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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.252 by root, Wed Apr 18 15:28:18 2007 UTC vs.
Revision 1.314 by root, Mon Jul 23 16:53:15 2007 UTC

…		…
20	use Coro::Signal;	20	use Coro::Signal;
21	use Coro::Semaphore;	21	use Coro::Semaphore;
22	use Coro::AIO;	22	use Coro::AIO;
23	use Coro::Storable;	23	use Coro::Storable;
24		24
		25	use JSON::XS 1.4 ();
25	use BDB ();	26	use BDB ();
26	use Data::Dumper;	27	use Data::Dumper;
27	use Digest::MD5;	28	use Digest::MD5;
28	use Fcntl;	29	use Fcntl;
29	use YAML::Syck ();	30	use YAML::Syck ();
30	use IO::AIO 2.32 ();	31	use IO::AIO 2.32 ();
31	use Time::HiRes;	32	use Time::HiRes;
32	use Compress::LZF;	33	use Compress::LZF;
		34	use Digest::MD5 ();
33		35
34	# configure various modules to our taste	36	# configure various modules to our taste
35	#	37	#
36	$Storable::canonical = 1; # reduce rsync transfers	38	$Storable::canonical = 1; # reduce rsync transfers
37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator	39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
…		…
49	our %COMMAND = ();	51	our %COMMAND = ();
50	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
51		53
52	our @EXTS = (); # list of extension package names	54	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	57	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	58	our %EXT_MAP = (); # pluggable maps
56		59
57	our $RELOAD; # number of reloads so far	60	our $RELOAD; # number of reloads so far
58	our @EVENT;	61	our @EVENT;
59	our $LIBDIR = datadir . "/ext";	62
		63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
60		74
61	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)	75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
62	our $TICK_WATCHER;	76	our $TICK_WATCHER;
63	our $AIO_POLL_WATCHER;	77	our $AIO_POLL_WATCHER;
64	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written	78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
…		…
75	our $RUNTIME;	89	our $RUNTIME;
76		90
77	our %PLAYER; # all users	91	our %PLAYER; # all users
78	our %MAP; # all maps	92	our %MAP; # all maps
79	our $LINK_MAP; # the special {link} map, which is always available	93	our $LINK_MAP; # the special {link} map, which is always available
80	our $RANDOM_MAPS = cf::localdir . "/random";
81	our $BDB_ENV_DIR = cf::localdir . "/db";
82		94
83	# 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 ∕
84	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
85		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 $tick_start; # for load detecting purposes
		101
86	binmode STDOUT;	102	binmode STDOUT;
87	binmode STDERR;	103	binmode STDERR;
88		104
89	# read virtual server time, if available	105	# read virtual server time, if available
90	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
91	open my $fh, "<", cf::localdir . "/runtime"	107	open my $fh, "<", "$LOCALDIR/runtime"
92	or die "unable to read runtime file: $!";	108	or die "unable to read runtime file: $!";
93	$RUNTIME = <$fh> + 0.;	109	$RUNTIME = <$fh> + 0.;
94	}	110	}
95		111
96	mkdir cf::localdir;	112	mkdir $_
97	mkdir cf::localdir . "/" . cf::playerdir;	113	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
98	mkdir cf::localdir . "/" . cf::tmpdir;
99	mkdir cf::localdir . "/" . cf::uniquedir;
100	mkdir $RANDOM_MAPS;
101	mkdir $BDB_ENV_DIR;
102		114
103	our $EMERGENCY_POSITION;	115	our $EMERGENCY_POSITION;
104		116
105	sub cf::map::normalise;	117	sub cf::map::normalise;
106		118
…		…
117	=item $cf::RUNTIME	129	=item $cf::RUNTIME
118		130
119	The time this server has run, starts at 0 and is increased by $cf::TICK on	131	The time this server has run, starts at 0 and is increased by $cf::TICK on
120	every server tick.	132	every server tick.
121		133
122	=item $cf::LIBDIR	134	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		135	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		136	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
123		137
124	The perl library directory, where extensions and cf-specific modules can	138	Various directories - "/etc", read-only install directory, perl-library
125	be found. It will be added to C<@INC> automatically.	139	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		140	unique-items directory, player file directory, random maps directory and
		141	database environment.
126		142
127	=item $cf::NOW	143	=item $cf::NOW
128		144
129	The time of the last (current) server tick.	145	The time of the last (current) server tick.
130		146
131	=item $cf::TICK	147	=item $cf::TICK
132		148
133	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
		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.
134		160
135	=item %cf::CFG	161	=item %cf::CFG
136		162
137	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
138	from wherever your confdir points to.	164	from wherever your confdir points to.
…		…
141		167
142	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only	168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
143	returns directly I<after> the tick processing (and consequently, can only wake one process	169	returns directly I<after> the tick processing (and consequently, can only wake one process
144	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.	170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
145		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
		177
146	=back	178	=back
147		179
148	=cut	180	=cut
149		181
150	BEGIN {	182	BEGIN {
…		…
152	my $msg = join "", @_;	184	my $msg = join "", @_;
153		185
154	$msg .= "\n"	186	$msg .= "\n"
155	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
156		188
157	$msg =~ s/([\x00-\x09\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;	189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
158		190
159	utf8::encode $msg;	191	utf8::encode $msg;
160	LOG llevError, $msg;	192	LOG llevError, $msg;
161	};	193	};
162	}	194	}
…		…
164	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
165	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
166	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
167	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
168	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
169	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
170		203
171	# we bless all objects into (empty) derived classes to force a method lookup	204	# we bless all objects into (empty) derived classes to force a method lookup
172	# within the Safe compartment.	205	# within the Safe compartment.
173	for my $pkg (qw(	206	for my $pkg (qw(
174	cf::global cf::attachable	207	cf::global cf::attachable
…		…
182	}	215	}
183		216
184	$Event::DIED = sub {	217	$Event::DIED = sub {
185	warn "error in event callback: @_";	218	warn "error in event callback: @_";
186	};	219	};
		220
		221	#############################################################################
187		222
188	=head2 UTILITY FUNCTIONS	223	=head2 UTILITY FUNCTIONS
189		224
190	=over 4	225	=over 4
191		226
…		…
210	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
211	$d	246	$d
212	} || "[unable to dump $_[0]: '$@']";	247	} || "[unable to dump $_[0]: '$@']";
213	}	248	}
214		249
215	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
216
217	=item $ref = cf::from_json $json	250	=item $ref = cf::from_json $json
218		251
219	Converts a JSON string into the corresponding perl data structure.	252	Converts a JSON string into the corresponding perl data structure.
220		253
221	=item $json = cf::to_json $ref	254	=item $json = cf::to_json $ref
222		255
223	Converts a perl data structure into its JSON representation.	256	Converts a perl data structure into its JSON representation.
		257
		258	=cut
		259
		260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		261
		262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
224		264
225	=item cf::lock_wait $string	265	=item cf::lock_wait $string
226		266
227	Wait until the given lock is available. See cf::lock_acquire.	267	Wait until the given lock is available. See cf::lock_acquire.
228		268
…		…
234	returned.	274	returned.
235		275
236	Lock names should begin with a unique identifier (for example, cf::map::find	276	Lock names should begin with a unique identifier (for example, cf::map::find
237	uses map_find and cf::map::load uses map_load).	277	uses map_find and cf::map::load uses map_load).
238		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
239	=cut	283	=cut
240		284
241	our %LOCK;	285	our %LOCK;
242		286
243	sub lock_wait($) {	287	sub lock_wait($) {
…		…
260		304
261	Coro::guard {	305	Coro::guard {
262	# wake up all waiters, to be on the safe side	306	# wake up all waiters, to be on the safe side
263	$_->ready for @{ delete $LOCK{$key} };	307	$_->ready for @{ delete $LOCK{$key} };
264	}	308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
265	}	315	}
266		316
267	sub freeze_mainloop {	317	sub freeze_mainloop {
268	return unless $TICK_WATCHER->is_active;	318	return unless $TICK_WATCHER->is_active;
269		319
…		…
272	};	322	};
273	$TICK_WATCHER->stop;	323	$TICK_WATCHER->stop;
274	$guard	324	$guard
275	}	325	}
276		326
		327	=item cf::get_slot $time[, $priority]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	Useful for short background jobs.
		334
		335	=cut
		336
		337	our @SLOT_QUEUE;
		338	our $SLOT_QUEUE;
		339
		340	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		341	$SLOT_QUEUE = Coro::async {
		342	my $signal = new Coro::Signal;
		343
		344	while () {
		345	next_job:
		346	my $avail = cf::till_tick;
		347	if ($avail > 0.01) {
		348	for (0 .. $#SLOT_QUEUE) {
		349	if ($SLOT_QUEUE[$_][0] < $avail) {
		350	my $job = splice @SLOT_QUEUE, $_, 1, ();
		351	$job->[2]->send;
		352	Coro::cede;
		353	goto next_job;
		354	}
		355	}
		356	}
		357
		358	if (@SLOT_QUEUE) {
		359	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		360	push @cf::WAIT_FOR_TICK, $signal;
		361	$signal->wait;
		362	} else {
		363	Coro::schedule;
		364	}
		365	}
		366	};
		367
		368	sub get_slot($;$) {
		369	my ($time, $pri) = @_;
		370
		371	push @SLOT_QUEUE, [$time, $pri, my $sig = new Coro::Signal];
		372	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		373	$SLOT_QUEUE->ready;
		374	$sig->wait;
		375	}
		376
277	=item cf::async { BLOCK }	377	=item cf::async { BLOCK }
278		378
279	Currently the same as Coro::async_pool, meaning you cannot use	379	Currently the same as Coro::async_pool, meaning you cannot use
280	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only	380	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
281	thing you are allowed to do is call C<prio> on it.	381	thing you are allowed to do is call C<prio> on it.
…		…
284		384
285	BEGIN { *async = \&Coro::async_pool }	385	BEGIN { *async = \&Coro::async_pool }
286		386
287	=item cf::sync_job { BLOCK }	387	=item cf::sync_job { BLOCK }
288		388
289	The design of crossfire+ requires that the main coro ($Coro::main) is	389	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
290	always able to handle events or runnable, as crossfire+ is only partly	390	is always able to handle events or runnable, as Crossfire TRT is only
291	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	391	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		392	acceptable.
292		393
293	If it must be done, put the blocking parts into C<sync_job>. This will run	394	If it must be done, put the blocking parts into C<sync_job>. This will run
294	the given BLOCK in another coroutine while waiting for the result. The	395	the given BLOCK in another coroutine while waiting for the result. The
295	server will be frozen during this time, so the block should either finish	396	server will be frozen during this time, so the block should either finish
296	fast or be very important.	397	fast or be very important.
…		…
299		400
300	sub sync_job(&) {	401	sub sync_job(&) {
301	my ($job) = @_;	402	my ($job) = @_;
302		403
303	if ($Coro::current == $Coro::main) {	404	if ($Coro::current == $Coro::main) {
		405	my $time = Event::time;
		406
304	# this is the main coro, too bad, we have to block	407	# this is the main coro, too bad, we have to block
305	# till the operation succeeds, freezing the server :/	408	# till the operation succeeds, freezing the server :/
306		409
307	# TODO: use suspend/resume instead	410	# TODO: use suspend/resume instead
308	# (but this is cancel-safe)	411	# (but this is cancel-safe)
…		…
319		422
320	while ($busy) {	423	while ($busy) {
321	Coro::cede or Event::one_event;	424	Coro::cede or Event::one_event;
322	}	425	}
323		426
		427	$time = Event::time - $time;
		428
		429	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		430	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		431
		432	$tick_start += $time; # do not account sync jobs to server load
		433
324	wantarray ? @res : $res[0]	434	wantarray ? @res : $res[0]
325	} else {	435	} else {
326	# we are in another coroutine, how wonderful, everything just works	436	# we are in another coroutine, how wonderful, everything just works
327		437
328	$job->()	438	$job->()
…		…
347	$EXT_CORO{$coro+0} = $coro;	457	$EXT_CORO{$coro+0} = $coro;
348		458
349	$coro	459	$coro
350	}	460	}
351		461
352	sub write_runtime {	462	=item fork_call { }, $args
353	my $guard = cf::lock_acquire "write_runtime";
354		463
355	my $runtime = cf::localdir . "/runtime";	464	Executes the given code block with the given arguments in a seperate
		465	process, returning the results. Everything must be serialisable with
		466	Coro::Storable. May, of course, block. Note that the executed sub may
		467	never block itself or use any form of Event handling.
356		468
357	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	469	=cut
358	or return;
359		470
360	my $value = $cf::RUNTIME + 90 + 10;	471	sub _store_scalar {
361	# 10 is the runtime save interval, for a monotonic clock	472	open my $fh, ">", \my $buf
362	# 60 allows for the watchdog to kill the server.	473	or die "fork_call: cannot open fh-to-buf in child : $!";
363		474	Storable::store_fd $_[0], $fh;
364	(aio_write $fh, 0, (length $value), $value, 0) <= 0
365	and return;
366
367	# always fsync - this file is important
368	aio_fsync $fh
369	and return;
370
371	close $fh	475	close $fh;
372	or return;
373		476
374	aio_rename "$runtime~", $runtime	477	$buf
375	and return;	478	}
376		479
		480	sub fork_call(&@) {
		481	my ($cb, @args) = @_;
		482
		483	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		484	# or die "socketpair: $!";
		485	pipe my $fh1, my $fh2
		486	or die "pipe: $!";
		487
		488	if (my $pid = fork) {
		489	close $fh2;
		490
		491	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		492	warn "pst<$res>" unless $res =~ /^pst/;
		493	$res = Coro::Storable::thaw $res;
		494
		495	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		496
		497	Carp::confess $$res unless "ARRAY" eq ref $res;
		498
		499	return wantarray ? @$res : $res->[-1];
		500	} else {
		501	reset_signals;
		502	local $SIG{__WARN__};
		503	local $SIG{__DIE__};
		504	# just in case, this hack effectively disables event
		505	# in the child. cleaner and slower would be canceling all watchers,
		506	# but this works for the time being.
		507	local $Coro::idle;
		508	$Coro::current->prio (Coro::PRIO_MAX);
		509
		510	eval {
		511	close $fh1;
		512
		513	my @res = eval { $cb->(@args) };
		514
		515	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		516	close $fh2;
		517	};
		518
		519	warn $@ if $@;
		520	_exit 0;
377	1	521	}
		522	}
		523
		524	=item $value = cf::db_get $family => $key
		525
		526	Returns a single value from the environment database.
		527
		528	=item cf::db_put $family => $key => $value
		529
		530	Stores the given C<$value> in the family. It can currently store binary
		531	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		532
		533	=cut
		534
		535	our $DB;
		536
		537	sub db_init {
		538	unless ($DB) {
		539	$DB = BDB::db_create $DB_ENV;
		540
		541	cf::sync_job {
		542	eval {
		543	$DB->set_flags (BDB::CHKSUM);
		544
		545	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		546	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		547	cf::cleanup "db_open(db): $!" if $!;
		548	};
		549	cf::cleanup "db_open(db): $@" if $@;
		550	};
		551	}
		552	}
		553
		554	sub db_get($$) {
		555	my $key = "$_[0]/$_[1]";
		556
		557	cf::sync_job {
		558	BDB::db_get $DB, undef, $key, my $data;
		559
		560	$! ? ()
		561	: $data
		562	}
		563	}
		564
		565	sub db_put($$$) {
		566	BDB::dbreq_pri 4;
		567	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		568	}
		569
		570	=item cf::cache $id => [$paths...], $processversion => $process
		571
		572	Generic caching function that returns the value of the resource $id,
		573	caching and regenerating as required.
		574
		575	This function can block.
		576
		577	=cut
		578
		579	sub cache {
		580	my ($id, $src, $processversion, $process) = @_;
		581
		582	my $meta =
		583	join "\x00",
		584	$processversion,
		585	map {
		586	aio_stat $_
		587	and Carp::croak "$_: $!";
		588
		589	($_, (stat _)[7,9])
		590	} @$src;
		591
		592	my $dbmeta = db_get cache => "$id/meta";
		593	if ($dbmeta ne $meta) {
		594	# changed, we may need to process
		595
		596	my @data;
		597	my $md5;
		598
		599	for (0 .. $#$src) {
		600	0 <= aio_load $src->[$_], $data[$_]
		601	or Carp::croak "$src->[$_]: $!";
		602	}
		603
		604	# if processing is expensive, check
		605	# checksum first
		606	if (1) {
		607	$md5 =
		608	join "\x00",
		609	$processversion,
		610	map {
		611	Coro::cede;
		612	($src->[$_], Digest::MD5::md5_hex $data[$_])
		613	} 0.. $#$src;
		614
		615
		616	my $dbmd5 = db_get cache => "$id/md5";
		617	if ($dbmd5 eq $md5) {
		618	db_put cache => "$id/meta", $meta;
		619
		620	return db_get cache => "$id/data";
		621	}
		622	}
		623
		624	my $t1 = Time::HiRes::time;
		625	my $data = $process->(\@data);
		626	my $t2 = Time::HiRes::time;
		627
		628	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		629
		630	db_put cache => "$id/data", $data;
		631	db_put cache => "$id/md5" , $md5;
		632	db_put cache => "$id/meta", $meta;
		633
		634	return $data;
		635	}
		636
		637	db_get cache => "$id/data"
378	}	638	}
379		639
380	=item cf::datalog type => key => value, ...	640	=item cf::datalog type => key => value, ...
381		641
382	Log a datalog packet of the given type with the given key-value pairs.	642	Log a datalog packet of the given type with the given key-value pairs.
…		…
400	attach callbacks/event handlers (a collection of which is called an "attachment")	660	attach callbacks/event handlers (a collection of which is called an "attachment")
401	to it. All such attachable objects support the following methods.	661	to it. All such attachable objects support the following methods.
402		662
403	In the following description, CLASS can be any of C<global>, C<object>	663	In the following description, CLASS can be any of C<global>, C<object>
404	C<player>, C<client> or C<map> (i.e. the attachable objects in	664	C<player>, C<client> or C<map> (i.e. the attachable objects in
405	crossfire+).	665	Crossfire TRT).
406		666
407	=over 4	667	=over 4
408		668
409	=item $attachable->attach ($attachment, key => $value...)	669	=item $attachable->attach ($attachment, key => $value...)
410		670
…		…
573	$registry = $CB_TYPE[$object_type] ||= [];	833	$registry = $CB_TYPE[$object_type] ||= [];
574		834
575	} elsif ($type eq "subtype") {	835	} elsif ($type eq "subtype") {
576	defined $object_type or Carp::croak "subtype specified without type";	836	defined $object_type or Carp::croak "subtype specified without type";
577	my $object_subtype = shift @arg;	837	my $object_subtype = shift @arg;
578	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	838	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
579		839
580	} elsif ($type eq "package") {	840	} elsif ($type eq "package") {
581	my $pkg = shift @arg;	841	my $pkg = shift @arg;
582		842
583	while (my ($name, $id) = each %cb_id) {	843	while (my ($name, $id) = each %cb_id) {
…		…
612	_attach $registry, $klass, @attach;	872	_attach $registry, $klass, @attach;
613	}	873	}
614		874
615	$obj->{$name} = \%arg;	875	$obj->{$name} = \%arg;
616	} else {	876	} else {
617	warn "object uses attachment '$name' that is not available, postponing.\n";	877	warn "object uses attachment '$name' which is not available, postponing.\n";
618	}	878	}
619		879
620	$obj->{_attachment}{$name} = undef;	880	$obj->{_attachment}{$name} = undef;
621	}	881	}
622		882
…		…
624	if (ref $_[0]) {	884	if (ref $_[0]) {
625	_object_attach @_;	885	_object_attach @_;
626	} else {	886	} else {
627	_attach shift->_attach_registry, @_;	887	_attach shift->_attach_registry, @_;
628	}	888	}
		889	_recalc_want;
629	};	890	};
630		891
631	# all those should be optimised	892	# all those should be optimised
632	sub cf::attachable::detach {	893	sub cf::attachable::detach {
633	my ($obj, $name) = @_;	894	my ($obj, $name) = @_;
…		…
636	delete $obj->{_attachment}{$name};	897	delete $obj->{_attachment}{$name};
637	reattach ($obj);	898	reattach ($obj);
638	} else {	899	} else {
639	Carp::croak "cannot, currently, detach class attachments";	900	Carp::croak "cannot, currently, detach class attachments";
640	}	901	}
		902	_recalc_want;
641	};	903	};
642		904
643	sub cf::attachable::attached {	905	sub cf::attachable::attached {
644	my ($obj, $name) = @_;	906	my ($obj, $name) = @_;
645		907
…		…
660	";	922	";
661	die if $@;	923	die if $@;
662	}	924	}
663		925
664	our $override;	926	our $override;
665	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	927	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
666		928
667	sub override {	929	sub override {
668	$override = 1;	930	$override = 1;
669	@invoke_results = ();	931	@INVOKE_RESULTS = (@_);
670	}	932	}
671		933
672	sub do_invoke {	934	sub do_invoke {
673	my $event = shift;	935	my $event = shift;
674	my $callbacks = shift;	936	my $callbacks = shift;
675		937
676	@invoke_results = ();	938	@INVOKE_RESULTS = ();
677		939
678	local $override;	940	local $override;
679		941
680	for (@$callbacks) {	942	for (@$callbacks) {
681	eval { &{$_->[1]} };	943	eval { &{$_->[1]} };
…		…
698		960
699	Generate an object-specific event with the given arguments.	961	Generate an object-specific event with the given arguments.
700		962
701	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	963	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
702	removed in future versions), and there is no public API to access override	964	removed in future versions), and there is no public API to access override
703	results (if you must, access C<@cf::invoke_results> directly).	965	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
704		966
705	=back	967	=back
706		968
707	=cut	969	=cut
708		970
709	#############################################################################	971	#############################################################################
710	# object support	972	# object support
		973	#
		974
		975	sub _can_merge {
		976	my ($ob1, $ob2) = @_;
		977
		978	local $Storable::canonical = 1;
		979	my $fob1 = Storable::freeze $ob1;
		980	my $fob2 = Storable::freeze $ob2;
		981
		982	$fob1 eq $fob2
		983	}
711		984
712	sub reattach {	985	sub reattach {
713	# basically do the same as instantiate, without calling instantiate	986	# basically do the same as instantiate, without calling instantiate
714	my ($obj) = @_;	987	my ($obj) = @_;
715		988
…		…
818	or return;	1091	or return;
819	$av = eval { (Storable::thaw $av)->{objs} };	1092	$av = eval { (Storable::thaw $av)->{objs} };
820	}	1093	}
821		1094
822	warn sprintf "loading %s (%d)\n",	1095	warn sprintf "loading %s (%d)\n",
823	$filename, length $data, scalar @{$av || []};#d#	1096	$filename, length $data, scalar @{$av || []};
824	return ($data, $av);	1097	return ($data, $av);
825	}	1098	}
		1099
		1100	=head2 COMMAND CALLBACKS
		1101
		1102	=over 4
		1103
		1104	=cut
826		1105
827	#############################################################################	1106	#############################################################################
828	# command handling &c	1107	# command handling &c
829		1108
830	=item cf::register_command $name => \&callback($ob,$args);	1109	=item cf::register_command $name => \&callback($ob,$args);
…		…
843	push @{ $COMMAND{$name} }, [$caller, $cb];	1122	push @{ $COMMAND{$name} }, [$caller, $cb];
844	}	1123	}
845		1124
846	=item cf::register_extcmd $name => \&callback($pl,$packet);	1125	=item cf::register_extcmd $name => \&callback($pl,$packet);
847		1126
848	Register a callbackf ro execution when the client sends an extcmd packet.	1127	Register a callback for execution when the client sends an (synchronous)
		1128	extcmd packet. Ext commands will be processed in the order they are
		1129	received by the server, like other user commands. The first argument is
		1130	the logged-in player. Ext commands can only be processed after a player
		1131	has logged in successfully.
849		1132
850	If the callback returns something, it is sent back as if reply was being	1133	If the callback returns something, it is sent back as if reply was being
851	called.	1134	called.
852		1135
		1136	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1137
		1138	Register a callback for execution when the client sends an (asynchronous)
		1139	exticmd packet. Exti commands are processed by the server as soon as they
		1140	are received, i.e. out of order w.r.t. other commands. The first argument
		1141	is a client socket. Exti commands can be received anytime, even before
		1142	log-in.
		1143
		1144	If the callback returns something, it is sent back as if reply was being
		1145	called.
		1146
853	=cut	1147	=cut
854		1148
855	sub register_extcmd {	1149	sub register_extcmd {
856	my ($name, $cb) = @_;	1150	my ($name, $cb) = @_;
857		1151
858	$EXTCMD{$name} = $cb;	1152	$EXTCMD{$name} = $cb;
		1153	}
		1154
		1155	sub register_exticmd {
		1156	my ($name, $cb) = @_;
		1157
		1158	$EXTICMD{$name} = $cb;
859	}	1159	}
860		1160
861	cf::player->attach (	1161	cf::player->attach (
862	on_command => sub {	1162	on_command => sub {
863	my ($pl, $name, $params) = @_;	1163	my ($pl, $name, $params) = @_;
…		…
872	cf::override;	1172	cf::override;
873	},	1173	},
874	on_extcmd => sub {	1174	on_extcmd => sub {
875	my ($pl, $buf) = @_;	1175	my ($pl, $buf) = @_;
876		1176
877	my $msg = eval { from_json $buf };	1177	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
878		1178
879	if (ref $msg) {	1179	if (ref $msg) {
880	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1180	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
881	if (my %reply = $cb->($pl, $msg)) {	1181	if (my %reply = $cb->($pl, $msg)) {
882	$pl->ext_reply ($msg->{msgid}, %reply);	1182	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
888		1188
889	cf::override;	1189	cf::override;
890	},	1190	},
891	);	1191	);
892		1192
893	sub load_extension {
894	my ($path) = @_;
895
896	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
897	my $base = $1;
898	my $pkg = $1;
899	$pkg =~ s/[^[:word:]]/_/g;
900	$pkg = "ext::$pkg";
901
902	warn "... loading '$path' into '$pkg'\n";
903
904	open my $fh, "<:utf8", $path
905	or die "$path: $!";
906
907	my $source =
908	"package $pkg; use strict; use utf8;\n"
909	. "#line 1 \"$path\"\n{\n"
910	. (do { local $/; <$fh> })
911	. "\n};\n1";
912
913	unless (eval $source) {
914	my $msg = $@ ? "$path: $@\n"
915	: "extension disabled.\n";
916	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
917	warn $@;
918	warn "mandatory extension failed to load, exiting.\n";
919	exit 1;
920	}
921	die $@;
922	}
923
924	push @EXTS, $pkg;
925	}
926
927	sub load_extensions {	1193	sub load_extensions {
		1194	cf::sync_job {
		1195	my %todo;
		1196
928	for my $ext (<$LIBDIR/*.ext>) {	1197	for my $path (<$LIBDIR/*.ext>) {
929	next unless -r $ext;	1198	next unless -r $path;
930	eval {	1199
931	load_extension $ext;	1200	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1201	my $base = $1;
		1202	my $pkg = $1;
		1203	$pkg =~ s/[^[:word:]]/_/g;
		1204	$pkg = "ext::$pkg";
		1205
		1206	open my $fh, "<:utf8", $path
		1207	or die "$path: $!";
		1208
		1209	my $source = do { local $/; <$fh> };
		1210
		1211	my %ext = (
		1212	path => $path,
		1213	base => $base,
		1214	pkg => $pkg,
		1215	);
		1216
		1217	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1218	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1219
		1220	$ext{source} =
		1221	"package $pkg; use strict; use utf8;\n"
		1222	. "#line 1 \"$path\"\n{\n"
		1223	. $source
		1224	. "\n};\n1";
		1225
		1226	$todo{$base} = \%ext;
		1227	}
		1228
		1229	my %done;
		1230	while (%todo) {
		1231	my $progress;
		1232
		1233	while (my ($k, $v) = each %todo) {
		1234	for (split /,\s*/, $v->{meta}{depends}) {
		1235	goto skip
		1236	unless exists $done{$_};
		1237	}
		1238
		1239	warn "... loading '$k' into '$v->{pkg}'\n";
		1240
		1241	unless (eval $v->{source}) {
		1242	my $msg = $@ ? "$v->{path}: $@\n"
		1243	: "$v->{base}: extension inactive.\n";
		1244
		1245	if (exists $v->{meta}{mandatory}) {
		1246	warn $msg;
		1247	warn "mandatory extension failed to load, exiting.\n";
		1248	exit 1;
		1249	}
		1250
		1251	warn $msg;
		1252	}
		1253
		1254	$done{$k} = delete $todo{$k};
		1255	push @EXTS, $v->{pkg};
		1256	$progress = 1;
932	1	1257	}
933	} or warn "$ext not loaded: $@";	1258
		1259	skip:
		1260	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1261	unless $progress;
		1262	}
934	}	1263	};
935	}	1264	}
936		1265
937	#############################################################################	1266	#############################################################################
938		1267
		1268	=back
		1269
939	=head2 CORE EXTENSIONS	1270	=head2 CORE EXTENSIONS
940		1271
941	Functions and methods that extend core crossfire objects.	1272	Functions and methods that extend core crossfire objects.
942		1273
943	=cut	1274	=cut
…		…
955	Returns the given player object, loading it if necessary (might block).	1286	Returns the given player object, loading it if necessary (might block).
956		1287
957	=cut	1288	=cut
958		1289
959	sub playerdir($) {	1290	sub playerdir($) {
960	cf::localdir	1291	"$PLAYERDIR/"
961	. "/"
962	. cf::playerdir
963	. "/"
964	. (ref $_[0] ? $_[0]->ob->name : $_[0])	1292	. (ref $_[0] ? $_[0]->ob->name : $_[0])
965	}	1293	}
966		1294
967	sub path($) {	1295	sub path($) {
968	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];	1296	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
…		…
1088	while and may block, so not sync_job-capable, ever.	1416	while and may block, so not sync_job-capable, ever.
1089		1417
1090	=cut	1418	=cut
1091		1419
1092	sub list_logins {	1420	sub list_logins {
1093	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir	1421	my $dirs = aio_readdir $PLAYERDIR
1094	or return [];	1422	or return [];
1095		1423
1096	my @logins;	1424	my @logins;
1097		1425
1098	for my $login (@$dirs) {	1426	for my $login (@$dirs) {
…		…
1133	}	1461	}
1134		1462
1135	\@paths	1463	\@paths
1136	}	1464	}
1137		1465
		1466	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1467
		1468	Expand crossfire pod fragments into protocol xml.
		1469
		1470	=cut
		1471
		1472	sub expand_cfpod {
		1473	((my $self), (local $_)) = @_;
		1474
		1475	# escape & and <
		1476	s/&/&amp;/g;
		1477	s/(?<![BIUGH])</&lt;/g;
		1478
		1479	# this is buggy, it needs to properly take care of nested <'s
		1480
		1481	1 while
		1482	# replace B<>, I<>, U<> etc.
		1483	s/B<([^\>]*)>/<b>$1<\/b>/
		1484	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1485	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1486	# replace G<male|female> tags
		1487	|| s{G<([^>|]*)\|([^>]*)>}{
		1488	$self->gender ? $2 : $1
		1489	}ge
		1490	# replace H<hint text>
		1491	|| s{H<([^\>]*)>}
		1492	{
		1493	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1494	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1495	"")
		1496	[$self->{hintmode}]
		1497	}ge;
		1498
		1499	# create single paragraphs (very hackish)
		1500	s/(?<=\S)\n(?=\w)/ /g;
		1501
		1502	# compress some whitespace
		1503	s/\s+\n/\n/g; # ws line-ends
		1504	s/\n\n+/\n/g; # double lines
		1505	s/^\n+//; # beginning lines
		1506	s/\n+$//; # ending lines
		1507
		1508	$_
		1509	}
		1510
		1511	sub hintmode {
		1512	$_[0]{hintmode} = $_[1] if @_ > 1;
		1513	$_[0]{hintmode}
		1514	}
		1515
1138	=item $player->ext_reply ($msgid, %msg)	1516	=item $player->ext_reply ($msgid, %msg)
1139		1517
1140	Sends an ext reply to the player.	1518	Sends an ext reply to the player.
1141		1519
1142	=cut	1520	=cut
1143		1521
1144	sub ext_reply($$%) {	1522	sub ext_reply($$%) {
1145	my ($self, $id, %msg) = @_;	1523	my ($self, $id, %msg) = @_;
1146		1524
1147	$msg{msgid} = $id;	1525	$msg{msgid} = $id;
1148		1526	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1149	$self->send ("ext " . cf::to_json \%msg);
1150	}	1527	}
1151		1528
1152	=item $player->ext_event ($type, %msg)	1529	=item $player->ext_event ($type, %msg)
1153		1530
1154	Sends an ext event to the client.	1531	Sends an ext event to the client.
…		…
1169		1546
1170	package cf::region;	1547	package cf::region;
1171		1548
1172	=item cf::region::find_by_path $path	1549	=item cf::region::find_by_path $path
1173		1550
1174	Tries to decuce the probable region for a map knowing only its path.	1551	Tries to decuce the likely region for a map knowing only its path.
1175		1552
1176	=cut	1553	=cut
1177		1554
1178	sub find_by_path($) {	1555	sub find_by_path($) {
1179	my ($path) = @_;	1556	my ($path) = @_;
1180		1557
1181	my ($match, $specificity);	1558	my ($match, $specificity);
1182		1559
1183	for my $region (list) {	1560	for my $region (list) {
1184	if ($region->match && $path =~ $region->match) {	1561	if ($region->{match} && $path =~ $region->{match}) {
1185	($match, $specificity) = ($region, $region->specificity)	1562	($match, $specificity) = ($region, $region->specificity)
1186	if $region->specificity > $specificity;	1563	if $region->specificity > $specificity;
1187	}	1564	}
1188	}	1565	}
1189		1566
…		…
1253	my ($self, $merge) = @_;	1630	my ($self, $merge) = @_;
1254		1631
1255	# we have to keep some variables in memory intact	1632	# we have to keep some variables in memory intact
1256	local $self->{path};	1633	local $self->{path};
1257	local $self->{load_path};	1634	local $self->{load_path};
1258	local $self->{deny_save};
1259	local $self->{deny_reset};
1260		1635
1261	$self->SUPER::thawer_merge ($merge);	1636	$self->SUPER::thawer_merge ($merge);
1262	}	1637	}
1263		1638
1264	sub normalise {	1639	sub normalise {
…		…
1311	$self->init; # pass $1 etc.	1686	$self->init; # pass $1 etc.
1312	return $self;	1687	return $self;
1313	}	1688	}
1314	}	1689	}
1315		1690
1316	Carp::carp "unable to resolve path '$path' (base '$base').";	1691	Carp::cluck "unable to resolve path '$path' (base '$base').";
1317	()	1692	()
1318	}	1693	}
1319		1694
1320	sub init {	1695	sub init {
1321	my ($self) = @_;	1696	my ($self) = @_;
…		…
1336		1711
1337	# the original (read-only) location	1712	# the original (read-only) location
1338	sub load_path {	1713	sub load_path {
1339	my ($self) = @_;	1714	my ($self) = @_;
1340		1715
1341	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}	1716	"$MAPDIR/$self->{path}.map"
1342	}	1717	}
1343		1718
1344	# the temporary/swap location	1719	# the temporary/swap location
1345	sub save_path {	1720	sub save_path {
1346	my ($self) = @_;	1721	my ($self) = @_;
1347		1722
1348	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1723	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1349	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path	1724	"$TMPDIR/$path.map"
1350	}	1725	}
1351		1726
1352	# the unique path, undef == no special unique path	1727	# the unique path, undef == no special unique path
1353	sub uniq_path {	1728	sub uniq_path {
1354	my ($self) = @_;	1729	my ($self) = @_;
1355		1730
1356	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1731	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1357	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path	1732	"$UNIQUEDIR/$path"
1358	}	1733	}
1359		1734
1360	# and all this just because we cannot iterate over	1735	# and all this just because we cannot iterate over
1361	# all maps in C++...	1736	# all maps in C++...
1362	sub change_all_map_light {	1737	sub change_all_map_light {
1363	my ($change) = @_;	1738	my ($change) = @_;
1364		1739
1365	$_->change_map_light ($change)	1740	$_->change_map_light ($change)
1366	for grep $_->outdoor, values %cf::MAP;	1741	for grep $_->outdoor, values %cf::MAP;
		1742	}
		1743
		1744	sub decay_objects {
		1745	my ($self) = @_;
		1746
		1747	return if $self->{deny_reset};
		1748
		1749	$self->do_decay_objects;
1367	}	1750	}
1368		1751
1369	sub unlink_save {	1752	sub unlink_save {
1370	my ($self) = @_;	1753	my ($self) = @_;
1371		1754
…		…
1429	$self->load_header_orig	1812	$self->load_header_orig
1430	or return;	1813	or return;
1431	$self->prepare_orig;	1814	$self->prepare_orig;
1432	}	1815	}
1433		1816
		1817	$self->{deny_reset} = 1
		1818	if $self->no_reset;
		1819
1434	$self->default_region (cf::region::find_by_path $self->{path})	1820	$self->default_region (cf::region::find_by_path $self->{path})
1435	unless $self->default_region;	1821	unless $self->default_region;
1436		1822
1437	1	1823	1
1438	}	1824	}
…		…
1453	$map->{last_save} = $cf::RUNTIME;	1839	$map->{last_save} = $cf::RUNTIME;
1454		1840
1455	$map->load_header	1841	$map->load_header
1456	or return;	1842	or return;
1457		1843
1458	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1844	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1459	# doing this can freeze the server in a sync job, obviously	1845	# doing this can freeze the server in a sync job, obviously
1460	#$cf::WAIT_FOR_TICK->wait;	1846	#$cf::WAIT_FOR_TICK->wait;
1461	$map->reset;	1847	$map->reset;
1462	undef $guard;	1848	undef $guard;
1463	return find $path;	1849	return find $path;
…		…
1474	my ($self) = @_;	1860	my ($self) = @_;
1475		1861
1476	local $self->{deny_reset} = 1; # loading can take a long time	1862	local $self->{deny_reset} = 1; # loading can take a long time
1477		1863
1478	my $path = $self->{path};	1864	my $path = $self->{path};
		1865
		1866	{
1479	my $guard = cf::lock_acquire "map_load:$path";	1867	my $guard = cf::lock_acquire "map_load:$path";
1480		1868
1481	return if $self->in_memory != cf::MAP_SWAPPED;	1869	return if $self->in_memory != cf::MAP_SWAPPED;
1482		1870
1483	$self->in_memory (cf::MAP_LOADING);	1871	$self->in_memory (cf::MAP_LOADING);
1484		1872
1485	$self->alloc;	1873	$self->alloc;
1486		1874
1487	$self->pre_load;	1875	$self->pre_load;
1488	Coro::cede;
1489
1490	$self->_load_objects ($self->{load_path}, 1)
1491	or return;
1492
1493	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1494	if delete $self->{load_original};
1495
1496	if (my $uniq = $self->uniq_path) {
1497	utf8::encode $uniq;
1498	if (aio_open $uniq, O_RDONLY, 0) {
1499	$self->clear_unique_items;
1500	$self->_load_objects ($uniq, 0);
1501	}
1502	}
1503
1504	Coro::cede;
1505	# now do the right thing for maps
1506	$self->link_multipart_objects;
1507	Coro::cede;
1508
1509	unless ($self->{deny_activate}) {
1510	$self->decay_objects;
1511	$self->fix_auto_apply;
1512	$self->update_buttons;
1513	Coro::cede;	1876	Coro::cede;
1514	$self->set_darkness_map;	1877
		1878	$self->_load_objects ($self->{load_path}, 1)
		1879	or return;
		1880
		1881	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1882	if delete $self->{load_original};
		1883
		1884	if (my $uniq = $self->uniq_path) {
		1885	utf8::encode $uniq;
		1886	if (aio_open $uniq, O_RDONLY, 0) {
		1887	$self->clear_unique_items;
		1888	$self->_load_objects ($uniq, 0);
		1889	}
		1890	}
		1891
		1892	Coro::cede;
		1893	# now do the right thing for maps
		1894	$self->link_multipart_objects;
1515	$self->difficulty ($self->estimate_difficulty)	1895	$self->difficulty ($self->estimate_difficulty)
1516	unless $self->difficulty;	1896	unless $self->difficulty;
1517	Coro::cede;	1897	Coro::cede;
		1898
		1899	unless ($self->{deny_activate}) {
		1900	$self->decay_objects;
		1901	$self->fix_auto_apply;
		1902	$self->update_buttons;
		1903	Coro::cede;
		1904	$self->set_darkness_map;
		1905	Coro::cede;
1518	$self->activate;	1906	$self->activate;
1519	Coro::cede;	1907	}
		1908
		1909	$self->in_memory (cf::MAP_IN_MEMORY);
1520	}	1910	}
1521		1911
1522	$self->post_load;	1912	$self->post_load;
1523	Coro::cede;
1524
1525	$self->in_memory (cf::MAP_IN_MEMORY);
1526	}	1913	}
1527		1914
1528	sub customise_for {	1915	sub customise_for {
1529	my ($self, $ob) = @_;	1916	my ($self, $ob) = @_;
1530		1917
1531	return find "~" . $ob->name . "/" . $self->{path}	1918	return find "~" . $ob->name . "/" . $self->{path}
1532	if $self->per_player;	1919	if $self->per_player;
		1920
		1921	# return find "?party/" . $ob->name . "/" . $self->{path}
		1922	# if $self->per_party;
1533		1923
1534	$self	1924	$self
1535	}	1925	}
1536		1926
1537	# find and load all maps in the 3x3 area around a map	1927	# find and load all maps in the 3x3 area around a map
…		…
1584		1974
1585	undef $MAP_PREFETCH{$path};	1975	undef $MAP_PREFETCH{$path};
1586	$MAP_PREFETCHER ||= cf::async {	1976	$MAP_PREFETCHER ||= cf::async {
1587	while (%MAP_PREFETCH) {	1977	while (%MAP_PREFETCH) {
1588	for my $path (keys %MAP_PREFETCH) {	1978	for my $path (keys %MAP_PREFETCH) {
1589	my $map = find $path	1979	if (my $map = find $path) {
1590	or next;
1591	$map->load;	1980	$map->load;
		1981	}
1592		1982
1593	delete $MAP_PREFETCH{$path};	1983	delete $MAP_PREFETCH{$path};
1594	}	1984	}
1595	}	1985	}
1596	undef $MAP_PREFETCHER;	1986	undef $MAP_PREFETCHER;
…		…
1648		2038
1649	sub reset_at {	2039	sub reset_at {
1650	my ($self) = @_;	2040	my ($self) = @_;
1651		2041
1652	# TODO: safety, remove and allow resettable per-player maps	2042	# TODO: safety, remove and allow resettable per-player maps
1653	return 1e99 if $self->isa ("ext::map_per_player");#d#
1654	return 1e99 if $self->{deny_reset};	2043	return 1e99 if $self->{deny_reset};
1655		2044
1656	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	2045	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1657	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	2046	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1658		2047
…		…
1669	my ($self) = @_;	2058	my ($self) = @_;
1670		2059
1671	my $lock = cf::lock_acquire "map_data:$self->{path}";	2060	my $lock = cf::lock_acquire "map_data:$self->{path}";
1672		2061
1673	return if $self->players;	2062	return if $self->players;
1674	return if $self->isa ("ext::map_per_player");#d#
1675		2063
1676	warn "resetting map ", $self->path;#d#	2064	warn "resetting map ", $self->path;
1677		2065
1678	$self->in_memory (cf::MAP_SWAPPED);	2066	$self->in_memory (cf::MAP_SWAPPED);
1679		2067
1680	# need to save uniques path	2068	# need to save uniques path
1681	unless ($self->{deny_save}) {	2069	unless ($self->{deny_save}) {
…		…
1713	$cf::MAP{$self->path} = $self;	2101	$cf::MAP{$self->path} = $self;
1714		2102
1715	$self->reset; # polite request, might not happen	2103	$self->reset; # polite request, might not happen
1716	}	2104	}
1717		2105
		2106	=item $maps = cf::map::tmp_maps
		2107
		2108	Returns an arrayref with all map paths of currently instantiated and saved
		2109	maps. May block.
		2110
		2111	=cut
		2112
		2113	sub tmp_maps() {
		2114	[
		2115	map {
		2116	utf8::decode $_;
		2117	/\.map$/
		2118	? normalise $_
		2119	: ()
		2120	} @{ aio_readdir $TMPDIR or [] }
		2121	]
		2122	}
		2123
		2124	=item $maps = cf::map::random_maps
		2125
		2126	Returns an arrayref with all map paths of currently instantiated and saved
		2127	random maps. May block.
		2128
		2129	=cut
		2130
		2131	sub random_maps() {
		2132	[
		2133	map {
		2134	utf8::decode $_;
		2135	/\.map$/
		2136	? normalise "?random/$_"
		2137	: ()
		2138	} @{ aio_readdir $RANDOMDIR or [] }
		2139	]
		2140	}
		2141
1718	=item cf::map::unique_maps	2142	=item cf::map::unique_maps
1719		2143
1720	Returns an arrayref of paths of all shared maps that have	2144	Returns an arrayref of paths of all shared maps that have
1721	instantiated unique items. May block.	2145	instantiated unique items. May block.
1722		2146
1723	=cut	2147	=cut
1724		2148
1725	sub unique_maps() {	2149	sub unique_maps() {
1726	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir	2150	[
1727	or return;	2151	map {
1728
1729	my @paths;
1730
1731	for (@$files) {
1732	utf8::decode $_;	2152	utf8::decode $_;
1733	next if /\.pst$/;	2153	/\.map$/
1734	next unless /^$PATH_SEP/o;	2154	? normalise $_
1735		2155	: ()
1736	push @paths, cf::map::normalise $_;	2156	} @{ aio_readdir $UNIQUEDIR or [] }
1737	}	2157	]
1738
1739	\@paths
1740	}	2158	}
1741		2159
1742	package cf;	2160	package cf;
1743		2161
1744	=back	2162	=back
…		…
1790		2208
1791	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2209	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1792		2210
1793	if ($self->{record_replies}) {	2211	if ($self->{record_replies}) {
1794	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2212	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2213
1795	} else {	2214	} else {
		2215	my $pl = $self->contr;
		2216
		2217	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2218	my $diag = $pl->{npc_dialog};
		2219	$diag->{pl}->ext_reply (
		2220	$diag->{id},
		2221	msgtype => "reply",
		2222	msg => $diag->{pl}->expand_cfpod ($msg),
		2223	add_topics => []
		2224	);
		2225
		2226	} else {
1796	$msg = $npc->name . " says: $msg" if $npc;	2227	$msg = $npc->name . " says: $msg" if $npc;
1797	$self->message ($msg, $flags);	2228	$self->message ($msg, $flags);
		2229	}
1798	}	2230	}
1799	}	2231	}
1800		2232
1801	=item $player_object->may ("access")	2233	=item $player_object->may ("access")
1802		2234
…		…
1850	$self->deactivate_recursive;	2282	$self->deactivate_recursive;
1851		2283
1852	return if UNIVERSAL::isa $self->map, "ext::map_link";	2284	return if UNIVERSAL::isa $self->map, "ext::map_link";
1853		2285
1854	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2286	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1855	if $self->map;	2287	if $self->map && $self->map->{path} ne "{link}";
1856		2288
1857	$self->enter_map ($LINK_MAP || link_map, 10, 10);	2289	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1858	}	2290	}
1859		2291
1860	sub cf::object::player::leave_link {	2292	sub cf::object::player::leave_link {
1861	my ($self, $map, $x, $y) = @_;	2293	my ($self, $map, $x, $y) = @_;
		2294
		2295	return unless $self->contr->active;
1862		2296
1863	my $link_pos = delete $self->{_link_pos};	2297	my $link_pos = delete $self->{_link_pos};
1864		2298
1865	unless ($map) {	2299	unless ($map) {
1866	# restore original map position	2300	# restore original map position
…		…
1889		2323
1890	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2324	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1891	$self->enter_map ($map, $x, $y);	2325	$self->enter_map ($map, $x, $y);
1892	}	2326	}
1893		2327
1894	cf::player->attach (	2328	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1895	on_logout => sub {
1896	my ($pl) = @_;
1897		2329
1898	# abort map switching before logout	2330	Moves the player to the given map-path and coordinates by first freezing
1899	if ($pl->ob->{_link_pos}) {	2331	her, loading and preparing them map, calling the provided $check callback
1900	cf::sync_job {	2332	that has to return the map if sucecssful, and then unfreezes the player on
1901	$pl->ob->leave_link	2333	the new (success) or old (failed) map position. In either case, $done will
1902	};	2334	be called at the end of this process.
1903	}
1904	},
1905	on_login => sub {
1906	my ($pl) = @_;
1907		2335
1908	# try to abort aborted map switching on player login :)
1909	# should happen only on crashes
1910	if ($pl->ob->{_link_pos}) {
1911	$pl->ob->enter_link;
1912	(async {
1913	$pl->ob->reply (undef,
1914	"There was an internal problem at your last logout, "
1915	. "the server will try to bring you to your intended destination in a second.",
1916	cf::NDI_RED);
1917	# we need this sleep as the login has a concurrent enter_exit running
1918	# and this sleep increases chances of the player not ending up in scorn
1919	Coro::Timer::sleep 1;
1920	$pl->ob->leave_link;
1921	})->prio (2);
1922	}
1923	},
1924	);
1925
1926	=item $player_object->goto ($path, $x, $y)
1927
1928	=cut	2336	=cut
		2337
		2338	our $GOTOGEN;
1929		2339
1930	sub cf::object::player::goto {	2340	sub cf::object::player::goto {
1931	my ($self, $path, $x, $y) = @_;	2341	my ($self, $path, $x, $y, $check, $done) = @_;
		2342
		2343	# do generation counting so two concurrent goto's will be executed in-order
		2344	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1932		2345
1933	$self->enter_link;	2346	$self->enter_link;
1934		2347
1935	(async {	2348	(async {
1936	my $map = eval {	2349	my $map = eval {
1937	my $map = cf::map::find $path;	2350	my $map = cf::map::find $path;
		2351
		2352	if ($map) {
1938	$map = $map->customise_for ($self) if $map;	2353	$map = $map->customise_for ($self);
		2354	$map = $check->($map) if $check && $map;
		2355	} else {
		2356	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2357	}
		2358
1939	$map	2359	$map
		2360	};
		2361
		2362	if ($@) {
		2363	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2364	LOG llevError | logBacktrace, Carp::longmess $@;
1940	} or	2365	}
1941	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1942		2366
		2367	if ($gen == $self->{_goto_generation}) {
		2368	delete $self->{_goto_generation};
1943	$self->leave_link ($map, $x, $y);	2369	$self->leave_link ($map, $x, $y);
		2370	}
		2371
		2372	$done->() if $done;
1944	})->prio (1);	2373	})->prio (1);
1945	}	2374	}
1946		2375
1947	=item $player_object->enter_exit ($exit_object)	2376	=item $player_object->enter_exit ($exit_object)
1948		2377
…		…
1987		2416
1988	$rmp->{random_seed} ||= $exit->random_seed;	2417	$rmp->{random_seed} ||= $exit->random_seed;
1989		2418
1990	my $data = cf::to_json $rmp;	2419	my $data = cf::to_json $rmp;
1991	my $md5 = Digest::MD5::md5_hex $data;	2420	my $md5 = Digest::MD5::md5_hex $data;
1992	my $meta = "$cf::RANDOM_MAPS/$md5.meta";	2421	my $meta = "$RANDOMDIR/$md5.meta";
1993		2422
1994	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {	2423	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1995	aio_write $fh, 0, (length $data), $data, 0;	2424	aio_write $fh, 0, (length $data), $data, 0;
1996	undef $fh;	2425	undef $fh;
1997	aio_rename "$meta~", $meta;	2426	aio_rename "$meta~", $meta;
…		…
2016	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;	2445	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
2017	my $hp = $exit->stats->hp;	2446	my $hp = $exit->stats->hp;
2018	my $sp = $exit->stats->sp;	2447	my $sp = $exit->stats->sp;
2019		2448
2020	$self->enter_link;	2449	$self->enter_link;
		2450
		2451	# if exit is damned, update players death & WoR home-position
		2452	$self->contr->savebed ($slaying, $hp, $sp)
		2453	if $exit->flag (FLAG_DAMNED);
2021		2454
2022	(async {	2455	(async {
2023	$self->deactivate_recursive; # just to be sure	2456	$self->deactivate_recursive; # just to be sure
2024	unless (eval {	2457	unless (eval {
2025	$self->goto ($slaying, $hp, $sp);	2458	$self->goto ($slaying, $hp, $sp);
…		…
2053		2486
2054	utf8::encode $text;	2487	utf8::encode $text;
2055	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2488	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2056	}	2489	}
2057		2490
		2491	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2492
		2493	Send a drawinfo or msg packet to the client, formatting the msg for the
		2494	client if neccessary. C<$type> should be a string identifying the type of
		2495	the message, with C<log> being the default. If C<$color> is negative, suppress
		2496	the message unless the client supports the msg packet.
		2497
		2498	=cut
		2499
		2500	sub cf::client::send_msg {
		2501	my ($self, $channel, $msg, $color, @extra) = @_;
		2502
		2503	$msg = $self->pl->expand_cfpod ($msg);
		2504
		2505	$color &= ~cf::NDI_UNIQUE; # just in case...
		2506
		2507	if (ref $channel) {
		2508	# send meta info to client, if not yet sent
		2509	unless (exists $self->{channel}{$channel->{id}}) {
		2510	$self->{channel}{$channel->{id}} = $channel;
		2511	$self->ext_event (channel_info => %$channel);
		2512	}
		2513
		2514	$channel = $channel->{id};
		2515	}
		2516
		2517	return unless @extra || length $msg;
		2518
		2519	if ($self->can_msg) {
		2520	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2521	} else {
		2522	# replace some tags by gcfclient-compatible ones
		2523	for ($msg) {
		2524	1 while
		2525	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2526	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2527	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2528	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2529	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2530	}
		2531
		2532	if ($color >= 0) {
		2533	if (0 && $msg =~ /\[/) {
		2534	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2535	} else {
		2536	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2537	$self->send_packet ("drawinfo $color $msg")
		2538	}
		2539	}
		2540	}
		2541	}
		2542
2058	=item $client->ext_event ($type, %msg)	2543	=item $client->ext_event ($type, %msg)
2059		2544
2060	Sends an exti event to the client.	2545	Sends an ext event to the client.
2061		2546
2062	=cut	2547	=cut
2063		2548
2064	sub cf::client::ext_event($$%) {	2549	sub cf::client::ext_event($$%) {
2065	my ($self, $type, %msg) = @_;	2550	my ($self, $type, %msg) = @_;
2066		2551
		2552	return unless $self->extcmd;
		2553
2067	$msg{msgtype} = "event_$type";	2554	$msg{msgtype} = "event_$type";
2068	$self->send_packet ("ext " . cf::to_json \%msg);	2555	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2069	}	2556	}
2070		2557
2071	=item $success = $client->query ($flags, "text", \&cb)	2558	=item $success = $client->query ($flags, "text", \&cb)
2072		2559
2073	Queues a query to the client, calling the given callback with	2560	Queues a query to the client, calling the given callback with
2074	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2561	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2075	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2562	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2076		2563
2077	Queries can fail, so check the return code. Or don't, as queries will become	2564	Queries can fail, so check the return code. Or don't, as queries will
2078	reliable at some point in the future.	2565	become reliable at some point in the future.
2079		2566
2080	=cut	2567	=cut
2081		2568
2082	sub cf::client::query {	2569	sub cf::client::query {
2083	my ($self, $flags, $text, $cb) = @_;	2570	my ($self, $flags, $text, $cb) = @_;
…		…
2091	utf8::encode $text;	2578	utf8::encode $text;
2092	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2579	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2093		2580
2094	$self->send_packet ($self->{query_queue}[0][0])	2581	$self->send_packet ($self->{query_queue}[0][0])
2095	if @{ $self->{query_queue} } == 1;	2582	if @{ $self->{query_queue} } == 1;
		2583
		2584	1
2096	}	2585	}
2097		2586
2098	cf::client->attach (	2587	cf::client->attach (
		2588	on_connect => sub {
		2589	my ($ns) = @_;
		2590
		2591	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2592	},
2099	on_reply => sub {	2593	on_reply => sub {
2100	my ($ns, $msg) = @_;	2594	my ($ns, $msg) = @_;
2101		2595
2102	# this weird shuffling is so that direct followup queries	2596	# this weird shuffling is so that direct followup queries
2103	# get handled first	2597	# get handled first
…		…
2115	} else {	2609	} else {
2116	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2610	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2117	}	2611	}
2118	}	2612	}
2119	},	2613	},
		2614	on_exticmd => sub {
		2615	my ($ns, $buf) = @_;
		2616
		2617	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2618
		2619	if (ref $msg) {
		2620	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2621	if (my %reply = $cb->($ns, $msg)) {
		2622	$reply{msgid} = $msg->{msgid};
		2623	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2624	}
		2625	}
		2626	} else {
		2627	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2628	}
		2629
		2630	cf::override;
		2631	},
2120	);	2632	);
2121		2633
2122	=item $client->async (\&cb)	2634	=item $client->async (\&cb)
2123		2635
2124	Create a new coroutine, running the specified callback. The coroutine will	2636	Create a new coroutine, running the specified callback. The coroutine will
…		…
2173		2685
2174	=pod	2686	=pod
2175		2687
2176	The following functions and methods are available within a safe environment:	2688	The following functions and methods are available within a safe environment:
2177		2689
2178	cf::object contr pay_amount pay_player map	2690	cf::object
		2691	contr pay_amount pay_player map x y force_find force_add
		2692	insert remove
		2693
2179	cf::object::player player	2694	cf::object::player
2180	cf::player peaceful	2695	player
2181	cf::map trigger	2696
		2697	cf::player
		2698	peaceful
		2699
		2700	cf::map
		2701	trigger
2182		2702
2183	=cut	2703	=cut
2184		2704
2185	for (	2705	for (
2186	["cf::object" => qw(contr pay_amount pay_player map)],	2706	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2707	insert remove)],
2187	["cf::object::player" => qw(player)],	2708	["cf::object::player" => qw(player)],
2188	["cf::player" => qw(peaceful)],	2709	["cf::player" => qw(peaceful)],
2189	["cf::map" => qw(trigger)],	2710	["cf::map" => qw(trigger)],
2190	) {	2711	) {
2191	no strict 'refs';	2712	no strict 'refs';
…		…
2262	=back	2783	=back
2263		2784
2264	=cut	2785	=cut
2265		2786
2266	#############################################################################	2787	#############################################################################
2267
2268	=head2 EXTENSION DATABASE SUPPORT
2269
2270	Crossfire maintains a very simple database for extension use. It can
2271	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2272	convert to/from binary).
2273
2274	The parameter C<$family> should best start with the name of the extension
2275	using it, it should be unique.
2276
2277	=over 4
2278
2279	=item $value = cf::db_get $family => $key
2280
2281	Returns a single value from the database.
2282
2283	=item cf::db_put $family => $key => $value
2284
2285	Stores the given C<$value> in the family.
2286
2287	=cut
2288
2289	our $DB;
2290
2291	sub db_init {
2292	unless ($DB) {
2293	$DB = BDB::db_create $DB_ENV;
2294
2295	cf::sync_job {
2296	eval {
2297	$DB->set_flags (BDB::CHKSUM);
2298
2299	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2300	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2301	cf::cleanup "db_open(db): $!" if $!;
2302	};
2303	cf::cleanup "db_open(db): $@" if $@;
2304	};
2305	}
2306	}
2307
2308	sub db_get($$) {
2309	my $key = "$_[0]/$_[1]";
2310
2311	cf::sync_job {
2312	BDB::db_get $DB, undef, $key, my $data;
2313
2314	$! ? ()
2315	: $data
2316	}
2317	}
2318
2319	sub db_put($$$) {
2320	BDB::dbreq_pri 4;
2321	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2322	}
2323
2324	=item cf::cache $id => [$paths...], $processversion => $process
2325
2326	Generic caching function that returns the value of the resource $id,
2327	caching and regenerating as required.
2328
2329	This function can block.
2330
2331	=cut
2332
2333	sub cache {
2334	my ($id, $src, $processversion, $process) = @_;
2335
2336	my $meta =
2337	join "\x00",
2338	$processversion,
2339	map {
2340	aio_stat $_
2341	and Carp::croak "$_: $!";
2342
2343	($_, (stat _)[7,9])
2344	} @$src;
2345
2346	my $dbmeta = db_get cache => "$id/meta";
2347	if ($dbmeta ne $meta) {
2348	# changed, we may need to process
2349
2350	my @data;
2351	my $md5;
2352
2353	for (0 .. $#$src) {
2354	0 <= aio_load $src->[$_], $data[$_]
2355	or Carp::croak "$src->[$_]: $!";
2356	}
2357
2358	# if processing is expensive, check
2359	# checksum first
2360	if (1) {
2361	$md5 =
2362	join "\x00",
2363	$processversion,
2364	map {
2365	Coro::cede;
2366	($src->[$_], Digest::MD5::md5_hex $data[$_])
2367	} 0.. $#$src;
2368
2369
2370	my $dbmd5 = db_get cache => "$id/md5";
2371	if ($dbmd5 eq $md5) {
2372	db_put cache => "$id/meta", $meta;
2373
2374	return db_get cache => "$id/data";
2375	}
2376	}
2377
2378	my $data = $process->(\@data);
2379
2380	db_put cache => "$id/data", $data;
2381	db_put cache => "$id/md5" , $md5;
2382	db_put cache => "$id/meta", $meta;
2383
2384	return $data;
2385	}
2386
2387	db_get cache => "$id/data"
2388	}
2389
2390	=item fork_call { }, $args
2391
2392	Executes the given code block with the given arguments in a seperate
2393	process, returning the results. Everything must be serialisable with
2394	Coro::Storable. May, of course, block. Note that the executed sub may
2395	never block itself or use any form of Event handling.
2396
2397	=cut
2398
2399	sub fork_call(&@) {
2400	my ($cb, @args) = @_;
2401
2402	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2403	# or die "socketpair: $!";
2404	pipe my $fh1, my $fh2
2405	or die "pipe: $!";
2406
2407	if (my $pid = fork) {
2408	close $fh2;
2409
2410	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2411	$res = Coro::Storable::thaw $res;
2412
2413	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2414
2415	die $$res unless "ARRAY" eq ref $res;
2416
2417	return wantarray ? @$res : $res->[-1];
2418	} else {
2419	local $SIG{__WARN__};
2420	eval {
2421	local $SIG{__DIE__};
2422	close $fh1;
2423
2424	my @res = eval { $cb->(@args) };
2425	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2426	};
2427
2428	warn $@ if $@;
2429	_exit 0;
2430	}
2431	}
2432
2433
2434
2435	#############################################################################
2436	# the server's init and main functions	2788	# the server's init and main functions
2437		2789
2438	sub load_facedata($) {	2790	sub load_facedata($) {
2439	my ($path) = @_;	2791	my ($path) = @_;
2440		2792
…		…
2452	{	2804	{
2453	my $faces = $facedata->{faceinfo};	2805	my $faces = $facedata->{faceinfo};
2454		2806
2455	while (my ($face, $info) = each %$faces) {	2807	while (my ($face, $info) = each %$faces) {
2456	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2808	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2457	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2809	cf::face::set_visibility $idx, $info->{visibility};
		2810	cf::face::set_magicmap $idx, $info->{magicmap};
2458	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2811	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2459	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2812	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2460	Coro::cede;	2813
		2814	cf::cede_to_tick;
2461	}	2815	}
2462		2816
2463	while (my ($face, $info) = each %$faces) {	2817	while (my ($face, $info) = each %$faces) {
2464	next unless $info->{smooth};	2818	next unless $info->{smooth};
2465	my $idx = cf::face::find $face	2819	my $idx = cf::face::find $face
2466	or next;	2820	or next;
2467	if (my $smooth = cf::face::find $info->{smooth}) {	2821	if (my $smooth = cf::face::find $info->{smooth}) {
		2822	cf::face::set_smooth $idx, $smooth;
2468	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2823	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2469	} else {	2824	} else {
2470	warn "smooth face '$info->{smooth}' not found for face '$face'";	2825	warn "smooth face '$info->{smooth}' not found for face '$face'";
2471	}	2826	}
2472	Coro::cede;	2827
		2828	cf::cede_to_tick;
2473	}	2829	}
2474	}	2830	}
2475		2831
2476	{	2832	{
2477	my $anims = $facedata->{animinfo};	2833	my $anims = $facedata->{animinfo};
2478		2834
2479	while (my ($anim, $info) = each %$anims) {	2835	while (my ($anim, $info) = each %$anims) {
2480	cf::anim::set $anim, $info->{frames}, $info->{facings};	2836	cf::anim::set $anim, $info->{frames}, $info->{facings};
2481	Coro::cede;	2837	cf::cede_to_tick;
2482	}	2838	}
2483		2839
2484	cf::anim::invalidate_all; # d'oh	2840	cf::anim::invalidate_all; # d'oh
2485	}	2841	}
2486		2842
		2843	{
		2844	# TODO: for gcfclient pleasure, we should give resources
		2845	# that gcfclient doesn't grok a >10000 face index.
		2846	my $res = $facedata->{resource};
		2847	my $enc = JSON::XS->new->utf8->canonical;
		2848
		2849	while (my ($name, $info) = each %$res) {
		2850	my $meta = $enc->encode ({
		2851	name => $name,
		2852	type => $info->{type},
		2853	copyright => $info->{copyright}, #TODO#
		2854	});
		2855
		2856	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2857
		2858	if ($name =~ /\.jpg$/) {
		2859	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2860	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2861	} else {
		2862	my $data = pack "(w/a*)*", $meta, $info->{data};
		2863	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2864
		2865	cf::face::set_type $idx, 1;
		2866	cf::face::set_data $idx, 0, $data, $chk;
		2867	}
		2868
		2869	cf::cede_to_tick;
		2870	}
		2871	}
		2872
2487	1	2873	1
2488	}	2874	}
2489		2875
		2876	sub reload_regions {
		2877	load_resource_file "$MAPDIR/regions"
		2878	or die "unable to load regions file\n";
		2879
		2880	for (cf::region::list) {
		2881	$_->{match} = qr/$_->{match}/
		2882	if exists $_->{match};
		2883	}
		2884	}
		2885
2490	sub reload_facedata {	2886	sub reload_facedata {
2491	load_facedata sprintf "%s/facedata", cf::datadir	2887	load_facedata "$DATADIR/facedata"
2492	or die "unable to load facedata\n";	2888	or die "unable to load facedata\n";
2493	}	2889	}
2494		2890
2495	sub reload_regions {
2496	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
2497	or die "unable to load regions file\n";
2498	}
2499
2500	sub reload_archetypes {	2891	sub reload_archetypes {
2501	load_resource_file sprintf "%s/archetypes", cf::datadir	2892	load_resource_file "$DATADIR/archetypes"
2502	or die "unable to load archetypes\n";	2893	or die "unable to load archetypes\n";
		2894	#d# NEED to laod twice to resolve forward references
		2895	# this really needs to be done in an extra post-pass
		2896	# (which needs to be synchronous, so solve it differently)
		2897	load_resource_file "$DATADIR/archetypes"
		2898	or die "unable to load archetypes\n";
2503	}	2899	}
2504		2900
2505	sub reload_treasures {	2901	sub reload_treasures {
2506	load_resource_file sprintf "%s/treasures", cf::datadir	2902	load_resource_file "$DATADIR/treasures"
2507	or die "unable to load treasurelists\n";	2903	or die "unable to load treasurelists\n";
2508	}	2904	}
2509		2905
2510	sub reload_resources {	2906	sub reload_resources {
2511	warn "reloading resource files...\n";	2907	warn "reloading resource files...\n";
2512		2908
2513	reload_regions;	2909	reload_regions;
2514	reload_facedata;	2910	reload_facedata;
		2911	#reload_archetypes;#d#
2515	reload_archetypes;	2912	reload_archetypes;
2516	reload_treasures;	2913	reload_treasures;
2517		2914
2518	warn "finished reloading resource files\n";	2915	warn "finished reloading resource files\n";
2519	}	2916	}
…		…
2521	sub init {	2918	sub init {
2522	reload_resources;	2919	reload_resources;
2523	}	2920	}
2524		2921
2525	sub cfg_load {	2922	sub cfg_load {
2526	open my $fh, "<:utf8", cf::confdir . "/config"	2923	open my $fh, "<:utf8", "$CONFDIR/config"
2527	or return;	2924	or return;
2528		2925
2529	local $/;	2926	local $/;
2530	*CFG = YAML::Syck::Load <$fh>;	2927	*CFG = YAML::Syck::Load <$fh>;
2531		2928
…		…
2576	},	2973	},
2577	);	2974	);
2578	}	2975	}
2579	}	2976	}
2580		2977
		2978	sub write_runtime {
		2979	my $runtime = "$LOCALDIR/runtime";
		2980
		2981	# first touch the runtime file to show we are still running:
		2982	# the fsync below can take a very very long time.
		2983
		2984	IO::AIO::aio_utime $runtime, undef, undef;
		2985
		2986	my $guard = cf::lock_acquire "write_runtime";
		2987
		2988	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2989	or return;
		2990
		2991	my $value = $cf::RUNTIME + 90 + 10;
		2992	# 10 is the runtime save interval, for a monotonic clock
		2993	# 60 allows for the watchdog to kill the server.
		2994
		2995	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2996	and return;
		2997
		2998	# always fsync - this file is important
		2999	aio_fsync $fh
		3000	and return;
		3001
		3002	# touch it again to show we are up-to-date
		3003	aio_utime $fh, undef, undef;
		3004
		3005	close $fh
		3006	or return;
		3007
		3008	aio_rename "$runtime~", $runtime
		3009	and return;
		3010
		3011	warn "runtime file written.\n";
		3012
		3013	1
		3014	}
		3015
2581	sub emergency_save() {	3016	sub emergency_save() {
2582	my $freeze_guard = cf::freeze_mainloop;	3017	my $freeze_guard = cf::freeze_mainloop;
2583		3018
2584	warn "enter emergency perl save\n";	3019	warn "enter emergency perl save\n";
2585		3020
…		…
2660	%EXT_CORO = ();	3095	%EXT_CORO = ();
2661		3096
2662	warn "removing commands";	3097	warn "removing commands";
2663	%COMMAND = ();	3098	%COMMAND = ();
2664		3099
2665	warn "removing ext commands";	3100	warn "removing ext/exti commands";
2666	%EXTCMD = ();	3101	%EXTCMD = ();
		3102	%EXTICMD = ();
2667		3103
2668	warn "unloading/nuking all extensions";	3104	warn "unloading/nuking all extensions";
2669	for my $pkg (@EXTS) {	3105	for my $pkg (@EXTS) {
2670	warn "... unloading $pkg";	3106	warn "... unloading $pkg";
2671		3107
…		…
2789	my $signal = new Coro::Signal;	3225	my $signal = new Coro::Signal;
2790	push @WAIT_FOR_TICK_BEGIN, $signal;	3226	push @WAIT_FOR_TICK_BEGIN, $signal;
2791	$signal->wait;	3227	$signal->wait;
2792	}	3228	}
2793		3229
		3230	my $min = 1e6;#d#
		3231	my $avg = 10;
2794	$TICK_WATCHER = Event->timer (	3232	$TICK_WATCHER = Event->timer (
2795	reentrant => 0,	3233	reentrant => 0,
2796	parked => 1,	3234	parked => 1,
2797	prio => 0,	3235	prio => 0,
2798	at => $NEXT_TICK || $TICK,	3236	at => $NEXT_TICK || $TICK,
…		…
2802	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3240	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2803	unless ++$bug_warning > 10;	3241	unless ++$bug_warning > 10;
2804	return;	3242	return;
2805	}	3243	}
2806		3244
2807	$NOW = Event::time;	3245	$NOW = $tick_start = Event::time;
2808		3246
2809	cf::server_tick; # one server iteration	3247	cf::server_tick; # one server iteration
		3248
		3249	0 && sync_job {#d#
		3250	for(1..10) {
		3251	my $t = Event::time;
		3252	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3253	or die;
		3254
		3255	$map->width (50);
		3256	$map->height (50);
		3257	$map->alloc;
		3258	$map->_load_objects ("/tmp/x.map", 1);
		3259	my $t = Event::time - $t;
		3260
		3261	#next unless $t < 0.0013;#d#
		3262	if ($t < $min) {
		3263	$min = $t;
		3264	}
		3265	$avg = $avg * 0.99 + $t * 0.01;
		3266	}
		3267	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3268	exit 0;
		3269	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3270	};
2810		3271
2811	$RUNTIME += $TICK;	3272	$RUNTIME += $TICK;
2812	$NEXT_TICK += $TICK;	3273	$NEXT_TICK += $TICK;
2813		3274
2814	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3275	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2820	}	3281	}
2821		3282
2822	# my $AFTER = Event::time;	3283	# my $AFTER = Event::time;
2823	# warn $AFTER - $NOW;#d#	3284	# warn $AFTER - $NOW;#d#
2824		3285
		3286	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3287	$sig->send;
		3288	}
		3289	while (my $sig = shift @WAIT_FOR_TICK) {
		3290	$sig->send;
		3291	}
		3292
		3293	$NOW = Event::time;
		3294
2825	# if we are delayed by four ticks or more, skip them all	3295	# if we are delayed by four ticks or more, skip them all
2826	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3296	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2827		3297
2828	$TICK_WATCHER->at ($NEXT_TICK);	3298	$TICK_WATCHER->at ($NEXT_TICK);
2829	$TICK_WATCHER->start;	3299	$TICK_WATCHER->start;
2830		3300
2831	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3301	$LOAD = ($NOW - $tick_start) / $TICK;
2832	$sig->send;	3302	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2833	}
2834	while (my $sig = shift @WAIT_FOR_TICK) {
2835	$sig->send;
2836	}
2837		3303
2838	_post_tick;	3304	_post_tick;
		3305
		3306
2839	},	3307	},
2840	);	3308	);
2841		3309
2842	{	3310	{
2843	BDB::max_poll_time $TICK * 0.1;	3311	BDB::max_poll_time $TICK * 0.1;
…		…
2871		3339
2872	cf::sync_job {	3340	cf::sync_job {
2873	eval {	3341	eval {
2874	BDB::db_env_open	3342	BDB::db_env_open
2875	$DB_ENV,	3343	$DB_ENV,
2876	$BDB_ENV_DIR,	3344	$BDBDIR,
2877	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN	3345	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2878	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,	3346	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2879	0666;	3347	0666;
2880		3348
2881	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;	3349	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
2882		3350
2883	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);	3351	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
2884	$DB_ENV->set_lk_detect;	3352	$DB_ENV->set_lk_detect;
2885	};	3353	};
2886		3354
…		…
2902	prio => 6,	3370	prio => 6,
2903	cb => \&IO::AIO::poll_cb,	3371	cb => \&IO::AIO::poll_cb,
2904	);	3372	);
2905	}	3373	}
2906		3374
		3375	my $_log_backtrace;
		3376
		3377	sub _log_backtrace {
		3378	my ($msg, @addr) = @_;
		3379
		3380	$msg =~ s/\n//;
		3381
		3382	# limit the # of concurrent backtraces
		3383	if ($_log_backtrace < 2) {
		3384	++$_log_backtrace;
		3385	async {
		3386	my @bt = fork_call {
		3387	@addr = map { sprintf "%x", $_ } @addr;
		3388	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3389	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3390	or die "addr2line: $!";
		3391
		3392	my @funcs;
		3393	my @res = <$fh>;
		3394	chomp for @res;
		3395	while (@res) {
		3396	my ($func, $line) = splice @res, 0, 2, ();
		3397	push @funcs, "[$func] $line";
		3398	}
		3399
		3400	@funcs
		3401	};
		3402
		3403	LOG llevInfo, "[ABT] $msg\n";
		3404	LOG llevInfo, "[ABT] $_\n" for @bt;
		3405	--$_log_backtrace;
		3406	};
		3407	} else {
		3408	LOG llevInfo, "[ABT] $msg\n";
		3409	LOG llevInfo, "[ABT] [suppressed]\n";
		3410	}
		3411	}
		3412
2907	# load additional modules	3413	# load additional modules
2908	use cf::pod;	3414	use cf::pod;
2909		3415
2910	END { cf::emergency_save }	3416	END { cf::emergency_save }
2911		3417

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