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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 1.337 by root, Tue Aug 21 00:54:01 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 3.64 ();
		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	use Coro::Util ();
		25
		26	use JSON::XS 1.4 ();
		27	use BDB ();
		28	use Data::Dumper;
		29	use Digest::MD5;
		30	use Fcntl;
11	use YAML::Syck ();	31	use YAML::Syck ();
		32	use IO::AIO 2.32 ();
12	use Time::HiRes;	33	use Time::HiRes;
13	use Event;	34	use Compress::LZF;
		35	use Digest::MD5 ();
		36
		37	# configure various modules to our taste
		38	#
		39	$Storable::canonical = 1; # reduce rsync transfers
		40	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		41	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		42
14	$Event::Eval = 1; # no idea why this is required, but it is	43	$Event::Eval = 1; # no idea why this is required, but it is
15		44
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	45	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	46	$YAML::Syck::ImplicitUnicode = 1;
18		47
19	use strict;	48	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		49
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		51
23	our %COMMAND = ();	52	our %COMMAND = ();
24	our %COMMAND_TIME = ();	53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
26		60
27	_init_vars;	61	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	62	our @EVENT;
30	our $LIBDIR = maps_directory "perl";
31		63
32	our $TICK = MAX_TIME * 1e-6;	64	our $CONFDIR = confdir;
		65	our $DATADIR = datadir;
		66	our $LIBDIR = "$DATADIR/ext";
		67	our $PODDIR = "$DATADIR/pod";
		68	our $MAPDIR = "$DATADIR/" . mapdir;
		69	our $LOCALDIR = localdir;
		70	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		71	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		72	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		73	our $RANDOMDIR = "$LOCALDIR/random";
		74	our $BDBDIR = "$LOCALDIR/db";
		75
		76	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	80	our $NEXT_TICK;
		81	our $NOW;
		82	our $USE_FSYNC = 1; # use fsync to write maps - default off
		83
		84	our $BDB_POLL_WATCHER;
		85	our $DB_ENV;
35		86
36	our %CFG;	87	our %CFG;
37		88
38	our $UPTIME; $UPTIME ||= time;	89	our $UPTIME; $UPTIME ||= time;
		90	our $RUNTIME;
		91
		92	our %PLAYER; # all users
		93	our %MAP; # all maps
		94	our $LINK_MAP; # the special {link} map, which is always available
		95
		96	# used to convert map paths into valid unix filenames by replacing / by ∕
		97	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		98
		99	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		100	our $LOADAVG; # same thing, but with alpha-smoothing
		101	our $tick_start; # for load detecting purposes
		102
		103	binmode STDOUT;
		104	binmode STDERR;
		105
		106	# read virtual server time, if available
		107	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		108	open my $fh, "<", "$LOCALDIR/runtime"
		109	or die "unable to read runtime file: $!";
		110	$RUNTIME = <$fh> + 0.;
		111	}
		112
		113	mkdir $_
		114	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		115
		116	our $EMERGENCY_POSITION;
		117
		118	sub cf::map::normalise;
39		119
40	#############################################################################	120	#############################################################################
41		121
42	=head2 GLOBAL VARIABLES	122	=head2 GLOBAL VARIABLES
43		123
…		…
45		125
46	=item $cf::UPTIME	126	=item $cf::UPTIME
47		127
48	The timestamp of the server start (so not actually an uptime).	128	The timestamp of the server start (so not actually an uptime).
49		129
50	=item $cf::LIBDIR	130	=item $cf::RUNTIME
51		131
52	The perl library directory, where extensions and cf-specific modules can	132	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.	133	every server tick.
		134
		135	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		136	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		137	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		138
		139	Various directories - "/etc", read-only install directory, perl-library
		140	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		141	unique-items directory, player file directory, random maps directory and
		142	database environment.
		143
		144	=item $cf::NOW
		145
		146	The time of the last (current) server tick.
54		147
55	=item $cf::TICK	148	=item $cf::TICK
56		149
57	The interval between server ticks, in seconds.	150	The interval between server ticks, in seconds.
		151
		152	=item $cf::LOADAVG
		153
		154	The current CPU load on the server (alpha-smoothed), as a value between 0
		155	(none) and 1 (overloaded), indicating how much time is spent on processing
		156	objects per tick. Healthy values are < 0.5.
		157
		158	=item $cf::LOAD
		159
		160	The raw value load value from the last tick.
58		161
59	=item %cf::CFG	162	=item %cf::CFG
60		163
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	164	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	165	from wherever your confdir points to.
		166
		167	=item cf::wait_for_tick, cf::wait_for_tick_begin
		168
		169	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		170	returns directly I<after> the tick processing (and consequently, can only wake one process
		171	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		172
		173	=item @cf::INVOKE_RESULTS
		174
		175	This array contains the results of the last C<invoke ()> call. When
		176	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		177	that call.
63		178
64	=back	179	=back
65		180
66	=cut	181	=cut
67		182
68	BEGIN {	183	BEGIN {
69	*CORE::GLOBAL::warn = sub {	184	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	185	my $msg = join "", @_;
		186
71	$msg .= "\n"	187	$msg .= "\n"
72	unless $msg =~ /\n$/;	188	unless $msg =~ /\n$/;
73		189
74	print STDERR "cfperl: $msg";	190	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		191
		192	utf8::encode $msg;
75	LOG llevError, "cfperl: $msg";	193	LOG llevError, $msg;
76	};	194	};
77	}	195	}
78		196
		197	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		198	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		199	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		200	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		201	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		202	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	203	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		204
81	# we bless all objects into (empty) derived classes to force a method lookup	205	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	206	# within the Safe compartment.
83	for my $pkg (qw(	207	for my $pkg (qw(
		208	cf::global cf::attachable
84	cf::object cf::object::player	209	cf::object cf::object::player
85	cf::client_socket cf::player	210	cf::client cf::player
86	cf::arch cf::living	211	cf::arch cf::living
87	cf::map cf::party cf::region	212	cf::map cf::party cf::region
88	)) {	213	)) {
89	no strict 'refs';	214	no strict 'refs';
90	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	215	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
…		…
92		217
93	$Event::DIED = sub {	218	$Event::DIED = sub {
94	warn "error in event callback: @_";	219	warn "error in event callback: @_";
95	};	220	};
96		221
97	my %ext_pkg;	222	#############################################################################
98	my @exts;
99	my @hook;
100		223
101	=head2 UTILITY FUNCTIONS	224	=head2 UTILITY FUNCTIONS
102		225
103	=over 4	226	=over 4
104		227
105	=cut	228	=item dumpval $ref
106		229
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	230	=cut
		231
		232	sub dumpval {
		233	eval {
		234	local $SIG{__DIE__};
		235	my $d;
		236	if (1) {
		237	$d = new Data::Dumper([$_[0]], ["*var"]);
		238	$d->Terse(1);
		239	$d->Indent(2);
		240	$d->Quotekeys(0);
		241	$d->Useqq(1);
		242	#$d->Bless(...);
		243	$d->Seen($_[1]) if @_ > 1;
		244	$d = $d->Dump();
		245	}
		246	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		247	$d
		248	} || "[unable to dump $_[0]: '$@']";
		249	}
108		250
109	=item $ref = cf::from_json $json	251	=item $ref = cf::from_json $json
110		252
111	Converts a JSON string into the corresponding perl data structure.	253	Converts a JSON string into the corresponding perl data structure.
112		254
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	255	=item $json = cf::to_json $ref
121		256
122	Converts a perl data structure into its JSON representation.	257	Converts a perl data structure into its JSON representation.
123		258
124	=cut	259	=cut
125		260
126	sub to_json($) {	261	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	262
128	JSON::Syck::Dump $_[0]	263	sub to_json ($) { $json_coder->encode ($_[0]) }
		264	sub from_json ($) { $json_coder->decode ($_[0]) }
		265
		266	=item cf::lock_wait $string
		267
		268	Wait until the given lock is available. See cf::lock_acquire.
		269
		270	=item my $lock = cf::lock_acquire $string
		271
		272	Wait until the given lock is available and then acquires it and returns
		273	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		274	for example when the coroutine gets canceled), the lock is automatically
		275	returned.
		276
		277	Lock names should begin with a unique identifier (for example, cf::map::find
		278	uses map_find and cf::map::load uses map_load).
		279
		280	=item $locked = cf::lock_active $string
		281
		282	Return true if the lock is currently active, i.e. somebody has locked it.
		283
		284	=cut
		285
		286	our %LOCK;
		287
		288	sub lock_wait($) {
		289	my ($key) = @_;
		290
		291	# wait for lock, if any
		292	while ($LOCK{$key}) {
		293	push @{ $LOCK{$key} }, $Coro::current;
		294	Coro::schedule;
		295	}
		296	}
		297
		298	sub lock_acquire($) {
		299	my ($key) = @_;
		300
		301	# wait, to be sure we are not locked
		302	lock_wait $key;
		303
		304	$LOCK{$key} = [];
		305
		306	Coro::guard {
		307	# wake up all waiters, to be on the safe side
		308	$_->ready for @{ delete $LOCK{$key} };
		309	}
		310	}
		311
		312	sub lock_active($) {
		313	my ($key) = @_;
		314
		315	! ! $LOCK{$key}
		316	}
		317
		318	sub freeze_mainloop {
		319	return unless $TICK_WATCHER->is_active;
		320
		321	my $guard = Coro::guard {
		322	$TICK_WATCHER->start;
		323	};
		324	$TICK_WATCHER->stop;
		325	$guard
		326	}
		327
		328	=item cf::get_slot $time[, $priority[, $name]]
		329
		330	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		331	This call blocks and returns only when you have at least C<$time> seconds
		332	of cpu time till the next tick. The slot is only valid till the next cede.
		333
		334	The optional C<$name> can be used to identify the job to run. It might be
		335	used for statistical purposes and should identify the same time-class.
		336
		337	Useful for short background jobs.
		338
		339	=cut
		340
		341	our @SLOT_QUEUE;
		342	our $SLOT_QUEUE;
		343
		344	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		345	$SLOT_QUEUE = Coro::async {
		346	my $signal = new Coro::Signal;
		347
		348	while () {
		349	next_job:
		350	my $avail = cf::till_tick;
		351	if ($avail > 0.01) {
		352	for (0 .. $#SLOT_QUEUE) {
		353	if ($SLOT_QUEUE[$_][0] < $avail) {
		354	my $job = splice @SLOT_QUEUE, $_, 1, ();
		355	$job->[2]->send;
		356	Coro::cede;
		357	goto next_job;
		358	}
		359	}
		360	}
		361
		362	if (@SLOT_QUEUE) {
		363	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		364	push @cf::WAIT_FOR_TICK, $signal;
		365	$signal->wait;
		366	} else {
		367	Coro::schedule;
		368	}
		369	}
		370	};
		371
		372	sub get_slot($;$$) {
		373	my ($time, $pri, $name) = @_;
		374
		375	$time = $TICK * .6 if $time > $TICK * .6;
		376	my $sig = new Coro::Signal;
		377
		378	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		379	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		380	$SLOT_QUEUE->ready;
		381	$sig->wait;
		382	}
		383
		384	=item cf::async { BLOCK }
		385
		386	Currently the same as Coro::async_pool, meaning you cannot use
		387	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		388	thing you are allowed to do is call C<prio> on it.
		389
		390	=cut
		391
		392	BEGIN { *async = \&Coro::async_pool }
		393
		394	=item cf::sync_job { BLOCK }
		395
		396	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		397	is always able to handle events or runnable, as Crossfire TRT is only
		398	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		399	acceptable.
		400
		401	If it must be done, put the blocking parts into C<sync_job>. This will run
		402	the given BLOCK in another coroutine while waiting for the result. The
		403	server will be frozen during this time, so the block should either finish
		404	fast or be very important.
		405
		406	=cut
		407
		408	sub sync_job(&) {
		409	my ($job) = @_;
		410
		411	if ($Coro::current == $Coro::main) {
		412	my $time = Event::time;
		413
		414	# this is the main coro, too bad, we have to block
		415	# till the operation succeeds, freezing the server :/
		416
		417	# TODO: use suspend/resume instead
		418	# (but this is cancel-safe)
		419	my $freeze_guard = freeze_mainloop;
		420
		421	my $busy = 1;
		422	my @res;
		423
		424	(async {
		425	@res = eval { $job->() };
		426	warn $@ if $@;
		427	undef $busy;
		428	})->prio (Coro::PRIO_MAX);
		429
		430	while ($busy) {
		431	Coro::cede or Event::one_event;
		432	}
		433
		434	$time = Event::time - $time;
		435
		436	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		437	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		438
		439	$tick_start += $time; # do not account sync jobs to server load
		440
		441	wantarray ? @res : $res[0]
		442	} else {
		443	# we are in another coroutine, how wonderful, everything just works
		444
		445	$job->()
		446	}
		447	}
		448
		449	=item $coro = cf::async_ext { BLOCK }
		450
		451	Like async, but this coro is automatically being canceled when the
		452	extension calling this is being unloaded.
		453
		454	=cut
		455
		456	sub async_ext(&) {
		457	my $cb = shift;
		458
		459	my $coro = &Coro::async ($cb);
		460
		461	$coro->on_destroy (sub {
		462	delete $EXT_CORO{$coro+0};
		463	});
		464	$EXT_CORO{$coro+0} = $coro;
		465
		466	$coro
		467	}
		468
		469	=item fork_call { }, $args
		470
		471	Executes the given code block with the given arguments in a seperate
		472	process, returning the results. Everything must be serialisable with
		473	Coro::Storable. May, of course, block. Note that the executed sub may
		474	never block itself or use any form of Event handling.
		475
		476	=cut
		477
		478	sub fork_call(&@) {
		479	my ($cb, @args) = @_;
		480
		481	# we seemingly have to make a local copy of the whole thing,
		482	# otherwise perl prematurely frees the stuff :/
		483	# TODO: investigate and fix (liekly this will be rather laborious)
		484
		485	my @res = Coro::Util::fork_eval {
		486	reset_signals;
		487	&$cb
		488	}, @args;
		489
		490	wantarray ? @res : $res[-1]
		491	}
		492
		493	=item $value = cf::db_get $family => $key
		494
		495	Returns a single value from the environment database.
		496
		497	=item cf::db_put $family => $key => $value
		498
		499	Stores the given C<$value> in the family. It can currently store binary
		500	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		501
		502	=cut
		503
		504	our $DB;
		505
		506	sub db_init {
		507	unless ($DB) {
		508	$DB = BDB::db_create $DB_ENV;
		509
		510	cf::sync_job {
		511	eval {
		512	$DB->set_flags (BDB::CHKSUM);
		513
		514	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		515	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		516	cf::cleanup "db_open(db): $!" if $!;
		517	};
		518	cf::cleanup "db_open(db): $@" if $@;
		519	};
		520	}
		521	}
		522
		523	sub db_get($$) {
		524	my $key = "$_[0]/$_[1]";
		525
		526	cf::sync_job {
		527	BDB::db_get $DB, undef, $key, my $data;
		528
		529	$! ? ()
		530	: $data
		531	}
		532	}
		533
		534	sub db_put($$$) {
		535	BDB::dbreq_pri 4;
		536	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		537	}
		538
		539	=item cf::cache $id => [$paths...], $processversion => $process
		540
		541	Generic caching function that returns the value of the resource $id,
		542	caching and regenerating as required.
		543
		544	This function can block.
		545
		546	=cut
		547
		548	sub cache {
		549	my ($id, $src, $processversion, $process) = @_;
		550
		551	my $meta =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	aio_stat $_
		556	and Carp::croak "$_: $!";
		557
		558	($_, (stat _)[7,9])
		559	} @$src;
		560
		561	my $dbmeta = db_get cache => "$id/meta";
		562	if ($dbmeta ne $meta) {
		563	# changed, we may need to process
		564
		565	my @data;
		566	my $md5;
		567
		568	for (0 .. $#$src) {
		569	0 <= aio_load $src->[$_], $data[$_]
		570	or Carp::croak "$src->[$_]: $!";
		571	}
		572
		573	# if processing is expensive, check
		574	# checksum first
		575	if (1) {
		576	$md5 =
		577	join "\x00",
		578	$processversion,
		579	map {
		580	Coro::cede;
		581	($src->[$_], Digest::MD5::md5_hex $data[$_])
		582	} 0.. $#$src;
		583
		584
		585	my $dbmd5 = db_get cache => "$id/md5";
		586	if ($dbmd5 eq $md5) {
		587	db_put cache => "$id/meta", $meta;
		588
		589	return db_get cache => "$id/data";
		590	}
		591	}
		592
		593	my $t1 = Time::HiRes::time;
		594	my $data = $process->(\@data);
		595	my $t2 = Time::HiRes::time;
		596
		597	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		598
		599	db_put cache => "$id/data", $data;
		600	db_put cache => "$id/md5" , $md5;
		601	db_put cache => "$id/meta", $meta;
		602
		603	return $data;
		604	}
		605
		606	db_get cache => "$id/data"
		607	}
		608
		609	=item cf::datalog type => key => value, ...
		610
		611	Log a datalog packet of the given type with the given key-value pairs.
		612
		613	=cut
		614
		615	sub datalog($@) {
		616	my ($type, %kv) = @_;
		617	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	618	}
130		619
131	=back	620	=back
132		621
133	=cut	622	=cut
134		623
135	#############################################################################	624	#############################################################################
136		625
137	=head2 EVENTS AND OBJECT ATTACHMENTS	626	=head2 ATTACHABLE OBJECTS
		627
		628	Many objects in crossfire are so-called attachable objects. That means you can
		629	attach callbacks/event handlers (a collection of which is called an "attachment")
		630	to it. All such attachable objects support the following methods.
		631
		632	In the following description, CLASS can be any of C<global>, C<object>
		633	C<player>, C<client> or C<map> (i.e. the attachable objects in
		634	Crossfire TRT).
138		635
139	=over 4	636	=over 4
140		637
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...)	638	=item $attachable->attach ($attachment, key => $value...)
154		639
155	=item $map->detach ($attachment)	640	=item $attachable->detach ($attachment)
156		641
157	Attach/detach a pre-registered attachment to a map.	642	Attach/detach a pre-registered attachment to a specific object and give it
		643	the specified key/value pairs as arguments.
158		644
159	=item $bool = $object->attached ($name)	645	Example, attach a minesweeper attachment to the given object, making it a
		646	10x10 minesweeper game:
160		647
161	=item $bool = $player->attached ($name)	648	$obj->attach (minesweeper => width => 10, height => 10);
162		649
163	=item $bool = $map->attached ($name)	650	=item $bool = $attachable->attached ($name)
164		651
165	Checks wether the named attachment is currently attached to the object.	652	Checks wether the named attachment is currently attached to the object.
166		653
167	=item cf::attach_global ...	654	=item cf::CLASS->attach ...
168		655
169	Attach handlers for global events.	656	=item cf::CLASS->detach ...
170		657
171	This and all following C<attach_*>-functions expect any number of the	658	Define an anonymous attachment and attach it to all objects of the given
172	following handler/hook descriptions:	659	CLASS. See the next function for an explanation of its arguments.
		660
		661	You can attach to global events by using the C<cf::global> class.
		662
		663	Example, log all player logins:
		664
		665	cf::player->attach (
		666	on_login => sub {
		667	my ($pl) = @_;
		668	...
		669	},
		670	);
		671
		672	Example, attach to the jeweler skill:
		673
		674	cf::object->attach (
		675	type => cf::SKILL,
		676	subtype => cf::SK_JEWELER,
		677	on_use_skill => sub {
		678	my ($sk, $ob, $part, $dir, $msg) = @_;
		679	...
		680	},
		681	);
		682
		683	=item cf::CLASS::attachment $name, ...
		684
		685	Register an attachment by C<$name> through which attachable objects of the
		686	given CLASS can refer to this attachment.
		687
		688	Some classes such as crossfire maps and objects can specify attachments
		689	that are attached at load/instantiate time, thus the need for a name.
		690
		691	These calls expect any number of the following handler/hook descriptions:
173		692
174	=over 4	693	=over 4
175		694
176	=item prio => $number	695	=item prio => $number
177		696
…		…
179	by another C<prio> setting). Lower priority handlers get executed	698	by another C<prio> setting). Lower priority handlers get executed
180	earlier. The default priority is C<0>, and many built-in handlers are	699	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	700	registered at priority C<-1000>, so lower priorities should not be used
182	unless you know what you are doing.	701	unless you know what you are doing.
183		702
		703	=item type => $type
		704
		705	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		706	given type of objects only (the additional parameter C<subtype> can be
		707	used to further limit to the given subtype).
		708
184	=item on_I<event> => \&cb	709	=item on_I<event> => \&cb
185		710
186	Call the given code reference whenever the named event happens (event is	711	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	712	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	713	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	722	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	723	object/class are recognised.
199		724
200	=back	725	=back
201		726
202	=item cf::attach_to_type $object_type, $subtype, ...	727	Example, define an attachment called "sockpuppet" that calls the given
		728	event handler when a monster attacks:
203		729
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	730	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	731	on_skill_attack => sub {
206	type.	732	my ($self, $victim) = @_;
207		733	...
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	}	734	}
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	735	}
429	}
430		736
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	737	=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		738
457	Just because you have a perl object does not mean that the corresponding	739	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	740	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	741	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	742	can be used to test for existence of the C object part without causing an
461	exception.	743	exception.
462		744
		745	=cut
		746
		747	# the following variables are defined in .xs and must not be re-created
		748	our @CB_GLOBAL = (); # registry for all global events
		749	our @CB_ATTACHABLE = (); # registry for all attachables
		750	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		751	our @CB_PLAYER = ();
		752	our @CB_CLIENT = ();
		753	our @CB_TYPE = (); # registry for type (cf-object class) based events
		754	our @CB_MAP = ();
		755
		756	my %attachment;
		757
		758	sub cf::attachable::thawer_merge {
		759	# simply override everything except _meta
		760	local $_[0]{_meta};
		761	%{$_[0]} = %{$_[1]};
		762	}
		763
		764	sub _attach_cb($$$$) {
		765	my ($registry, $event, $prio, $cb) = @_;
		766
		767	use sort 'stable';
		768
		769	$cb = [$prio, $cb];
		770
		771	@{$registry->[$event]} = sort
		772	{ $a->[0] cmp $b->[0] }
		773	@{$registry->[$event] || []}, $cb;
		774	}
		775
		776	# hack
		777	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		778
		779	# attach handles attaching event callbacks
		780	# the only thing the caller has to do is pass the correct
		781	# registry (== where the callback attaches to).
		782	sub _attach {
		783	my ($registry, $klass, @arg) = @_;
		784
		785	my $object_type;
		786	my $prio = 0;
		787	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		788
		789	#TODO: get rid of this hack
		790	if ($attachable_klass{$klass}) {
		791	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		792	}
		793
		794	while (@arg) {
		795	my $type = shift @arg;
		796
		797	if ($type eq "prio") {
		798	$prio = shift @arg;
		799
		800	} elsif ($type eq "type") {
		801	$object_type = shift @arg;
		802	$registry = $CB_TYPE[$object_type] ||= [];
		803
		804	} elsif ($type eq "subtype") {
		805	defined $object_type or Carp::croak "subtype specified without type";
		806	my $object_subtype = shift @arg;
		807	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		808
		809	} elsif ($type eq "package") {
		810	my $pkg = shift @arg;
		811
		812	while (my ($name, $id) = each %cb_id) {
		813	if (my $cb = $pkg->can ($name)) {
		814	_attach_cb $registry, $id, $prio, $cb;
		815	}
		816	}
		817
		818	} elsif (exists $cb_id{$type}) {
		819	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		820
		821	} elsif (ref $type) {
		822	warn "attaching objects not supported, ignoring.\n";
		823
		824	} else {
		825	shift @arg;
		826	warn "attach argument '$type' not supported, ignoring.\n";
		827	}
		828	}
		829	}
		830
		831	sub _object_attach {
		832	my ($obj, $name, %arg) = @_;
		833
		834	return if exists $obj->{_attachment}{$name};
		835
		836	if (my $attach = $attachment{$name}) {
		837	my $registry = $obj->registry;
		838
		839	for (@$attach) {
		840	my ($klass, @attach) = @$_;
		841	_attach $registry, $klass, @attach;
		842	}
		843
		844	$obj->{$name} = \%arg;
		845	} else {
		846	warn "object uses attachment '$name' which is not available, postponing.\n";
		847	}
		848
		849	$obj->{_attachment}{$name} = undef;
		850	}
		851
		852	sub cf::attachable::attach {
		853	if (ref $_[0]) {
		854	_object_attach @_;
		855	} else {
		856	_attach shift->_attach_registry, @_;
		857	}
		858	_recalc_want;
		859	};
		860
		861	# all those should be optimised
		862	sub cf::attachable::detach {
		863	my ($obj, $name) = @_;
		864
		865	if (ref $obj) {
		866	delete $obj->{_attachment}{$name};
		867	reattach ($obj);
		868	} else {
		869	Carp::croak "cannot, currently, detach class attachments";
		870	}
		871	_recalc_want;
		872	};
		873
		874	sub cf::attachable::attached {
		875	my ($obj, $name) = @_;
		876
		877	exists $obj->{_attachment}{$name}
		878	}
		879
		880	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		881	eval "#line " . __LINE__ . " 'cf.pm'
		882	sub cf::\L$klass\E::_attach_registry {
		883	(\\\@CB_$klass, KLASS_$klass)
		884	}
		885
		886	sub cf::\L$klass\E::attachment {
		887	my \$name = shift;
		888
		889	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		890	}
		891	";
		892	die if $@;
		893	}
		894
		895	our $override;
		896	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		897
		898	sub override {
		899	$override = 1;
		900	@INVOKE_RESULTS = (@_);
		901	}
		902
		903	sub do_invoke {
		904	my $event = shift;
		905	my $callbacks = shift;
		906
		907	@INVOKE_RESULTS = ();
		908
		909	local $override;
		910
		911	for (@$callbacks) {
		912	eval { &{$_->[1]} };
		913
		914	if ($@) {
		915	warn "$@";
		916	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		917	override;
		918	}
		919
		920	return 1 if $override;
		921	}
		922
		923	0
		924	}
		925
		926	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		927
		928	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		929
		930	Generate an object-specific event with the given arguments.
		931
		932	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		933	removed in future versions), and there is no public API to access override
		934	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		935
463	=back	936	=back
464		937
465	=cut	938	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		939
471	#############################################################################	940	#############################################################################
472	# object support	941	# object support
		942	#
473		943
474	sub instantiate {	944	sub _can_merge {
475	my ($obj, $data) = @_;	945	my ($ob1, $ob2) = @_;
476		946
477	$data = from_json $data;	947	local $Storable::canonical = 1;
		948	my $fob1 = Storable::freeze $ob1;
		949	my $fob2 = Storable::freeze $ob2;
478		950
479	for (@$data) {	951	$fob1 eq $fob2
480	my ($name, $args) = @$_;
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}	952	}
485		953
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	954	sub reattach {
		955	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	956	my ($obj) = @_;
		957
		958	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		959
489	my $registry = $obj->registry;	960	my $registry = $obj->registry;
490		961
491	@$registry = ();	962	@$registry = ();
492		963
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	964	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		965
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	966	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	967	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	968	for (@$attach) {
498	my ($klass, @attach) = @$_;	969	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	970	_attach $registry, $klass, @attach;
500	}	971	}
501	} else {	972	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	973	warn "object uses attachment '$name' that is not available, postponing.\n";
503	}	974	}
504	}	975	}
505	}	976	}
506		977
507	sub object_freezer_save {	978	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	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	979	prio => -1000000,
		980	on_instantiate => sub {
		981	my ($obj, $data) = @_;
		982
		983	$data = from_json $data;
		984
		985	for (@$data) {
		986	my ($name, $args) = @$_;
		987
		988	$obj->attach ($name, %{$args || {} });
		989	}
		990	},
		991	on_reattach => \&reattach,
567	on_clone => sub {	992	on_clone => sub {
568	my ($src, $dst) = @_;	993	my ($src, $dst) = @_;
569		994
570	@{$dst->registry} = @{$src->registry};	995	@{$dst->registry} = @{$src->registry};
571		996
572	%$dst = %$src;	997	%$dst = %$src;
573		998
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	999	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	1000	if exists $src->{_attachment};
576	},	1001	},
577	;	1002	);
		1003
		1004	sub object_freezer_save {
		1005	my ($filename, $rdata, $objs) = @_;
		1006
		1007	sync_job {
		1008	if (length $$rdata) {
		1009	warn sprintf "saving %s (%d,%d)\n",
		1010	$filename, length $$rdata, scalar @$objs;
		1011
		1012	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1013	chmod SAVE_MODE, $fh;
		1014	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1015	aio_fsync $fh if $cf::USE_FSYNC;
		1016	close $fh;
		1017
		1018	if (@$objs) {
		1019	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1020	chmod SAVE_MODE, $fh;
		1021	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1022	aio_write $fh, 0, (length $data), $data, 0;
		1023	aio_fsync $fh if $cf::USE_FSYNC;
		1024	close $fh;
		1025	aio_rename "$filename.pst~", "$filename.pst";
		1026	}
		1027	} else {
		1028	aio_unlink "$filename.pst";
		1029	}
		1030
		1031	aio_rename "$filename~", $filename;
		1032	} else {
		1033	warn "FATAL: $filename~: $!\n";
		1034	}
		1035	} else {
		1036	aio_unlink $filename;
		1037	aio_unlink "$filename.pst";
		1038	}
		1039	}
		1040	}
		1041
		1042	sub object_freezer_as_string {
		1043	my ($rdata, $objs) = @_;
		1044
		1045	use Data::Dumper;
		1046
		1047	$$rdata . Dumper $objs
		1048	}
		1049
		1050	sub object_thawer_load {
		1051	my ($filename) = @_;
		1052
		1053	my ($data, $av);
		1054
		1055	(aio_load $filename, $data) >= 0
		1056	or return;
		1057
		1058	unless (aio_stat "$filename.pst") {
		1059	(aio_load "$filename.pst", $av) >= 0
		1060	or return;
		1061	$av = eval { (Storable::thaw $av)->{objs} };
		1062	}
		1063
		1064	warn sprintf "loading %s (%d)\n",
		1065	$filename, length $data, scalar @{$av || []};
		1066	return ($data, $av);
		1067	}
		1068
		1069	=head2 COMMAND CALLBACKS
		1070
		1071	=over 4
		1072
		1073	=cut
578		1074
579	#############################################################################	1075	#############################################################################
580	# command handling &c	1076	# command handling &c
581		1077
582	=item cf::register_command $name => \&callback($ob,$args);	1078	=item cf::register_command $name => \&callback($ob,$args);
…		…
595	push @{ $COMMAND{$name} }, [$caller, $cb];	1091	push @{ $COMMAND{$name} }, [$caller, $cb];
596	}	1092	}
597		1093
598	=item cf::register_extcmd $name => \&callback($pl,$packet);	1094	=item cf::register_extcmd $name => \&callback($pl,$packet);
599		1095
600	Register a callbackf ro execution when the client sends an extcmd packet.	1096	Register a callback for execution when the client sends an (synchronous)
		1097	extcmd packet. Ext commands will be processed in the order they are
		1098	received by the server, like other user commands. The first argument is
		1099	the logged-in player. Ext commands can only be processed after a player
		1100	has logged in successfully.
601		1101
602	If the callback returns something, it is sent back as if reply was being	1102	If the callback returns something, it is sent back as if reply was being
603	called.	1103	called.
604		1104
		1105	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1106
		1107	Register a callback for execution when the client sends an (asynchronous)
		1108	exticmd packet. Exti commands are processed by the server as soon as they
		1109	are received, i.e. out of order w.r.t. other commands. The first argument
		1110	is a client socket. Exti commands can be received anytime, even before
		1111	log-in.
		1112
		1113	If the callback returns something, it is sent back as if reply was being
		1114	called.
		1115
605	=cut	1116	=cut
606		1117
607	sub register_extcmd {	1118	sub register_extcmd {
608	my ($name, $cb) = @_;	1119	my ($name, $cb) = @_;
609		1120
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	1121	$EXTCMD{$name} = $cb;
614	}	1122	}
615		1123
616	attach_to_players	1124	sub register_exticmd {
		1125	my ($name, $cb) = @_;
		1126
		1127	$EXTICMD{$name} = $cb;
		1128	}
		1129
		1130	cf::player->attach (
617	on_command => sub {	1131	on_command => sub {
618	my ($pl, $name, $params) = @_;	1132	my ($pl, $name, $params) = @_;
619		1133
620	my $cb = $COMMAND{$name}	1134	my $cb = $COMMAND{$name}
621	or return;	1135	or return;
…		…
627	cf::override;	1141	cf::override;
628	},	1142	},
629	on_extcmd => sub {	1143	on_extcmd => sub {
630	my ($pl, $buf) = @_;	1144	my ($pl, $buf) = @_;
631		1145
632	my $msg = eval { from_json $buf };	1146	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
633		1147
634	if (ref $msg) {	1148	if (ref $msg) {
		1149	my ($type, $reply, @payload) =
		1150	"ARRAY" eq ref $msg
		1151	? @$msg
		1152	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1153
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1154	if (my $cb = $EXTCMD{$type}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	1155	my @reply = $cb->($pl, @payload);
		1156
637	$pl->ext_reply ($msg->{msgid}, %reply);	1157	$pl->ext_reply ($reply, @reply)
638	}	1158	if $reply;
639	}	1159	}
640	} else {	1160	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1161	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}	1162	}
643		1163
644	cf::override;	1164	cf::override;
645	},	1165	},
646	;	1166	);
		1167
		1168	sub load_extensions {
		1169	cf::sync_job {
		1170	my %todo;
		1171
		1172	for my $path (<$LIBDIR/*.ext>) {
		1173	next unless -r $path;
		1174
		1175	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1176	my $base = $1;
		1177	my $pkg = $1;
		1178	$pkg =~ s/[^[:word:]]/_/g;
		1179	$pkg = "ext::$pkg";
		1180
		1181	open my $fh, "<:utf8", $path
		1182	or die "$path: $!";
		1183
		1184	my $source = do { local $/; <$fh> };
		1185
		1186	my %ext = (
		1187	path => $path,
		1188	base => $base,
		1189	pkg => $pkg,
		1190	);
		1191
		1192	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1193	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1194
		1195	$ext{source} =
		1196	"package $pkg; use strict; use utf8;\n"
		1197	. "#line 1 \"$path\"\n{\n"
		1198	. $source
		1199	. "\n};\n1";
		1200
		1201	$todo{$base} = \%ext;
		1202	}
		1203
		1204	my %done;
		1205	while (%todo) {
		1206	my $progress;
		1207
		1208	while (my ($k, $v) = each %todo) {
		1209	for (split /,\s*/, $v->{meta}{depends}) {
		1210	goto skip
		1211	unless exists $done{$_};
		1212	}
		1213
		1214	warn "... loading '$k' into '$v->{pkg}'\n";
		1215
		1216	unless (eval $v->{source}) {
		1217	my $msg = $@ ? "$v->{path}: $@\n"
		1218	: "$v->{base}: extension inactive.\n";
		1219
		1220	if (exists $v->{meta}{mandatory}) {
		1221	warn $msg;
		1222	warn "mandatory extension failed to load, exiting.\n";
		1223	exit 1;
		1224	}
		1225
		1226	warn $msg;
		1227	}
		1228
		1229	$done{$k} = delete $todo{$k};
		1230	push @EXTS, $v->{pkg};
		1231	$progress = 1;
		1232	}
		1233
		1234	skip:
		1235	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1236	unless $progress;
		1237	}
		1238	};
		1239	}
		1240
		1241	#############################################################################
		1242
		1243	=back
		1244
		1245	=head2 CORE EXTENSIONS
		1246
		1247	Functions and methods that extend core crossfire objects.
		1248
		1249	=cut
		1250
		1251	package cf::player;
		1252
		1253	use Coro::AIO;
		1254
		1255	=head3 cf::player
		1256
		1257	=over 4
		1258
		1259	=item cf::player::find $login
		1260
		1261	Returns the given player object, loading it if necessary (might block).
		1262
		1263	=cut
		1264
		1265	sub playerdir($) {
		1266	"$PLAYERDIR/"
		1267	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1268	}
		1269
		1270	sub path($) {
		1271	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1272
		1273	(playerdir $login) . "/playerdata"
		1274	}
		1275
		1276	sub find_active($) {
		1277	$cf::PLAYER{$_[0]}
		1278	and $cf::PLAYER{$_[0]}->active
		1279	and $cf::PLAYER{$_[0]}
		1280	}
		1281
		1282	sub exists($) {
		1283	my ($login) = @_;
		1284
		1285	$cf::PLAYER{$login}
		1286	or cf::sync_job { !aio_stat path $login }
		1287	}
		1288
		1289	sub find($) {
		1290	return $cf::PLAYER{$_[0]} || do {
		1291	my $login = $_[0];
		1292
		1293	my $guard = cf::lock_acquire "user_find:$login";
		1294
		1295	$cf::PLAYER{$_[0]} || do {
		1296	# rename old playerfiles to new ones
		1297	#TODO: remove when no longer required
		1298	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1299	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1300	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1301	aio_unlink +(playerdir $login) . "/$login.pl";
		1302
		1303	my $pl = load_pl path $login
		1304	or return;
		1305	$cf::PLAYER{$login} = $pl
		1306	}
		1307	}
		1308	}
		1309
		1310	sub save($) {
		1311	my ($pl) = @_;
		1312
		1313	return if $pl->{deny_save};
		1314
		1315	my $path = path $pl;
		1316	my $guard = cf::lock_acquire "user_save:$path";
		1317
		1318	return if $pl->{deny_save};
		1319
		1320	aio_mkdir playerdir $pl, 0770;
		1321	$pl->{last_save} = $cf::RUNTIME;
		1322
		1323	$pl->save_pl ($path);
		1324	Coro::cede;
		1325	}
		1326
		1327	sub new($) {
		1328	my ($login) = @_;
		1329
		1330	my $self = create;
		1331
		1332	$self->ob->name ($login);
		1333	$self->{deny_save} = 1;
		1334
		1335	$cf::PLAYER{$login} = $self;
		1336
		1337	$self
		1338	}
		1339
		1340	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1341
		1342	=cut
		1343
		1344	sub send_msg {
		1345	my $ns = shift->ns
		1346	or return;
		1347	$ns->send_msg (@_);
		1348	}
		1349
		1350	=item $pl->quit_character
		1351
		1352	Nukes the player without looking back. If logged in, the connection will
		1353	be destroyed. May block for a long time.
		1354
		1355	=cut
		1356
		1357	sub quit_character {
		1358	my ($pl) = @_;
		1359
		1360	my $name = $pl->ob->name;
		1361
		1362	$pl->{deny_save} = 1;
		1363	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1364
		1365	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1366	$pl->deactivate;
		1367	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1368	$pl->ns->destroy if $pl->ns;
		1369
		1370	my $path = playerdir $pl;
		1371	my $temp = "$path~$cf::RUNTIME~deleting~";
		1372	aio_rename $path, $temp;
		1373	delete $cf::PLAYER{$pl->ob->name};
		1374	$pl->destroy;
		1375
		1376	my $prefix = qr<^~\Q$name\E/>;
		1377
		1378	# nuke player maps
		1379	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1380
		1381	IO::AIO::aio_rmtree $temp;
		1382	}
		1383
		1384	=item $pl->kick
		1385
		1386	Kicks a player out of the game. This destroys the connection.
		1387
		1388	=cut
		1389
		1390	sub kick {
		1391	my ($pl, $kicker) = @_;
		1392
		1393	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1394	$pl->killer ("kicked");
		1395	$pl->ns->destroy;
		1396	}
		1397
		1398	=item cf::player::list_logins
		1399
		1400	Returns am arrayref of all valid playernames in the system, can take a
		1401	while and may block, so not sync_job-capable, ever.
		1402
		1403	=cut
		1404
		1405	sub list_logins {
		1406	my $dirs = aio_readdir $PLAYERDIR
		1407	or return [];
		1408
		1409	my @logins;
		1410
		1411	for my $login (@$dirs) {
		1412	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1413	aio_read $fh, 0, 512, my $buf, 0 or next;
		1414	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1415
		1416	utf8::decode $login;
		1417	push @logins, $login;
		1418	}
		1419
		1420	\@logins
		1421	}
		1422
		1423	=item $player->maps
		1424
		1425	Returns an arrayref of map paths that are private for this
		1426	player. May block.
		1427
		1428	=cut
		1429
		1430	sub maps($) {
		1431	my ($pl) = @_;
		1432
		1433	$pl = ref $pl ? $pl->ob->name : $pl;
		1434
		1435	my $files = aio_readdir playerdir $pl
		1436	or return;
		1437
		1438	my @paths;
		1439
		1440	for (@$files) {
		1441	utf8::decode $_;
		1442	next if /\.(?:pl|pst)$/;
		1443	next unless /^$PATH_SEP/o;
		1444
		1445	push @paths, cf::map::normalise "~$pl/$_";
		1446	}
		1447
		1448	\@paths
		1449	}
		1450
		1451	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1452
		1453	Expand crossfire pod fragments into protocol xml.
		1454
		1455	=cut
		1456
		1457	sub expand_cfpod {
		1458	((my $self), (local $_)) = @_;
		1459
		1460	# escape & and <
		1461	s/&/&amp;/g;
		1462	s/(?<![BIUGH])</&lt;/g;
		1463
		1464	# this is buggy, it needs to properly take care of nested <'s
		1465
		1466	1 while
		1467	# replace B<>, I<>, U<> etc.
		1468	s/B<([^\>]*)>/<b>$1<\/b>/
		1469	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1470	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1471	# replace G<male|female> tags
		1472	|| s{G<([^>|]*)\|([^>]*)>}{
		1473	$self->gender ? $2 : $1
		1474	}ge
		1475	# replace H<hint text>
		1476	|| s{H<([^\>]*)>}
		1477	{
		1478	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1479	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1480	"")
		1481	[$self->{hintmode}]
		1482	}ge;
		1483
		1484	# create single paragraphs (very hackish)
		1485	s/(?<=\S)\n(?=\w)/ /g;
		1486
		1487	# compress some whitespace
		1488	s/\s+\n/\n/g; # ws line-ends
		1489	s/\n\n+/\n/g; # double lines
		1490	s/^\n+//; # beginning lines
		1491	s/\n+$//; # ending lines
		1492
		1493	$_
		1494	}
		1495
		1496	sub hintmode {
		1497	$_[0]{hintmode} = $_[1] if @_ > 1;
		1498	$_[0]{hintmode}
		1499	}
		1500
		1501	=item $player->ext_reply ($msgid, @msg)
		1502
		1503	Sends an ext reply to the player.
		1504
		1505	=cut
		1506
		1507	sub ext_reply($$@) {
		1508	my ($self, $id, @msg) = @_;
		1509
		1510	$self->ns->ext_reply ($id, @msg)
		1511	}
		1512
		1513	=item $player->ext_msg ($type, @msg)
		1514
		1515	Sends an ext event to the client.
		1516
		1517	=cut
		1518
		1519	sub ext_msg($$@) {
		1520	my ($self, $type, @msg) = @_;
		1521
		1522	$self->ns->ext_msg ($type, @msg);
		1523	}
		1524
		1525	=head3 cf::region
		1526
		1527	=over 4
		1528
		1529	=cut
		1530
		1531	package cf::region;
		1532
		1533	=item cf::region::find_by_path $path
		1534
		1535	Tries to decuce the likely region for a map knowing only its path.
		1536
		1537	=cut
		1538
		1539	sub find_by_path($) {
		1540	my ($path) = @_;
		1541
		1542	my ($match, $specificity);
		1543
		1544	for my $region (list) {
		1545	if ($region->{match} && $path =~ $region->{match}) {
		1546	($match, $specificity) = ($region, $region->specificity)
		1547	if $region->specificity > $specificity;
		1548	}
		1549	}
		1550
		1551	$match
		1552	}
		1553
		1554	=back
		1555
		1556	=head3 cf::map
		1557
		1558	=over 4
		1559
		1560	=cut
		1561
		1562	package cf::map;
		1563
		1564	use Fcntl;
		1565	use Coro::AIO;
		1566
		1567	use overload
		1568	'""' => \&as_string,
		1569	fallback => 1;
		1570
		1571	our $MAX_RESET = 3600;
		1572	our $DEFAULT_RESET = 3000;
		1573
		1574	sub generate_random_map {
		1575	my ($self, $rmp) = @_;
		1576	# mit "rum" bekleckern, nicht
		1577	$self->_create_random_map (
		1578	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1579	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1580	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1581	$rmp->{exit_on_final_map},
		1582	$rmp->{xsize}, $rmp->{ysize},
		1583	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1584	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1585	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1586	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1587	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1588	(cf::region::find $rmp->{region}), $rmp->{custom}
		1589	)
		1590	}
		1591
		1592	=item cf::map->register ($regex, $prio)
		1593
		1594	Register a handler for the map path matching the given regex at the
		1595	givne priority (higher is better, built-in handlers have priority 0, the
		1596	default).
		1597
		1598	=cut
647		1599
648	sub register {	1600	sub register {
		1601	my (undef, $regex, $prio) = @_;
		1602	my $pkg = caller;
		1603
		1604	no strict;
		1605	push @{"$pkg\::ISA"}, __PACKAGE__;
		1606
		1607	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1608	}
		1609
		1610	# also paths starting with '/'
		1611	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1612
		1613	sub thawer_merge {
649	my ($base, $pkg) = @_;	1614	my ($self, $merge) = @_;
650		1615
651	#TODO	1616	# we have to keep some variables in memory intact
652	}	1617	local $self->{path};
		1618	local $self->{load_path};
653		1619
654	sub load_extension {	1620	$self->SUPER::thawer_merge ($merge);
		1621	}
		1622
		1623	sub normalise {
655	my ($path) = @_;	1624	my ($path, $base) = @_;
656		1625
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1626	$path = "$path"; # make sure its a string
658	my $base = $1;
659	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";
662		1627
663	warn "loading '$path' into '$pkg'\n";	1628	$path =~ s/\.map$//;
664		1629
665	open my $fh, "<:utf8", $path	1630	# map plan:
666	or die "$path: $!";	1631	#
		1632	# /! non-realised random map exit (special hack!)
		1633	# {... are special paths that are not being touched
		1634	# ?xxx/... are special absolute paths
		1635	# ?random/... random maps
		1636	# /... normal maps
		1637	# ~user/... per-player map of a specific user
667		1638
668	my $source =	1639	$path =~ s/$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		1640
674	eval $source	1641	# treat it as relative path if it starts with
675	or die $@ ? "$path: $@\n"	1642	# something that looks reasonable
676	: "extension disabled.\n";	1643	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1644	$base or Carp::carp "normalise called with relative path and no base: '$path'";
677		1645
678	push @exts, $pkg;	1646	$base =~ s{[^/]+/?$}{};
679	$ext_pkg{$base} = $pkg;	1647	$path = "$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]{$pkg};
696	# }	1648	}
697		1649
698	# remove commands	1650	for ($path) {
699	for my $name (keys %COMMAND) {	1651	redo if s{//}{/};
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1652	redo if s{/\.?/}{/};
		1653	redo if s{/[^/]+/\.\./}{/};
		1654	}
701		1655
702	if (@cb) {	1656	$path
703	$COMMAND{$name} = \@cb;	1657	}
		1658
		1659	sub new_from_path {
		1660	my (undef, $path, $base) = @_;
		1661
		1662	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1663
		1664	$path = normalise $path, $base;
		1665
		1666	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1667	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1668	my $self = bless cf::map::new, $pkg;
		1669	$self->{path} = $path; $self->path ($path);
		1670	$self->init; # pass $1 etc.
		1671	return $self;
		1672	}
		1673	}
		1674
		1675	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1676	()
		1677	}
		1678
		1679	sub init {
		1680	my ($self) = @_;
		1681
		1682	$self
		1683	}
		1684
		1685	sub as_string {
		1686	my ($self) = @_;
		1687
		1688	"$self->{path}"
		1689	}
		1690
		1691	# the displayed name, this is a one way mapping
		1692	sub visible_name {
		1693	&as_string
		1694	}
		1695
		1696	# the original (read-only) location
		1697	sub load_path {
		1698	my ($self) = @_;
		1699
		1700	"$MAPDIR/$self->{path}.map"
		1701	}
		1702
		1703	# the temporary/swap location
		1704	sub save_path {
		1705	my ($self) = @_;
		1706
		1707	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1708	"$TMPDIR/$path.map"
		1709	}
		1710
		1711	# the unique path, undef == no special unique path
		1712	sub uniq_path {
		1713	my ($self) = @_;
		1714
		1715	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1716	"$UNIQUEDIR/$path"
		1717	}
		1718
		1719	# and all this just because we cannot iterate over
		1720	# all maps in C++...
		1721	sub change_all_map_light {
		1722	my ($change) = @_;
		1723
		1724	$_->change_map_light ($change)
		1725	for grep $_->outdoor, values %cf::MAP;
		1726	}
		1727
		1728	sub decay_objects {
		1729	my ($self) = @_;
		1730
		1731	return if $self->{deny_reset};
		1732
		1733	$self->do_decay_objects;
		1734	}
		1735
		1736	sub unlink_save {
		1737	my ($self) = @_;
		1738
		1739	utf8::encode (my $save = $self->save_path);
		1740	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1741	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1742	}
		1743
		1744	sub load_header_from($) {
		1745	my ($self, $path) = @_;
		1746
		1747	utf8::encode $path;
		1748	#aio_open $path, O_RDONLY, 0
		1749	# or return;
		1750
		1751	$self->_load_header ($path)
		1752	or return;
		1753
		1754	$self->{load_path} = $path;
		1755
		1756	1
		1757	}
		1758
		1759	sub load_header_orig {
		1760	my ($self) = @_;
		1761
		1762	$self->load_header_from ($self->load_path)
		1763	}
		1764
		1765	sub load_header_temp {
		1766	my ($self) = @_;
		1767
		1768	$self->load_header_from ($self->save_path)
		1769	}
		1770
		1771	sub prepare_temp {
		1772	my ($self) = @_;
		1773
		1774	$self->last_access ((delete $self->{last_access})
		1775	|| $cf::RUNTIME); #d#
		1776	# safety
		1777	$self->{instantiate_time} = $cf::RUNTIME
		1778	if $self->{instantiate_time} > $cf::RUNTIME;
		1779	}
		1780
		1781	sub prepare_orig {
		1782	my ($self) = @_;
		1783
		1784	$self->{load_original} = 1;
		1785	$self->{instantiate_time} = $cf::RUNTIME;
		1786	$self->last_access ($cf::RUNTIME);
		1787	$self->instantiate;
		1788	}
		1789
		1790	sub load_header {
		1791	my ($self) = @_;
		1792
		1793	if ($self->load_header_temp) {
		1794	$self->prepare_temp;
704	} else {	1795	} else {
705	delete $COMMAND{$name};	1796	$self->load_header_orig
706	}	1797	or return;
		1798	$self->prepare_orig;
		1799	}
		1800
		1801	$self->{deny_reset} = 1
		1802	if $self->no_reset;
		1803
		1804	$self->default_region (cf::region::find_by_path $self->{path})
		1805	unless $self->default_region;
		1806
707	}	1807	1
		1808	}
708		1809
709	# remove extcmds	1810	sub find;
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1811	sub find {
711	delete $EXTCMD{$name};	1812	my ($path, $origin) = @_;
		1813
		1814	$path = normalise $path, $origin && $origin->path;
		1815
		1816	cf::lock_wait "map_find:$path";
		1817
		1818	$cf::MAP{$path} || do {
		1819	my $guard = cf::lock_acquire "map_find:$path";
		1820	my $map = new_from_path cf::map $path
		1821	or return;
		1822
		1823	$map->{last_save} = $cf::RUNTIME;
		1824
		1825	$map->load_header
		1826	or return;
		1827
		1828	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1829	# doing this can freeze the server in a sync job, obviously
		1830	#$cf::WAIT_FOR_TICK->wait;
		1831	$map->reset;
		1832	undef $guard;
		1833	return find $path;
		1834	}
		1835
		1836	$cf::MAP{$path} = $map
		1837	}
		1838	}
		1839
		1840	sub pre_load { }
		1841	sub post_load { }
		1842
		1843	sub load {
		1844	my ($self) = @_;
		1845
		1846	local $self->{deny_reset} = 1; # loading can take a long time
		1847
		1848	my $path = $self->{path};
		1849
712	}	1850	{
		1851	my $guard = cf::lock_acquire "map_load:$path";
713		1852
714	if (my $cb = $pkg->can ("unload")) {	1853	return if $self->in_memory != cf::MAP_SWAPPED;
715	eval {	1854
716	$cb->($pkg);	1855	$self->in_memory (cf::MAP_LOADING);
		1856
		1857	$self->alloc;
		1858
		1859	$self->pre_load;
		1860	Coro::cede;
		1861
		1862	$self->_load_objects ($self->{load_path}, 1)
		1863	or return;
		1864
		1865	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1866	if delete $self->{load_original};
		1867
		1868	if (my $uniq = $self->uniq_path) {
		1869	utf8::encode $uniq;
		1870	if (aio_open $uniq, O_RDONLY, 0) {
		1871	$self->clear_unique_items;
		1872	$self->_load_objects ($uniq, 0);
717	1	1873	}
718	} or warn "$pkg unloaded, but with errors: $@";	1874	}
719	}
720		1875
721	Symbol::delete_package $pkg;	1876	Coro::cede;
722	}	1877	# now do the right thing for maps
		1878	$self->link_multipart_objects;
		1879	$self->difficulty ($self->estimate_difficulty)
		1880	unless $self->difficulty;
		1881	Coro::cede;
723		1882
724	sub load_extensions {	1883	unless ($self->{deny_activate}) {
725	my $LIBDIR = maps_directory "perl";	1884	$self->decay_objects;
		1885	$self->fix_auto_apply;
		1886	$self->update_buttons;
		1887	Coro::cede;
		1888	$self->set_darkness_map;
		1889	Coro::cede;
		1890	$self->activate;
		1891	}
726		1892
727	for my $ext (<$LIBDIR/*.ext>) {	1893	$self->{last_save} = $cf::RUNTIME;
728	next unless -r $ext;	1894	$self->last_access ($cf::RUNTIME);
729	eval {
730	load_extension $ext;
731	1
732	} or warn "$ext not loaded: $@";
733	}
734	}
735		1895
736	#############################################################################	1896	$self->in_memory (cf::MAP_IN_MEMORY);
737	# load/save/clean perl data associated with a map	1897	}
738		1898
739	*cf::mapsupport::on_clean = sub {	1899	$self->post_load;
		1900	}
		1901
		1902	sub customise_for {
		1903	my ($self, $ob) = @_;
		1904
		1905	return find "~" . $ob->name . "/" . $self->{path}
		1906	if $self->per_player;
		1907
		1908	# return find "?party/" . $ob->name . "/" . $self->{path}
		1909	# if $self->per_party;
		1910
		1911	$self
		1912	}
		1913
		1914	# find and load all maps in the 3x3 area around a map
		1915	sub load_neighbours {
740	my ($map) = @_;	1916	my ($map) = @_;
741		1917
742	my $path = $map->tmpname;	1918	my @neigh; # diagonal neighbours
743	defined $path or return;
744		1919
745	unlink "$path.pst";	1920	for (0 .. 3) {
746	};	1921	my $neigh = $map->tile_path ($_)
		1922	or next;
		1923	$neigh = find $neigh, $map
		1924	or next;
		1925	$neigh->load;
747		1926
748	attach_to_maps prio => -10000, package => cf::mapsupport::;	1927	push @neigh,
		1928	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		1929	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1930	}
749		1931
750	#############################################################################	1932	for (grep defined $_->[0], @neigh) {
751	# load/save perl data associated with player->ob objects	1933	my ($path, $origin) = @$_;
752		1934	my $neigh = find $path, $origin
753	sub all_objects(@) {	1935	or next;
754	@_, map all_objects ($_->inv), @_	1936	$neigh->load;
		1937	}
755	}	1938	}
756		1939
757	# TODO: compatibility cruft, remove when no longer needed	1940	sub find_sync {
758	attach_to_players	1941	my ($path, $origin) = @_;
759	on_load => sub {
760	my ($pl, $path) = @_;
761		1942
762	for my $o (all_objects $pl->ob) {	1943	cf::sync_job { find $path, $origin }
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1944	}
764	$o->set_ob_key_value ("_perl_data");
765		1945
766	%$o = %{ Storable::thaw pack "H*", $value };	1946	sub do_load_sync {
		1947	my ($map) = @_;
		1948
		1949	cf::sync_job { $map->load };
		1950	}
		1951
		1952	our %MAP_PREFETCH;
		1953	our $MAP_PREFETCHER = undef;
		1954
		1955	sub find_async {
		1956	my ($path, $origin) = @_;
		1957
		1958	$path = normalise $path, $origin && $origin->{path};
		1959
		1960	if (my $map = $cf::MAP{$path}) {
		1961	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1962	}
		1963
		1964	undef $MAP_PREFETCH{$path};
		1965	$MAP_PREFETCHER ||= cf::async {
		1966	while (%MAP_PREFETCH) {
		1967	for my $path (keys %MAP_PREFETCH) {
		1968	if (my $map = find $path) {
		1969	$map->load;
		1970	}
		1971
		1972	delete $MAP_PREFETCH{$path};
767	}	1973	}
768	}	1974	}
		1975	undef $MAP_PREFETCHER;
		1976	};
		1977	$MAP_PREFETCHER->prio (6);
		1978
		1979	()
		1980	}
		1981
		1982	sub save {
		1983	my ($self) = @_;
		1984
		1985	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1986
		1987	$self->{last_save} = $cf::RUNTIME;
		1988
		1989	return unless $self->dirty;
		1990
		1991	my $save = $self->save_path; utf8::encode $save;
		1992	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1993
		1994	$self->{load_path} = $save;
		1995
		1996	return if $self->{deny_save};
		1997
		1998	local $self->{last_access} = $self->last_access;#d#
		1999
		2000	cf::async {
		2001	$_->contr->save for $self->players;
		2002	};
		2003
		2004	if ($uniq) {
		2005	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2006	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2007	} else {
		2008	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
769	},	2009	}
770	;	2010	}
771		2011
772	#############################################################################	2012	sub swap_out {
		2013	my ($self) = @_;
773		2014
774	=head2 CORE EXTENSIONS	2015	# save first because save cedes
		2016	$self->save;
775		2017
776	Functions and methods that extend core crossfire objects.	2018	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2019
		2020	return if $self->players;
		2021	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2022	return if $self->{deny_save};
		2023
		2024	$self->clear;
		2025	$self->in_memory (cf::MAP_SWAPPED);
		2026	}
		2027
		2028	sub reset_at {
		2029	my ($self) = @_;
		2030
		2031	# TODO: safety, remove and allow resettable per-player maps
		2032	return 1e99 if $self->{deny_reset};
		2033
		2034	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2035	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2036
		2037	$time + $to
		2038	}
		2039
		2040	sub should_reset {
		2041	my ($self) = @_;
		2042
		2043	$self->reset_at <= $cf::RUNTIME
		2044	}
		2045
		2046	sub reset {
		2047	my ($self) = @_;
		2048
		2049	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2050
		2051	return if $self->players;
		2052
		2053	warn "resetting map ", $self->path;
		2054
		2055	$self->in_memory (cf::MAP_SWAPPED);
		2056
		2057	# need to save uniques path
		2058	unless ($self->{deny_save}) {
		2059	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2060
		2061	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2062	if $uniq;
		2063	}
		2064
		2065	delete $cf::MAP{$self->path};
		2066
		2067	$self->clear;
		2068
		2069	$_->clear_links_to ($self) for values %cf::MAP;
		2070
		2071	$self->unlink_save;
		2072	$self->destroy;
		2073	}
		2074
		2075	my $nuke_counter = "aaaa";
		2076
		2077	sub nuke {
		2078	my ($self) = @_;
		2079
		2080	delete $cf::MAP{$self->path};
		2081
		2082	$self->unlink_save;
		2083
		2084	bless $self, "cf::map";
		2085	delete $self->{deny_reset};
		2086	$self->{deny_save} = 1;
		2087	$self->reset_timeout (1);
		2088	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2089
		2090	$cf::MAP{$self->path} = $self;
		2091
		2092	$self->reset; # polite request, might not happen
		2093	}
		2094
		2095	=item $maps = cf::map::tmp_maps
		2096
		2097	Returns an arrayref with all map paths of currently instantiated and saved
		2098	maps. May block.
		2099
		2100	=cut
		2101
		2102	sub tmp_maps() {
		2103	[
		2104	map {
		2105	utf8::decode $_;
		2106	/\.map$/
		2107	? normalise $_
		2108	: ()
		2109	} @{ aio_readdir $TMPDIR or [] }
		2110	]
		2111	}
		2112
		2113	=item $maps = cf::map::random_maps
		2114
		2115	Returns an arrayref with all map paths of currently instantiated and saved
		2116	random maps. May block.
		2117
		2118	=cut
		2119
		2120	sub random_maps() {
		2121	[
		2122	map {
		2123	utf8::decode $_;
		2124	/\.map$/
		2125	? normalise "?random/$_"
		2126	: ()
		2127	} @{ aio_readdir $RANDOMDIR or [] }
		2128	]
		2129	}
		2130
		2131	=item cf::map::unique_maps
		2132
		2133	Returns an arrayref of paths of all shared maps that have
		2134	instantiated unique items. May block.
		2135
		2136	=cut
		2137
		2138	sub unique_maps() {
		2139	[
		2140	map {
		2141	utf8::decode $_;
		2142	/\.map$/
		2143	? normalise $_
		2144	: ()
		2145	} @{ aio_readdir $UNIQUEDIR or [] }
		2146	]
		2147	}
		2148
		2149	package cf;
		2150
		2151	=back
		2152
		2153	=head3 cf::object
		2154
		2155	=cut
		2156
		2157	package cf::object;
777		2158
778	=over 4	2159	=over 4
779		2160
780	=item cf::player::exists $login	2161	=item $ob->inv_recursive
781		2162
782	Returns true when the given account exists.	2163	Returns the inventory of the object _and_ their inventories, recursively.
783		2164
784	=cut	2165	=cut
785		2166
786	sub cf::player::exists($) {	2167	sub inv_recursive_;
787	cf::player::find $_[0]	2168	sub inv_recursive_ {
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2169	map { $_, inv_recursive_ $_->inv } @_
789	}	2170	}
		2171
		2172	sub inv_recursive {
		2173	inv_recursive_ inv $_[0]
		2174	}
		2175
		2176	package cf;
		2177
		2178	=back
		2179
		2180	=head3 cf::object::player
		2181
		2182	=over 4
790		2183
791	=item $player_object->reply ($npc, $msg[, $flags])	2184	=item $player_object->reply ($npc, $msg[, $flags])
792		2185
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2186	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	2187	can be C<undef>. Does the right thing when the player is currently in a
…		…
796		2189
797	=cut	2190	=cut
798		2191
799	# rough implementation of a future "reply" method that works	2192	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	2193	# with dialog boxes.
		2194	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	2195	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	2196	my ($self, $npc, $msg, $flags) = @_;
803		2197
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2198	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		2199
806	if ($self->{record_replies}) {	2200	if ($self->{record_replies}) {
807	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2201	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2202
808	} else {	2203	} else {
		2204	my $pl = $self->contr;
		2205
		2206	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2207	my $dialog = $pl->{npc_dialog};
		2208	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2209
		2210	} else {
809	$msg = $npc->name . " says: $msg" if $npc;	2211	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	2212	$self->message ($msg, $flags);
		2213	}
811	}	2214	}
812	}	2215	}
813		2216
814	=item $player->ext_reply ($msgid, $msgtype, %msg)	2217	=item $object->send_msg ($channel, $msg, $color, [extra...])
815		2218
816	Sends an ext reply to the player.
817
818	=cut	2219	=cut
819		2220
820	sub cf::player::ext_reply($$$%) {	2221	sub cf::object::send_msg {
821	my ($self, $id, %msg) = @_;	2222	my $pl = shift->contr
822		2223	or return;
823	$msg{msgid} = $id;	2224	$pl->send_msg (@_);
824
825	$self->send ("ext " . to_json \%msg);
826	}	2225	}
827		2226
828	=item $player_object->may ("access")	2227	=item $player_object->may ("access")
829		2228
830	Returns wether the given player is authorized to access resource "access"	2229	Returns wether the given player is authorized to access resource "access"
…		…
839	(ref $cf::CFG{"may_$access"}	2238	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2239	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	2240	: $cf::CFG{"may_$access"})
842	}	2241	}
843		2242
844	=cut	2243	=item $player_object->enter_link
845		2244
846	#############################################################################	2245	Freezes the player and moves him/her to a special map (C<{link}>).
		2246
		2247	The player should be reasonably safe there for short amounts of time. You
		2248	I<MUST> call C<leave_link> as soon as possible, though.
		2249
		2250	Will never block.
		2251
		2252	=item $player_object->leave_link ($map, $x, $y)
		2253
		2254	Moves the player out of the special C<{link}> map onto the specified
		2255	map. If the map is not valid (or omitted), the player will be moved back
		2256	to the location he/she was before the call to C<enter_link>, or, if that
		2257	fails, to the emergency map position.
		2258
		2259	Might block.
		2260
		2261	=cut
		2262
		2263	sub link_map {
		2264	unless ($LINK_MAP) {
		2265	$LINK_MAP = cf::map::find "{link}"
		2266	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2267	$LINK_MAP->load;
		2268	}
		2269
		2270	$LINK_MAP
		2271	}
		2272
		2273	sub cf::object::player::enter_link {
		2274	my ($self) = @_;
		2275
		2276	$self->deactivate_recursive;
		2277
		2278	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2279
		2280	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2281	if $self->map && $self->map->{path} ne "{link}";
		2282
		2283	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2284	}
		2285
		2286	sub cf::object::player::leave_link {
		2287	my ($self, $map, $x, $y) = @_;
		2288
		2289	return unless $self->contr->active;
		2290
		2291	my $link_pos = delete $self->{_link_pos};
		2292
		2293	unless ($map) {
		2294	# restore original map position
		2295	($map, $x, $y) = @{ $link_pos || [] };
		2296	$map = cf::map::find $map;
		2297
		2298	unless ($map) {
		2299	($map, $x, $y) = @$EMERGENCY_POSITION;
		2300	$map = cf::map::find $map
		2301	or die "FATAL: cannot load emergency map\n";
		2302	}
		2303	}
		2304
		2305	($x, $y) = (-1, -1)
		2306	unless (defined $x) && (defined $y);
		2307
		2308	# use -1 or undef as default coordinates, not 0, 0
		2309	($x, $y) = ($map->enter_x, $map->enter_y)
		2310	if $x <=0 && $y <= 0;
		2311
		2312	$map->load;
		2313	$map->load_neighbours;
		2314
		2315	return unless $self->contr->active;
		2316	$self->activate_recursive;
		2317
		2318	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2319	$self->enter_map ($map, $x, $y);
		2320	}
		2321
		2322	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2323
		2324	Moves the player to the given map-path and coordinates by first freezing
		2325	her, loading and preparing them map, calling the provided $check callback
		2326	that has to return the map if sucecssful, and then unfreezes the player on
		2327	the new (success) or old (failed) map position. In either case, $done will
		2328	be called at the end of this process.
		2329
		2330	=cut
		2331
		2332	our $GOTOGEN;
		2333
		2334	sub cf::object::player::goto {
		2335	my ($self, $path, $x, $y, $check, $done) = @_;
		2336
		2337	# do generation counting so two concurrent goto's will be executed in-order
		2338	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2339
		2340	$self->enter_link;
		2341
		2342	(async {
		2343	my $map = eval {
		2344	my $map = cf::map::find $path;
		2345
		2346	if ($map) {
		2347	$map = $map->customise_for ($self);
		2348	$map = $check->($map) if $check && $map;
		2349	} else {
		2350	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2351	}
		2352
		2353	$map
		2354	};
		2355
		2356	if ($@) {
		2357	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2358	LOG llevError | logBacktrace, Carp::longmess $@;
		2359	}
		2360
		2361	if ($gen == $self->{_goto_generation}) {
		2362	delete $self->{_goto_generation};
		2363	$self->leave_link ($map, $x, $y);
		2364	}
		2365
		2366	$done->() if $done;
		2367	})->prio (1);
		2368	}
		2369
		2370	=item $player_object->enter_exit ($exit_object)
		2371
		2372	=cut
		2373
		2374	sub parse_random_map_params {
		2375	my ($spec) = @_;
		2376
		2377	my $rmp = { # defaults
		2378	xsize => (cf::rndm 15, 40),
		2379	ysize => (cf::rndm 15, 40),
		2380	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2381	#layout => string,
		2382	};
		2383
		2384	for (split /\n/, $spec) {
		2385	my ($k, $v) = split /\s+/, $_, 2;
		2386
		2387	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2388	}
		2389
		2390	$rmp
		2391	}
		2392
		2393	sub prepare_random_map {
		2394	my ($exit) = @_;
		2395
		2396	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2397
		2398	# all this does is basically replace the /! path by
		2399	# a new random map path (?random/...) with a seed
		2400	# that depends on the exit object
		2401
		2402	my $rmp = parse_random_map_params $exit->msg;
		2403
		2404	if ($exit->map) {
		2405	$rmp->{region} = $exit->region->name;
		2406	$rmp->{origin_map} = $exit->map->path;
		2407	$rmp->{origin_x} = $exit->x;
		2408	$rmp->{origin_y} = $exit->y;
		2409	}
		2410
		2411	$rmp->{random_seed} ||= $exit->random_seed;
		2412
		2413	my $data = cf::to_json $rmp;
		2414	my $md5 = Digest::MD5::md5_hex $data;
		2415	my $meta = "$RANDOMDIR/$md5.meta";
		2416
		2417	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2418	aio_write $fh, 0, (length $data), $data, 0;
		2419	undef $fh;
		2420	aio_rename "$meta~", $meta;
		2421
		2422	$exit->slaying ("?random/$md5");
		2423	$exit->msg (undef);
		2424	}
		2425	}
		2426
		2427	sub cf::object::player::enter_exit {
		2428	my ($self, $exit) = @_;
		2429
		2430	return unless $self->type == cf::PLAYER;
		2431
		2432	if ($exit->slaying eq "/!") {
		2433	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2434	# the problem is that $exit might not survive long enough
		2435	# so it needs to be done right now, right here
		2436	cf::sync_job { prepare_random_map $exit };
		2437	}
		2438
		2439	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2440	my $hp = $exit->stats->hp;
		2441	my $sp = $exit->stats->sp;
		2442
		2443	$self->enter_link;
		2444
		2445	# if exit is damned, update players death & WoR home-position
		2446	$self->contr->savebed ($slaying, $hp, $sp)
		2447	if $exit->flag (FLAG_DAMNED);
		2448
		2449	(async {
		2450	$self->deactivate_recursive; # just to be sure
		2451	unless (eval {
		2452	$self->goto ($slaying, $hp, $sp);
		2453
		2454	1;
		2455	}) {
		2456	$self->message ("Something went wrong deep within the crossfire server. "
		2457	. "I'll try to bring you back to the map you were before. "
		2458	. "Please report this to the dungeon master!",
		2459	cf::NDI_UNIQUE | cf::NDI_RED);
		2460
		2461	warn "ERROR in enter_exit: $@";
		2462	$self->leave_link;
		2463	}
		2464	})->prio (1);
		2465	}
		2466
		2467	=head3 cf::client
		2468
		2469	=over 4
		2470
		2471	=item $client->send_drawinfo ($text, $flags)
		2472
		2473	Sends a drawinfo packet to the client. Circumvents output buffering so
		2474	should not be used under normal circumstances.
		2475
		2476	=cut
		2477
		2478	sub cf::client::send_drawinfo {
		2479	my ($self, $text, $flags) = @_;
		2480
		2481	utf8::encode $text;
		2482	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2483	}
		2484
		2485	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2486
		2487	Send a drawinfo or msg packet to the client, formatting the msg for the
		2488	client if neccessary. C<$type> should be a string identifying the type of
		2489	the message, with C<log> being the default. If C<$color> is negative, suppress
		2490	the message unless the client supports the msg packet.
		2491
		2492	=cut
		2493
		2494	sub cf::client::send_msg {
		2495	my ($self, $channel, $msg, $color, @extra) = @_;
		2496
		2497	$msg = $self->pl->expand_cfpod ($msg);
		2498
		2499	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2500
		2501	if (ref $channel) {
		2502	# send meta info to client, if not yet sent
		2503	unless (exists $self->{channel}{$channel->{id}}) {
		2504	$self->{channel}{$channel->{id}} = $channel;
		2505	$self->ext_msg (channel_info => $channel);
		2506	}
		2507
		2508	$channel = $channel->{id};
		2509	}
		2510
		2511	return unless @extra || length $msg;
		2512
		2513	if ($self->can_msg) {
		2514	# default colour, mask it out
		2515	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2516	if $color & cf::NDI_DEF;
		2517
		2518	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2519	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2520	} else {
		2521	if ($color >= 0) {
		2522	# replace some tags by gcfclient-compatible ones
		2523	for ($msg) {
		2524	1 while
		2525	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2526	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2527	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2528	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2529	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2530	}
		2531
		2532	$color &= cf::NDI_COLOR_MASK;
		2533
		2534	utf8::encode $msg;
		2535
		2536	if (0 && $msg =~ /\[/) {
		2537	# COMMAND/INFO
		2538	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2539	} else {
		2540	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2541	$self->send_packet ("drawinfo $color $msg")
		2542	}
		2543	}
		2544	}
		2545	}
		2546
		2547	=item $client->ext_msg ($type, @msg)
		2548
		2549	Sends an ext event to the client.
		2550
		2551	=cut
		2552
		2553	sub cf::client::ext_msg($$@) {
		2554	my ($self, $type, @msg) = @_;
		2555
		2556	my $extcmd = $self->extcmd;
		2557
		2558	if ($extcmd == 2) {
		2559	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2560	} elsif ($extcmd == 1) { # TODO: remove
		2561	push @msg, msgtype => "event_$type";
		2562	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2563	}
		2564	}
		2565
		2566	=item $client->ext_reply ($msgid, @msg)
		2567
		2568	Sends an ext reply to the client.
		2569
		2570	=cut
		2571
		2572	sub cf::client::ext_reply($$@) {
		2573	my ($self, $id, @msg) = @_;
		2574
		2575	if ($self->extcmd == 2) {
		2576	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2577	} elsif ($self->ns->extcmd == 1) {
		2578	#TODO: version 1, remove
		2579	unshift @msg, msgtype => "reply", msgid => $id;
		2580	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2581	}
		2582	}
		2583
		2584	=item $success = $client->query ($flags, "text", \&cb)
		2585
		2586	Queues a query to the client, calling the given callback with
		2587	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2588	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2589
		2590	Queries can fail, so check the return code. Or don't, as queries will
		2591	become reliable at some point in the future.
		2592
		2593	=cut
		2594
		2595	sub cf::client::query {
		2596	my ($self, $flags, $text, $cb) = @_;
		2597
		2598	return unless $self->state == ST_PLAYING
		2599	|| $self->state == ST_SETUP
		2600	|| $self->state == ST_CUSTOM;
		2601
		2602	$self->state (ST_CUSTOM);
		2603
		2604	utf8::encode $text;
		2605	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2606
		2607	$self->send_packet ($self->{query_queue}[0][0])
		2608	if @{ $self->{query_queue} } == 1;
		2609
		2610	1
		2611	}
		2612
		2613	cf::client->attach (
		2614	on_connect => sub {
		2615	my ($ns) = @_;
		2616
		2617	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2618	},
		2619	on_reply => sub {
		2620	my ($ns, $msg) = @_;
		2621
		2622	# this weird shuffling is so that direct followup queries
		2623	# get handled first
		2624	my $queue = delete $ns->{query_queue}
		2625	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2626
		2627	(shift @$queue)->[1]->($msg);
		2628	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2629
		2630	push @{ $ns->{query_queue} }, @$queue;
		2631
		2632	if (@{ $ns->{query_queue} } == @$queue) {
		2633	if (@$queue) {
		2634	$ns->send_packet ($ns->{query_queue}[0][0]);
		2635	} else {
		2636	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2637	}
		2638	}
		2639	},
		2640	on_exticmd => sub {
		2641	my ($ns, $buf) = @_;
		2642
		2643	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2644
		2645	if (ref $msg) {
		2646	my ($type, $reply, @payload) =
		2647	"ARRAY" eq ref $msg
		2648	? @$msg
		2649	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2650
		2651	if (my $cb = $EXTICMD{$type}) {
		2652	my @reply = $cb->($ns, @payload);
		2653
		2654	$ns->ext_reply ($reply, @reply)
		2655	if $reply;
		2656	}
		2657	} else {
		2658	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2659	}
		2660
		2661	cf::override;
		2662	},
		2663	);
		2664
		2665	=item $client->async (\&cb)
		2666
		2667	Create a new coroutine, running the specified callback. The coroutine will
		2668	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2669	or loss of connection).
		2670
		2671	=cut
		2672
		2673	sub cf::client::async {
		2674	my ($self, $cb) = @_;
		2675
		2676	my $coro = &Coro::async ($cb);
		2677
		2678	$coro->on_destroy (sub {
		2679	delete $self->{_coro}{$coro+0};
		2680	});
		2681
		2682	$self->{_coro}{$coro+0} = $coro;
		2683
		2684	$coro
		2685	}
		2686
		2687	cf::client->attach (
		2688	on_destroy => sub {
		2689	my ($ns) = @_;
		2690
		2691	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2692	},
		2693	);
		2694
		2695	=back
		2696
847		2697
848	=head2 SAFE SCRIPTING	2698	=head2 SAFE SCRIPTING
849		2699
850	Functions that provide a safe environment to compile and execute	2700	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	2701	snippets of perl code without them endangering the safety of the server
…		…
858	our $safe = new Safe "safe";	2708	our $safe = new Safe "safe";
859	our $safe_hole = new Safe::Hole;	2709	our $safe_hole = new Safe::Hole;
860		2710
861	$SIG{FPE} = 'IGNORE';	2711	$SIG{FPE} = 'IGNORE';
862		2712
863	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2713	$safe->permit_only (Opcode::opset qw(
		2714	:base_core :base_mem :base_orig :base_math
		2715	grepstart grepwhile mapstart mapwhile
		2716	sort time
		2717	));
864		2718
865	# here we export the classes and methods available to script code	2719	# here we export the classes and methods available to script code
866		2720
867	=pod	2721	=pod
868		2722
869	The following fucntions and emthods are available within a safe environment:	2723	The following functions and methods are available within a safe environment:
870		2724
871	cf::object contr pay_amount pay_player	2725	cf::object
		2726	contr pay_amount pay_player map x y force_find force_add
		2727	insert remove name archname title slaying race
		2728
872	cf::object::player player	2729	cf::object::player
873	cf::player peaceful	2730	player
		2731
		2732	cf::player
		2733	peaceful
		2734
		2735	cf::map
		2736	trigger
874		2737
875	=cut	2738	=cut
876		2739
877	for (	2740	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	2741	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2742	insert remove inv name archname title slaying race)],
879	["cf::object::player" => qw(player)],	2743	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	2744	["cf::player" => qw(peaceful)],
		2745	["cf::map" => qw(trigger)],
881	) {	2746	) {
882	no strict 'refs';	2747	no strict 'refs';
883	my ($pkg, @funs) = @$_;	2748	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2749	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	2750	for @funs;
…		…
953	=back	2818	=back
954		2819
955	=cut	2820	=cut
956		2821
957	#############################################################################	2822	#############################################################################
		2823	# the server's init and main functions
958		2824
959	=head2 EXTENSION DATABASE SUPPORT	2825	sub load_facedata($) {
		2826	my ($path) = @_;
960		2827
961	Crossfire maintains a very simple database for extension use. It can	2828	my $enc = JSON::XS->new->utf8->canonical;
962	currently store anything that can be serialised using Storable, which
963	excludes objects.
964		2829
965	The parameter C<$family> should best start with the name of the extension	2830	warn "loading facedata from $path\n";
966	using it, it should be unique.
967		2831
968	=over 4	2832	my $facedata;
		2833	0 < aio_load $path, $facedata
		2834	or die "$path: $!";
969		2835
970	=item $hashref = cf::db_get $family	2836	$facedata = Coro::Storable::thaw $facedata;
971		2837
972	Return a hashref for use by the extension C<$family>, which can be	2838	$facedata->{version} == 2
973	modified. After modifications, you have to call C<cf::db_dirty> or	2839	or cf::cleanup "$path: version mismatch, cannot proceed.";
974	C<cf::db_sync>.
975		2840
976	=item $value = cf::db_get $family => $key	2841	# patch in the exptable
977		2842	$facedata->{resource}{"res/exp_table"} = {
978	Returns a single value from the database	2843	type => FT_RSRC,
979		2844	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
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	}
1009
1010	my $pid;
1011
1012	sub db_save() {
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	});	2845	};
		2846	cf::cede_to_tick;
1033		2847
1034	sub db_dirty() {
1035	$dirty = 1;
1036	$idle->start;
1037	}	2848	{
		2849	my $faces = $facedata->{faceinfo};
1038		2850
1039	sub db_get($;$) {	2851	while (my ($face, $info) = each %$faces) {
1040	@_ >= 2	2852	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1041	? $DB->{$_[0]}{$_[1]}	2853	cf::face::set_visibility $idx, $info->{visibility};
1042	: ($DB->{$_[0]} ||= { })	2854	cf::face::set_magicmap $idx, $info->{magicmap};
1043	}	2855	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		2856	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1044		2857
1045	sub db_put($$;$) {	2858	cf::cede_to_tick;
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	},	2859	}
		2860
		2861	while (my ($face, $info) = each %$faces) {
		2862	next unless $info->{smooth};
		2863	my $idx = cf::face::find $face
		2864	or next;
		2865	if (my $smooth = cf::face::find $info->{smooth}) {
		2866	cf::face::set_smooth $idx, $smooth;
		2867	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2868	} else {
		2869	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2870	}
		2871
		2872	cf::cede_to_tick;
		2873	}
1059	;	2874	}
1060	}
1061		2875
1062	#############################################################################	2876	{
1063	# the server's main()	2877	my $anims = $facedata->{animinfo};
		2878
		2879	while (my ($anim, $info) = each %$anims) {
		2880	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2881	cf::cede_to_tick;
		2882	}
		2883
		2884	cf::anim::invalidate_all; # d'oh
		2885	}
		2886
		2887	{
		2888	# TODO: for gcfclient pleasure, we should give resources
		2889	# that gcfclient doesn't grok a >10000 face index.
		2890	my $res = $facedata->{resource};
		2891
		2892	my $soundconf = delete $res->{"res/sound.conf"};
		2893
		2894	while (my ($name, $info) = each %$res) {
		2895	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2896	my $data;
		2897
		2898	if ($info->{type} & 1) {
		2899	# prepend meta info
		2900
		2901	my $meta = $enc->encode ({
		2902	name => $name,
		2903	%{ $info->{meta} || {} },
		2904	});
		2905
		2906	$data = pack "(w/a*)*", $meta, $info->{data};
		2907	} else {
		2908	$data = $info->{data};
		2909	}
		2910
		2911	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		2912	cf::face::set_type $idx, $info->{type};
		2913
		2914	cf::cede_to_tick;
		2915	}
		2916
		2917	if ($soundconf) {
		2918	$soundconf = $enc->decode (delete $soundconf->{data});
		2919
		2920	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		2921	my $sound = $soundconf->{compat}[$_]
		2922	or next;
		2923
		2924	my $face = cf::face::find "sound/$sound->[1]";
		2925	cf::sound::set $sound->[0] => $face;
		2926	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		2927	}
		2928
		2929	while (my ($k, $v) = each %{$soundconf->{event}}) {
		2930	my $face = cf::face::find "sound/$v";
		2931	cf::sound::set $k => $face;
		2932	}
		2933	}
		2934	}
		2935
		2936	1
		2937	}
		2938
		2939	register_exticmd fx_want => sub {
		2940	my ($ns, $want) = @_;
		2941
		2942	while (my ($k, $v) = each %$want) {
		2943	$ns->fx_want ($k, $v);
		2944	}
		2945	};
		2946
		2947	sub reload_regions {
		2948	load_resource_file "$MAPDIR/regions"
		2949	or die "unable to load regions file\n";
		2950
		2951	for (cf::region::list) {
		2952	$_->{match} = qr/$_->{match}/
		2953	if exists $_->{match};
		2954	}
		2955	}
		2956
		2957	sub reload_facedata {
		2958	load_facedata "$DATADIR/facedata"
		2959	or die "unable to load facedata\n";
		2960	}
		2961
		2962	sub reload_archetypes {
		2963	load_resource_file "$DATADIR/archetypes"
		2964	or die "unable to load archetypes\n";
		2965	#d# NEED to laod twice to resolve forward references
		2966	# this really needs to be done in an extra post-pass
		2967	# (which needs to be synchronous, so solve it differently)
		2968	load_resource_file "$DATADIR/archetypes"
		2969	or die "unable to load archetypes\n";
		2970	}
		2971
		2972	sub reload_treasures {
		2973	load_resource_file "$DATADIR/treasures"
		2974	or die "unable to load treasurelists\n";
		2975	}
		2976
		2977	sub reload_resources {
		2978	warn "reloading resource files...\n";
		2979
		2980	reload_regions;
		2981	reload_facedata;
		2982	#reload_archetypes;#d#
		2983	reload_archetypes;
		2984	reload_treasures;
		2985
		2986	warn "finished reloading resource files\n";
		2987	}
		2988
		2989	sub init {
		2990	reload_resources;
		2991	}
1064		2992
1065	sub cfg_load {	2993	sub cfg_load {
1066	open my $fh, "<:utf8", cf::confdir . "/config"	2994	open my $fh, "<:utf8", "$CONFDIR/config"
1067	or return;	2995	or return;
1068		2996
1069	local $/;	2997	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;	2998	*CFG = YAML::Syck::Load <$fh>;
		2999
		3000	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3001
		3002	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3003	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3004
		3005	if (exists $CFG{mlockall}) {
		3006	eval {
		3007	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3008	and die "WARNING: m(un)lockall failed: $!\n";
		3009	};
		3010	warn $@ if $@;
		3011	}
1071	}	3012	}
1072		3013
1073	sub main {	3014	sub main {
		3015	# we must not ever block the main coroutine
		3016	local $Coro::idle = sub {
		3017	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3018	(async {
		3019	Event::one_event;
		3020	})->prio (Coro::PRIO_MAX);
		3021	};
		3022
1074	cfg_load;	3023	cfg_load;
1075	db_load;	3024	db_init;
1076	load_extensions;	3025	load_extensions;
		3026
		3027	$TICK_WATCHER->start;
1077	Event::loop;	3028	Event::loop;
1078	}	3029	}
1079		3030
1080	#############################################################################	3031	#############################################################################
1081	# initialisation	3032	# initialisation and cleanup
1082		3033
1083	sub _perl_reload(&) {	3034	# install some emergency cleanup handlers
		3035	BEGIN {
		3036	for my $signal (qw(INT HUP TERM)) {
		3037	Event->signal (
		3038	reentrant => 0,
		3039	data => WF_AUTOCANCEL,
		3040	signal => $signal,
		3041	prio => 0,
		3042	cb => sub {
		3043	cf::cleanup "SIG$signal";
		3044	},
		3045	);
		3046	}
		3047	}
		3048
		3049	sub write_runtime {
		3050	my $runtime = "$LOCALDIR/runtime";
		3051
		3052	# first touch the runtime file to show we are still running:
		3053	# the fsync below can take a very very long time.
		3054
		3055	IO::AIO::aio_utime $runtime, undef, undef;
		3056
		3057	my $guard = cf::lock_acquire "write_runtime";
		3058
		3059	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3060	or return;
		3061
		3062	my $value = $cf::RUNTIME + 90 + 10;
		3063	# 10 is the runtime save interval, for a monotonic clock
		3064	# 60 allows for the watchdog to kill the server.
		3065
		3066	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3067	and return;
		3068
		3069	# always fsync - this file is important
		3070	aio_fsync $fh
		3071	and return;
		3072
		3073	# touch it again to show we are up-to-date
		3074	aio_utime $fh, undef, undef;
		3075
		3076	close $fh
		3077	or return;
		3078
		3079	aio_rename "$runtime~", $runtime
		3080	and return;
		3081
		3082	warn "runtime file written.\n";
		3083
		3084	1
		3085	}
		3086
		3087	sub emergency_save() {
		3088	my $freeze_guard = cf::freeze_mainloop;
		3089
		3090	warn "enter emergency perl save\n";
		3091
		3092	cf::sync_job {
		3093	# use a peculiar iteration method to avoid tripping on perl
		3094	# refcount bugs in for. also avoids problems with players
		3095	# and maps saved/destroyed asynchronously.
		3096	warn "begin emergency player save\n";
		3097	for my $login (keys %cf::PLAYER) {
		3098	my $pl = $cf::PLAYER{$login} or next;
		3099	$pl->valid or next;
		3100	$pl->save;
		3101	}
		3102	warn "end emergency player save\n";
		3103
		3104	warn "begin emergency map save\n";
		3105	for my $path (keys %cf::MAP) {
		3106	my $map = $cf::MAP{$path} or next;
		3107	$map->valid or next;
		3108	$map->save;
		3109	}
		3110	warn "end emergency map save\n";
		3111
		3112	warn "begin emergency database checkpoint\n";
		3113	BDB::db_env_txn_checkpoint $DB_ENV;
		3114	warn "end emergency database checkpoint\n";
		3115	};
		3116
		3117	warn "leave emergency perl save\n";
		3118	}
		3119
		3120	sub post_cleanup {
1084	my ($msg) = @_;	3121	my ($make_core) = @_;
1085		3122
1086	$msg->("reloading...");	3123	warn Carp::longmess "post_cleanup backtrace"
		3124	if $make_core;
		3125	}
1087		3126
1088	eval {	3127	sub do_reload_perl() {
1089	# cancel all watchers	3128	# can/must only be called in main
		3129	if ($Coro::current != $Coro::main) {
		3130	warn "can only reload from main coroutine";
		3131	return;
		3132	}
		3133
		3134	warn "reloading...";
		3135
		3136	warn "entering sync_job";
		3137
		3138	cf::sync_job {
		3139	cf::write_runtime; # external watchdog should not bark
		3140	cf::emergency_save;
		3141	cf::write_runtime; # external watchdog should not bark
		3142
		3143	warn "syncing database to disk";
		3144	BDB::db_env_txn_checkpoint $DB_ENV;
		3145
		3146	# if anything goes wrong in here, we should simply crash as we already saved
		3147
		3148	warn "cancelling all WF_AUTOCANCEL watchers";
1090	for (Event::all_watchers) {	3149	for (Event::all_watchers) {
1091	$_->cancel if $_->data & WF_AUTOCANCEL;	3150	$_->cancel if $_->data & WF_AUTOCANCEL;
1092	}	3151	}
1093		3152
1094	# unload all extensions	3153	warn "flushing outstanding aio requests";
1095	for (@exts) {	3154	for (;;) {
1096	$msg->("unloading <$_>");	3155	BDB::flush;
1097	unload_extension $_;	3156	IO::AIO::flush;
		3157	Coro::cede;
		3158	last unless IO::AIO::nreqs || BDB::nreqs;
		3159	warn "iterate...";
		3160	}
		3161
		3162	++$RELOAD;
		3163
		3164	warn "cancelling all extension coros";
		3165	$_->cancel for values %EXT_CORO;
		3166	%EXT_CORO = ();
		3167
		3168	warn "removing commands";
		3169	%COMMAND = ();
		3170
		3171	warn "removing ext/exti commands";
		3172	%EXTCMD = ();
		3173	%EXTICMD = ();
		3174
		3175	warn "unloading/nuking all extensions";
		3176	for my $pkg (@EXTS) {
		3177	warn "... unloading $pkg";
		3178
		3179	if (my $cb = $pkg->can ("unload")) {
		3180	eval {
		3181	$cb->($pkg);
		3182	1
		3183	} or warn "$pkg unloaded, but with errors: $@";
1098	}	3184	}
1099		3185
		3186	warn "... nuking $pkg";
		3187	Symbol::delete_package $pkg;
		3188	}
		3189
1100	# unload all modules loaded from $LIBDIR	3190	warn "unloading all perl modules loaded from $LIBDIR";
1101	while (my ($k, $v) = each %INC) {	3191	while (my ($k, $v) = each %INC) {
1102	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3192	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1103		3193
1104	$msg->("removing <$k>");	3194	warn "... unloading $k";
1105	delete $INC{$k};	3195	delete $INC{$k};
1106		3196
1107	$k =~ s/\.pm$//;	3197	$k =~ s/\.pm$//;
1108	$k =~ s/\//::/g;	3198	$k =~ s/\//::/g;
1109		3199
…		…
1112	}	3202	}
1113		3203
1114	Symbol::delete_package $k;	3204	Symbol::delete_package $k;
1115	}	3205	}
1116		3206
1117	# sync database to disk
1118	cf::db_sync;
1119
1120	# get rid of safe::, as good as possible	3207	warn "getting rid of safe::, as good as possible";
1121	Symbol::delete_package "safe::$_"	3208	Symbol::delete_package "safe::$_"
1122	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3209	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1123		3210
1124	# remove register_script_function callbacks
1125	# TODO
1126
1127	# unload cf.pm "a bit"	3211	warn "unloading cf.pm \"a bit\"";
1128	delete $INC{"cf.pm"};	3212	delete $INC{"cf.pm"};
		3213	delete $INC{"cf/pod.pm"};
1129		3214
1130	# don't, removes xs symbols, too,	3215	# don't, removes xs symbols, too,
1131	# and global variables created in xs	3216	# and global variables created in xs
1132	#Symbol::delete_package __PACKAGE__;	3217	#Symbol::delete_package __PACKAGE__;
1133		3218
1134	# reload cf.pm	3219	warn "unload completed, starting to reload now";
		3220
1135	$msg->("reloading cf.pm");	3221	warn "reloading cf.pm";
1136	require cf;	3222	require cf;
		3223	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1137		3224
1138	# load config and database again	3225	warn "loading config and database again";
1139	cf::cfg_load;	3226	cf::cfg_load;
1140	cf::db_load;
1141		3227
1142	# load extensions	3228	warn "loading extensions";
1143	$msg->("load extensions");
1144	cf::load_extensions;	3229	cf::load_extensions;
1145		3230
1146	# reattach attachments to objects	3231	warn "reattaching attachments to objects/players";
1147	$msg->("reattach");	3232	_global_reattach; # objects, sockets
1148	_global_reattach;	3233	warn "reattaching attachments to maps";
		3234	reattach $_ for values %MAP;
		3235	warn "reattaching attachments to players";
		3236	reattach $_ for values %PLAYER;
		3237
		3238	warn "leaving sync_job";
		3239
		3240	1
		3241	} or do {
		3242	warn $@;
		3243	warn "error while reloading, exiting.";
		3244	exit 1;
1149	};	3245	};
1150	$msg->($@) if $@;
1151		3246
1152	$msg->("reloaded");	3247	warn "reloaded";
1153	};	3248	};
1154		3249
1155	sub perl_reload() {	3250	our $RELOAD_WATCHER; # used only during reload
1156	_perl_reload {	3251
1157	warn $_[0];	3252	sub reload_perl() {
1158	print "$_[0]\n";	3253	# doing reload synchronously and two reloads happen back-to-back,
		3254	# coro crashes during coro_state_free->destroy here.
		3255
		3256	$RELOAD_WATCHER ||= Event->timer (
		3257	reentrant => 0,
		3258	after => 0,
		3259	data => WF_AUTOCANCEL,
		3260	cb => sub {
		3261	do_reload_perl;
		3262	undef $RELOAD_WATCHER;
		3263	},
1159	};	3264	);
1160	}	3265	}
1161		3266
1162	register "<global>", __PACKAGE__;
1163
1164	register_command "perl-reload" => sub {	3267	register_command "reload" => sub {
1165	my ($who, $arg) = @_;	3268	my ($who, $arg) = @_;
1166		3269
1167	if ($who->flag (FLAG_WIZ)) {	3270	if ($who->flag (FLAG_WIZ)) {
1168	_perl_reload {	3271	$who->message ("reloading server.");
1169	warn $_[0];	3272	async { reload_perl };
1170	$who->message ($_[0]);	3273	}
		3274	};
		3275
		3276	unshift @INC, $LIBDIR;
		3277
		3278	my $bug_warning = 0;
		3279
		3280	our @WAIT_FOR_TICK;
		3281	our @WAIT_FOR_TICK_BEGIN;
		3282
		3283	sub wait_for_tick {
		3284	return unless $TICK_WATCHER->is_active;
		3285	return if $Coro::current == $Coro::main;
		3286
		3287	my $signal = new Coro::Signal;
		3288	push @WAIT_FOR_TICK, $signal;
		3289	$signal->wait;
		3290	}
		3291
		3292	sub wait_for_tick_begin {
		3293	return unless $TICK_WATCHER->is_active;
		3294	return if $Coro::current == $Coro::main;
		3295
		3296	my $signal = new Coro::Signal;
		3297	push @WAIT_FOR_TICK_BEGIN, $signal;
		3298	$signal->wait;
		3299	}
		3300
		3301	my $min = 1e6;#d#
		3302	my $avg = 10;
		3303	$TICK_WATCHER = Event->timer (
		3304	reentrant => 0,
		3305	parked => 1,
		3306	prio => 0,
		3307	at => $NEXT_TICK || $TICK,
		3308	data => WF_AUTOCANCEL,
		3309	cb => sub {
		3310	if ($Coro::current != $Coro::main) {
		3311	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3312	unless ++$bug_warning > 10;
		3313	return;
		3314	}
		3315
		3316	$NOW = $tick_start = Event::time;
		3317
		3318	cf::server_tick; # one server iteration
		3319
		3320	0 && sync_job {#d#
		3321	for(1..10) {
		3322	my $t = Event::time;
		3323	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3324	or die;
		3325
		3326	$map->width (50);
		3327	$map->height (50);
		3328	$map->alloc;
		3329	$map->_load_objects ("/tmp/x.map", 1);
		3330	my $t = Event::time - $t;
		3331
		3332	#next unless $t < 0.0013;#d#
		3333	if ($t < $min) {
		3334	$min = $t;
		3335	}
		3336	$avg = $avg * 0.99 + $t * 0.01;
		3337	}
		3338	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3339	exit 0;
		3340	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1171	};	3341	};
1172	}
1173	};
1174		3342
1175	unshift @INC, $LIBDIR;	3343	$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;	3344	$NEXT_TICK += $TICK;
		3345
		3346	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3347	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3348	Coro::async_pool {
		3349	write_runtime
		3350	or warn "ERROR: unable to write runtime file: $!";
		3351	};
		3352	}
		3353
		3354	# my $AFTER = Event::time;
		3355	# warn $AFTER - $NOW;#d#
		3356
		3357	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3358	$sig->send;
		3359	}
		3360	while (my $sig = shift @WAIT_FOR_TICK) {
		3361	$sig->send;
		3362	}
		3363
		3364	$NOW = Event::time;
1187		3365
1188	# if we are delayed by four ticks or more, skip them all	3366	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3367	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1190		3368
1191	$TICK_WATCHER->at ($NEXT_TICK);	3369	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	3370	$TICK_WATCHER->start;
		3371
		3372	$LOAD = ($NOW - $tick_start) / $TICK;
		3373	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3374
		3375	_post_tick;
		3376
		3377
1193	},	3378	},
1194	);	3379	);
1195		3380
		3381	{
		3382	BDB::max_poll_time $TICK * 0.1;
		3383	$BDB_POLL_WATCHER = Event->io (
		3384	reentrant => 0,
		3385	fd => BDB::poll_fileno,
		3386	poll => 'r',
		3387	prio => 0,
		3388	data => WF_AUTOCANCEL,
		3389	cb => \&BDB::poll_cb,
		3390	);
		3391	BDB::min_parallel 8;
		3392
		3393	BDB::set_sync_prepare {
		3394	my $status;
		3395	my $current = $Coro::current;
		3396	(
		3397	sub {
		3398	$status = $!;
		3399	$current->ready; undef $current;
		3400	},
		3401	sub {
		3402	Coro::schedule while defined $current;
		3403	$! = $status;
		3404	},
		3405	)
		3406	};
		3407
		3408	unless ($DB_ENV) {
		3409	$DB_ENV = BDB::db_env_create;
		3410
		3411	cf::sync_job {
		3412	eval {
		3413	BDB::db_env_open
		3414	$DB_ENV,
		3415	$BDBDIR,
		3416	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3417	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3418	0666;
		3419
		3420	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3421
		3422	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3423	$DB_ENV->set_lk_detect;
		3424	};
		3425
		3426	cf::cleanup "db_env_open(db): $@" if $@;
		3427	};
		3428	}
		3429	}
		3430
		3431	{
		3432	IO::AIO::min_parallel 8;
		3433
		3434	undef $Coro::AIO::WATCHER;
1196	IO::AIO::max_poll_time $TICK * 0.2;	3435	IO::AIO::max_poll_time $TICK * 0.1;
1197		3436	$AIO_POLL_WATCHER = Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	3437	reentrant => 0,
1199	poll => 'r',
1200	prio => 5,
1201	data => WF_AUTOCANCEL,	3438	data => WF_AUTOCANCEL,
		3439	fd => IO::AIO::poll_fileno,
		3440	poll => 'r',
		3441	prio => 6,
1202	cb => \&IO::AIO::poll_cb);	3442	cb => \&IO::AIO::poll_cb,
		3443	);
		3444	}
		3445
		3446	my $_log_backtrace;
		3447
		3448	sub _log_backtrace {
		3449	my ($msg, @addr) = @_;
		3450
		3451	$msg =~ s/\n//;
		3452
		3453	# limit the # of concurrent backtraces
		3454	if ($_log_backtrace < 2) {
		3455	++$_log_backtrace;
		3456	async {
		3457	my @bt = fork_call {
		3458	@addr = map { sprintf "%x", $_ } @addr;
		3459	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3460	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3461	or die "addr2line: $!";
		3462
		3463	my @funcs;
		3464	my @res = <$fh>;
		3465	chomp for @res;
		3466	while (@res) {
		3467	my ($func, $line) = splice @res, 0, 2, ();
		3468	push @funcs, "[$func] $line";
		3469	}
		3470
		3471	@funcs
		3472	};
		3473
		3474	LOG llevInfo, "[ABT] $msg\n";
		3475	LOG llevInfo, "[ABT] $_\n" for @bt;
		3476	--$_log_backtrace;
		3477	};
		3478	} else {
		3479	LOG llevInfo, "[ABT] $msg\n";
		3480	LOG llevInfo, "[ABT] [suppressed]\n";
		3481	}
		3482	}
		3483
		3484	# load additional modules
		3485	use cf::pod;
		3486
		3487	END { cf::emergency_save }
1203		3488
1204	1	3489	1
1205		3490

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