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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 1.314 by root, Mon Jul 23 16:53:15 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]
		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	Useful for short background jobs.
		334
		335	=cut
		336
		337	our @SLOT_QUEUE;
		338	our $SLOT_QUEUE;
		339
		340	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		341	$SLOT_QUEUE = Coro::async {
		342	my $signal = new Coro::Signal;
		343
		344	while () {
		345	next_job:
		346	my $avail = cf::till_tick;
		347	if ($avail > 0.01) {
		348	for (0 .. $#SLOT_QUEUE) {
		349	if ($SLOT_QUEUE[$_][0] < $avail) {
		350	my $job = splice @SLOT_QUEUE, $_, 1, ();
		351	$job->[2]->send;
		352	Coro::cede;
		353	goto next_job;
		354	}
		355	}
		356	}
		357
		358	if (@SLOT_QUEUE) {
		359	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		360	push @cf::WAIT_FOR_TICK, $signal;
		361	$signal->wait;
		362	} else {
		363	Coro::schedule;
		364	}
		365	}
		366	};
		367
		368	sub get_slot($;$) {
		369	my ($time, $pri) = @_;
		370
		371	push @SLOT_QUEUE, [$time, $pri, my $sig = new Coro::Signal];
		372	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		373	$SLOT_QUEUE->ready;
		374	$sig->wait;
		375	}
		376
311	=item cf::async { BLOCK }	377	=item cf::async { BLOCK }
312		378
313	Currently the same as Coro::async_pool, meaning you cannot use	379	Currently the same as Coro::async_pool, meaning you cannot use
314	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only	380	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
315	thing you are allowed to do is call C<prio> on it.	381	thing you are allowed to do is call C<prio> on it.
…		…
318		384
319	BEGIN { *async = \&Coro::async_pool }	385	BEGIN { *async = \&Coro::async_pool }
320		386
321	=item cf::sync_job { BLOCK }	387	=item cf::sync_job { BLOCK }
322		388
323	The design of crossfire+ requires that the main coro ($Coro::main) is	389	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	390	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.	391	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		392	acceptable.
326		393
327	If it must be done, put the blocking parts into C<sync_job>. This will run	394	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	395	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	396	server will be frozen during this time, so the block should either finish
330	fast or be very important.	397	fast or be very important.
…		…
390	$EXT_CORO{$coro+0} = $coro;	457	$EXT_CORO{$coro+0} = $coro;
391		458
392	$coro	459	$coro
393	}	460	}
394		461
395	sub write_runtime {	462	=item fork_call { }, $args
396	my $runtime = "$LOCALDIR/runtime";
397		463
398	# first touch the runtime file to show we are still running:	464	Executes the given code block with the given arguments in a seperate
399	# the fsync below can take a very very long time.	465	process, returning the results. Everything must be serialisable with
		466	Coro::Storable. May, of course, block. Note that the executed sub may
		467	never block itself or use any form of Event handling.
400		468
401	IO::AIO::aio_utime $runtime, undef, undef;	469	=cut
402		470
403	my $guard = cf::lock_acquire "write_runtime";	471	sub _store_scalar {
404		472	open my $fh, ">", \my $buf
405	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	473	or die "fork_call: cannot open fh-to-buf in child : $!";
406	or return;	474	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	475	close $fh;
423	or return;
424		476
425	aio_rename "$runtime~", $runtime	477	$buf
426	and return;	478	}
427		479
428	warn "runtime file written.\n";	480	sub fork_call(&@) {
		481	my ($cb, @args) = @_;
429		482
		483	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		484	# or die "socketpair: $!";
		485	pipe my $fh1, my $fh2
		486	or die "pipe: $!";
		487
		488	if (my $pid = fork) {
		489	close $fh2;
		490
		491	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		492	warn "pst<$res>" unless $res =~ /^pst/;
		493	$res = Coro::Storable::thaw $res;
		494
		495	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		496
		497	Carp::confess $$res unless "ARRAY" eq ref $res;
		498
		499	return wantarray ? @$res : $res->[-1];
		500	} else {
		501	reset_signals;
		502	local $SIG{__WARN__};
		503	local $SIG{__DIE__};
		504	# just in case, this hack effectively disables event
		505	# in the child. cleaner and slower would be canceling all watchers,
		506	# but this works for the time being.
		507	local $Coro::idle;
		508	$Coro::current->prio (Coro::PRIO_MAX);
		509
		510	eval {
		511	close $fh1;
		512
		513	my @res = eval { $cb->(@args) };
		514
		515	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		516	close $fh2;
		517	};
		518
		519	warn $@ if $@;
		520	_exit 0;
430	1	521	}
		522	}
		523
		524	=item $value = cf::db_get $family => $key
		525
		526	Returns a single value from the environment database.
		527
		528	=item cf::db_put $family => $key => $value
		529
		530	Stores the given C<$value> in the family. It can currently store binary
		531	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		532
		533	=cut
		534
		535	our $DB;
		536
		537	sub db_init {
		538	unless ($DB) {
		539	$DB = BDB::db_create $DB_ENV;
		540
		541	cf::sync_job {
		542	eval {
		543	$DB->set_flags (BDB::CHKSUM);
		544
		545	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		546	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		547	cf::cleanup "db_open(db): $!" if $!;
		548	};
		549	cf::cleanup "db_open(db): $@" if $@;
		550	};
		551	}
		552	}
		553
		554	sub db_get($$) {
		555	my $key = "$_[0]/$_[1]";
		556
		557	cf::sync_job {
		558	BDB::db_get $DB, undef, $key, my $data;
		559
		560	$! ? ()
		561	: $data
		562	}
		563	}
		564
		565	sub db_put($$$) {
		566	BDB::dbreq_pri 4;
		567	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		568	}
		569
		570	=item cf::cache $id => [$paths...], $processversion => $process
		571
		572	Generic caching function that returns the value of the resource $id,
		573	caching and regenerating as required.
		574
		575	This function can block.
		576
		577	=cut
		578
		579	sub cache {
		580	my ($id, $src, $processversion, $process) = @_;
		581
		582	my $meta =
		583	join "\x00",
		584	$processversion,
		585	map {
		586	aio_stat $_
		587	and Carp::croak "$_: $!";
		588
		589	($_, (stat _)[7,9])
		590	} @$src;
		591
		592	my $dbmeta = db_get cache => "$id/meta";
		593	if ($dbmeta ne $meta) {
		594	# changed, we may need to process
		595
		596	my @data;
		597	my $md5;
		598
		599	for (0 .. $#$src) {
		600	0 <= aio_load $src->[$_], $data[$_]
		601	or Carp::croak "$src->[$_]: $!";
		602	}
		603
		604	# if processing is expensive, check
		605	# checksum first
		606	if (1) {
		607	$md5 =
		608	join "\x00",
		609	$processversion,
		610	map {
		611	Coro::cede;
		612	($src->[$_], Digest::MD5::md5_hex $data[$_])
		613	} 0.. $#$src;
		614
		615
		616	my $dbmd5 = db_get cache => "$id/md5";
		617	if ($dbmd5 eq $md5) {
		618	db_put cache => "$id/meta", $meta;
		619
		620	return db_get cache => "$id/data";
		621	}
		622	}
		623
		624	my $t1 = Time::HiRes::time;
		625	my $data = $process->(\@data);
		626	my $t2 = Time::HiRes::time;
		627
		628	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		629
		630	db_put cache => "$id/data", $data;
		631	db_put cache => "$id/md5" , $md5;
		632	db_put cache => "$id/meta", $meta;
		633
		634	return $data;
		635	}
		636
		637	db_get cache => "$id/data"
431	}	638	}
432		639
433	=item cf::datalog type => key => value, ...	640	=item cf::datalog type => key => value, ...
434		641
435	Log a datalog packet of the given type with the given key-value pairs.	642	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")	660	attach callbacks/event handlers (a collection of which is called an "attachment")
454	to it. All such attachable objects support the following methods.	661	to it. All such attachable objects support the following methods.
455		662
456	In the following description, CLASS can be any of C<global>, C<object>	663	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	664	C<player>, C<client> or C<map> (i.e. the attachable objects in
458	crossfire+).	665	Crossfire TRT).
459		666
460	=over 4	667	=over 4
461		668
462	=item $attachable->attach ($attachment, key => $value...)	669	=item $attachable->attach ($attachment, key => $value...)
463		670
…		…
665	_attach $registry, $klass, @attach;	872	_attach $registry, $klass, @attach;
666	}	873	}
667		874
668	$obj->{$name} = \%arg;	875	$obj->{$name} = \%arg;
669	} else {	876	} else {
670	warn "object uses attachment '$name' that is not available, postponing.\n";	877	warn "object uses attachment '$name' which is not available, postponing.\n";
671	}	878	}
672		879
673	$obj->{_attachment}{$name} = undef;	880	$obj->{_attachment}{$name} = undef;
674	}	881	}
675		882
…		…
715	";	922	";
716	die if $@;	923	die if $@;
717	}	924	}
718		925
719	our $override;	926	our $override;
720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	927	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
721		928
722	sub override {	929	sub override {
723	$override = 1;	930	$override = 1;
724	@invoke_results = ();	931	@INVOKE_RESULTS = (@_);
725	}	932	}
726		933
727	sub do_invoke {	934	sub do_invoke {
728	my $event = shift;	935	my $event = shift;
729	my $callbacks = shift;	936	my $callbacks = shift;
730		937
731	@invoke_results = ();	938	@INVOKE_RESULTS = ();
732		939
733	local $override;	940	local $override;
734		941
735	for (@$callbacks) {	942	for (@$callbacks) {
736	eval { &{$_->[1]} };	943	eval { &{$_->[1]} };
…		…
753		960
754	Generate an object-specific event with the given arguments.	961	Generate an object-specific event with the given arguments.
755		962
756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	963	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	964	removed in future versions), and there is no public API to access override
758	results (if you must, access C<@cf::invoke_results> directly).	965	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
759		966
760	=back	967	=back
761		968
762	=cut	969	=cut
763		970
764	#############################################################################	971	#############################################################################
765	# object support	972	# object support
		973	#
		974
		975	sub _can_merge {
		976	my ($ob1, $ob2) = @_;
		977
		978	local $Storable::canonical = 1;
		979	my $fob1 = Storable::freeze $ob1;
		980	my $fob2 = Storable::freeze $ob2;
		981
		982	$fob1 eq $fob2
		983	}
766		984
767	sub reattach {	985	sub reattach {
768	# basically do the same as instantiate, without calling instantiate	986	# basically do the same as instantiate, without calling instantiate
769	my ($obj) = @_;	987	my ($obj) = @_;
770		988
…		…
877	warn sprintf "loading %s (%d)\n",	1095	warn sprintf "loading %s (%d)\n",
878	$filename, length $data, scalar @{$av || []};	1096	$filename, length $data, scalar @{$av || []};
879	return ($data, $av);	1097	return ($data, $av);
880	}	1098	}
881		1099
		1100	=head2 COMMAND CALLBACKS
		1101
		1102	=over 4
		1103
		1104	=cut
		1105
882	#############################################################################	1106	#############################################################################
883	# command handling &c	1107	# command handling &c
884		1108
885	=item cf::register_command $name => \&callback($ob,$args);	1109	=item cf::register_command $name => \&callback($ob,$args);
886		1110
…		…
898	push @{ $COMMAND{$name} }, [$caller, $cb];	1122	push @{ $COMMAND{$name} }, [$caller, $cb];
899	}	1123	}
900		1124
901	=item cf::register_extcmd $name => \&callback($pl,$packet);	1125	=item cf::register_extcmd $name => \&callback($pl,$packet);
902		1126
903	Register a callbackf ro execution when the client sends an extcmd packet.	1127	Register a callback for execution when the client sends an (synchronous)
		1128	extcmd packet. Ext commands will be processed in the order they are
		1129	received by the server, like other user commands. The first argument is
		1130	the logged-in player. Ext commands can only be processed after a player
		1131	has logged in successfully.
904		1132
905	If the callback returns something, it is sent back as if reply was being	1133	If the callback returns something, it is sent back as if reply was being
906	called.	1134	called.
907		1135
		1136	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1137
		1138	Register a callback for execution when the client sends an (asynchronous)
		1139	exticmd packet. Exti commands are processed by the server as soon as they
		1140	are received, i.e. out of order w.r.t. other commands. The first argument
		1141	is a client socket. Exti commands can be received anytime, even before
		1142	log-in.
		1143
		1144	If the callback returns something, it is sent back as if reply was being
		1145	called.
		1146
908	=cut	1147	=cut
909		1148
910	sub register_extcmd {	1149	sub register_extcmd {
911	my ($name, $cb) = @_;	1150	my ($name, $cb) = @_;
912		1151
913	$EXTCMD{$name} = $cb;	1152	$EXTCMD{$name} = $cb;
		1153	}
		1154
		1155	sub register_exticmd {
		1156	my ($name, $cb) = @_;
		1157
		1158	$EXTICMD{$name} = $cb;
914	}	1159	}
915		1160
916	cf::player->attach (	1161	cf::player->attach (
917	on_command => sub {	1162	on_command => sub {
918	my ($pl, $name, $params) = @_;	1163	my ($pl, $name, $params) = @_;
…		…
927	cf::override;	1172	cf::override;
928	},	1173	},
929	on_extcmd => sub {	1174	on_extcmd => sub {
930	my ($pl, $buf) = @_;	1175	my ($pl, $buf) = @_;
931		1176
932	my $msg = eval { from_json $buf };	1177	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
933		1178
934	if (ref $msg) {	1179	if (ref $msg) {
935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1180	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
936	if (my %reply = $cb->($pl, $msg)) {	1181	if (my %reply = $cb->($pl, $msg)) {
937	$pl->ext_reply ($msg->{msgid}, %reply);	1182	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
943		1188
944	cf::override;	1189	cf::override;
945	},	1190	},
946	);	1191	);
947		1192
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 {	1193	sub load_extensions {
		1194	cf::sync_job {
		1195	my %todo;
		1196
983	for my $ext (<$LIBDIR/*.ext>) {	1197	for my $path (<$LIBDIR/*.ext>) {
984	next unless -r $ext;	1198	next unless -r $path;
985	eval {	1199
986	load_extension $ext;	1200	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1201	my $base = $1;
		1202	my $pkg = $1;
		1203	$pkg =~ s/[^[:word:]]/_/g;
		1204	$pkg = "ext::$pkg";
		1205
		1206	open my $fh, "<:utf8", $path
		1207	or die "$path: $!";
		1208
		1209	my $source = do { local $/; <$fh> };
		1210
		1211	my %ext = (
		1212	path => $path,
		1213	base => $base,
		1214	pkg => $pkg,
		1215	);
		1216
		1217	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1218	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1219
		1220	$ext{source} =
		1221	"package $pkg; use strict; use utf8;\n"
		1222	. "#line 1 \"$path\"\n{\n"
		1223	. $source
		1224	. "\n};\n1";
		1225
		1226	$todo{$base} = \%ext;
		1227	}
		1228
		1229	my %done;
		1230	while (%todo) {
		1231	my $progress;
		1232
		1233	while (my ($k, $v) = each %todo) {
		1234	for (split /,\s*/, $v->{meta}{depends}) {
		1235	goto skip
		1236	unless exists $done{$_};
		1237	}
		1238
		1239	warn "... loading '$k' into '$v->{pkg}'\n";
		1240
		1241	unless (eval $v->{source}) {
		1242	my $msg = $@ ? "$v->{path}: $@\n"
		1243	: "$v->{base}: extension inactive.\n";
		1244
		1245	if (exists $v->{meta}{mandatory}) {
		1246	warn $msg;
		1247	warn "mandatory extension failed to load, exiting.\n";
		1248	exit 1;
		1249	}
		1250
		1251	warn $msg;
		1252	}
		1253
		1254	$done{$k} = delete $todo{$k};
		1255	push @EXTS, $v->{pkg};
		1256	$progress = 1;
987	1	1257	}
988	} or warn "$ext not loaded: $@";	1258
		1259	skip:
		1260	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1261	unless $progress;
		1262	}
989	}	1263	};
990	}	1264	}
991		1265
992	#############################################################################	1266	#############################################################################
		1267
		1268	=back
993		1269
994	=head2 CORE EXTENSIONS	1270	=head2 CORE EXTENSIONS
995		1271
996	Functions and methods that extend core crossfire objects.	1272	Functions and methods that extend core crossfire objects.
997		1273
…		…
1185	}	1461	}
1186		1462
1187	\@paths	1463	\@paths
1188	}	1464	}
1189		1465
		1466	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1467
		1468	Expand crossfire pod fragments into protocol xml.
		1469
		1470	=cut
		1471
		1472	sub expand_cfpod {
		1473	((my $self), (local $_)) = @_;
		1474
		1475	# escape & and <
		1476	s/&/&amp;/g;
		1477	s/(?<![BIUGH])</&lt;/g;
		1478
		1479	# this is buggy, it needs to properly take care of nested <'s
		1480
		1481	1 while
		1482	# replace B<>, I<>, U<> etc.
		1483	s/B<([^\>]*)>/<b>$1<\/b>/
		1484	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1485	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1486	# replace G<male|female> tags
		1487	|| s{G<([^>|]*)\|([^>]*)>}{
		1488	$self->gender ? $2 : $1
		1489	}ge
		1490	# replace H<hint text>
		1491	|| s{H<([^\>]*)>}
		1492	{
		1493	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1494	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1495	"")
		1496	[$self->{hintmode}]
		1497	}ge;
		1498
		1499	# create single paragraphs (very hackish)
		1500	s/(?<=\S)\n(?=\w)/ /g;
		1501
		1502	# compress some whitespace
		1503	s/\s+\n/\n/g; # ws line-ends
		1504	s/\n\n+/\n/g; # double lines
		1505	s/^\n+//; # beginning lines
		1506	s/\n+$//; # ending lines
		1507
		1508	$_
		1509	}
		1510
		1511	sub hintmode {
		1512	$_[0]{hintmode} = $_[1] if @_ > 1;
		1513	$_[0]{hintmode}
		1514	}
		1515
1190	=item $player->ext_reply ($msgid, %msg)	1516	=item $player->ext_reply ($msgid, %msg)
1191		1517
1192	Sends an ext reply to the player.	1518	Sends an ext reply to the player.
1193		1519
1194	=cut	1520	=cut
1195		1521
1196	sub ext_reply($$%) {	1522	sub ext_reply($$%) {
1197	my ($self, $id, %msg) = @_;	1523	my ($self, $id, %msg) = @_;
1198		1524
1199	$msg{msgid} = $id;	1525	$msg{msgid} = $id;
1200		1526	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1201	$self->send ("ext " . cf::to_json \%msg);
1202	}	1527	}
1203		1528
1204	=item $player->ext_event ($type, %msg)	1529	=item $player->ext_event ($type, %msg)
1205		1530
1206	Sends an ext event to the client.	1531	Sends an ext event to the client.
…		…
1221		1546
1222	package cf::region;	1547	package cf::region;
1223		1548
1224	=item cf::region::find_by_path $path	1549	=item cf::region::find_by_path $path
1225		1550
1226	Tries to decuce the probable region for a map knowing only its path.	1551	Tries to decuce the likely region for a map knowing only its path.
1227		1552
1228	=cut	1553	=cut
1229		1554
1230	sub find_by_path($) {	1555	sub find_by_path($) {
1231	my ($path) = @_;	1556	my ($path) = @_;
1232		1557
1233	my ($match, $specificity);	1558	my ($match, $specificity);
1234		1559
1235	for my $region (list) {	1560	for my $region (list) {
1236	if ($region->match && $path =~ $region->match) {	1561	if ($region->{match} && $path =~ $region->{match}) {
1237	($match, $specificity) = ($region, $region->specificity)	1562	($match, $specificity) = ($region, $region->specificity)
1238	if $region->specificity > $specificity;	1563	if $region->specificity > $specificity;
1239	}	1564	}
1240	}	1565	}
1241		1566
…		…
1361	$self->init; # pass $1 etc.	1686	$self->init; # pass $1 etc.
1362	return $self;	1687	return $self;
1363	}	1688	}
1364	}	1689	}
1365		1690
1366	Carp::carp "unable to resolve path '$path' (base '$base').";	1691	Carp::cluck "unable to resolve path '$path' (base '$base').";
1367	()	1692	()
1368	}	1693	}
1369		1694
1370	sub init {	1695	sub init {
1371	my ($self) = @_;	1696	my ($self) = @_;
…		…
1649		1974
1650	undef $MAP_PREFETCH{$path};	1975	undef $MAP_PREFETCH{$path};
1651	$MAP_PREFETCHER ||= cf::async {	1976	$MAP_PREFETCHER ||= cf::async {
1652	while (%MAP_PREFETCH) {	1977	while (%MAP_PREFETCH) {
1653	for my $path (keys %MAP_PREFETCH) {	1978	for my $path (keys %MAP_PREFETCH) {
1654	my $map = find $path	1979	if (my $map = find $path) {
1655	or next;
1656	$map->load;	1980	$map->load;
		1981	}
1657		1982
1658	delete $MAP_PREFETCH{$path};	1983	delete $MAP_PREFETCH{$path};
1659	}	1984	}
1660	}	1985	}
1661	undef $MAP_PREFETCHER;	1986	undef $MAP_PREFETCHER;
…		…
1779	}	2104	}
1780		2105
1781	=item $maps = cf::map::tmp_maps	2106	=item $maps = cf::map::tmp_maps
1782		2107
1783	Returns an arrayref with all map paths of currently instantiated and saved	2108	Returns an arrayref with all map paths of currently instantiated and saved
1784	maps.	2109	maps. May block.
1785		2110
1786	=cut	2111	=cut
1787		2112
1788	sub tmp_maps() {	2113	sub tmp_maps() {
1789	[	2114	[
1790	map {	2115	map {
1791	utf8::decode $_;	2116	utf8::decode $_;
1792	!/\.(?:pst|meta)$/ && /^$PATH_SEP/o	2117	/\.map$/
1793	? normalise $_	2118	? normalise $_
1794	: ()	2119	: ()
1795	} @{ aio_readdir $TMPDIR or [] }	2120	} @{ aio_readdir $TMPDIR or [] }
1796	]	2121	]
1797	}	2122	}
1798		2123
		2124	=item $maps = cf::map::random_maps
		2125
		2126	Returns an arrayref with all map paths of currently instantiated and saved
		2127	random maps. May block.
		2128
		2129	=cut
		2130
		2131	sub random_maps() {
		2132	[
		2133	map {
		2134	utf8::decode $_;
		2135	/\.map$/
		2136	? normalise "?random/$_"
		2137	: ()
		2138	} @{ aio_readdir $RANDOMDIR or [] }
		2139	]
		2140	}
		2141
1799	=item cf::map::unique_maps	2142	=item cf::map::unique_maps
1800		2143
1801	Returns an arrayref of paths of all shared maps that have	2144	Returns an arrayref of paths of all shared maps that have
1802	instantiated unique items. May block.	2145	instantiated unique items. May block.
1803		2146
…		…
1805		2148
1806	sub unique_maps() {	2149	sub unique_maps() {
1807	[	2150	[
1808	map {	2151	map {
1809	utf8::decode $_;	2152	utf8::decode $_;
1810	!/\.(?:pst|meta)$/ && /^$PATH_SEP/o	2153	/\.map$/
1811	? normalise $_	2154	? normalise $_
1812	: ()	2155	: ()
1813	} @{ aio_readdir $UNIQUEDIR or [] }	2156	} @{ aio_readdir $UNIQUEDIR or [] }
1814	]	2157	]
1815	}	2158	}
…		…
1865		2208
1866	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2209	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1867		2210
1868	if ($self->{record_replies}) {	2211	if ($self->{record_replies}) {
1869	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2212	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2213
1870	} else {	2214	} else {
		2215	my $pl = $self->contr;
		2216
		2217	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2218	my $diag = $pl->{npc_dialog};
		2219	$diag->{pl}->ext_reply (
		2220	$diag->{id},
		2221	msgtype => "reply",
		2222	msg => $diag->{pl}->expand_cfpod ($msg),
		2223	add_topics => []
		2224	);
		2225
		2226	} else {
1871	$msg = $npc->name . " says: $msg" if $npc;	2227	$msg = $npc->name . " says: $msg" if $npc;
1872	$self->message ($msg, $flags);	2228	$self->message ($msg, $flags);
		2229	}
1873	}	2230	}
1874	}	2231	}
1875		2232
1876	=item $player_object->may ("access")	2233	=item $player_object->may ("access")
1877		2234
…		…
1966		2323
1967	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2324	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1968	$self->enter_map ($map, $x, $y);	2325	$self->enter_map ($map, $x, $y);
1969	}	2326	}
1970		2327
1971	=item $player_object->goto ($path, $x, $y[, $check->($map)])	2328	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1972		2329
1973	Moves the player to the given map-path and coordinates by first freezing	2330	Moves the player to the given map-path and coordinates by first freezing
1974	her, loading and preparing them map, calling the provided $check callback	2331	her, loading and preparing them map, calling the provided $check callback
1975	that has to return the map if sucecssful, and then unfreezes the player on	2332	that has to return the map if sucecssful, and then unfreezes the player on
1976	the new (success) or old (failed) map position.	2333	the new (success) or old (failed) map position. In either case, $done will
		2334	be called at the end of this process.
1977		2335
1978	=cut	2336	=cut
1979		2337
1980	our $GOTOGEN;	2338	our $GOTOGEN;
1981		2339
1982	sub cf::object::player::goto {	2340	sub cf::object::player::goto {
1983	my ($self, $path, $x, $y, $check) = @_;	2341	my ($self, $path, $x, $y, $check, $done) = @_;
1984		2342
1985	# do generation counting so two concurrent goto's will be executed in-order	2343	# do generation counting so two concurrent goto's will be executed in-order
1986	my $gen = $self->{_goto_generation} = ++$GOTOGEN;	2344	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1987		2345
1988	$self->enter_link;	2346	$self->enter_link;
…		…
2008		2366
2009	if ($gen == $self->{_goto_generation}) {	2367	if ($gen == $self->{_goto_generation}) {
2010	delete $self->{_goto_generation};	2368	delete $self->{_goto_generation};
2011	$self->leave_link ($map, $x, $y);	2369	$self->leave_link ($map, $x, $y);
2012	}	2370	}
		2371
		2372	$done->() if $done;
2013	})->prio (1);	2373	})->prio (1);
2014	}	2374	}
2015		2375
2016	=item $player_object->enter_exit ($exit_object)	2376	=item $player_object->enter_exit ($exit_object)
2017		2377
…		…
2086	my $hp = $exit->stats->hp;	2446	my $hp = $exit->stats->hp;
2087	my $sp = $exit->stats->sp;	2447	my $sp = $exit->stats->sp;
2088		2448
2089	$self->enter_link;	2449	$self->enter_link;
2090		2450
		2451	# if exit is damned, update players death & WoR home-position
		2452	$self->contr->savebed ($slaying, $hp, $sp)
		2453	if $exit->flag (FLAG_DAMNED);
		2454
2091	(async {	2455	(async {
2092	$self->deactivate_recursive; # just to be sure	2456	$self->deactivate_recursive; # just to be sure
2093	unless (eval {	2457	unless (eval {
2094	$self->goto ($slaying, $hp, $sp);	2458	$self->goto ($slaying, $hp, $sp);
2095		2459
…		…
2122		2486
2123	utf8::encode $text;	2487	utf8::encode $text;
2124	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2488	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2125	}	2489	}
2126		2490
		2491	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2492
		2493	Send a drawinfo or msg packet to the client, formatting the msg for the
		2494	client if neccessary. C<$type> should be a string identifying the type of
		2495	the message, with C<log> being the default. If C<$color> is negative, suppress
		2496	the message unless the client supports the msg packet.
		2497
		2498	=cut
		2499
		2500	sub cf::client::send_msg {
		2501	my ($self, $channel, $msg, $color, @extra) = @_;
		2502
		2503	$msg = $self->pl->expand_cfpod ($msg);
		2504
		2505	$color &= ~cf::NDI_UNIQUE; # just in case...
		2506
		2507	if (ref $channel) {
		2508	# send meta info to client, if not yet sent
		2509	unless (exists $self->{channel}{$channel->{id}}) {
		2510	$self->{channel}{$channel->{id}} = $channel;
		2511	$self->ext_event (channel_info => %$channel);
		2512	}
		2513
		2514	$channel = $channel->{id};
		2515	}
		2516
		2517	return unless @extra || length $msg;
		2518
		2519	if ($self->can_msg) {
		2520	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2521	} else {
		2522	# replace some tags by gcfclient-compatible ones
		2523	for ($msg) {
		2524	1 while
		2525	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2526	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2527	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2528	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2529	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2530	}
		2531
		2532	if ($color >= 0) {
		2533	if (0 && $msg =~ /\[/) {
		2534	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2535	} else {
		2536	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2537	$self->send_packet ("drawinfo $color $msg")
		2538	}
		2539	}
		2540	}
		2541	}
		2542
2127	=item $client->ext_event ($type, %msg)	2543	=item $client->ext_event ($type, %msg)
2128		2544
2129	Sends an exti event to the client.	2545	Sends an ext event to the client.
2130		2546
2131	=cut	2547	=cut
2132		2548
2133	sub cf::client::ext_event($$%) {	2549	sub cf::client::ext_event($$%) {
2134	my ($self, $type, %msg) = @_;	2550	my ($self, $type, %msg) = @_;
2135		2551
		2552	return unless $self->extcmd;
		2553
2136	$msg{msgtype} = "event_$type";	2554	$msg{msgtype} = "event_$type";
2137	$self->send_packet ("ext " . cf::to_json \%msg);	2555	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2138	}	2556	}
2139		2557
2140	=item $success = $client->query ($flags, "text", \&cb)	2558	=item $success = $client->query ($flags, "text", \&cb)
2141		2559
2142	Queues a query to the client, calling the given callback with	2560	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>,	2561	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>.	2562	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2145		2563
2146	Queries can fail, so check the return code. Or don't, as queries will become	2564	Queries can fail, so check the return code. Or don't, as queries will
2147	reliable at some point in the future.	2565	become reliable at some point in the future.
2148		2566
2149	=cut	2567	=cut
2150		2568
2151	sub cf::client::query {	2569	sub cf::client::query {
2152	my ($self, $flags, $text, $cb) = @_;	2570	my ($self, $flags, $text, $cb) = @_;
…		…
2160	utf8::encode $text;	2578	utf8::encode $text;
2161	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2579	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2162		2580
2163	$self->send_packet ($self->{query_queue}[0][0])	2581	$self->send_packet ($self->{query_queue}[0][0])
2164	if @{ $self->{query_queue} } == 1;	2582	if @{ $self->{query_queue} } == 1;
		2583
		2584	1
2165	}	2585	}
2166		2586
2167	cf::client->attach (	2587	cf::client->attach (
		2588	on_connect => sub {
		2589	my ($ns) = @_;
		2590
		2591	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2592	},
2168	on_reply => sub {	2593	on_reply => sub {
2169	my ($ns, $msg) = @_;	2594	my ($ns, $msg) = @_;
2170		2595
2171	# this weird shuffling is so that direct followup queries	2596	# this weird shuffling is so that direct followup queries
2172	# get handled first	2597	# get handled first
…		…
2184	} else {	2609	} else {
2185	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2610	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2186	}	2611	}
2187	}	2612	}
2188	},	2613	},
		2614	on_exticmd => sub {
		2615	my ($ns, $buf) = @_;
		2616
		2617	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2618
		2619	if (ref $msg) {
		2620	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2621	if (my %reply = $cb->($ns, $msg)) {
		2622	$reply{msgid} = $msg->{msgid};
		2623	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2624	}
		2625	}
		2626	} else {
		2627	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2628	}
		2629
		2630	cf::override;
		2631	},
2189	);	2632	);
2190		2633
2191	=item $client->async (\&cb)	2634	=item $client->async (\&cb)
2192		2635
2193	Create a new coroutine, running the specified callback. The coroutine will	2636	Create a new coroutine, running the specified callback. The coroutine will
…		…
2242		2685
2243	=pod	2686	=pod
2244		2687
2245	The following functions and methods are available within a safe environment:	2688	The following functions and methods are available within a safe environment:
2246		2689
2247	cf::object contr pay_amount pay_player map	2690	cf::object
		2691	contr pay_amount pay_player map x y force_find force_add
		2692	insert remove
		2693
2248	cf::object::player player	2694	cf::object::player
2249	cf::player peaceful	2695	player
2250	cf::map trigger	2696
		2697	cf::player
		2698	peaceful
		2699
		2700	cf::map
		2701	trigger
2251		2702
2252	=cut	2703	=cut
2253		2704
2254	for (	2705	for (
2255	["cf::object" => qw(contr pay_amount pay_player map)],	2706	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2707	insert remove)],
2256	["cf::object::player" => qw(player)],	2708	["cf::object::player" => qw(player)],
2257	["cf::player" => qw(peaceful)],	2709	["cf::player" => qw(peaceful)],
2258	["cf::map" => qw(trigger)],	2710	["cf::map" => qw(trigger)],
2259	) {	2711	) {
2260	no strict 'refs';	2712	no strict 'refs';
…		…
2331	=back	2783	=back
2332		2784
2333	=cut	2785	=cut
2334		2786
2335	#############################################################################	2787	#############################################################################
2336
2337	=head2 EXTENSION DATABASE SUPPORT
2338
2339	Crossfire maintains a very simple database for extension use. It can
2340	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2341	convert to/from binary).
2342
2343	The parameter C<$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 $@;
2503	_exit 0;
2504	}
2505	}
2506
2507	#############################################################################
2508	# the server's init and main functions	2788	# the server's init and main functions
2509		2789
2510	sub load_facedata($) {	2790	sub load_facedata($) {
2511	my ($path) = @_;	2791	my ($path) = @_;
2512		2792
…		…
2524	{	2804	{
2525	my $faces = $facedata->{faceinfo};	2805	my $faces = $facedata->{faceinfo};
2526		2806
2527	while (my ($face, $info) = each %$faces) {	2807	while (my ($face, $info) = each %$faces) {
2528	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2808	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2529	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2809	cf::face::set_visibility $idx, $info->{visibility};
		2810	cf::face::set_magicmap $idx, $info->{magicmap};
2530	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2811	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2531	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2812	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2532	Coro::cede;	2813
		2814	cf::cede_to_tick;
2533	}	2815	}
2534		2816
2535	while (my ($face, $info) = each %$faces) {	2817	while (my ($face, $info) = each %$faces) {
2536	next unless $info->{smooth};	2818	next unless $info->{smooth};
2537	my $idx = cf::face::find $face	2819	my $idx = cf::face::find $face
2538	or next;	2820	or next;
2539	if (my $smooth = cf::face::find $info->{smooth}) {	2821	if (my $smooth = cf::face::find $info->{smooth}) {
		2822	cf::face::set_smooth $idx, $smooth;
2540	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2823	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2541	} else {	2824	} else {
2542	warn "smooth face '$info->{smooth}' not found for face '$face'";	2825	warn "smooth face '$info->{smooth}' not found for face '$face'";
2543	}	2826	}
2544	Coro::cede;	2827
		2828	cf::cede_to_tick;
2545	}	2829	}
2546	}	2830	}
2547		2831
2548	{	2832	{
2549	my $anims = $facedata->{animinfo};	2833	my $anims = $facedata->{animinfo};
2550		2834
2551	while (my ($anim, $info) = each %$anims) {	2835	while (my ($anim, $info) = each %$anims) {
2552	cf::anim::set $anim, $info->{frames}, $info->{facings};	2836	cf::anim::set $anim, $info->{frames}, $info->{facings};
2553	Coro::cede;	2837	cf::cede_to_tick;
2554	}	2838	}
2555		2839
2556	cf::anim::invalidate_all; # d'oh	2840	cf::anim::invalidate_all; # d'oh
		2841	}
		2842
		2843	{
		2844	# TODO: for gcfclient pleasure, we should give resources
		2845	# that gcfclient doesn't grok a >10000 face index.
		2846	my $res = $facedata->{resource};
		2847	my $enc = JSON::XS->new->utf8->canonical;
		2848
		2849	while (my ($name, $info) = each %$res) {
		2850	my $meta = $enc->encode ({
		2851	name => $name,
		2852	type => $info->{type},
		2853	copyright => $info->{copyright}, #TODO#
		2854	});
		2855
		2856	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2857
		2858	if ($name =~ /\.jpg$/) {
		2859	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2860	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2861	} else {
		2862	my $data = pack "(w/a*)*", $meta, $info->{data};
		2863	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2864
		2865	cf::face::set_type $idx, 1;
		2866	cf::face::set_data $idx, 0, $data, $chk;
		2867	}
		2868
		2869	cf::cede_to_tick;
		2870	}
2557	}	2871	}
2558		2872
2559	1	2873	1
2560	}	2874	}
2561		2875
2562	sub reload_regions {	2876	sub reload_regions {
2563	load_resource_file "$MAPDIR/regions"	2877	load_resource_file "$MAPDIR/regions"
2564	or die "unable to load regions file\n";	2878	or die "unable to load regions file\n";
		2879
		2880	for (cf::region::list) {
		2881	$_->{match} = qr/$_->{match}/
		2882	if exists $_->{match};
		2883	}
2565	}	2884	}
2566		2885
2567	sub reload_facedata {	2886	sub reload_facedata {
2568	load_facedata "$DATADIR/facedata"	2887	load_facedata "$DATADIR/facedata"
2569	or die "unable to load facedata\n";	2888	or die "unable to load facedata\n";
2570	}	2889	}
2571		2890
2572	sub reload_archetypes {	2891	sub reload_archetypes {
		2892	load_resource_file "$DATADIR/archetypes"
		2893	or die "unable to load archetypes\n";
		2894	#d# NEED to laod twice to resolve forward references
		2895	# this really needs to be done in an extra post-pass
		2896	# (which needs to be synchronous, so solve it differently)
2573	load_resource_file "$DATADIR/archetypes"	2897	load_resource_file "$DATADIR/archetypes"
2574	or die "unable to load archetypes\n";	2898	or die "unable to load archetypes\n";
2575	}	2899	}
2576		2900
2577	sub reload_treasures {	2901	sub reload_treasures {
…		…
2649	},	2973	},
2650	);	2974	);
2651	}	2975	}
2652	}	2976	}
2653		2977
		2978	sub write_runtime {
		2979	my $runtime = "$LOCALDIR/runtime";
		2980
		2981	# first touch the runtime file to show we are still running:
		2982	# the fsync below can take a very very long time.
		2983
		2984	IO::AIO::aio_utime $runtime, undef, undef;
		2985
		2986	my $guard = cf::lock_acquire "write_runtime";
		2987
		2988	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2989	or return;
		2990
		2991	my $value = $cf::RUNTIME + 90 + 10;
		2992	# 10 is the runtime save interval, for a monotonic clock
		2993	# 60 allows for the watchdog to kill the server.
		2994
		2995	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2996	and return;
		2997
		2998	# always fsync - this file is important
		2999	aio_fsync $fh
		3000	and return;
		3001
		3002	# touch it again to show we are up-to-date
		3003	aio_utime $fh, undef, undef;
		3004
		3005	close $fh
		3006	or return;
		3007
		3008	aio_rename "$runtime~", $runtime
		3009	and return;
		3010
		3011	warn "runtime file written.\n";
		3012
		3013	1
		3014	}
		3015
2654	sub emergency_save() {	3016	sub emergency_save() {
2655	my $freeze_guard = cf::freeze_mainloop;	3017	my $freeze_guard = cf::freeze_mainloop;
2656		3018
2657	warn "enter emergency perl save\n";	3019	warn "enter emergency perl save\n";
2658		3020
…		…
2733	%EXT_CORO = ();	3095	%EXT_CORO = ();
2734		3096
2735	warn "removing commands";	3097	warn "removing commands";
2736	%COMMAND = ();	3098	%COMMAND = ();
2737		3099
2738	warn "removing ext commands";	3100	warn "removing ext/exti commands";
2739	%EXTCMD = ();	3101	%EXTCMD = ();
		3102	%EXTICMD = ();
2740		3103
2741	warn "unloading/nuking all extensions";	3104	warn "unloading/nuking all extensions";
2742	for my $pkg (@EXTS) {	3105	for my $pkg (@EXTS) {
2743	warn "... unloading $pkg";	3106	warn "... unloading $pkg";
2744		3107

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