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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.87 by root, Thu Dec 14 22:45:40 2006 UTC vs.
Revision 1.329 by root, Fri Aug 10 05:38:16 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
10	use IO::AIO ();	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
11	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
12	use Time::HiRes;	32	use Time::HiRes;
13	use Event;	33	use Compress::LZF;
		34	use Digest::MD5 ();
		35
		36	# configure various modules to our taste
		37	#
		38	$Storable::canonical = 1; # reduce rsync transfers
		39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		40	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		41
14	$Event::Eval = 1; # no idea why this is required, but it is	42	$Event::Eval = 1; # no idea why this is required, but it is
15		43
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	45	$YAML::Syck::ImplicitUnicode = 1;
18		46
19	use strict;	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		48
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		50
23	our %COMMAND = ();	51	our %COMMAND = ();
24	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
26		59
27	_init_vars;	60	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	61	our @EVENT;
30	our $LIBDIR = maps_directory "perl";
31		62
32	our $TICK = MAX_TIME * 1e-6;	63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
		74
		75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	79	our $NEXT_TICK;
		80	our $NOW;
		81	our $USE_FSYNC = 1; # use fsync to write maps - default off
		82
		83	our $BDB_POLL_WATCHER;
		84	our $DB_ENV;
35		85
36	our %CFG;	86	our %CFG;
37		87
38	our $UPTIME; $UPTIME ||= time;	88	our $UPTIME; $UPTIME ||= time;
		89	our $RUNTIME;
		90
		91	our %PLAYER; # all users
		92	our %MAP; # all maps
		93	our $LINK_MAP; # the special {link} map, which is always available
		94
		95	# used to convert map paths into valid unix filenames by replacing / by ∕
		96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
		101
		102	binmode STDOUT;
		103	binmode STDERR;
		104
		105	# read virtual server time, if available
		106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		107	open my $fh, "<", "$LOCALDIR/runtime"
		108	or die "unable to read runtime file: $!";
		109	$RUNTIME = <$fh> + 0.;
		110	}
		111
		112	mkdir $_
		113	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		114
		115	our $EMERGENCY_POSITION;
		116
		117	sub cf::map::normalise;
39		118
40	#############################################################################	119	#############################################################################
41		120
42	=head2 GLOBAL VARIABLES	121	=head2 GLOBAL VARIABLES
43		122
…		…
45		124
46	=item $cf::UPTIME	125	=item $cf::UPTIME
47		126
48	The timestamp of the server start (so not actually an uptime).	127	The timestamp of the server start (so not actually an uptime).
49		128
50	=item $cf::LIBDIR	129	=item $cf::RUNTIME
51		130
52	The perl library directory, where extensions and cf-specific modules can	131	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	132	every server tick.
		133
		134	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		135	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		136	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		137
		138	Various directories - "/etc", read-only install directory, perl-library
		139	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		140	unique-items directory, player file directory, random maps directory and
		141	database environment.
		142
		143	=item $cf::NOW
		144
		145	The time of the last (current) server tick.
54		146
55	=item $cf::TICK	147	=item $cf::TICK
56		148
57	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
58		160
59	=item %cf::CFG	161	=item %cf::CFG
60		162
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	164	from wherever your confdir points to.
		165
		166	=item cf::wait_for_tick, cf::wait_for_tick_begin
		167
		168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		169	returns directly I<after> the tick processing (and consequently, can only wake one process
		170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
63		177
64	=back	178	=back
65		179
66	=cut	180	=cut
67		181
68	BEGIN {	182	BEGIN {
69	*CORE::GLOBAL::warn = sub {	183	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	184	my $msg = join "", @_;
		185
71	$msg .= "\n"	186	$msg .= "\n"
72	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
73		188
74	print STDERR "cfperl: $msg";	189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		190
		191	utf8::encode $msg;
75	LOG llevError, "cfperl: $msg";	192	LOG llevError, $msg;
76	};	193	};
77	}	194	}
78		195
		196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		203
81	# we bless all objects into (empty) derived classes to force a method lookup	204	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	205	# within the Safe compartment.
83	for my $pkg (qw(	206	for my $pkg (qw(
		207	cf::global cf::attachable
84	cf::object cf::object::player	208	cf::object cf::object::player
85	cf::client_socket cf::player	209	cf::client cf::player
86	cf::arch cf::living	210	cf::arch cf::living
87	cf::map cf::party cf::region	211	cf::map cf::party cf::region
88	)) {	212	)) {
89	no strict 'refs';	213	no strict 'refs';
90	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	214	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
…		…
92		216
93	$Event::DIED = sub {	217	$Event::DIED = sub {
94	warn "error in event callback: @_";	218	warn "error in event callback: @_";
95	};	219	};
96		220
97	my %ext_pkg;	221	#############################################################################
98	my @exts;
99	my @hook;
100		222
101	=head2 UTILITY FUNCTIONS	223	=head2 UTILITY FUNCTIONS
102		224
103	=over 4	225	=over 4
104		226
105	=cut	227	=item dumpval $ref
106		228
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	229	=cut
		230
		231	sub dumpval {
		232	eval {
		233	local $SIG{__DIE__};
		234	my $d;
		235	if (1) {
		236	$d = new Data::Dumper([$_[0]], ["*var"]);
		237	$d->Terse(1);
		238	$d->Indent(2);
		239	$d->Quotekeys(0);
		240	$d->Useqq(1);
		241	#$d->Bless(...);
		242	$d->Seen($_[1]) if @_ > 1;
		243	$d = $d->Dump();
		244	}
		245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		246	$d
		247	} || "[unable to dump $_[0]: '$@']";
		248	}
108		249
109	=item $ref = cf::from_json $json	250	=item $ref = cf::from_json $json
110		251
111	Converts a JSON string into the corresponding perl data structure.	252	Converts a JSON string into the corresponding perl data structure.
112		253
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	254	=item $json = cf::to_json $ref
121		255
122	Converts a perl data structure into its JSON representation.	256	Converts a perl data structure into its JSON representation.
123		257
124	=cut	258	=cut
125		259
126	sub to_json($) {	260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	261
128	JSON::Syck::Dump $_[0]	262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
		264
		265	=item cf::lock_wait $string
		266
		267	Wait until the given lock is available. See cf::lock_acquire.
		268
		269	=item my $lock = cf::lock_acquire $string
		270
		271	Wait until the given lock is available and then acquires it and returns
		272	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		273	for example when the coroutine gets canceled), the lock is automatically
		274	returned.
		275
		276	Lock names should begin with a unique identifier (for example, cf::map::find
		277	uses map_find and cf::map::load uses map_load).
		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
		283	=cut
		284
		285	our %LOCK;
		286
		287	sub lock_wait($) {
		288	my ($key) = @_;
		289
		290	# wait for lock, if any
		291	while ($LOCK{$key}) {
		292	push @{ $LOCK{$key} }, $Coro::current;
		293	Coro::schedule;
		294	}
		295	}
		296
		297	sub lock_acquire($) {
		298	my ($key) = @_;
		299
		300	# wait, to be sure we are not locked
		301	lock_wait $key;
		302
		303	$LOCK{$key} = [];
		304
		305	Coro::guard {
		306	# wake up all waiters, to be on the safe side
		307	$_->ready for @{ delete $LOCK{$key} };
		308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
		315	}
		316
		317	sub freeze_mainloop {
		318	return unless $TICK_WATCHER->is_active;
		319
		320	my $guard = Coro::guard {
		321	$TICK_WATCHER->start;
		322	};
		323	$TICK_WATCHER->stop;
		324	$guard
		325	}
		326
		327	=item cf::get_slot $time[, $priority[, $name]]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	The optional C<$name> can be used to identify the job to run. It might be
		334	used for statistical purposes and should identify the same time-class.
		335
		336	Useful for short background jobs.
		337
		338	=cut
		339
		340	our @SLOT_QUEUE;
		341	our $SLOT_QUEUE;
		342
		343	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		344	$SLOT_QUEUE = Coro::async {
		345	my $signal = new Coro::Signal;
		346
		347	while () {
		348	next_job:
		349	my $avail = cf::till_tick;
		350	if ($avail > 0.01) {
		351	for (0 .. $#SLOT_QUEUE) {
		352	if ($SLOT_QUEUE[$_][0] < $avail) {
		353	my $job = splice @SLOT_QUEUE, $_, 1, ();
		354	$job->[2]->send;
		355	Coro::cede;
		356	goto next_job;
		357	}
		358	}
		359	}
		360
		361	if (@SLOT_QUEUE) {
		362	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		363	push @cf::WAIT_FOR_TICK, $signal;
		364	$signal->wait;
		365	} else {
		366	Coro::schedule;
		367	}
		368	}
		369	};
		370
		371	sub get_slot($;$$) {
		372	my ($time, $pri, $name) = @_;
		373
		374	$time = $TICK * .6 if $time > $TICK * .6;
		375	my $sig = new Coro::Signal;
		376
		377	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		378	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		379	$SLOT_QUEUE->ready;
		380	$sig->wait;
		381	}
		382
		383	=item cf::async { BLOCK }
		384
		385	Currently the same as Coro::async_pool, meaning you cannot use
		386	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		387	thing you are allowed to do is call C<prio> on it.
		388
		389	=cut
		390
		391	BEGIN { *async = \&Coro::async_pool }
		392
		393	=item cf::sync_job { BLOCK }
		394
		395	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		396	is always able to handle events or runnable, as Crossfire TRT is only
		397	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		398	acceptable.
		399
		400	If it must be done, put the blocking parts into C<sync_job>. This will run
		401	the given BLOCK in another coroutine while waiting for the result. The
		402	server will be frozen during this time, so the block should either finish
		403	fast or be very important.
		404
		405	=cut
		406
		407	sub sync_job(&) {
		408	my ($job) = @_;
		409
		410	if ($Coro::current == $Coro::main) {
		411	my $time = Event::time;
		412
		413	# this is the main coro, too bad, we have to block
		414	# till the operation succeeds, freezing the server :/
		415
		416	# TODO: use suspend/resume instead
		417	# (but this is cancel-safe)
		418	my $freeze_guard = freeze_mainloop;
		419
		420	my $busy = 1;
		421	my @res;
		422
		423	(async {
		424	@res = eval { $job->() };
		425	warn $@ if $@;
		426	undef $busy;
		427	})->prio (Coro::PRIO_MAX);
		428
		429	while ($busy) {
		430	Coro::cede or Event::one_event;
		431	}
		432
		433	$time = Event::time - $time;
		434
		435	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		436	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		437
		438	$tick_start += $time; # do not account sync jobs to server load
		439
		440	wantarray ? @res : $res[0]
		441	} else {
		442	# we are in another coroutine, how wonderful, everything just works
		443
		444	$job->()
		445	}
		446	}
		447
		448	=item $coro = cf::async_ext { BLOCK }
		449
		450	Like async, but this coro is automatically being canceled when the
		451	extension calling this is being unloaded.
		452
		453	=cut
		454
		455	sub async_ext(&) {
		456	my $cb = shift;
		457
		458	my $coro = &Coro::async ($cb);
		459
		460	$coro->on_destroy (sub {
		461	delete $EXT_CORO{$coro+0};
		462	});
		463	$EXT_CORO{$coro+0} = $coro;
		464
		465	$coro
		466	}
		467
		468	=item fork_call { }, $args
		469
		470	Executes the given code block with the given arguments in a seperate
		471	process, returning the results. Everything must be serialisable with
		472	Coro::Storable. May, of course, block. Note that the executed sub may
		473	never block itself or use any form of Event handling.
		474
		475	=cut
		476
		477	sub _store_scalar {
		478	open my $fh, ">", \my $buf
		479	or die "fork_call: cannot open fh-to-buf in child : $!";
		480	Storable::store_fd $_[0], $fh;
		481	close $fh;
		482
		483	$buf
		484	}
		485
		486	sub fork_call(&@) {
		487	my ($cb, @args) = @_;
		488
		489	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		490	# or die "socketpair: $!";
		491	pipe my $fh1, my $fh2
		492	or die "pipe: $!";
		493
		494	if (my $pid = fork) {
		495	close $fh2;
		496
		497	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		498	warn "pst<$res>" unless $res =~ /^pst/;
		499	$res = Coro::Storable::thaw $res;
		500
		501	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		502
		503	Carp::confess $$res unless "ARRAY" eq ref $res;
		504
		505	return wantarray ? @$res : $res->[-1];
		506	} else {
		507	reset_signals;
		508	local $SIG{__WARN__};
		509	local $SIG{__DIE__};
		510	# just in case, this hack effectively disables event
		511	# in the child. cleaner and slower would be canceling all watchers,
		512	# but this works for the time being.
		513	local $Coro::idle;
		514	$Coro::current->prio (Coro::PRIO_MAX);
		515
		516	eval {
		517	close $fh1;
		518
		519	my @res = eval { $cb->(@args) };
		520
		521	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		522	close $fh2;
		523	};
		524
		525	warn $@ if $@;
		526	_exit 0;
		527	}
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=cut
		540
		541	our $DB;
		542
		543	sub db_init {
		544	unless ($DB) {
		545	$DB = BDB::db_create $DB_ENV;
		546
		547	cf::sync_job {
		548	eval {
		549	$DB->set_flags (BDB::CHKSUM);
		550
		551	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		552	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		553	cf::cleanup "db_open(db): $!" if $!;
		554	};
		555	cf::cleanup "db_open(db): $@" if $@;
		556	};
		557	}
		558	}
		559
		560	sub db_get($$) {
		561	my $key = "$_[0]/$_[1]";
		562
		563	cf::sync_job {
		564	BDB::db_get $DB, undef, $key, my $data;
		565
		566	$! ? ()
		567	: $data
		568	}
		569	}
		570
		571	sub db_put($$$) {
		572	BDB::dbreq_pri 4;
		573	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		574	}
		575
		576	=item cf::cache $id => [$paths...], $processversion => $process
		577
		578	Generic caching function that returns the value of the resource $id,
		579	caching and regenerating as required.
		580
		581	This function can block.
		582
		583	=cut
		584
		585	sub cache {
		586	my ($id, $src, $processversion, $process) = @_;
		587
		588	my $meta =
		589	join "\x00",
		590	$processversion,
		591	map {
		592	aio_stat $_
		593	and Carp::croak "$_: $!";
		594
		595	($_, (stat _)[7,9])
		596	} @$src;
		597
		598	my $dbmeta = db_get cache => "$id/meta";
		599	if ($dbmeta ne $meta) {
		600	# changed, we may need to process
		601
		602	my @data;
		603	my $md5;
		604
		605	for (0 .. $#$src) {
		606	0 <= aio_load $src->[$_], $data[$_]
		607	or Carp::croak "$src->[$_]: $!";
		608	}
		609
		610	# if processing is expensive, check
		611	# checksum first
		612	if (1) {
		613	$md5 =
		614	join "\x00",
		615	$processversion,
		616	map {
		617	Coro::cede;
		618	($src->[$_], Digest::MD5::md5_hex $data[$_])
		619	} 0.. $#$src;
		620
		621
		622	my $dbmd5 = db_get cache => "$id/md5";
		623	if ($dbmd5 eq $md5) {
		624	db_put cache => "$id/meta", $meta;
		625
		626	return db_get cache => "$id/data";
		627	}
		628	}
		629
		630	my $t1 = Time::HiRes::time;
		631	my $data = $process->(\@data);
		632	my $t2 = Time::HiRes::time;
		633
		634	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		635
		636	db_put cache => "$id/data", $data;
		637	db_put cache => "$id/md5" , $md5;
		638	db_put cache => "$id/meta", $meta;
		639
		640	return $data;
		641	}
		642
		643	db_get cache => "$id/data"
		644	}
		645
		646	=item cf::datalog type => key => value, ...
		647
		648	Log a datalog packet of the given type with the given key-value pairs.
		649
		650	=cut
		651
		652	sub datalog($@) {
		653	my ($type, %kv) = @_;
		654	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	655	}
130		656
131	=back	657	=back
132		658
133	=cut	659	=cut
134		660
135	#############################################################################	661	#############################################################################
136		662
137	=head2 EVENTS AND OBJECT ATTACHMENTS	663	=head2 ATTACHABLE OBJECTS
		664
		665	Many objects in crossfire are so-called attachable objects. That means you can
		666	attach callbacks/event handlers (a collection of which is called an "attachment")
		667	to it. All such attachable objects support the following methods.
		668
		669	In the following description, CLASS can be any of C<global>, C<object>
		670	C<player>, C<client> or C<map> (i.e. the attachable objects in
		671	Crossfire TRT).
138		672
139	=over 4	673	=over 4
140		674
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)	675	=item $attachable->attach ($attachment, key => $value...)
154		676
155	=item $map->detach ($attachment)	677	=item $attachable->detach ($attachment)
156		678
157	Attach/detach a pre-registered attachment to a map.	679	Attach/detach a pre-registered attachment to a specific object and give it
		680	the specified key/value pairs as arguments.
158		681
159	=item $bool = $object->attached ($name)	682	Example, attach a minesweeper attachment to the given object, making it a
		683	10x10 minesweeper game:
160		684
161	=item $bool = $player->attached ($name)	685	$obj->attach (minesweeper => width => 10, height => 10);
162		686
163	=item $bool = $map->attached ($name)	687	=item $bool = $attachable->attached ($name)
164		688
165	Checks wether the named attachment is currently attached to the object.	689	Checks wether the named attachment is currently attached to the object.
166		690
167	=item cf::attach_global ...	691	=item cf::CLASS->attach ...
168		692
169	Attach handlers for global events.	693	=item cf::CLASS->detach ...
170		694
171	This and all following C<attach_*>-functions expect any number of the	695	Define an anonymous attachment and attach it to all objects of the given
172	following handler/hook descriptions:	696	CLASS. See the next function for an explanation of its arguments.
		697
		698	You can attach to global events by using the C<cf::global> class.
		699
		700	Example, log all player logins:
		701
		702	cf::player->attach (
		703	on_login => sub {
		704	my ($pl) = @_;
		705	...
		706	},
		707	);
		708
		709	Example, attach to the jeweler skill:
		710
		711	cf::object->attach (
		712	type => cf::SKILL,
		713	subtype => cf::SK_JEWELER,
		714	on_use_skill => sub {
		715	my ($sk, $ob, $part, $dir, $msg) = @_;
		716	...
		717	},
		718	);
		719
		720	=item cf::CLASS::attachment $name, ...
		721
		722	Register an attachment by C<$name> through which attachable objects of the
		723	given CLASS can refer to this attachment.
		724
		725	Some classes such as crossfire maps and objects can specify attachments
		726	that are attached at load/instantiate time, thus the need for a name.
		727
		728	These calls expect any number of the following handler/hook descriptions:
173		729
174	=over 4	730	=over 4
175		731
176	=item prio => $number	732	=item prio => $number
177		733
…		…
179	by another C<prio> setting). Lower priority handlers get executed	735	by another C<prio> setting). Lower priority handlers get executed
180	earlier. The default priority is C<0>, and many built-in handlers are	736	earlier. The default priority is C<0>, and many built-in handlers are
181	registered at priority C<-1000>, so lower priorities should not be used	737	registered at priority C<-1000>, so lower priorities should not be used
182	unless you know what you are doing.	738	unless you know what you are doing.
183		739
		740	=item type => $type
		741
		742	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		743	given type of objects only (the additional parameter C<subtype> can be
		744	used to further limit to the given subtype).
		745
184	=item on_I<event> => \&cb	746	=item on_I<event> => \&cb
185		747
186	Call the given code reference whenever the named event happens (event is	748	Call the given code reference whenever the named event happens (event is
187	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	749	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
188	handlers are recognised generally depends on the type of object these	750	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	759	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	760	object/class are recognised.
199		761
200	=back	762	=back
201		763
202	=item cf::attach_to_type $object_type, $subtype, ...	764	Example, define an attachment called "sockpuppet" that calls the given
		765	event handler when a monster attacks:
203		766
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	767	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	768	on_skill_attack => sub {
206	type.	769	my ($self, $victim) = @_;
207		770	...
208	=item cf::attach_to_objects ...
209
210	Attach handlers to all objects. Do not use this except for debugging or
211	very rare events, as handlers are (obviously) called for I<all> objects in
212	the game.
213
214	=item cf::attach_to_players ...
215
216	Attach handlers to all players.
217
218	=item cf::attach_to_maps ...
219
220	Attach handlers to all maps.
221
222	=item cf:register_attachment $name, ...
223
224	Register an attachment by name through which objects can refer to this
225	attachment.
226
227	=item cf:register_player_attachment $name, ...
228
229	Register an attachment by name through which players can refer to this
230	attachment.
231
232	=item cf:register_map_attachment $name, ...
233
234	Register an attachment by name through which maps can refer to this
235	attachment.
236
237	=cut
238
239	# the following variables are defined in .xs and must not be re-created
240	our @CB_GLOBAL = (); # registry for all global events
241	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
242	our @CB_PLAYER = ();
243	our @CB_TYPE = (); # registry for type (cf-object class) based events
244	our @CB_MAP = ();
245
246	my %attachment;
247
248	sub _attach_cb($\%$$$) {
249	my ($registry, $undo, $event, $prio, $cb) = @_;
250
251	use sort 'stable';
252
253	$cb = [$prio, $cb];
254
255	@{$registry->[$event]} = sort
256	{ $a->[0] cmp $b->[0] }
257	@{$registry->[$event] || []}, $cb;
258
259	push @{$undo->{cb}}, [$event, $cb];
260	}
261
262	# attach handles attaching event callbacks
263	# the only thing the caller has to do is pass the correct
264	# registry (== where the callback attaches to).
265	sub _attach(\@$@) {
266	my ($registry, $klass, @arg) = @_;
267
268	my $prio = 0;
269
270	my %undo = (
271	registry => $registry,
272	cb => [],
273	);
274
275	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
276
277	while (@arg) {
278	my $type = shift @arg;
279
280	if ($type eq "prio") {
281	$prio = shift @arg;
282
283	} elsif ($type eq "package") {
284	my $pkg = shift @arg;
285
286	while (my ($name, $id) = each %cb_id) {
287	if (my $cb = $pkg->can ($name)) {
288	_attach_cb $registry, %undo, $id, $prio, $cb;
289	}
290	}	771	}
291
292	} elsif (exists $cb_id{$type}) {
293	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
294
295	} elsif (ref $type) {
296	warn "attaching objects not supported, ignoring.\n";
297
298	} else {
299	shift @arg;
300	warn "attach argument '$type' not supported, ignoring.\n";
301	}
302	}
303
304	\%undo
305	}
306
307	sub _attach_attachment {
308	my ($obj, $name, %arg) = @_;
309
310	return if exists $obj->{_attachment}{$name};
311
312	my $res;
313
314	if (my $attach = $attachment{$name}) {
315	my $registry = $obj->registry;
316
317	for (@$attach) {
318	my ($klass, @attach) = @$_;
319	$res = _attach @$registry, $klass, @attach;
320	}
321
322	$obj->{$name} = \%arg;
323	} else {
324	warn "object uses attachment '$name' that is not available, postponing.\n";
325	}
326
327	$obj->{_attachment}{$name} = undef;
328
329	$res->{attachment} = $name;
330	$res
331	}
332
333	*cf::object::attach =
334	*cf::player::attach =
335	*cf::map::attach = sub {
336	my ($obj, $name, %arg) = @_;
337
338	_attach_attachment $obj, $name, %arg;
339	};
340
341	# all those should be optimised
342	*cf::object::detach =
343	*cf::player::detach =
344	*cf::map::detach = sub {
345	my ($obj, $name) = @_;
346
347	delete $obj->{_attachment}{$name};
348	reattach ($obj);
349	};
350
351	*cf::object::attached =
352	*cf::player::attached =
353	*cf::map::attached = sub {
354	my ($obj, $name) = @_;
355
356	exists $obj->{_attachment}{$name}
357	};
358
359	sub attach_global {
360	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
361	}
362
363	sub attach_to_type {
364	my $type = shift;
365	my $subtype = shift;
366
367	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
368	}
369
370	sub attach_to_objects {
371	_attach @CB_OBJECT, KLASS_OBJECT, @_
372	}
373
374	sub attach_to_players {
375	_attach @CB_PLAYER, KLASS_PLAYER, @_
376	}
377
378	sub attach_to_maps {
379	_attach @CB_MAP, KLASS_MAP, @_
380	}
381
382	sub register_attachment {
383	my $name = shift;
384
385	$attachment{$name} = [[KLASS_OBJECT, @_]];
386	}
387
388	sub register_player_attachment {
389	my $name = shift;
390
391	$attachment{$name} = [[KLASS_PLAYER, @_]];
392	}
393
394	sub register_map_attachment {
395	my $name = shift;
396
397	$attachment{$name} = [[KLASS_MAP, @_]];
398	}
399
400	our $override;
401	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
402
403	sub override {
404	$override = 1;
405	@invoke_results = ();
406	}
407
408	sub do_invoke {
409	my $event = shift;
410	my $callbacks = shift;
411
412	@invoke_results = ();
413
414	local $override;
415
416	for (@$callbacks) {
417	eval { &{$_->[1]} };
418
419	if ($@) {
420	warn "$@";
421	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
422	override;
423	}
424
425	return 1 if $override;
426	}
427
428	0	772	}
429	}
430		773
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	774	=item $attachable->valid
432
433	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
434
435	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
436
437	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
438
439	Generate a global/object/player/map-specific event with the given arguments.
440
441	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
442	removed in future versions), and there is no public API to access override
443	results (if you must, access C<@cf::invoke_results> directly).
444
445	=back
446
447	=cut
448
449	#############################################################################
450
451	=head2 METHODS VALID FOR ALL CORE OBJECTS
452
453	=over 4
454
455	=item $object->valid, $player->valid, $map->valid
456		775
457	Just because you have a perl object does not mean that the corresponding	776	Just because you have a perl object does not mean that the corresponding
458	C-level object still exists. If you try to access an object that has no	777	C-level object still exists. If you try to access an object that has no
459	valid C counterpart anymore you get an exception at runtime. This method	778	valid C counterpart anymore you get an exception at runtime. This method
460	can be used to test for existence of the C object part without causing an	779	can be used to test for existence of the C object part without causing an
461	exception.	780	exception.
462		781
		782	=cut
		783
		784	# the following variables are defined in .xs and must not be re-created
		785	our @CB_GLOBAL = (); # registry for all global events
		786	our @CB_ATTACHABLE = (); # registry for all attachables
		787	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		788	our @CB_PLAYER = ();
		789	our @CB_CLIENT = ();
		790	our @CB_TYPE = (); # registry for type (cf-object class) based events
		791	our @CB_MAP = ();
		792
		793	my %attachment;
		794
		795	sub cf::attachable::thawer_merge {
		796	# simply override everything except _meta
		797	local $_[0]{_meta};
		798	%{$_[0]} = %{$_[1]};
		799	}
		800
		801	sub _attach_cb($$$$) {
		802	my ($registry, $event, $prio, $cb) = @_;
		803
		804	use sort 'stable';
		805
		806	$cb = [$prio, $cb];
		807
		808	@{$registry->[$event]} = sort
		809	{ $a->[0] cmp $b->[0] }
		810	@{$registry->[$event] || []}, $cb;
		811	}
		812
		813	# hack
		814	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		815
		816	# attach handles attaching event callbacks
		817	# the only thing the caller has to do is pass the correct
		818	# registry (== where the callback attaches to).
		819	sub _attach {
		820	my ($registry, $klass, @arg) = @_;
		821
		822	my $object_type;
		823	my $prio = 0;
		824	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		825
		826	#TODO: get rid of this hack
		827	if ($attachable_klass{$klass}) {
		828	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		829	}
		830
		831	while (@arg) {
		832	my $type = shift @arg;
		833
		834	if ($type eq "prio") {
		835	$prio = shift @arg;
		836
		837	} elsif ($type eq "type") {
		838	$object_type = shift @arg;
		839	$registry = $CB_TYPE[$object_type] ||= [];
		840
		841	} elsif ($type eq "subtype") {
		842	defined $object_type or Carp::croak "subtype specified without type";
		843	my $object_subtype = shift @arg;
		844	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		845
		846	} elsif ($type eq "package") {
		847	my $pkg = shift @arg;
		848
		849	while (my ($name, $id) = each %cb_id) {
		850	if (my $cb = $pkg->can ($name)) {
		851	_attach_cb $registry, $id, $prio, $cb;
		852	}
		853	}
		854
		855	} elsif (exists $cb_id{$type}) {
		856	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		857
		858	} elsif (ref $type) {
		859	warn "attaching objects not supported, ignoring.\n";
		860
		861	} else {
		862	shift @arg;
		863	warn "attach argument '$type' not supported, ignoring.\n";
		864	}
		865	}
		866	}
		867
		868	sub _object_attach {
		869	my ($obj, $name, %arg) = @_;
		870
		871	return if exists $obj->{_attachment}{$name};
		872
		873	if (my $attach = $attachment{$name}) {
		874	my $registry = $obj->registry;
		875
		876	for (@$attach) {
		877	my ($klass, @attach) = @$_;
		878	_attach $registry, $klass, @attach;
		879	}
		880
		881	$obj->{$name} = \%arg;
		882	} else {
		883	warn "object uses attachment '$name' which is not available, postponing.\n";
		884	}
		885
		886	$obj->{_attachment}{$name} = undef;
		887	}
		888
		889	sub cf::attachable::attach {
		890	if (ref $_[0]) {
		891	_object_attach @_;
		892	} else {
		893	_attach shift->_attach_registry, @_;
		894	}
		895	_recalc_want;
		896	};
		897
		898	# all those should be optimised
		899	sub cf::attachable::detach {
		900	my ($obj, $name) = @_;
		901
		902	if (ref $obj) {
		903	delete $obj->{_attachment}{$name};
		904	reattach ($obj);
		905	} else {
		906	Carp::croak "cannot, currently, detach class attachments";
		907	}
		908	_recalc_want;
		909	};
		910
		911	sub cf::attachable::attached {
		912	my ($obj, $name) = @_;
		913
		914	exists $obj->{_attachment}{$name}
		915	}
		916
		917	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		918	eval "#line " . __LINE__ . " 'cf.pm'
		919	sub cf::\L$klass\E::_attach_registry {
		920	(\\\@CB_$klass, KLASS_$klass)
		921	}
		922
		923	sub cf::\L$klass\E::attachment {
		924	my \$name = shift;
		925
		926	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		927	}
		928	";
		929	die if $@;
		930	}
		931
		932	our $override;
		933	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		934
		935	sub override {
		936	$override = 1;
		937	@INVOKE_RESULTS = (@_);
		938	}
		939
		940	sub do_invoke {
		941	my $event = shift;
		942	my $callbacks = shift;
		943
		944	@INVOKE_RESULTS = ();
		945
		946	local $override;
		947
		948	for (@$callbacks) {
		949	eval { &{$_->[1]} };
		950
		951	if ($@) {
		952	warn "$@";
		953	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		954	override;
		955	}
		956
		957	return 1 if $override;
		958	}
		959
		960	0
		961	}
		962
		963	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		964
		965	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		966
		967	Generate an object-specific event with the given arguments.
		968
		969	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		970	removed in future versions), and there is no public API to access override
		971	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		972
463	=back	973	=back
464		974
465	=cut	975	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		976
471	#############################################################################	977	#############################################################################
472	# object support	978	# object support
		979	#
473		980
474	sub instantiate {	981	sub _can_merge {
475	my ($obj, $data) = @_;	982	my ($ob1, $ob2) = @_;
476		983
477	$data = from_json $data;	984	local $Storable::canonical = 1;
		985	my $fob1 = Storable::freeze $ob1;
		986	my $fob2 = Storable::freeze $ob2;
478		987
479	for (@$data) {	988	$fob1 eq $fob2
480	my ($name, $args) = @$_;
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}	989	}
485		990
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	991	sub reattach {
		992	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	993	my ($obj) = @_;
		994
		995	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		996
489	my $registry = $obj->registry;	997	my $registry = $obj->registry;
490		998
491	@$registry = ();	999	@$registry = ();
492		1000
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1001	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		1002
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	1003	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	1004	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	1005	for (@$attach) {
498	my ($klass, @attach) = @$_;	1006	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	1007	_attach $registry, $klass, @attach;
500	}	1008	}
501	} else {	1009	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	1010	warn "object uses attachment '$name' that is not available, postponing.\n";
503	}	1011	}
504	}	1012	}
505	}	1013	}
506		1014
507	sub object_freezer_save {	1015	cf::attachable->attach (
508	my ($filename, $rdata, $objs) = @_;
509
510	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;
513
514	if (open my $fh, ">:raw", "$filename~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
522	close $fh;
523	rename "$filename.pst~", "$filename.pst";
524	} else {
525	unlink "$filename.pst";
526	}
527
528	rename "$filename~", $filename;
529	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;
534	unlink "$filename.pst";
535	}
536	}
537
538	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;
540
541	use Data::Dumper;
542
543	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	1016	prio => -1000000,
		1017	on_instantiate => sub {
		1018	my ($obj, $data) = @_;
		1019
		1020	$data = from_json $data;
		1021
		1022	for (@$data) {
		1023	my ($name, $args) = @$_;
		1024
		1025	$obj->attach ($name, %{$args || {} });
		1026	}
		1027	},
		1028	on_reattach => \&reattach,
567	on_clone => sub {	1029	on_clone => sub {
568	my ($src, $dst) = @_;	1030	my ($src, $dst) = @_;
569		1031
570	@{$dst->registry} = @{$src->registry};	1032	@{$dst->registry} = @{$src->registry};
571		1033
572	%$dst = %$src;	1034	%$dst = %$src;
573		1035
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	1036	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	1037	if exists $src->{_attachment};
576	},	1038	},
577	;	1039	);
		1040
		1041	sub object_freezer_save {
		1042	my ($filename, $rdata, $objs) = @_;
		1043
		1044	sync_job {
		1045	if (length $$rdata) {
		1046	warn sprintf "saving %s (%d,%d)\n",
		1047	$filename, length $$rdata, scalar @$objs;
		1048
		1049	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1050	chmod SAVE_MODE, $fh;
		1051	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1052	aio_fsync $fh if $cf::USE_FSYNC;
		1053	close $fh;
		1054
		1055	if (@$objs) {
		1056	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1057	chmod SAVE_MODE, $fh;
		1058	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1059	aio_write $fh, 0, (length $data), $data, 0;
		1060	aio_fsync $fh if $cf::USE_FSYNC;
		1061	close $fh;
		1062	aio_rename "$filename.pst~", "$filename.pst";
		1063	}
		1064	} else {
		1065	aio_unlink "$filename.pst";
		1066	}
		1067
		1068	aio_rename "$filename~", $filename;
		1069	} else {
		1070	warn "FATAL: $filename~: $!\n";
		1071	}
		1072	} else {
		1073	aio_unlink $filename;
		1074	aio_unlink "$filename.pst";
		1075	}
		1076	}
		1077	}
		1078
		1079	sub object_freezer_as_string {
		1080	my ($rdata, $objs) = @_;
		1081
		1082	use Data::Dumper;
		1083
		1084	$$rdata . Dumper $objs
		1085	}
		1086
		1087	sub object_thawer_load {
		1088	my ($filename) = @_;
		1089
		1090	my ($data, $av);
		1091
		1092	(aio_load $filename, $data) >= 0
		1093	or return;
		1094
		1095	unless (aio_stat "$filename.pst") {
		1096	(aio_load "$filename.pst", $av) >= 0
		1097	or return;
		1098	$av = eval { (Storable::thaw $av)->{objs} };
		1099	}
		1100
		1101	warn sprintf "loading %s (%d)\n",
		1102	$filename, length $data, scalar @{$av || []};
		1103	return ($data, $av);
		1104	}
		1105
		1106	=head2 COMMAND CALLBACKS
		1107
		1108	=over 4
		1109
		1110	=cut
578		1111
579	#############################################################################	1112	#############################################################################
580	# command handling &c	1113	# command handling &c
581		1114
582	=item cf::register_command $name => \&callback($ob,$args);	1115	=item cf::register_command $name => \&callback($ob,$args);
…		…
595	push @{ $COMMAND{$name} }, [$caller, $cb];	1128	push @{ $COMMAND{$name} }, [$caller, $cb];
596	}	1129	}
597		1130
598	=item cf::register_extcmd $name => \&callback($pl,$packet);	1131	=item cf::register_extcmd $name => \&callback($pl,$packet);
599		1132
600	Register a callbackf ro execution when the client sends an extcmd packet.	1133	Register a callback for execution when the client sends an (synchronous)
		1134	extcmd packet. Ext commands will be processed in the order they are
		1135	received by the server, like other user commands. The first argument is
		1136	the logged-in player. Ext commands can only be processed after a player
		1137	has logged in successfully.
601		1138
602	If the callback returns something, it is sent back as if reply was being	1139	If the callback returns something, it is sent back as if reply was being
603	called.	1140	called.
604		1141
		1142	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1143
		1144	Register a callback for execution when the client sends an (asynchronous)
		1145	exticmd packet. Exti commands are processed by the server as soon as they
		1146	are received, i.e. out of order w.r.t. other commands. The first argument
		1147	is a client socket. Exti commands can be received anytime, even before
		1148	log-in.
		1149
		1150	If the callback returns something, it is sent back as if reply was being
		1151	called.
		1152
605	=cut	1153	=cut
606		1154
607	sub register_extcmd {	1155	sub register_extcmd {
608	my ($name, $cb) = @_;	1156	my ($name, $cb) = @_;
609		1157
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	1158	$EXTCMD{$name} = $cb;
614	}	1159	}
615		1160
616	attach_to_players	1161	sub register_exticmd {
		1162	my ($name, $cb) = @_;
		1163
		1164	$EXTICMD{$name} = $cb;
		1165	}
		1166
		1167	cf::player->attach (
617	on_command => sub {	1168	on_command => sub {
618	my ($pl, $name, $params) = @_;	1169	my ($pl, $name, $params) = @_;
619		1170
620	my $cb = $COMMAND{$name}	1171	my $cb = $COMMAND{$name}
621	or return;	1172	or return;
…		…
627	cf::override;	1178	cf::override;
628	},	1179	},
629	on_extcmd => sub {	1180	on_extcmd => sub {
630	my ($pl, $buf) = @_;	1181	my ($pl, $buf) = @_;
631		1182
632	my $msg = eval { from_json $buf };	1183	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
633		1184
634	if (ref $msg) {	1185	if (ref $msg) {
		1186	my ($type, $reply, @payload) =
		1187	"ARRAY" eq ref $msg
		1188	? @$msg
		1189	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1190
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1191	if (my $cb = $EXTCMD{$type}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	1192	my @reply = $cb->($pl, @payload);
		1193
637	$pl->ext_reply ($msg->{msgid}, %reply);	1194	$pl->ext_reply ($reply, @reply)
638	}	1195	if $reply;
639	}	1196	}
640	} else {	1197	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1198	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}	1199	}
643		1200
644	cf::override;	1201	cf::override;
645	},	1202	},
646	;	1203	);
		1204
		1205	sub load_extensions {
		1206	cf::sync_job {
		1207	my %todo;
		1208
		1209	for my $path (<$LIBDIR/*.ext>) {
		1210	next unless -r $path;
		1211
		1212	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1213	my $base = $1;
		1214	my $pkg = $1;
		1215	$pkg =~ s/[^[:word:]]/_/g;
		1216	$pkg = "ext::$pkg";
		1217
		1218	open my $fh, "<:utf8", $path
		1219	or die "$path: $!";
		1220
		1221	my $source = do { local $/; <$fh> };
		1222
		1223	my %ext = (
		1224	path => $path,
		1225	base => $base,
		1226	pkg => $pkg,
		1227	);
		1228
		1229	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1230	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1231
		1232	$ext{source} =
		1233	"package $pkg; use strict; use utf8;\n"
		1234	. "#line 1 \"$path\"\n{\n"
		1235	. $source
		1236	. "\n};\n1";
		1237
		1238	$todo{$base} = \%ext;
		1239	}
		1240
		1241	my %done;
		1242	while (%todo) {
		1243	my $progress;
		1244
		1245	while (my ($k, $v) = each %todo) {
		1246	for (split /,\s*/, $v->{meta}{depends}) {
		1247	goto skip
		1248	unless exists $done{$_};
		1249	}
		1250
		1251	warn "... loading '$k' into '$v->{pkg}'\n";
		1252
		1253	unless (eval $v->{source}) {
		1254	my $msg = $@ ? "$v->{path}: $@\n"
		1255	: "$v->{base}: extension inactive.\n";
		1256
		1257	if (exists $v->{meta}{mandatory}) {
		1258	warn $msg;
		1259	warn "mandatory extension failed to load, exiting.\n";
		1260	exit 1;
		1261	}
		1262
		1263	warn $msg;
		1264	}
		1265
		1266	$done{$k} = delete $todo{$k};
		1267	push @EXTS, $v->{pkg};
		1268	$progress = 1;
		1269	}
		1270
		1271	skip:
		1272	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1273	unless $progress;
		1274	}
		1275	};
		1276	}
		1277
		1278	#############################################################################
		1279
		1280	=back
		1281
		1282	=head2 CORE EXTENSIONS
		1283
		1284	Functions and methods that extend core crossfire objects.
		1285
		1286	=cut
		1287
		1288	package cf::player;
		1289
		1290	use Coro::AIO;
		1291
		1292	=head3 cf::player
		1293
		1294	=over 4
		1295
		1296	=item cf::player::find $login
		1297
		1298	Returns the given player object, loading it if necessary (might block).
		1299
		1300	=cut
		1301
		1302	sub playerdir($) {
		1303	"$PLAYERDIR/"
		1304	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1305	}
		1306
		1307	sub path($) {
		1308	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1309
		1310	(playerdir $login) . "/playerdata"
		1311	}
		1312
		1313	sub find_active($) {
		1314	$cf::PLAYER{$_[0]}
		1315	and $cf::PLAYER{$_[0]}->active
		1316	and $cf::PLAYER{$_[0]}
		1317	}
		1318
		1319	sub exists($) {
		1320	my ($login) = @_;
		1321
		1322	$cf::PLAYER{$login}
		1323	or cf::sync_job { !aio_stat path $login }
		1324	}
		1325
		1326	sub find($) {
		1327	return $cf::PLAYER{$_[0]} || do {
		1328	my $login = $_[0];
		1329
		1330	my $guard = cf::lock_acquire "user_find:$login";
		1331
		1332	$cf::PLAYER{$_[0]} || do {
		1333	# rename old playerfiles to new ones
		1334	#TODO: remove when no longer required
		1335	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1336	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1337	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1338	aio_unlink +(playerdir $login) . "/$login.pl";
		1339
		1340	my $pl = load_pl path $login
		1341	or return;
		1342	$cf::PLAYER{$login} = $pl
		1343	}
		1344	}
		1345	}
		1346
		1347	sub save($) {
		1348	my ($pl) = @_;
		1349
		1350	return if $pl->{deny_save};
		1351
		1352	my $path = path $pl;
		1353	my $guard = cf::lock_acquire "user_save:$path";
		1354
		1355	return if $pl->{deny_save};
		1356
		1357	aio_mkdir playerdir $pl, 0770;
		1358	$pl->{last_save} = $cf::RUNTIME;
		1359
		1360	$pl->save_pl ($path);
		1361	Coro::cede;
		1362	}
		1363
		1364	sub new($) {
		1365	my ($login) = @_;
		1366
		1367	my $self = create;
		1368
		1369	$self->ob->name ($login);
		1370	$self->{deny_save} = 1;
		1371
		1372	$cf::PLAYER{$login} = $self;
		1373
		1374	$self
		1375	}
		1376
		1377	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1378
		1379	=cut
		1380
		1381	sub send_msg {
		1382	my $ns = shift->ns
		1383	or return;
		1384	$ns->send_msg (@_);
		1385	}
		1386
		1387	=item $pl->quit_character
		1388
		1389	Nukes the player without looking back. If logged in, the connection will
		1390	be destroyed. May block for a long time.
		1391
		1392	=cut
		1393
		1394	sub quit_character {
		1395	my ($pl) = @_;
		1396
		1397	my $name = $pl->ob->name;
		1398
		1399	$pl->{deny_save} = 1;
		1400	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1401
		1402	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1403	$pl->deactivate;
		1404	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1405	$pl->ns->destroy if $pl->ns;
		1406
		1407	my $path = playerdir $pl;
		1408	my $temp = "$path~$cf::RUNTIME~deleting~";
		1409	aio_rename $path, $temp;
		1410	delete $cf::PLAYER{$pl->ob->name};
		1411	$pl->destroy;
		1412
		1413	my $prefix = qr<^~\Q$name\E/>;
		1414
		1415	# nuke player maps
		1416	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1417
		1418	IO::AIO::aio_rmtree $temp;
		1419	}
		1420
		1421	=item $pl->kick
		1422
		1423	Kicks a player out of the game. This destroys the connection.
		1424
		1425	=cut
		1426
		1427	sub kick {
		1428	my ($pl, $kicker) = @_;
		1429
		1430	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1431	$pl->killer ("kicked");
		1432	$pl->ns->destroy;
		1433	}
		1434
		1435	=item cf::player::list_logins
		1436
		1437	Returns am arrayref of all valid playernames in the system, can take a
		1438	while and may block, so not sync_job-capable, ever.
		1439
		1440	=cut
		1441
		1442	sub list_logins {
		1443	my $dirs = aio_readdir $PLAYERDIR
		1444	or return [];
		1445
		1446	my @logins;
		1447
		1448	for my $login (@$dirs) {
		1449	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1450	aio_read $fh, 0, 512, my $buf, 0 or next;
		1451	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1452
		1453	utf8::decode $login;
		1454	push @logins, $login;
		1455	}
		1456
		1457	\@logins
		1458	}
		1459
		1460	=item $player->maps
		1461
		1462	Returns an arrayref of map paths that are private for this
		1463	player. May block.
		1464
		1465	=cut
		1466
		1467	sub maps($) {
		1468	my ($pl) = @_;
		1469
		1470	$pl = ref $pl ? $pl->ob->name : $pl;
		1471
		1472	my $files = aio_readdir playerdir $pl
		1473	or return;
		1474
		1475	my @paths;
		1476
		1477	for (@$files) {
		1478	utf8::decode $_;
		1479	next if /\.(?:pl|pst)$/;
		1480	next unless /^$PATH_SEP/o;
		1481
		1482	push @paths, cf::map::normalise "~$pl/$_";
		1483	}
		1484
		1485	\@paths
		1486	}
		1487
		1488	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1489
		1490	Expand crossfire pod fragments into protocol xml.
		1491
		1492	=cut
		1493
		1494	sub expand_cfpod {
		1495	((my $self), (local $_)) = @_;
		1496
		1497	# escape & and <
		1498	s/&/&amp;/g;
		1499	s/(?<![BIUGH])</&lt;/g;
		1500
		1501	# this is buggy, it needs to properly take care of nested <'s
		1502
		1503	1 while
		1504	# replace B<>, I<>, U<> etc.
		1505	s/B<([^\>]*)>/<b>$1<\/b>/
		1506	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1507	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1508	# replace G<male|female> tags
		1509	|| s{G<([^>|]*)\|([^>]*)>}{
		1510	$self->gender ? $2 : $1
		1511	}ge
		1512	# replace H<hint text>
		1513	|| s{H<([^\>]*)>}
		1514	{
		1515	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1516	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1517	"")
		1518	[$self->{hintmode}]
		1519	}ge;
		1520
		1521	# create single paragraphs (very hackish)
		1522	s/(?<=\S)\n(?=\w)/ /g;
		1523
		1524	# compress some whitespace
		1525	s/\s+\n/\n/g; # ws line-ends
		1526	s/\n\n+/\n/g; # double lines
		1527	s/^\n+//; # beginning lines
		1528	s/\n+$//; # ending lines
		1529
		1530	$_
		1531	}
		1532
		1533	sub hintmode {
		1534	$_[0]{hintmode} = $_[1] if @_ > 1;
		1535	$_[0]{hintmode}
		1536	}
		1537
		1538	=item $player->ext_reply ($msgid, @msg)
		1539
		1540	Sends an ext reply to the player.
		1541
		1542	=cut
		1543
		1544	sub ext_reply($$@) {
		1545	my ($self, $id, @msg) = @_;
		1546
		1547	if ($self->ns->extcmd == 2) {
		1548	$self->send ("ext " . $self->ns->{json_coder}->encode (["reply-$id", @msg]));
		1549	} elsif ($self->ns->extcmd == 1) {
		1550	#TODO: version 1, remove
		1551	unshift @msg, msgtype => "reply", msgid => $id;
		1552	$self->send ("ext " . $self->ns->{json_coder}->encode ({@msg}));
		1553	}
		1554	}
		1555
		1556	=item $player->ext_msg ($type, @msg)
		1557
		1558	Sends an ext event to the client.
		1559
		1560	=cut
		1561
		1562	sub ext_msg($$@) {
		1563	my ($self, $type, @msg) = @_;
		1564
		1565	$self->ns->ext_msg ($type, @msg);
		1566	}
		1567
		1568	=head3 cf::region
		1569
		1570	=over 4
		1571
		1572	=cut
		1573
		1574	package cf::region;
		1575
		1576	=item cf::region::find_by_path $path
		1577
		1578	Tries to decuce the likely region for a map knowing only its path.
		1579
		1580	=cut
		1581
		1582	sub find_by_path($) {
		1583	my ($path) = @_;
		1584
		1585	my ($match, $specificity);
		1586
		1587	for my $region (list) {
		1588	if ($region->{match} && $path =~ $region->{match}) {
		1589	($match, $specificity) = ($region, $region->specificity)
		1590	if $region->specificity > $specificity;
		1591	}
		1592	}
		1593
		1594	$match
		1595	}
		1596
		1597	=back
		1598
		1599	=head3 cf::map
		1600
		1601	=over 4
		1602
		1603	=cut
		1604
		1605	package cf::map;
		1606
		1607	use Fcntl;
		1608	use Coro::AIO;
		1609
		1610	use overload
		1611	'""' => \&as_string,
		1612	fallback => 1;
		1613
		1614	our $MAX_RESET = 3600;
		1615	our $DEFAULT_RESET = 3000;
		1616
		1617	sub generate_random_map {
		1618	my ($self, $rmp) = @_;
		1619	# mit "rum" bekleckern, nicht
		1620	$self->_create_random_map (
		1621	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1622	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1623	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1624	$rmp->{exit_on_final_map},
		1625	$rmp->{xsize}, $rmp->{ysize},
		1626	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1627	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1628	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1629	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1630	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1631	(cf::region::find $rmp->{region}), $rmp->{custom}
		1632	)
		1633	}
		1634
		1635	=item cf::map->register ($regex, $prio)
		1636
		1637	Register a handler for the map path matching the given regex at the
		1638	givne priority (higher is better, built-in handlers have priority 0, the
		1639	default).
		1640
		1641	=cut
647		1642
648	sub register {	1643	sub register {
		1644	my (undef, $regex, $prio) = @_;
		1645	my $pkg = caller;
		1646
		1647	no strict;
		1648	push @{"$pkg\::ISA"}, __PACKAGE__;
		1649
		1650	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1651	}
		1652
		1653	# also paths starting with '/'
		1654	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1655
		1656	sub thawer_merge {
649	my ($base, $pkg) = @_;	1657	my ($self, $merge) = @_;
650		1658
651	#TODO	1659	# we have to keep some variables in memory intact
652	}	1660	local $self->{path};
		1661	local $self->{load_path};
653		1662
654	sub load_extension {	1663	$self->SUPER::thawer_merge ($merge);
		1664	}
		1665
		1666	sub normalise {
655	my ($path) = @_;	1667	my ($path, $base) = @_;
656		1668
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1669	$path = "$path"; # make sure its a string
658	my $base = $1;
659	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";
662		1670
663	warn "loading '$path' into '$pkg'\n";	1671	$path =~ s/\.map$//;
664		1672
665	open my $fh, "<:utf8", $path	1673	# map plan:
666	or die "$path: $!";	1674	#
		1675	# /! non-realised random map exit (special hack!)
		1676	# {... are special paths that are not being touched
		1677	# ?xxx/... are special absolute paths
		1678	# ?random/... random maps
		1679	# /... normal maps
		1680	# ~user/... per-player map of a specific user
667		1681
668	my $source =	1682	$path =~ s/$PATH_SEP/\//go;
669	"package $pkg; use strict; use utf8;\n"
670	. "#line 1 \"$path\"\n{\n"
671	. (do { local $/; <$fh> })
672	. "\n};\n1";
673		1683
674	eval $source	1684	# treat it as relative path if it starts with
675	or die $@ ? "$path: $@\n"	1685	# something that looks reasonable
676	: "extension disabled.\n";	1686	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1687	$base or Carp::carp "normalise called with relative path and no base: '$path'";
677		1688
678	push @exts, $pkg;	1689	$base =~ s{[^/]+/?$}{};
679	$ext_pkg{$base} = $pkg;	1690	$path = "$base/$path";
680
681	# no strict 'refs';
682	# @{"$pkg\::ISA"} = ext::;
683
684	register $base, $pkg;
685	}
686
687	sub unload_extension {
688	my ($pkg) = @_;
689
690	warn "removing extension $pkg\n";
691
692	# remove hooks
693	#TODO
694	# for my $idx (0 .. $#PLUGIN_EVENT) {
695	# delete $hook[$idx]{$pkg};
696	# }	1691	}
697		1692
698	# remove commands	1693	for ($path) {
699	for my $name (keys %COMMAND) {	1694	redo if s{//}{/};
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1695	redo if s{/\.?/}{/};
		1696	redo if s{/[^/]+/\.\./}{/};
		1697	}
701		1698
702	if (@cb) {	1699	$path
703	$COMMAND{$name} = \@cb;	1700	}
		1701
		1702	sub new_from_path {
		1703	my (undef, $path, $base) = @_;
		1704
		1705	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1706
		1707	$path = normalise $path, $base;
		1708
		1709	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1710	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1711	my $self = bless cf::map::new, $pkg;
		1712	$self->{path} = $path; $self->path ($path);
		1713	$self->init; # pass $1 etc.
		1714	return $self;
		1715	}
		1716	}
		1717
		1718	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1719	()
		1720	}
		1721
		1722	sub init {
		1723	my ($self) = @_;
		1724
		1725	$self
		1726	}
		1727
		1728	sub as_string {
		1729	my ($self) = @_;
		1730
		1731	"$self->{path}"
		1732	}
		1733
		1734	# the displayed name, this is a one way mapping
		1735	sub visible_name {
		1736	&as_string
		1737	}
		1738
		1739	# the original (read-only) location
		1740	sub load_path {
		1741	my ($self) = @_;
		1742
		1743	"$MAPDIR/$self->{path}.map"
		1744	}
		1745
		1746	# the temporary/swap location
		1747	sub save_path {
		1748	my ($self) = @_;
		1749
		1750	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1751	"$TMPDIR/$path.map"
		1752	}
		1753
		1754	# the unique path, undef == no special unique path
		1755	sub uniq_path {
		1756	my ($self) = @_;
		1757
		1758	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1759	"$UNIQUEDIR/$path"
		1760	}
		1761
		1762	# and all this just because we cannot iterate over
		1763	# all maps in C++...
		1764	sub change_all_map_light {
		1765	my ($change) = @_;
		1766
		1767	$_->change_map_light ($change)
		1768	for grep $_->outdoor, values %cf::MAP;
		1769	}
		1770
		1771	sub decay_objects {
		1772	my ($self) = @_;
		1773
		1774	return if $self->{deny_reset};
		1775
		1776	$self->do_decay_objects;
		1777	}
		1778
		1779	sub unlink_save {
		1780	my ($self) = @_;
		1781
		1782	utf8::encode (my $save = $self->save_path);
		1783	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1784	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1785	}
		1786
		1787	sub load_header_from($) {
		1788	my ($self, $path) = @_;
		1789
		1790	utf8::encode $path;
		1791	#aio_open $path, O_RDONLY, 0
		1792	# or return;
		1793
		1794	$self->_load_header ($path)
		1795	or return;
		1796
		1797	$self->{load_path} = $path;
		1798
		1799	1
		1800	}
		1801
		1802	sub load_header_orig {
		1803	my ($self) = @_;
		1804
		1805	$self->load_header_from ($self->load_path)
		1806	}
		1807
		1808	sub load_header_temp {
		1809	my ($self) = @_;
		1810
		1811	$self->load_header_from ($self->save_path)
		1812	}
		1813
		1814	sub prepare_temp {
		1815	my ($self) = @_;
		1816
		1817	$self->last_access ((delete $self->{last_access})
		1818	|| $cf::RUNTIME); #d#
		1819	# safety
		1820	$self->{instantiate_time} = $cf::RUNTIME
		1821	if $self->{instantiate_time} > $cf::RUNTIME;
		1822	}
		1823
		1824	sub prepare_orig {
		1825	my ($self) = @_;
		1826
		1827	$self->{load_original} = 1;
		1828	$self->{instantiate_time} = $cf::RUNTIME;
		1829	$self->last_access ($cf::RUNTIME);
		1830	$self->instantiate;
		1831	}
		1832
		1833	sub load_header {
		1834	my ($self) = @_;
		1835
		1836	if ($self->load_header_temp) {
		1837	$self->prepare_temp;
704	} else {	1838	} else {
705	delete $COMMAND{$name};	1839	$self->load_header_orig
706	}	1840	or return;
		1841	$self->prepare_orig;
		1842	}
		1843
		1844	$self->{deny_reset} = 1
		1845	if $self->no_reset;
		1846
		1847	$self->default_region (cf::region::find_by_path $self->{path})
		1848	unless $self->default_region;
		1849
707	}	1850	1
		1851	}
708		1852
709	# remove extcmds	1853	sub find;
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1854	sub find {
711	delete $EXTCMD{$name};	1855	my ($path, $origin) = @_;
		1856
		1857	$path = normalise $path, $origin && $origin->path;
		1858
		1859	cf::lock_wait "map_find:$path";
		1860
		1861	$cf::MAP{$path} || do {
		1862	my $guard = cf::lock_acquire "map_find:$path";
		1863	my $map = new_from_path cf::map $path
		1864	or return;
		1865
		1866	$map->{last_save} = $cf::RUNTIME;
		1867
		1868	$map->load_header
		1869	or return;
		1870
		1871	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1872	# doing this can freeze the server in a sync job, obviously
		1873	#$cf::WAIT_FOR_TICK->wait;
		1874	$map->reset;
		1875	undef $guard;
		1876	return find $path;
		1877	}
		1878
		1879	$cf::MAP{$path} = $map
		1880	}
		1881	}
		1882
		1883	sub pre_load { }
		1884	sub post_load { }
		1885
		1886	sub load {
		1887	my ($self) = @_;
		1888
		1889	local $self->{deny_reset} = 1; # loading can take a long time
		1890
		1891	my $path = $self->{path};
		1892
712	}	1893	{
		1894	my $guard = cf::lock_acquire "map_load:$path";
713		1895
714	if (my $cb = $pkg->can ("unload")) {	1896	return if $self->in_memory != cf::MAP_SWAPPED;
715	eval {	1897
716	$cb->($pkg);	1898	$self->in_memory (cf::MAP_LOADING);
		1899
		1900	$self->alloc;
		1901
		1902	$self->pre_load;
		1903	Coro::cede;
		1904
		1905	$self->_load_objects ($self->{load_path}, 1)
		1906	or return;
		1907
		1908	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1909	if delete $self->{load_original};
		1910
		1911	if (my $uniq = $self->uniq_path) {
		1912	utf8::encode $uniq;
		1913	if (aio_open $uniq, O_RDONLY, 0) {
		1914	$self->clear_unique_items;
		1915	$self->_load_objects ($uniq, 0);
717	1	1916	}
718	} or warn "$pkg unloaded, but with errors: $@";	1917	}
719	}
720		1918
721	Symbol::delete_package $pkg;	1919	Coro::cede;
722	}	1920	# now do the right thing for maps
		1921	$self->link_multipart_objects;
		1922	$self->difficulty ($self->estimate_difficulty)
		1923	unless $self->difficulty;
		1924	Coro::cede;
723		1925
724	sub load_extensions {	1926	unless ($self->{deny_activate}) {
725	my $LIBDIR = maps_directory "perl";	1927	$self->decay_objects;
		1928	$self->fix_auto_apply;
		1929	$self->update_buttons;
		1930	Coro::cede;
		1931	$self->set_darkness_map;
		1932	Coro::cede;
		1933	$self->activate;
		1934	}
726		1935
727	for my $ext (<$LIBDIR/*.ext>) {	1936	$self->{last_save} = $cf::RUNTIME;
728	next unless -r $ext;	1937	$self->last_access ($cf::RUNTIME);
729	eval {
730	load_extension $ext;
731	1
732	} or warn "$ext not loaded: $@";
733	}
734	}
735		1938
736	#############################################################################	1939	$self->in_memory (cf::MAP_IN_MEMORY);
737	# load/save/clean perl data associated with a map	1940	}
738		1941
739	*cf::mapsupport::on_clean = sub {	1942	$self->post_load;
		1943	}
		1944
		1945	sub customise_for {
		1946	my ($self, $ob) = @_;
		1947
		1948	return find "~" . $ob->name . "/" . $self->{path}
		1949	if $self->per_player;
		1950
		1951	# return find "?party/" . $ob->name . "/" . $self->{path}
		1952	# if $self->per_party;
		1953
		1954	$self
		1955	}
		1956
		1957	# find and load all maps in the 3x3 area around a map
		1958	sub load_diag {
740	my ($map) = @_;	1959	my ($map) = @_;
741		1960
742	my $path = $map->tmpname;	1961	my @diag; # diagonal neighbours
743	defined $path or return;
744		1962
745	unlink "$path.pst";	1963	for (0 .. 3) {
746	};	1964	my $neigh = $map->tile_path ($_)
		1965	or next;
		1966	$neigh = find $neigh, $map
		1967	or next;
		1968	$neigh->load;
747		1969
748	attach_to_maps prio => -10000, package => cf::mapsupport::;	1970	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1971	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1972	}
749		1973
750	#############################################################################	1974	for (@diag) {
751	# load/save perl data associated with player->ob objects	1975	my $neigh = find @$_
752		1976	or next;
753	sub all_objects(@) {	1977	$neigh->load;
754	@_, map all_objects ($_->inv), @_	1978	}
755	}	1979	}
756		1980
757	# TODO: compatibility cruft, remove when no longer needed	1981	sub find_sync {
758	attach_to_players	1982	my ($path, $origin) = @_;
759	on_load => sub {
760	my ($pl, $path) = @_;
761		1983
762	for my $o (all_objects $pl->ob) {	1984	cf::sync_job { find $path, $origin }
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1985	}
764	$o->set_ob_key_value ("_perl_data");
765		1986
766	%$o = %{ Storable::thaw pack "H*", $value };	1987	sub do_load_sync {
		1988	my ($map) = @_;
		1989
		1990	cf::sync_job { $map->load };
		1991	}
		1992
		1993	our %MAP_PREFETCH;
		1994	our $MAP_PREFETCHER = undef;
		1995
		1996	sub find_async {
		1997	my ($path, $origin) = @_;
		1998
		1999	$path = normalise $path, $origin && $origin->{path};
		2000
		2001	if (my $map = $cf::MAP{$path}) {
		2002	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		2003	}
		2004
		2005	undef $MAP_PREFETCH{$path};
		2006	$MAP_PREFETCHER ||= cf::async {
		2007	while (%MAP_PREFETCH) {
		2008	for my $path (keys %MAP_PREFETCH) {
		2009	if (my $map = find $path) {
		2010	$map->load;
		2011	}
		2012
		2013	delete $MAP_PREFETCH{$path};
767	}	2014	}
768	}	2015	}
		2016	undef $MAP_PREFETCHER;
		2017	};
		2018	$MAP_PREFETCHER->prio (6);
		2019
		2020	()
		2021	}
		2022
		2023	sub save {
		2024	my ($self) = @_;
		2025
		2026	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2027
		2028	$self->{last_save} = $cf::RUNTIME;
		2029
		2030	return unless $self->dirty;
		2031
		2032	my $save = $self->save_path; utf8::encode $save;
		2033	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2034
		2035	$self->{load_path} = $save;
		2036
		2037	return if $self->{deny_save};
		2038
		2039	local $self->{last_access} = $self->last_access;#d#
		2040
		2041	cf::async {
		2042	$_->contr->save for $self->players;
		2043	};
		2044
		2045	if ($uniq) {
		2046	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2047	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2048	} else {
		2049	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
769	},	2050	}
770	;	2051	}
771		2052
772	#############################################################################	2053	sub swap_out {
		2054	my ($self) = @_;
773		2055
774	=head2 CORE EXTENSIONS	2056	# save first because save cedes
		2057	$self->save;
775		2058
776	Functions and methods that extend core crossfire objects.	2059	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2060
		2061	return if $self->players;
		2062	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2063	return if $self->{deny_save};
		2064
		2065	$self->clear;
		2066	$self->in_memory (cf::MAP_SWAPPED);
		2067	}
		2068
		2069	sub reset_at {
		2070	my ($self) = @_;
		2071
		2072	# TODO: safety, remove and allow resettable per-player maps
		2073	return 1e99 if $self->{deny_reset};
		2074
		2075	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2076	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2077
		2078	$time + $to
		2079	}
		2080
		2081	sub should_reset {
		2082	my ($self) = @_;
		2083
		2084	$self->reset_at <= $cf::RUNTIME
		2085	}
		2086
		2087	sub reset {
		2088	my ($self) = @_;
		2089
		2090	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2091
		2092	return if $self->players;
		2093
		2094	warn "resetting map ", $self->path;
		2095
		2096	$self->in_memory (cf::MAP_SWAPPED);
		2097
		2098	# need to save uniques path
		2099	unless ($self->{deny_save}) {
		2100	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2101
		2102	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2103	if $uniq;
		2104	}
		2105
		2106	delete $cf::MAP{$self->path};
		2107
		2108	$self->clear;
		2109
		2110	$_->clear_links_to ($self) for values %cf::MAP;
		2111
		2112	$self->unlink_save;
		2113	$self->destroy;
		2114	}
		2115
		2116	my $nuke_counter = "aaaa";
		2117
		2118	sub nuke {
		2119	my ($self) = @_;
		2120
		2121	delete $cf::MAP{$self->path};
		2122
		2123	$self->unlink_save;
		2124
		2125	bless $self, "cf::map";
		2126	delete $self->{deny_reset};
		2127	$self->{deny_save} = 1;
		2128	$self->reset_timeout (1);
		2129	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2130
		2131	$cf::MAP{$self->path} = $self;
		2132
		2133	$self->reset; # polite request, might not happen
		2134	}
		2135
		2136	=item $maps = cf::map::tmp_maps
		2137
		2138	Returns an arrayref with all map paths of currently instantiated and saved
		2139	maps. May block.
		2140
		2141	=cut
		2142
		2143	sub tmp_maps() {
		2144	[
		2145	map {
		2146	utf8::decode $_;
		2147	/\.map$/
		2148	? normalise $_
		2149	: ()
		2150	} @{ aio_readdir $TMPDIR or [] }
		2151	]
		2152	}
		2153
		2154	=item $maps = cf::map::random_maps
		2155
		2156	Returns an arrayref with all map paths of currently instantiated and saved
		2157	random maps. May block.
		2158
		2159	=cut
		2160
		2161	sub random_maps() {
		2162	[
		2163	map {
		2164	utf8::decode $_;
		2165	/\.map$/
		2166	? normalise "?random/$_"
		2167	: ()
		2168	} @{ aio_readdir $RANDOMDIR or [] }
		2169	]
		2170	}
		2171
		2172	=item cf::map::unique_maps
		2173
		2174	Returns an arrayref of paths of all shared maps that have
		2175	instantiated unique items. May block.
		2176
		2177	=cut
		2178
		2179	sub unique_maps() {
		2180	[
		2181	map {
		2182	utf8::decode $_;
		2183	/\.map$/
		2184	? normalise $_
		2185	: ()
		2186	} @{ aio_readdir $UNIQUEDIR or [] }
		2187	]
		2188	}
		2189
		2190	package cf;
		2191
		2192	=back
		2193
		2194	=head3 cf::object
		2195
		2196	=cut
		2197
		2198	package cf::object;
777		2199
778	=over 4	2200	=over 4
779		2201
780	=item cf::player::exists $login	2202	=item $ob->inv_recursive
781		2203
782	Returns true when the given account exists.	2204	Returns the inventory of the object _and_ their inventories, recursively.
783		2205
784	=cut	2206	=cut
785		2207
786	sub cf::player::exists($) {	2208	sub inv_recursive_;
787	cf::player::find $_[0]	2209	sub inv_recursive_ {
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2210	map { $_, inv_recursive_ $_->inv } @_
789	}	2211	}
		2212
		2213	sub inv_recursive {
		2214	inv_recursive_ inv $_[0]
		2215	}
		2216
		2217	package cf;
		2218
		2219	=back
		2220
		2221	=head3 cf::object::player
		2222
		2223	=over 4
790		2224
791	=item $player_object->reply ($npc, $msg[, $flags])	2225	=item $player_object->reply ($npc, $msg[, $flags])
792		2226
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2227	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	2228	can be C<undef>. Does the right thing when the player is currently in a
…		…
796		2230
797	=cut	2231	=cut
798		2232
799	# rough implementation of a future "reply" method that works	2233	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	2234	# with dialog boxes.
		2235	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	2236	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	2237	my ($self, $npc, $msg, $flags) = @_;
803		2238
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2239	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		2240
806	if ($self->{record_replies}) {	2241	if ($self->{record_replies}) {
807	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2242	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2243
808	} else {	2244	} else {
		2245	my $pl = $self->contr;
		2246
		2247	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2248	my $dialog = $pl->{npc_dialog};
		2249	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2250
		2251	} else {
809	$msg = $npc->name . " says: $msg" if $npc;	2252	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	2253	$self->message ($msg, $flags);
		2254	}
811	}	2255	}
812	}	2256	}
813		2257
814	=item $player->ext_reply ($msgid, $msgtype, %msg)	2258	=item $object->send_msg ($channel, $msg, $color, [extra...])
815		2259
816	Sends an ext reply to the player.
817
818	=cut	2260	=cut
819		2261
820	sub cf::player::ext_reply($$$%) {	2262	sub cf::object::send_msg {
821	my ($self, $id, %msg) = @_;	2263	my $pl = shift->contr
822		2264	or return;
823	$msg{msgid} = $id;	2265	$pl->send_msg (@_);
824
825	$self->send ("ext " . to_json \%msg);
826	}	2266	}
827		2267
828	=item $player_object->may ("access")	2268	=item $player_object->may ("access")
829		2269
830	Returns wether the given player is authorized to access resource "access"	2270	Returns wether the given player is authorized to access resource "access"
…		…
839	(ref $cf::CFG{"may_$access"}	2279	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2280	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	2281	: $cf::CFG{"may_$access"})
842	}	2282	}
843		2283
844	=cut	2284	=item $player_object->enter_link
845		2285
846	#############################################################################	2286	Freezes the player and moves him/her to a special map (C<{link}>).
		2287
		2288	The player should be reasonably safe there for short amounts of time. You
		2289	I<MUST> call C<leave_link> as soon as possible, though.
		2290
		2291	Will never block.
		2292
		2293	=item $player_object->leave_link ($map, $x, $y)
		2294
		2295	Moves the player out of the special C<{link}> map onto the specified
		2296	map. If the map is not valid (or omitted), the player will be moved back
		2297	to the location he/she was before the call to C<enter_link>, or, if that
		2298	fails, to the emergency map position.
		2299
		2300	Might block.
		2301
		2302	=cut
		2303
		2304	sub link_map {
		2305	unless ($LINK_MAP) {
		2306	$LINK_MAP = cf::map::find "{link}"
		2307	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2308	$LINK_MAP->load;
		2309	}
		2310
		2311	$LINK_MAP
		2312	}
		2313
		2314	sub cf::object::player::enter_link {
		2315	my ($self) = @_;
		2316
		2317	$self->deactivate_recursive;
		2318
		2319	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2320
		2321	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2322	if $self->map && $self->map->{path} ne "{link}";
		2323
		2324	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2325	}
		2326
		2327	sub cf::object::player::leave_link {
		2328	my ($self, $map, $x, $y) = @_;
		2329
		2330	return unless $self->contr->active;
		2331
		2332	my $link_pos = delete $self->{_link_pos};
		2333
		2334	unless ($map) {
		2335	# restore original map position
		2336	($map, $x, $y) = @{ $link_pos || [] };
		2337	$map = cf::map::find $map;
		2338
		2339	unless ($map) {
		2340	($map, $x, $y) = @$EMERGENCY_POSITION;
		2341	$map = cf::map::find $map
		2342	or die "FATAL: cannot load emergency map\n";
		2343	}
		2344	}
		2345
		2346	($x, $y) = (-1, -1)
		2347	unless (defined $x) && (defined $y);
		2348
		2349	# use -1 or undef as default coordinates, not 0, 0
		2350	($x, $y) = ($map->enter_x, $map->enter_y)
		2351	if $x <=0 && $y <= 0;
		2352
		2353	$map->load;
		2354	$map->load_diag;
		2355
		2356	return unless $self->contr->active;
		2357	$self->activate_recursive;
		2358
		2359	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2360	$self->enter_map ($map, $x, $y);
		2361	}
		2362
		2363	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2364
		2365	Moves the player to the given map-path and coordinates by first freezing
		2366	her, loading and preparing them map, calling the provided $check callback
		2367	that has to return the map if sucecssful, and then unfreezes the player on
		2368	the new (success) or old (failed) map position. In either case, $done will
		2369	be called at the end of this process.
		2370
		2371	=cut
		2372
		2373	our $GOTOGEN;
		2374
		2375	sub cf::object::player::goto {
		2376	my ($self, $path, $x, $y, $check, $done) = @_;
		2377
		2378	# do generation counting so two concurrent goto's will be executed in-order
		2379	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2380
		2381	$self->enter_link;
		2382
		2383	(async {
		2384	my $map = eval {
		2385	my $map = cf::map::find $path;
		2386
		2387	if ($map) {
		2388	$map = $map->customise_for ($self);
		2389	$map = $check->($map) if $check && $map;
		2390	} else {
		2391	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2392	}
		2393
		2394	$map
		2395	};
		2396
		2397	if ($@) {
		2398	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2399	LOG llevError | logBacktrace, Carp::longmess $@;
		2400	}
		2401
		2402	if ($gen == $self->{_goto_generation}) {
		2403	delete $self->{_goto_generation};
		2404	$self->leave_link ($map, $x, $y);
		2405	}
		2406
		2407	$done->() if $done;
		2408	})->prio (1);
		2409	}
		2410
		2411	=item $player_object->enter_exit ($exit_object)
		2412
		2413	=cut
		2414
		2415	sub parse_random_map_params {
		2416	my ($spec) = @_;
		2417
		2418	my $rmp = { # defaults
		2419	xsize => (cf::rndm 15, 40),
		2420	ysize => (cf::rndm 15, 40),
		2421	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2422	#layout => string,
		2423	};
		2424
		2425	for (split /\n/, $spec) {
		2426	my ($k, $v) = split /\s+/, $_, 2;
		2427
		2428	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2429	}
		2430
		2431	$rmp
		2432	}
		2433
		2434	sub prepare_random_map {
		2435	my ($exit) = @_;
		2436
		2437	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2438
		2439	# all this does is basically replace the /! path by
		2440	# a new random map path (?random/...) with a seed
		2441	# that depends on the exit object
		2442
		2443	my $rmp = parse_random_map_params $exit->msg;
		2444
		2445	if ($exit->map) {
		2446	$rmp->{region} = $exit->region->name;
		2447	$rmp->{origin_map} = $exit->map->path;
		2448	$rmp->{origin_x} = $exit->x;
		2449	$rmp->{origin_y} = $exit->y;
		2450	}
		2451
		2452	$rmp->{random_seed} ||= $exit->random_seed;
		2453
		2454	my $data = cf::to_json $rmp;
		2455	my $md5 = Digest::MD5::md5_hex $data;
		2456	my $meta = "$RANDOMDIR/$md5.meta";
		2457
		2458	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2459	aio_write $fh, 0, (length $data), $data, 0;
		2460	undef $fh;
		2461	aio_rename "$meta~", $meta;
		2462
		2463	$exit->slaying ("?random/$md5");
		2464	$exit->msg (undef);
		2465	}
		2466	}
		2467
		2468	sub cf::object::player::enter_exit {
		2469	my ($self, $exit) = @_;
		2470
		2471	return unless $self->type == cf::PLAYER;
		2472
		2473	if ($exit->slaying eq "/!") {
		2474	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2475	# the problem is that $exit might not survive long enough
		2476	# so it needs to be done right now, right here
		2477	cf::sync_job { prepare_random_map $exit };
		2478	}
		2479
		2480	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2481	my $hp = $exit->stats->hp;
		2482	my $sp = $exit->stats->sp;
		2483
		2484	$self->enter_link;
		2485
		2486	# if exit is damned, update players death & WoR home-position
		2487	$self->contr->savebed ($slaying, $hp, $sp)
		2488	if $exit->flag (FLAG_DAMNED);
		2489
		2490	(async {
		2491	$self->deactivate_recursive; # just to be sure
		2492	unless (eval {
		2493	$self->goto ($slaying, $hp, $sp);
		2494
		2495	1;
		2496	}) {
		2497	$self->message ("Something went wrong deep within the crossfire server. "
		2498	. "I'll try to bring you back to the map you were before. "
		2499	. "Please report this to the dungeon master!",
		2500	cf::NDI_UNIQUE | cf::NDI_RED);
		2501
		2502	warn "ERROR in enter_exit: $@";
		2503	$self->leave_link;
		2504	}
		2505	})->prio (1);
		2506	}
		2507
		2508	=head3 cf::client
		2509
		2510	=over 4
		2511
		2512	=item $client->send_drawinfo ($text, $flags)
		2513
		2514	Sends a drawinfo packet to the client. Circumvents output buffering so
		2515	should not be used under normal circumstances.
		2516
		2517	=cut
		2518
		2519	sub cf::client::send_drawinfo {
		2520	my ($self, $text, $flags) = @_;
		2521
		2522	utf8::encode $text;
		2523	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2524	}
		2525
		2526	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2527
		2528	Send a drawinfo or msg packet to the client, formatting the msg for the
		2529	client if neccessary. C<$type> should be a string identifying the type of
		2530	the message, with C<log> being the default. If C<$color> is negative, suppress
		2531	the message unless the client supports the msg packet.
		2532
		2533	=cut
		2534
		2535	sub cf::client::send_msg {
		2536	my ($self, $channel, $msg, $color, @extra) = @_;
		2537
		2538	$msg = $self->pl->expand_cfpod ($msg);
		2539
		2540	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2541
		2542	if (ref $channel) {
		2543	# send meta info to client, if not yet sent
		2544	unless (exists $self->{channel}{$channel->{id}}) {
		2545	$self->{channel}{$channel->{id}} = $channel;
		2546	$self->ext_msg (channel_info => $channel);
		2547	}
		2548
		2549	$channel = $channel->{id};
		2550	}
		2551
		2552	return unless @extra || length $msg;
		2553
		2554	if ($self->can_msg) {
		2555	# default colour, mask it out
		2556	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2557	if $color & cf::NDI_DEF;
		2558
		2559	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2560	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2561	} else {
		2562	if ($color >= 0) {
		2563	# replace some tags by gcfclient-compatible ones
		2564	for ($msg) {
		2565	1 while
		2566	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2567	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2568	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2569	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2570	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2571	}
		2572
		2573	$color &= cf::NDI_COLOR_MASK;
		2574
		2575	utf8::encode $msg;
		2576
		2577	if (0 && $msg =~ /\[/) {
		2578	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2579	} else {
		2580	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2581	$self->send_packet ("drawinfo $color $msg")
		2582	}
		2583	}
		2584	}
		2585	}
		2586
		2587	=item $client->ext_msg ($type, @msg)
		2588
		2589	Sends an ext event to the client.
		2590
		2591	=cut
		2592
		2593	sub cf::client::ext_msg($$@) {
		2594	my ($self, $type, @msg) = @_;
		2595
		2596	my $extcmd = $self->extcmd;
		2597
		2598	if ($extcmd == 2) {
		2599	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2600	} elsif ($extcmd == 1) { # TODO: remove
		2601	push @msg, msgtype => "event_$type";
		2602	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2603	}
		2604	}
		2605
		2606	=item $success = $client->query ($flags, "text", \&cb)
		2607
		2608	Queues a query to the client, calling the given callback with
		2609	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2610	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2611
		2612	Queries can fail, so check the return code. Or don't, as queries will
		2613	become reliable at some point in the future.
		2614
		2615	=cut
		2616
		2617	sub cf::client::query {
		2618	my ($self, $flags, $text, $cb) = @_;
		2619
		2620	return unless $self->state == ST_PLAYING
		2621	|| $self->state == ST_SETUP
		2622	|| $self->state == ST_CUSTOM;
		2623
		2624	$self->state (ST_CUSTOM);
		2625
		2626	utf8::encode $text;
		2627	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2628
		2629	$self->send_packet ($self->{query_queue}[0][0])
		2630	if @{ $self->{query_queue} } == 1;
		2631
		2632	1
		2633	}
		2634
		2635	cf::client->attach (
		2636	on_connect => sub {
		2637	my ($ns) = @_;
		2638
		2639	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2640	},
		2641	on_reply => sub {
		2642	my ($ns, $msg) = @_;
		2643
		2644	# this weird shuffling is so that direct followup queries
		2645	# get handled first
		2646	my $queue = delete $ns->{query_queue}
		2647	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2648
		2649	(shift @$queue)->[1]->($msg);
		2650	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2651
		2652	push @{ $ns->{query_queue} }, @$queue;
		2653
		2654	if (@{ $ns->{query_queue} } == @$queue) {
		2655	if (@$queue) {
		2656	$ns->send_packet ($ns->{query_queue}[0][0]);
		2657	} else {
		2658	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2659	}
		2660	}
		2661	},
		2662	on_exticmd => sub {
		2663	my ($ns, $buf) = @_;
		2664
		2665	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2666
		2667	if (ref $msg) {
		2668	my ($type, $reply, @payload) =
		2669	"ARRAY" eq ref $msg
		2670	? @$msg
		2671	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2672
		2673	if (my $cb = $EXTICMD{$type}) {
		2674	my @reply = $cb->($ns, @payload);
		2675
		2676	$ns->ext_reply ($reply, @reply)
		2677	if $reply;
		2678	}
		2679	} else {
		2680	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2681	}
		2682
		2683	cf::override;
		2684	},
		2685	);
		2686
		2687	=item $client->async (\&cb)
		2688
		2689	Create a new coroutine, running the specified callback. The coroutine will
		2690	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2691	or loss of connection).
		2692
		2693	=cut
		2694
		2695	sub cf::client::async {
		2696	my ($self, $cb) = @_;
		2697
		2698	my $coro = &Coro::async ($cb);
		2699
		2700	$coro->on_destroy (sub {
		2701	delete $self->{_coro}{$coro+0};
		2702	});
		2703
		2704	$self->{_coro}{$coro+0} = $coro;
		2705
		2706	$coro
		2707	}
		2708
		2709	cf::client->attach (
		2710	on_destroy => sub {
		2711	my ($ns) = @_;
		2712
		2713	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2714	},
		2715	);
		2716
		2717	=back
		2718
847		2719
848	=head2 SAFE SCRIPTING	2720	=head2 SAFE SCRIPTING
849		2721
850	Functions that provide a safe environment to compile and execute	2722	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	2723	snippets of perl code without them endangering the safety of the server
…		…
858	our $safe = new Safe "safe";	2730	our $safe = new Safe "safe";
859	our $safe_hole = new Safe::Hole;	2731	our $safe_hole = new Safe::Hole;
860		2732
861	$SIG{FPE} = 'IGNORE';	2733	$SIG{FPE} = 'IGNORE';
862		2734
863	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2735	$safe->permit_only (Opcode::opset qw(
		2736	:base_core :base_mem :base_orig :base_math
		2737	grepstart grepwhile mapstart mapwhile
		2738	sort time
		2739	));
864		2740
865	# here we export the classes and methods available to script code	2741	# here we export the classes and methods available to script code
866		2742
867	=pod	2743	=pod
868		2744
869	The following fucntions and emthods are available within a safe environment:	2745	The following functions and methods are available within a safe environment:
870		2746
871	cf::object contr pay_amount pay_player	2747	cf::object
		2748	contr pay_amount pay_player map x y force_find force_add
		2749	insert remove
		2750
872	cf::object::player player	2751	cf::object::player
873	cf::player peaceful	2752	player
		2753
		2754	cf::player
		2755	peaceful
		2756
		2757	cf::map
		2758	trigger
874		2759
875	=cut	2760	=cut
876		2761
877	for (	2762	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	2763	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2764	insert remove inv)],
879	["cf::object::player" => qw(player)],	2765	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	2766	["cf::player" => qw(peaceful)],
		2767	["cf::map" => qw(trigger)],
881	) {	2768	) {
882	no strict 'refs';	2769	no strict 'refs';
883	my ($pkg, @funs) = @$_;	2770	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2771	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	2772	for @funs;
…		…
953	=back	2840	=back
954		2841
955	=cut	2842	=cut
956		2843
957	#############################################################################	2844	#############################################################################
		2845	# the server's init and main functions
958		2846
959	=head2 EXTENSION DATABASE SUPPORT	2847	sub load_facedata($) {
		2848	my ($path) = @_;
960		2849
961	Crossfire maintains a very simple database for extension use. It can	2850	warn "loading facedata from $path\n";
962	currently store anything that can be serialised using Storable, which
963	excludes objects.
964		2851
965	The parameter C<$family> should best start with the name of the extension	2852	my $facedata;
966	using it, it should be unique.	2853	0 < aio_load $path, $facedata
		2854	or die "$path: $!";
967		2855
968	=over 4	2856	$facedata = Coro::Storable::thaw $facedata;
969		2857
970	=item $hashref = cf::db_get $family	2858	$facedata->{version} == 2
		2859	or cf::cleanup "$path: version mismatch, cannot proceed.";
971		2860
972	Return a hashref for use by the extension C<$family>, which can be
973	modified. After modifications, you have to call C<cf::db_dirty> or
974	C<cf::db_sync>.
975
976	=item $value = cf::db_get $family => $key
977
978	Returns a single value from the database
979
980	=item cf::db_put $family => $hashref
981
982	Stores the given family hashref into the database. Updates are delayed, if
983	you want the data to be synced to disk immediately, use C<cf::db_sync>.
984
985	=item cf::db_put $family => $key => $value
986
987	Stores the given C<$value> in the family hash. Updates are delayed, if you
988	want the data to be synced to disk immediately, use C<cf::db_sync>.
989
990	=item cf::db_dirty
991
992	Marks the database as dirty, to be updated at a later time.
993
994	=item cf::db_sync
995
996	Immediately write the database to disk I<if it is dirty>.
997
998	=cut
999
1000	our $DB;
1001
1002	{
1003	my $path = cf::localdir . "/database.pst";
1004
1005	sub db_load() {
1006	warn "loading database $path\n";#d# remove later
1007	$DB = stat $path ? Storable::retrieve $path : { };
1008	}	2861	{
		2862	my $faces = $facedata->{faceinfo};
1009		2863
1010	my $pid;	2864	while (my ($face, $info) = each %$faces) {
		2865	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2866	cf::face::set_visibility $idx, $info->{visibility};
		2867	cf::face::set_magicmap $idx, $info->{magicmap};
		2868	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2869	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1011		2870
1012	sub db_save() {	2871	cf::cede_to_tick;
1013	warn "saving database $path\n";#d# remove later
1014	waitpid $pid, 0 if $pid;
1015	if (0 == ($pid = fork)) {
1016	$DB->{_meta}{version} = 1;
1017	Storable::nstore $DB, "$path~";
1018	rename "$path~", $path;
1019	cf::_exit 0 if defined $pid;
1020	}
1021	}
1022
1023	my $dirty;
1024
1025	sub db_sync() {
1026	db_save if $dirty;
1027	undef $dirty;
1028	}
1029
1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1031	db_sync;
1032	});
1033
1034	sub db_dirty() {
1035	$dirty = 1;
1036	$idle->start;
1037	}
1038
1039	sub db_get($;$) {
1040	@_ >= 2
1041	? $DB->{$_[0]}{$_[1]}
1042	: ($DB->{$_[0]} ||= { })
1043	}
1044
1045	sub db_put($$;$) {
1046	if (@_ >= 3) {
1047	$DB->{$_[0]}{$_[1]} = $_[2];
1048	} else {
1049	$DB->{$_[0]} = $_[1];
1050	}
1051	db_dirty;
1052	}
1053
1054	attach_global
1055	prio => 10000,
1056	on_cleanup => sub {
1057	db_sync;
1058	},	2872	}
		2873
		2874	while (my ($face, $info) = each %$faces) {
		2875	next unless $info->{smooth};
		2876	my $idx = cf::face::find $face
		2877	or next;
		2878	if (my $smooth = cf::face::find $info->{smooth}) {
		2879	cf::face::set_smooth $idx, $smooth;
		2880	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2881	} else {
		2882	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2883	}
		2884
		2885	cf::cede_to_tick;
		2886	}
1059	;	2887	}
1060	}
1061		2888
1062	#############################################################################	2889	{
1063	# the server's main()	2890	my $anims = $facedata->{animinfo};
		2891
		2892	while (my ($anim, $info) = each %$anims) {
		2893	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2894	cf::cede_to_tick;
		2895	}
		2896
		2897	cf::anim::invalidate_all; # d'oh
		2898	}
		2899
		2900	{
		2901	# TODO: for gcfclient pleasure, we should give resources
		2902	# that gcfclient doesn't grok a >10000 face index.
		2903	my $res = $facedata->{resource};
		2904	my $enc = JSON::XS->new->utf8->canonical;
		2905
		2906	my $soundconf = delete $res->{"res/sound.conf"};
		2907
		2908	while (my ($name, $info) = each %$res) {
		2909	my $meta = $enc->encode ({
		2910	name => $name,
		2911	%{ $info->{meta} || {} },
		2912	});
		2913
		2914	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2915
		2916	if ($info->{type} & 1) {
		2917	# prepend meta info
		2918
		2919	my $data = pack "(w/a*)*", $meta, $info->{data};
		2920	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2921
		2922	cf::face::set_data $idx, 0, $data, $chk;
		2923	} else {
		2924	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};
		2925	}
		2926
		2927	cf::face::set_type $idx, $info->{type};
		2928
		2929	cf::cede_to_tick;
		2930	}
		2931
		2932	if ($soundconf) {
		2933	$soundconf = $enc->decode (delete $soundconf->{data});
		2934
		2935	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		2936	my $sound = $soundconf->{compat}[$_]
		2937	or next;
		2938
		2939	my $face = cf::face::find "sound/$sound->[1]";
		2940	cf::sound::set $sound->[0] => $face;
		2941	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		2942	}
		2943
		2944	while (my ($k, $v) = each %{$soundconf->{event}}) {
		2945	my $face = cf::face::find "sound/$v";
		2946	cf::sound::set $k => $face;
		2947	}
		2948	}
		2949	}
		2950
		2951	1
		2952	}
		2953
		2954	register_exticmd fx_want => sub {
		2955	my ($ns, $want) = @_;
		2956
		2957	while (my ($k, $v) = each %$want) {
		2958	$ns->fx_want ($k, $v);
		2959	}
		2960	};
		2961
		2962	sub reload_regions {
		2963	load_resource_file "$MAPDIR/regions"
		2964	or die "unable to load regions file\n";
		2965
		2966	for (cf::region::list) {
		2967	$_->{match} = qr/$_->{match}/
		2968	if exists $_->{match};
		2969	}
		2970	}
		2971
		2972	sub reload_facedata {
		2973	load_facedata "$DATADIR/facedata"
		2974	or die "unable to load facedata\n";
		2975	}
		2976
		2977	sub reload_archetypes {
		2978	load_resource_file "$DATADIR/archetypes"
		2979	or die "unable to load archetypes\n";
		2980	#d# NEED to laod twice to resolve forward references
		2981	# this really needs to be done in an extra post-pass
		2982	# (which needs to be synchronous, so solve it differently)
		2983	load_resource_file "$DATADIR/archetypes"
		2984	or die "unable to load archetypes\n";
		2985	}
		2986
		2987	sub reload_treasures {
		2988	load_resource_file "$DATADIR/treasures"
		2989	or die "unable to load treasurelists\n";
		2990	}
		2991
		2992	sub reload_resources {
		2993	warn "reloading resource files...\n";
		2994
		2995	reload_regions;
		2996	reload_facedata;
		2997	#reload_archetypes;#d#
		2998	reload_archetypes;
		2999	reload_treasures;
		3000
		3001	warn "finished reloading resource files\n";
		3002	}
		3003
		3004	sub init {
		3005	reload_resources;
		3006	}
1064		3007
1065	sub cfg_load {	3008	sub cfg_load {
1066	open my $fh, "<:utf8", cf::confdir . "/config"	3009	open my $fh, "<:utf8", "$CONFDIR/config"
1067	or return;	3010	or return;
1068		3011
1069	local $/;	3012	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;	3013	*CFG = YAML::Syck::Load <$fh>;
		3014
		3015	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3016
		3017	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3018	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3019
		3020	if (exists $CFG{mlockall}) {
		3021	eval {
		3022	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3023	and die "WARNING: m(un)lockall failed: $!\n";
		3024	};
		3025	warn $@ if $@;
		3026	}
1071	}	3027	}
1072		3028
1073	sub main {	3029	sub main {
		3030	# we must not ever block the main coroutine
		3031	local $Coro::idle = sub {
		3032	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3033	(async {
		3034	Event::one_event;
		3035	})->prio (Coro::PRIO_MAX);
		3036	};
		3037
1074	cfg_load;	3038	cfg_load;
1075	db_load;	3039	db_init;
1076	load_extensions;	3040	load_extensions;
		3041
		3042	$TICK_WATCHER->start;
1077	Event::loop;	3043	Event::loop;
1078	}	3044	}
1079		3045
1080	#############################################################################	3046	#############################################################################
1081	# initialisation	3047	# initialisation and cleanup
1082		3048
1083	sub _perl_reload(&) {	3049	# install some emergency cleanup handlers
		3050	BEGIN {
		3051	for my $signal (qw(INT HUP TERM)) {
		3052	Event->signal (
		3053	reentrant => 0,
		3054	data => WF_AUTOCANCEL,
		3055	signal => $signal,
		3056	prio => 0,
		3057	cb => sub {
		3058	cf::cleanup "SIG$signal";
		3059	},
		3060	);
		3061	}
		3062	}
		3063
		3064	sub write_runtime {
		3065	my $runtime = "$LOCALDIR/runtime";
		3066
		3067	# first touch the runtime file to show we are still running:
		3068	# the fsync below can take a very very long time.
		3069
		3070	IO::AIO::aio_utime $runtime, undef, undef;
		3071
		3072	my $guard = cf::lock_acquire "write_runtime";
		3073
		3074	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3075	or return;
		3076
		3077	my $value = $cf::RUNTIME + 90 + 10;
		3078	# 10 is the runtime save interval, for a monotonic clock
		3079	# 60 allows for the watchdog to kill the server.
		3080
		3081	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3082	and return;
		3083
		3084	# always fsync - this file is important
		3085	aio_fsync $fh
		3086	and return;
		3087
		3088	# touch it again to show we are up-to-date
		3089	aio_utime $fh, undef, undef;
		3090
		3091	close $fh
		3092	or return;
		3093
		3094	aio_rename "$runtime~", $runtime
		3095	and return;
		3096
		3097	warn "runtime file written.\n";
		3098
		3099	1
		3100	}
		3101
		3102	sub emergency_save() {
		3103	my $freeze_guard = cf::freeze_mainloop;
		3104
		3105	warn "enter emergency perl save\n";
		3106
		3107	cf::sync_job {
		3108	# use a peculiar iteration method to avoid tripping on perl
		3109	# refcount bugs in for. also avoids problems with players
		3110	# and maps saved/destroyed asynchronously.
		3111	warn "begin emergency player save\n";
		3112	for my $login (keys %cf::PLAYER) {
		3113	my $pl = $cf::PLAYER{$login} or next;
		3114	$pl->valid or next;
		3115	$pl->save;
		3116	}
		3117	warn "end emergency player save\n";
		3118
		3119	warn "begin emergency map save\n";
		3120	for my $path (keys %cf::MAP) {
		3121	my $map = $cf::MAP{$path} or next;
		3122	$map->valid or next;
		3123	$map->save;
		3124	}
		3125	warn "end emergency map save\n";
		3126
		3127	warn "begin emergency database checkpoint\n";
		3128	BDB::db_env_txn_checkpoint $DB_ENV;
		3129	warn "end emergency database checkpoint\n";
		3130	};
		3131
		3132	warn "leave emergency perl save\n";
		3133	}
		3134
		3135	sub post_cleanup {
1084	my ($msg) = @_;	3136	my ($make_core) = @_;
1085		3137
1086	$msg->("reloading...");	3138	warn Carp::longmess "post_cleanup backtrace"
		3139	if $make_core;
		3140	}
1087		3141
1088	eval {	3142	sub do_reload_perl() {
1089	# cancel all watchers	3143	# can/must only be called in main
		3144	if ($Coro::current != $Coro::main) {
		3145	warn "can only reload from main coroutine";
		3146	return;
		3147	}
		3148
		3149	warn "reloading...";
		3150
		3151	warn "entering sync_job";
		3152
		3153	cf::sync_job {
		3154	cf::write_runtime; # external watchdog should not bark
		3155	cf::emergency_save;
		3156	cf::write_runtime; # external watchdog should not bark
		3157
		3158	warn "syncing database to disk";
		3159	BDB::db_env_txn_checkpoint $DB_ENV;
		3160
		3161	# if anything goes wrong in here, we should simply crash as we already saved
		3162
		3163	warn "cancelling all WF_AUTOCANCEL watchers";
1090	for (Event::all_watchers) {	3164	for (Event::all_watchers) {
1091	$_->cancel if $_->data & WF_AUTOCANCEL;	3165	$_->cancel if $_->data & WF_AUTOCANCEL;
1092	}	3166	}
1093		3167
1094	# unload all extensions	3168	warn "flushing outstanding aio requests";
1095	for (@exts) {	3169	for (;;) {
1096	$msg->("unloading <$_>");	3170	BDB::flush;
1097	unload_extension $_;	3171	IO::AIO::flush;
		3172	Coro::cede;
		3173	last unless IO::AIO::nreqs || BDB::nreqs;
		3174	warn "iterate...";
		3175	}
		3176
		3177	++$RELOAD;
		3178
		3179	warn "cancelling all extension coros";
		3180	$_->cancel for values %EXT_CORO;
		3181	%EXT_CORO = ();
		3182
		3183	warn "removing commands";
		3184	%COMMAND = ();
		3185
		3186	warn "removing ext/exti commands";
		3187	%EXTCMD = ();
		3188	%EXTICMD = ();
		3189
		3190	warn "unloading/nuking all extensions";
		3191	for my $pkg (@EXTS) {
		3192	warn "... unloading $pkg";
		3193
		3194	if (my $cb = $pkg->can ("unload")) {
		3195	eval {
		3196	$cb->($pkg);
		3197	1
		3198	} or warn "$pkg unloaded, but with errors: $@";
1098	}	3199	}
1099		3200
		3201	warn "... nuking $pkg";
		3202	Symbol::delete_package $pkg;
		3203	}
		3204
1100	# unload all modules loaded from $LIBDIR	3205	warn "unloading all perl modules loaded from $LIBDIR";
1101	while (my ($k, $v) = each %INC) {	3206	while (my ($k, $v) = each %INC) {
1102	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3207	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1103		3208
1104	$msg->("removing <$k>");	3209	warn "... unloading $k";
1105	delete $INC{$k};	3210	delete $INC{$k};
1106		3211
1107	$k =~ s/\.pm$//;	3212	$k =~ s/\.pm$//;
1108	$k =~ s/\//::/g;	3213	$k =~ s/\//::/g;
1109		3214
…		…
1112	}	3217	}
1113		3218
1114	Symbol::delete_package $k;	3219	Symbol::delete_package $k;
1115	}	3220	}
1116		3221
1117	# sync database to disk
1118	cf::db_sync;
1119
1120	# get rid of safe::, as good as possible	3222	warn "getting rid of safe::, as good as possible";
1121	Symbol::delete_package "safe::$_"	3223	Symbol::delete_package "safe::$_"
1122	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3224	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1123		3225
1124	# remove register_script_function callbacks
1125	# TODO
1126
1127	# unload cf.pm "a bit"	3226	warn "unloading cf.pm \"a bit\"";
1128	delete $INC{"cf.pm"};	3227	delete $INC{"cf.pm"};
		3228	delete $INC{"cf/pod.pm"};
1129		3229
1130	# don't, removes xs symbols, too,	3230	# don't, removes xs symbols, too,
1131	# and global variables created in xs	3231	# and global variables created in xs
1132	#Symbol::delete_package __PACKAGE__;	3232	#Symbol::delete_package __PACKAGE__;
1133		3233
1134	# reload cf.pm	3234	warn "unload completed, starting to reload now";
		3235
1135	$msg->("reloading cf.pm");	3236	warn "reloading cf.pm";
1136	require cf;	3237	require cf;
		3238	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1137		3239
1138	# load config and database again	3240	warn "loading config and database again";
1139	cf::cfg_load;	3241	cf::cfg_load;
1140	cf::db_load;
1141		3242
1142	# load extensions	3243	warn "loading extensions";
1143	$msg->("load extensions");
1144	cf::load_extensions;	3244	cf::load_extensions;
1145		3245
1146	# reattach attachments to objects	3246	warn "reattaching attachments to objects/players";
1147	$msg->("reattach");	3247	_global_reattach; # objects, sockets
1148	_global_reattach;	3248	warn "reattaching attachments to maps";
		3249	reattach $_ for values %MAP;
		3250	warn "reattaching attachments to players";
		3251	reattach $_ for values %PLAYER;
		3252
		3253	warn "leaving sync_job";
		3254
		3255	1
		3256	} or do {
		3257	warn $@;
		3258	warn "error while reloading, exiting.";
		3259	exit 1;
1149	};	3260	};
1150	$msg->($@) if $@;
1151		3261
1152	$msg->("reloaded");	3262	warn "reloaded";
1153	};	3263	};
1154		3264
1155	sub perl_reload() {	3265	our $RELOAD_WATCHER; # used only during reload
1156	_perl_reload {	3266
1157	warn $_[0];	3267	sub reload_perl() {
1158	print "$_[0]\n";	3268	# doing reload synchronously and two reloads happen back-to-back,
		3269	# coro crashes during coro_state_free->destroy here.
		3270
		3271	$RELOAD_WATCHER ||= Event->timer (
		3272	reentrant => 0,
		3273	after => 0,
		3274	data => WF_AUTOCANCEL,
		3275	cb => sub {
		3276	do_reload_perl;
		3277	undef $RELOAD_WATCHER;
		3278	},
1159	};	3279	);
1160	}	3280	}
1161		3281
1162	register "<global>", __PACKAGE__;
1163
1164	register_command "perl-reload" => sub {	3282	register_command "reload" => sub {
1165	my ($who, $arg) = @_;	3283	my ($who, $arg) = @_;
1166		3284
1167	if ($who->flag (FLAG_WIZ)) {	3285	if ($who->flag (FLAG_WIZ)) {
1168	_perl_reload {	3286	$who->message ("reloading server.");
1169	warn $_[0];	3287	async { reload_perl };
1170	$who->message ($_[0]);	3288	}
		3289	};
		3290
		3291	unshift @INC, $LIBDIR;
		3292
		3293	my $bug_warning = 0;
		3294
		3295	our @WAIT_FOR_TICK;
		3296	our @WAIT_FOR_TICK_BEGIN;
		3297
		3298	sub wait_for_tick {
		3299	return unless $TICK_WATCHER->is_active;
		3300	return if $Coro::current == $Coro::main;
		3301
		3302	my $signal = new Coro::Signal;
		3303	push @WAIT_FOR_TICK, $signal;
		3304	$signal->wait;
		3305	}
		3306
		3307	sub wait_for_tick_begin {
		3308	return unless $TICK_WATCHER->is_active;
		3309	return if $Coro::current == $Coro::main;
		3310
		3311	my $signal = new Coro::Signal;
		3312	push @WAIT_FOR_TICK_BEGIN, $signal;
		3313	$signal->wait;
		3314	}
		3315
		3316	my $min = 1e6;#d#
		3317	my $avg = 10;
		3318	$TICK_WATCHER = Event->timer (
		3319	reentrant => 0,
		3320	parked => 1,
		3321	prio => 0,
		3322	at => $NEXT_TICK || $TICK,
		3323	data => WF_AUTOCANCEL,
		3324	cb => sub {
		3325	if ($Coro::current != $Coro::main) {
		3326	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3327	unless ++$bug_warning > 10;
		3328	return;
		3329	}
		3330
		3331	$NOW = $tick_start = Event::time;
		3332
		3333	cf::server_tick; # one server iteration
		3334
		3335	0 && sync_job {#d#
		3336	for(1..10) {
		3337	my $t = Event::time;
		3338	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3339	or die;
		3340
		3341	$map->width (50);
		3342	$map->height (50);
		3343	$map->alloc;
		3344	$map->_load_objects ("/tmp/x.map", 1);
		3345	my $t = Event::time - $t;
		3346
		3347	#next unless $t < 0.0013;#d#
		3348	if ($t < $min) {
		3349	$min = $t;
		3350	}
		3351	$avg = $avg * 0.99 + $t * 0.01;
		3352	}
		3353	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3354	exit 0;
		3355	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1171	};	3356	};
1172	}
1173	};
1174		3357
1175	unshift @INC, $LIBDIR;	3358	$RUNTIME += $TICK;
1176
1177	$TICK_WATCHER = Event->timer (
1178	prio => 1,
1179	async => 1,
1180	at => $NEXT_TICK || 1,
1181	data => WF_AUTOCANCEL,
1182	cb => sub {
1183	cf::server_tick; # one server iteration
1184
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	3359	$NEXT_TICK += $TICK;
		3360
		3361	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3362	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3363	Coro::async_pool {
		3364	write_runtime
		3365	or warn "ERROR: unable to write runtime file: $!";
		3366	};
		3367	}
		3368
		3369	# my $AFTER = Event::time;
		3370	# warn $AFTER - $NOW;#d#
		3371
		3372	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3373	$sig->send;
		3374	}
		3375	while (my $sig = shift @WAIT_FOR_TICK) {
		3376	$sig->send;
		3377	}
		3378
		3379	$NOW = Event::time;
1187		3380
1188	# if we are delayed by four ticks or more, skip them all	3381	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3382	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1190		3383
1191	$TICK_WATCHER->at ($NEXT_TICK);	3384	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	3385	$TICK_WATCHER->start;
		3386
		3387	$LOAD = ($NOW - $tick_start) / $TICK;
		3388	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3389
		3390	_post_tick;
		3391
		3392
1193	},	3393	},
1194	);	3394	);
1195		3395
		3396	{
		3397	BDB::max_poll_time $TICK * 0.1;
		3398	$BDB_POLL_WATCHER = Event->io (
		3399	reentrant => 0,
		3400	fd => BDB::poll_fileno,
		3401	poll => 'r',
		3402	prio => 0,
		3403	data => WF_AUTOCANCEL,
		3404	cb => \&BDB::poll_cb,
		3405	);
		3406	BDB::min_parallel 8;
		3407
		3408	BDB::set_sync_prepare {
		3409	my $status;
		3410	my $current = $Coro::current;
		3411	(
		3412	sub {
		3413	$status = $!;
		3414	$current->ready; undef $current;
		3415	},
		3416	sub {
		3417	Coro::schedule while defined $current;
		3418	$! = $status;
		3419	},
		3420	)
		3421	};
		3422
		3423	unless ($DB_ENV) {
		3424	$DB_ENV = BDB::db_env_create;
		3425
		3426	cf::sync_job {
		3427	eval {
		3428	BDB::db_env_open
		3429	$DB_ENV,
		3430	$BDBDIR,
		3431	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3432	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3433	0666;
		3434
		3435	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3436
		3437	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3438	$DB_ENV->set_lk_detect;
		3439	};
		3440
		3441	cf::cleanup "db_env_open(db): $@" if $@;
		3442	};
		3443	}
		3444	}
		3445
		3446	{
		3447	IO::AIO::min_parallel 8;
		3448
		3449	undef $Coro::AIO::WATCHER;
1196	IO::AIO::max_poll_time $TICK * 0.2;	3450	IO::AIO::max_poll_time $TICK * 0.1;
1197		3451	$AIO_POLL_WATCHER = Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	3452	reentrant => 0,
1199	poll => 'r',
1200	prio => 5,
1201	data => WF_AUTOCANCEL,	3453	data => WF_AUTOCANCEL,
		3454	fd => IO::AIO::poll_fileno,
		3455	poll => 'r',
		3456	prio => 6,
1202	cb => \&IO::AIO::poll_cb);	3457	cb => \&IO::AIO::poll_cb,
		3458	);
		3459	}
		3460
		3461	my $_log_backtrace;
		3462
		3463	sub _log_backtrace {
		3464	my ($msg, @addr) = @_;
		3465
		3466	$msg =~ s/\n//;
		3467
		3468	# limit the # of concurrent backtraces
		3469	if ($_log_backtrace < 2) {
		3470	++$_log_backtrace;
		3471	async {
		3472	my @bt = fork_call {
		3473	@addr = map { sprintf "%x", $_ } @addr;
		3474	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3475	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3476	or die "addr2line: $!";
		3477
		3478	my @funcs;
		3479	my @res = <$fh>;
		3480	chomp for @res;
		3481	while (@res) {
		3482	my ($func, $line) = splice @res, 0, 2, ();
		3483	push @funcs, "[$func] $line";
		3484	}
		3485
		3486	@funcs
		3487	};
		3488
		3489	LOG llevInfo, "[ABT] $msg\n";
		3490	LOG llevInfo, "[ABT] $_\n" for @bt;
		3491	--$_log_backtrace;
		3492	};
		3493	} else {
		3494	LOG llevInfo, "[ABT] $msg\n";
		3495	LOG llevInfo, "[ABT] [suppressed]\n";
		3496	}
		3497	}
		3498
		3499	# load additional modules
		3500	use cf::pod;
		3501
		3502	END { cf::emergency_save }
1203		3503
1204	1	3504	1
1205		3505

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