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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.277 by root, Sun Jun 10 04:24:50 2007 UTC vs.
Revision 1.316 by root, Mon Jul 23 21:02:50 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 ();
30	use IO::AIO 2.32 ();	31	use IO::AIO 2.32 ();
31	use Time::HiRes;	32	use Time::HiRes;
32	use Compress::LZF;	33	use Compress::LZF;
		34	use Digest::MD5 ();
33		35
34	# configure various modules to our taste	36	# configure various modules to our taste
35	#	37	#
36	$Storable::canonical = 1; # reduce rsync transfers	38	$Storable::canonical = 1; # reduce rsync transfers
37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator	39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
…		…
49	our %COMMAND = ();	51	our %COMMAND = ();
50	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
51		53
52	our @EXTS = (); # list of extension package names	54	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	57	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	58	our %EXT_MAP = (); # pluggable maps
56		59
57	our $RELOAD; # number of reloads so far	60	our $RELOAD; # number of reloads so far
58	our @EVENT;	61	our @EVENT;
…		…
164		167
165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only	168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
166	returns directly I<after> the tick processing (and consequently, can only wake one process	169	returns directly I<after> the tick processing (and consequently, can only wake one process
167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.	170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
168		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
		177
169	=back	178	=back
170		179
171	=cut	180	=cut
172		181
173	BEGIN {	182	BEGIN {
…		…
206	}	215	}
207		216
208	$Event::DIED = sub {	217	$Event::DIED = sub {
209	warn "error in event callback: @_";	218	warn "error in event callback: @_";
210	};	219	};
		220
		221	#############################################################################
211		222
212	=head2 UTILITY FUNCTIONS	223	=head2 UTILITY FUNCTIONS
213		224
214	=over 4	225	=over 4
215		226
…		…
234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
235	$d	246	$d
236	} || "[unable to dump $_[0]: '$@']";	247	} || "[unable to dump $_[0]: '$@']";
237	}	248	}
238		249
239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
240
241	=item $ref = cf::from_json $json	250	=item $ref = cf::from_json $json
242		251
243	Converts a JSON string into the corresponding perl data structure.	252	Converts a JSON string into the corresponding perl data structure.
244		253
245	=item $json = cf::to_json $ref	254	=item $json = cf::to_json $ref
246		255
247	Converts a perl data structure into its JSON representation.	256	Converts a perl data structure into its JSON representation.
		257
		258	=cut
		259
		260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		261
		262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
248		264
249	=item cf::lock_wait $string	265	=item cf::lock_wait $string
250		266
251	Wait until the given lock is available. See cf::lock_acquire.	267	Wait until the given lock is available. See cf::lock_acquire.
252		268
…		…
306	};	322	};
307	$TICK_WATCHER->stop;	323	$TICK_WATCHER->stop;
308	$guard	324	$guard
309	}	325	}
310		326
		327	=item cf::get_slot $time[, $priority[, $name]]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	The optional C<$name> can be used to identify the job to run. It might be
		334	used for statistical purposes and should identify the same time-class.
		335
		336	Useful for short background jobs.
		337
		338	=cut
		339
		340	our @SLOT_QUEUE;
		341	our $SLOT_QUEUE;
		342
		343	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		344	$SLOT_QUEUE = Coro::async {
		345	my $signal = new Coro::Signal;
		346
		347	while () {
		348	next_job:
		349	my $avail = cf::till_tick;
		350	if ($avail > 0.01) {
		351	for (0 .. $#SLOT_QUEUE) {
		352	if ($SLOT_QUEUE[$_][0] < $avail) {
		353	my $job = splice @SLOT_QUEUE, $_, 1, ();
		354	$job->[2]->send;
		355	Coro::cede;
		356	goto next_job;
		357	}
		358	}
		359	}
		360
		361	if (@SLOT_QUEUE) {
		362	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		363	push @cf::WAIT_FOR_TICK, $signal;
		364	$signal->wait;
		365	} else {
		366	Coro::schedule;
		367	}
		368	}
		369	};
		370
		371	sub get_slot($;$$) {
		372	my ($time, $pri, $name) = @_;
		373
		374	$time = $TICK * .6 if $time > $TICK * .6;
		375	my $sig = new Coro::Signal;
		376
		377	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		378	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		379	$SLOT_QUEUE->ready;
		380	$sig->wait;
		381	}
		382
311	=item cf::async { BLOCK }	383	=item cf::async { BLOCK }
312		384
313	Currently the same as Coro::async_pool, meaning you cannot use	385	Currently the same as Coro::async_pool, meaning you cannot use
314	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only	386	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
315	thing you are allowed to do is call C<prio> on it.	387	thing you are allowed to do is call C<prio> on it.
…		…
318		390
319	BEGIN { *async = \&Coro::async_pool }	391	BEGIN { *async = \&Coro::async_pool }
320		392
321	=item cf::sync_job { BLOCK }	393	=item cf::sync_job { BLOCK }
322		394
323	The design of crossfire+ requires that the main coro ($Coro::main) is	395	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	396	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.	397	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		398	acceptable.
326		399
327	If it must be done, put the blocking parts into C<sync_job>. This will run	400	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	401	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	402	server will be frozen during this time, so the block should either finish
330	fast or be very important.	403	fast or be very important.
…		…
390	$EXT_CORO{$coro+0} = $coro;	463	$EXT_CORO{$coro+0} = $coro;
391		464
392	$coro	465	$coro
393	}	466	}
394		467
395	sub write_runtime {	468	=item fork_call { }, $args
396	my $runtime = "$LOCALDIR/runtime";
397		469
398	# first touch the runtime file to show we are still running:	470	Executes the given code block with the given arguments in a seperate
399	# the fsync below can take a very very long time.	471	process, returning the results. Everything must be serialisable with
		472	Coro::Storable. May, of course, block. Note that the executed sub may
		473	never block itself or use any form of Event handling.
400		474
401	IO::AIO::aio_utime $runtime, undef, undef;	475	=cut
402		476
403	my $guard = cf::lock_acquire "write_runtime";	477	sub _store_scalar {
404		478	open my $fh, ">", \my $buf
405	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	479	or die "fork_call: cannot open fh-to-buf in child : $!";
406	or return;	480	Storable::store_fd $_[0], $fh;
407
408	my $value = $cf::RUNTIME + 90 + 10;
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	481	close $fh;
423	or return;
424		482
425	aio_rename "$runtime~", $runtime	483	$buf
426	and return;	484	}
427		485
428	warn "runtime file written.\n";	486	sub fork_call(&@) {
		487	my ($cb, @args) = @_;
429		488
		489	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		490	# or die "socketpair: $!";
		491	pipe my $fh1, my $fh2
		492	or die "pipe: $!";
		493
		494	if (my $pid = fork) {
		495	close $fh2;
		496
		497	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		498	warn "pst<$res>" unless $res =~ /^pst/;
		499	$res = Coro::Storable::thaw $res;
		500
		501	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		502
		503	Carp::confess $$res unless "ARRAY" eq ref $res;
		504
		505	return wantarray ? @$res : $res->[-1];
		506	} else {
		507	reset_signals;
		508	local $SIG{__WARN__};
		509	local $SIG{__DIE__};
		510	# just in case, this hack effectively disables event
		511	# in the child. cleaner and slower would be canceling all watchers,
		512	# but this works for the time being.
		513	local $Coro::idle;
		514	$Coro::current->prio (Coro::PRIO_MAX);
		515
		516	eval {
		517	close $fh1;
		518
		519	my @res = eval { $cb->(@args) };
		520
		521	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		522	close $fh2;
		523	};
		524
		525	warn $@ if $@;
		526	_exit 0;
430	1	527	}
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=cut
		540
		541	our $DB;
		542
		543	sub db_init {
		544	unless ($DB) {
		545	$DB = BDB::db_create $DB_ENV;
		546
		547	cf::sync_job {
		548	eval {
		549	$DB->set_flags (BDB::CHKSUM);
		550
		551	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		552	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		553	cf::cleanup "db_open(db): $!" if $!;
		554	};
		555	cf::cleanup "db_open(db): $@" if $@;
		556	};
		557	}
		558	}
		559
		560	sub db_get($$) {
		561	my $key = "$_[0]/$_[1]";
		562
		563	cf::sync_job {
		564	BDB::db_get $DB, undef, $key, my $data;
		565
		566	$! ? ()
		567	: $data
		568	}
		569	}
		570
		571	sub db_put($$$) {
		572	BDB::dbreq_pri 4;
		573	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		574	}
		575
		576	=item cf::cache $id => [$paths...], $processversion => $process
		577
		578	Generic caching function that returns the value of the resource $id,
		579	caching and regenerating as required.
		580
		581	This function can block.
		582
		583	=cut
		584
		585	sub cache {
		586	my ($id, $src, $processversion, $process) = @_;
		587
		588	my $meta =
		589	join "\x00",
		590	$processversion,
		591	map {
		592	aio_stat $_
		593	and Carp::croak "$_: $!";
		594
		595	($_, (stat _)[7,9])
		596	} @$src;
		597
		598	my $dbmeta = db_get cache => "$id/meta";
		599	if ($dbmeta ne $meta) {
		600	# changed, we may need to process
		601
		602	my @data;
		603	my $md5;
		604
		605	for (0 .. $#$src) {
		606	0 <= aio_load $src->[$_], $data[$_]
		607	or Carp::croak "$src->[$_]: $!";
		608	}
		609
		610	# if processing is expensive, check
		611	# checksum first
		612	if (1) {
		613	$md5 =
		614	join "\x00",
		615	$processversion,
		616	map {
		617	Coro::cede;
		618	($src->[$_], Digest::MD5::md5_hex $data[$_])
		619	} 0.. $#$src;
		620
		621
		622	my $dbmd5 = db_get cache => "$id/md5";
		623	if ($dbmd5 eq $md5) {
		624	db_put cache => "$id/meta", $meta;
		625
		626	return db_get cache => "$id/data";
		627	}
		628	}
		629
		630	my $t1 = Time::HiRes::time;
		631	my $data = $process->(\@data);
		632	my $t2 = Time::HiRes::time;
		633
		634	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		635
		636	db_put cache => "$id/data", $data;
		637	db_put cache => "$id/md5" , $md5;
		638	db_put cache => "$id/meta", $meta;
		639
		640	return $data;
		641	}
		642
		643	db_get cache => "$id/data"
431	}	644	}
432		645
433	=item cf::datalog type => key => value, ...	646	=item cf::datalog type => key => value, ...
434		647
435	Log a datalog packet of the given type with the given key-value pairs.	648	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")	666	attach callbacks/event handlers (a collection of which is called an "attachment")
454	to it. All such attachable objects support the following methods.	667	to it. All such attachable objects support the following methods.
455		668
456	In the following description, CLASS can be any of C<global>, C<object>	669	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	670	C<player>, C<client> or C<map> (i.e. the attachable objects in
458	crossfire+).	671	Crossfire TRT).
459		672
460	=over 4	673	=over 4
461		674
462	=item $attachable->attach ($attachment, key => $value...)	675	=item $attachable->attach ($attachment, key => $value...)
463		676
…		…
665	_attach $registry, $klass, @attach;	878	_attach $registry, $klass, @attach;
666	}	879	}
667		880
668	$obj->{$name} = \%arg;	881	$obj->{$name} = \%arg;
669	} else {	882	} else {
670	warn "object uses attachment '$name' that is not available, postponing.\n";	883	warn "object uses attachment '$name' which is not available, postponing.\n";
671	}	884	}
672		885
673	$obj->{_attachment}{$name} = undef;	886	$obj->{_attachment}{$name} = undef;
674	}	887	}
675		888
…		…
715	";	928	";
716	die if $@;	929	die if $@;
717	}	930	}
718		931
719	our $override;	932	our $override;
720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	933	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
721		934
722	sub override {	935	sub override {
723	$override = 1;	936	$override = 1;
724	@invoke_results = ();	937	@INVOKE_RESULTS = (@_);
725	}	938	}
726		939
727	sub do_invoke {	940	sub do_invoke {
728	my $event = shift;	941	my $event = shift;
729	my $callbacks = shift;	942	my $callbacks = shift;
730		943
731	@invoke_results = ();	944	@INVOKE_RESULTS = ();
732		945
733	local $override;	946	local $override;
734		947
735	for (@$callbacks) {	948	for (@$callbacks) {
736	eval { &{$_->[1]} };	949	eval { &{$_->[1]} };
…		…
753		966
754	Generate an object-specific event with the given arguments.	967	Generate an object-specific event with the given arguments.
755		968
756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	969	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
757	removed in future versions), and there is no public API to access override	970	removed in future versions), and there is no public API to access override
758	results (if you must, access C<@cf::invoke_results> directly).	971	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
759		972
760	=back	973	=back
761		974
762	=cut	975	=cut
763		976
764	#############################################################################	977	#############################################################################
765	# object support	978	# object support
		979	#
		980
		981	sub _can_merge {
		982	my ($ob1, $ob2) = @_;
		983
		984	local $Storable::canonical = 1;
		985	my $fob1 = Storable::freeze $ob1;
		986	my $fob2 = Storable::freeze $ob2;
		987
		988	$fob1 eq $fob2
		989	}
766		990
767	sub reattach {	991	sub reattach {
768	# basically do the same as instantiate, without calling instantiate	992	# basically do the same as instantiate, without calling instantiate
769	my ($obj) = @_;	993	my ($obj) = @_;
770		994
…		…
877	warn sprintf "loading %s (%d)\n",	1101	warn sprintf "loading %s (%d)\n",
878	$filename, length $data, scalar @{$av || []};	1102	$filename, length $data, scalar @{$av || []};
879	return ($data, $av);	1103	return ($data, $av);
880	}	1104	}
881		1105
		1106	=head2 COMMAND CALLBACKS
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
882	#############################################################################	1112	#############################################################################
883	# command handling &c	1113	# command handling &c
884		1114
885	=item cf::register_command $name => \&callback($ob,$args);	1115	=item cf::register_command $name => \&callback($ob,$args);
886		1116
…		…
898	push @{ $COMMAND{$name} }, [$caller, $cb];	1128	push @{ $COMMAND{$name} }, [$caller, $cb];
899	}	1129	}
900		1130
901	=item cf::register_extcmd $name => \&callback($pl,$packet);	1131	=item cf::register_extcmd $name => \&callback($pl,$packet);
902		1132
903	Register a callbackf ro execution when the client sends an extcmd packet.	1133	Register a callback for execution when the client sends an (synchronous)
		1134	extcmd packet. Ext commands will be processed in the order they are
		1135	received by the server, like other user commands. The first argument is
		1136	the logged-in player. Ext commands can only be processed after a player
		1137	has logged in successfully.
904		1138
905	If the callback returns something, it is sent back as if reply was being	1139	If the callback returns something, it is sent back as if reply was being
906	called.	1140	called.
907		1141
		1142	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1143
		1144	Register a callback for execution when the client sends an (asynchronous)
		1145	exticmd packet. Exti commands are processed by the server as soon as they
		1146	are received, i.e. out of order w.r.t. other commands. The first argument
		1147	is a client socket. Exti commands can be received anytime, even before
		1148	log-in.
		1149
		1150	If the callback returns something, it is sent back as if reply was being
		1151	called.
		1152
908	=cut	1153	=cut
909		1154
910	sub register_extcmd {	1155	sub register_extcmd {
911	my ($name, $cb) = @_;	1156	my ($name, $cb) = @_;
912		1157
913	$EXTCMD{$name} = $cb;	1158	$EXTCMD{$name} = $cb;
		1159	}
		1160
		1161	sub register_exticmd {
		1162	my ($name, $cb) = @_;
		1163
		1164	$EXTICMD{$name} = $cb;
914	}	1165	}
915		1166
916	cf::player->attach (	1167	cf::player->attach (
917	on_command => sub {	1168	on_command => sub {
918	my ($pl, $name, $params) = @_;	1169	my ($pl, $name, $params) = @_;
…		…
927	cf::override;	1178	cf::override;
928	},	1179	},
929	on_extcmd => sub {	1180	on_extcmd => sub {
930	my ($pl, $buf) = @_;	1181	my ($pl, $buf) = @_;
931		1182
932	my $msg = eval { from_json $buf };	1183	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
933		1184
934	if (ref $msg) {	1185	if (ref $msg) {
		1186	my ($type, $reply, @payload) =
		1187	"ARRAY" eq ref $msg
		1188	? @$msg
		1189	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1190
935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1191	if (my $cb = $EXTCMD{$type}) {
936	if (my %reply = $cb->($pl, $msg)) {	1192	my @reply = $cb->($pl, @payload);
		1193
937	$pl->ext_reply ($msg->{msgid}, %reply);	1194	$pl->ext_reply ($reply, @reply)
938	}	1195	if $reply;
939	}	1196	}
940	} else {	1197	} else {
941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1198	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
942	}	1199	}
943		1200
944	cf::override;	1201	cf::override;
945	},	1202	},
946	);	1203	);
947		1204
948	sub load_extension {
949	my ($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 {	1205	sub load_extensions {
		1206	cf::sync_job {
		1207	my %todo;
		1208
983	for my $ext (<$LIBDIR/*.ext>) {	1209	for my $path (<$LIBDIR/*.ext>) {
984	next unless -r $ext;	1210	next unless -r $path;
985	eval {	1211
986	load_extension $ext;	1212	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1213	my $base = $1;
		1214	my $pkg = $1;
		1215	$pkg =~ s/[^[:word:]]/_/g;
		1216	$pkg = "ext::$pkg";
		1217
		1218	open my $fh, "<:utf8", $path
		1219	or die "$path: $!";
		1220
		1221	my $source = do { local $/; <$fh> };
		1222
		1223	my %ext = (
		1224	path => $path,
		1225	base => $base,
		1226	pkg => $pkg,
		1227	);
		1228
		1229	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1230	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1231
		1232	$ext{source} =
		1233	"package $pkg; use strict; use utf8;\n"
		1234	. "#line 1 \"$path\"\n{\n"
		1235	. $source
		1236	. "\n};\n1";
		1237
		1238	$todo{$base} = \%ext;
		1239	}
		1240
		1241	my %done;
		1242	while (%todo) {
		1243	my $progress;
		1244
		1245	while (my ($k, $v) = each %todo) {
		1246	for (split /,\s*/, $v->{meta}{depends}) {
		1247	goto skip
		1248	unless exists $done{$_};
		1249	}
		1250
		1251	warn "... loading '$k' into '$v->{pkg}'\n";
		1252
		1253	unless (eval $v->{source}) {
		1254	my $msg = $@ ? "$v->{path}: $@\n"
		1255	: "$v->{base}: extension inactive.\n";
		1256
		1257	if (exists $v->{meta}{mandatory}) {
		1258	warn $msg;
		1259	warn "mandatory extension failed to load, exiting.\n";
		1260	exit 1;
		1261	}
		1262
		1263	warn $msg;
		1264	}
		1265
		1266	$done{$k} = delete $todo{$k};
		1267	push @EXTS, $v->{pkg};
		1268	$progress = 1;
987	1	1269	}
988	} or warn "$ext not loaded: $@";	1270
		1271	skip:
		1272	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1273	unless $progress;
		1274	}
989	}	1275	};
990	}	1276	}
991		1277
992	#############################################################################	1278	#############################################################################
		1279
		1280	=back
993		1281
994	=head2 CORE EXTENSIONS	1282	=head2 CORE EXTENSIONS
995		1283
996	Functions and methods that extend core crossfire objects.	1284	Functions and methods that extend core crossfire objects.
997		1285
…		…
1185	}	1473	}
1186		1474
1187	\@paths	1475	\@paths
1188	}	1476	}
1189		1477
		1478	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1479
		1480	Expand crossfire pod fragments into protocol xml.
		1481
		1482	=cut
		1483
		1484	sub expand_cfpod {
		1485	((my $self), (local $_)) = @_;
		1486
		1487	# escape & and <
		1488	s/&/&amp;/g;
		1489	s/(?<![BIUGH])</&lt;/g;
		1490
		1491	# this is buggy, it needs to properly take care of nested <'s
		1492
		1493	1 while
		1494	# replace B<>, I<>, U<> etc.
		1495	s/B<([^\>]*)>/<b>$1<\/b>/
		1496	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1497	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1498	# replace G<male|female> tags
		1499	|| s{G<([^>|]*)\|([^>]*)>}{
		1500	$self->gender ? $2 : $1
		1501	}ge
		1502	# replace H<hint text>
		1503	|| s{H<([^\>]*)>}
		1504	{
		1505	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1506	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1507	"")
		1508	[$self->{hintmode}]
		1509	}ge;
		1510
		1511	# create single paragraphs (very hackish)
		1512	s/(?<=\S)\n(?=\w)/ /g;
		1513
		1514	# compress some whitespace
		1515	s/\s+\n/\n/g; # ws line-ends
		1516	s/\n\n+/\n/g; # double lines
		1517	s/^\n+//; # beginning lines
		1518	s/\n+$//; # ending lines
		1519
		1520	$_
		1521	}
		1522
		1523	sub hintmode {
		1524	$_[0]{hintmode} = $_[1] if @_ > 1;
		1525	$_[0]{hintmode}
		1526	}
		1527
1190	=item $player->ext_reply ($msgid, %msg)	1528	=item $player->ext_reply ($msgid, @msg)
1191		1529
1192	Sends an ext reply to the player.	1530	Sends an ext reply to the player.
1193		1531
1194	=cut	1532	=cut
1195		1533
1196	sub ext_reply($$%) {	1534	sub ext_reply($$@) {
1197	my ($self, $id, %msg) = @_;	1535	my ($self, $id, @msg) = @_;
1198		1536
1199	$msg{msgid} = $id;	1537	if ($self->ns->extcmd == 2) {
1200		1538	$self->send ("ext " . $self->ns->{json_coder}->encode (["reply-$id", @msg]));
1201	$self->send ("ext " . cf::to_json \%msg);	1539	} elsif ($self->ns->extcmd == 1) {
		1540	#TODO: version 1, remove
		1541	unshift @msg, msgtype => "reply", msgid => $id;
		1542	$self->send ("ext " . $self->ns->{json_coder}->encode ({@msg}));
		1543	}
1202	}	1544	}
1203		1545
1204	=item $player->ext_event ($type, %msg)	1546	=item $player->ext_msg ($type, @msg)
1205		1547
1206	Sends an ext event to the client.	1548	Sends an ext event to the client.
1207		1549
1208	=cut	1550	=cut
1209		1551
1210	sub ext_event($$%) {	1552	sub ext_msg($$@) {
1211	my ($self, $type, %msg) = @_;	1553	my ($self, $type, @msg) = @_;
1212		1554
1213	$self->ns->ext_event ($type, %msg);	1555	$self->ns->ext_msg ($type, @msg);
1214	}	1556	}
1215		1557
1216	=head3 cf::region	1558	=head3 cf::region
1217		1559
1218	=over 4	1560	=over 4
…		…
1221		1563
1222	package cf::region;	1564	package cf::region;
1223		1565
1224	=item cf::region::find_by_path $path	1566	=item cf::region::find_by_path $path
1225		1567
1226	Tries to decuce the probable region for a map knowing only its path.	1568	Tries to decuce the likely region for a map knowing only its path.
1227		1569
1228	=cut	1570	=cut
1229		1571
1230	sub find_by_path($) {	1572	sub find_by_path($) {
1231	my ($path) = @_;	1573	my ($path) = @_;
1232		1574
1233	my ($match, $specificity);	1575	my ($match, $specificity);
1234		1576
1235	for my $region (list) {	1577	for my $region (list) {
1236	if ($region->match && $path =~ $region->match) {	1578	if ($region->{match} && $path =~ $region->{match}) {
1237	($match, $specificity) = ($region, $region->specificity)	1579	($match, $specificity) = ($region, $region->specificity)
1238	if $region->specificity > $specificity;	1580	if $region->specificity > $specificity;
1239	}	1581	}
1240	}	1582	}
1241		1583
…		…
1361	$self->init; # pass $1 etc.	1703	$self->init; # pass $1 etc.
1362	return $self;	1704	return $self;
1363	}	1705	}
1364	}	1706	}
1365		1707
1366	Carp::carp "unable to resolve path '$path' (base '$base').";	1708	Carp::cluck "unable to resolve path '$path' (base '$base').";
1367	()	1709	()
1368	}	1710	}
1369		1711
1370	sub init {	1712	sub init {
1371	my ($self) = @_;	1713	my ($self) = @_;
…		…
1649		1991
1650	undef $MAP_PREFETCH{$path};	1992	undef $MAP_PREFETCH{$path};
1651	$MAP_PREFETCHER ||= cf::async {	1993	$MAP_PREFETCHER ||= cf::async {
1652	while (%MAP_PREFETCH) {	1994	while (%MAP_PREFETCH) {
1653	for my $path (keys %MAP_PREFETCH) {	1995	for my $path (keys %MAP_PREFETCH) {
1654	my $map = find $path	1996	if (my $map = find $path) {
1655	or next;
1656	$map->load;	1997	$map->load;
		1998	}
1657		1999
1658	delete $MAP_PREFETCH{$path};	2000	delete $MAP_PREFETCH{$path};
1659	}	2001	}
1660	}	2002	}
1661	undef $MAP_PREFETCHER;	2003	undef $MAP_PREFETCHER;
…		…
1883		2225
1884	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2226	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1885		2227
1886	if ($self->{record_replies}) {	2228	if ($self->{record_replies}) {
1887	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2229	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2230
1888	} else {	2231	} else {
		2232	my $pl = $self->contr;
		2233
		2234	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2235	my $dialog = $pl->{npc_dialog};
		2236	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2237
		2238	} else {
1889	$msg = $npc->name . " says: $msg" if $npc;	2239	$msg = $npc->name . " says: $msg" if $npc;
1890	$self->message ($msg, $flags);	2240	$self->message ($msg, $flags);
		2241	}
1891	}	2242	}
1892	}	2243	}
1893		2244
1894	=item $player_object->may ("access")	2245	=item $player_object->may ("access")
1895		2246
…		…
1984		2335
1985	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2336	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1986	$self->enter_map ($map, $x, $y);	2337	$self->enter_map ($map, $x, $y);
1987	}	2338	}
1988		2339
1989	=item $player_object->goto ($path, $x, $y[, $check->($map)])	2340	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1990		2341
1991	Moves the player to the given map-path and coordinates by first freezing	2342	Moves the player to the given map-path and coordinates by first freezing
1992	her, loading and preparing them map, calling the provided $check callback	2343	her, loading and preparing them map, calling the provided $check callback
1993	that has to return the map if sucecssful, and then unfreezes the player on	2344	that has to return the map if sucecssful, and then unfreezes the player on
1994	the new (success) or old (failed) map position.	2345	the new (success) or old (failed) map position. In either case, $done will
		2346	be called at the end of this process.
1995		2347
1996	=cut	2348	=cut
1997		2349
1998	our $GOTOGEN;	2350	our $GOTOGEN;
1999		2351
2000	sub cf::object::player::goto {	2352	sub cf::object::player::goto {
2001	my ($self, $path, $x, $y, $check) = @_;	2353	my ($self, $path, $x, $y, $check, $done) = @_;
2002		2354
2003	# do generation counting so two concurrent goto's will be executed in-order	2355	# do generation counting so two concurrent goto's will be executed in-order
2004	my $gen = $self->{_goto_generation} = ++$GOTOGEN;	2356	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
2005		2357
2006	$self->enter_link;	2358	$self->enter_link;
…		…
2026		2378
2027	if ($gen == $self->{_goto_generation}) {	2379	if ($gen == $self->{_goto_generation}) {
2028	delete $self->{_goto_generation};	2380	delete $self->{_goto_generation};
2029	$self->leave_link ($map, $x, $y);	2381	$self->leave_link ($map, $x, $y);
2030	}	2382	}
		2383
		2384	$done->() if $done;
2031	})->prio (1);	2385	})->prio (1);
2032	}	2386	}
2033		2387
2034	=item $player_object->enter_exit ($exit_object)	2388	=item $player_object->enter_exit ($exit_object)
2035		2389
…		…
2104	my $hp = $exit->stats->hp;	2458	my $hp = $exit->stats->hp;
2105	my $sp = $exit->stats->sp;	2459	my $sp = $exit->stats->sp;
2106		2460
2107	$self->enter_link;	2461	$self->enter_link;
2108		2462
		2463	# if exit is damned, update players death & WoR home-position
		2464	$self->contr->savebed ($slaying, $hp, $sp)
		2465	if $exit->flag (FLAG_DAMNED);
		2466
2109	(async {	2467	(async {
2110	$self->deactivate_recursive; # just to be sure	2468	$self->deactivate_recursive; # just to be sure
2111	unless (eval {	2469	unless (eval {
2112	$self->goto ($slaying, $hp, $sp);	2470	$self->goto ($slaying, $hp, $sp);
2113		2471
…		…
2140		2498
2141	utf8::encode $text;	2499	utf8::encode $text;
2142	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2500	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2143	}	2501	}
2144		2502
		2503	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2504
		2505	Send a drawinfo or msg packet to the client, formatting the msg for the
		2506	client if neccessary. C<$type> should be a string identifying the type of
		2507	the message, with C<log> being the default. If C<$color> is negative, suppress
		2508	the message unless the client supports the msg packet.
		2509
		2510	=cut
		2511
		2512	sub cf::client::send_msg {
		2513	my ($self, $channel, $msg, $color, @extra) = @_;
		2514
		2515	$msg = $self->pl->expand_cfpod ($msg);
		2516
		2517	$color &= ~cf::NDI_UNIQUE; # just in case...
		2518
		2519	if (ref $channel) {
		2520	# send meta info to client, if not yet sent
		2521	unless (exists $self->{channel}{$channel->{id}}) {
		2522	$self->{channel}{$channel->{id}} = $channel;
		2523	$self->ext_msg (channel_info => %$channel);
		2524	}
		2525
		2526	$channel = $channel->{id};
		2527	}
		2528
		2529	return unless @extra || length $msg;
		2530
		2531	if ($self->can_msg) {
		2532	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2533	} else {
		2534	# replace some tags by gcfclient-compatible ones
		2535	for ($msg) {
		2536	1 while
		2537	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2538	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2539	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2540	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2541	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2542	}
		2543
		2544	if ($color >= 0) {
		2545	if (0 && $msg =~ /\[/) {
		2546	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2547	} else {
		2548	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2549	$self->send_packet ("drawinfo $color $msg")
		2550	}
		2551	}
		2552	}
		2553	}
		2554
2145	=item $client->ext_event ($type, %msg)	2555	=item $client->ext_msg ($type, @msg)
2146		2556
2147	Sends an exti event to the client.	2557	Sends an ext event to the client.
2148		2558
2149	=cut	2559	=cut
2150		2560
2151	sub cf::client::ext_event($$%) {	2561	sub cf::client::ext_msg($$@) {
2152	my ($self, $type, %msg) = @_;	2562	my ($self, $type, @msg) = @_;
2153		2563
		2564	my $extcmd = $self->extcmd;
		2565
		2566	if ($extcmd == 2) {
		2567	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2568	} elsif ($extcmd == 1) { # TODO: remove
2154	$msg{msgtype} = "event_$type";	2569	push @msg, msgtype => "event_$type";
2155	$self->send_packet ("ext " . cf::to_json \%msg);	2570	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2571	}
2156	}	2572	}
2157		2573
2158	=item $success = $client->query ($flags, "text", \&cb)	2574	=item $success = $client->query ($flags, "text", \&cb)
2159		2575
2160	Queues a query to the client, calling the given callback with	2576	Queues a query to the client, calling the given callback with
2161	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2577	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2162	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2578	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2163		2579
2164	Queries can fail, so check the return code. Or don't, as queries will become	2580	Queries can fail, so check the return code. Or don't, as queries will
2165	reliable at some point in the future.	2581	become reliable at some point in the future.
2166		2582
2167	=cut	2583	=cut
2168		2584
2169	sub cf::client::query {	2585	sub cf::client::query {
2170	my ($self, $flags, $text, $cb) = @_;	2586	my ($self, $flags, $text, $cb) = @_;
…		…
2178	utf8::encode $text;	2594	utf8::encode $text;
2179	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2595	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2180		2596
2181	$self->send_packet ($self->{query_queue}[0][0])	2597	$self->send_packet ($self->{query_queue}[0][0])
2182	if @{ $self->{query_queue} } == 1;	2598	if @{ $self->{query_queue} } == 1;
		2599
		2600	1
2183	}	2601	}
2184		2602
2185	cf::client->attach (	2603	cf::client->attach (
		2604	on_connect => sub {
		2605	my ($ns) = @_;
		2606
		2607	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2608	},
2186	on_reply => sub {	2609	on_reply => sub {
2187	my ($ns, $msg) = @_;	2610	my ($ns, $msg) = @_;
2188		2611
2189	# this weird shuffling is so that direct followup queries	2612	# this weird shuffling is so that direct followup queries
2190	# get handled first	2613	# get handled first
…		…
2202	} else {	2625	} else {
2203	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2626	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2204	}	2627	}
2205	}	2628	}
2206	},	2629	},
		2630	on_exticmd => sub {
		2631	my ($ns, $buf) = @_;
		2632
		2633	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2634
		2635	if (ref $msg) {
		2636	my ($type, $reply, @payload) =
		2637	"ARRAY" eq ref $msg
		2638	? @$msg
		2639	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2640
		2641	if (my $cb = $EXTICMD{$type}) {
		2642	my @reply = $cb->($ns, @payload);
		2643
		2644	$ns->ext_reply ($reply, @reply)
		2645	if $reply;
		2646	}
		2647	} else {
		2648	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2649	}
		2650
		2651	cf::override;
		2652	},
2207	);	2653	);
2208		2654
2209	=item $client->async (\&cb)	2655	=item $client->async (\&cb)
2210		2656
2211	Create a new coroutine, running the specified callback. The coroutine will	2657	Create a new coroutine, running the specified callback. The coroutine will
…		…
2260		2706
2261	=pod	2707	=pod
2262		2708
2263	The following functions and methods are available within a safe environment:	2709	The following functions and methods are available within a safe environment:
2264		2710
2265	cf::object contr pay_amount pay_player map	2711	cf::object
		2712	contr pay_amount pay_player map x y force_find force_add
		2713	insert remove
		2714
2266	cf::object::player player	2715	cf::object::player
2267	cf::player peaceful	2716	player
2268	cf::map trigger	2717
		2718	cf::player
		2719	peaceful
		2720
		2721	cf::map
		2722	trigger
2269		2723
2270	=cut	2724	=cut
2271		2725
2272	for (	2726	for (
2273	["cf::object" => qw(contr pay_amount pay_player map)],	2727	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2728	insert remove)],
2274	["cf::object::player" => qw(player)],	2729	["cf::object::player" => qw(player)],
2275	["cf::player" => qw(peaceful)],	2730	["cf::player" => qw(peaceful)],
2276	["cf::map" => qw(trigger)],	2731	["cf::map" => qw(trigger)],
2277	) {	2732	) {
2278	no strict 'refs';	2733	no strict 'refs';
…		…
2349	=back	2804	=back
2350		2805
2351	=cut	2806	=cut
2352		2807
2353	#############################################################################	2808	#############################################################################
2354
2355	=head2 EXTENSION DATABASE SUPPORT
2356
2357	Crossfire maintains a very simple database for extension use. It can
2358	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2359	convert to/from binary).
2360
2361	The parameter C<$family> should best start with the name of the extension
2362	using it, it should be unique.
2363
2364	=over 4
2365
2366	=item $value = cf::db_get $family => $key
2367
2368	Returns a single value from the database.
2369
2370	=item cf::db_put $family => $key => $value
2371
2372	Stores the given C<$value> in the family.
2373
2374	=cut
2375
2376	our $DB;
2377
2378	sub db_init {
2379	unless ($DB) {
2380	$DB = BDB::db_create $DB_ENV;
2381
2382	cf::sync_job {
2383	eval {
2384	$DB->set_flags (BDB::CHKSUM);
2385
2386	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2387	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2388	cf::cleanup "db_open(db): $!" if $!;
2389	};
2390	cf::cleanup "db_open(db): $@" if $@;
2391	};
2392	}
2393	}
2394
2395	sub db_get($$) {
2396	my $key = "$_[0]/$_[1]";
2397
2398	cf::sync_job {
2399	BDB::db_get $DB, undef, $key, my $data;
2400
2401	$! ? ()
2402	: $data
2403	}
2404	}
2405
2406	sub db_put($$$) {
2407	BDB::dbreq_pri 4;
2408	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2409	}
2410
2411	=item cf::cache $id => [$paths...], $processversion => $process
2412
2413	Generic caching function that returns the value of the resource $id,
2414	caching and regenerating as required.
2415
2416	This function can block.
2417
2418	=cut
2419
2420	sub cache {
2421	my ($id, $src, $processversion, $process) = @_;
2422
2423	my $meta =
2424	join "\x00",
2425	$processversion,
2426	map {
2427	aio_stat $_
2428	and Carp::croak "$_: $!";
2429
2430	($_, (stat _)[7,9])
2431	} @$src;
2432
2433	my $dbmeta = db_get cache => "$id/meta";
2434	if ($dbmeta ne $meta) {
2435	# changed, we may need to process
2436
2437	my @data;
2438	my $md5;
2439
2440	for (0 .. $#$src) {
2441	0 <= aio_load $src->[$_], $data[$_]
2442	or Carp::croak "$src->[$_]: $!";
2443	}
2444
2445	# if processing is expensive, check
2446	# checksum first
2447	if (1) {
2448	$md5 =
2449	join "\x00",
2450	$processversion,
2451	map {
2452	Coro::cede;
2453	($src->[$_], Digest::MD5::md5_hex $data[$_])
2454	} 0.. $#$src;
2455
2456
2457	my $dbmd5 = db_get cache => "$id/md5";
2458	if ($dbmd5 eq $md5) {
2459	db_put cache => "$id/meta", $meta;
2460
2461	return db_get cache => "$id/data";
2462	}
2463	}
2464
2465	my $t1 = Time::HiRes::time;
2466	my $data = $process->(\@data);
2467	my $t2 = Time::HiRes::time;
2468
2469	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2470
2471	db_put cache => "$id/data", $data;
2472	db_put cache => "$id/md5" , $md5;
2473	db_put cache => "$id/meta", $meta;
2474
2475	return $data;
2476	}
2477
2478	db_get cache => "$id/data"
2479	}
2480
2481	=item fork_call { }, $args
2482
2483	Executes the given code block with the given arguments in a seperate
2484	process, returning the results. Everything must be serialisable with
2485	Coro::Storable. May, of course, block. Note that the executed sub may
2486	never block itself or use any form of Event handling.
2487
2488	=cut
2489
2490	sub fork_call(&@) {
2491	my ($cb, @args) = @_;
2492
2493	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2494	# or die "socketpair: $!";
2495	pipe my $fh1, my $fh2
2496	or die "pipe: $!";
2497
2498	if (my $pid = fork) {
2499	close $fh2;
2500
2501	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2502	$res = Coro::Storable::thaw $res;
2503
2504	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2505
2506	die $$res unless "ARRAY" eq ref $res;
2507
2508	return wantarray ? @$res : $res->[-1];
2509	} else {
2510	reset_signals;
2511	local $SIG{__WARN__};
2512	local $SIG{__DIE__};
2513	eval {
2514	close $fh1;
2515
2516	my @res = eval { $cb->(@args) };
2517	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2518	};
2519
2520	warn $@ if $@;
2521	_exit 0;
2522	}
2523	}
2524
2525	#############################################################################
2526	# the server's init and main functions	2809	# the server's init and main functions
2527		2810
2528	sub load_facedata($) {	2811	sub load_facedata($) {
2529	my ($path) = @_;	2812	my ($path) = @_;
2530		2813
…		…
2542	{	2825	{
2543	my $faces = $facedata->{faceinfo};	2826	my $faces = $facedata->{faceinfo};
2544		2827
2545	while (my ($face, $info) = each %$faces) {	2828	while (my ($face, $info) = each %$faces) {
2546	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2829	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2547	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2830	cf::face::set_visibility $idx, $info->{visibility};
		2831	cf::face::set_magicmap $idx, $info->{magicmap};
2548	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2832	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2549	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2833	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2550	Coro::cede;	2834
		2835	cf::cede_to_tick;
2551	}	2836	}
2552		2837
2553	while (my ($face, $info) = each %$faces) {	2838	while (my ($face, $info) = each %$faces) {
2554	next unless $info->{smooth};	2839	next unless $info->{smooth};
2555	my $idx = cf::face::find $face	2840	my $idx = cf::face::find $face
2556	or next;	2841	or next;
2557	if (my $smooth = cf::face::find $info->{smooth}) {	2842	if (my $smooth = cf::face::find $info->{smooth}) {
		2843	cf::face::set_smooth $idx, $smooth;
2558	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2844	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2559	} else {	2845	} else {
2560	warn "smooth face '$info->{smooth}' not found for face '$face'";	2846	warn "smooth face '$info->{smooth}' not found for face '$face'";
2561	}	2847	}
2562	Coro::cede;	2848
		2849	cf::cede_to_tick;
2563	}	2850	}
2564	}	2851	}
2565		2852
2566	{	2853	{
2567	my $anims = $facedata->{animinfo};	2854	my $anims = $facedata->{animinfo};
2568		2855
2569	while (my ($anim, $info) = each %$anims) {	2856	while (my ($anim, $info) = each %$anims) {
2570	cf::anim::set $anim, $info->{frames}, $info->{facings};	2857	cf::anim::set $anim, $info->{frames}, $info->{facings};
2571	Coro::cede;	2858	cf::cede_to_tick;
2572	}	2859	}
2573		2860
2574	cf::anim::invalidate_all; # d'oh	2861	cf::anim::invalidate_all; # d'oh
		2862	}
		2863
		2864	{
		2865	# TODO: for gcfclient pleasure, we should give resources
		2866	# that gcfclient doesn't grok a >10000 face index.
		2867	my $res = $facedata->{resource};
		2868	my $enc = JSON::XS->new->utf8->canonical;
		2869
		2870	while (my ($name, $info) = each %$res) {
		2871	my $meta = $enc->encode ({
		2872	name => $name,
		2873	type => $info->{type},
		2874	copyright => $info->{copyright}, #TODO#
		2875	});
		2876
		2877	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2878
		2879	if ($name =~ /\.jpg$/) {
		2880	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2881	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2882	} else {
		2883	my $data = pack "(w/a*)*", $meta, $info->{data};
		2884	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2885
		2886	cf::face::set_type $idx, 1;
		2887	cf::face::set_data $idx, 0, $data, $chk;
		2888	}
		2889
		2890	cf::cede_to_tick;
		2891	}
2575	}	2892	}
2576		2893
2577	1	2894	1
2578	}	2895	}
2579		2896
2580	sub reload_regions {	2897	sub reload_regions {
2581	load_resource_file "$MAPDIR/regions"	2898	load_resource_file "$MAPDIR/regions"
2582	or die "unable to load regions file\n";	2899	or die "unable to load regions file\n";
		2900
		2901	for (cf::region::list) {
		2902	$_->{match} = qr/$_->{match}/
		2903	if exists $_->{match};
		2904	}
2583	}	2905	}
2584		2906
2585	sub reload_facedata {	2907	sub reload_facedata {
2586	load_facedata "$DATADIR/facedata"	2908	load_facedata "$DATADIR/facedata"
2587	or die "unable to load facedata\n";	2909	or die "unable to load facedata\n";
2588	}	2910	}
2589		2911
2590	sub reload_archetypes {	2912	sub reload_archetypes {
		2913	load_resource_file "$DATADIR/archetypes"
		2914	or die "unable to load archetypes\n";
		2915	#d# NEED to laod twice to resolve forward references
		2916	# this really needs to be done in an extra post-pass
		2917	# (which needs to be synchronous, so solve it differently)
2591	load_resource_file "$DATADIR/archetypes"	2918	load_resource_file "$DATADIR/archetypes"
2592	or die "unable to load archetypes\n";	2919	or die "unable to load archetypes\n";
2593	}	2920	}
2594		2921
2595	sub reload_treasures {	2922	sub reload_treasures {
…		…
2667	},	2994	},
2668	);	2995	);
2669	}	2996	}
2670	}	2997	}
2671		2998
		2999	sub write_runtime {
		3000	my $runtime = "$LOCALDIR/runtime";
		3001
		3002	# first touch the runtime file to show we are still running:
		3003	# the fsync below can take a very very long time.
		3004
		3005	IO::AIO::aio_utime $runtime, undef, undef;
		3006
		3007	my $guard = cf::lock_acquire "write_runtime";
		3008
		3009	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3010	or return;
		3011
		3012	my $value = $cf::RUNTIME + 90 + 10;
		3013	# 10 is the runtime save interval, for a monotonic clock
		3014	# 60 allows for the watchdog to kill the server.
		3015
		3016	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3017	and return;
		3018
		3019	# always fsync - this file is important
		3020	aio_fsync $fh
		3021	and return;
		3022
		3023	# touch it again to show we are up-to-date
		3024	aio_utime $fh, undef, undef;
		3025
		3026	close $fh
		3027	or return;
		3028
		3029	aio_rename "$runtime~", $runtime
		3030	and return;
		3031
		3032	warn "runtime file written.\n";
		3033
		3034	1
		3035	}
		3036
2672	sub emergency_save() {	3037	sub emergency_save() {
2673	my $freeze_guard = cf::freeze_mainloop;	3038	my $freeze_guard = cf::freeze_mainloop;
2674		3039
2675	warn "enter emergency perl save\n";	3040	warn "enter emergency perl save\n";
2676		3041
…		…
2751	%EXT_CORO = ();	3116	%EXT_CORO = ();
2752		3117
2753	warn "removing commands";	3118	warn "removing commands";
2754	%COMMAND = ();	3119	%COMMAND = ();
2755		3120
2756	warn "removing ext commands";	3121	warn "removing ext/exti commands";
2757	%EXTCMD = ();	3122	%EXTCMD = ();
		3123	%EXTICMD = ();
2758		3124
2759	warn "unloading/nuking all extensions";	3125	warn "unloading/nuking all extensions";
2760	for my $pkg (@EXTS) {	3126	for my $pkg (@EXTS) {
2761	warn "... unloading $pkg";	3127	warn "... unloading $pkg";
2762		3128

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