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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.242 by root, Mon Apr 16 12:37:08 2007 UTC vs.
Revision 1.281 by root, Sat Jun 16 23:22:59 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
9	use Event;	10	use Event;
10	use Opcode;	11	use Opcode;
11	use Safe;	12	use Safe;
12	use Safe::Hole;	13	use Safe::Hole;
13		14
14	use Coro 3.52 ();	15	use Coro 3.61 ();
15	use Coro::State;	16	use Coro::State;
		17	use Coro::Handle;
16	use Coro::Event;	18	use Coro::Event;
17	use Coro::Timer;	19	use Coro::Timer;
18	use Coro::Signal;	20	use Coro::Signal;
19	use Coro::Semaphore;	21	use Coro::Semaphore;
20	use Coro::AIO;	22	use Coro::AIO;
…		…
52	our %EXT_CORO = (); # coroutines bound to extensions	54	our %EXT_CORO = (); # coroutines bound to extensions
53	our %EXT_MAP = (); # pluggable maps	55	our %EXT_MAP = (); # pluggable maps
54		56
55	our $RELOAD; # number of reloads so far	57	our $RELOAD; # number of reloads so far
56	our @EVENT;	58	our @EVENT;
57	our $LIBDIR = datadir . "/ext";
58		59
59	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
60	our $TICK_WATCHER;	73	our $TICK_WATCHER;
61	our $AIO_POLL_WATCHER;	74	our $AIO_POLL_WATCHER;
62	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written	75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
63	our $NEXT_TICK;	76	our $NEXT_TICK;
64	our $NOW;	77	our $NOW;
…		…
73	our $RUNTIME;	86	our $RUNTIME;
74		87
75	our %PLAYER; # all users	88	our %PLAYER; # all users
76	our %MAP; # all maps	89	our %MAP; # all maps
77	our $LINK_MAP; # the special {link} map, which is always available	90	our $LINK_MAP; # the special {link} map, which is always available
78	our $RANDOM_MAPS = cf::localdir . "/random";
79	our $BDB_ENV_DIR = cf::localdir . "/db";
80		91
81	# used to convert map paths into valid unix filenames by replacing / by ∕	92	# used to convert map paths into valid unix filenames by replacing / by ∕
82	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
83		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
84	binmode STDOUT;	99	binmode STDOUT;
85	binmode STDERR;	100	binmode STDERR;
86		101
87	# read virtual server time, if available	102	# read virtual server time, if available
88	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
89	open my $fh, "<", cf::localdir . "/runtime"	104	open my $fh, "<", "$LOCALDIR/runtime"
90	or die "unable to read runtime file: $!";	105	or die "unable to read runtime file: $!";
91	$RUNTIME = <$fh> + 0.;	106	$RUNTIME = <$fh> + 0.;
92	}	107	}
93		108
94	mkdir cf::localdir;	109	mkdir $_
95	mkdir cf::localdir . "/" . cf::playerdir;	110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
96	mkdir cf::localdir . "/" . cf::tmpdir;
97	mkdir cf::localdir . "/" . cf::uniquedir;
98	mkdir $RANDOM_MAPS;
99	mkdir $BDB_ENV_DIR;
100		111
101	our $EMERGENCY_POSITION;	112	our $EMERGENCY_POSITION;
102		113
103	sub cf::map::normalise;	114	sub cf::map::normalise;
104		115
…		…
115	=item $cf::RUNTIME	126	=item $cf::RUNTIME
116		127
117	The time this server has run, starts at 0 and is increased by $cf::TICK on	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
118	every server tick.	129	every server tick.
119		130
120	=item $cf::LIBDIR	131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
121		134
122	The perl library directory, where extensions and cf-specific modules can	135	Various directories - "/etc", read-only install directory, perl-library
123	be found. It will be added to C<@INC> automatically.	136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
124		139
125	=item $cf::NOW	140	=item $cf::NOW
126		141
127	The time of the last (current) server tick.	142	The time of the last (current) server tick.
128		143
129	=item $cf::TICK	144	=item $cf::TICK
130		145
131	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
132		157
133	=item %cf::CFG	158	=item %cf::CFG
134		159
135	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
136	from wherever your confdir points to.	161	from wherever your confdir points to.
…		…
146	=cut	171	=cut
147		172
148	BEGIN {	173	BEGIN {
149	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
150	my $msg = join "", @_;	175	my $msg = join "", @_;
151	utf8::encode $msg;
152		176
153	$msg .= "\n"	177	$msg .= "\n"
154	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
155		179
		180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
156	LOG llevError, $msg;	183	LOG llevError, $msg;
157	};	184	};
158	}	185	}
159		186
160	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
161	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
162	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
163	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
164	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
165	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
166		194
167	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
168	# within the Safe compartment.	196	# within the Safe compartment.
169	for my $pkg (qw(	197	for my $pkg (qw(
170	cf::global cf::attachable	198	cf::global cf::attachable
…		…
178	}	206	}
179		207
180	$Event::DIED = sub {	208	$Event::DIED = sub {
181	warn "error in event callback: @_";	209	warn "error in event callback: @_";
182	};	210	};
		211
		212	#############################################################################
183		213
184	=head2 UTILITY FUNCTIONS	214	=head2 UTILITY FUNCTIONS
185		215
186	=over 4	216	=over 4
187		217
…		…
230	returned.	260	returned.
231		261
232	Lock names should begin with a unique identifier (for example, cf::map::find	262	Lock names should begin with a unique identifier (for example, cf::map::find
233	uses map_find and cf::map::load uses map_load).	263	uses map_find and cf::map::load uses map_load).
234		264
		265	=item $locked = cf::lock_active $string
		266
		267	Return true if the lock is currently active, i.e. somebody has locked it.
		268
235	=cut	269	=cut
236		270
237	our %LOCK;	271	our %LOCK;
238		272
239	sub lock_wait($) {	273	sub lock_wait($) {
…		…
256		290
257	Coro::guard {	291	Coro::guard {
258	# wake up all waiters, to be on the safe side	292	# wake up all waiters, to be on the safe side
259	$_->ready for @{ delete $LOCK{$key} };	293	$_->ready for @{ delete $LOCK{$key} };
260	}	294	}
		295	}
		296
		297	sub lock_active($) {
		298	my ($key) = @_;
		299
		300	! ! $LOCK{$key}
261	}	301	}
262		302
263	sub freeze_mainloop {	303	sub freeze_mainloop {
264	return unless $TICK_WATCHER->is_active;	304	return unless $TICK_WATCHER->is_active;
265		305
…		…
280		320
281	BEGIN { *async = \&Coro::async_pool }	321	BEGIN { *async = \&Coro::async_pool }
282		322
283	=item cf::sync_job { BLOCK }	323	=item cf::sync_job { BLOCK }
284		324
285	The design of crossfire+ requires that the main coro ($Coro::main) is	325	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
286	always able to handle events or runnable, as crossfire+ is only partly	326	is always able to handle events or runnable, as Crossfire TRT is only
287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	327	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		328	acceptable.
288		329
289	If it must be done, put the blocking parts into C<sync_job>. This will run	330	If it must be done, put the blocking parts into C<sync_job>. This will run
290	the given BLOCK in another coroutine while waiting for the result. The	331	the given BLOCK in another coroutine while waiting for the result. The
291	server will be frozen during this time, so the block should either finish	332	server will be frozen during this time, so the block should either finish
292	fast or be very important.	333	fast or be very important.
…		…
295		336
296	sub sync_job(&) {	337	sub sync_job(&) {
297	my ($job) = @_;	338	my ($job) = @_;
298		339
299	if ($Coro::current == $Coro::main) {	340	if ($Coro::current == $Coro::main) {
		341	my $time = Event::time;
		342
300	# this is the main coro, too bad, we have to block	343	# this is the main coro, too bad, we have to block
301	# till the operation succeeds, freezing the server :/	344	# till the operation succeeds, freezing the server :/
302		345
303	# TODO: use suspend/resume instead	346	# TODO: use suspend/resume instead
304	# (but this is cancel-safe)	347	# (but this is cancel-safe)
…		…
315		358
316	while ($busy) {	359	while ($busy) {
317	Coro::cede or Event::one_event;	360	Coro::cede or Event::one_event;
318	}	361	}
319		362
		363	$time = Event::time - $time;
		364
		365	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		366	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		367
		368	$tick_start += $time; # do not account sync jobs to server load
		369
320	wantarray ? @res : $res[0]	370	wantarray ? @res : $res[0]
321	} else {	371	} else {
322	# we are in another coroutine, how wonderful, everything just works	372	# we are in another coroutine, how wonderful, everything just works
323		373
324	$job->()	374	$job->()
…		…
343	$EXT_CORO{$coro+0} = $coro;	393	$EXT_CORO{$coro+0} = $coro;
344		394
345	$coro	395	$coro
346	}	396	}
347		397
348	sub write_runtime {	398	=item fork_call { }, $args
349	my $guard = cf::lock_acquire "write_runtime";
350		399
351	my $runtime = cf::localdir . "/runtime";	400	Executes the given code block with the given arguments in a seperate
		401	process, returning the results. Everything must be serialisable with
		402	Coro::Storable. May, of course, block. Note that the executed sub may
		403	never block itself or use any form of Event handling.
352		404
353	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	405	=cut
354	or return;
355		406
356	my $value = $cf::RUNTIME + 90 + 10;	407	sub fork_call(&@) {
357	# 10 is the runtime save interval, for a monotonic clock	408	my ($cb, @args) = @_;
358	# 60 allows for the watchdog to kill the server.
359		409
360	(aio_write $fh, 0, (length $value), $value, 0) <= 0	410	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
361	and return;	411	# or die "socketpair: $!";
		412	pipe my $fh1, my $fh2
		413	or die "pipe: $!";
362		414
363	# always fsync - this file is important	415	if (my $pid = fork) {
364	aio_fsync $fh
365	and return;
366
367	close $fh	416	close $fh2;
368	or return;
369		417
370	aio_rename "$runtime~", $runtime	418	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
371	and return;	419	$res = Coro::Storable::thaw $res;
372		420
		421	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		422
		423	die $$res unless "ARRAY" eq ref $res;
		424
		425	return wantarray ? @$res : $res->[-1];
		426	} else {
		427	reset_signals;
		428	local $SIG{__WARN__};
		429	local $SIG{__DIE__};
		430	eval {
		431	close $fh1;
		432
		433	my @res = eval { $cb->(@args) };
		434	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		435	};
		436
		437	warn $@ if $@;
		438	_exit 0;
373	1	439	}
		440	}
		441
		442	=item $value = cf::db_get $family => $key
		443
		444	Returns a single value from the environment database.
		445
		446	=item cf::db_put $family => $key => $value
		447
		448	Stores the given C<$value> in the family. It can currently store binary
		449	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		450
		451	=cut
		452
		453	our $DB;
		454
		455	sub db_init {
		456	unless ($DB) {
		457	$DB = BDB::db_create $DB_ENV;
		458
		459	cf::sync_job {
		460	eval {
		461	$DB->set_flags (BDB::CHKSUM);
		462
		463	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		464	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		465	cf::cleanup "db_open(db): $!" if $!;
		466	};
		467	cf::cleanup "db_open(db): $@" if $@;
		468	};
		469	}
		470	}
		471
		472	sub db_get($$) {
		473	my $key = "$_[0]/$_[1]";
		474
		475	cf::sync_job {
		476	BDB::db_get $DB, undef, $key, my $data;
		477
		478	$! ? ()
		479	: $data
		480	}
		481	}
		482
		483	sub db_put($$$) {
		484	BDB::dbreq_pri 4;
		485	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		486	}
		487
		488	=item cf::cache $id => [$paths...], $processversion => $process
		489
		490	Generic caching function that returns the value of the resource $id,
		491	caching and regenerating as required.
		492
		493	This function can block.
		494
		495	=cut
		496
		497	sub cache {
		498	my ($id, $src, $processversion, $process) = @_;
		499
		500	my $meta =
		501	join "\x00",
		502	$processversion,
		503	map {
		504	aio_stat $_
		505	and Carp::croak "$_: $!";
		506
		507	($_, (stat _)[7,9])
		508	} @$src;
		509
		510	my $dbmeta = db_get cache => "$id/meta";
		511	if ($dbmeta ne $meta) {
		512	# changed, we may need to process
		513
		514	my @data;
		515	my $md5;
		516
		517	for (0 .. $#$src) {
		518	0 <= aio_load $src->[$_], $data[$_]
		519	or Carp::croak "$src->[$_]: $!";
		520	}
		521
		522	# if processing is expensive, check
		523	# checksum first
		524	if (1) {
		525	$md5 =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	Coro::cede;
		530	($src->[$_], Digest::MD5::md5_hex $data[$_])
		531	} 0.. $#$src;
		532
		533
		534	my $dbmd5 = db_get cache => "$id/md5";
		535	if ($dbmd5 eq $md5) {
		536	db_put cache => "$id/meta", $meta;
		537
		538	return db_get cache => "$id/data";
		539	}
		540	}
		541
		542	my $t1 = Time::HiRes::time;
		543	my $data = $process->(\@data);
		544	my $t2 = Time::HiRes::time;
		545
		546	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		547
		548	db_put cache => "$id/data", $data;
		549	db_put cache => "$id/md5" , $md5;
		550	db_put cache => "$id/meta", $meta;
		551
		552	return $data;
		553	}
		554
		555	db_get cache => "$id/data"
374	}	556	}
375		557
376	=item cf::datalog type => key => value, ...	558	=item cf::datalog type => key => value, ...
377		559
378	Log a datalog packet of the given type with the given key-value pairs.	560	Log a datalog packet of the given type with the given key-value pairs.
…		…
396	attach callbacks/event handlers (a collection of which is called an "attachment")	578	attach callbacks/event handlers (a collection of which is called an "attachment")
397	to it. All such attachable objects support the following methods.	579	to it. All such attachable objects support the following methods.
398		580
399	In the following description, CLASS can be any of C<global>, C<object>	581	In the following description, CLASS can be any of C<global>, C<object>
400	C<player>, C<client> or C<map> (i.e. the attachable objects in	582	C<player>, C<client> or C<map> (i.e. the attachable objects in
401	crossfire+).	583	Crossfire TRT).
402		584
403	=over 4	585	=over 4
404		586
405	=item $attachable->attach ($attachment, key => $value...)	587	=item $attachable->attach ($attachment, key => $value...)
406		588
…		…
569	$registry = $CB_TYPE[$object_type] ||= [];	751	$registry = $CB_TYPE[$object_type] ||= [];
570		752
571	} elsif ($type eq "subtype") {	753	} elsif ($type eq "subtype") {
572	defined $object_type or Carp::croak "subtype specified without type";	754	defined $object_type or Carp::croak "subtype specified without type";
573	my $object_subtype = shift @arg;	755	my $object_subtype = shift @arg;
574	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	756	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
575		757
576	} elsif ($type eq "package") {	758	} elsif ($type eq "package") {
577	my $pkg = shift @arg;	759	my $pkg = shift @arg;
578		760
579	while (my ($name, $id) = each %cb_id) {	761	while (my ($name, $id) = each %cb_id) {
…		…
608	_attach $registry, $klass, @attach;	790	_attach $registry, $klass, @attach;
609	}	791	}
610		792
611	$obj->{$name} = \%arg;	793	$obj->{$name} = \%arg;
612	} else {	794	} else {
613	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' which is not available, postponing.\n";
614	}	796	}
615		797
616	$obj->{_attachment}{$name} = undef;	798	$obj->{_attachment}{$name} = undef;
617	}	799	}
618		800
…		…
620	if (ref $_[0]) {	802	if (ref $_[0]) {
621	_object_attach @_;	803	_object_attach @_;
622	} else {	804	} else {
623	_attach shift->_attach_registry, @_;	805	_attach shift->_attach_registry, @_;
624	}	806	}
		807	_recalc_want;
625	};	808	};
626		809
627	# all those should be optimised	810	# all those should be optimised
628	sub cf::attachable::detach {	811	sub cf::attachable::detach {
629	my ($obj, $name) = @_;	812	my ($obj, $name) = @_;
…		…
632	delete $obj->{_attachment}{$name};	815	delete $obj->{_attachment}{$name};
633	reattach ($obj);	816	reattach ($obj);
634	} else {	817	} else {
635	Carp::croak "cannot, currently, detach class attachments";	818	Carp::croak "cannot, currently, detach class attachments";
636	}	819	}
		820	_recalc_want;
637	};	821	};
638		822
639	sub cf::attachable::attached {	823	sub cf::attachable::attached {
640	my ($obj, $name) = @_;	824	my ($obj, $name) = @_;
641		825
…		…
814	or return;	998	or return;
815	$av = eval { (Storable::thaw $av)->{objs} };	999	$av = eval { (Storable::thaw $av)->{objs} };
816	}	1000	}
817		1001
818	warn sprintf "loading %s (%d)\n",	1002	warn sprintf "loading %s (%d)\n",
819	$filename, length $data, scalar @{$av || []};#d#	1003	$filename, length $data, scalar @{$av || []};
820	return ($data, $av);	1004	return ($data, $av);
821	}	1005	}
		1006
		1007	=head2 COMMAND CALLBACKS
		1008
		1009	=over 4
		1010
		1011	=cut
822		1012
823	#############################################################################	1013	#############################################################################
824	# command handling &c	1014	# command handling &c
825		1015
826	=item cf::register_command $name => \&callback($ob,$args);	1016	=item cf::register_command $name => \&callback($ob,$args);
…		…
839	push @{ $COMMAND{$name} }, [$caller, $cb];	1029	push @{ $COMMAND{$name} }, [$caller, $cb];
840	}	1030	}
841		1031
842	=item cf::register_extcmd $name => \&callback($pl,$packet);	1032	=item cf::register_extcmd $name => \&callback($pl,$packet);
843		1033
844	Register a callbackf ro execution when the client sends an extcmd packet.	1034	Register a callback fro execution when the client sends an extcmd packet.
845		1035
846	If the callback returns something, it is sent back as if reply was being	1036	If the callback returns something, it is sent back as if reply was being
847	called.	1037	called.
848		1038
849	=cut	1039	=cut
…		…
884		1074
885	cf::override;	1075	cf::override;
886	},	1076	},
887	);	1077	);
888		1078
889	sub load_extension {
890	my ($path) = @_;
891
892	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
893	my $base = $1;
894	my $pkg = $1;
895	$pkg =~ s/[^[:word:]]/_/g;
896	$pkg = "ext::$pkg";
897
898	warn "... loading '$path' into '$pkg'\n";
899
900	open my $fh, "<:utf8", $path
901	or die "$path: $!";
902
903	my $source =
904	"package $pkg; use strict; use utf8;\n"
905	. "#line 1 \"$path\"\n{\n"
906	. (do { local $/; <$fh> })
907	. "\n};\n1";
908
909	unless (eval $source) {
910	my $msg = $@ ? "$path: $@\n"
911	: "extension disabled.\n";
912	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
913	warn $@;
914	warn "mandatory extension failed to load, exiting.\n";
915	exit 1;
916	}
917	die $@;
918	}
919
920	push @EXTS, $pkg;
921	}
922
923	sub load_extensions {	1079	sub load_extensions {
		1080	cf::sync_job {
		1081	my %todo;
		1082
924	for my $ext (<$LIBDIR/*.ext>) {	1083	for my $path (<$LIBDIR/*.ext>) {
925	next unless -r $ext;	1084	next unless -r $path;
926	eval {	1085
927	load_extension $ext;	1086	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1087	my $base = $1;
		1088	my $pkg = $1;
		1089	$pkg =~ s/[^[:word:]]/_/g;
		1090	$pkg = "ext::$pkg";
		1091
		1092	open my $fh, "<:utf8", $path
		1093	or die "$path: $!";
		1094
		1095	my $source = do { local $/; <$fh> };
		1096
		1097	my %ext = (
		1098	path => $path,
		1099	base => $base,
		1100	pkg => $pkg,
		1101	);
		1102
		1103	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1104	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1105
		1106	$ext{source} =
		1107	"package $pkg; use strict; use utf8;\n"
		1108	. "#line 1 \"$path\"\n{\n"
		1109	. $source
		1110	. "\n};\n1";
		1111
		1112	$todo{$base} = \%ext;
		1113	}
		1114
		1115	my %done;
		1116	while (%todo) {
		1117	my $progress;
		1118
		1119	while (my ($k, $v) = each %todo) {
		1120	for (split /,\s*/, $v->{meta}{depends}) {
		1121	goto skip
		1122	unless exists $done{$_};
		1123	}
		1124
		1125	warn "... loading '$k' into '$v->{pkg}'\n";
		1126
		1127	unless (eval $v->{source}) {
		1128	my $msg = $@ ? "$v->{path}: $@\n"
		1129	: "$v->{base}: extension inactive.\n";
		1130
		1131	if (exists $v->{meta}{mandatory}) {
		1132	warn $msg;
		1133	warn "mandatory extension failed to load, exiting.\n";
		1134	exit 1;
		1135	}
		1136
		1137	warn $msg;
		1138	}
		1139
		1140	$done{$k} = delete $todo{$k};
		1141	push @EXTS, $v->{pkg};
		1142	$progress = 1;
928	1	1143	}
929	} or warn "$ext not loaded: $@";	1144
		1145	skip:
		1146	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1147	unless $progress;
		1148	}
930	}	1149	};
931	}	1150	}
932		1151
933	#############################################################################	1152	#############################################################################
934		1153
		1154	=back
		1155
935	=head2 CORE EXTENSIONS	1156	=head2 CORE EXTENSIONS
936		1157
937	Functions and methods that extend core crossfire objects.	1158	Functions and methods that extend core crossfire objects.
938		1159
939	=cut	1160	=cut
…		…
951	Returns the given player object, loading it if necessary (might block).	1172	Returns the given player object, loading it if necessary (might block).
952		1173
953	=cut	1174	=cut
954		1175
955	sub playerdir($) {	1176	sub playerdir($) {
956	cf::localdir	1177	"$PLAYERDIR/"
957	. "/"
958	. cf::playerdir
959	. "/"
960	. (ref $_[0] ? $_[0]->ob->name : $_[0])	1178	. (ref $_[0] ? $_[0]->ob->name : $_[0])
961	}	1179	}
962		1180
963	sub path($) {	1181	sub path($) {
964	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];	1182	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
…		…
1084	while and may block, so not sync_job-capable, ever.	1302	while and may block, so not sync_job-capable, ever.
1085		1303
1086	=cut	1304	=cut
1087		1305
1088	sub list_logins {	1306	sub list_logins {
1089	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir	1307	my $dirs = aio_readdir $PLAYERDIR
1090	or return [];	1308	or return [];
1091		1309
1092	my @logins;	1310	my @logins;
1093		1311
1094	for my $login (@$dirs) {	1312	for my $login (@$dirs) {
…		…
1165		1383
1166	package cf::region;	1384	package cf::region;
1167		1385
1168	=item cf::region::find_by_path $path	1386	=item cf::region::find_by_path $path
1169		1387
1170	Tries to decuce the probable region for a map knowing only its path.	1388	Tries to decuce the likely region for a map knowing only its path.
1171		1389
1172	=cut	1390	=cut
1173		1391
1174	sub find_by_path($) {	1392	sub find_by_path($) {
1175	my ($path) = @_;	1393	my ($path) = @_;
…		…
1249	my ($self, $merge) = @_;	1467	my ($self, $merge) = @_;
1250		1468
1251	# we have to keep some variables in memory intact	1469	# we have to keep some variables in memory intact
1252	local $self->{path};	1470	local $self->{path};
1253	local $self->{load_path};	1471	local $self->{load_path};
1254	local $self->{deny_save};
1255	local $self->{deny_reset};
1256		1472
1257	$self->SUPER::thawer_merge ($merge);	1473	$self->SUPER::thawer_merge ($merge);
1258	}	1474	}
1259		1475
1260	sub normalise {	1476	sub normalise {
…		…
1332		1548
1333	# the original (read-only) location	1549	# the original (read-only) location
1334	sub load_path {	1550	sub load_path {
1335	my ($self) = @_;	1551	my ($self) = @_;
1336		1552
1337	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}	1553	"$MAPDIR/$self->{path}.map"
1338	}	1554	}
1339		1555
1340	# the temporary/swap location	1556	# the temporary/swap location
1341	sub save_path {	1557	sub save_path {
1342	my ($self) = @_;	1558	my ($self) = @_;
1343		1559
1344	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1560	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1345	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path	1561	"$TMPDIR/$path.map"
1346	}	1562	}
1347		1563
1348	# the unique path, undef == no special unique path	1564	# the unique path, undef == no special unique path
1349	sub uniq_path {	1565	sub uniq_path {
1350	my ($self) = @_;	1566	my ($self) = @_;
1351		1567
1352	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1568	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1353	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path	1569	"$UNIQUEDIR/$path"
1354	}	1570	}
1355		1571
1356	# and all this just because we cannot iterate over	1572	# and all this just because we cannot iterate over
1357	# all maps in C++...	1573	# all maps in C++...
1358	sub change_all_map_light {	1574	sub change_all_map_light {
1359	my ($change) = @_;	1575	my ($change) = @_;
1360		1576
1361	$_->change_map_light ($change)	1577	$_->change_map_light ($change)
1362	for grep $_->outdoor, values %cf::MAP;	1578	for grep $_->outdoor, values %cf::MAP;
		1579	}
		1580
		1581	sub decay_objects {
		1582	my ($self) = @_;
		1583
		1584	return if $self->{deny_reset};
		1585
		1586	$self->do_decay_objects;
1363	}	1587	}
1364		1588
1365	sub unlink_save {	1589	sub unlink_save {
1366	my ($self) = @_;	1590	my ($self) = @_;
1367		1591
…		…
1425	$self->load_header_orig	1649	$self->load_header_orig
1426	or return;	1650	or return;
1427	$self->prepare_orig;	1651	$self->prepare_orig;
1428	}	1652	}
1429		1653
		1654	$self->{deny_reset} = 1
		1655	if $self->no_reset;
		1656
1430	$self->default_region (cf::region::find_by_path $self->{path})	1657	$self->default_region (cf::region::find_by_path $self->{path})
1431	unless $self->default_region;	1658	unless $self->default_region;
1432		1659
1433	1	1660	1
1434	}	1661	}
…		…
1449	$map->{last_save} = $cf::RUNTIME;	1676	$map->{last_save} = $cf::RUNTIME;
1450		1677
1451	$map->load_header	1678	$map->load_header
1452	or return;	1679	or return;
1453		1680
1454	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1681	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1455	# doing this can freeze the server in a sync job, obviously	1682	# doing this can freeze the server in a sync job, obviously
1456	#$cf::WAIT_FOR_TICK->wait;	1683	#$cf::WAIT_FOR_TICK->wait;
1457	$map->reset;	1684	$map->reset;
1458	undef $guard;	1685	undef $guard;
1459	return find $path;	1686	return find $path;
…		…
1470	my ($self) = @_;	1697	my ($self) = @_;
1471		1698
1472	local $self->{deny_reset} = 1; # loading can take a long time	1699	local $self->{deny_reset} = 1; # loading can take a long time
1473		1700
1474	my $path = $self->{path};	1701	my $path = $self->{path};
		1702
		1703	{
1475	my $guard = cf::lock_acquire "map_load:$path";	1704	my $guard = cf::lock_acquire "map_load:$path";
1476		1705
1477	return if $self->in_memory != cf::MAP_SWAPPED;	1706	return if $self->in_memory != cf::MAP_SWAPPED;
1478		1707
1479	$self->in_memory (cf::MAP_LOADING);	1708	$self->in_memory (cf::MAP_LOADING);
1480		1709
1481	$self->alloc;	1710	$self->alloc;
1482		1711
1483	$self->pre_load;	1712	$self->pre_load;
1484	Coro::cede;
1485
1486	$self->_load_objects ($self->{load_path}, 1)
1487	or return;
1488
1489	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1490	if delete $self->{load_original};
1491
1492	if (my $uniq = $self->uniq_path) {
1493	utf8::encode $uniq;
1494	if (aio_open $uniq, O_RDONLY, 0) {
1495	$self->clear_unique_items;
1496	$self->_load_objects ($uniq, 0);
1497	}
1498	}
1499
1500	Coro::cede;
1501	# now do the right thing for maps
1502	$self->link_multipart_objects;
1503	Coro::cede;
1504
1505	unless ($self->{deny_activate}) {
1506	$self->decay_objects;
1507	$self->fix_auto_apply;
1508	$self->update_buttons;
1509	Coro::cede;	1713	Coro::cede;
1510	$self->set_darkness_map;	1714
		1715	$self->_load_objects ($self->{load_path}, 1)
		1716	or return;
		1717
		1718	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1719	if delete $self->{load_original};
		1720
		1721	if (my $uniq = $self->uniq_path) {
		1722	utf8::encode $uniq;
		1723	if (aio_open $uniq, O_RDONLY, 0) {
		1724	$self->clear_unique_items;
		1725	$self->_load_objects ($uniq, 0);
		1726	}
		1727	}
		1728
		1729	Coro::cede;
		1730	# now do the right thing for maps
		1731	$self->link_multipart_objects;
1511	$self->difficulty ($self->estimate_difficulty)	1732	$self->difficulty ($self->estimate_difficulty)
1512	unless $self->difficulty;	1733	unless $self->difficulty;
1513	Coro::cede;	1734	Coro::cede;
		1735
		1736	unless ($self->{deny_activate}) {
		1737	$self->decay_objects;
		1738	$self->fix_auto_apply;
		1739	$self->update_buttons;
		1740	Coro::cede;
		1741	$self->set_darkness_map;
		1742	Coro::cede;
1514	$self->activate;	1743	$self->activate;
1515	Coro::cede;	1744	}
		1745
		1746	$self->in_memory (cf::MAP_IN_MEMORY);
1516	}	1747	}
1517		1748
1518	$self->post_load;	1749	$self->post_load;
1519	Coro::cede;
1520
1521	$self->in_memory (cf::MAP_IN_MEMORY);
1522	}	1750	}
1523		1751
1524	sub customise_for {	1752	sub customise_for {
1525	my ($self, $ob) = @_;	1753	my ($self, $ob) = @_;
1526		1754
1527	return find "~" . $ob->name . "/" . $self->{path}	1755	return find "~" . $ob->name . "/" . $self->{path}
1528	if $self->per_player;	1756	if $self->per_player;
		1757
		1758	# return find "?party/" . $ob->name . "/" . $self->{path}
		1759	# if $self->per_party;
1529		1760
1530	$self	1761	$self
1531	}	1762	}
1532		1763
1533	# find and load all maps in the 3x3 area around a map	1764	# find and load all maps in the 3x3 area around a map
…		…
1644		1875
1645	sub reset_at {	1876	sub reset_at {
1646	my ($self) = @_;	1877	my ($self) = @_;
1647		1878
1648	# TODO: safety, remove and allow resettable per-player maps	1879	# TODO: safety, remove and allow resettable per-player maps
1649	return 1e99 if $self->isa ("ext::map_per_player");#d#
1650	return 1e99 if $self->{deny_reset};	1880	return 1e99 if $self->{deny_reset};
1651		1881
1652	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1882	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1653	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	1883	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1654		1884
…		…
1665	my ($self) = @_;	1895	my ($self) = @_;
1666		1896
1667	my $lock = cf::lock_acquire "map_data:$self->{path}";	1897	my $lock = cf::lock_acquire "map_data:$self->{path}";
1668		1898
1669	return if $self->players;	1899	return if $self->players;
1670	return if $self->isa ("ext::map_per_player");#d#
1671		1900
1672	warn "resetting map ", $self->path;#d#	1901	warn "resetting map ", $self->path;
1673		1902
1674	$self->in_memory (cf::MAP_SWAPPED);	1903	$self->in_memory (cf::MAP_SWAPPED);
1675		1904
1676	# need to save uniques path	1905	# need to save uniques path
1677	unless ($self->{deny_save}) {	1906	unless ($self->{deny_save}) {
…		…
1709	$cf::MAP{$self->path} = $self;	1938	$cf::MAP{$self->path} = $self;
1710		1939
1711	$self->reset; # polite request, might not happen	1940	$self->reset; # polite request, might not happen
1712	}	1941	}
1713		1942
		1943	=item $maps = cf::map::tmp_maps
		1944
		1945	Returns an arrayref with all map paths of currently instantiated and saved
		1946	maps. May block.
		1947
		1948	=cut
		1949
		1950	sub tmp_maps() {
		1951	[
		1952	map {
		1953	utf8::decode $_;
		1954	/\.map$/
		1955	? normalise $_
		1956	: ()
		1957	} @{ aio_readdir $TMPDIR or [] }
		1958	]
		1959	}
		1960
		1961	=item $maps = cf::map::random_maps
		1962
		1963	Returns an arrayref with all map paths of currently instantiated and saved
		1964	random maps. May block.
		1965
		1966	=cut
		1967
		1968	sub random_maps() {
		1969	[
		1970	map {
		1971	utf8::decode $_;
		1972	/\.map$/
		1973	? normalise "?random/$_"
		1974	: ()
		1975	} @{ aio_readdir $RANDOMDIR or [] }
		1976	]
		1977	}
		1978
1714	=item cf::map::unique_maps	1979	=item cf::map::unique_maps
1715		1980
1716	Returns an arrayref of paths of all shared maps that have	1981	Returns an arrayref of paths of all shared maps that have
1717	instantiated unique items. May block.	1982	instantiated unique items. May block.
1718		1983
1719	=cut	1984	=cut
1720		1985
1721	sub unique_maps() {	1986	sub unique_maps() {
1722	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir	1987	[
1723	or return;	1988	map {
1724
1725	my @paths;
1726
1727	for (@$files) {
1728	utf8::decode $_;	1989	utf8::decode $_;
1729	next if /\.pst$/;	1990	/\.map$/
1730	next unless /^$PATH_SEP/o;	1991	? normalise $_
1731		1992	: ()
1732	push @paths, cf::map::normalise $_;	1993	} @{ aio_readdir $UNIQUEDIR or [] }
1733	}	1994	]
1734
1735	\@paths
1736	}	1995	}
1737		1996
1738	package cf;	1997	package cf;
1739		1998
1740	=back	1999	=back
…		…
1846	$self->deactivate_recursive;	2105	$self->deactivate_recursive;
1847		2106
1848	return if UNIVERSAL::isa $self->map, "ext::map_link";	2107	return if UNIVERSAL::isa $self->map, "ext::map_link";
1849		2108
1850	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2109	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1851	if $self->map;	2110	if $self->map && $self->map->{path} ne "{link}";
1852		2111
1853	$self->enter_map ($LINK_MAP || link_map, 10, 10);	2112	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1854	}	2113	}
1855		2114
1856	sub cf::object::player::leave_link {	2115	sub cf::object::player::leave_link {
1857	my ($self, $map, $x, $y) = @_;	2116	my ($self, $map, $x, $y) = @_;
		2117
		2118	return unless $self->contr->active;
1858		2119
1859	my $link_pos = delete $self->{_link_pos};	2120	my $link_pos = delete $self->{_link_pos};
1860		2121
1861	unless ($map) {	2122	unless ($map) {
1862	# restore original map position	2123	# restore original map position
…		…
1885		2146
1886	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2147	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1887	$self->enter_map ($map, $x, $y);	2148	$self->enter_map ($map, $x, $y);
1888	}	2149	}
1889		2150
1890	cf::player->attach (
1891	on_logout => sub {
1892	my ($pl) = @_;
1893
1894	# abort map switching before logout
1895	if ($pl->ob->{_link_pos}) {
1896	cf::sync_job {
1897	$pl->ob->leave_link
1898	};
1899	}
1900	},
1901	on_login => sub {
1902	my ($pl) = @_;
1903
1904	# try to abort aborted map switching on player login :)
1905	# should happen only on crashes
1906	if ($pl->ob->{_link_pos}) {
1907	$pl->ob->enter_link;
1908	(async {
1909	$pl->ob->reply (undef,
1910	"There was an internal problem at your last logout, "
1911	. "the server will try to bring you to your intended destination in a second.",
1912	cf::NDI_RED);
1913	# we need this sleep as the login has a concurrent enter_exit running
1914	# and this sleep increases chances of the player not ending up in scorn
1915	Coro::Timer::sleep 1;
1916	$pl->ob->leave_link;
1917	})->prio (2);
1918	}
1919	},
1920	);
1921
1922	=item $player_object->goto ($path, $x, $y)	2151	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1923		2152
		2153	Moves the player to the given map-path and coordinates by first freezing
		2154	her, loading and preparing them map, calling the provided $check callback
		2155	that has to return the map if sucecssful, and then unfreezes the player on
		2156	the new (success) or old (failed) map position.
		2157
1924	=cut	2158	=cut
		2159
		2160	our $GOTOGEN;
1925		2161
1926	sub cf::object::player::goto {	2162	sub cf::object::player::goto {
1927	my ($self, $path, $x, $y) = @_;	2163	my ($self, $path, $x, $y, $check) = @_;
		2164
		2165	# do generation counting so two concurrent goto's will be executed in-order
		2166	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1928		2167
1929	$self->enter_link;	2168	$self->enter_link;
1930		2169
1931	(async {	2170	(async {
1932	my $map = eval {	2171	my $map = eval {
1933	my $map = cf::map::find $path;	2172	my $map = cf::map::find $path;
		2173
		2174	if ($map) {
1934	$map = $map->customise_for ($self) if $map;	2175	$map = $map->customise_for ($self);
		2176	$map = $check->($map) if $check && $map;
		2177	} else {
		2178	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2179	}
		2180
1935	$map	2181	$map
		2182	};
		2183
		2184	if ($@) {
		2185	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2186	LOG llevError | logBacktrace, Carp::longmess $@;
1936	} or	2187	}
1937	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1938		2188
		2189	if ($gen == $self->{_goto_generation}) {
		2190	delete $self->{_goto_generation};
1939	$self->leave_link ($map, $x, $y);	2191	$self->leave_link ($map, $x, $y);
		2192	}
1940	})->prio (1);	2193	})->prio (1);
1941	}	2194	}
1942		2195
1943	=item $player_object->enter_exit ($exit_object)	2196	=item $player_object->enter_exit ($exit_object)
1944		2197
…		…
1983		2236
1984	$rmp->{random_seed} ||= $exit->random_seed;	2237	$rmp->{random_seed} ||= $exit->random_seed;
1985		2238
1986	my $data = cf::to_json $rmp;	2239	my $data = cf::to_json $rmp;
1987	my $md5 = Digest::MD5::md5_hex $data;	2240	my $md5 = Digest::MD5::md5_hex $data;
1988	my $meta = "$cf::RANDOM_MAPS/$md5.meta";	2241	my $meta = "$RANDOMDIR/$md5.meta";
1989		2242
1990	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {	2243	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1991	aio_write $fh, 0, (length $data), $data, 0;	2244	aio_write $fh, 0, (length $data), $data, 0;
1992	undef $fh;	2245	undef $fh;
1993	aio_rename "$meta~", $meta;	2246	aio_rename "$meta~", $meta;
…		…
2258	=back	2511	=back
2259		2512
2260	=cut	2513	=cut
2261		2514
2262	#############################################################################	2515	#############################################################################
2263
2264	=head2 EXTENSION DATABASE SUPPORT
2265
2266	Crossfire maintains a very simple database for extension use. It can
2267	currently store anything that can be serialised using Storable, which
2268	excludes objects.
2269
2270	The parameter C<$family> should best start with the name of the extension
2271	using it, it should be unique.
2272
2273	=over 4
2274
2275	=item $value = cf::db_get $family => $key
2276
2277	Returns a single value from the database.
2278
2279	=item cf::db_put $family => $key => $value
2280
2281	Stores the given C<$value> in the family.
2282
2283	=cut
2284
2285	our $DB;
2286
2287	sub db_init {
2288	unless ($DB) {
2289	$DB = BDB::db_create $DB_ENV;
2290
2291	cf::sync_job {
2292	eval {
2293	$DB->set_flags (BDB::CHKSUM);
2294
2295	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2296	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2297	cf::cleanup "db_open(db): $!" if $!;
2298	};
2299	cf::cleanup "db_open(db): $@" if $@;
2300	};
2301
2302	my $path = cf::localdir . "/database.pst";
2303	if (stat $path) {
2304	cf::sync_job {
2305	my $pst = Storable::retrieve $path;
2306
2307	cf::db_put (board => data => $pst->{board});
2308	cf::db_put (guildrules => data => $pst->{guildrules});
2309	cf::db_put (rent => balance => $pst->{rent}{balance});
2310	BDB::db_env_txn_checkpoint $DB_ENV;
2311
2312	unlink $path;
2313	};
2314	}
2315	}
2316	}
2317
2318	sub db_get($$) {
2319	my $key = "$_[0]/$_[1]";
2320
2321	cf::sync_job {
2322	BDB::db_get $DB, undef, $key, my $data;
2323
2324	$! ? ()
2325	: Compress::LZF::sthaw $data
2326	}
2327	}
2328
2329	sub db_put($$$) {
2330	BDB::dbreq_pri 4;
2331	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
2332	}
2333
2334	#############################################################################
2335	# the server's init and main functions	2516	# the server's init and main functions
2336		2517
2337	sub load_facedata {	2518	sub load_facedata($) {
2338	my $path = sprintf "%s/facedata", cf::datadir;	2519	my ($path) = @_;
2339		2520
2340	warn "loading facedata from $path\n";	2521	warn "loading facedata from $path\n";
2341		2522
2342	my $facedata;	2523	my $facedata;
2343	0 < aio_load $path, $facedata	2524	0 < aio_load $path, $facedata
…		…
2384	}	2565	}
2385		2566
2386	1	2567	1
2387	}	2568	}
2388		2569
2389	our $archetypes_loaded;	2570	sub reload_regions {
		2571	load_resource_file "$MAPDIR/regions"
		2572	or die "unable to load regions file\n";
		2573	}
2390		2574
		2575	sub reload_facedata {
		2576	load_facedata "$DATADIR/facedata"
		2577	or die "unable to load facedata\n";
		2578	}
		2579
2391	sub load_archetypes {	2580	sub reload_archetypes {
2392	return 1 if $archetypes_loaded++; # current can only load them once	2581	load_resource_file "$DATADIR/archetypes"
2393	# load_archetype_file sprintf "%s/archetypes", cf::datadir;	2582	or die "unable to load archetypes\n";
2394	load_archetype_file sprintf "%s/archetypes", cf::datadir
2395	}	2583	}
2396		2584
2397	sub load_treasures {	2585	sub reload_treasures {
2398	load_treasure_file sprintf "%s/treasures", cf::datadir	2586	load_resource_file "$DATADIR/treasures"
		2587	or die "unable to load treasurelists\n";
2399	}	2588	}
2400		2589
2401	sub reload_resources {	2590	sub reload_resources {
2402	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir	2591	warn "reloading resource files...\n";
2403	or die "unable to load regions file\n";	2592
		2593	reload_regions;
2404	load_facedata	2594	reload_facedata;
2405	or die "unable to load facedata\n";	2595	#reload_archetypes;#d#
2406	load_archetypes	2596	reload_archetypes;
2407	or die "unable to load archetypes\n";
2408	load_treasures	2597	reload_treasures;
2409	or die "unable to load treasurelists\n";	2598
		2599	warn "finished reloading resource files\n";
2410	}	2600	}
2411		2601
2412	sub init {	2602	sub init {
2413	reload_resources;	2603	reload_resources;
2414	}	2604	}
2415		2605
2416	sub cfg_load {	2606	sub cfg_load {
2417	open my $fh, "<:utf8", cf::confdir . "/config"	2607	open my $fh, "<:utf8", "$CONFDIR/config"
2418	or return;	2608	or return;
2419		2609
2420	local $/;	2610	local $/;
2421	*CFG = YAML::Syck::Load <$fh>;	2611	*CFG = YAML::Syck::Load <$fh>;
2422		2612
…		…
2467	},	2657	},
2468	);	2658	);
2469	}	2659	}
2470	}	2660	}
2471		2661
		2662	sub write_runtime {
		2663	my $runtime = "$LOCALDIR/runtime";
		2664
		2665	# first touch the runtime file to show we are still running:
		2666	# the fsync below can take a very very long time.
		2667
		2668	IO::AIO::aio_utime $runtime, undef, undef;
		2669
		2670	my $guard = cf::lock_acquire "write_runtime";
		2671
		2672	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2673	or return;
		2674
		2675	my $value = $cf::RUNTIME + 90 + 10;
		2676	# 10 is the runtime save interval, for a monotonic clock
		2677	# 60 allows for the watchdog to kill the server.
		2678
		2679	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2680	and return;
		2681
		2682	# always fsync - this file is important
		2683	aio_fsync $fh
		2684	and return;
		2685
		2686	# touch it again to show we are up-to-date
		2687	aio_utime $fh, undef, undef;
		2688
		2689	close $fh
		2690	or return;
		2691
		2692	aio_rename "$runtime~", $runtime
		2693	and return;
		2694
		2695	warn "runtime file written.\n";
		2696
		2697	1
		2698	}
		2699
2472	sub emergency_save() {	2700	sub emergency_save() {
2473	my $freeze_guard = cf::freeze_mainloop;	2701	my $freeze_guard = cf::freeze_mainloop;
2474		2702
2475	warn "enter emergency perl save\n";	2703	warn "enter emergency perl save\n";
2476		2704
…		…
2507		2735
2508	warn Carp::longmess "post_cleanup backtrace"	2736	warn Carp::longmess "post_cleanup backtrace"
2509	if $make_core;	2737	if $make_core;
2510	}	2738	}
2511		2739
2512	sub reload() {	2740	sub do_reload_perl() {
2513	# can/must only be called in main	2741	# can/must only be called in main
2514	if ($Coro::current != $Coro::main) {	2742	if ($Coro::current != $Coro::main) {
2515	warn "can only reload from main coroutine";	2743	warn "can only reload from main coroutine";
2516	return;	2744	return;
2517	}	2745	}
…		…
2592	Symbol::delete_package "safe::$_"	2820	Symbol::delete_package "safe::$_"
2593	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	2821	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2594		2822
2595	warn "unloading cf.pm \"a bit\"";	2823	warn "unloading cf.pm \"a bit\"";
2596	delete $INC{"cf.pm"};	2824	delete $INC{"cf.pm"};
		2825	delete $INC{"cf/pod.pm"};
2597		2826
2598	# don't, removes xs symbols, too,	2827	# don't, removes xs symbols, too,
2599	# and global variables created in xs	2828	# and global variables created in xs
2600	#Symbol::delete_package __PACKAGE__;	2829	#Symbol::delete_package __PACKAGE__;
2601		2830
…		…
2616	warn "reattaching attachments to maps";	2845	warn "reattaching attachments to maps";
2617	reattach $_ for values %MAP;	2846	reattach $_ for values %MAP;
2618	warn "reattaching attachments to players";	2847	warn "reattaching attachments to players";
2619	reattach $_ for values %PLAYER;	2848	reattach $_ for values %PLAYER;
2620		2849
2621	warn "loading reloadable resources";
2622	reload_resources;
2623
2624	warn "leaving sync_job";	2850	warn "leaving sync_job";
2625		2851
2626	1	2852	1
2627	} or do {	2853	} or do {
2628	warn $@;	2854	warn $@;
…		…
2633	warn "reloaded";	2859	warn "reloaded";
2634	};	2860	};
2635		2861
2636	our $RELOAD_WATCHER; # used only during reload	2862	our $RELOAD_WATCHER; # used only during reload
2637		2863
		2864	sub reload_perl() {
		2865	# doing reload synchronously and two reloads happen back-to-back,
		2866	# coro crashes during coro_state_free->destroy here.
		2867
		2868	$RELOAD_WATCHER ||= Event->timer (
		2869	reentrant => 0,
		2870	after => 0,
		2871	data => WF_AUTOCANCEL,
		2872	cb => sub {
		2873	do_reload_perl;
		2874	undef $RELOAD_WATCHER;
		2875	},
		2876	);
		2877	}
		2878
2638	register_command "reload" => sub {	2879	register_command "reload" => sub {
2639	my ($who, $arg) = @_;	2880	my ($who, $arg) = @_;
2640		2881
2641	if ($who->flag (FLAG_WIZ)) {	2882	if ($who->flag (FLAG_WIZ)) {
2642	$who->message ("reloading server.");	2883	$who->message ("reloading server.");
2643		2884	async { reload_perl };
2644	# doing reload synchronously and two reloads happen back-to-back,
2645	# coro crashes during coro_state_free->destroy here.
2646
2647	$RELOAD_WATCHER ||= Event->timer (
2648	reentrant => 0,
2649	after => 0,
2650	data => WF_AUTOCANCEL,
2651	cb => sub {
2652	reload;
2653	undef $RELOAD_WATCHER;
2654	},
2655	);
2656	}	2885	}
2657	};	2886	};
2658		2887
2659	unshift @INC, $LIBDIR;	2888	unshift @INC, $LIBDIR;
2660		2889
…		…
2679	my $signal = new Coro::Signal;	2908	my $signal = new Coro::Signal;
2680	push @WAIT_FOR_TICK_BEGIN, $signal;	2909	push @WAIT_FOR_TICK_BEGIN, $signal;
2681	$signal->wait;	2910	$signal->wait;
2682	}	2911	}
2683		2912
		2913	my $min = 1e6;#d#
		2914	my $avg = 10;
2684	$TICK_WATCHER = Event->timer (	2915	$TICK_WATCHER = Event->timer (
2685	reentrant => 0,	2916	reentrant => 0,
2686	parked => 1,	2917	parked => 1,
2687	prio => 0,	2918	prio => 0,
2688	at => $NEXT_TICK || $TICK,	2919	at => $NEXT_TICK || $TICK,
…		…
2692	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	2923	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2693	unless ++$bug_warning > 10;	2924	unless ++$bug_warning > 10;
2694	return;	2925	return;
2695	}	2926	}
2696		2927
2697	$NOW = Event::time;	2928	$NOW = $tick_start = Event::time;
2698		2929
2699	cf::server_tick; # one server iteration	2930	cf::server_tick; # one server iteration
		2931
		2932	0 && sync_job {#d#
		2933	for(1..10) {
		2934	my $t = Event::time;
		2935	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2936	or die;
		2937
		2938	$map->width (50);
		2939	$map->height (50);
		2940	$map->alloc;
		2941	$map->_load_objects ("/tmp/x.map", 1);
		2942	my $t = Event::time - $t;
		2943
		2944	#next unless $t < 0.0013;#d#
		2945	if ($t < $min) {
		2946	$min = $t;
		2947	}
		2948	$avg = $avg * 0.99 + $t * 0.01;
		2949	}
		2950	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2951	exit 0;
		2952	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2953	};
		2954
2700	$RUNTIME += $TICK;	2955	$RUNTIME += $TICK;
2701	$NEXT_TICK += $TICK;	2956	$NEXT_TICK += $TICK;
2702		2957
2703	if ($NOW >= $NEXT_RUNTIME_WRITE) {	2958	if ($NOW >= $NEXT_RUNTIME_WRITE) {
2704	$NEXT_RUNTIME_WRITE = $NOW + 10;	2959	$NEXT_RUNTIME_WRITE = $NOW + 10;
…		…
2706	write_runtime	2961	write_runtime
2707	or warn "ERROR: unable to write runtime file: $!";	2962	or warn "ERROR: unable to write runtime file: $!";
2708	};	2963	};
2709	}	2964	}
2710		2965
		2966	# my $AFTER = Event::time;
		2967	# warn $AFTER - $NOW;#d#
		2968
2711	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	2969	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
2712	$sig->send;	2970	$sig->send;
2713	}	2971	}
2714	while (my $sig = shift @WAIT_FOR_TICK) {	2972	while (my $sig = shift @WAIT_FOR_TICK) {
2715	$sig->send;	2973	$sig->send;
2716	}	2974	}
2717		2975
2718	# my $AFTER = Event::time;	2976	$NOW = Event::time;
2719	# warn $AFTER - $NOW;#d#
2720		2977
2721	# if we are delayed by four ticks or more, skip them all	2978	# if we are delayed by four ticks or more, skip them all
2722	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2979	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2723		2980
2724	$TICK_WATCHER->at ($NEXT_TICK);	2981	$TICK_WATCHER->at ($NEXT_TICK);
2725	$TICK_WATCHER->start;	2982	$TICK_WATCHER->start;
		2983
		2984	$LOAD = ($NOW - $tick_start) / $TICK;
		2985	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2986
		2987	_post_tick;
		2988
		2989
2726	},	2990	},
2727	);	2991	);
2728		2992
2729	{	2993	{
2730	BDB::max_poll_time $TICK * 0.1;	2994	BDB::max_poll_time $TICK * 0.1;
…		…
2758		3022
2759	cf::sync_job {	3023	cf::sync_job {
2760	eval {	3024	eval {
2761	BDB::db_env_open	3025	BDB::db_env_open
2762	$DB_ENV,	3026	$DB_ENV,
2763	$BDB_ENV_DIR,	3027	$BDBDIR,
2764	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN	3028	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2765	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,	3029	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2766	0666;	3030	0666;
2767		3031
2768	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;	3032	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
2769		3033
2770	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);	3034	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
2771	$DB_ENV->set_lk_detect;	3035	$DB_ENV->set_lk_detect;
2772	};	3036	};
2773		3037
…		…
2789	prio => 6,	3053	prio => 6,
2790	cb => \&IO::AIO::poll_cb,	3054	cb => \&IO::AIO::poll_cb,
2791	);	3055	);
2792	}	3056	}
2793		3057
		3058	my $_log_backtrace;
		3059
		3060	sub _log_backtrace {
		3061	my ($msg, @addr) = @_;
		3062
		3063	$msg =~ s/\n//;
		3064
		3065	# limit the # of concurrent backtraces
		3066	if ($_log_backtrace < 2) {
		3067	++$_log_backtrace;
		3068	async {
		3069	my @bt = fork_call {
		3070	@addr = map { sprintf "%x", $_ } @addr;
		3071	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3072	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3073	or die "addr2line: $!";
		3074
		3075	my @funcs;
		3076	my @res = <$fh>;
		3077	chomp for @res;
		3078	while (@res) {
		3079	my ($func, $line) = splice @res, 0, 2, ();
		3080	push @funcs, "[$func] $line";
		3081	}
		3082
		3083	@funcs
		3084	};
		3085
		3086	LOG llevInfo, "[ABT] $msg\n";
		3087	LOG llevInfo, "[ABT] $_\n" for @bt;
		3088	--$_log_backtrace;
		3089	};
		3090	} else {
		3091	LOG llevInfo, "[ABT] $msg\n";
		3092	LOG llevInfo, "[ABT] [suppressed]\n";
		3093	}
		3094	}
		3095
		3096	# load additional modules
		3097	use cf::pod;
		3098
2794	END { cf::emergency_save }	3099	END { cf::emergency_save }
2795		3100
2796	1	3101	1
2797		3102

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