	}
2652	}	2793	}
2653		2794
		2795	sub write_runtime {
		2796	my $runtime = "$LOCALDIR/runtime";
		2797
		2798	# first touch the runtime file to show we are still running:
		2799	# the fsync below can take a very very long time.
		2800
		2801	IO::AIO::aio_utime $runtime, undef, undef;
		2802
		2803	my $guard = cf::lock_acquire "write_runtime";
		2804
		2805	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2806	or return;
		2807
		2808	my $value = $cf::RUNTIME + 90 + 10;
		2809	# 10 is the runtime save interval, for a monotonic clock
		2810	# 60 allows for the watchdog to kill the server.
		2811
		2812	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2813	and return;
		2814
		2815	# always fsync - this file is important
		2816	aio_fsync $fh
		2817	and return;
		2818
		2819	# touch it again to show we are up-to-date
		2820	aio_utime $fh, undef, undef;
		2821
		2822	close $fh
		2823	or return;
		2824
		2825	aio_rename "$runtime~", $runtime
		2826	and return;
		2827
		2828	warn "runtime file written.\n";
		2829
		2830	1
		2831	}
		2832
2654	sub emergency_save() {	2833	sub emergency_save() {
2655	my $freeze_guard = cf::freeze_mainloop;	2834	my $freeze_guard = cf::freeze_mainloop;
2656		2835
2657	warn "enter emergency perl save\n";	2836	warn "enter emergency perl save\n";
2658		2837
…		…
2733	%EXT_CORO = ();	2912	%EXT_CORO = ();
2734		2913
2735	warn "removing commands";	2914	warn "removing commands";
2736	%COMMAND = ();	2915	%COMMAND = ();
2737		2916
2738	warn "removing ext commands";	2917	warn "removing ext/exti commands";
2739	%EXTCMD = ();	2918	%EXTCMD = ();
		2919	%EXTICMD = ();
2740		2920
2741	warn "unloading/nuking all extensions";	2921	warn "unloading/nuking all extensions";
2742	for my $pkg (@EXTS) {	2922	for my $pkg (@EXTS) {
2743	warn "... unloading $pkg";	2923	warn "... unloading $pkg";
2744		2924

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.276 by root, Sun Jun 10 04:05:47 2007 UTC vs. Revision 1.287 by root, Mon Jun 25 05:43:45 2007 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.276 by root, Sun Jun 10 04:05:47 2007 UTC vs.
Revision 1.287 by root, Mon Jun 25 05:43:45 2007 UTC