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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.133 by root, Thu Jan 4 16:19:32 2007 UTC vs.
Revision 1.386 by root, Mon Oct 15 17:50:27 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 Storable;	8	use Socket;
		9	use Event;
9	use Opcode;	10	use Opcode;
10	use Safe;	11	use Safe;
11	use Safe::Hole;	12	use Safe::Hole;
		13	use Storable ();
12		14
13	use Coro 3.3 ();	15	use Coro 4.1 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
		24	use Coro::Util ();
19		25
		26	use JSON::XS ();
		27	use BDB ();
		28	use Data::Dumper;
20	use Digest::MD5;	29	use Digest::MD5;
21	use Fcntl;	30	use Fcntl;
22	use IO::AIO 2.31 ();
23	use YAML::Syck ();	31	use YAML::Syck ();
		32	use IO::AIO 2.51 ();
24	use Time::HiRes;	33	use Time::HiRes;
		34	use Compress::LZF;
		35	use Digest::MD5 ();
25		36
		37	# configure various modules to our taste
		38	#
		39	$Storable::canonical = 1; # reduce rsync transfers
		40	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		41	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		42
26	use Event; $Event::Eval = 1; # no idea why this is required, but it is	43	$Event::Eval = 1; # no idea why this is required, but it is
27		44
28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	45	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
29	$YAML::Syck::ImplicitUnicode = 1;	46	$YAML::Syck::ImplicitUnicode = 1;
30		47
31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	48	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
32		49
33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
34		51
35	our %COMMAND = ();	52	our %COMMAND = ();
36	our %COMMAND_TIME = ();	53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
37	our %EXTCMD = ();	56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
38		60
		61	our $RELOAD; # number of reloads so far
39	our @EVENT;	62	our @EVENT;
40	our $LIBDIR = datadir . "/ext";
41		63
42	our $TICK = MAX_TIME * 1e-6;	64	our $CONFDIR = confdir;
		65	our $DATADIR = datadir;
		66	our $LIBDIR = "$DATADIR/ext";
		67	our $PODDIR = "$DATADIR/pod";
		68	our $MAPDIR = "$DATADIR/" . mapdir;
		69	our $LOCALDIR = localdir;
		70	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		71	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		72	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		73	our $RANDOMDIR = "$LOCALDIR/random";
		74	our $BDBDIR = "$LOCALDIR/db";
		75
		76	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
43	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
44	our $NEXT_TICK;	80	our $NEXT_TICK;
45	our $NOW;	81	our $NOW;
		82	our $USE_FSYNC = 1; # use fsync to write maps - default off
		83
		84	our $BDB_POLL_WATCHER;
		85	our $BDB_DEADLOCK_WATCHER;
		86	our $BDB_CHECKPOINT_WATCHER;
		87	our $BDB_TRICKLE_WATCHER;
		88	our $DB_ENV;
46		89
47	our %CFG;	90	our %CFG;
48		91
49	our $UPTIME; $UPTIME ||= time;	92	our $UPTIME; $UPTIME ||= time;
50	our $RUNTIME;	93	our $RUNTIME;
51		94
52	our %MAP; # all maps	95	our (%PLAYER, %PLAYER_LOADING); # all users
53	our $LINK_MAP; # the special {link} map	96	our (%MAP, %MAP_LOADING ); # all maps
54	our $RANDOM_MAPS = cf::localdir . "/random";	97	our $LINK_MAP; # the special {link} map, which is always available
55	our %EXT_CORO;	98
		99	# used to convert map paths into valid unix filenames by replacing / by ∕
		100	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		101
		102	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		103	our $LOADAVG; # same thing, but with alpha-smoothing
		104	our $tick_start; # for load detecting purposes
56		105
57	binmode STDOUT;	106	binmode STDOUT;
58	binmode STDERR;	107	binmode STDERR;
59		108
60	# read virtual server time, if available	109	# read virtual server time, if available
61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	110	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
62	open my $fh, "<", cf::localdir . "/runtime"	111	open my $fh, "<", "$LOCALDIR/runtime"
63	or die "unable to read runtime file: $!";	112	or die "unable to read runtime file: $!";
64	$RUNTIME = <$fh> + 0.;	113	$RUNTIME = <$fh> + 0.;
65	}	114	}
66		115
67	mkdir cf::localdir;	116	mkdir $_
68	mkdir cf::localdir . "/" . cf::playerdir;	117	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
69	mkdir cf::localdir . "/" . cf::tmpdir;
70	mkdir cf::localdir . "/" . cf::uniquedir;
71	mkdir $RANDOM_MAPS;
72		118
73	# a special map that is always available
74	our $LINK_MAP;
75	our $EMERGENCY_POSITION;	119	our $EMERGENCY_POSITION;
		120
		121	sub cf::map::normalise;
76		122
77	#############################################################################	123	#############################################################################
78		124
79	=head2 GLOBAL VARIABLES	125	=head2 GLOBAL VARIABLES
80		126
…		…
87	=item $cf::RUNTIME	133	=item $cf::RUNTIME
88		134
89	The time this server has run, starts at 0 and is increased by $cf::TICK on	135	The time this server has run, starts at 0 and is increased by $cf::TICK on
90	every server tick.	136	every server tick.
91		137
92	=item $cf::LIBDIR	138	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		139	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		140	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
93		141
94	The perl library directory, where extensions and cf-specific modules can	142	Various directories - "/etc", read-only install directory, perl-library
95	be found. It will be added to C<@INC> automatically.	143	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		144	unique-items directory, player file directory, random maps directory and
		145	database environment.
96		146
97	=item $cf::NOW	147	=item $cf::NOW
98		148
99	The time of the last (current) server tick.	149	The time of the last (current) server tick.
100		150
101	=item $cf::TICK	151	=item $cf::TICK
102		152
103	The interval between server ticks, in seconds.	153	The interval between server ticks, in seconds.
		154
		155	=item $cf::LOADAVG
		156
		157	The current CPU load on the server (alpha-smoothed), as a value between 0
		158	(none) and 1 (overloaded), indicating how much time is spent on processing
		159	objects per tick. Healthy values are < 0.5.
		160
		161	=item $cf::LOAD
		162
		163	The raw value load value from the last tick.
104		164
105	=item %cf::CFG	165	=item %cf::CFG
106		166
107	Configuration for the server, loaded from C</etc/crossfire/config>, or	167	Configuration for the server, loaded from C</etc/crossfire/config>, or
108	from wherever your confdir points to.	168	from wherever your confdir points to.
		169
		170	=item cf::wait_for_tick, cf::wait_for_tick_begin
		171
		172	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		173	returns directly I<after> the tick processing (and consequently, can only wake one process
		174	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		175
		176	=item @cf::INVOKE_RESULTS
		177
		178	This array contains the results of the last C<invoke ()> call. When
		179	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		180	that call.
109		181
110	=back	182	=back
111		183
112	=cut	184	=cut
113		185
114	BEGIN {	186	BEGIN {
115	*CORE::GLOBAL::warn = sub {	187	*CORE::GLOBAL::warn = sub {
116	my $msg = join "", @_;	188	my $msg = join "", @_;
117	utf8::encode $msg;
118		189
119	$msg .= "\n"	190	$msg .= "\n"
120	unless $msg =~ /\n$/;	191	unless $msg =~ /\n$/;
121		192
		193	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		194
122	LOG llevError, "cfperl: $msg";	195	LOG llevError, $msg;
123	};	196	};
124	}	197	}
125		198
126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	199	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	200	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	201	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	202	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	203	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		204	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	205	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
132		206
133	# we bless all objects into (empty) derived classes to force a method lookup	207	# we bless all objects into (empty) derived classes to force a method lookup
134	# within the Safe compartment.	208	# within the Safe compartment.
135	for my $pkg (qw(	209	for my $pkg (qw(
136	cf::global cf::attachable	210	cf::global cf::attachable
…		…
145		219
146	$Event::DIED = sub {	220	$Event::DIED = sub {
147	warn "error in event callback: @_";	221	warn "error in event callback: @_";
148	};	222	};
149		223
150	my %ext_pkg;	224	#############################################################################
151	my @exts;
152	my @hook;
153		225
154	=head2 UTILITY FUNCTIONS	226	=head2 UTILITY FUNCTIONS
155		227
156	=over 4	228	=over 4
157		229
158	=cut	230	=item dumpval $ref
159		231
160	use JSON::Syck (); # TODO# replace by JSON::PC once working	232	=cut
		233
		234	sub dumpval {
		235	eval {
		236	local $SIG{__DIE__};
		237	my $d;
		238	if (1) {
		239	$d = new Data::Dumper([$_[0]], ["*var"]);
		240	$d->Terse(1);
		241	$d->Indent(2);
		242	$d->Quotekeys(0);
		243	$d->Useqq(1);
		244	#$d->Bless(...);
		245	$d->Seen($_[1]) if @_ > 1;
		246	$d = $d->Dump();
		247	}
		248	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		249	$d
		250	} || "[unable to dump $_[0]: '$@']";
		251	}
161		252
162	=item $ref = cf::from_json $json	253	=item $ref = cf::from_json $json
163		254
164	Converts a JSON string into the corresponding perl data structure.	255	Converts a JSON string into the corresponding perl data structure.
165		256
166	=cut
167
168	sub from_json($) {
169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
170	JSON::Syck::Load $_[0]
171	}
172
173	=item $json = cf::to_json $ref	257	=item $json = cf::to_json $ref
174		258
175	Converts a perl data structure into its JSON representation.	259	Converts a perl data structure into its JSON representation.
176		260
177	=cut	261	=cut
178		262
179	sub to_json($) {	263	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
181	JSON::Syck::Dump $_[0]
182	}
183		264
184	=item my $guard = cf::guard { BLOCK }	265	sub to_json ($) { $json_coder->encode ($_[0]) }
185		266	sub from_json ($) { $json_coder->decode ($_[0]) }
186	Run the given callback when the guard object gets destroyed (useful for
187	coroutine cancellations).
188
189	You can call C<< ->cancel >> on the guard object to stop the block from
190	being executed.
191
192	=cut
193
194	sub guard(&) {
195	bless \(my $cb = $_[0]), cf::guard::;
196	}
197
198	sub cf::guard::cancel {
199	${$_[0]} = sub { };
200	}
201
202	sub cf::guard::DESTROY {
203	${$_[0]}->();
204	}
205		267
206	=item cf::lock_wait $string	268	=item cf::lock_wait $string
207		269
208	Wait until the given lock is available. See cf::lock_acquire.	270	Wait until the given lock is available. See cf::lock_acquire.
209		271
210	=item my $lock = cf::lock_acquire $string	272	=item my $lock = cf::lock_acquire $string
211		273
212	Wait until the given lock is available and then acquires it and returns	274	Wait until the given lock is available and then acquires it and returns
213	a guard object. If the guard object gets destroyed (goes out of scope,	275	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
214	for example when the coroutine gets canceled), the lock is automatically	276	for example when the coroutine gets canceled), the lock is automatically
215	returned.	277	returned.
216		278
		279	Locks are *not* recursive, locking from the same coro twice results in a
		280	deadlocked coro.
		281
217	Lock names should begin with a unique identifier (for example, cf::map::find	282	Lock names should begin with a unique identifier (for example, cf::map::find
218	uses map_find and cf::map::load uses map_load).	283	uses map_find and cf::map::load uses map_load).
219		284
		285	=item $locked = cf::lock_active $string
		286
		287	Return true if the lock is currently active, i.e. somebody has locked it.
		288
220	=cut	289	=cut
221		290
222	our %LOCK;	291	our %LOCK;
		292	our %LOCKER;#d#
223		293
224	sub lock_wait($) {	294	sub lock_wait($) {
225	my ($key) = @_;	295	my ($key) = @_;
		296
		297	if ($LOCKER{$key} == $Coro::current) {#d#
		298	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		299	return;#d#
		300	}#d#
226		301
227	# wait for lock, if any	302	# wait for lock, if any
228	while ($LOCK{$key}) {	303	while ($LOCK{$key}) {
229	push @{ $LOCK{$key} }, $Coro::current;	304	push @{ $LOCK{$key} }, $Coro::current;
230	Coro::schedule;	305	Coro::schedule;
…		…
236		311
237	# wait, to be sure we are not locked	312	# wait, to be sure we are not locked
238	lock_wait $key;	313	lock_wait $key;
239		314
240	$LOCK{$key} = [];	315	$LOCK{$key} = [];
		316	$LOCKER{$key} = $Coro::current;#d#
241		317
242	cf::guard {	318	Coro::guard {
		319	delete $LOCKER{$key};#d#
243	# wake up all waiters, to be on the safe side	320	# wake up all waiters, to be on the safe side
244	$_->ready for @{ delete $LOCK{$key} };	321	$_->ready for @{ delete $LOCK{$key} };
245	}	322	}
246	}	323	}
247		324
248	=item cf::async { BLOCK }	325	sub lock_active($) {
249
250	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
251	error instead of exiting the server in case of a problem.
252
253	=cut
254
255	sub async(&) {
256	my ($cb) = @_;	326	my ($key) = @_;
257		327
258	Coro::async {	328	! ! $LOCK{$key}
259	eval { $cb->() };
260	warn $@ if $@;
261	}
262	}	329	}
263		330
264	sub freeze_mainloop {	331	sub freeze_mainloop {
265	return unless $TICK_WATCHER->is_active;	332	return unless $TICK_WATCHER->is_active;
266		333
267	my $guard = guard { $TICK_WATCHER->start };	334	my $guard = Coro::guard {
		335	$TICK_WATCHER->start;
		336	};
268	$TICK_WATCHER->stop;	337	$TICK_WATCHER->stop;
269	$guard	338	$guard
270	}	339	}
271		340
		341	=item cf::get_slot $time[, $priority[, $name]]
		342
		343	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		344	This call blocks and returns only when you have at least C<$time> seconds
		345	of cpu time till the next tick. The slot is only valid till the next cede.
		346
		347	The optional C<$name> can be used to identify the job to run. It might be
		348	used for statistical purposes and should identify the same time-class.
		349
		350	Useful for short background jobs.
		351
		352	=cut
		353
		354	our @SLOT_QUEUE;
		355	our $SLOT_QUEUE;
		356
		357	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		358	$SLOT_QUEUE = Coro::async {
		359	$Coro::current->desc ("timeslot manager");
		360
		361	my $signal = new Coro::Signal;
		362
		363	while () {
		364	next_job:
		365	my $avail = cf::till_tick;
		366	if ($avail > 0.01) {
		367	for (0 .. $#SLOT_QUEUE) {
		368	if ($SLOT_QUEUE[$_][0] < $avail) {
		369	my $job = splice @SLOT_QUEUE, $_, 1, ();
		370	$job->[2]->send;
		371	Coro::cede;
		372	goto next_job;
		373	}
		374	}
		375	}
		376
		377	if (@SLOT_QUEUE) {
		378	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		379	push @cf::WAIT_FOR_TICK, $signal;
		380	$signal->wait;
		381	} else {
		382	Coro::schedule;
		383	}
		384	}
		385	};
		386
		387	sub get_slot($;$$) {
		388	my ($time, $pri, $name) = @_;
		389
		390	$time = $TICK * .6 if $time > $TICK * .6;
		391	my $sig = new Coro::Signal;
		392
		393	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		394	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		395	$SLOT_QUEUE->ready;
		396	$sig->wait;
		397	}
		398
		399	=item cf::async { BLOCK }
		400
		401	Currently the same as Coro::async_pool, meaning you cannot use
		402	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		403	thing you are allowed to do is call C<prio> on it.
		404
		405	=cut
		406
		407	BEGIN { *async = \&Coro::async_pool }
		408
272	=item cf::sync_job { BLOCK }	409	=item cf::sync_job { BLOCK }
273		410
274	The design of crossfire+ requires that the main coro ($Coro::main) is	411	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
275	always able to handle events or runnable, as crossfire+ is only partly	412	is always able to handle events or runnable, as Crossfire TRT is only
276	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	413	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		414	acceptable.
277		415
278	If it must be done, put the blocking parts into C<sync_job>. This will run	416	If it must be done, put the blocking parts into C<sync_job>. This will run
279	the given BLOCK in another coroutine while waiting for the result. The	417	the given BLOCK in another coroutine while waiting for the result. The
280	server will be frozen during this time, so the block should either finish	418	server will be frozen during this time, so the block should either finish
281	fast or be very important.	419	fast or be very important.
…		…
284		422
285	sub sync_job(&) {	423	sub sync_job(&) {
286	my ($job) = @_;	424	my ($job) = @_;
287		425
288	if ($Coro::current == $Coro::main) {	426	if ($Coro::current == $Coro::main) {
		427	my $time = Event::time;
		428
289	# this is the main coro, too bad, we have to block	429	# this is the main coro, too bad, we have to block
290	# till the operation succeeds, freezing the server :/	430	# till the operation succeeds, freezing the server :/
291		431
		432	LOG llevError, Carp::longmess "sync job";#d#
		433
292	# TODO: use suspend/resume instead	434	# TODO: use suspend/resume instead
293	# (but this is cancel-safe)	435	# (but this is cancel-safe)
294	my $freeze_guard = freeze_mainloop;	436	my $freeze_guard = freeze_mainloop;
295		437
296	my $busy = 1;	438	my $busy = 1;
297	my @res;	439	my @res;
298		440
299	(Coro::async {	441	(async {
		442	$Coro::current->desc ("sync job coro");
300	@res = eval { $job->() };	443	@res = eval { $job->() };
301	warn $@ if $@;	444	warn $@ if $@;
302	undef $busy;	445	undef $busy;
303	})->prio (Coro::PRIO_MAX);	446	})->prio (Coro::PRIO_MAX);
304		447
305	while ($busy) {	448	while ($busy) {
306	Coro::cede_notself;	449	Coro::cede or Event::one_event;
307	Event::one_event unless Coro::nready;
308	}	450	}
		451
		452	$time = Event::time - $time;
		453
		454	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		455	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		456
		457	$tick_start += $time; # do not account sync jobs to server load
309		458
310	wantarray ? @res : $res[0]	459	wantarray ? @res : $res[0]
311	} else {	460	} else {
312	# we are in another coroutine, how wonderful, everything just works	461	# we are in another coroutine, how wonderful, everything just works
313		462
314	$job->()	463	$job->()
315	}	464	}
316	}	465	}
317		466
318	=item $coro = cf::coro { BLOCK }	467	=item $coro = cf::async_ext { BLOCK }
319		468
320	Creates and returns a new coro. This coro is automcatially being canceled	469	Like async, but this coro is automatically being canceled when the
321	when the extension calling this is being unloaded.	470	extension calling this is being unloaded.
322		471
323	=cut	472	=cut
324		473
325	sub coro(&) {	474	sub async_ext(&) {
326	my $cb = shift;	475	my $cb = shift;
327		476
328	my $coro = &cf::async ($cb);	477	my $coro = &Coro::async ($cb);
329		478
330	$coro->on_destroy (sub {	479	$coro->on_destroy (sub {
331	delete $EXT_CORO{$coro+0};	480	delete $EXT_CORO{$coro+0};
332	});	481	});
333	$EXT_CORO{$coro+0} = $coro;	482	$EXT_CORO{$coro+0} = $coro;
334		483
335	$coro	484	$coro
336	}	485	}
337		486
338	sub write_runtime {	487	=item fork_call { }, $args
339	my $runtime = cf::localdir . "/runtime";
340		488
341	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	489	Executes the given code block with the given arguments in a seperate
342	or return;	490	process, returning the results. Everything must be serialisable with
		491	Coro::Storable. May, of course, block. Note that the executed sub may
		492	never block itself or use any form of Event handling.
343		493
344	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock	494	=cut
345	(aio_write $fh, 0, (length $value), $value, 0) <= 0
346	and return;
347		495
348	aio_fsync $fh	496	sub fork_call(&@) {
349	and return;	497	my ($cb, @args) = @_;
350		498
351	close $fh	499	# we seemingly have to make a local copy of the whole thing,
352	or return;	500	# otherwise perl prematurely frees the stuff :/
		501	# TODO: investigate and fix (likely this will be rather laborious)
353		502
354	aio_rename "$runtime~", $runtime	503	my @res = Coro::Util::fork_eval {
355	and return;	504	reset_signals;
		505	&$cb
		506	}, @args;
356		507
		508	wantarray ? @res : $res[-1]
		509	}
		510
		511	=item $value = cf::db_get $family => $key
		512
		513	Returns a single value from the environment database.
		514
		515	=item cf::db_put $family => $key => $value
		516
		517	Stores the given C<$value> in the family. It can currently store binary
		518	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		519
		520	=item $db = cf::db_table "name"
		521
		522	Create and/or open a new database table. The string must not be "db" and must be unique
		523	within each server.
		524
		525	=cut
		526
		527	sub db_table($) {
		528	my ($name) = @_;
		529	my $db = BDB::db_create $DB_ENV;
		530
		531	eval {
		532	$db->set_flags (BDB::CHKSUM);
		533
		534	utf8::encode $name;
		535	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		536	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		537	cf::cleanup "db_open(db): $!" if $!;
		538	};
		539	cf::cleanup "db_open(db): $@" if $@;
		540
		541	$db
		542	}
		543
		544	our $DB;
		545
		546	sub db_init {
		547	cf::sync_job {
		548	$DB ||= db_table "db";
		549	};
		550	}
		551
		552	sub db_get($$) {
		553	my $key = "$_[0]/$_[1]";
		554
		555	cf::sync_job {
		556	BDB::db_get $DB, undef, $key, my $data;
		557
		558	$! ? ()
		559	: $data
357	1	560	}
		561	}
		562
		563	sub db_put($$$) {
		564	BDB::dbreq_pri 4;
		565	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		566	}
		567
		568	=item cf::cache $id => [$paths...], $processversion => $process
		569
		570	Generic caching function that returns the value of the resource $id,
		571	caching and regenerating as required.
		572
		573	This function can block.
		574
		575	=cut
		576
		577	sub cache {
		578	my ($id, $src, $processversion, $process) = @_;
		579
		580	my $meta =
		581	join "\x00",
		582	$processversion,
		583	map {
		584	aio_stat $_
		585	and Carp::croak "$_: $!";
		586
		587	($_, (stat _)[7,9])
		588	} @$src;
		589
		590	my $dbmeta = db_get cache => "$id/meta";
		591	if ($dbmeta ne $meta) {
		592	# changed, we may need to process
		593
		594	my @data;
		595	my $md5;
		596
		597	for (0 .. $#$src) {
		598	0 <= aio_load $src->[$_], $data[$_]
		599	or Carp::croak "$src->[$_]: $!";
		600	}
		601
		602	# if processing is expensive, check
		603	# checksum first
		604	if (1) {
		605	$md5 =
		606	join "\x00",
		607	$processversion,
		608	map {
		609	cf::cede_to_tick;
		610	($src->[$_], Digest::MD5::md5_hex $data[$_])
		611	} 0.. $#$src;
		612
		613
		614	my $dbmd5 = db_get cache => "$id/md5";
		615	if ($dbmd5 eq $md5) {
		616	db_put cache => "$id/meta", $meta;
		617
		618	return db_get cache => "$id/data";
		619	}
		620	}
		621
		622	my $t1 = Time::HiRes::time;
		623	my $data = $process->(\@data);
		624	my $t2 = Time::HiRes::time;
		625
		626	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		627
		628	db_put cache => "$id/data", $data;
		629	db_put cache => "$id/md5" , $md5;
		630	db_put cache => "$id/meta", $meta;
		631
		632	return $data;
		633	}
		634
		635	db_get cache => "$id/data"
		636	}
		637
		638	=item cf::datalog type => key => value, ...
		639
		640	Log a datalog packet of the given type with the given key-value pairs.
		641
		642	=cut
		643
		644	sub datalog($@) {
		645	my ($type, %kv) = @_;
		646	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
358	}	647	}
359		648
360	=back	649	=back
361		650
362	=cut	651	=cut
363
364	#############################################################################
365
366	package cf::path;
367
368	sub new {
369	my ($class, $path, $base) = @_;
370
371	$path = $path->as_string if ref $path;
372
373	my $self = bless { }, $class;
374
375	# {... are special paths that are not touched
376	# ?xxx/... are special absolute paths
377	# ?random/... random maps
378	# /! non-realised random map exit
379	# /... normal maps
380	# ~/... per-player maps without a specific player (DO NOT USE)
381	# ~user/... per-player map of a specific user
382
383	if ($path =~ /^{/) {
384	# fine as it is
385	} elsif ($path =~ s{^\?random/}{}) {
386	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
387	$self->{random} = cf::from_json $data;
388	} else {
389	if ($path =~ s{^~([^/]+)?}{}) {
390	$self->{user_rel} = 1;
391
392	if (defined $1) {
393	$self->{user} = $1;
394	} elsif ($base =~ m{^~([^/]+)/}) {
395	$self->{user} = $1;
396	} else {
397	warn "cannot resolve user-relative path without user <$path,$base>\n";
398	}
399	} elsif ($path =~ /^\//) {
400	# already absolute
401	} else {
402	$base =~ s{[^/]+/?$}{};
403	return $class->new ("$base/$path");
404	}
405
406	for ($path) {
407	redo if s{/\.?/}{/};
408	redo if s{/[^/]+/\.\./}{/};
409	}
410	}
411
412	$self->{path} = $path;
413
414	$self
415	}
416
417	# the name / primary key / in-game path
418	sub as_string {
419	my ($self) = @_;
420
421	$self->{user_rel} ? "~$self->{user}$self->{path}"
422	: $self->{random} ? "?random/$self->{path}"
423	: $self->{path}
424	}
425
426	# the displayed name, this is a one way mapping
427	sub visible_name {
428	my ($self) = @_;
429
430	# if (my $rmp = $self->{random}) {
431	# # todo: be more intelligent about this
432	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
433	# } else {
434	$self->as_string
435	# }
436	}
437
438	# escape the /'s in the path
439	sub _escaped_path {
440	# ∕ is U+2215
441	(my $path = $_[0]{path}) =~ s/\//∕/g;
442	$path
443	}
444
445	# the original (read-only) location
446	sub load_path {
447	my ($self) = @_;
448
449	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
450	}
451
452	# the temporary/swap location
453	sub save_path {
454	my ($self) = @_;
455
456	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
457	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
458	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
459	}
460
461	# the unique path, might be eq to save_path
462	sub uniq_path {
463	my ($self) = @_;
464
465	$self->{user_rel} || $self->{random}
466	? undef
467	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
468	}
469
470	# return random map parameters, or undef
471	sub random_map_params {
472	my ($self) = @_;
473
474	$self->{random}
475	}
476
477	# this is somewhat ugly, but style maps do need special treatment
478	sub is_style_map {
479	$_[0]{path} =~ m{^/styles/}
480	}
481
482	package cf;
483		652
484	#############################################################################	653	#############################################################################
485		654
486	=head2 ATTACHABLE OBJECTS	655	=head2 ATTACHABLE OBJECTS
487		656
…		…
489	attach callbacks/event handlers (a collection of which is called an "attachment")	658	attach callbacks/event handlers (a collection of which is called an "attachment")
490	to it. All such attachable objects support the following methods.	659	to it. All such attachable objects support the following methods.
491		660
492	In the following description, CLASS can be any of C<global>, C<object>	661	In the following description, CLASS can be any of C<global>, C<object>
493	C<player>, C<client> or C<map> (i.e. the attachable objects in	662	C<player>, C<client> or C<map> (i.e. the attachable objects in
494	crossfire+).	663	Crossfire TRT).
495		664
496	=over 4	665	=over 4
497		666
498	=item $attachable->attach ($attachment, key => $value...)	667	=item $attachable->attach ($attachment, key => $value...)
499		668
…		…
613	our @CB_TYPE = (); # registry for type (cf-object class) based events	782	our @CB_TYPE = (); # registry for type (cf-object class) based events
614	our @CB_MAP = ();	783	our @CB_MAP = ();
615		784
616	my %attachment;	785	my %attachment;
617		786
		787	sub cf::attachable::thawer_merge {
		788	# simply override everything except _meta
		789	local $_[0]{_meta};
		790	%{$_[0]} = %{$_[1]};
		791	}
		792
618	sub _attach_cb($$$$) {	793	sub _attach_cb($$$$) {
619	my ($registry, $event, $prio, $cb) = @_;	794	my ($registry, $event, $prio, $cb) = @_;
620		795
621	use sort 'stable';	796	use sort 'stable';
622		797
…		…
656	$registry = $CB_TYPE[$object_type] ||= [];	831	$registry = $CB_TYPE[$object_type] ||= [];
657		832
658	} elsif ($type eq "subtype") {	833	} elsif ($type eq "subtype") {
659	defined $object_type or Carp::croak "subtype specified without type";	834	defined $object_type or Carp::croak "subtype specified without type";
660	my $object_subtype = shift @arg;	835	my $object_subtype = shift @arg;
661	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	836	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
662		837
663	} elsif ($type eq "package") {	838	} elsif ($type eq "package") {
664	my $pkg = shift @arg;	839	my $pkg = shift @arg;
665		840
666	while (my ($name, $id) = each %cb_id) {	841	while (my ($name, $id) = each %cb_id) {
…		…
695	_attach $registry, $klass, @attach;	870	_attach $registry, $klass, @attach;
696	}	871	}
697		872
698	$obj->{$name} = \%arg;	873	$obj->{$name} = \%arg;
699	} else {	874	} else {
700	warn "object uses attachment '$name' that is not available, postponing.\n";	875	warn "object uses attachment '$name' which is not available, postponing.\n";
701	}	876	}
702		877
703	$obj->{_attachment}{$name} = undef;	878	$obj->{_attachment}{$name} = undef;
704	}	879	}
705		880
…		…
707	if (ref $_[0]) {	882	if (ref $_[0]) {
708	_object_attach @_;	883	_object_attach @_;
709	} else {	884	} else {
710	_attach shift->_attach_registry, @_;	885	_attach shift->_attach_registry, @_;
711	}	886	}
		887	_recalc_want;
712	};	888	};
713		889
714	# all those should be optimised	890	# all those should be optimised
715	sub cf::attachable::detach {	891	sub cf::attachable::detach {
716	my ($obj, $name) = @_;	892	my ($obj, $name) = @_;
…		…
719	delete $obj->{_attachment}{$name};	895	delete $obj->{_attachment}{$name};
720	reattach ($obj);	896	reattach ($obj);
721	} else {	897	} else {
722	Carp::croak "cannot, currently, detach class attachments";	898	Carp::croak "cannot, currently, detach class attachments";
723	}	899	}
		900	_recalc_want;
724	};	901	};
725		902
726	sub cf::attachable::attached {	903	sub cf::attachable::attached {
727	my ($obj, $name) = @_;	904	my ($obj, $name) = @_;
728		905
…		…
743	";	920	";
744	die if $@;	921	die if $@;
745	}	922	}
746		923
747	our $override;	924	our $override;
748	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	925	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
749		926
750	sub override {	927	sub override {
751	$override = 1;	928	$override = 1;
752	@invoke_results = ();	929	@INVOKE_RESULTS = (@_);
753	}	930	}
754		931
755	sub do_invoke {	932	sub do_invoke {
756	my $event = shift;	933	my $event = shift;
757	my $callbacks = shift;	934	my $callbacks = shift;
758		935
759	@invoke_results = ();	936	@INVOKE_RESULTS = ();
760		937
761	local $override;	938	local $override;
762		939
763	for (@$callbacks) {	940	for (@$callbacks) {
764	eval { &{$_->[1]} };	941	eval { &{$_->[1]} };
…		…
781		958
782	Generate an object-specific event with the given arguments.	959	Generate an object-specific event with the given arguments.
783		960
784	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	961	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
785	removed in future versions), and there is no public API to access override	962	removed in future versions), and there is no public API to access override
786	results (if you must, access C<@cf::invoke_results> directly).	963	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
787		964
788	=back	965	=back
789		966
790	=cut	967	=cut
791		968
792	#############################################################################	969	#############################################################################
793	# object support	970	# object support
		971
		972	sub _object_equal($$);
		973	sub _object_equal($$) {
		974	my ($a, $b) = @_;
		975
		976	return 0 unless (ref $a) eq (ref $b);
		977
		978	if ("HASH" eq ref $a) {
		979	my @ka = keys %$a;
		980	my @kb = keys %$b;
		981
		982	return 0 if @ka != @kb;
		983
		984	for (0 .. $#ka) {
		985	return 0 unless $ka[$_] eq $kb[$_];
		986	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		987	}
		988
		989	} elsif ("ARRAY" eq ref $a) {
		990
		991	return 0 if @$a != @$b;
		992
		993	for (0 .. $#$a) {
		994	return 0 unless _object_equal $a->[$_], $b->[$_];
		995	}
		996
		997	} elsif ($a ne $b) {
		998	return 0;
		999	}
		1000
		1001	1
		1002	}
		1003
		1004	our $SLOW_MERGES;#d#
		1005	sub _can_merge {
		1006	my ($ob1, $ob2) = @_;
		1007
		1008	++$SLOW_MERGES;#d#
		1009
		1010	# we do the slow way here
		1011	return _object_equal $ob1, $ob2
		1012	}
794		1013
795	sub reattach {	1014	sub reattach {
796	# basically do the same as instantiate, without calling instantiate	1015	# basically do the same as instantiate, without calling instantiate
797	my ($obj) = @_;	1016	my ($obj) = @_;
		1017
		1018	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
798		1019
799	my $registry = $obj->registry;	1020	my $registry = $obj->registry;
800		1021
801	@$registry = ();	1022	@$registry = ();
802		1023
…		…
843	sub object_freezer_save {	1064	sub object_freezer_save {
844	my ($filename, $rdata, $objs) = @_;	1065	my ($filename, $rdata, $objs) = @_;
845		1066
846	sync_job {	1067	sync_job {
847	if (length $$rdata) {	1068	if (length $$rdata) {
		1069	utf8::decode (my $decname = $filename);
848	warn sprintf "saving %s (%d,%d)\n",	1070	warn sprintf "saving %s (%d,%d)\n",
849	$filename, length $$rdata, scalar @$objs;	1071	$decname, length $$rdata, scalar @$objs;
850		1072
851	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	1073	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
852	chmod SAVE_MODE, $fh;	1074	chmod SAVE_MODE, $fh;
853	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	1075	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
854	aio_fsync $fh;	1076	aio_fsync $fh if $cf::USE_FSYNC;
855	close $fh;	1077	close $fh;
856		1078
857	if (@$objs) {	1079	if (@$objs) {
858	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	1080	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
859	chmod SAVE_MODE, $fh;	1081	chmod SAVE_MODE, $fh;
860	my $data = Storable::nfreeze { version => 1, objs => $objs };	1082	my $data = Coro::Storable::blocking_nfreeze { version => 1, objs => $objs };
861	aio_write $fh, 0, (length $data), $data, 0;	1083	aio_write $fh, 0, (length $data), $data, 0;
862	aio_fsync $fh;	1084	aio_fsync $fh if $cf::USE_FSYNC;
863	close $fh;	1085	close $fh;
864	aio_rename "$filename.pst~", "$filename.pst";	1086	aio_rename "$filename.pst~", "$filename.pst";
865	}	1087	}
866	} else {	1088	} else {
867	aio_unlink "$filename.pst";	1089	aio_unlink "$filename.pst";
…		…
873	}	1095	}
874	} else {	1096	} else {
875	aio_unlink $filename;	1097	aio_unlink $filename;
876	aio_unlink "$filename.pst";	1098	aio_unlink "$filename.pst";
877	}	1099	}
878	}	1100	};
879	}	1101	}
880		1102
881	sub object_freezer_as_string {	1103	sub object_freezer_as_string {
882	my ($rdata, $objs) = @_;	1104	my ($rdata, $objs) = @_;
883		1105
…		…
895	or return;	1117	or return;
896		1118
897	unless (aio_stat "$filename.pst") {	1119	unless (aio_stat "$filename.pst") {
898	(aio_load "$filename.pst", $av) >= 0	1120	(aio_load "$filename.pst", $av) >= 0
899	or return;	1121	or return;
900	$av = eval { (Storable::thaw $av)->{objs} };
901	}
902		1122
		1123	my $st = eval { Coro::Storable::thaw $av }
		1124	|| eval { my $guard = Coro::Storable::guard; Storable::thaw $av }; #d# compatibility, remove
		1125	$av = $st->{objs};
		1126	}
		1127
		1128	utf8::decode (my $decname = $filename);
903	warn sprintf "loading %s (%d)\n",	1129	warn sprintf "loading %s (%d,%d)\n",
904	$filename, length $data, scalar @{$av || []};#d#	1130	$decname, length $data, scalar @{$av || []};
		1131
905	return ($data, $av);	1132	($data, $av)
906	}	1133	}
		1134
		1135	=head2 COMMAND CALLBACKS
		1136
		1137	=over 4
		1138
		1139	=cut
907		1140
908	#############################################################################	1141	#############################################################################
909	# command handling &c	1142	# command handling &c
910		1143
911	=item cf::register_command $name => \&callback($ob,$args);	1144	=item cf::register_command $name => \&callback($ob,$args);
…		…
924	push @{ $COMMAND{$name} }, [$caller, $cb];	1157	push @{ $COMMAND{$name} }, [$caller, $cb];
925	}	1158	}
926		1159
927	=item cf::register_extcmd $name => \&callback($pl,$packet);	1160	=item cf::register_extcmd $name => \&callback($pl,$packet);
928		1161
929	Register a callbackf ro execution when the client sends an extcmd packet.	1162	Register a callback for execution when the client sends an (synchronous)
		1163	extcmd packet. Ext commands will be processed in the order they are
		1164	received by the server, like other user commands. The first argument is
		1165	the logged-in player. Ext commands can only be processed after a player
		1166	has logged in successfully.
930		1167
931	If the callback returns something, it is sent back as if reply was being	1168	If the callback returns something, it is sent back as if reply was being
932	called.	1169	called.
933		1170
		1171	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1172
		1173	Register a callback for execution when the client sends an (asynchronous)
		1174	exticmd packet. Exti commands are processed by the server as soon as they
		1175	are received, i.e. out of order w.r.t. other commands. The first argument
		1176	is a client socket. Exti commands can be received anytime, even before
		1177	log-in.
		1178
		1179	If the callback returns something, it is sent back as if reply was being
		1180	called.
		1181
934	=cut	1182	=cut
935		1183
936	sub register_extcmd {	1184	sub register_extcmd {
937	my ($name, $cb) = @_;	1185	my ($name, $cb) = @_;
938		1186
939	my $caller = caller;
940	#warn "registering extcmd '$name' to '$caller'";
941
942	$EXTCMD{$name} = [$cb, $caller];	1187	$EXTCMD{$name} = $cb;
		1188	}
		1189
		1190	sub register_exticmd {
		1191	my ($name, $cb) = @_;
		1192
		1193	$EXTICMD{$name} = $cb;
943	}	1194	}
944		1195
945	cf::player->attach (	1196	cf::player->attach (
946	on_command => sub {	1197	on_command => sub {
947	my ($pl, $name, $params) = @_;	1198	my ($pl, $name, $params) = @_;
…		…
956	cf::override;	1207	cf::override;
957	},	1208	},
958	on_extcmd => sub {	1209	on_extcmd => sub {
959	my ($pl, $buf) = @_;	1210	my ($pl, $buf) = @_;
960		1211
961	my $msg = eval { from_json $buf };	1212	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
962		1213
963	if (ref $msg) {	1214	if (ref $msg) {
		1215	my ($type, $reply, @payload) =
		1216	"ARRAY" eq ref $msg
		1217	? @$msg
		1218	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1219
		1220	my @reply;
		1221
964	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1222	if (my $cb = $EXTCMD{$type}) {
965	if (my %reply = $cb->[0]->($pl, $msg)) {	1223	@reply = $cb->($pl, @payload);
966	$pl->ext_reply ($msg->{msgid}, %reply);
967	}
968	}	1224	}
		1225
		1226	$pl->ext_reply ($reply, @reply)
		1227	if $reply;
		1228
969	} else {	1229	} else {
970	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1230	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
971	}	1231	}
972		1232
973	cf::override;	1233	cf::override;
974	},	1234	},
975	);	1235	);
976		1236
977	sub register {
978	my ($base, $pkg) = @_;
979
980	#TODO
981	}
982
983	sub load_extension {	1237	sub load_extensions {
		1238	cf::sync_job {
		1239	my %todo;
		1240
		1241	for my $path (<$LIBDIR/*.ext>) {
		1242	next unless -r $path;
		1243
		1244	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1245	my $base = $1;
		1246	my $pkg = $1;
		1247	$pkg =~ s/[^[:word:]]/_/g;
		1248	$pkg = "ext::$pkg";
		1249
		1250	open my $fh, "<:utf8", $path
		1251	or die "$path: $!";
		1252
		1253	my $source = do { local $/; <$fh> };
		1254
		1255	my %ext = (
		1256	path => $path,
		1257	base => $base,
		1258	pkg => $pkg,
		1259	);
		1260
		1261	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1262	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1263
		1264	$ext{source} =
		1265	"package $pkg; use strict; use utf8;\n"
		1266	. "#line 1 \"$path\"\n{\n"
		1267	. $source
		1268	. "\n};\n1";
		1269
		1270	$todo{$base} = \%ext;
		1271	}
		1272
		1273	my %done;
		1274	while (%todo) {
		1275	my $progress;
		1276
		1277	while (my ($k, $v) = each %todo) {
		1278	for (split /,\s*/, $v->{meta}{depends}) {
		1279	goto skip
		1280	unless exists $done{$_};
		1281	}
		1282
		1283	warn "... loading '$k' into '$v->{pkg}'\n";
		1284
		1285	unless (eval $v->{source}) {
		1286	my $msg = $@ ? "$v->{path}: $@\n"
		1287	: "$v->{base}: extension inactive.\n";
		1288
		1289	if (exists $v->{meta}{mandatory}) {
		1290	warn $msg;
		1291	warn "mandatory extension failed to load, exiting.\n";
		1292	exit 1;
		1293	}
		1294
		1295	warn $msg;
		1296	}
		1297
		1298	$done{$k} = delete $todo{$k};
		1299	push @EXTS, $v->{pkg};
		1300	$progress = 1;
		1301	}
		1302
		1303	skip:
		1304	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1305	unless $progress;
		1306	}
		1307	};
		1308	}
		1309
		1310	#############################################################################
		1311
		1312	=back
		1313
		1314	=head2 CORE EXTENSIONS
		1315
		1316	Functions and methods that extend core crossfire objects.
		1317
		1318	=cut
		1319
		1320	package cf::player;
		1321
		1322	use Coro::AIO;
		1323
		1324	=head3 cf::player
		1325
		1326	=over 4
		1327
		1328	=item cf::player::num_playing
		1329
		1330	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1331
		1332	=cut
		1333
		1334	sub num_playing {
		1335	scalar grep
		1336	$_->ob->map
		1337	&& !$_->hidden
		1338	&& !$_->ob->flag (cf::FLAG_WIZ),
		1339	cf::player::list
		1340	}
		1341
		1342	=item cf::player::find $login
		1343
		1344	Returns the given player object, loading it if necessary (might block).
		1345
		1346	=cut
		1347
		1348	sub playerdir($) {
		1349	"$PLAYERDIR/"
		1350	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1351	}
		1352
		1353	sub path($) {
		1354	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1355
		1356	(playerdir $login) . "/playerdata"
		1357	}
		1358
		1359	sub find_active($) {
		1360	$cf::PLAYER{$_[0]}
		1361	and $cf::PLAYER{$_[0]}->active
		1362	and $cf::PLAYER{$_[0]}
		1363	}
		1364
		1365	sub exists($) {
		1366	my ($login) = @_;
		1367
		1368	$cf::PLAYER{$login}
		1369	or cf::sync_job { !aio_stat path $login }
		1370	}
		1371
		1372	sub find($) {
		1373	return $cf::PLAYER{$_[0]} || do {
		1374	my $login = $_[0];
		1375
		1376	my $guard = cf::lock_acquire "user_find:$login";
		1377
		1378	$cf::PLAYER{$_[0]} || do {
		1379	# rename old playerfiles to new ones
		1380	#TODO: remove when no longer required
		1381	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1382	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1383	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1384	aio_unlink +(playerdir $login) . "/$login.pl";
		1385
		1386	my $f = new_from_file cf::object::thawer path $login
		1387	or return;
		1388
		1389	my $pl = cf::player::load_pl $f
		1390	or return;
		1391	local $cf::PLAYER_LOADING{$login} = $pl;
		1392	$f->resolve_delayed_derefs;
		1393	$cf::PLAYER{$login} = $pl
		1394	}
		1395	}
		1396	}
		1397
		1398	sub save($) {
		1399	my ($pl) = @_;
		1400
		1401	return if $pl->{deny_save};
		1402
		1403	my $path = path $pl;
		1404	my $guard = cf::lock_acquire "user_save:$path";
		1405
		1406	return if $pl->{deny_save};
		1407
		1408	aio_mkdir playerdir $pl, 0770;
		1409	$pl->{last_save} = $cf::RUNTIME;
		1410
		1411	$pl->save_pl ($path);
		1412	cf::cede_to_tick;
		1413	}
		1414
		1415	sub new($) {
		1416	my ($login) = @_;
		1417
		1418	my $self = create;
		1419
		1420	$self->ob->name ($login);
		1421	$self->{deny_save} = 1;
		1422
		1423	$cf::PLAYER{$login} = $self;
		1424
		1425	$self
		1426	}
		1427
		1428	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1429
		1430	=cut
		1431
		1432	sub send_msg {
		1433	my $ns = shift->ns
		1434	or return;
		1435	$ns->send_msg (@_);
		1436	}
		1437
		1438	=item $pl->quit_character
		1439
		1440	Nukes the player without looking back. If logged in, the connection will
		1441	be destroyed. May block for a long time.
		1442
		1443	=cut
		1444
		1445	sub quit_character {
		1446	my ($pl) = @_;
		1447
		1448	my $name = $pl->ob->name;
		1449
		1450	$pl->{deny_save} = 1;
		1451	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1452
		1453	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1454	$pl->deactivate;
		1455	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1456	$pl->ns->destroy if $pl->ns;
		1457
		1458	my $path = playerdir $pl;
		1459	my $temp = "$path~$cf::RUNTIME~deleting~";
		1460	aio_rename $path, $temp;
		1461	delete $cf::PLAYER{$pl->ob->name};
		1462	$pl->destroy;
		1463
		1464	my $prefix = qr<^~\Q$name\E/>;
		1465
		1466	# nuke player maps
		1467	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1468
		1469	IO::AIO::aio_rmtree $temp;
		1470	}
		1471
		1472	=item $pl->kick
		1473
		1474	Kicks a player out of the game. This destroys the connection.
		1475
		1476	=cut
		1477
		1478	sub kick {
		1479	my ($pl, $kicker) = @_;
		1480
		1481	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1482	$pl->killer ("kicked");
		1483	$pl->ns->destroy;
		1484	}
		1485
		1486	=item cf::player::list_logins
		1487
		1488	Returns am arrayref of all valid playernames in the system, can take a
		1489	while and may block, so not sync_job-capable, ever.
		1490
		1491	=cut
		1492
		1493	sub list_logins {
		1494	my $dirs = aio_readdir $PLAYERDIR
		1495	or return [];
		1496
		1497	my @logins;
		1498
		1499	for my $login (@$dirs) {
		1500	my $path = path $login;
		1501
		1502	# a .pst is a dead give-away for a valid player
		1503	unless (-e "$path.pst") {
		1504	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1505	aio_read $fh, 0, 512, my $buf, 0 or next;
		1506	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1507	}
		1508
		1509	utf8::decode $login;
		1510	push @logins, $login;
		1511	}
		1512
		1513	\@logins
		1514	}
		1515
		1516	=item $player->maps
		1517
		1518	Returns an arrayref of map paths that are private for this
		1519	player. May block.
		1520
		1521	=cut
		1522
		1523	sub maps($) {
		1524	my ($pl) = @_;
		1525
		1526	$pl = ref $pl ? $pl->ob->name : $pl;
		1527
		1528	my $files = aio_readdir playerdir $pl
		1529	or return;
		1530
		1531	my @paths;
		1532
		1533	for (@$files) {
		1534	utf8::decode $_;
		1535	next if /\.(?:pl|pst)$/;
		1536	next unless /^$PATH_SEP/o;
		1537
		1538	push @paths, cf::map::normalise "~$pl/$_";
		1539	}
		1540
		1541	\@paths
		1542	}
		1543
		1544	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1545
		1546	Expand crossfire pod fragments into protocol xml.
		1547
		1548	=cut
		1549
		1550	sub expand_cfpod {
		1551	((my $self), (local $_)) = @_;
		1552
		1553	# escape & and <
		1554	s/&/&amp;/g;
		1555	s/(?<![BIUGHT])</&lt;/g;
		1556
		1557	# this is buggy, it needs to properly take care of nested <'s
		1558
		1559	1 while
		1560	# replace B<>, I<>, U<> etc.
		1561	s/B<([^\>]*)>/<b>$1<\/b>/
		1562	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1563	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1564	|| s/T<([^\>]*)>/<big><b>$1<\/b><\/big>/
		1565	# replace G<male|female> tags
		1566	|| s{G<([^>|]*)\|([^>]*)>}{
		1567	$self->gender ? $2 : $1
		1568	}ge
		1569	# replace H<hint text>
		1570	|| s{H<([^\>]*)>}
		1571	{
		1572	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1573	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1574	"")
		1575	[$self->{hintmode}]
		1576	}ge;
		1577
		1578	# create single paragraphs (very hackish)
		1579	s/(?<=\S)\n(?=\w)/ /g;
		1580
		1581	# compress some whitespace
		1582	s/\s+\n/\n/g; # ws line-ends
		1583	s/\n\n+/\n/g; # double lines
		1584	s/^\n+//; # beginning lines
		1585	s/\n+$//; # ending lines
		1586
		1587	$_
		1588	}
		1589
		1590	sub hintmode {
		1591	$_[0]{hintmode} = $_[1] if @_ > 1;
		1592	$_[0]{hintmode}
		1593	}
		1594
		1595	=item $player->ext_reply ($msgid, @msg)
		1596
		1597	Sends an ext reply to the player.
		1598
		1599	=cut
		1600
		1601	sub ext_reply($$@) {
		1602	my ($self, $id, @msg) = @_;
		1603
		1604	$self->ns->ext_reply ($id, @msg)
		1605	}
		1606
		1607	=item $player->ext_msg ($type, @msg)
		1608
		1609	Sends an ext event to the client.
		1610
		1611	=cut
		1612
		1613	sub ext_msg($$@) {
		1614	my ($self, $type, @msg) = @_;
		1615
		1616	$self->ns->ext_msg ($type, @msg);
		1617	}
		1618
		1619	=head3 cf::region
		1620
		1621	=over 4
		1622
		1623	=cut
		1624
		1625	package cf::region;
		1626
		1627	=item cf::region::find_by_path $path
		1628
		1629	Tries to decuce the likely region for a map knowing only its path.
		1630
		1631	=cut
		1632
		1633	sub find_by_path($) {
984	my ($path) = @_;	1634	my ($path) = @_;
985		1635
986	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1636	my ($match, $specificity);
987	my $base = $1;
988	my $pkg = $1;
989	$pkg =~ s/[^[:word:]]/_/g;
990	$pkg = "ext::$pkg";
991		1637
992	warn "loading '$path' into '$pkg'\n";	1638	for my $region (list) {
993		1639	if ($region->{match} && $path =~ $region->{match}) {
994	open my $fh, "<:utf8", $path	1640	($match, $specificity) = ($region, $region->specificity)
995	or die "$path: $!";	1641	if $region->specificity > $specificity;
996		1642	}
997	my $source =
998	"package $pkg; use strict; use utf8;\n"
999	. "#line 1 \"$path\"\n{\n"
1000	. (do { local $/; <$fh> })
1001	. "\n};\n1";
1002
1003	eval $source
1004	or die $@ ? "$path: $@\n"
1005	: "extension disabled.\n";
1006
1007	push @exts, $pkg;
1008	$ext_pkg{$base} = $pkg;
1009
1010	# no strict 'refs';
1011	# @{"$pkg\::ISA"} = ext::;
1012
1013	register $base, $pkg;
1014	}
1015
1016	sub unload_extension {
1017	my ($pkg) = @_;
1018
1019	warn "removing extension $pkg\n";
1020
1021	# remove hooks
1022	#TODO
1023	# for my $idx (0 .. $#PLUGIN_EVENT) {
1024	# delete $hook[$idx]{$pkg};
1025	# }	1643	}
1026		1644
1027	# remove commands	1645	$match
1028	for my $name (keys %COMMAND) {
1029	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
1030
1031	if (@cb) {
1032	$COMMAND{$name} = \@cb;
1033	} else {
1034	delete $COMMAND{$name};
1035	}
1036	}
1037
1038	# remove extcmds
1039	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
1040	delete $EXTCMD{$name};
1041	}
1042
1043	if (my $cb = $pkg->can ("unload")) {
1044	eval {
1045	$cb->($pkg);
1046	1
1047	} or warn "$pkg unloaded, but with errors: $@";
1048	}
1049
1050	Symbol::delete_package $pkg;
1051	}
1052
1053	sub load_extensions {
1054	for my $ext (<$LIBDIR/*.ext>) {
1055	next unless -r $ext;
1056	eval {
1057	load_extension $ext;
1058	1
1059	} or warn "$ext not loaded: $@";
1060	}
1061	}
1062
1063	#############################################################################
1064	# load/save/clean perl data associated with a map
1065
1066	*cf::mapsupport::on_clean = sub {
1067	my ($map) = @_;
1068
1069	my $path = $map->tmpname;
1070	defined $path or return;
1071
1072	unlink "$path.pst";
1073	};
1074
1075	cf::map->attach (prio => -10000, package => cf::mapsupport::);
1076
1077	#############################################################################
1078	# load/save perl data associated with player->ob objects
1079
1080	sub all_objects(@) {
1081	@_, map all_objects ($_->inv), @_
1082	}
1083
1084	# TODO: compatibility cruft, remove when no longer needed
1085	cf::player->attach (
1086	on_load => sub {
1087	my ($pl, $path) = @_;
1088
1089	for my $o (all_objects $pl->ob) {
1090	if (my $value = $o->get_ob_key_value ("_perl_data")) {
1091	$o->set_ob_key_value ("_perl_data");
1092
1093	%$o = %{ Storable::thaw pack "H*", $value };
1094	}
1095	}
1096	},
1097	);
1098
1099	#############################################################################
1100
1101	=head2 CORE EXTENSIONS
1102
1103	Functions and methods that extend core crossfire objects.
1104
1105	=head3 cf::player
1106
1107	=over 4
1108
1109	=item cf::player::exists $login
1110
1111	Returns true when the given account exists.
1112
1113	=cut
1114
1115	sub cf::player::exists($) {
1116	cf::player::find $_[0]
1117	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
1118	}
1119
1120	=item $player->ext_reply ($msgid, $msgtype, %msg)
1121
1122	Sends an ext reply to the player.
1123
1124	=cut
1125
1126	sub cf::player::ext_reply($$$%) {
1127	my ($self, $id, %msg) = @_;
1128
1129	$msg{msgid} = $id;
1130
1131	$self->send ("ext " . to_json \%msg);
1132	}	1646	}
1133		1647
1134	=back	1648	=back
1135
1136		1649
1137	=head3 cf::map	1650	=head3 cf::map
1138		1651
1139	=over 4	1652	=over 4
1140		1653
…		…
1143	package cf::map;	1656	package cf::map;
1144		1657
1145	use Fcntl;	1658	use Fcntl;
1146	use Coro::AIO;	1659	use Coro::AIO;
1147		1660
		1661	use overload
		1662	'""' => \&as_string,
		1663	fallback => 1;
		1664
1148	our $MAX_RESET = 3600;	1665	our $MAX_RESET = 3600;
1149	our $DEFAULT_RESET = 3000;	1666	our $DEFAULT_RESET = 3000;
1150		1667
1151	sub generate_random_map {	1668	sub generate_random_map {
1152	my ($path, $rmp) = @_;	1669	my ($self, $rmp) = @_;
1153
1154	# mit "rum" bekleckern, nicht	1670	# mit "rum" bekleckern, nicht
1155	cf::map::_create_random_map	1671	$self->_create_random_map (
1156	$path,
1157	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},	1672	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1158	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},	1673	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1159	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},	1674	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1160	$rmp->{exit_on_final_map},	1675	$rmp->{exit_on_final_map},
1161	$rmp->{xsize}, $rmp->{ysize},	1676	$rmp->{xsize}, $rmp->{ysize},
1162	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},	1677	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1163	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},	1678	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1164	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},	1679	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1165	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},	1680	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1166	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},	1681	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1167	(cf::region::find $rmp->{region})	1682	(cf::region::find $rmp->{region}), $rmp->{custom}
		1683	)
		1684	}
		1685
		1686	=item cf::map->register ($regex, $prio)
		1687
		1688	Register a handler for the map path matching the given regex at the
		1689	givne priority (higher is better, built-in handlers have priority 0, the
		1690	default).
		1691
		1692	=cut
		1693
		1694	sub register {
		1695	my (undef, $regex, $prio) = @_;
		1696	my $pkg = caller;
		1697
		1698	no strict;
		1699	push @{"$pkg\::ISA"}, __PACKAGE__;
		1700
		1701	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1702	}
		1703
		1704	# also paths starting with '/'
		1705	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1706
		1707	sub thawer_merge {
		1708	my ($self, $merge) = @_;
		1709
		1710	# we have to keep some variables in memory intact
		1711	local $self->{path};
		1712	local $self->{load_path};
		1713
		1714	$self->SUPER::thawer_merge ($merge);
		1715	}
		1716
		1717	sub normalise {
		1718	my ($path, $base) = @_;
		1719
		1720	$path = "$path"; # make sure its a string
		1721
		1722	$path =~ s/\.map$//;
		1723
		1724	# map plan:
		1725	#
		1726	# /! non-realised random map exit (special hack!)
		1727	# {... are special paths that are not being touched
		1728	# ?xxx/... are special absolute paths
		1729	# ?random/... random maps
		1730	# /... normal maps
		1731	# ~user/... per-player map of a specific user
		1732
		1733	$path =~ s/$PATH_SEP/\//go;
		1734
		1735	# treat it as relative path if it starts with
		1736	# something that looks reasonable
		1737	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1738	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1739
		1740	$base =~ s{[^/]+/?$}{};
		1741	$path = "$base/$path";
		1742	}
		1743
		1744	for ($path) {
		1745	redo if s{//}{/};
		1746	redo if s{/\.?/}{/};
		1747	redo if s{/[^/]+/\.\./}{/};
		1748	}
		1749
		1750	$path
		1751	}
		1752
		1753	sub new_from_path {
		1754	my (undef, $path, $base) = @_;
		1755
		1756	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1757
		1758	$path = normalise $path, $base;
		1759
		1760	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1761	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1762	my $self = bless cf::map::new, $pkg;
		1763	$self->{path} = $path; $self->path ($path);
		1764	$self->init; # pass $1 etc.
		1765	return $self;
		1766	}
		1767	}
		1768
		1769	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1770	()
		1771	}
		1772
		1773	sub init {
		1774	my ($self) = @_;
		1775
		1776	$self
		1777	}
		1778
		1779	sub as_string {
		1780	my ($self) = @_;
		1781
		1782	"$self->{path}"
		1783	}
		1784
		1785	# the displayed name, this is a one way mapping
		1786	sub visible_name {
		1787	&as_string
		1788	}
		1789
		1790	# the original (read-only) location
		1791	sub load_path {
		1792	my ($self) = @_;
		1793
		1794	"$MAPDIR/$self->{path}.map"
		1795	}
		1796
		1797	# the temporary/swap location
		1798	sub save_path {
		1799	my ($self) = @_;
		1800
		1801	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1802	"$TMPDIR/$path.map"
		1803	}
		1804
		1805	# the unique path, undef == no special unique path
		1806	sub uniq_path {
		1807	my ($self) = @_;
		1808
		1809	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1810	"$UNIQUEDIR/$path"
1168	}	1811	}
1169		1812
1170	# and all this just because we cannot iterate over	1813	# and all this just because we cannot iterate over
1171	# all maps in C++...	1814	# all maps in C++...
1172	sub change_all_map_light {	1815	sub change_all_map_light {
…		…
1174		1817
1175	$_->change_map_light ($change)	1818	$_->change_map_light ($change)
1176	for grep $_->outdoor, values %cf::MAP;	1819	for grep $_->outdoor, values %cf::MAP;
1177	}	1820	}
1178		1821
		1822	sub decay_objects {
		1823	my ($self) = @_;
		1824
		1825	return if $self->{deny_reset};
		1826
		1827	$self->do_decay_objects;
		1828	}
		1829
		1830	sub unlink_save {
		1831	my ($self) = @_;
		1832
		1833	utf8::encode (my $save = $self->save_path);
		1834	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1835	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1836	}
		1837
1179	sub try_load_header($) {	1838	sub load_header_from($) {
1180	my ($path) = @_;	1839	my ($self, $path) = @_;
1181		1840
1182	utf8::encode $path;	1841	utf8::encode $path;
1183	aio_open $path, O_RDONLY, 0	1842	my $f = new_from_file cf::object::thawer $path
1184	or return;	1843	or return;
1185		1844
1186	my $map = cf::map::new	1845	$self->_load_header ($f)
1187	or return;	1846	or return;
1188		1847
1189	$map->load_header ($path)	1848	local $MAP_LOADING{$self->{path}} = $self;
		1849	$f->resolve_delayed_derefs;
		1850
		1851	$self->{load_path} = $path;
		1852
		1853	1
		1854	}
		1855
		1856	sub load_header_orig {
		1857	my ($self) = @_;
		1858
		1859	$self->load_header_from ($self->load_path)
		1860	}
		1861
		1862	sub load_header_temp {
		1863	my ($self) = @_;
		1864
		1865	$self->load_header_from ($self->save_path)
		1866	}
		1867
		1868	sub prepare_temp {
		1869	my ($self) = @_;
		1870
		1871	$self->last_access ((delete $self->{last_access})
		1872	|| $cf::RUNTIME); #d#
		1873	# safety
		1874	$self->{instantiate_time} = $cf::RUNTIME
		1875	if $self->{instantiate_time} > $cf::RUNTIME;
		1876	}
		1877
		1878	sub prepare_orig {
		1879	my ($self) = @_;
		1880
		1881	$self->{load_original} = 1;
		1882	$self->{instantiate_time} = $cf::RUNTIME;
		1883	$self->last_access ($cf::RUNTIME);
		1884	$self->instantiate;
		1885	}
		1886
		1887	sub load_header {
		1888	my ($self) = @_;
		1889
		1890	if ($self->load_header_temp) {
		1891	$self->prepare_temp;
		1892	} else {
		1893	$self->load_header_orig
1190	or return;	1894	or return;
		1895	$self->prepare_orig;
		1896	}
1191		1897
1192	$map->{load_path} = $path;	1898	$self->{deny_reset} = 1
		1899	if $self->no_reset;
1193		1900
1194	$map	1901	$self->default_region (cf::region::find_by_path $self->{path})
		1902	unless $self->default_region;
		1903
		1904	1
1195	}	1905	}
1196		1906
1197	sub find;	1907	sub find;
1198	sub find {	1908	sub find {
1199	my ($path, $origin) = @_;	1909	my ($path, $origin) = @_;
1200		1910
1201	#warn "find<$path,$origin>\n";#d#
1202
1203	$path = new cf::path $path, $origin && $origin->path;	1911	$path = normalise $path, $origin && $origin->path;
1204	my $key = $path->as_string;
1205		1912
		1913	cf::lock_wait "map_data:$path";#d#remove
1206	cf::lock_wait "map_find:$key";	1914	cf::lock_wait "map_find:$path";
1207		1915
1208	$cf::MAP{$key} || do {	1916	$cf::MAP{$path} || do {
1209	my $guard = cf::lock_acquire "map_find:$key";	1917	my $guard1 = cf::lock_acquire "map_find:$path";
		1918	my $guard2 = cf::lock_acquire "map_data:$path"; # just for the fun of it
1210		1919
1211	# do it the slow way	1920	my $map = new_from_path cf::map $path
1212	my $map = try_load_header $path->save_path;
1213
1214	if ($map) {
1215	$map->last_access ((delete $map->{last_access})
1216	|| $cf::RUNTIME); #d#
1217	# safety
1218	$map->{instantiate_time} = $cf::RUNTIME
1219	if $map->{instantiate_time} > $cf::RUNTIME;
1220	} else {
1221	if (my $rmp = $path->random_map_params) {
1222	$map = generate_random_map $key, $rmp;
1223	} else {
1224	$map = try_load_header $path->load_path;
1225	}
1226
1227	$map or return;	1921	or return;
1228		1922
1229	$map->{load_original} = 1;
1230	$map->{instantiate_time} = $cf::RUNTIME;
1231	$map->last_access ($cf::RUNTIME);
1232	$map->instantiate;
1233
1234	# per-player maps become, after loading, normal maps
1235	$map->per_player (0) if $path->{user_rel};
1236	}
1237
1238	$map->path ($key);
1239	$map->{path} = $path;
1240	$map->{last_save} = $cf::RUNTIME;	1923	$map->{last_save} = $cf::RUNTIME;
1241		1924
1242	if ($map->should_reset) {	1925	$map->load_header
		1926	or return;
		1927
		1928	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1929	# doing this can freeze the server in a sync job, obviously
		1930	#$cf::WAIT_FOR_TICK->wait;
		1931	undef $guard1;
		1932	undef $guard2;
1243	$map->reset;	1933	$map->reset;
1244	undef $guard;
1245	$map = find $path	1934	return find $path;
1246	or return;
1247	}	1935	}
1248		1936
1249	$cf::MAP{$key} = $map	1937	$cf::MAP{$path} = $map
1250	}	1938	}
1251	}	1939	}
		1940
		1941	sub pre_load { }
		1942	sub post_load { }
1252		1943
1253	sub load {	1944	sub load {
1254	my ($self) = @_;	1945	my ($self) = @_;
1255		1946
		1947	local $self->{deny_reset} = 1; # loading can take a long time
		1948
1256	my $path = $self->{path};	1949	my $path = $self->{path};
		1950
		1951	{
1257	my $guard = cf::lock_acquire "map_load:" . $path->as_string;	1952	my $guard = cf::lock_acquire "map_data:$path";
1258		1953
		1954	return unless $self->valid;
1259	return if $self->in_memory != cf::MAP_SWAPPED;	1955	return unless $self->in_memory == cf::MAP_SWAPPED;
1260		1956
1261	$self->in_memory (cf::MAP_LOADING);	1957	$self->in_memory (cf::MAP_LOADING);
1262		1958
1263	$self->alloc;	1959	$self->alloc;
1264	$self->load_objects ($self->{load_path}, 1)	1960
		1961	$self->pre_load;
		1962	cf::cede_to_tick;
		1963
		1964	my $f = new_from_file cf::object::thawer $self->{load_path};
		1965	$f->skip_block;
		1966	$self->_load_objects ($f)
1265	or return;	1967	or return;
1266		1968
1267	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)	1969	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1268	if delete $self->{load_original};	1970	if delete $self->{load_original};
1269		1971
1270	if (my $uniq = $path->uniq_path) {	1972	if (my $uniq = $self->uniq_path) {
1271	utf8::encode $uniq;	1973	utf8::encode $uniq;
1272	if (aio_open $uniq, O_RDONLY, 0) {	1974	unless (aio_stat $uniq) {
		1975	if (my $f = new_from_file cf::object::thawer $uniq) {
1273	$self->clear_unique_items;	1976	$self->clear_unique_items;
1274	$self->load_objects ($uniq, 0);	1977	$self->_load_objects ($f);
		1978	$f->resolve_delayed_derefs;
		1979	}
1275	}	1980	}
1276	}	1981	}
1277		1982
		1983	$f->resolve_delayed_derefs;
		1984
		1985	cf::cede_to_tick;
1278	# now do the right thing for maps	1986	# now do the right thing for maps
1279	$self->link_multipart_objects;	1987	$self->link_multipart_objects;
1280
1281	if ($self->{path}->is_style_map) {
1282	$self->{deny_save} = 1;
1283	$self->{deny_reset} = 1;
1284	} else {
1285	$self->fix_auto_apply;
1286	$self->decay_objects;
1287	$self->update_buttons;
1288	$self->set_darkness_map;
1289	$self->difficulty ($self->estimate_difficulty)	1988	$self->difficulty ($self->estimate_difficulty)
1290	unless $self->difficulty;	1989	unless $self->difficulty;
		1990	cf::cede_to_tick;
		1991
		1992	unless ($self->{deny_activate}) {
		1993	$self->decay_objects;
		1994	$self->fix_auto_apply;
		1995	$self->update_buttons;
		1996	cf::cede_to_tick;
		1997	$self->set_darkness_map;
		1998	cf::cede_to_tick;
1291	$self->activate;	1999	$self->activate;
1292	}	2000	}
1293		2001
		2002	$self->{last_save} = $cf::RUNTIME;
		2003	$self->last_access ($cf::RUNTIME);
		2004
1294	$self->in_memory (cf::MAP_IN_MEMORY);	2005	$self->in_memory (cf::MAP_IN_MEMORY);
		2006	}
		2007
		2008	$self->post_load;
		2009	}
		2010
		2011	sub customise_for {
		2012	my ($self, $ob) = @_;
		2013
		2014	return find "~" . $ob->name . "/" . $self->{path}
		2015	if $self->per_player;
		2016
		2017	# return find "?party/" . $ob->name . "/" . $self->{path}
		2018	# if $self->per_party;
		2019
		2020	$self
		2021	}
		2022
		2023	# find and load all maps in the 3x3 area around a map
		2024	sub load_neighbours {
		2025	my ($map) = @_;
		2026
		2027	my @neigh; # diagonal neighbours
		2028
		2029	for (0 .. 3) {
		2030	my $neigh = $map->tile_path ($_)
		2031	or next;
		2032	$neigh = find $neigh, $map
		2033	or next;
		2034	$neigh->load;
		2035
		2036	push @neigh,
		2037	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2038	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2039	}
		2040
		2041	for (grep defined $_->[0], @neigh) {
		2042	my ($path, $origin) = @$_;
		2043	my $neigh = find $path, $origin
		2044	or next;
		2045	$neigh->load;
		2046	}
1295	}	2047	}
1296		2048
1297	sub find_sync {	2049	sub find_sync {
1298	my ($path, $origin) = @_;	2050	my ($path, $origin) = @_;
1299		2051
1300	cf::sync_job { cf::map::find $path, $origin }	2052	cf::sync_job { find $path, $origin }
1301	}	2053	}
1302		2054
1303	sub do_load_sync {	2055	sub do_load_sync {
1304	my ($map) = @_;	2056	my ($map) = @_;
1305		2057
		2058	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2059	if $Coro::current == $Coro::main;
		2060
1306	cf::sync_job { $map->load };	2061	cf::sync_job { $map->load };
		2062	}
		2063
		2064	our %MAP_PREFETCH;
		2065	our $MAP_PREFETCHER = undef;
		2066
		2067	sub find_async {
		2068	my ($path, $origin, $load) = @_;
		2069
		2070	$path = normalise $path, $origin && $origin->{path};
		2071
		2072	if (my $map = $cf::MAP{$path}) {
		2073	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		2074	}
		2075
		2076	$MAP_PREFETCH{$path} |= $load;
		2077
		2078	$MAP_PREFETCHER ||= cf::async {
		2079	$Coro::current->{desc} = "map prefetcher";
		2080
		2081	while (%MAP_PREFETCH) {
		2082	while (my ($k, $v) = each %MAP_PREFETCH) {
		2083	if (my $map = find $k) {
		2084	$map->load if $v;
		2085	}
		2086
		2087	delete $MAP_PREFETCH{$k};
		2088	}
		2089	}
		2090	undef $MAP_PREFETCHER;
		2091	};
		2092	$MAP_PREFETCHER->prio (6);
		2093
		2094	()
1307	}	2095	}
1308		2096
1309	sub save {	2097	sub save {
1310	my ($self) = @_;	2098	my ($self) = @_;
1311		2099
		2100	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2101
1312	$self->{last_save} = $cf::RUNTIME;	2102	$self->{last_save} = $cf::RUNTIME;
1313		2103
1314	return unless $self->dirty;	2104	return unless $self->dirty;
1315		2105
1316	my $save = $self->{path}->save_path; utf8::encode $save;	2106	my $save = $self->save_path; utf8::encode $save;
1317	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;	2107	my $uniq = $self->uniq_path; utf8::encode $uniq;
1318		2108
1319	$self->{load_path} = $save;	2109	$self->{load_path} = $save;
1320		2110
1321	return if $self->{deny_save};	2111	return if $self->{deny_save};
1322		2112
1323	local $self->{last_access} = $self->last_access;#d#	2113	local $self->{last_access} = $self->last_access;#d#
1324		2114
		2115	cf::async {
		2116	$Coro::current->{desc} = "map player save";
		2117	$_->contr->save for $self->players;
		2118	};
		2119
1325	if ($uniq) {	2120	if ($uniq) {
1326	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);	2121	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1327	$self->save_objects ($uniq, cf::IO_UNIQUES);	2122	$self->_save_objects ($uniq, cf::IO_UNIQUES);
1328	} else {	2123	} else {
1329	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);	2124	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1330	}	2125	}
1331	}	2126	}
1332		2127
1333	sub swap_out {	2128	sub swap_out {
1334	my ($self) = @_;	2129	my ($self) = @_;
1335		2130
1336	# save first because save cedes	2131	# save first because save cedes
1337	$self->save;	2132	$self->save;
		2133
		2134	my $lock = cf::lock_acquire "map_data:$self->{path}";
1338		2135
1339	return if $self->players;	2136	return if $self->players;
1340	return if $self->in_memory != cf::MAP_IN_MEMORY;	2137	return if $self->in_memory != cf::MAP_IN_MEMORY;
1341	return if $self->{deny_save};	2138	return if $self->{deny_save};
1342		2139
		2140	$self->in_memory (cf::MAP_SWAPPED);
		2141
		2142	$self->deactivate;
		2143	$_->clear_links_to ($self) for values %cf::MAP;
1343	$self->clear;	2144	$self->clear;
1344	$self->in_memory (cf::MAP_SWAPPED);
1345	}	2145	}
1346		2146
1347	sub reset_at {	2147	sub reset_at {
1348	my ($self) = @_;	2148	my ($self) = @_;
1349		2149
1350	# TODO: safety, remove and allow resettable per-player maps	2150	# TODO: safety, remove and allow resettable per-player maps
1351	return 1e99 if $self->{path}{user_rel};
1352	return 1e99 if $self->{deny_reset};	2151	return 1e99 if $self->{deny_reset};
1353		2152
1354	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	2153	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1355	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	2154	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1356		2155
…		…
1361	my ($self) = @_;	2160	my ($self) = @_;
1362		2161
1363	$self->reset_at <= $cf::RUNTIME	2162	$self->reset_at <= $cf::RUNTIME
1364	}	2163	}
1365		2164
1366	sub unlink_save {
1367	my ($self) = @_;
1368
1369	utf8::encode (my $save = $self->{path}->save_path);
1370	aioreq_pri 3; IO::AIO::aio_unlink $save;
1371	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
1372	}
1373
1374	sub rename {
1375	my ($self, $new_path) = @_;
1376
1377	$self->unlink_save;
1378
1379	delete $cf::MAP{$self->path};
1380	$self->{path} = new cf::path $new_path;
1381	$self->path ($self->{path}->as_string);
1382	$cf::MAP{$self->path} = $self;
1383
1384	$self->save;
1385	}
1386
1387	sub reset {	2165	sub reset {
1388	my ($self) = @_;	2166	my ($self) = @_;
1389		2167
		2168	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2169
1390	return if $self->players;	2170	return if $self->players;
1391	return if $self->{path}{user_rel};#d#
1392		2171
1393	warn "resetting map ", $self->path;#d#	2172	warn "resetting map ", $self->path;
		2173
		2174	$self->in_memory (cf::MAP_SWAPPED);
		2175
		2176	# need to save uniques path
		2177	unless ($self->{deny_save}) {
		2178	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2179
		2180	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2181	if $uniq;
		2182	}
1394		2183
1395	delete $cf::MAP{$self->path};	2184	delete $cf::MAP{$self->path};
1396		2185
		2186	$self->deactivate;
1397	$_->clear_links_to ($self) for values %cf::MAP;	2187	$_->clear_links_to ($self) for values %cf::MAP;
		2188	$self->clear;
1398		2189
1399	$self->unlink_save;	2190	$self->unlink_save;
1400	$self->destroy;	2191	$self->destroy;
1401	}	2192	}
1402		2193
1403	my $nuke_counter = "aaaa";	2194	my $nuke_counter = "aaaa";
1404		2195
1405	sub nuke {	2196	sub nuke {
1406	my ($self) = @_;	2197	my ($self) = @_;
1407		2198
		2199	{
		2200	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2201
		2202	delete $cf::MAP{$self->path};
		2203
		2204	$self->unlink_save;
		2205
		2206	bless $self, "cf::map";
		2207	delete $self->{deny_reset};
1408	$self->{deny_save} = 1;	2208	$self->{deny_save} = 1;
1409	$self->reset_timeout (1);	2209	$self->reset_timeout (1);
1410	$self->rename ("{nuke}/" . ($nuke_counter++));	2210	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2211
		2212	$cf::MAP{$self->path} = $self;
		2213	}
		2214
1411	$self->reset; # polite request, might not happen	2215	$self->reset; # polite request, might not happen
1412	}	2216	}
1413		2217
1414	sub customise_for {	2218	=item $maps = cf::map::tmp_maps
1415	my ($map, $ob) = @_;
1416		2219
1417	if ($map->per_player) {	2220	Returns an arrayref with all map paths of currently instantiated and saved
1418	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};	2221	maps. May block.
		2222
		2223	=cut
		2224
		2225	sub tmp_maps() {
1419	}	2226	[
1420		2227	map {
1421	$map	2228	utf8::decode $_;
		2229	/\.map$/
		2230	? normalise $_
		2231	: ()
		2232	} @{ aio_readdir $TMPDIR or [] }
		2233	]
1422	}	2234	}
1423		2235
1424	sub emergency_save {	2236	=item $maps = cf::map::random_maps
1425	my $freeze_guard = cf::freeze_mainloop;
1426		2237
1427	warn "enter emergency map save\n";	2238	Returns an arrayref with all map paths of currently instantiated and saved
		2239	random maps. May block.
1428		2240
1429	cf::sync_job {	2241	=cut
1430	warn "begin emergency map save\n";
1431	$_->save for values %cf::MAP;
1432	};
1433		2242
1434	warn "end emergency map save\n";	2243	sub random_maps() {
		2244	[
		2245	map {
		2246	utf8::decode $_;
		2247	/\.map$/
		2248	? normalise "?random/$_"
		2249	: ()
		2250	} @{ aio_readdir $RANDOMDIR or [] }
		2251	]
		2252	}
		2253
		2254	=item cf::map::unique_maps
		2255
		2256	Returns an arrayref of paths of all shared maps that have
		2257	instantiated unique items. May block.
		2258
		2259	=cut
		2260
		2261	sub unique_maps() {
		2262	[
		2263	map {
		2264	utf8::decode $_;
		2265	/\.map$/
		2266	? normalise $_
		2267	: ()
		2268	} @{ aio_readdir $UNIQUEDIR or [] }
		2269	]
1435	}	2270	}
1436		2271
1437	package cf;	2272	package cf;
1438		2273
1439	=back	2274	=back
1440		2275
		2276	=head3 cf::object
		2277
		2278	=cut
		2279
		2280	package cf::object;
		2281
		2282	=over 4
		2283
		2284	=item $ob->inv_recursive
		2285
		2286	Returns the inventory of the object _and_ their inventories, recursively.
		2287
		2288	=cut
		2289
		2290	sub inv_recursive_;
		2291	sub inv_recursive_ {
		2292	map { $_, inv_recursive_ $_->inv } @_
		2293	}
		2294
		2295	sub inv_recursive {
		2296	inv_recursive_ inv $_[0]
		2297	}
		2298
		2299	=item $ref = $ob->ref
		2300
		2301	creates and returns a persistent reference to an objetc that can be stored as a string.
		2302
		2303	=item $ob = cf::object::deref ($refstring)
		2304
		2305	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2306	even if the object actually exists. May block.
		2307
		2308	=cut
		2309
		2310	sub deref {
		2311	my ($ref) = @_;
		2312
		2313	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2314	my ($uuid, $name) = ($1, $2);
		2315	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2316	or return;
		2317	$pl->ob->uuid eq $uuid
		2318	or return;
		2319
		2320	$pl->ob
		2321	} else {
		2322	warn "$ref: cannot resolve object reference\n";
		2323	undef
		2324	}
		2325	}
		2326
		2327	package cf;
		2328
		2329	=back
1441		2330
1442	=head3 cf::object::player	2331	=head3 cf::object::player
1443		2332
1444	=over 4	2333	=over 4
1445		2334
…		…
1459		2348
1460	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2349	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1461		2350
1462	if ($self->{record_replies}) {	2351	if ($self->{record_replies}) {
1463	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2352	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2353
1464	} else {	2354	} else {
		2355	my $pl = $self->contr;
		2356
		2357	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2358	my $dialog = $pl->{npc_dialog};
		2359	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2360
		2361	} else {
1465	$msg = $npc->name . " says: $msg" if $npc;	2362	$msg = $npc->name . " says: $msg" if $npc;
1466	$self->message ($msg, $flags);	2363	$self->message ($msg, $flags);
		2364	}
1467	}	2365	}
		2366	}
		2367
		2368	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2369
		2370	=cut
		2371
		2372	sub cf::object::send_msg {
		2373	my $pl = shift->contr
		2374	or return;
		2375	$pl->send_msg (@_);
1468	}	2376	}
1469		2377
1470	=item $player_object->may ("access")	2378	=item $player_object->may ("access")
1471		2379
1472	Returns wether the given player is authorized to access resource "access"	2380	Returns wether the given player is authorized to access resource "access"
…		…
1485		2393
1486	=item $player_object->enter_link	2394	=item $player_object->enter_link
1487		2395
1488	Freezes the player and moves him/her to a special map (C<{link}>).	2396	Freezes the player and moves him/her to a special map (C<{link}>).
1489		2397
1490	The player should be reaosnably safe there for short amounts of time. You	2398	The player should be reasonably safe there for short amounts of time. You
1491	I<MUST> call C<leave_link> as soon as possible, though.	2399	I<MUST> call C<leave_link> as soon as possible, though.
1492		2400
		2401	Will never block.
		2402
1493	=item $player_object->leave_link ($map, $x, $y)	2403	=item $player_object->leave_link ($map, $x, $y)
1494		2404
1495	Moves the player out of the specila link map onto the given map. If the	2405	Moves the player out of the special C<{link}> map onto the specified
1496	map is not valid (or omitted), the player will be moved back to the	2406	map. If the map is not valid (or omitted), the player will be moved back
1497	location he/she was before the call to C<enter_link>, or, if that fails,	2407	to the location he/she was before the call to C<enter_link>, or, if that
1498	to the emergency map position.	2408	fails, to the emergency map position.
1499		2409
1500	Might block.	2410	Might block.
1501		2411
1502	=cut	2412	=cut
		2413
		2414	sub link_map {
		2415	unless ($LINK_MAP) {
		2416	$LINK_MAP = cf::map::find "{link}"
		2417	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2418	$LINK_MAP->load;
		2419	}
		2420
		2421	$LINK_MAP
		2422	}
1503		2423
1504	sub cf::object::player::enter_link {	2424	sub cf::object::player::enter_link {
1505	my ($self) = @_;	2425	my ($self) = @_;
1506		2426
1507	$self->deactivate_recursive;	2427	$self->deactivate_recursive;
1508		2428
1509	return if $self->map == $LINK_MAP;	2429	return if UNIVERSAL::isa $self->map, "ext::map_link";
1510		2430
1511	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2431	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1512	if $self->map;	2432	if $self->map && $self->map->{path} ne "{link}";
1513		2433
1514	$self->enter_map ($LINK_MAP, 20, 20);	2434	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1515	}	2435	}
1516		2436
1517	sub cf::object::player::leave_link {	2437	sub cf::object::player::leave_link {
1518	my ($self, $map, $x, $y) = @_;	2438	my ($self, $map, $x, $y) = @_;
		2439
		2440	return unless $self->contr->active;
1519		2441
1520	my $link_pos = delete $self->{_link_pos};	2442	my $link_pos = delete $self->{_link_pos};
1521		2443
1522	unless ($map) {	2444	unless ($map) {
1523	# restore original map position	2445	# restore original map position
…		…
1537	# use -1 or undef as default coordinates, not 0, 0	2459	# use -1 or undef as default coordinates, not 0, 0
1538	($x, $y) = ($map->enter_x, $map->enter_y)	2460	($x, $y) = ($map->enter_x, $map->enter_y)
1539	if $x <=0 && $y <= 0;	2461	if $x <=0 && $y <= 0;
1540		2462
1541	$map->load;	2463	$map->load;
		2464	$map->load_neighbours;
1542		2465
		2466	return unless $self->contr->active;
1543	$self->activate_recursive;	2467	$self->activate_recursive;
		2468
		2469	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1544	$self->enter_map ($map, $x, $y);	2470	$self->enter_map ($map, $x, $y);
1545	}	2471	}
1546		2472
1547	cf::player->attach (	2473	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1548	on_logout => sub {
1549	my ($pl) = @_;
1550		2474
1551	# abort map switching before logout	2475	Moves the player to the given map-path and coordinates by first freezing
1552	if ($pl->ob->{_link_pos}) {	2476	her, loading and preparing them map, calling the provided $check callback
1553	cf::sync_job {	2477	that has to return the map if sucecssful, and then unfreezes the player on
1554	$pl->ob->leave_link	2478	the new (success) or old (failed) map position. In either case, $done will
1555	};	2479	be called at the end of this process.
1556	}
1557	},
1558	on_login => sub {
1559	my ($pl) = @_;
1560		2480
1561	# try to abort aborted map switching on player login :)
1562	# should happen only on crashes
1563	if ($pl->ob->{_link_pos}) {
1564	$pl->ob->enter_link;
1565	cf::async {
1566	# we need this sleep as the login has a concurrent enter_exit running
1567	# and this sleep increases chances of the player not ending up in scorn
1568	Coro::Timer::sleep 1;
1569	$pl->ob->leave_link;
1570	};
1571	}
1572	},
1573	);
1574
1575	=item $player_object->goto_map ($path, $x, $y)
1576
1577	=cut	2481	=cut
1578		2482
		2483	our $GOTOGEN;
		2484
1579	sub cf::object::player::goto_map {	2485	sub cf::object::player::goto {
1580	my ($self, $path, $x, $y) = @_;	2486	my ($self, $path, $x, $y, $check, $done) = @_;
		2487
		2488	# do generation counting so two concurrent goto's will be executed in-order
		2489	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1581		2490
1582	$self->enter_link;	2491	$self->enter_link;
1583		2492
1584	(cf::async {	2493	(async {
1585	$path = new cf::path $path;	2494	$Coro::current->{desc} = "player::goto $path $x $y";
1586		2495
1587	my $map = cf::map::find $path->as_string;	2496	# *tag paths override both path and x|y
		2497	if ($path =~ /^\*(.*)$/) {
		2498	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2499	my $ob = $obs[rand @obs];
		2500
		2501	# see if we actually can go there
		2502	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2503	$ob = $obs[rand @obs];
		2504	} else {
		2505	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2506	}
		2507	# else put us there anyways for now #d#
		2508
		2509	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2510	} else {
		2511	($path, $x, $y) = (undef, undef, undef);
		2512	}
		2513	}
		2514
		2515	my $map = eval {
		2516	my $map = defined $path ? cf::map::find $path : undef;
		2517
		2518	if ($map) {
1588	$map = $map->customise_for ($self) if $map;	2519	$map = $map->customise_for ($self);
1589		2520	$map = $check->($map) if $check && $map;
1590	# warn "entering ", $map->path, " at ($x, $y)\n"	2521	} else {
1591	# if $map;
1592
1593	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);	2522	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2523	}
1594		2524
		2525	$map
		2526	};
		2527
		2528	if ($@) {
		2529	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2530	LOG llevError | logBacktrace, Carp::longmess $@;
		2531	}
		2532
		2533	if ($gen == $self->{_goto_generation}) {
		2534	delete $self->{_goto_generation};
1595	$self->leave_link ($map, $x, $y);	2535	$self->leave_link ($map, $x, $y);
		2536	}
		2537
		2538	$done->() if $done;
1596	})->prio (1);	2539	})->prio (1);
1597	}	2540	}
1598		2541
1599	=item $player_object->enter_exit ($exit_object)	2542	=item $player_object->enter_exit ($exit_object)
1600		2543
…		…
1602		2545
1603	sub parse_random_map_params {	2546	sub parse_random_map_params {
1604	my ($spec) = @_;	2547	my ($spec) = @_;
1605		2548
1606	my $rmp = { # defaults	2549	my $rmp = { # defaults
1607	xsize => 10,	2550	xsize => (cf::rndm 15, 40),
1608	ysize => 10,	2551	ysize => (cf::rndm 15, 40),
		2552	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2553	#layout => string,
1609	};	2554	};
1610		2555
1611	for (split /\n/, $spec) {	2556	for (split /\n/, $spec) {
1612	my ($k, $v) = split /\s+/, $_, 2;	2557	my ($k, $v) = split /\s+/, $_, 2;
1613		2558
…		…
1617	$rmp	2562	$rmp
1618	}	2563	}
1619		2564
1620	sub prepare_random_map {	2565	sub prepare_random_map {
1621	my ($exit) = @_;	2566	my ($exit) = @_;
		2567
		2568	my $guard = cf::lock_acquire "exit_prepare:$exit";
1622		2569
1623	# all this does is basically replace the /! path by	2570	# all this does is basically replace the /! path by
1624	# a new random map path (?random/...) with a seed	2571	# a new random map path (?random/...) with a seed
1625	# that depends on the exit object	2572	# that depends on the exit object
1626		2573
1627	my $rmp = parse_random_map_params $exit->msg;	2574	my $rmp = parse_random_map_params $exit->msg;
1628		2575
1629	if ($exit->map) {	2576	if ($exit->map) {
1630	$rmp->{region} = $exit->map->region_name;	2577	$rmp->{region} = $exit->region->name;
1631	$rmp->{origin_map} = $exit->map->path;	2578	$rmp->{origin_map} = $exit->map->path;
1632	$rmp->{origin_x} = $exit->x;	2579	$rmp->{origin_x} = $exit->x;
1633	$rmp->{origin_y} = $exit->y;	2580	$rmp->{origin_y} = $exit->y;
1634	}	2581	}
1635		2582
1636	$rmp->{random_seed} ||= $exit->random_seed;	2583	$rmp->{random_seed} ||= $exit->random_seed;
1637		2584
1638	my $data = cf::to_json $rmp;	2585	my $data = cf::to_json $rmp;
1639	my $md5 = Digest::MD5::md5_hex $data;	2586	my $md5 = Digest::MD5::md5_hex $data;
		2587	my $meta = "$RANDOMDIR/$md5.meta";
1640		2588
1641	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {	2589	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1642	aio_write $fh, 0, (length $data), $data, 0;	2590	aio_write $fh, 0, (length $data), $data, 0;
		2591	undef $fh;
		2592	aio_rename "$meta~", $meta;
1643		2593
1644	$exit->slaying ("?random/$md5");	2594	$exit->slaying ("?random/$md5");
1645	$exit->msg (undef);	2595	$exit->msg (undef);
1646	}	2596	}
1647	}	2597	}
…		…
1649	sub cf::object::player::enter_exit {	2599	sub cf::object::player::enter_exit {
1650	my ($self, $exit) = @_;	2600	my ($self, $exit) = @_;
1651		2601
1652	return unless $self->type == cf::PLAYER;	2602	return unless $self->type == cf::PLAYER;
1653		2603
		2604	if ($exit->slaying eq "/!") {
		2605	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2606	# the problem is that $exit might not survive long enough
		2607	# so it needs to be done right now, right here
		2608	cf::sync_job { prepare_random_map $exit };
		2609	}
		2610
		2611	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2612	my $hp = $exit->stats->hp;
		2613	my $sp = $exit->stats->sp;
		2614
1654	$self->enter_link;	2615	$self->enter_link;
1655		2616
		2617	# if exit is damned, update players death & WoR home-position
		2618	$self->contr->savebed ($slaying, $hp, $sp)
		2619	if $exit->flag (FLAG_DAMNED);
		2620
1656	(cf::async {	2621	(async {
		2622	$Coro::current->{desc} = "enter_exit $slaying $hp $sp";
		2623
1657	$self->deactivate_recursive; # just to be sure	2624	$self->deactivate_recursive; # just to be sure
1658	unless (eval {	2625	unless (eval {
1659	prepare_random_map $exit	2626	$self->goto ($slaying, $hp, $sp);
1660	if $exit->slaying eq "/!";
1661
1662	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1663	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
1664		2627
1665	1;	2628	1;
1666	}) {	2629	}) {
1667	$self->message ("Something went wrong deep within the crossfire server. "	2630	$self->message ("Something went wrong deep within the crossfire server. "
1668	. "I'll try to bring you back to the map you were before. "	2631	. "I'll try to bring you back to the map you were before. "
1669	. "Please report this to the dungeon master",	2632	. "Please report this to the dungeon master!",
1670	cf::NDI_UNIQUE | cf::NDI_RED);	2633	cf::NDI_UNIQUE | cf::NDI_RED);
1671		2634
1672	warn "ERROR in enter_exit: $@";	2635	warn "ERROR in enter_exit: $@";
1673	$self->leave_link;	2636	$self->leave_link;
1674	}	2637	}
1675	})->prio (1);	2638	})->prio (1);
…		…
1688		2651
1689	sub cf::client::send_drawinfo {	2652	sub cf::client::send_drawinfo {
1690	my ($self, $text, $flags) = @_;	2653	my ($self, $text, $flags) = @_;
1691		2654
1692	utf8::encode $text;	2655	utf8::encode $text;
1693	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2656	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1694	}	2657	}
1695		2658
		2659	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2660
		2661	Send a drawinfo or msg packet to the client, formatting the msg for the
		2662	client if neccessary. C<$type> should be a string identifying the type of
		2663	the message, with C<log> being the default. If C<$color> is negative, suppress
		2664	the message unless the client supports the msg packet.
		2665
		2666	=cut
		2667
		2668	our %CHANNEL = (
		2669	"c/identify" => {
		2670	id => "infobox",
		2671	title => "Identify",
		2672	reply => undef,
		2673	tooltip => "Items recently identified",
		2674	},
		2675	"c/examine" => {
		2676	id => "infobox",
		2677	title => "Examine",
		2678	reply => undef,
		2679	tooltip => "Signs and other items you examined",
		2680	},
		2681	"c/lookat" => {
		2682	id => "infobox",
		2683	title => "Look",
		2684	reply => undef,
		2685	tooltip => "What you saw there",
		2686	},
		2687	);
		2688
		2689	sub cf::client::send_msg {
		2690	my ($self, $channel, $msg, $color, @extra) = @_;
		2691
		2692	$msg = $self->pl->expand_cfpod ($msg);
		2693
		2694	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2695
		2696	# check predefined channels, for the benefit of C
		2697	if ($CHANNEL{$channel}) {
		2698	$channel = $CHANNEL{$channel};
		2699
		2700	$self->ext_msg (channel_info => $channel)
		2701	if $self->can_msg;
		2702
		2703	$channel = $channel->{id};
		2704
		2705	} elsif (ref $channel) {
		2706	# send meta info to client, if not yet sent
		2707	unless (exists $self->{channel}{$channel->{id}}) {
		2708	$self->{channel}{$channel->{id}} = $channel;
		2709	$self->ext_msg (channel_info => $channel)
		2710	if $self->can_msg;
		2711	}
		2712
		2713	$channel = $channel->{id};
		2714	}
		2715
		2716	return unless @extra || length $msg;
		2717
		2718	if ($self->can_msg) {
		2719	# default colour, mask it out
		2720	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2721	if $color & cf::NDI_DEF;
		2722
		2723	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2724	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2725	} else {
		2726	if ($color >= 0) {
		2727	# replace some tags by gcfclient-compatible ones
		2728	for ($msg) {
		2729	1 while
		2730	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2731	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2732	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2733	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2734	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2735	}
		2736
		2737	$color &= cf::NDI_COLOR_MASK;
		2738
		2739	utf8::encode $msg;
		2740
		2741	if (0 && $msg =~ /\[/) {
		2742	# COMMAND/INFO
		2743	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2744	} else {
		2745	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2746	$self->send_packet ("drawinfo $color $msg")
		2747	}
		2748	}
		2749	}
		2750	}
		2751
		2752	=item $client->ext_msg ($type, @msg)
		2753
		2754	Sends an ext event to the client.
		2755
		2756	=cut
		2757
		2758	sub cf::client::ext_msg($$@) {
		2759	my ($self, $type, @msg) = @_;
		2760
		2761	if ($self->extcmd == 2) {
		2762	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2763	} elsif ($self->extcmd == 1) { # TODO: remove
		2764	push @msg, msgtype => "event_$type";
		2765	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2766	}
		2767	}
		2768
		2769	=item $client->ext_reply ($msgid, @msg)
		2770
		2771	Sends an ext reply to the client.
		2772
		2773	=cut
		2774
		2775	sub cf::client::ext_reply($$@) {
		2776	my ($self, $id, @msg) = @_;
		2777
		2778	if ($self->extcmd == 2) {
		2779	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2780	} elsif ($self->extcmd == 1) {
		2781	#TODO: version 1, remove
		2782	unshift @msg, msgtype => "reply", msgid => $id;
		2783	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2784	}
		2785	}
1696		2786
1697	=item $success = $client->query ($flags, "text", \&cb)	2787	=item $success = $client->query ($flags, "text", \&cb)
1698		2788
1699	Queues a query to the client, calling the given callback with	2789	Queues a query to the client, calling the given callback with
1700	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2790	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
1701	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2791	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1702		2792
1703	Queries can fail, so check the return code. Or don't, as queries will become	2793	Queries can fail, so check the return code. Or don't, as queries will
1704	reliable at some point in the future.	2794	become reliable at some point in the future.
1705		2795
1706	=cut	2796	=cut
1707		2797
1708	sub cf::client::query {	2798	sub cf::client::query {
1709	my ($self, $flags, $text, $cb) = @_;	2799	my ($self, $flags, $text, $cb) = @_;
…		…
1717	utf8::encode $text;	2807	utf8::encode $text;
1718	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2808	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1719		2809
1720	$self->send_packet ($self->{query_queue}[0][0])	2810	$self->send_packet ($self->{query_queue}[0][0])
1721	if @{ $self->{query_queue} } == 1;	2811	if @{ $self->{query_queue} } == 1;
		2812
		2813	1
1722	}	2814	}
1723		2815
1724	cf::client->attach (	2816	cf::client->attach (
		2817	on_connect => sub {
		2818	my ($ns) = @_;
		2819
		2820	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2821	},
1725	on_reply => sub {	2822	on_reply => sub {
1726	my ($ns, $msg) = @_;	2823	my ($ns, $msg) = @_;
1727		2824
1728	# this weird shuffling is so that direct followup queries	2825	# this weird shuffling is so that direct followup queries
1729	# get handled first	2826	# get handled first
1730	my $queue = delete $ns->{query_queue}	2827	my $queue = delete $ns->{query_queue}
1731	or return; # be conservative, not sure how that can happen, but we saw a crash here	2828	or return; # be conservative, not sure how that can happen, but we saw a crash here
1732		2829
1733	(shift @$queue)->[1]->($msg);	2830	(shift @$queue)->[1]->($msg);
		2831	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
1734		2832
1735	push @{ $ns->{query_queue} }, @$queue;	2833	push @{ $ns->{query_queue} }, @$queue;
1736		2834
1737	if (@{ $ns->{query_queue} } == @$queue) {	2835	if (@{ $ns->{query_queue} } == @$queue) {
1738	if (@$queue) {	2836	if (@$queue) {
…		…
1740	} else {	2838	} else {
1741	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2839	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
1742	}	2840	}
1743	}	2841	}
1744	},	2842	},
		2843	on_exticmd => sub {
		2844	my ($ns, $buf) = @_;
		2845
		2846	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2847
		2848	if (ref $msg) {
		2849	my ($type, $reply, @payload) =
		2850	"ARRAY" eq ref $msg
		2851	? @$msg
		2852	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2853
		2854	my @reply;
		2855
		2856	if (my $cb = $EXTICMD{$type}) {
		2857	@reply = $cb->($ns, @payload);
		2858	}
		2859
		2860	$ns->ext_reply ($reply, @reply)
		2861	if $reply;
		2862
		2863	} else {
		2864	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2865	}
		2866
		2867	cf::override;
		2868	},
1745	);	2869	);
1746		2870
1747	=item $client->coro (\&cb)	2871	=item $client->async (\&cb)
1748		2872
1749	Create a new coroutine, running the specified callback. The coroutine will	2873	Create a new coroutine, running the specified callback. The coroutine will
1750	be automatically cancelled when the client gets destroyed (e.g. on logout,	2874	be automatically cancelled when the client gets destroyed (e.g. on logout,
1751	or loss of connection).	2875	or loss of connection).
1752		2876
1753	=cut	2877	=cut
1754		2878
1755	sub cf::client::coro {	2879	sub cf::client::async {
1756	my ($self, $cb) = @_;	2880	my ($self, $cb) = @_;
1757		2881
1758	my $coro = &cf::async ($cb);	2882	my $coro = &Coro::async ($cb);
1759		2883
1760	$coro->on_destroy (sub {	2884	$coro->on_destroy (sub {
1761	delete $self->{_coro}{$coro+0};	2885	delete $self->{_coro}{$coro+0};
1762	});	2886	});
1763		2887
…		…
1790	our $safe = new Safe "safe";	2914	our $safe = new Safe "safe";
1791	our $safe_hole = new Safe::Hole;	2915	our $safe_hole = new Safe::Hole;
1792		2916
1793	$SIG{FPE} = 'IGNORE';	2917	$SIG{FPE} = 'IGNORE';
1794		2918
1795	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2919	$safe->permit_only (Opcode::opset qw(
		2920	:base_core :base_mem :base_orig :base_math
		2921	grepstart grepwhile mapstart mapwhile
		2922	sort time
		2923	));
1796		2924
1797	# here we export the classes and methods available to script code	2925	# here we export the classes and methods available to script code
1798		2926
1799	=pod	2927	=pod
1800		2928
1801	The following fucntions and emthods are available within a safe environment:	2929	The following functions and methods are available within a safe environment:
1802		2930
1803	cf::object contr pay_amount pay_player map	2931	cf::object
		2932	contr pay_amount pay_player map x y force_find force_add destroy
		2933	insert remove name archname title slaying race decrease_ob_nr
		2934
1804	cf::object::player player	2935	cf::object::player
1805	cf::player peaceful	2936	player
1806	cf::map trigger	2937
		2938	cf::player
		2939	peaceful
		2940
		2941	cf::map
		2942	trigger
1807		2943
1808	=cut	2944	=cut
1809		2945
1810	for (	2946	for (
1811	["cf::object" => qw(contr pay_amount pay_player map)],	2947	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2948	insert remove inv name archname title slaying race
		2949	decrease_ob_nr destroy)],
1812	["cf::object::player" => qw(player)],	2950	["cf::object::player" => qw(player)],
1813	["cf::player" => qw(peaceful)],	2951	["cf::player" => qw(peaceful)],
1814	["cf::map" => qw(trigger)],	2952	["cf::map" => qw(trigger)],
1815	) {	2953	) {
1816	no strict 'refs';	2954	no strict 'refs';
…		…
1887	=back	3025	=back
1888		3026
1889	=cut	3027	=cut
1890		3028
1891	#############################################################################	3029	#############################################################################
		3030	# the server's init and main functions
1892		3031
1893	=head2 EXTENSION DATABASE SUPPORT	3032	sub load_facedata($) {
		3033	my ($path) = @_;
1894		3034
1895	Crossfire maintains a very simple database for extension use. It can	3035	# HACK to clear player env face cache, we need some signal framework
1896	currently store anything that can be serialised using Storable, which	3036	# for this (global event?)
1897	excludes objects.	3037	%ext::player_env::MUSIC_FACE_CACHE = ();
1898		3038
1899	The parameter C<$family> should best start with the name of the extension	3039	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1900	using it, it should be unique.
1901		3040
1902	=over 4	3041	warn "loading facedata from $path\n";
1903		3042
1904	=item $hashref = cf::db_get $family	3043	my $facedata;
		3044	0 < aio_load $path, $facedata
		3045	or die "$path: $!";
1905		3046
1906	Return a hashref for use by the extension C<$family>, which can be	3047	$facedata = Coro::Storable::thaw $facedata;
1907	modified. After modifications, you have to call C<cf::db_dirty> or
1908	C<cf::db_sync>.
1909		3048
1910	=item $value = cf::db_get $family => $key	3049	$facedata->{version} == 2
		3050	or cf::cleanup "$path: version mismatch, cannot proceed.";
1911		3051
1912	Returns a single value from the database	3052	# patch in the exptable
1913		3053	$facedata->{resource}{"res/exp_table"} = {
1914	=item cf::db_put $family => $hashref	3054	type => FT_RSRC,
1915		3055	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
1916	Stores the given family hashref into the database. Updates are delayed, if
1917	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1918
1919	=item cf::db_put $family => $key => $value
1920
1921	Stores the given C<$value> in the family hash. Updates are delayed, if you
1922	want the data to be synced to disk immediately, use C<cf::db_sync>.
1923
1924	=item cf::db_dirty
1925
1926	Marks the database as dirty, to be updated at a later time.
1927
1928	=item cf::db_sync
1929
1930	Immediately write the database to disk I<if it is dirty>.
1931
1932	=cut
1933
1934	our $DB;
1935
1936	{
1937	my $path = cf::localdir . "/database.pst";
1938
1939	sub db_load() {
1940	$DB = stat $path ? Storable::retrieve $path : { };
1941	}
1942
1943	my $pid;
1944
1945	sub db_save() {
1946	waitpid $pid, 0 if $pid;
1947	if (0 == ($pid = fork)) {
1948	$DB->{_meta}{version} = 1;
1949	Storable::nstore $DB, "$path~";
1950	rename "$path~", $path;
1951	cf::_exit 0 if defined $pid;
1952	}
1953	}
1954
1955	my $dirty;
1956
1957	sub db_sync() {
1958	db_save if $dirty;
1959	undef $dirty;
1960	}
1961
1962	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1963	db_sync;
1964	});	3056	};
		3057	cf::cede_to_tick;
1965		3058
1966	sub db_dirty() {
1967	$dirty = 1;
1968	$idle->start;
1969	}	3059	{
		3060	my $faces = $facedata->{faceinfo};
1970		3061
1971	sub db_get($;$) {	3062	while (my ($face, $info) = each %$faces) {
1972	@_ >= 2	3063	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1973	? $DB->{$_[0]}{$_[1]}	3064	cf::face::set_visibility $idx, $info->{visibility};
1974	: ($DB->{$_[0]} ||= { })	3065	cf::face::set_magicmap $idx, $info->{magicmap};
1975	}	3066	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3067	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1976		3068
1977	sub db_put($$;$) {	3069	cf::cede_to_tick;
1978	if (@_ >= 3) {
1979	$DB->{$_[0]}{$_[1]} = $_[2];
1980	} else {
1981	$DB->{$_[0]} = $_[1];
1982	}
1983	db_dirty;
1984	}
1985
1986	cf::global->attach (
1987	prio => 10000,
1988	on_cleanup => sub {
1989	db_sync;
1990	},	3070	}
1991	);
1992	}
1993		3071
1994	#############################################################################	3072	while (my ($face, $info) = each %$faces) {
1995	# the server's main()	3073	next unless $info->{smooth};
		3074	my $idx = cf::face::find $face
		3075	or next;
		3076	if (my $smooth = cf::face::find $info->{smooth}) {
		3077	cf::face::set_smooth $idx, $smooth;
		3078	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3079	} else {
		3080	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3081	}
1996		3082
1997	sub cfg_load {	3083	cf::cede_to_tick;
		3084	}
		3085	}
		3086
		3087	{
		3088	my $anims = $facedata->{animinfo};
		3089
		3090	while (my ($anim, $info) = each %$anims) {
		3091	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3092	cf::cede_to_tick;
		3093	}
		3094
		3095	cf::anim::invalidate_all; # d'oh
		3096	}
		3097
		3098	{
		3099	# TODO: for gcfclient pleasure, we should give resources
		3100	# that gcfclient doesn't grok a >10000 face index.
		3101	my $res = $facedata->{resource};
		3102
		3103	my $soundconf = delete $res->{"res/sound.conf"};
		3104
		3105	while (my ($name, $info) = each %$res) {
		3106	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3107	my $data;
		3108
		3109	if ($info->{type} & 1) {
		3110	# prepend meta info
		3111
		3112	my $meta = $enc->encode ({
		3113	name => $name,
		3114	%{ $info->{meta} || {} },
		3115	});
		3116
		3117	$data = pack "(w/a*)*", $meta, $info->{data};
		3118	} else {
		3119	$data = $info->{data};
		3120	}
		3121
		3122	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3123	cf::face::set_type $idx, $info->{type};
		3124
		3125	cf::cede_to_tick;
		3126	}
		3127
		3128	if ($soundconf) {
		3129	$soundconf = $enc->decode (delete $soundconf->{data});
		3130
		3131	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3132	my $sound = $soundconf->{compat}[$_]
		3133	or next;
		3134
		3135	my $face = cf::face::find "sound/$sound->[1]";
		3136	cf::sound::set $sound->[0] => $face;
		3137	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3138	}
		3139
		3140	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3141	my $face = cf::face::find "sound/$v";
		3142	cf::sound::set $k => $face;
		3143	}
		3144	}
		3145	}
		3146
		3147	1
		3148	}
		3149
		3150	register_exticmd fx_want => sub {
		3151	my ($ns, $want) = @_;
		3152
		3153	while (my ($k, $v) = each %$want) {
		3154	$ns->fx_want ($k, $v);
		3155	}
		3156	};
		3157
		3158	sub reload_regions {
		3159	# HACK to clear player env face cache, we need some signal framework
		3160	# for this (global event?)
		3161	%ext::player_env::MUSIC_FACE_CACHE = ();
		3162
		3163	load_resource_file "$MAPDIR/regions"
		3164	or die "unable to load regions file\n";
		3165
		3166	for (cf::region::list) {
		3167	$_->{match} = qr/$_->{match}/
		3168	if exists $_->{match};
		3169	}
		3170	}
		3171
		3172	sub reload_facedata {
		3173	load_facedata "$DATADIR/facedata"
		3174	or die "unable to load facedata\n";
		3175	}
		3176
		3177	sub reload_archetypes {
		3178	load_resource_file "$DATADIR/archetypes"
		3179	or die "unable to load archetypes\n";
		3180	#d# NEED to laod twice to resolve forward references
		3181	# this really needs to be done in an extra post-pass
		3182	# (which needs to be synchronous, so solve it differently)
		3183	load_resource_file "$DATADIR/archetypes"
		3184	or die "unable to load archetypes\n";
		3185	}
		3186
		3187	sub reload_treasures {
		3188	load_resource_file "$DATADIR/treasures"
		3189	or die "unable to load treasurelists\n";
		3190	}
		3191
		3192	sub reload_resources {
		3193	warn "reloading resource files...\n";
		3194
		3195	reload_regions;
		3196	reload_facedata;
		3197	#reload_archetypes;#d#
		3198	reload_archetypes;
		3199	reload_treasures;
		3200
		3201	warn "finished reloading resource files\n";
		3202	}
		3203
		3204	sub init {
		3205	reload_resources;
		3206	}
		3207
		3208	sub reload_config {
1998	open my $fh, "<:utf8", cf::confdir . "/config"	3209	open my $fh, "<:utf8", "$CONFDIR/config"
1999	or return;	3210	or return;
2000		3211
2001	local $/;	3212	local $/;
2002	*CFG = YAML::Syck::Load <$fh>;	3213	*CFG = YAML::Syck::Load <$fh>;
2003		3214
2004	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];	3215	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2005		3216
		3217	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3218	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3219
2006	if (exists $CFG{mlockall}) {	3220	if (exists $CFG{mlockall}) {
2007	eval {	3221	eval {
2008	$CFG{mlockall} ? &mlockall : &munlockall	3222	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2009	and die "WARNING: m(un)lockall failed: $!\n";	3223	and die "WARNING: m(un)lockall failed: $!\n";
2010	};	3224	};
2011	warn $@ if $@;	3225	warn $@ if $@;
2012	}	3226	}
2013	}	3227	}
2014		3228
2015	sub main {	3229	sub main {
2016	# we must not ever block the main coroutine	3230	# we must not ever block the main coroutine
2017	local $Coro::idle = sub {	3231	local $Coro::idle = sub {
2018	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#	3232	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2019	(Coro::unblock_sub {	3233	(async {
		3234	$Coro::current->{desc} = "IDLE BUG HANDLER";
2020	Event::one_event;	3235	Event::one_event;
2021	})->();	3236	})->prio (Coro::PRIO_MAX);
2022	};	3237	};
2023		3238
2024	cfg_load;	3239	reload_config;
2025	db_load;	3240	db_init;
2026	load_extensions;	3241	load_extensions;
		3242
		3243	$TICK_WATCHER->start;
2027	Event::loop;	3244	Event::loop;
2028	}	3245	}
2029		3246
2030	#############################################################################	3247	#############################################################################
2031	# initialisation	3248	# initialisation and cleanup
2032		3249
		3250	# install some emergency cleanup handlers
		3251	BEGIN {
		3252	for my $signal (qw(INT HUP TERM)) {
		3253	Event->signal (
		3254	reentrant => 0,
		3255	data => WF_AUTOCANCEL,
		3256	signal => $signal,
		3257	prio => 0,
		3258	cb => sub {
		3259	cf::cleanup "SIG$signal";
		3260	},
		3261	);
		3262	}
		3263	}
		3264
		3265	sub write_runtime {
		3266	my $runtime = "$LOCALDIR/runtime";
		3267
		3268	# first touch the runtime file to show we are still running:
		3269	# the fsync below can take a very very long time.
		3270
		3271	IO::AIO::aio_utime $runtime, undef, undef;
		3272
		3273	my $guard = cf::lock_acquire "write_runtime";
		3274
		3275	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3276	or return;
		3277
		3278	my $value = $cf::RUNTIME + 90 + 10;
		3279	# 10 is the runtime save interval, for a monotonic clock
		3280	# 60 allows for the watchdog to kill the server.
		3281
		3282	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3283	and return;
		3284
		3285	# always fsync - this file is important
		3286	aio_fsync $fh
		3287	and return;
		3288
		3289	# touch it again to show we are up-to-date
		3290	aio_utime $fh, undef, undef;
		3291
		3292	close $fh
		3293	or return;
		3294
		3295	aio_rename "$runtime~", $runtime
		3296	and return;
		3297
		3298	warn "runtime file written.\n";
		3299
		3300	1
		3301	}
		3302
		3303	sub emergency_save() {
		3304	my $freeze_guard = cf::freeze_mainloop;
		3305
		3306	warn "enter emergency perl save\n";
		3307
		3308	cf::sync_job {
		3309	# use a peculiar iteration method to avoid tripping on perl
		3310	# refcount bugs in for. also avoids problems with players
		3311	# and maps saved/destroyed asynchronously.
		3312	warn "begin emergency player save\n";
		3313	for my $login (keys %cf::PLAYER) {
		3314	my $pl = $cf::PLAYER{$login} or next;
		3315	$pl->valid or next;
		3316	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3317	$pl->save;
		3318	}
		3319	warn "end emergency player save\n";
		3320
		3321	warn "begin emergency map save\n";
		3322	for my $path (keys %cf::MAP) {
		3323	my $map = $cf::MAP{$path} or next;
		3324	$map->valid or next;
		3325	$map->save;
		3326	}
		3327	warn "end emergency map save\n";
		3328
		3329	warn "begin emergency database checkpoint\n";
		3330	BDB::db_env_txn_checkpoint $DB_ENV;
		3331	warn "end emergency database checkpoint\n";
		3332	};
		3333
		3334	warn "leave emergency perl save\n";
		3335	}
		3336
		3337	sub post_cleanup {
		3338	my ($make_core) = @_;
		3339
		3340	warn Carp::longmess "post_cleanup backtrace"
		3341	if $make_core;
		3342	}
		3343
2033	sub reload() {	3344	sub do_reload_perl() {
2034	# can/must only be called in main	3345	# can/must only be called in main
2035	if ($Coro::current != $Coro::main) {	3346	if ($Coro::current != $Coro::main) {
2036	warn "can only reload from main coroutine\n";	3347	warn "can only reload from main coroutine";
2037	return;	3348	return;
2038	}	3349	}
2039		3350
2040	warn "reloading...";	3351	warn "reloading...";
2041		3352
2042	my $guard = freeze_mainloop;	3353	warn "entering sync_job";
		3354
		3355	cf::sync_job {
		3356	cf::write_runtime; # external watchdog should not bark
2043	cf::emergency_save;	3357	cf::emergency_save;
		3358	cf::write_runtime; # external watchdog should not bark
2044		3359
2045	eval {	3360	warn "syncing database to disk";
		3361	BDB::db_env_txn_checkpoint $DB_ENV;
		3362
2046	# if anything goes wrong in here, we should simply crash as we already saved	3363	# if anything goes wrong in here, we should simply crash as we already saved
2047		3364
2048	# cancel all watchers	3365	warn "cancelling all WF_AUTOCANCEL watchers";
2049	for (Event::all_watchers) {	3366	for (Event::all_watchers) {
2050	$_->cancel if $_->data & WF_AUTOCANCEL;	3367	$_->cancel if $_->data & WF_AUTOCANCEL;
2051	}	3368	}
2052		3369
		3370	warn "flushing outstanding aio requests";
		3371	for (;;) {
		3372	BDB::flush;
		3373	IO::AIO::flush;
		3374	Coro::cede;
		3375	last unless IO::AIO::nreqs || BDB::nreqs;
		3376	warn "iterate...";
		3377	}
		3378
		3379	++$RELOAD;
		3380
2053	# cancel all extension coros	3381	warn "cancelling all extension coros";
2054	$_->cancel for values %EXT_CORO;	3382	$_->cancel for values %EXT_CORO;
2055	%EXT_CORO = ();	3383	%EXT_CORO = ();
2056		3384
2057	# unload all extensions	3385	warn "removing commands";
2058	for (@exts) {	3386	%COMMAND = ();
		3387
		3388	warn "removing ext/exti commands";
		3389	%EXTCMD = ();
		3390	%EXTICMD = ();
		3391
		3392	warn "unloading/nuking all extensions";
		3393	for my $pkg (@EXTS) {
2059	warn "unloading <$_>";	3394	warn "... unloading $pkg";
2060	unload_extension $_;	3395
		3396	if (my $cb = $pkg->can ("unload")) {
		3397	eval {
		3398	$cb->($pkg);
		3399	1
		3400	} or warn "$pkg unloaded, but with errors: $@";
2061	}	3401	}
2062		3402
		3403	warn "... nuking $pkg";
		3404	Symbol::delete_package $pkg;
		3405	}
		3406
2063	# unload all modules loaded from $LIBDIR	3407	warn "unloading all perl modules loaded from $LIBDIR";
2064	while (my ($k, $v) = each %INC) {	3408	while (my ($k, $v) = each %INC) {
2065	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3409	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
2066		3410
2067	warn "removing <$k>";	3411	warn "... unloading $k";
2068	delete $INC{$k};	3412	delete $INC{$k};
2069		3413
2070	$k =~ s/\.pm$//;	3414	$k =~ s/\.pm$//;
2071	$k =~ s/\//::/g;	3415	$k =~ s/\//::/g;
2072		3416
…		…
2075	}	3419	}
2076		3420
2077	Symbol::delete_package $k;	3421	Symbol::delete_package $k;
2078	}	3422	}
2079		3423
2080	# sync database to disk
2081	cf::db_sync;
2082	IO::AIO::flush;
2083
2084	# get rid of safe::, as good as possible	3424	warn "getting rid of safe::, as good as possible";
2085	Symbol::delete_package "safe::$_"	3425	Symbol::delete_package "safe::$_"
2086	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	3426	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2087		3427
2088	# remove register_script_function callbacks
2089	# TODO
2090
2091	# unload cf.pm "a bit"	3428	warn "unloading cf.pm \"a bit\"";
2092	delete $INC{"cf.pm"};	3429	delete $INC{"cf.pm"};
		3430	delete $INC{"cf/pod.pm"};
2093		3431
2094	# don't, removes xs symbols, too,	3432	# don't, removes xs symbols, too,
2095	# and global variables created in xs	3433	# and global variables created in xs
2096	#Symbol::delete_package __PACKAGE__;	3434	#Symbol::delete_package __PACKAGE__;
2097		3435
2098	# reload cf.pm	3436	warn "unload completed, starting to reload now";
		3437
2099	warn "reloading cf.pm";	3438	warn "reloading cf.pm";
2100	require cf;	3439	require cf;
2101	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3440	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2102		3441
2103	# load config and database again	3442	warn "loading config and database again";
2104	cf::cfg_load;	3443	cf::reload_config;
2105	cf::db_load;
2106		3444
2107	# load extensions
2108	warn "load extensions";	3445	warn "loading extensions";
2109	cf::load_extensions;	3446	cf::load_extensions;
2110		3447
2111	# reattach attachments to objects	3448	warn "reattaching attachments to objects/players";
2112	warn "reattach";	3449	_global_reattach; # objects, sockets
2113	_global_reattach;	3450	warn "reattaching attachments to maps";
2114	};	3451	reattach $_ for values %MAP;
		3452	warn "reattaching attachments to players";
		3453	reattach $_ for values %PLAYER;
2115		3454
2116	if ($@) {	3455	warn "leaving sync_job";
		3456
		3457	1
		3458	} or do {
2117	warn $@;	3459	warn $@;
2118	warn "error while reloading, exiting.";	3460	warn "error while reloading, exiting.";
2119	exit 1;	3461	exit 1;
2120	}	3462	};
2121		3463
2122	warn "reloaded successfully";	3464	warn "reloaded";
2123	};	3465	};
2124		3466
2125	#############################################################################	3467	our $RELOAD_WATCHER; # used only during reload
2126		3468
2127	unless ($LINK_MAP) {	3469	sub reload_perl() {
2128	$LINK_MAP = cf::map::new;	3470	# doing reload synchronously and two reloads happen back-to-back,
		3471	# coro crashes during coro_state_free->destroy here.
2129		3472
2130	$LINK_MAP->width (41);	3473	$RELOAD_WATCHER ||= Event->timer (
2131	$LINK_MAP->height (41);	3474	reentrant => 0,
2132	$LINK_MAP->alloc;
2133	$LINK_MAP->path ("{link}");
2134	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
2135	$LINK_MAP->in_memory (MAP_IN_MEMORY);
2136
2137	# dirty hack because... archetypes are not yet loaded
2138	Event->timer (
2139	after => 2,	3475	after => 0,
		3476	data => WF_AUTOCANCEL,
2140	cb => sub {	3477	cb => sub {
2141	$_[0]->w->cancel;	3478	do_reload_perl;
2142		3479	undef $RELOAD_WATCHER;
2143	# provide some exits "home"
2144	my $exit = cf::object::new "exit";
2145
2146	$exit->slaying ($EMERGENCY_POSITION->[0]);
2147	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
2148	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
2149
2150	$LINK_MAP->insert ($exit->clone, 19, 19);
2151	$LINK_MAP->insert ($exit->clone, 19, 20);
2152	$LINK_MAP->insert ($exit->clone, 19, 21);
2153	$LINK_MAP->insert ($exit->clone, 20, 19);
2154	$LINK_MAP->insert ($exit->clone, 20, 21);
2155	$LINK_MAP->insert ($exit->clone, 21, 19);
2156	$LINK_MAP->insert ($exit->clone, 21, 20);
2157	$LINK_MAP->insert ($exit->clone, 21, 21);
2158
2159	$exit->destroy;
2160	});	3480	},
2161		3481	);
2162	$LINK_MAP->{deny_save} = 1;
2163	$LINK_MAP->{deny_reset} = 1;
2164
2165	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
2166	}	3482	}
2167
2168	register "<global>", __PACKAGE__;
2169		3483
2170	register_command "reload" => sub {	3484	register_command "reload" => sub {
2171	my ($who, $arg) = @_;	3485	my ($who, $arg) = @_;
2172		3486
2173	if ($who->flag (FLAG_WIZ)) {	3487	if ($who->flag (FLAG_WIZ)) {
2174	$who->message ("start of reload.");
2175	reload;
2176	$who->message ("end of reload.");	3488	$who->message ("reloading server.");
		3489	async {
		3490	$Coro::current->{desc} = "perl_reload";
		3491	reload_perl;
		3492	};
2177	}	3493	}
2178	};	3494	};
2179		3495
2180	unshift @INC, $LIBDIR;	3496	unshift @INC, $LIBDIR;
		3497
		3498	my $bug_warning = 0;
		3499
		3500	our @WAIT_FOR_TICK;
		3501	our @WAIT_FOR_TICK_BEGIN;
		3502
		3503	sub wait_for_tick {
		3504	return unless $TICK_WATCHER->is_active;
		3505	return if $Coro::current == $Coro::main;
		3506
		3507	my $signal = new Coro::Signal;
		3508	push @WAIT_FOR_TICK, $signal;
		3509	$signal->wait;
		3510	}
		3511
		3512	sub wait_for_tick_begin {
		3513	return unless $TICK_WATCHER->is_active;
		3514	return if $Coro::current == $Coro::main;
		3515
		3516	my $signal = new Coro::Signal;
		3517	push @WAIT_FOR_TICK_BEGIN, $signal;
		3518	$signal->wait;
		3519	}
2181		3520
2182	$TICK_WATCHER = Event->timer (	3521	$TICK_WATCHER = Event->timer (
2183	reentrant => 0,	3522	reentrant => 0,
		3523	parked => 1,
2184	prio => 0,	3524	prio => 0,
2185	at => $NEXT_TICK || $TICK,	3525	at => $NEXT_TICK || $TICK,
2186	data => WF_AUTOCANCEL,	3526	data => WF_AUTOCANCEL,
2187	cb => sub {	3527	cb => sub {
		3528	if ($Coro::current != $Coro::main) {
		3529	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3530	unless ++$bug_warning > 10;
		3531	return;
		3532	}
		3533
		3534	$NOW = $tick_start = Event::time;
		3535
2188	cf::server_tick; # one server iteration	3536	cf::server_tick; # one server iteration
		3537
2189	$RUNTIME += $TICK;	3538	$RUNTIME += $TICK;
2190	$NEXT_TICK += $TICK;	3539	$NEXT_TICK += $TICK;
2191		3540
		3541	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3542	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3543	Coro::async_pool {
		3544	$Coro::current->{desc} = "runtime saver";
		3545	write_runtime
		3546	or warn "ERROR: unable to write runtime file: $!";
		3547	};
		3548	}
		3549
		3550	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3551	$sig->send;
		3552	}
		3553	while (my $sig = shift @WAIT_FOR_TICK) {
		3554	$sig->send;
		3555	}
		3556
		3557	$NOW = Event::time;
		3558
2192	# if we are delayed by four ticks or more, skip them all	3559	# if we are delayed by four ticks or more, skip them all
2193	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3560	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2194		3561
2195	$TICK_WATCHER->at ($NEXT_TICK);	3562	$TICK_WATCHER->at ($NEXT_TICK);
2196	$TICK_WATCHER->start;	3563	$TICK_WATCHER->start;
		3564
		3565	$LOAD = ($NOW - $tick_start) / $TICK;
		3566	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3567
		3568	_post_tick;
2197	},	3569	},
2198	);	3570	);
2199		3571
		3572	{
		3573	BDB::min_parallel 8;
2200	IO::AIO::max_poll_time $TICK * 0.2;	3574	BDB::max_poll_time $TICK * 0.1;
2201		3575	$BDB_POLL_WATCHER = Event->io (
2202	Event->io (	3576	reentrant => 0,
2203	fd => IO::AIO::poll_fileno,	3577	fd => BDB::poll_fileno,
2204	poll => 'r',	3578	poll => 'r',
2205	prio => 5,	3579	prio => 0,
2206	data => WF_AUTOCANCEL,
2207	cb => \&IO::AIO::poll_cb,
2208	);
2209
2210	Event->timer (
2211	data => WF_AUTOCANCEL,	3580	data => WF_AUTOCANCEL,
		3581	cb => \&BDB::poll_cb,
		3582	);
		3583
		3584	BDB::set_sync_prepare {
		3585	my $status;
		3586	my $current = $Coro::current;
		3587	(
		3588	sub {
		3589	$status = $!;
		3590	$current->ready; undef $current;
		3591	},
		3592	sub {
		3593	Coro::schedule while defined $current;
		3594	$! = $status;
		3595	},
		3596	)
		3597	};
		3598
		3599	unless ($DB_ENV) {
		3600	$DB_ENV = BDB::db_env_create;
		3601	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC
		3602	| BDB::LOG_AUTOREMOVE, 1);
		3603	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3604	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		3605
		3606	cf::sync_job {
		3607	eval {
		3608	BDB::db_env_open
		3609	$DB_ENV,
		3610	$BDBDIR,
		3611	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3612	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3613	0666;
		3614
		3615	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3616	};
		3617
		3618	cf::cleanup "db_env_open(db): $@" if $@;
		3619	};
		3620	}
		3621
		3622	$BDB_DEADLOCK_WATCHER = Event->timer (
2212	after => 0,	3623	after => 3,
2213	interval => 10,	3624	interval => 1,
		3625	hard => 1,
		3626	prio => 0,
		3627	data => WF_AUTOCANCEL,
2214	cb => sub {	3628	cb => sub {
2215	(Coro::unblock_sub {	3629	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
2216	write_runtime	3630	},
2217	or warn "ERROR: unable to write runtime file: $!";	3631	);
		3632	$BDB_CHECKPOINT_WATCHER = Event->timer (
		3633	after => 11,
		3634	interval => 60,
		3635	hard => 1,
		3636	prio => 0,
		3637	data => WF_AUTOCANCEL,
		3638	cb => sub {
		3639	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3640	},
		3641	);
		3642	$BDB_TRICKLE_WATCHER = Event->timer (
		3643	after => 5,
		3644	interval => 10,
		3645	hard => 1,
		3646	prio => 0,
		3647	data => WF_AUTOCANCEL,
		3648	cb => sub {
		3649	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3650	},
		3651	);
		3652	}
		3653
		3654	{
		3655	IO::AIO::min_parallel 8;
		3656
		3657	undef $Coro::AIO::WATCHER;
		3658	IO::AIO::max_poll_time $TICK * 0.1;
		3659	$AIO_POLL_WATCHER = Event->io (
		3660	reentrant => 0,
		3661	data => WF_AUTOCANCEL,
		3662	fd => IO::AIO::poll_fileno,
		3663	poll => 'r',
		3664	prio => 0,
		3665	cb => \&IO::AIO::poll_cb,
		3666	);
		3667	}
		3668
		3669	my $_log_backtrace;
		3670
		3671	sub _log_backtrace {
		3672	my ($msg, @addr) = @_;
		3673
		3674	$msg =~ s/\n//;
		3675
		3676	# limit the # of concurrent backtraces
		3677	if ($_log_backtrace < 2) {
		3678	++$_log_backtrace;
		3679	async {
		3680	$Coro::current->{desc} = "abt $msg";
		3681
		3682	my @bt = fork_call {
		3683	@addr = map { sprintf "%x", $_ } @addr;
		3684	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3685	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3686	or die "addr2line: $!";
		3687
		3688	my @funcs;
		3689	my @res = <$fh>;
		3690	chomp for @res;
		3691	while (@res) {
		3692	my ($func, $line) = splice @res, 0, 2, ();
		3693	push @funcs, "[$func] $line";
		3694	}
		3695
		3696	@funcs
		3697	};
		3698
		3699	LOG llevInfo, "[ABT] $msg\n";
		3700	LOG llevInfo, "[ABT] $_\n" for @bt;
		3701	--$_log_backtrace;
2218	})->();	3702	};
		3703	} else {
		3704	LOG llevInfo, "[ABT] $msg\n";
		3705	LOG llevInfo, "[ABT] [suppressed]\n";
2219	},	3706	}
2220	);	3707	}
		3708
		3709	# load additional modules
		3710	use cf::pod;
2221		3711
2222	END { cf::emergency_save }	3712	END { cf::emergency_save }
2223		3713
2224	1	3714	1
2225		3715

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