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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.257 by root, Sat Apr 21 17:34:24 2007 UTC vs.
Revision 1.302 by root, Tue Jul 10 16:23:59 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;
…		…
90	our $LINK_MAP; # the special {link} map, which is always available	93	our $LINK_MAP; # the special {link} map, which is always available
91		94
92	# used to convert map paths into valid unix filenames by replacing / by ∕	95	# used to convert map paths into valid unix filenames by replacing / by ∕
93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
		101
95	binmode STDOUT;	102	binmode STDOUT;
96	binmode STDERR;	103	binmode STDERR;
97		104
98	# read virtual server time, if available	105	# read virtual server time, if available
99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {	106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
…		…
139		146
140	=item $cf::TICK	147	=item $cf::TICK
141		148
142	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
143		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
		160
144	=item %cf::CFG	161	=item %cf::CFG
145		162
146	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
147	from wherever your confdir points to.	164	from wherever your confdir points to.
148		165
…		…
173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	190	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	191	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	192	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	193	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	194	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		195	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	196	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179		197
180	# we bless all objects into (empty) derived classes to force a method lookup	198	# we bless all objects into (empty) derived classes to force a method lookup
181	# within the Safe compartment.	199	# within the Safe compartment.
182	for my $pkg (qw(	200	for my $pkg (qw(
183	cf::global cf::attachable	201	cf::global cf::attachable
…		…
191	}	209	}
192		210
193	$Event::DIED = sub {	211	$Event::DIED = sub {
194	warn "error in event callback: @_";	212	warn "error in event callback: @_";
195	};	213	};
		214
		215	#############################################################################
196		216
197	=head2 UTILITY FUNCTIONS	217	=head2 UTILITY FUNCTIONS
198		218
199	=over 4	219	=over 4
200		220
…		…
219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	239	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
220	$d	240	$d
221	} || "[unable to dump $_[0]: '$@']";	241	} || "[unable to dump $_[0]: '$@']";
222	}	242	}
223		243
224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
225
226	=item $ref = cf::from_json $json	244	=item $ref = cf::from_json $json
227		245
228	Converts a JSON string into the corresponding perl data structure.	246	Converts a JSON string into the corresponding perl data structure.
229		247
230	=item $json = cf::to_json $ref	248	=item $json = cf::to_json $ref
231		249
232	Converts a perl data structure into its JSON representation.	250	Converts a perl data structure into its JSON representation.
		251
		252	=cut
		253
		254	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		255
		256	sub to_json ($) { $json_coder->encode ($_[0]) }
		257	sub from_json ($) { $json_coder->decode ($_[0]) }
233		258
234	=item cf::lock_wait $string	259	=item cf::lock_wait $string
235		260
236	Wait until the given lock is available. See cf::lock_acquire.	261	Wait until the given lock is available. See cf::lock_acquire.
237		262
…		…
303		328
304	BEGIN { *async = \&Coro::async_pool }	329	BEGIN { *async = \&Coro::async_pool }
305		330
306	=item cf::sync_job { BLOCK }	331	=item cf::sync_job { BLOCK }
307		332
308	The design of crossfire+ requires that the main coro ($Coro::main) is	333	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
309	always able to handle events or runnable, as crossfire+ is only partly	334	is always able to handle events or runnable, as Crossfire TRT is only
310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	335	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		336	acceptable.
311		337
312	If it must be done, put the blocking parts into C<sync_job>. This will run	338	If it must be done, put the blocking parts into C<sync_job>. This will run
313	the given BLOCK in another coroutine while waiting for the result. The	339	the given BLOCK in another coroutine while waiting for the result. The
314	server will be frozen during this time, so the block should either finish	340	server will be frozen during this time, so the block should either finish
315	fast or be very important.	341	fast or be very important.
…		…
318		344
319	sub sync_job(&) {	345	sub sync_job(&) {
320	my ($job) = @_;	346	my ($job) = @_;
321		347
322	if ($Coro::current == $Coro::main) {	348	if ($Coro::current == $Coro::main) {
		349	my $time = Event::time;
		350
323	# this is the main coro, too bad, we have to block	351	# this is the main coro, too bad, we have to block
324	# till the operation succeeds, freezing the server :/	352	# till the operation succeeds, freezing the server :/
325		353
326	# TODO: use suspend/resume instead	354	# TODO: use suspend/resume instead
327	# (but this is cancel-safe)	355	# (but this is cancel-safe)
…		…
338		366
339	while ($busy) {	367	while ($busy) {
340	Coro::cede or Event::one_event;	368	Coro::cede or Event::one_event;
341	}	369	}
342		370
		371	$time = Event::time - $time;
		372
		373	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		374	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		375
		376	$tick_start += $time; # do not account sync jobs to server load
		377
343	wantarray ? @res : $res[0]	378	wantarray ? @res : $res[0]
344	} else {	379	} else {
345	# we are in another coroutine, how wonderful, everything just works	380	# we are in another coroutine, how wonderful, everything just works
346		381
347	$job->()	382	$job->()
…		…
366	$EXT_CORO{$coro+0} = $coro;	401	$EXT_CORO{$coro+0} = $coro;
367		402
368	$coro	403	$coro
369	}	404	}
370		405
371	sub write_runtime {	406	=item fork_call { }, $args
372	my $guard = cf::lock_acquire "write_runtime";
373		407
374	my $runtime = "$LOCALDIR/runtime";	408	Executes the given code block with the given arguments in a seperate
		409	process, returning the results. Everything must be serialisable with
		410	Coro::Storable. May, of course, block. Note that the executed sub may
		411	never block itself or use any form of Event handling.
375		412
376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	413	=cut
377	or return;
378		414
379	my $value = $cf::RUNTIME + 90 + 10;	415	sub _store_scalar {
380	# 10 is the runtime save interval, for a monotonic clock	416	open my $fh, ">", \my $buf
381	# 60 allows for the watchdog to kill the server.	417	or die "fork_call: cannot open fh-to-buf in child : $!";
382		418	Storable::store_fd $_[0], $fh;
383	(aio_write $fh, 0, (length $value), $value, 0) <= 0
384	and return;
385
386	# always fsync - this file is important
387	aio_fsync $fh
388	and return;
389
390	close $fh	419	close $fh;
391	or return;
392		420
393	aio_rename "$runtime~", $runtime	421	$buf
394	and return;	422	}
395		423
		424	sub fork_call(&@) {
		425	my ($cb, @args) = @_;
		426
		427	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		428	# or die "socketpair: $!";
		429	pipe my $fh1, my $fh2
		430	or die "pipe: $!";
		431
		432	if (my $pid = fork) {
		433	close $fh2;
		434
		435	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		436	warn "pst<$res>" unless $res =~ /^pst/;
		437	$res = Coro::Storable::thaw $res;
		438
		439	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		440
		441	Carp::confess $$res unless "ARRAY" eq ref $res;
		442
		443	return wantarray ? @$res : $res->[-1];
		444	} else {
		445	reset_signals;
		446	local $SIG{__WARN__};
		447	local $SIG{__DIE__};
		448	# just in case, this hack effectively disables event
		449	# in the child. cleaner and slower would be canceling all watchers,
		450	# but this works for the time being.
		451	local $Coro::idle;
		452	$Coro::current->prio (Coro::PRIO_MAX);
		453
		454	eval {
		455	close $fh1;
		456
		457	my @res = eval { $cb->(@args) };
		458
		459	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		460	close $fh2;
		461	};
		462
		463	warn $@ if $@;
		464	_exit 0;
396	1	465	}
		466	}
		467
		468	=item $value = cf::db_get $family => $key
		469
		470	Returns a single value from the environment database.
		471
		472	=item cf::db_put $family => $key => $value
		473
		474	Stores the given C<$value> in the family. It can currently store binary
		475	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		476
		477	=cut
		478
		479	our $DB;
		480
		481	sub db_init {
		482	unless ($DB) {
		483	$DB = BDB::db_create $DB_ENV;
		484
		485	cf::sync_job {
		486	eval {
		487	$DB->set_flags (BDB::CHKSUM);
		488
		489	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		490	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		491	cf::cleanup "db_open(db): $!" if $!;
		492	};
		493	cf::cleanup "db_open(db): $@" if $@;
		494	};
		495	}
		496	}
		497
		498	sub db_get($$) {
		499	my $key = "$_[0]/$_[1]";
		500
		501	cf::sync_job {
		502	BDB::db_get $DB, undef, $key, my $data;
		503
		504	$! ? ()
		505	: $data
		506	}
		507	}
		508
		509	sub db_put($$$) {
		510	BDB::dbreq_pri 4;
		511	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		512	}
		513
		514	=item cf::cache $id => [$paths...], $processversion => $process
		515
		516	Generic caching function that returns the value of the resource $id,
		517	caching and regenerating as required.
		518
		519	This function can block.
		520
		521	=cut
		522
		523	sub cache {
		524	my ($id, $src, $processversion, $process) = @_;
		525
		526	my $meta =
		527	join "\x00",
		528	$processversion,
		529	map {
		530	aio_stat $_
		531	and Carp::croak "$_: $!";
		532
		533	($_, (stat _)[7,9])
		534	} @$src;
		535
		536	my $dbmeta = db_get cache => "$id/meta";
		537	if ($dbmeta ne $meta) {
		538	# changed, we may need to process
		539
		540	my @data;
		541	my $md5;
		542
		543	for (0 .. $#$src) {
		544	0 <= aio_load $src->[$_], $data[$_]
		545	or Carp::croak "$src->[$_]: $!";
		546	}
		547
		548	# if processing is expensive, check
		549	# checksum first
		550	if (1) {
		551	$md5 =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	Coro::cede;
		556	($src->[$_], Digest::MD5::md5_hex $data[$_])
		557	} 0.. $#$src;
		558
		559
		560	my $dbmd5 = db_get cache => "$id/md5";
		561	if ($dbmd5 eq $md5) {
		562	db_put cache => "$id/meta", $meta;
		563
		564	return db_get cache => "$id/data";
		565	}
		566	}
		567
		568	my $t1 = Time::HiRes::time;
		569	my $data = $process->(\@data);
		570	my $t2 = Time::HiRes::time;
		571
		572	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		573
		574	db_put cache => "$id/data", $data;
		575	db_put cache => "$id/md5" , $md5;
		576	db_put cache => "$id/meta", $meta;
		577
		578	return $data;
		579	}
		580
		581	db_get cache => "$id/data"
397	}	582	}
398		583
399	=item cf::datalog type => key => value, ...	584	=item cf::datalog type => key => value, ...
400		585
401	Log a datalog packet of the given type with the given key-value pairs.	586	Log a datalog packet of the given type with the given key-value pairs.
…		…
419	attach callbacks/event handlers (a collection of which is called an "attachment")	604	attach callbacks/event handlers (a collection of which is called an "attachment")
420	to it. All such attachable objects support the following methods.	605	to it. All such attachable objects support the following methods.
421		606
422	In the following description, CLASS can be any of C<global>, C<object>	607	In the following description, CLASS can be any of C<global>, C<object>
423	C<player>, C<client> or C<map> (i.e. the attachable objects in	608	C<player>, C<client> or C<map> (i.e. the attachable objects in
424	crossfire+).	609	Crossfire TRT).
425		610
426	=over 4	611	=over 4
427		612
428	=item $attachable->attach ($attachment, key => $value...)	613	=item $attachable->attach ($attachment, key => $value...)
429		614
…		…
592	$registry = $CB_TYPE[$object_type] ||= [];	777	$registry = $CB_TYPE[$object_type] ||= [];
593		778
594	} elsif ($type eq "subtype") {	779	} elsif ($type eq "subtype") {
595	defined $object_type or Carp::croak "subtype specified without type";	780	defined $object_type or Carp::croak "subtype specified without type";
596	my $object_subtype = shift @arg;	781	my $object_subtype = shift @arg;
597	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	782	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
598		783
599	} elsif ($type eq "package") {	784	} elsif ($type eq "package") {
600	my $pkg = shift @arg;	785	my $pkg = shift @arg;
601		786
602	while (my ($name, $id) = each %cb_id) {	787	while (my ($name, $id) = each %cb_id) {
…		…
631	_attach $registry, $klass, @attach;	816	_attach $registry, $klass, @attach;
632	}	817	}
633		818
634	$obj->{$name} = \%arg;	819	$obj->{$name} = \%arg;
635	} else {	820	} else {
636	warn "object uses attachment '$name' that is not available, postponing.\n";	821	warn "object uses attachment '$name' which is not available, postponing.\n";
637	}	822	}
638		823
639	$obj->{_attachment}{$name} = undef;	824	$obj->{_attachment}{$name} = undef;
640	}	825	}
641		826
…		…
643	if (ref $_[0]) {	828	if (ref $_[0]) {
644	_object_attach @_;	829	_object_attach @_;
645	} else {	830	} else {
646	_attach shift->_attach_registry, @_;	831	_attach shift->_attach_registry, @_;
647	}	832	}
		833	_recalc_want;
648	};	834	};
649		835
650	# all those should be optimised	836	# all those should be optimised
651	sub cf::attachable::detach {	837	sub cf::attachable::detach {
652	my ($obj, $name) = @_;	838	my ($obj, $name) = @_;
…		…
655	delete $obj->{_attachment}{$name};	841	delete $obj->{_attachment}{$name};
656	reattach ($obj);	842	reattach ($obj);
657	} else {	843	} else {
658	Carp::croak "cannot, currently, detach class attachments";	844	Carp::croak "cannot, currently, detach class attachments";
659	}	845	}
		846	_recalc_want;
660	};	847	};
661		848
662	sub cf::attachable::attached {	849	sub cf::attachable::attached {
663	my ($obj, $name) = @_;	850	my ($obj, $name) = @_;
664		851
…		…
837	or return;	1024	or return;
838	$av = eval { (Storable::thaw $av)->{objs} };	1025	$av = eval { (Storable::thaw $av)->{objs} };
839	}	1026	}
840		1027
841	warn sprintf "loading %s (%d)\n",	1028	warn sprintf "loading %s (%d)\n",
842	$filename, length $data, scalar @{$av || []};#d#	1029	$filename, length $data, scalar @{$av || []};
843	return ($data, $av);	1030	return ($data, $av);
844	}	1031	}
		1032
		1033	=head2 COMMAND CALLBACKS
		1034
		1035	=over 4
		1036
		1037	=cut
845		1038
846	#############################################################################	1039	#############################################################################
847	# command handling &c	1040	# command handling &c
848		1041
849	=item cf::register_command $name => \&callback($ob,$args);	1042	=item cf::register_command $name => \&callback($ob,$args);
…		…
862	push @{ $COMMAND{$name} }, [$caller, $cb];	1055	push @{ $COMMAND{$name} }, [$caller, $cb];
863	}	1056	}
864		1057
865	=item cf::register_extcmd $name => \&callback($pl,$packet);	1058	=item cf::register_extcmd $name => \&callback($pl,$packet);
866		1059
867	Register a callbackf ro execution when the client sends an extcmd packet.	1060	Register a callback for execution when the client sends an (synchronous)
		1061	extcmd packet. Ext commands will be processed in the order they are
		1062	received by the server, like other user commands. The first argument is
		1063	the logged-in player. Ext commands can only be processed after a player
		1064	has logged in successfully.
868		1065
869	If the callback returns something, it is sent back as if reply was being	1066	If the callback returns something, it is sent back as if reply was being
870	called.	1067	called.
871		1068
		1069	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1070
		1071	Register a callback for execution when the client sends an (asynchronous)
		1072	exticmd packet. Exti commands are processed by the server as soon as they
		1073	are received, i.e. out of order w.r.t. other commands. The first argument
		1074	is a client socket. Exti commands can be received anytime, even before
		1075	log-in.
		1076
		1077	If the callback returns something, it is sent back as if reply was being
		1078	called.
		1079
872	=cut	1080	=cut
873		1081
874	sub register_extcmd {	1082	sub register_extcmd {
875	my ($name, $cb) = @_;	1083	my ($name, $cb) = @_;
876		1084
877	$EXTCMD{$name} = $cb;	1085	$EXTCMD{$name} = $cb;
		1086	}
		1087
		1088	sub register_exticmd {
		1089	my ($name, $cb) = @_;
		1090
		1091	$EXTICMD{$name} = $cb;
878	}	1092	}
879		1093
880	cf::player->attach (	1094	cf::player->attach (
881	on_command => sub {	1095	on_command => sub {
882	my ($pl, $name, $params) = @_;	1096	my ($pl, $name, $params) = @_;
…		…
891	cf::override;	1105	cf::override;
892	},	1106	},
893	on_extcmd => sub {	1107	on_extcmd => sub {
894	my ($pl, $buf) = @_;	1108	my ($pl, $buf) = @_;
895		1109
896	my $msg = eval { from_json $buf };	1110	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
897		1111
898	if (ref $msg) {	1112	if (ref $msg) {
899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1113	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
900	if (my %reply = $cb->($pl, $msg)) {	1114	if (my %reply = $cb->($pl, $msg)) {
901	$pl->ext_reply ($msg->{msgid}, %reply);	1115	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
907		1121
908	cf::override;	1122	cf::override;
909	},	1123	},
910	);	1124	);
911		1125
912	sub load_extension {
913	my ($path) = @_;
914
915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
916	my $base = $1;
917	my $pkg = $1;
918	$pkg =~ s/[^[:word:]]/_/g;
919	$pkg = "ext::$pkg";
920
921	warn "... loading '$path' into '$pkg'\n";
922
923	open my $fh, "<:utf8", $path
924	or die "$path: $!";
925
926	my $source =
927	"package $pkg; use strict; use utf8;\n"
928	. "#line 1 \"$path\"\n{\n"
929	. (do { local $/; <$fh> })
930	. "\n};\n1";
931
932	unless (eval $source) {
933	my $msg = $@ ? "$path: $@\n"
934	: "extension disabled.\n";
935	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
936	warn $@;
937	warn "mandatory extension failed to load, exiting.\n";
938	exit 1;
939	}
940	die $@;
941	}
942
943	push @EXTS, $pkg;
944	}
945
946	sub load_extensions {	1126	sub load_extensions {
		1127	cf::sync_job {
		1128	my %todo;
		1129
947	for my $ext (<$LIBDIR/*.ext>) {	1130	for my $path (<$LIBDIR/*.ext>) {
948	next unless -r $ext;	1131	next unless -r $path;
949	eval {	1132
950	load_extension $ext;	1133	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1134	my $base = $1;
		1135	my $pkg = $1;
		1136	$pkg =~ s/[^[:word:]]/_/g;
		1137	$pkg = "ext::$pkg";
		1138
		1139	open my $fh, "<:utf8", $path
		1140	or die "$path: $!";
		1141
		1142	my $source = do { local $/; <$fh> };
		1143
		1144	my %ext = (
		1145	path => $path,
		1146	base => $base,
		1147	pkg => $pkg,
		1148	);
		1149
		1150	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1151	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1152
		1153	$ext{source} =
		1154	"package $pkg; use strict; use utf8;\n"
		1155	. "#line 1 \"$path\"\n{\n"
		1156	. $source
		1157	. "\n};\n1";
		1158
		1159	$todo{$base} = \%ext;
		1160	}
		1161
		1162	my %done;
		1163	while (%todo) {
		1164	my $progress;
		1165
		1166	while (my ($k, $v) = each %todo) {
		1167	for (split /,\s*/, $v->{meta}{depends}) {
		1168	goto skip
		1169	unless exists $done{$_};
		1170	}
		1171
		1172	warn "... loading '$k' into '$v->{pkg}'\n";
		1173
		1174	unless (eval $v->{source}) {
		1175	my $msg = $@ ? "$v->{path}: $@\n"
		1176	: "$v->{base}: extension inactive.\n";
		1177
		1178	if (exists $v->{meta}{mandatory}) {
		1179	warn $msg;
		1180	warn "mandatory extension failed to load, exiting.\n";
		1181	exit 1;
		1182	}
		1183
		1184	warn $msg;
		1185	}
		1186
		1187	$done{$k} = delete $todo{$k};
		1188	push @EXTS, $v->{pkg};
		1189	$progress = 1;
951	1	1190	}
952	} or warn "$ext not loaded: $@";	1191
		1192	skip:
		1193	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1194	unless $progress;
		1195	}
953	}	1196	};
954	}	1197	}
955		1198
956	#############################################################################	1199	#############################################################################
		1200
		1201	=back
957		1202
958	=head2 CORE EXTENSIONS	1203	=head2 CORE EXTENSIONS
959		1204
960	Functions and methods that extend core crossfire objects.	1205	Functions and methods that extend core crossfire objects.
961		1206
…		…
1149	}	1394	}
1150		1395
1151	\@paths	1396	\@paths
1152	}	1397	}
1153		1398
		1399	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1400
		1401	Expand crossfire pod fragments into protocol xml.
		1402
		1403	=cut
		1404
		1405	sub expand_cfpod {
		1406	((my $self), (local $_)) = @_;
		1407
		1408	# escape & and <
		1409	s/&/&amp;/g;
		1410	s/(?<![BIUGH])</&lt;/g;
		1411
		1412	# this is buggy, it needs to properly take care of nested <'s
		1413
		1414	1 while
		1415	# replace B<>, I<>, U<> etc.
		1416	s/B<([^\>]*)>/<b>$1<\/b>/
		1417	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1418	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1419	# replace G<male|female> tags
		1420	|| s{G<([^>|]*)\|([^>]*)>}{
		1421	$self->gender ? $2 : $1
		1422	}ge
		1423	# replace H<hint text>
		1424	|| s{H<([^\>]*)>}
		1425	{
		1426	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1427	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1428	"")
		1429	[$self->{hintmode}]
		1430	}ge;
		1431
		1432	# create single paragraphs (very hackish)
		1433	s/(?<=\S)\n(?=\w)/ /g;
		1434
		1435	# compress some whitespace
		1436	s/\s+\n/\n/g; # ws line-ends
		1437	s/\n\n+/\n/g; # double lines
		1438	s/^\n+//; # beginning lines
		1439	s/\n+$//; # ending lines
		1440
		1441	$_
		1442	}
		1443
		1444	sub hintmode {
		1445	$_[0]{hintmode} = $_[1] if @_ > 1;
		1446	$_[0]{hintmode}
		1447	}
		1448
1154	=item $player->ext_reply ($msgid, %msg)	1449	=item $player->ext_reply ($msgid, %msg)
1155		1450
1156	Sends an ext reply to the player.	1451	Sends an ext reply to the player.
1157		1452
1158	=cut	1453	=cut
1159		1454
1160	sub ext_reply($$%) {	1455	sub ext_reply($$%) {
1161	my ($self, $id, %msg) = @_;	1456	my ($self, $id, %msg) = @_;
1162		1457
1163	$msg{msgid} = $id;	1458	$msg{msgid} = $id;
1164		1459	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1165	$self->send ("ext " . cf::to_json \%msg);
1166	}	1460	}
1167		1461
1168	=item $player->ext_event ($type, %msg)	1462	=item $player->ext_event ($type, %msg)
1169		1463
1170	Sends an ext event to the client.	1464	Sends an ext event to the client.
…		…
1185		1479
1186	package cf::region;	1480	package cf::region;
1187		1481
1188	=item cf::region::find_by_path $path	1482	=item cf::region::find_by_path $path
1189		1483
1190	Tries to decuce the probable region for a map knowing only its path.	1484	Tries to decuce the likely region for a map knowing only its path.
1191		1485
1192	=cut	1486	=cut
1193		1487
1194	sub find_by_path($) {	1488	sub find_by_path($) {
1195	my ($path) = @_;	1489	my ($path) = @_;
…		…
1269	my ($self, $merge) = @_;	1563	my ($self, $merge) = @_;
1270		1564
1271	# we have to keep some variables in memory intact	1565	# we have to keep some variables in memory intact
1272	local $self->{path};	1566	local $self->{path};
1273	local $self->{load_path};	1567	local $self->{load_path};
1274	local $self->{deny_save};
1275	local $self->{deny_reset};
1276		1568
1277	$self->SUPER::thawer_merge ($merge);	1569	$self->SUPER::thawer_merge ($merge);
1278	}	1570	}
1279		1571
1280	sub normalise {	1572	sub normalise {
…		…
1380		1672
1381	$_->change_map_light ($change)	1673	$_->change_map_light ($change)
1382	for grep $_->outdoor, values %cf::MAP;	1674	for grep $_->outdoor, values %cf::MAP;
1383	}	1675	}
1384		1676
		1677	sub decay_objects {
		1678	my ($self) = @_;
		1679
		1680	return if $self->{deny_reset};
		1681
		1682	$self->do_decay_objects;
		1683	}
		1684
1385	sub unlink_save {	1685	sub unlink_save {
1386	my ($self) = @_;	1686	my ($self) = @_;
1387		1687
1388	utf8::encode (my $save = $self->save_path);	1688	utf8::encode (my $save = $self->save_path);
1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1689	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1445	$self->load_header_orig	1745	$self->load_header_orig
1446	or return;	1746	or return;
1447	$self->prepare_orig;	1747	$self->prepare_orig;
1448	}	1748	}
1449		1749
		1750	$self->{deny_reset} = 1
		1751	if $self->no_reset;
		1752
1450	$self->default_region (cf::region::find_by_path $self->{path})	1753	$self->default_region (cf::region::find_by_path $self->{path})
1451	unless $self->default_region;	1754	unless $self->default_region;
1452		1755
1453	1	1756	1
1454	}	1757	}
…		…
1469	$map->{last_save} = $cf::RUNTIME;	1772	$map->{last_save} = $cf::RUNTIME;
1470		1773
1471	$map->load_header	1774	$map->load_header
1472	or return;	1775	or return;
1473		1776
1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1777	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1475	# doing this can freeze the server in a sync job, obviously	1778	# doing this can freeze the server in a sync job, obviously
1476	#$cf::WAIT_FOR_TICK->wait;	1779	#$cf::WAIT_FOR_TICK->wait;
1477	$map->reset;	1780	$map->reset;
1478	undef $guard;	1781	undef $guard;
1479	return find $path;	1782	return find $path;
…		…
1546	my ($self, $ob) = @_;	1849	my ($self, $ob) = @_;
1547		1850
1548	return find "~" . $ob->name . "/" . $self->{path}	1851	return find "~" . $ob->name . "/" . $self->{path}
1549	if $self->per_player;	1852	if $self->per_player;
1550		1853
		1854	# return find "?party/" . $ob->name . "/" . $self->{path}
		1855	# if $self->per_party;
		1856
1551	$self	1857	$self
1552	}	1858	}
1553		1859
1554	# find and load all maps in the 3x3 area around a map	1860	# find and load all maps in the 3x3 area around a map
1555	sub load_diag {	1861	sub load_diag {
…		…
1665		1971
1666	sub reset_at {	1972	sub reset_at {
1667	my ($self) = @_;	1973	my ($self) = @_;
1668		1974
1669	# TODO: safety, remove and allow resettable per-player maps	1975	# TODO: safety, remove and allow resettable per-player maps
1670	return 1e99 if $self->isa ("ext::map_per_player");#d#
1671	return 1e99 if $self->{deny_reset};	1976	return 1e99 if $self->{deny_reset};
1672		1977
1673	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1978	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1674	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	1979	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1675		1980
…		…
1686	my ($self) = @_;	1991	my ($self) = @_;
1687		1992
1688	my $lock = cf::lock_acquire "map_data:$self->{path}";	1993	my $lock = cf::lock_acquire "map_data:$self->{path}";
1689		1994
1690	return if $self->players;	1995	return if $self->players;
1691	return if $self->isa ("ext::map_per_player");#d#
1692		1996
1693	warn "resetting map ", $self->path;#d#	1997	warn "resetting map ", $self->path;
1694		1998
1695	$self->in_memory (cf::MAP_SWAPPED);	1999	$self->in_memory (cf::MAP_SWAPPED);
1696		2000
1697	# need to save uniques path	2001	# need to save uniques path
1698	unless ($self->{deny_save}) {	2002	unless ($self->{deny_save}) {
…		…
1730	$cf::MAP{$self->path} = $self;	2034	$cf::MAP{$self->path} = $self;
1731		2035
1732	$self->reset; # polite request, might not happen	2036	$self->reset; # polite request, might not happen
1733	}	2037	}
1734		2038
		2039	=item $maps = cf::map::tmp_maps
		2040
		2041	Returns an arrayref with all map paths of currently instantiated and saved
		2042	maps. May block.
		2043
		2044	=cut
		2045
		2046	sub tmp_maps() {
		2047	[
		2048	map {
		2049	utf8::decode $_;
		2050	/\.map$/
		2051	? normalise $_
		2052	: ()
		2053	} @{ aio_readdir $TMPDIR or [] }
		2054	]
		2055	}
		2056
		2057	=item $maps = cf::map::random_maps
		2058
		2059	Returns an arrayref with all map paths of currently instantiated and saved
		2060	random maps. May block.
		2061
		2062	=cut
		2063
		2064	sub random_maps() {
		2065	[
		2066	map {
		2067	utf8::decode $_;
		2068	/\.map$/
		2069	? normalise "?random/$_"
		2070	: ()
		2071	} @{ aio_readdir $RANDOMDIR or [] }
		2072	]
		2073	}
		2074
1735	=item cf::map::unique_maps	2075	=item cf::map::unique_maps
1736		2076
1737	Returns an arrayref of paths of all shared maps that have	2077	Returns an arrayref of paths of all shared maps that have
1738	instantiated unique items. May block.	2078	instantiated unique items. May block.
1739		2079
1740	=cut	2080	=cut
1741		2081
1742	sub unique_maps() {	2082	sub unique_maps() {
1743	my $files = aio_readdir $UNIQUEDIR	2083	[
1744	or return;	2084	map {
1745
1746	my @paths;
1747
1748	for (@$files) {
1749	utf8::decode $_;	2085	utf8::decode $_;
1750	next if /\.pst$/;	2086	/\.map$/
1751	next unless /^$PATH_SEP/o;	2087	? normalise $_
1752		2088	: ()
1753	push @paths, cf::map::normalise $_;	2089	} @{ aio_readdir $UNIQUEDIR or [] }
1754	}	2090	]
1755
1756	\@paths
1757	}	2091	}
1758		2092
1759	package cf;	2093	package cf;
1760		2094
1761	=back	2095	=back
…		…
1807		2141
1808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2142	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1809		2143
1810	if ($self->{record_replies}) {	2144	if ($self->{record_replies}) {
1811	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2145	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2146
1812	} else {	2147	} else {
		2148	my $pl = $self->contr;
		2149
		2150	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2151	my $diag = $pl->{npc_dialog};
		2152	$diag->{pl}->ext_reply (
		2153	$diag->{id},
		2154	msgtype => "reply",
		2155	msg => $diag->{pl}->expand_cfpod ($msg),
		2156	add_topics => []
		2157	);
		2158
		2159	} else {
1813	$msg = $npc->name . " says: $msg" if $npc;	2160	$msg = $npc->name . " says: $msg" if $npc;
1814	$self->message ($msg, $flags);	2161	$self->message ($msg, $flags);
		2162	}
1815	}	2163	}
1816	}	2164	}
1817		2165
1818	=item $player_object->may ("access")	2166	=item $player_object->may ("access")
1819		2167
…		…
1862	}	2210	}
1863		2211
1864	sub cf::object::player::enter_link {	2212	sub cf::object::player::enter_link {
1865	my ($self) = @_;	2213	my ($self) = @_;
1866		2214
		2215	$self->deactivate_recursive;
		2216
1867	return if UNIVERSAL::isa $self->map, "ext::map_link";	2217	return if UNIVERSAL::isa $self->map, "ext::map_link";
1868		2218
1869	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2219	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1870	if $self->map;	2220	if $self->map && $self->map->{path} ne "{link}";
1871		2221
1872	$self->enter_map ($LINK_MAP || link_map, 10, 10);	2222	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1873	}	2223	}
1874		2224
1875	sub cf::object::player::leave_link {	2225	sub cf::object::player::leave_link {
1876	my ($self, $map, $x, $y) = @_;	2226	my ($self, $map, $x, $y) = @_;
		2227
		2228	return unless $self->contr->active;
1877		2229
1878	my $link_pos = delete $self->{_link_pos};	2230	my $link_pos = delete $self->{_link_pos};
1879		2231
1880	unless ($map) {	2232	unless ($map) {
1881	# restore original map position	2233	# restore original map position
…		…
1904		2256
1905	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2257	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1906	$self->enter_map ($map, $x, $y);	2258	$self->enter_map ($map, $x, $y);
1907	}	2259	}
1908		2260
1909	cf::player->attach (
1910	on_logout => sub {
1911	my ($pl) = @_;
1912
1913	# abort map switching before logout
1914	if ($pl->ob->{_link_pos}) {
1915	cf::sync_job {
1916	$pl->ob->leave_link
1917	};
1918	}
1919	},
1920	on_login => sub {
1921	my ($pl) = @_;
1922
1923	# try to abort aborted map switching on player login :)
1924	# should happen only on crashes
1925	if ($pl->ob->{_link_pos}) {
1926	$pl->ob->enter_link;
1927	(async {
1928	$pl->ob->reply (undef,
1929	"There was an internal problem at your last logout, "
1930	. "the server will try to bring you to your intended destination in a second.",
1931	cf::NDI_RED);
1932	# we need this sleep as the login has a concurrent enter_exit running
1933	# and this sleep increases chances of the player not ending up in scorn
1934	Coro::Timer::sleep 1;
1935	$pl->ob->leave_link;
1936	})->prio (2);
1937	}
1938	},
1939	);
1940
1941	=item $player_object->goto ($path, $x, $y)	2261	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1942		2262
		2263	Moves the player to the given map-path and coordinates by first freezing
		2264	her, loading and preparing them map, calling the provided $check callback
		2265	that has to return the map if sucecssful, and then unfreezes the player on
		2266	the new (success) or old (failed) map position.
		2267
1943	=cut	2268	=cut
		2269
		2270	our $GOTOGEN;
1944		2271
1945	sub cf::object::player::goto {	2272	sub cf::object::player::goto {
1946	my ($self, $path, $x, $y) = @_;	2273	my ($self, $path, $x, $y, $check) = @_;
		2274
		2275	# do generation counting so two concurrent goto's will be executed in-order
		2276	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1947		2277
1948	$self->enter_link;	2278	$self->enter_link;
1949		2279
1950	(async {	2280	(async {
1951	my $map = eval {	2281	my $map = eval {
1952	my $map = cf::map::find $path;	2282	my $map = cf::map::find $path;
		2283
		2284	if ($map) {
1953	$map = $map->customise_for ($self) if $map;	2285	$map = $map->customise_for ($self);
		2286	$map = $check->($map) if $check && $map;
		2287	} else {
		2288	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2289	}
		2290
1954	$map	2291	$map
		2292	};
		2293
		2294	if ($@) {
		2295	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2296	LOG llevError | logBacktrace, Carp::longmess $@;
1955	} or	2297	}
1956	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1957		2298
		2299	if ($gen == $self->{_goto_generation}) {
		2300	delete $self->{_goto_generation};
1958	$self->leave_link ($map, $x, $y);	2301	$self->leave_link ($map, $x, $y);
		2302	}
1959	})->prio (1);	2303	})->prio (1);
1960	}	2304	}
1961		2305
1962	=item $player_object->enter_exit ($exit_object)	2306	=item $player_object->enter_exit ($exit_object)
1963		2307
…		…
2032	my $hp = $exit->stats->hp;	2376	my $hp = $exit->stats->hp;
2033	my $sp = $exit->stats->sp;	2377	my $sp = $exit->stats->sp;
2034		2378
2035	$self->enter_link;	2379	$self->enter_link;
2036		2380
		2381	# if exit is damned, update players death & WoR home-position
		2382	$self->contr->savebed ($slaying, $hp, $sp)
		2383	if $exit->flag (FLAG_DAMNED);
		2384
2037	(async {	2385	(async {
2038	$self->deactivate_recursive; # just to be sure	2386	$self->deactivate_recursive; # just to be sure
2039	unless (eval {	2387	unless (eval {
2040	$self->goto ($slaying, $hp, $sp);	2388	$self->goto ($slaying, $hp, $sp);
2041		2389
…		…
2068		2416
2069	utf8::encode $text;	2417	utf8::encode $text;
2070	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2418	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2071	}	2419	}
2072		2420
		2421	=item $client->send_msg ($color, $type, $msg, [extra...])
		2422
		2423	Send a drawinfo or msg packet to the client, formatting the msg for the
		2424	client if neccessary. C<$type> should be a string identifying the type of
		2425	the message, with C<log> being the default. If C<$color> is negative, suppress
		2426	the message unless the client supports the msg packet.
		2427
		2428	=cut
		2429
		2430	sub cf::client::send_msg {
		2431	my ($self, $color, $type, $msg, @extra) = @_;
		2432
		2433	$msg = $self->pl->expand_cfpod ($msg);
		2434
		2435	return unless @extra || length $msg;
		2436
		2437	if ($self->can_msg) {
		2438	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2439	} else {
		2440	# replace some tags by gcfclient-compatible ones
		2441	for ($msg) {
		2442	1 while
		2443	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2444	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2445	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2446	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2447	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2448	}
		2449
		2450	if ($color >= 0) {
		2451	if (0 && $msg =~ /\[/) {
		2452	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2453	} else {
		2454	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2455	$self->send_packet ("drawinfo $color $msg")
		2456	}
		2457	}
		2458	}
		2459	}
		2460
2073	=item $client->ext_event ($type, %msg)	2461	=item $client->ext_event ($type, %msg)
2074		2462
2075	Sends an exti event to the client.	2463	Sends an ext event to the client.
2076		2464
2077	=cut	2465	=cut
2078		2466
2079	sub cf::client::ext_event($$%) {	2467	sub cf::client::ext_event($$%) {
2080	my ($self, $type, %msg) = @_;	2468	my ($self, $type, %msg) = @_;
2081		2469
2082	$msg{msgtype} = "event_$type";	2470	$msg{msgtype} = "event_$type";
2083	$self->send_packet ("ext " . cf::to_json \%msg);	2471	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2084	}	2472	}
2085		2473
2086	=item $success = $client->query ($flags, "text", \&cb)	2474	=item $success = $client->query ($flags, "text", \&cb)
2087		2475
2088	Queues a query to the client, calling the given callback with	2476	Queues a query to the client, calling the given callback with
2089	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2477	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2090	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2478	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2091		2479
2092	Queries can fail, so check the return code. Or don't, as queries will become	2480	Queries can fail, so check the return code. Or don't, as queries will
2093	reliable at some point in the future.	2481	become reliable at some point in the future.
2094		2482
2095	=cut	2483	=cut
2096		2484
2097	sub cf::client::query {	2485	sub cf::client::query {
2098	my ($self, $flags, $text, $cb) = @_;	2486	my ($self, $flags, $text, $cb) = @_;
…		…
2106	utf8::encode $text;	2494	utf8::encode $text;
2107	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2495	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2108		2496
2109	$self->send_packet ($self->{query_queue}[0][0])	2497	$self->send_packet ($self->{query_queue}[0][0])
2110	if @{ $self->{query_queue} } == 1;	2498	if @{ $self->{query_queue} } == 1;
		2499
		2500	1
2111	}	2501	}
2112		2502
2113	cf::client->attach (	2503	cf::client->attach (
		2504	on_connect => sub {
		2505	my ($ns) = @_;
		2506
		2507	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2508	},
2114	on_reply => sub {	2509	on_reply => sub {
2115	my ($ns, $msg) = @_;	2510	my ($ns, $msg) = @_;
2116		2511
2117	# this weird shuffling is so that direct followup queries	2512	# this weird shuffling is so that direct followup queries
2118	# get handled first	2513	# get handled first
…		…
2130	} else {	2525	} else {
2131	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2526	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2132	}	2527	}
2133	}	2528	}
2134	},	2529	},
		2530	on_exticmd => sub {
		2531	my ($ns, $buf) = @_;
		2532
		2533	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2534
		2535	if (ref $msg) {
		2536	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2537	if (my %reply = $cb->($ns, $msg)) {
		2538	$reply{msgid} = $msg->{msgid};
		2539	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2540	}
		2541	}
		2542	} else {
		2543	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2544	}
		2545
		2546	cf::override;
		2547	},
2135	);	2548	);
2136		2549
2137	=item $client->async (\&cb)	2550	=item $client->async (\&cb)
2138		2551
2139	Create a new coroutine, running the specified callback. The coroutine will	2552	Create a new coroutine, running the specified callback. The coroutine will
…		…
2188		2601
2189	=pod	2602	=pod
2190		2603
2191	The following functions and methods are available within a safe environment:	2604	The following functions and methods are available within a safe environment:
2192		2605
2193	cf::object contr pay_amount pay_player map	2606	cf::object
		2607	contr pay_amount pay_player map x y force_find force_add
		2608	insert remove
		2609
2194	cf::object::player player	2610	cf::object::player
2195	cf::player peaceful	2611	player
2196	cf::map trigger	2612
		2613	cf::player
		2614	peaceful
		2615
		2616	cf::map
		2617	trigger
2197		2618
2198	=cut	2619	=cut
2199		2620
2200	for (	2621	for (
2201	["cf::object" => qw(contr pay_amount pay_player map)],	2622	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2623	insert remove)],
2202	["cf::object::player" => qw(player)],	2624	["cf::object::player" => qw(player)],
2203	["cf::player" => qw(peaceful)],	2625	["cf::player" => qw(peaceful)],
2204	["cf::map" => qw(trigger)],	2626	["cf::map" => qw(trigger)],
2205	) {	2627	) {
2206	no strict 'refs';	2628	no strict 'refs';
…		…
2277	=back	2699	=back
2278		2700
2279	=cut	2701	=cut
2280		2702
2281	#############################################################################	2703	#############################################################################
2282
2283	=head2 EXTENSION DATABASE SUPPORT
2284
2285	Crossfire maintains a very simple database for extension use. It can
2286	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2287	convert to/from binary).
2288
2289	The parameter C<$family> should best start with the name of the extension
2290	using it, it should be unique.
2291
2292	=over 4
2293
2294	=item $value = cf::db_get $family => $key
2295
2296	Returns a single value from the database.
2297
2298	=item cf::db_put $family => $key => $value
2299
2300	Stores the given C<$value> in the family.
2301
2302	=cut
2303
2304	our $DB;
2305
2306	sub db_init {
2307	unless ($DB) {
2308	$DB = BDB::db_create $DB_ENV;
2309
2310	cf::sync_job {
2311	eval {
2312	$DB->set_flags (BDB::CHKSUM);
2313
2314	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2315	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2316	cf::cleanup "db_open(db): $!" if $!;
2317	};
2318	cf::cleanup "db_open(db): $@" if $@;
2319	};
2320	}
2321	}
2322
2323	sub db_get($$) {
2324	my $key = "$_[0]/$_[1]";
2325
2326	cf::sync_job {
2327	BDB::db_get $DB, undef, $key, my $data;
2328
2329	$! ? ()
2330	: $data
2331	}
2332	}
2333
2334	sub db_put($$$) {
2335	BDB::dbreq_pri 4;
2336	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2337	}
2338
2339	=item cf::cache $id => [$paths...], $processversion => $process
2340
2341	Generic caching function that returns the value of the resource $id,
2342	caching and regenerating as required.
2343
2344	This function can block.
2345
2346	=cut
2347
2348	sub cache {
2349	my ($id, $src, $processversion, $process) = @_;
2350
2351	my $meta =
2352	join "\x00",
2353	$processversion,
2354	map {
2355	aio_stat $_
2356	and Carp::croak "$_: $!";
2357
2358	($_, (stat _)[7,9])
2359	} @$src;
2360
2361	my $dbmeta = db_get cache => "$id/meta";
2362	if ($dbmeta ne $meta) {
2363	# changed, we may need to process
2364
2365	my @data;
2366	my $md5;
2367
2368	for (0 .. $#$src) {
2369	0 <= aio_load $src->[$_], $data[$_]
2370	or Carp::croak "$src->[$_]: $!";
2371	}
2372
2373	# if processing is expensive, check
2374	# checksum first
2375	if (1) {
2376	$md5 =
2377	join "\x00",
2378	$processversion,
2379	map {
2380	Coro::cede;
2381	($src->[$_], Digest::MD5::md5_hex $data[$_])
2382	} 0.. $#$src;
2383
2384
2385	my $dbmd5 = db_get cache => "$id/md5";
2386	if ($dbmd5 eq $md5) {
2387	db_put cache => "$id/meta", $meta;
2388
2389	return db_get cache => "$id/data";
2390	}
2391	}
2392
2393	my $t1 = Time::HiRes::time;
2394	my $data = $process->(\@data);
2395	my $t2 = Time::HiRes::time;
2396
2397	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2398
2399	db_put cache => "$id/data", $data;
2400	db_put cache => "$id/md5" , $md5;
2401	db_put cache => "$id/meta", $meta;
2402
2403	return $data;
2404	}
2405
2406	db_get cache => "$id/data"
2407	}
2408
2409	=item fork_call { }, $args
2410
2411	Executes the given code block with the given arguments in a seperate
2412	process, returning the results. Everything must be serialisable with
2413	Coro::Storable. May, of course, block. Note that the executed sub may
2414	never block itself or use any form of Event handling.
2415
2416	=cut
2417
2418	sub fork_call(&@) {
2419	my ($cb, @args) = @_;
2420
2421	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2422	# or die "socketpair: $!";
2423	pipe my $fh1, my $fh2
2424	or die "pipe: $!";
2425
2426	if (my $pid = fork) {
2427	close $fh2;
2428
2429	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2430	$res = Coro::Storable::thaw $res;
2431
2432	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2433
2434	die $$res unless "ARRAY" eq ref $res;
2435
2436	return wantarray ? @$res : $res->[-1];
2437	} else {
2438	local $SIG{__WARN__};
2439	eval {
2440	local $SIG{__DIE__};
2441	close $fh1;
2442
2443	my @res = eval { $cb->(@args) };
2444	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2445	};
2446
2447	warn $@ if $@;
2448	_exit 0;
2449	}
2450	}
2451
2452
2453
2454	#############################################################################
2455	# the server's init and main functions	2704	# the server's init and main functions
2456		2705
2457	sub load_facedata($) {	2706	sub load_facedata($) {
2458	my ($path) = @_;	2707	my ($path) = @_;
2459		2708
…		…
2471	{	2720	{
2472	my $faces = $facedata->{faceinfo};	2721	my $faces = $facedata->{faceinfo};
2473		2722
2474	while (my ($face, $info) = each %$faces) {	2723	while (my ($face, $info) = each %$faces) {
2475	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2724	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2476	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2725	cf::face::set_visibility $idx, $info->{visibility};
		2726	cf::face::set_magicmap $idx, $info->{magicmap};
2477	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2727	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2478	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2728	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2479	Coro::cede;	2729
		2730	cf::cede_to_tick;
2480	}	2731	}
2481		2732
2482	while (my ($face, $info) = each %$faces) {	2733	while (my ($face, $info) = each %$faces) {
2483	next unless $info->{smooth};	2734	next unless $info->{smooth};
2484	my $idx = cf::face::find $face	2735	my $idx = cf::face::find $face
2485	or next;	2736	or next;
2486	if (my $smooth = cf::face::find $info->{smooth}) {	2737	if (my $smooth = cf::face::find $info->{smooth}) {
		2738	cf::face::set_smooth $idx, $smooth;
2487	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2739	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2488	} else {	2740	} else {
2489	warn "smooth face '$info->{smooth}' not found for face '$face'";	2741	warn "smooth face '$info->{smooth}' not found for face '$face'";
2490	}	2742	}
2491	Coro::cede;	2743
		2744	cf::cede_to_tick;
2492	}	2745	}
2493	}	2746	}
2494		2747
2495	{	2748	{
2496	my $anims = $facedata->{animinfo};	2749	my $anims = $facedata->{animinfo};
2497		2750
2498	while (my ($anim, $info) = each %$anims) {	2751	while (my ($anim, $info) = each %$anims) {
2499	cf::anim::set $anim, $info->{frames}, $info->{facings};	2752	cf::anim::set $anim, $info->{frames}, $info->{facings};
2500	Coro::cede;	2753	cf::cede_to_tick;
2501	}	2754	}
2502		2755
2503	cf::anim::invalidate_all; # d'oh	2756	cf::anim::invalidate_all; # d'oh
		2757	}
		2758
		2759	{
		2760	# TODO: for gcfclient pleasure, we should give resources
		2761	# that gcfclient doesn't grok a >10000 face index.
		2762	my $res = $facedata->{resource};
		2763	my $enc = JSON::XS->new->utf8->canonical;
		2764
		2765	while (my ($name, $info) = each %$res) {
		2766	my $meta = $enc->encode ({
		2767	name => $name,
		2768	type => $info->{type},
		2769	copyright => $info->{copyright},
		2770	});
		2771	my $data = pack "(w/a*)*", $meta, $info->{data};
		2772	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2773
		2774	use Data::Dumper; warn Dumper substr $data, 0, 100;#d#
		2775
		2776	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2777	cf::face::set_type $idx, 1;
		2778	cf::face::set_data $idx, 0, $data, $chk;
		2779
		2780	# TODO
		2781	cf::cede_to_tick;
		2782	}
2504	}	2783	}
2505		2784
2506	1	2785	1
2507	}	2786	}
2508		2787
…		…
2517	}	2796	}
2518		2797
2519	sub reload_archetypes {	2798	sub reload_archetypes {
2520	load_resource_file "$DATADIR/archetypes"	2799	load_resource_file "$DATADIR/archetypes"
2521	or die "unable to load archetypes\n";	2800	or die "unable to load archetypes\n";
		2801	#d# NEED to laod twice to resolve forward references
		2802	# this really needs to be done in an extra post-pass
		2803	# (which needs to be synchronous, so solve it differently)
		2804	load_resource_file "$DATADIR/archetypes"
		2805	or die "unable to load archetypes\n";
2522	}	2806	}
2523		2807
2524	sub reload_treasures {	2808	sub reload_treasures {
2525	load_resource_file "$DATADIR/treasures"	2809	load_resource_file "$DATADIR/treasures"
2526	or die "unable to load treasurelists\n";	2810	or die "unable to load treasurelists\n";
…		…
2529	sub reload_resources {	2813	sub reload_resources {
2530	warn "reloading resource files...\n";	2814	warn "reloading resource files...\n";
2531		2815
2532	reload_regions;	2816	reload_regions;
2533	reload_facedata;	2817	reload_facedata;
		2818	#reload_archetypes;#d#
2534	reload_archetypes;	2819	reload_archetypes;
2535	reload_treasures;	2820	reload_treasures;
2536		2821
2537	warn "finished reloading resource files\n";	2822	warn "finished reloading resource files\n";
2538	}	2823	}
…		…
2595	},	2880	},
2596	);	2881	);
2597	}	2882	}
2598	}	2883	}
2599		2884
		2885	sub write_runtime {
		2886	my $runtime = "$LOCALDIR/runtime";
		2887
		2888	# first touch the runtime file to show we are still running:
		2889	# the fsync below can take a very very long time.
		2890
		2891	IO::AIO::aio_utime $runtime, undef, undef;
		2892
		2893	my $guard = cf::lock_acquire "write_runtime";
		2894
		2895	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2896	or return;
		2897
		2898	my $value = $cf::RUNTIME + 90 + 10;
		2899	# 10 is the runtime save interval, for a monotonic clock
		2900	# 60 allows for the watchdog to kill the server.
		2901
		2902	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2903	and return;
		2904
		2905	# always fsync - this file is important
		2906	aio_fsync $fh
		2907	and return;
		2908
		2909	# touch it again to show we are up-to-date
		2910	aio_utime $fh, undef, undef;
		2911
		2912	close $fh
		2913	or return;
		2914
		2915	aio_rename "$runtime~", $runtime
		2916	and return;
		2917
		2918	warn "runtime file written.\n";
		2919
		2920	1
		2921	}
		2922
2600	sub emergency_save() {	2923	sub emergency_save() {
2601	my $freeze_guard = cf::freeze_mainloop;	2924	my $freeze_guard = cf::freeze_mainloop;
2602		2925
2603	warn "enter emergency perl save\n";	2926	warn "enter emergency perl save\n";
2604		2927
…		…
2679	%EXT_CORO = ();	3002	%EXT_CORO = ();
2680		3003
2681	warn "removing commands";	3004	warn "removing commands";
2682	%COMMAND = ();	3005	%COMMAND = ();
2683		3006
2684	warn "removing ext commands";	3007	warn "removing ext/exti commands";
2685	%EXTCMD = ();	3008	%EXTCMD = ();
		3009	%EXTICMD = ();
2686		3010
2687	warn "unloading/nuking all extensions";	3011	warn "unloading/nuking all extensions";
2688	for my $pkg (@EXTS) {	3012	for my $pkg (@EXTS) {
2689	warn "... unloading $pkg";	3013	warn "... unloading $pkg";
2690		3014
…		…
2808	my $signal = new Coro::Signal;	3132	my $signal = new Coro::Signal;
2809	push @WAIT_FOR_TICK_BEGIN, $signal;	3133	push @WAIT_FOR_TICK_BEGIN, $signal;
2810	$signal->wait;	3134	$signal->wait;
2811	}	3135	}
2812		3136
		3137	my $min = 1e6;#d#
		3138	my $avg = 10;
2813	$TICK_WATCHER = Event->timer (	3139	$TICK_WATCHER = Event->timer (
2814	reentrant => 0,	3140	reentrant => 0,
2815	parked => 1,	3141	parked => 1,
2816	prio => 0,	3142	prio => 0,
2817	at => $NEXT_TICK || $TICK,	3143	at => $NEXT_TICK || $TICK,
…		…
2821	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3147	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2822	unless ++$bug_warning > 10;	3148	unless ++$bug_warning > 10;
2823	return;	3149	return;
2824	}	3150	}
2825		3151
2826	$NOW = Event::time;	3152	$NOW = $tick_start = Event::time;
2827		3153
2828	cf::server_tick; # one server iteration	3154	cf::server_tick; # one server iteration
		3155
		3156	0 && sync_job {#d#
		3157	for(1..10) {
		3158	my $t = Event::time;
		3159	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3160	or die;
		3161
		3162	$map->width (50);
		3163	$map->height (50);
		3164	$map->alloc;
		3165	$map->_load_objects ("/tmp/x.map", 1);
		3166	my $t = Event::time - $t;
		3167
		3168	#next unless $t < 0.0013;#d#
		3169	if ($t < $min) {
		3170	$min = $t;
		3171	}
		3172	$avg = $avg * 0.99 + $t * 0.01;
		3173	}
		3174	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3175	exit 0;
		3176	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3177	};
2829		3178
2830	$RUNTIME += $TICK;	3179	$RUNTIME += $TICK;
2831	$NEXT_TICK += $TICK;	3180	$NEXT_TICK += $TICK;
2832		3181
2833	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3182	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2839	}	3188	}
2840		3189
2841	# my $AFTER = Event::time;	3190	# my $AFTER = Event::time;
2842	# warn $AFTER - $NOW;#d#	3191	# warn $AFTER - $NOW;#d#
2843		3192
		3193	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3194	$sig->send;
		3195	}
		3196	while (my $sig = shift @WAIT_FOR_TICK) {
		3197	$sig->send;
		3198	}
		3199
		3200	$NOW = Event::time;
		3201
2844	# if we are delayed by four ticks or more, skip them all	3202	# if we are delayed by four ticks or more, skip them all
2845	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3203	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2846		3204
2847	$TICK_WATCHER->at ($NEXT_TICK);	3205	$TICK_WATCHER->at ($NEXT_TICK);
2848	$TICK_WATCHER->start;	3206	$TICK_WATCHER->start;
2849		3207
2850	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3208	$LOAD = ($NOW - $tick_start) / $TICK;
2851	$sig->send;	3209	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2852	}
2853	while (my $sig = shift @WAIT_FOR_TICK) {
2854	$sig->send;
2855	}
2856		3210
2857	_post_tick;	3211	_post_tick;
		3212
		3213
2858	},	3214	},
2859	);	3215	);
2860		3216
2861	{	3217	{
2862	BDB::max_poll_time $TICK * 0.1;	3218	BDB::max_poll_time $TICK * 0.1;
…		…
2921	prio => 6,	3277	prio => 6,
2922	cb => \&IO::AIO::poll_cb,	3278	cb => \&IO::AIO::poll_cb,
2923	);	3279	);
2924	}	3280	}
2925		3281
		3282	my $_log_backtrace;
		3283
		3284	sub _log_backtrace {
		3285	my ($msg, @addr) = @_;
		3286
		3287	$msg =~ s/\n//;
		3288
		3289	# limit the # of concurrent backtraces
		3290	if ($_log_backtrace < 2) {
		3291	++$_log_backtrace;
		3292	async {
		3293	my @bt = fork_call {
		3294	@addr = map { sprintf "%x", $_ } @addr;
		3295	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3296	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3297	or die "addr2line: $!";
		3298
		3299	my @funcs;
		3300	my @res = <$fh>;
		3301	chomp for @res;
		3302	while (@res) {
		3303	my ($func, $line) = splice @res, 0, 2, ();
		3304	push @funcs, "[$func] $line";
		3305	}
		3306
		3307	@funcs
		3308	};
		3309
		3310	LOG llevInfo, "[ABT] $msg\n";
		3311	LOG llevInfo, "[ABT] $_\n" for @bt;
		3312	--$_log_backtrace;
		3313	};
		3314	} else {
		3315	LOG llevInfo, "[ABT] $msg\n";
		3316	LOG llevInfo, "[ABT] [suppressed]\n";
		3317	}
		3318	}
		3319
2926	# load additional modules	3320	# load additional modules
2927	use cf::pod;	3321	use cf::pod;
2928		3322
2929	END { cf::emergency_save }	3323	END { cf::emergency_save }
2930		3324

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