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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.274 by root, Tue Jun 5 13:05:02 2007 UTC vs.
Revision 1.315 by root, Mon Jul 23 17:53:55 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) {
935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1186	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
936	if (my %reply = $cb->($pl, $msg)) {	1187	if (my %reply = $cb->($pl, $msg)) {
937	$pl->ext_reply ($msg->{msgid}, %reply);	1188	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
943		1194
944	cf::override;	1195	cf::override;
945	},	1196	},
946	);	1197	);
947		1198
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 {	1199	sub load_extensions {
		1200	cf::sync_job {
		1201	my %todo;
		1202
983	for my $ext (<$LIBDIR/*.ext>) {	1203	for my $path (<$LIBDIR/*.ext>) {
984	next unless -r $ext;	1204	next unless -r $path;
985	eval {	1205
986	load_extension $ext;	1206	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1207	my $base = $1;
		1208	my $pkg = $1;
		1209	$pkg =~ s/[^[:word:]]/_/g;
		1210	$pkg = "ext::$pkg";
		1211
		1212	open my $fh, "<:utf8", $path
		1213	or die "$path: $!";
		1214
		1215	my $source = do { local $/; <$fh> };
		1216
		1217	my %ext = (
		1218	path => $path,
		1219	base => $base,
		1220	pkg => $pkg,
		1221	);
		1222
		1223	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1224	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1225
		1226	$ext{source} =
		1227	"package $pkg; use strict; use utf8;\n"
		1228	. "#line 1 \"$path\"\n{\n"
		1229	. $source
		1230	. "\n};\n1";
		1231
		1232	$todo{$base} = \%ext;
		1233	}
		1234
		1235	my %done;
		1236	while (%todo) {
		1237	my $progress;
		1238
		1239	while (my ($k, $v) = each %todo) {
		1240	for (split /,\s*/, $v->{meta}{depends}) {
		1241	goto skip
		1242	unless exists $done{$_};
		1243	}
		1244
		1245	warn "... loading '$k' into '$v->{pkg}'\n";
		1246
		1247	unless (eval $v->{source}) {
		1248	my $msg = $@ ? "$v->{path}: $@\n"
		1249	: "$v->{base}: extension inactive.\n";
		1250
		1251	if (exists $v->{meta}{mandatory}) {
		1252	warn $msg;
		1253	warn "mandatory extension failed to load, exiting.\n";
		1254	exit 1;
		1255	}
		1256
		1257	warn $msg;
		1258	}
		1259
		1260	$done{$k} = delete $todo{$k};
		1261	push @EXTS, $v->{pkg};
		1262	$progress = 1;
987	1	1263	}
988	} or warn "$ext not loaded: $@";	1264
		1265	skip:
		1266	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1267	unless $progress;
		1268	}
989	}	1269	};
990	}	1270	}
991		1271
992	#############################################################################	1272	#############################################################################
		1273
		1274	=back
993		1275
994	=head2 CORE EXTENSIONS	1276	=head2 CORE EXTENSIONS
995		1277
996	Functions and methods that extend core crossfire objects.	1278	Functions and methods that extend core crossfire objects.
997		1279
…		…
1185	}	1467	}
1186		1468
1187	\@paths	1469	\@paths
1188	}	1470	}
1189		1471
		1472	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1473
		1474	Expand crossfire pod fragments into protocol xml.
		1475
		1476	=cut
		1477
		1478	sub expand_cfpod {
		1479	((my $self), (local $_)) = @_;
		1480
		1481	# escape & and <
		1482	s/&/&amp;/g;
		1483	s/(?<![BIUGH])</&lt;/g;
		1484
		1485	# this is buggy, it needs to properly take care of nested <'s
		1486
		1487	1 while
		1488	# replace B<>, I<>, U<> etc.
		1489	s/B<([^\>]*)>/<b>$1<\/b>/
		1490	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1491	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1492	# replace G<male|female> tags
		1493	|| s{G<([^>|]*)\|([^>]*)>}{
		1494	$self->gender ? $2 : $1
		1495	}ge
		1496	# replace H<hint text>
		1497	|| s{H<([^\>]*)>}
		1498	{
		1499	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1500	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1501	"")
		1502	[$self->{hintmode}]
		1503	}ge;
		1504
		1505	# create single paragraphs (very hackish)
		1506	s/(?<=\S)\n(?=\w)/ /g;
		1507
		1508	# compress some whitespace
		1509	s/\s+\n/\n/g; # ws line-ends
		1510	s/\n\n+/\n/g; # double lines
		1511	s/^\n+//; # beginning lines
		1512	s/\n+$//; # ending lines
		1513
		1514	$_
		1515	}
		1516
		1517	sub hintmode {
		1518	$_[0]{hintmode} = $_[1] if @_ > 1;
		1519	$_[0]{hintmode}
		1520	}
		1521
1190	=item $player->ext_reply ($msgid, %msg)	1522	=item $player->ext_reply ($msgid, %msg)
1191		1523
1192	Sends an ext reply to the player.	1524	Sends an ext reply to the player.
1193		1525
1194	=cut	1526	=cut
1195		1527
1196	sub ext_reply($$%) {	1528	sub ext_reply($$%) {
1197	my ($self, $id, %msg) = @_;	1529	my ($self, $id, %msg) = @_;
1198		1530
1199	$msg{msgid} = $id;	1531	$msg{msgid} = $id;
1200		1532	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1201	$self->send ("ext " . cf::to_json \%msg);
1202	}	1533	}
1203		1534
1204	=item $player->ext_event ($type, %msg)	1535	=item $player->ext_event ($type, %msg)
1205		1536
1206	Sends an ext event to the client.	1537	Sends an ext event to the client.
…		…
1221		1552
1222	package cf::region;	1553	package cf::region;
1223		1554
1224	=item cf::region::find_by_path $path	1555	=item cf::region::find_by_path $path
1225		1556
1226	Tries to decuce the probable region for a map knowing only its path.	1557	Tries to decuce the likely region for a map knowing only its path.
1227		1558
1228	=cut	1559	=cut
1229		1560
1230	sub find_by_path($) {	1561	sub find_by_path($) {
1231	my ($path) = @_;	1562	my ($path) = @_;
1232		1563
1233	my ($match, $specificity);	1564	my ($match, $specificity);
1234		1565
1235	for my $region (list) {	1566	for my $region (list) {
1236	if ($region->match && $path =~ $region->match) {	1567	if ($region->{match} && $path =~ $region->{match}) {
1237	($match, $specificity) = ($region, $region->specificity)	1568	($match, $specificity) = ($region, $region->specificity)
1238	if $region->specificity > $specificity;	1569	if $region->specificity > $specificity;
1239	}	1570	}
1240	}	1571	}
1241		1572
…		…
1305	my ($self, $merge) = @_;	1636	my ($self, $merge) = @_;
1306		1637
1307	# we have to keep some variables in memory intact	1638	# we have to keep some variables in memory intact
1308	local $self->{path};	1639	local $self->{path};
1309	local $self->{load_path};	1640	local $self->{load_path};
1310	local $self->{deny_save};
1311	local $self->{deny_reset};
1312		1641
1313	$self->SUPER::thawer_merge ($merge);	1642	$self->SUPER::thawer_merge ($merge);
1314	}	1643	}
1315		1644
1316	sub normalise {	1645	sub normalise {
…		…
1363	$self->init; # pass $1 etc.	1692	$self->init; # pass $1 etc.
1364	return $self;	1693	return $self;
1365	}	1694	}
1366	}	1695	}
1367		1696
1368	Carp::carp "unable to resolve path '$path' (base '$base').";	1697	Carp::cluck "unable to resolve path '$path' (base '$base').";
1369	()	1698	()
1370	}	1699	}
1371		1700
1372	sub init {	1701	sub init {
1373	my ($self) = @_;	1702	my ($self) = @_;
…		…
1414	sub change_all_map_light {	1743	sub change_all_map_light {
1415	my ($change) = @_;	1744	my ($change) = @_;
1416		1745
1417	$_->change_map_light ($change)	1746	$_->change_map_light ($change)
1418	for grep $_->outdoor, values %cf::MAP;	1747	for grep $_->outdoor, values %cf::MAP;
		1748	}
		1749
		1750	sub decay_objects {
		1751	my ($self) = @_;
		1752
		1753	return if $self->{deny_reset};
		1754
		1755	$self->do_decay_objects;
1419	}	1756	}
1420		1757
1421	sub unlink_save {	1758	sub unlink_save {
1422	my ($self) = @_;	1759	my ($self) = @_;
1423		1760
…		…
1481	$self->load_header_orig	1818	$self->load_header_orig
1482	or return;	1819	or return;
1483	$self->prepare_orig;	1820	$self->prepare_orig;
1484	}	1821	}
1485		1822
		1823	$self->{deny_reset} = 1
		1824	if $self->no_reset;
		1825
1486	$self->default_region (cf::region::find_by_path $self->{path})	1826	$self->default_region (cf::region::find_by_path $self->{path})
1487	unless $self->default_region;	1827	unless $self->default_region;
1488		1828
1489	1	1829	1
1490	}	1830	}
…		…
1505	$map->{last_save} = $cf::RUNTIME;	1845	$map->{last_save} = $cf::RUNTIME;
1506		1846
1507	$map->load_header	1847	$map->load_header
1508	or return;	1848	or return;
1509		1849
1510	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1850	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1511	# doing this can freeze the server in a sync job, obviously	1851	# doing this can freeze the server in a sync job, obviously
1512	#$cf::WAIT_FOR_TICK->wait;	1852	#$cf::WAIT_FOR_TICK->wait;
1513	$map->reset;	1853	$map->reset;
1514	undef $guard;	1854	undef $guard;
1515	return find $path;	1855	return find $path;
…		…
1582	my ($self, $ob) = @_;	1922	my ($self, $ob) = @_;
1583		1923
1584	return find "~" . $ob->name . "/" . $self->{path}	1924	return find "~" . $ob->name . "/" . $self->{path}
1585	if $self->per_player;	1925	if $self->per_player;
1586		1926
		1927	# return find "?party/" . $ob->name . "/" . $self->{path}
		1928	# if $self->per_party;
		1929
1587	$self	1930	$self
1588	}	1931	}
1589		1932
1590	# find and load all maps in the 3x3 area around a map	1933	# find and load all maps in the 3x3 area around a map
1591	sub load_diag {	1934	sub load_diag {
…		…
1637		1980
1638	undef $MAP_PREFETCH{$path};	1981	undef $MAP_PREFETCH{$path};
1639	$MAP_PREFETCHER ||= cf::async {	1982	$MAP_PREFETCHER ||= cf::async {
1640	while (%MAP_PREFETCH) {	1983	while (%MAP_PREFETCH) {
1641	for my $path (keys %MAP_PREFETCH) {	1984	for my $path (keys %MAP_PREFETCH) {
1642	my $map = find $path	1985	if (my $map = find $path) {
1643	or next;
1644	$map->load;	1986	$map->load;
		1987	}
1645		1988
1646	delete $MAP_PREFETCH{$path};	1989	delete $MAP_PREFETCH{$path};
1647	}	1990	}
1648	}	1991	}
1649	undef $MAP_PREFETCHER;	1992	undef $MAP_PREFETCHER;
…		…
1701		2044
1702	sub reset_at {	2045	sub reset_at {
1703	my ($self) = @_;	2046	my ($self) = @_;
1704		2047
1705	# TODO: safety, remove and allow resettable per-player maps	2048	# TODO: safety, remove and allow resettable per-player maps
1706	return 1e99 if $self->isa ("ext::map_per_player");#d#
1707	return 1e99 if $self->{deny_reset};	2049	return 1e99 if $self->{deny_reset};
1708		2050
1709	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	2051	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1710	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	2052	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1711		2053
…		…
1722	my ($self) = @_;	2064	my ($self) = @_;
1723		2065
1724	my $lock = cf::lock_acquire "map_data:$self->{path}";	2066	my $lock = cf::lock_acquire "map_data:$self->{path}";
1725		2067
1726	return if $self->players;	2068	return if $self->players;
1727	return if $self->isa ("ext::map_per_player");#d#
1728		2069
1729	warn "resetting map ", $self->path;	2070	warn "resetting map ", $self->path;
1730		2071
1731	$self->in_memory (cf::MAP_SWAPPED);	2072	$self->in_memory (cf::MAP_SWAPPED);
1732		2073
…		…
1766	$cf::MAP{$self->path} = $self;	2107	$cf::MAP{$self->path} = $self;
1767		2108
1768	$self->reset; # polite request, might not happen	2109	$self->reset; # polite request, might not happen
1769	}	2110	}
1770		2111
		2112	=item $maps = cf::map::tmp_maps
		2113
		2114	Returns an arrayref with all map paths of currently instantiated and saved
		2115	maps. May block.
		2116
		2117	=cut
		2118
		2119	sub tmp_maps() {
		2120	[
		2121	map {
		2122	utf8::decode $_;
		2123	/\.map$/
		2124	? normalise $_
		2125	: ()
		2126	} @{ aio_readdir $TMPDIR or [] }
		2127	]
		2128	}
		2129
		2130	=item $maps = cf::map::random_maps
		2131
		2132	Returns an arrayref with all map paths of currently instantiated and saved
		2133	random maps. May block.
		2134
		2135	=cut
		2136
		2137	sub random_maps() {
		2138	[
		2139	map {
		2140	utf8::decode $_;
		2141	/\.map$/
		2142	? normalise "?random/$_"
		2143	: ()
		2144	} @{ aio_readdir $RANDOMDIR or [] }
		2145	]
		2146	}
		2147
1771	=item cf::map::unique_maps	2148	=item cf::map::unique_maps
1772		2149
1773	Returns an arrayref of paths of all shared maps that have	2150	Returns an arrayref of paths of all shared maps that have
1774	instantiated unique items. May block.	2151	instantiated unique items. May block.
1775		2152
1776	=cut	2153	=cut
1777		2154
1778	sub unique_maps() {	2155	sub unique_maps() {
1779	my $files = aio_readdir $UNIQUEDIR	2156	[
1780	or return;	2157	map {
1781
1782	my @paths;
1783
1784	for (@$files) {
1785	utf8::decode $_;	2158	utf8::decode $_;
1786	next if /\.pst$/;	2159	/\.map$/
1787	next unless /^$PATH_SEP/o;	2160	? normalise $_
1788		2161	: ()
1789	push @paths, cf::map::normalise $_;	2162	} @{ aio_readdir $UNIQUEDIR or [] }
1790	}	2163	]
1791
1792	\@paths
1793	}	2164	}
1794		2165
1795	package cf;	2166	package cf;
1796		2167
1797	=back	2168	=back
…		…
1843		2214
1844	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2215	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1845		2216
1846	if ($self->{record_replies}) {	2217	if ($self->{record_replies}) {
1847	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2218	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2219
1848	} else {	2220	} else {
		2221	my $pl = $self->contr;
		2222
		2223	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2224	my $diag = $pl->{npc_dialog};
		2225	$diag->{pl}->ext_reply (
		2226	$diag->{id},
		2227	msgtype => "reply",
		2228	msg => $diag->{pl}->expand_cfpod ($msg),
		2229	add_topics => []
		2230	);
		2231
		2232	} else {
1849	$msg = $npc->name . " says: $msg" if $npc;	2233	$msg = $npc->name . " says: $msg" if $npc;
1850	$self->message ($msg, $flags);	2234	$self->message ($msg, $flags);
		2235	}
1851	}	2236	}
1852	}	2237	}
1853		2238
1854	=item $player_object->may ("access")	2239	=item $player_object->may ("access")
1855		2240
…		…
1944		2329
1945	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2330	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1946	$self->enter_map ($map, $x, $y);	2331	$self->enter_map ($map, $x, $y);
1947	}	2332	}
1948		2333
1949	=item $player_object->goto ($path, $x, $y[, $check->($map)])	2334	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1950		2335
1951	Moves the player to the given map-path and coordinates by first freezing	2336	Moves the player to the given map-path and coordinates by first freezing
1952	her, loading and preparing them map, calling the provided $check callback	2337	her, loading and preparing them map, calling the provided $check callback
1953	that has to return the map if sucecssful, and then unfreezes the player on	2338	that has to return the map if sucecssful, and then unfreezes the player on
1954	the new (success) or old (failed) map position.	2339	the new (success) or old (failed) map position. In either case, $done will
		2340	be called at the end of this process.
1955		2341
1956	=cut	2342	=cut
1957		2343
1958	our $GOTOGEN;	2344	our $GOTOGEN;
1959		2345
1960	sub cf::object::player::goto {	2346	sub cf::object::player::goto {
1961	my ($self, $path, $x, $y, $check) = @_;	2347	my ($self, $path, $x, $y, $check, $done) = @_;
1962		2348
1963	# do generation counting so two concurrent goto's will be executed in-order	2349	# do generation counting so two concurrent goto's will be executed in-order
1964	my $gen = $self->{_goto_generation} = ++$GOTOGEN;	2350	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1965		2351
1966	$self->enter_link;	2352	$self->enter_link;
…		…
1986		2372
1987	if ($gen == $self->{_goto_generation}) {	2373	if ($gen == $self->{_goto_generation}) {
1988	delete $self->{_goto_generation};	2374	delete $self->{_goto_generation};
1989	$self->leave_link ($map, $x, $y);	2375	$self->leave_link ($map, $x, $y);
1990	}	2376	}
		2377
		2378	$done->() if $done;
1991	})->prio (1);	2379	})->prio (1);
1992	}	2380	}
1993		2381
1994	=item $player_object->enter_exit ($exit_object)	2382	=item $player_object->enter_exit ($exit_object)
1995		2383
…		…
2064	my $hp = $exit->stats->hp;	2452	my $hp = $exit->stats->hp;
2065	my $sp = $exit->stats->sp;	2453	my $sp = $exit->stats->sp;
2066		2454
2067	$self->enter_link;	2455	$self->enter_link;
2068		2456
		2457	# if exit is damned, update players death & WoR home-position
		2458	$self->contr->savebed ($slaying, $hp, $sp)
		2459	if $exit->flag (FLAG_DAMNED);
		2460
2069	(async {	2461	(async {
2070	$self->deactivate_recursive; # just to be sure	2462	$self->deactivate_recursive; # just to be sure
2071	unless (eval {	2463	unless (eval {
2072	$self->goto ($slaying, $hp, $sp);	2464	$self->goto ($slaying, $hp, $sp);
2073		2465
…		…
2100		2492
2101	utf8::encode $text;	2493	utf8::encode $text;
2102	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2494	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2103	}	2495	}
2104		2496
		2497	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2498
		2499	Send a drawinfo or msg packet to the client, formatting the msg for the
		2500	client if neccessary. C<$type> should be a string identifying the type of
		2501	the message, with C<log> being the default. If C<$color> is negative, suppress
		2502	the message unless the client supports the msg packet.
		2503
		2504	=cut
		2505
		2506	sub cf::client::send_msg {
		2507	my ($self, $channel, $msg, $color, @extra) = @_;
		2508
		2509	$msg = $self->pl->expand_cfpod ($msg);
		2510
		2511	$color &= ~cf::NDI_UNIQUE; # just in case...
		2512
		2513	if (ref $channel) {
		2514	# send meta info to client, if not yet sent
		2515	unless (exists $self->{channel}{$channel->{id}}) {
		2516	$self->{channel}{$channel->{id}} = $channel;
		2517	$self->ext_event (channel_info => %$channel);
		2518	}
		2519
		2520	$channel = $channel->{id};
		2521	}
		2522
		2523	return unless @extra || length $msg;
		2524
		2525	if ($self->can_msg) {
		2526	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2527	} else {
		2528	# replace some tags by gcfclient-compatible ones
		2529	for ($msg) {
		2530	1 while
		2531	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2532	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2533	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2534	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2535	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2536	}
		2537
		2538	if ($color >= 0) {
		2539	if (0 && $msg =~ /\[/) {
		2540	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2541	} else {
		2542	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2543	$self->send_packet ("drawinfo $color $msg")
		2544	}
		2545	}
		2546	}
		2547	}
		2548
2105	=item $client->ext_event ($type, %msg)	2549	=item $client->ext_event ($type, %msg)
2106		2550
2107	Sends an exti event to the client.	2551	Sends an ext event to the client.
2108		2552
2109	=cut	2553	=cut
2110		2554
2111	sub cf::client::ext_event($$%) {	2555	sub cf::client::ext_event($$%) {
2112	my ($self, $type, %msg) = @_;	2556	my ($self, $type, %msg) = @_;
2113		2557
		2558	return unless $self->extcmd;
		2559
2114	$msg{msgtype} = "event_$type";	2560	$msg{msgtype} = "event_$type";
2115	$self->send_packet ("ext " . cf::to_json \%msg);	2561	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2116	}	2562	}
2117		2563
2118	=item $success = $client->query ($flags, "text", \&cb)	2564	=item $success = $client->query ($flags, "text", \&cb)
2119		2565
2120	Queues a query to the client, calling the given callback with	2566	Queues a query to the client, calling the given callback with
2121	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2567	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2122	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2568	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2123		2569
2124	Queries can fail, so check the return code. Or don't, as queries will become	2570	Queries can fail, so check the return code. Or don't, as queries will
2125	reliable at some point in the future.	2571	become reliable at some point in the future.
2126		2572
2127	=cut	2573	=cut
2128		2574
2129	sub cf::client::query {	2575	sub cf::client::query {
2130	my ($self, $flags, $text, $cb) = @_;	2576	my ($self, $flags, $text, $cb) = @_;
…		…
2138	utf8::encode $text;	2584	utf8::encode $text;
2139	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2585	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2140		2586
2141	$self->send_packet ($self->{query_queue}[0][0])	2587	$self->send_packet ($self->{query_queue}[0][0])
2142	if @{ $self->{query_queue} } == 1;	2588	if @{ $self->{query_queue} } == 1;
		2589
		2590	1
2143	}	2591	}
2144		2592
2145	cf::client->attach (	2593	cf::client->attach (
		2594	on_connect => sub {
		2595	my ($ns) = @_;
		2596
		2597	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2598	},
2146	on_reply => sub {	2599	on_reply => sub {
2147	my ($ns, $msg) = @_;	2600	my ($ns, $msg) = @_;
2148		2601
2149	# this weird shuffling is so that direct followup queries	2602	# this weird shuffling is so that direct followup queries
2150	# get handled first	2603	# get handled first
…		…
2162	} else {	2615	} else {
2163	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2616	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2164	}	2617	}
2165	}	2618	}
2166	},	2619	},
		2620	on_exticmd => sub {
		2621	my ($ns, $buf) = @_;
		2622
		2623	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2624
		2625	if (ref $msg) {
		2626	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2627	if (my %reply = $cb->($ns, $msg)) {
		2628	$reply{msgid} = $msg->{msgid};
		2629	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2630	}
		2631	}
		2632	} else {
		2633	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2634	}
		2635
		2636	cf::override;
		2637	},
2167	);	2638	);
2168		2639
2169	=item $client->async (\&cb)	2640	=item $client->async (\&cb)
2170		2641
2171	Create a new coroutine, running the specified callback. The coroutine will	2642	Create a new coroutine, running the specified callback. The coroutine will
…		…
2220		2691
2221	=pod	2692	=pod
2222		2693
2223	The following functions and methods are available within a safe environment:	2694	The following functions and methods are available within a safe environment:
2224		2695
2225	cf::object contr pay_amount pay_player map	2696	cf::object
		2697	contr pay_amount pay_player map x y force_find force_add
		2698	insert remove
		2699
2226	cf::object::player player	2700	cf::object::player
2227	cf::player peaceful	2701	player
2228	cf::map trigger	2702
		2703	cf::player
		2704	peaceful
		2705
		2706	cf::map
		2707	trigger
2229		2708
2230	=cut	2709	=cut
2231		2710
2232	for (	2711	for (
2233	["cf::object" => qw(contr pay_amount pay_player map)],	2712	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2713	insert remove)],
2234	["cf::object::player" => qw(player)],	2714	["cf::object::player" => qw(player)],
2235	["cf::player" => qw(peaceful)],	2715	["cf::player" => qw(peaceful)],
2236	["cf::map" => qw(trigger)],	2716	["cf::map" => qw(trigger)],
2237	) {	2717	) {
2238	no strict 'refs';	2718	no strict 'refs';
…		…
2309	=back	2789	=back
2310		2790
2311	=cut	2791	=cut
2312		2792
2313	#############################################################################	2793	#############################################################################
2314
2315	=head2 EXTENSION DATABASE SUPPORT
2316
2317	Crossfire maintains a very simple database for extension use. It can
2318	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2319	convert to/from binary).
2320
2321	The parameter C<$family> should best start with the name of the extension
2322	using it, it should be unique.
2323
2324	=over 4
2325
2326	=item $value = cf::db_get $family => $key
2327
2328	Returns a single value from the database.
2329
2330	=item cf::db_put $family => $key => $value
2331
2332	Stores the given C<$value> in the family.
2333
2334	=cut
2335
2336	our $DB;
2337
2338	sub db_init {
2339	unless ($DB) {
2340	$DB = BDB::db_create $DB_ENV;
2341
2342	cf::sync_job {
2343	eval {
2344	$DB->set_flags (BDB::CHKSUM);
2345
2346	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2347	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2348	cf::cleanup "db_open(db): $!" if $!;
2349	};
2350	cf::cleanup "db_open(db): $@" if $@;
2351	};
2352	}
2353	}
2354
2355	sub db_get($$) {
2356	my $key = "$_[0]/$_[1]";
2357
2358	cf::sync_job {
2359	BDB::db_get $DB, undef, $key, my $data;
2360
2361	$! ? ()
2362	: $data
2363	}
2364	}
2365
2366	sub db_put($$$) {
2367	BDB::dbreq_pri 4;
2368	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2369	}
2370
2371	=item cf::cache $id => [$paths...], $processversion => $process
2372
2373	Generic caching function that returns the value of the resource $id,
2374	caching and regenerating as required.
2375
2376	This function can block.
2377
2378	=cut
2379
2380	sub cache {
2381	my ($id, $src, $processversion, $process) = @_;
2382
2383	my $meta =
2384	join "\x00",
2385	$processversion,
2386	map {
2387	aio_stat $_
2388	and Carp::croak "$_: $!";
2389
2390	($_, (stat _)[7,9])
2391	} @$src;
2392
2393	my $dbmeta = db_get cache => "$id/meta";
2394	if ($dbmeta ne $meta) {
2395	# changed, we may need to process
2396
2397	my @data;
2398	my $md5;
2399
2400	for (0 .. $#$src) {
2401	0 <= aio_load $src->[$_], $data[$_]
2402	or Carp::croak "$src->[$_]: $!";
2403	}
2404
2405	# if processing is expensive, check
2406	# checksum first
2407	if (1) {
2408	$md5 =
2409	join "\x00",
2410	$processversion,
2411	map {
2412	Coro::cede;
2413	($src->[$_], Digest::MD5::md5_hex $data[$_])
2414	} 0.. $#$src;
2415
2416
2417	my $dbmd5 = db_get cache => "$id/md5";
2418	if ($dbmd5 eq $md5) {
2419	db_put cache => "$id/meta", $meta;
2420
2421	return db_get cache => "$id/data";
2422	}
2423	}
2424
2425	my $t1 = Time::HiRes::time;
2426	my $data = $process->(\@data);
2427	my $t2 = Time::HiRes::time;
2428
2429	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2430
2431	db_put cache => "$id/data", $data;
2432	db_put cache => "$id/md5" , $md5;
2433	db_put cache => "$id/meta", $meta;
2434
2435	return $data;
2436	}
2437
2438	db_get cache => "$id/data"
2439	}
2440
2441	=item fork_call { }, $args
2442
2443	Executes the given code block with the given arguments in a seperate
2444	process, returning the results. Everything must be serialisable with
2445	Coro::Storable. May, of course, block. Note that the executed sub may
2446	never block itself or use any form of Event handling.
2447
2448	=cut
2449
2450	sub fork_call(&@) {
2451	my ($cb, @args) = @_;
2452
2453	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2454	# or die "socketpair: $!";
2455	pipe my $fh1, my $fh2
2456	or die "pipe: $!";
2457
2458	if (my $pid = fork) {
2459	close $fh2;
2460
2461	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2462	$res = Coro::Storable::thaw $res;
2463
2464	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2465
2466	die $$res unless "ARRAY" eq ref $res;
2467
2468	return wantarray ? @$res : $res->[-1];
2469	} else {
2470	reset_signals;
2471	local $SIG{__WARN__};
2472	local $SIG{__DIE__};
2473	eval {
2474	close $fh1;
2475
2476	my @res = eval { $cb->(@args) };
2477	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2478	};
2479
2480	warn $@ if $@;
2481	_exit 0;
2482	}
2483	}
2484
2485	#############################################################################
2486	# the server's init and main functions	2794	# the server's init and main functions
2487		2795
2488	sub load_facedata($) {	2796	sub load_facedata($) {
2489	my ($path) = @_;	2797	my ($path) = @_;
2490		2798
…		…
2502	{	2810	{
2503	my $faces = $facedata->{faceinfo};	2811	my $faces = $facedata->{faceinfo};
2504		2812
2505	while (my ($face, $info) = each %$faces) {	2813	while (my ($face, $info) = each %$faces) {
2506	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2814	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2507	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2815	cf::face::set_visibility $idx, $info->{visibility};
		2816	cf::face::set_magicmap $idx, $info->{magicmap};
2508	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2817	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2509	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2818	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2510	Coro::cede;	2819
		2820	cf::cede_to_tick;
2511	}	2821	}
2512		2822
2513	while (my ($face, $info) = each %$faces) {	2823	while (my ($face, $info) = each %$faces) {
2514	next unless $info->{smooth};	2824	next unless $info->{smooth};
2515	my $idx = cf::face::find $face	2825	my $idx = cf::face::find $face
2516	or next;	2826	or next;
2517	if (my $smooth = cf::face::find $info->{smooth}) {	2827	if (my $smooth = cf::face::find $info->{smooth}) {
		2828	cf::face::set_smooth $idx, $smooth;
2518	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2829	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2519	} else {	2830	} else {
2520	warn "smooth face '$info->{smooth}' not found for face '$face'";	2831	warn "smooth face '$info->{smooth}' not found for face '$face'";
2521	}	2832	}
2522	Coro::cede;	2833
		2834	cf::cede_to_tick;
2523	}	2835	}
2524	}	2836	}
2525		2837
2526	{	2838	{
2527	my $anims = $facedata->{animinfo};	2839	my $anims = $facedata->{animinfo};
2528		2840
2529	while (my ($anim, $info) = each %$anims) {	2841	while (my ($anim, $info) = each %$anims) {
2530	cf::anim::set $anim, $info->{frames}, $info->{facings};	2842	cf::anim::set $anim, $info->{frames}, $info->{facings};
2531	Coro::cede;	2843	cf::cede_to_tick;
2532	}	2844	}
2533		2845
2534	cf::anim::invalidate_all; # d'oh	2846	cf::anim::invalidate_all; # d'oh
		2847	}
		2848
		2849	{
		2850	# TODO: for gcfclient pleasure, we should give resources
		2851	# that gcfclient doesn't grok a >10000 face index.
		2852	my $res = $facedata->{resource};
		2853	my $enc = JSON::XS->new->utf8->canonical;
		2854
		2855	while (my ($name, $info) = each %$res) {
		2856	my $meta = $enc->encode ({
		2857	name => $name,
		2858	type => $info->{type},
		2859	copyright => $info->{copyright}, #TODO#
		2860	});
		2861
		2862	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2863
		2864	if ($name =~ /\.jpg$/) {
		2865	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2866	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2867	} else {
		2868	my $data = pack "(w/a*)*", $meta, $info->{data};
		2869	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2870
		2871	cf::face::set_type $idx, 1;
		2872	cf::face::set_data $idx, 0, $data, $chk;
		2873	}
		2874
		2875	cf::cede_to_tick;
		2876	}
2535	}	2877	}
2536		2878
2537	1	2879	1
2538	}	2880	}
2539		2881
2540	sub reload_regions {	2882	sub reload_regions {
2541	load_resource_file "$MAPDIR/regions"	2883	load_resource_file "$MAPDIR/regions"
2542	or die "unable to load regions file\n";	2884	or die "unable to load regions file\n";
		2885
		2886	for (cf::region::list) {
		2887	$_->{match} = qr/$_->{match}/
		2888	if exists $_->{match};
		2889	}
2543	}	2890	}
2544		2891
2545	sub reload_facedata {	2892	sub reload_facedata {
2546	load_facedata "$DATADIR/facedata"	2893	load_facedata "$DATADIR/facedata"
2547	or die "unable to load facedata\n";	2894	or die "unable to load facedata\n";
2548	}	2895	}
2549		2896
2550	sub reload_archetypes {	2897	sub reload_archetypes {
		2898	load_resource_file "$DATADIR/archetypes"
		2899	or die "unable to load archetypes\n";
		2900	#d# NEED to laod twice to resolve forward references
		2901	# this really needs to be done in an extra post-pass
		2902	# (which needs to be synchronous, so solve it differently)
2551	load_resource_file "$DATADIR/archetypes"	2903	load_resource_file "$DATADIR/archetypes"
2552	or die "unable to load archetypes\n";	2904	or die "unable to load archetypes\n";
2553	}	2905	}
2554		2906
2555	sub reload_treasures {	2907	sub reload_treasures {
…		…
2627	},	2979	},
2628	);	2980	);
2629	}	2981	}
2630	}	2982	}
2631		2983
		2984	sub write_runtime {
		2985	my $runtime = "$LOCALDIR/runtime";
		2986
		2987	# first touch the runtime file to show we are still running:
		2988	# the fsync below can take a very very long time.
		2989
		2990	IO::AIO::aio_utime $runtime, undef, undef;
		2991
		2992	my $guard = cf::lock_acquire "write_runtime";
		2993
		2994	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2995	or return;
		2996
		2997	my $value = $cf::RUNTIME + 90 + 10;
		2998	# 10 is the runtime save interval, for a monotonic clock
		2999	# 60 allows for the watchdog to kill the server.
		3000
		3001	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3002	and return;
		3003
		3004	# always fsync - this file is important
		3005	aio_fsync $fh
		3006	and return;
		3007
		3008	# touch it again to show we are up-to-date
		3009	aio_utime $fh, undef, undef;
		3010
		3011	close $fh
		3012	or return;
		3013
		3014	aio_rename "$runtime~", $runtime
		3015	and return;
		3016
		3017	warn "runtime file written.\n";
		3018
		3019	1
		3020	}
		3021
2632	sub emergency_save() {	3022	sub emergency_save() {
2633	my $freeze_guard = cf::freeze_mainloop;	3023	my $freeze_guard = cf::freeze_mainloop;
2634		3024
2635	warn "enter emergency perl save\n";	3025	warn "enter emergency perl save\n";
2636		3026
…		…
2711	%EXT_CORO = ();	3101	%EXT_CORO = ();
2712		3102
2713	warn "removing commands";	3103	warn "removing commands";
2714	%COMMAND = ();	3104	%COMMAND = ();
2715		3105
2716	warn "removing ext commands";	3106	warn "removing ext/exti commands";
2717	%EXTCMD = ();	3107	%EXTCMD = ();
		3108	%EXTICMD = ();
2718		3109
2719	warn "unloading/nuking all extensions";	3110	warn "unloading/nuking all extensions";
2720	for my $pkg (@EXTS) {	3111	for my $pkg (@EXTS) {
2721	warn "... unloading $pkg";	3112	warn "... unloading $pkg";
2722		3113

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