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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.47 by root, Sun Aug 27 13:02:04 2006 UTC vs.
Revision 1.317 by root, Mon Jul 23 23:38:17 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
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
		30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
10	use Time::HiRes;	32	use Time::HiRes;
11	use Event;	33	use Compress::LZF;
		34	use Digest::MD5 ();
		35
		36	# configure various modules to our taste
		37	#
		38	$Storable::canonical = 1; # reduce rsync transfers
		39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		40	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		41
12	$Event::Eval = 1; # no idea why this is required, but it is	42	$Event::Eval = 1; # no idea why this is required, but it is
13		43
14	use strict;	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		45	$YAML::Syck::ImplicitUnicode = 1;
15		46
16	_reload_1;	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		48
		49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		50
18	our %COMMAND = ();	51	our %COMMAND = ();
		52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
		55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
		59
		60	our $RELOAD; # number of reloads so far
19	our @EVENT;	61	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		62
24	our $TICK = MAX_TIME * 1e-6;	63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
		74
		75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
25	our $TICK_WATCHER;	76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	79	our $NEXT_TICK;
		80	our $NOW;
		81	our $USE_FSYNC = 1; # use fsync to write maps - default off
		82
		83	our $BDB_POLL_WATCHER;
		84	our $DB_ENV;
		85
		86	our %CFG;
		87
		88	our $UPTIME; $UPTIME ||= time;
		89	our $RUNTIME;
		90
		91	our %PLAYER; # all users
		92	our %MAP; # all maps
		93	our $LINK_MAP; # the special {link} map, which is always available
		94
		95	# used to convert map paths into valid unix filenames by replacing / by ∕
		96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
		101
		102	binmode STDOUT;
		103	binmode STDERR;
		104
		105	# read virtual server time, if available
		106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		107	open my $fh, "<", "$LOCALDIR/runtime"
		108	or die "unable to read runtime file: $!";
		109	$RUNTIME = <$fh> + 0.;
		110	}
		111
		112	mkdir $_
		113	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		114
		115	our $EMERGENCY_POSITION;
		116
		117	sub cf::map::normalise;
		118
		119	#############################################################################
		120
		121	=head2 GLOBAL VARIABLES
		122
		123	=over 4
		124
		125	=item $cf::UPTIME
		126
		127	The timestamp of the server start (so not actually an uptime).
		128
		129	=item $cf::RUNTIME
		130
		131	The time this server has run, starts at 0 and is increased by $cf::TICK on
		132	every server tick.
		133
		134	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		135	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		136	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		137
		138	Various directories - "/etc", read-only install directory, perl-library
		139	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		140	unique-items directory, player file directory, random maps directory and
		141	database environment.
		142
		143	=item $cf::NOW
		144
		145	The time of the last (current) server tick.
		146
		147	=item $cf::TICK
		148
		149	The interval between server ticks, in seconds.
		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
		160
		161	=item %cf::CFG
		162
		163	Configuration for the server, loaded from C</etc/crossfire/config>, or
		164	from wherever your confdir points to.
		165
		166	=item cf::wait_for_tick, cf::wait_for_tick_begin
		167
		168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		169	returns directly I<after> the tick processing (and consequently, can only wake one process
		170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
		177
		178	=back
		179
		180	=cut
27		181
28	BEGIN {	182	BEGIN {
29	*CORE::GLOBAL::warn = sub {	183	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	184	my $msg = join "", @_;
		185
31	$msg .= "\n"	186	$msg .= "\n"
32	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
33		188
34	print STDERR "cfperl: $msg";	189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		190
		191	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	192	LOG llevError, $msg;
36	};	193	};
37	}	194	}
38		195
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		203
75	# we bless all objects into (empty) derived classes to force a method lookup	204	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	205	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	206	for my $pkg (qw(
		207	cf::global cf::attachable
		208	cf::object cf::object::player
		209	cf::client cf::player
		210	cf::arch cf::living
		211	cf::map cf::party cf::region
		212	)) {
78	no strict 'refs';	213	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	214	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	215	}
81		216
82	$Event::DIED = sub {	217	$Event::DIED = sub {
83	warn "error in event callback: @_";	218	warn "error in event callback: @_";
84	};	219	};
85		220
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	221	#############################################################################
93	# utility functions
94		222
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	223	=head2 UTILITY FUNCTIONS
96		224
97	sub from_json($) {	225	=over 4
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101		226
102	sub to_json($) {	227	=item dumpval $ref
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	228
104	JSON::Syck::Dump $_[0]	229	=cut
		230
		231	sub dumpval {
		232	eval {
		233	local $SIG{__DIE__};
		234	my $d;
		235	if (1) {
		236	$d = new Data::Dumper([$_[0]], ["*var"]);
		237	$d->Terse(1);
		238	$d->Indent(2);
		239	$d->Quotekeys(0);
		240	$d->Useqq(1);
		241	#$d->Bless(...);
		242	$d->Seen($_[1]) if @_ > 1;
		243	$d = $d->Dump();
		244	}
		245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		246	$d
		247	} || "[unable to dump $_[0]: '$@']";
105	}	248	}
		249
		250	=item $ref = cf::from_json $json
		251
		252	Converts a JSON string into the corresponding perl data structure.
		253
		254	=item $json = cf::to_json $ref
		255
		256	Converts a perl data structure into its JSON representation.
		257
		258	=cut
		259
		260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		261
		262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
		264
		265	=item cf::lock_wait $string
		266
		267	Wait until the given lock is available. See cf::lock_acquire.
		268
		269	=item my $lock = cf::lock_acquire $string
		270
		271	Wait until the given lock is available and then acquires it and returns
		272	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		273	for example when the coroutine gets canceled), the lock is automatically
		274	returned.
		275
		276	Lock names should begin with a unique identifier (for example, cf::map::find
		277	uses map_find and cf::map::load uses map_load).
		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
		283	=cut
		284
		285	our %LOCK;
		286
		287	sub lock_wait($) {
		288	my ($key) = @_;
		289
		290	# wait for lock, if any
		291	while ($LOCK{$key}) {
		292	push @{ $LOCK{$key} }, $Coro::current;
		293	Coro::schedule;
		294	}
		295	}
		296
		297	sub lock_acquire($) {
		298	my ($key) = @_;
		299
		300	# wait, to be sure we are not locked
		301	lock_wait $key;
		302
		303	$LOCK{$key} = [];
		304
		305	Coro::guard {
		306	# wake up all waiters, to be on the safe side
		307	$_->ready for @{ delete $LOCK{$key} };
		308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
		315	}
		316
		317	sub freeze_mainloop {
		318	return unless $TICK_WATCHER->is_active;
		319
		320	my $guard = Coro::guard {
		321	$TICK_WATCHER->start;
		322	};
		323	$TICK_WATCHER->stop;
		324	$guard
		325	}
		326
		327	=item cf::get_slot $time[, $priority[, $name]]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	The optional C<$name> can be used to identify the job to run. It might be
		334	used for statistical purposes and should identify the same time-class.
		335
		336	Useful for short background jobs.
		337
		338	=cut
		339
		340	our @SLOT_QUEUE;
		341	our $SLOT_QUEUE;
		342
		343	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		344	$SLOT_QUEUE = Coro::async {
		345	my $signal = new Coro::Signal;
		346
		347	while () {
		348	next_job:
		349	my $avail = cf::till_tick;
		350	if ($avail > 0.01) {
		351	for (0 .. $#SLOT_QUEUE) {
		352	if ($SLOT_QUEUE[$_][0] < $avail) {
		353	my $job = splice @SLOT_QUEUE, $_, 1, ();
		354	$job->[2]->send;
		355	Coro::cede;
		356	goto next_job;
		357	}
		358	}
		359	}
		360
		361	if (@SLOT_QUEUE) {
		362	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		363	push @cf::WAIT_FOR_TICK, $signal;
		364	$signal->wait;
		365	} else {
		366	Coro::schedule;
		367	}
		368	}
		369	};
		370
		371	sub get_slot($;$$) {
		372	my ($time, $pri, $name) = @_;
		373
		374	$time = $TICK * .6 if $time > $TICK * .6;
		375	my $sig = new Coro::Signal;
		376
		377	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		378	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		379	$SLOT_QUEUE->ready;
		380	$sig->wait;
		381	}
		382
		383	=item cf::async { BLOCK }
		384
		385	Currently the same as Coro::async_pool, meaning you cannot use
		386	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		387	thing you are allowed to do is call C<prio> on it.
		388
		389	=cut
		390
		391	BEGIN { *async = \&Coro::async_pool }
		392
		393	=item cf::sync_job { BLOCK }
		394
		395	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		396	is always able to handle events or runnable, as Crossfire TRT is only
		397	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		398	acceptable.
		399
		400	If it must be done, put the blocking parts into C<sync_job>. This will run
		401	the given BLOCK in another coroutine while waiting for the result. The
		402	server will be frozen during this time, so the block should either finish
		403	fast or be very important.
		404
		405	=cut
		406
		407	sub sync_job(&) {
		408	my ($job) = @_;
		409
		410	if ($Coro::current == $Coro::main) {
		411	my $time = Event::time;
		412
		413	# this is the main coro, too bad, we have to block
		414	# till the operation succeeds, freezing the server :/
		415
		416	# TODO: use suspend/resume instead
		417	# (but this is cancel-safe)
		418	my $freeze_guard = freeze_mainloop;
		419
		420	my $busy = 1;
		421	my @res;
		422
		423	(async {
		424	@res = eval { $job->() };
		425	warn $@ if $@;
		426	undef $busy;
		427	})->prio (Coro::PRIO_MAX);
		428
		429	while ($busy) {
		430	Coro::cede or Event::one_event;
		431	}
		432
		433	$time = Event::time - $time;
		434
		435	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		436	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		437
		438	$tick_start += $time; # do not account sync jobs to server load
		439
		440	wantarray ? @res : $res[0]
		441	} else {
		442	# we are in another coroutine, how wonderful, everything just works
		443
		444	$job->()
		445	}
		446	}
		447
		448	=item $coro = cf::async_ext { BLOCK }
		449
		450	Like async, but this coro is automatically being canceled when the
		451	extension calling this is being unloaded.
		452
		453	=cut
		454
		455	sub async_ext(&) {
		456	my $cb = shift;
		457
		458	my $coro = &Coro::async ($cb);
		459
		460	$coro->on_destroy (sub {
		461	delete $EXT_CORO{$coro+0};
		462	});
		463	$EXT_CORO{$coro+0} = $coro;
		464
		465	$coro
		466	}
		467
		468	=item fork_call { }, $args
		469
		470	Executes the given code block with the given arguments in a seperate
		471	process, returning the results. Everything must be serialisable with
		472	Coro::Storable. May, of course, block. Note that the executed sub may
		473	never block itself or use any form of Event handling.
		474
		475	=cut
		476
		477	sub _store_scalar {
		478	open my $fh, ">", \my $buf
		479	or die "fork_call: cannot open fh-to-buf in child : $!";
		480	Storable::store_fd $_[0], $fh;
		481	close $fh;
		482
		483	$buf
		484	}
		485
		486	sub fork_call(&@) {
		487	my ($cb, @args) = @_;
		488
		489	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		490	# or die "socketpair: $!";
		491	pipe my $fh1, my $fh2
		492	or die "pipe: $!";
		493
		494	if (my $pid = fork) {
		495	close $fh2;
		496
		497	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		498	warn "pst<$res>" unless $res =~ /^pst/;
		499	$res = Coro::Storable::thaw $res;
		500
		501	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		502
		503	Carp::confess $$res unless "ARRAY" eq ref $res;
		504
		505	return wantarray ? @$res : $res->[-1];
		506	} else {
		507	reset_signals;
		508	local $SIG{__WARN__};
		509	local $SIG{__DIE__};
		510	# just in case, this hack effectively disables event
		511	# in the child. cleaner and slower would be canceling all watchers,
		512	# but this works for the time being.
		513	local $Coro::idle;
		514	$Coro::current->prio (Coro::PRIO_MAX);
		515
		516	eval {
		517	close $fh1;
		518
		519	my @res = eval { $cb->(@args) };
		520
		521	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		522	close $fh2;
		523	};
		524
		525	warn $@ if $@;
		526	_exit 0;
		527	}
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=cut
		540
		541	our $DB;
		542
		543	sub db_init {
		544	unless ($DB) {
		545	$DB = BDB::db_create $DB_ENV;
		546
		547	cf::sync_job {
		548	eval {
		549	$DB->set_flags (BDB::CHKSUM);
		550
		551	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		552	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		553	cf::cleanup "db_open(db): $!" if $!;
		554	};
		555	cf::cleanup "db_open(db): $@" if $@;
		556	};
		557	}
		558	}
		559
		560	sub db_get($$) {
		561	my $key = "$_[0]/$_[1]";
		562
		563	cf::sync_job {
		564	BDB::db_get $DB, undef, $key, my $data;
		565
		566	$! ? ()
		567	: $data
		568	}
		569	}
		570
		571	sub db_put($$$) {
		572	BDB::dbreq_pri 4;
		573	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		574	}
		575
		576	=item cf::cache $id => [$paths...], $processversion => $process
		577
		578	Generic caching function that returns the value of the resource $id,
		579	caching and regenerating as required.
		580
		581	This function can block.
		582
		583	=cut
		584
		585	sub cache {
		586	my ($id, $src, $processversion, $process) = @_;
		587
		588	my $meta =
		589	join "\x00",
		590	$processversion,
		591	map {
		592	aio_stat $_
		593	and Carp::croak "$_: $!";
		594
		595	($_, (stat _)[7,9])
		596	} @$src;
		597
		598	my $dbmeta = db_get cache => "$id/meta";
		599	if ($dbmeta ne $meta) {
		600	# changed, we may need to process
		601
		602	my @data;
		603	my $md5;
		604
		605	for (0 .. $#$src) {
		606	0 <= aio_load $src->[$_], $data[$_]
		607	or Carp::croak "$src->[$_]: $!";
		608	}
		609
		610	# if processing is expensive, check
		611	# checksum first
		612	if (1) {
		613	$md5 =
		614	join "\x00",
		615	$processversion,
		616	map {
		617	Coro::cede;
		618	($src->[$_], Digest::MD5::md5_hex $data[$_])
		619	} 0.. $#$src;
		620
		621
		622	my $dbmd5 = db_get cache => "$id/md5";
		623	if ($dbmd5 eq $md5) {
		624	db_put cache => "$id/meta", $meta;
		625
		626	return db_get cache => "$id/data";
		627	}
		628	}
		629
		630	my $t1 = Time::HiRes::time;
		631	my $data = $process->(\@data);
		632	my $t2 = Time::HiRes::time;
		633
		634	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		635
		636	db_put cache => "$id/data", $data;
		637	db_put cache => "$id/md5" , $md5;
		638	db_put cache => "$id/meta", $meta;
		639
		640	return $data;
		641	}
		642
		643	db_get cache => "$id/data"
		644	}
		645
		646	=item cf::datalog type => key => value, ...
		647
		648	Log a datalog packet of the given type with the given key-value pairs.
		649
		650	=cut
		651
		652	sub datalog($@) {
		653	my ($type, %kv) = @_;
		654	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		655	}
		656
		657	=back
		658
		659	=cut
106		660
107	#############################################################################	661	#############################################################################
108	# "new" plug-in system
109		662
110	=item $object->attach ($attachment, ...)	663	=head2 ATTACHABLE OBJECTS
111		664
112	Attach a pre-registered attachment to an object.	665	Many objects in crossfire are so-called attachable objects. That means you can
		666	attach callbacks/event handlers (a collection of which is called an "attachment")
		667	to it. All such attachable objects support the following methods.
113		668
114	=item $player->attach ($attachment, ...)	669	In the following description, CLASS can be any of C<global>, C<object>
		670	C<player>, C<client> or C<map> (i.e. the attachable objects in
		671	Crossfire TRT).
115		672
116	Attach a pre-registered attachment to a player.	673	=over 4
117		674
118	=item $map->attach ($attachment, ...) # not yet persistent	675	=item $attachable->attach ($attachment, key => $value...)
119		676
120	Attach a pre-registered attachment to a map.	677	=item $attachable->detach ($attachment)
121		678
122	=item cf::attach_global ...	679	Attach/detach a pre-registered attachment to a specific object and give it
		680	the specified key/value pairs as arguments.
123		681
124	Attach handlers for global events.	682	Example, attach a minesweeper attachment to the given object, making it a
		683	10x10 minesweeper game:
125		684
126	This and all following C<attach_*>-functions expect any number of the	685	$obj->attach (minesweeper => width => 10, height => 10);
127	following handler/hook descriptions:	686
		687	=item $bool = $attachable->attached ($name)
		688
		689	Checks wether the named attachment is currently attached to the object.
		690
		691	=item cf::CLASS->attach ...
		692
		693	=item cf::CLASS->detach ...
		694
		695	Define an anonymous attachment and attach it to all objects of the given
		696	CLASS. See the next function for an explanation of its arguments.
		697
		698	You can attach to global events by using the C<cf::global> class.
		699
		700	Example, log all player logins:
		701
		702	cf::player->attach (
		703	on_login => sub {
		704	my ($pl) = @_;
		705	...
		706	},
		707	);
		708
		709	Example, attach to the jeweler skill:
		710
		711	cf::object->attach (
		712	type => cf::SKILL,
		713	subtype => cf::SK_JEWELER,
		714	on_use_skill => sub {
		715	my ($sk, $ob, $part, $dir, $msg) = @_;
		716	...
		717	},
		718	);
		719
		720	=item cf::CLASS::attachment $name, ...
		721
		722	Register an attachment by C<$name> through which attachable objects of the
		723	given CLASS can refer to this attachment.
		724
		725	Some classes such as crossfire maps and objects can specify attachments
		726	that are attached at load/instantiate time, thus the need for a name.
		727
		728	These calls expect any number of the following handler/hook descriptions:
128		729
129	=over 4	730	=over 4
130		731
131	=item prio => $number	732	=item prio => $number
132		733
…		…
134	by another C<prio> setting). Lower priority handlers get executed	735	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	736	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	737	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	738	unless you know what you are doing.
138		739
		740	=item type => $type
		741
		742	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		743	given type of objects only (the additional parameter C<subtype> can be
		744	used to further limit to the given subtype).
		745
139	=item on_I<event> => \&cb	746	=item on_I<event> => \&cb
140		747
141	Call the given code reference whenever the named event happens (event is	748	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	749	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	750	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	759	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	760	object/class are recognised.
154		761
155	=back	762	=back
156		763
157	=item cf::attach_to_type $object_type, $subtype, ...	764	Example, define an attachment called "sockpuppet" that calls the given
		765	event handler when a monster attacks:
158		766
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	767	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	768	on_skill_attack => sub {
161	type.	769	my ($self, $victim) = @_;
		770	...
		771	}
		772	}
162		773
163	=item cf::attach_to_objects ...	774	=item $attachable->valid
164		775
165	Attach handlers to all objects. Do not use this except for debugging or	776	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	777	C-level object still exists. If you try to access an object that has no
167	the game.	778	valid C counterpart anymore you get an exception at runtime. This method
168		779	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	780	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		781
179	=cut	782	=cut
180		783
181	# the following variables are defined in .xs and must not be re-created	784	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	785	our @CB_GLOBAL = (); # registry for all global events
		786	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	787	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	788	our @CB_PLAYER = ();
		789	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	790	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	791	our @CB_MAP = ();
187		792
188	my %attachment;	793	my %attachment;
189		794
		795	sub cf::attachable::thawer_merge {
		796	# simply override everything except _meta
		797	local $_[0]{_meta};
		798	%{$_[0]} = %{$_[1]};
		799	}
		800
190	sub _attach_cb($\%$$$) {	801	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	802	my ($registry, $event, $prio, $cb) = @_;
192		803
193	use sort 'stable';	804	use sort 'stable';
194		805
195	$cb = [$prio, $cb];	806	$cb = [$prio, $cb];
196		807
197	@{$registry->[$event]} = sort	808	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	809	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	810	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	811	}
		812
		813	# hack
		814	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		815
204	# attach handles attaching event callbacks	816	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	817	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	818	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	819	sub _attach {
208	my ($registry, $klass, @arg) = @_;	820	my ($registry, $klass, @arg) = @_;
209		821
		822	my $object_type;
210	my $prio = 0;	823	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	824	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		825
		826	#TODO: get rid of this hack
		827	if ($attachable_klass{$klass}) {
		828	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		829	}
218		830
219	while (@arg) {	831	while (@arg) {
220	my $type = shift @arg;	832	my $type = shift @arg;
221		833
222	if ($type eq "prio") {	834	if ($type eq "prio") {
223	$prio = shift @arg;	835	$prio = shift @arg;
224		836
		837	} elsif ($type eq "type") {
		838	$object_type = shift @arg;
		839	$registry = $CB_TYPE[$object_type] ||= [];
		840
		841	} elsif ($type eq "subtype") {
		842	defined $object_type or Carp::croak "subtype specified without type";
		843	my $object_subtype = shift @arg;
		844	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		845
225	} elsif ($type eq "package") {	846	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	847	my $pkg = shift @arg;
227		848
228	while (my ($name, $id) = each %cb_id) {	849	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	850	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	851	_attach_cb $registry, $id, $prio, $cb;
231	}	852	}
232	}	853	}
233		854
234	} elsif (exists $cb_id{$type}) {	855	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	856	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		857
237	} elsif (ref $type) {	858	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	859	warn "attaching objects not supported, ignoring.\n";
239		860
240	} else {	861	} else {
241	shift @arg;	862	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	863	warn "attach argument '$type' not supported, ignoring.\n";
243	}	864	}
244	}	865	}
245
246	\%undo
247	}	866	}
248		867
249	sub _attach_attachment {	868	sub _object_attach {
250	my ($obj, $name, @args) = @_;	869	my ($obj, $name, %arg) = @_;
251		870
252	my $res;	871	return if exists $obj->{_attachment}{$name};
253		872
254	if (my $attach = $attachment{$name}) {	873	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	874	my $registry = $obj->registry;
256		875
257	for (@$attach) {	876	for (@$attach) {
258	my ($klass, @attach) = @$_;	877	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	878	_attach $registry, $klass, @attach;
260	}
261
262	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
263	for (@$cb) {
264	eval { $_->[1]->($obj, @args); };
265	if ($@) {
266	warn "$@";
267	warn "... while processing '$name' instantiate with args <@args>.\n";
268	}
269	}	879	}
270	}	880
		881	$obj->{$name} = \%arg;
271	} else {	882	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	883	warn "object uses attachment '$name' which is not available, postponing.\n";
273	}	884	}
274		885
275	push @{$obj->{_attachment}}, $name;	886	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	887	}
280		888
281	sub cf::object::attach {	889	sub cf::attachable::attach {
		890	if (ref $_[0]) {
		891	_object_attach @_;
		892	} else {
		893	_attach shift->_attach_registry, @_;
		894	}
		895	_recalc_want;
		896	};
		897
		898	# all those should be optimised
		899	sub cf::attachable::detach {
282	my ($obj, $name, @args) = @_;	900	my ($obj, $name) = @_;
283		901
284	_attach_attachment $obj, $name, @args;	902	if (ref $obj) {
285	}	903	delete $obj->{_attachment}{$name};
		904	reattach ($obj);
		905	} else {
		906	Carp::croak "cannot, currently, detach class attachments";
		907	}
		908	_recalc_want;
		909	};
286		910
287	sub cf::player::attach {	911	sub cf::attachable::attached {
288	my ($obj, $name, @args) = @_;	912	my ($obj, $name) = @_;
289		913
290	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	914	exists $obj->{_attachment}{$name}
291	}	915	}
292		916
293	sub cf::map::attach {	917	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, @args) = @_;	918	eval "#line " . __LINE__ . " 'cf.pm'
		919	sub cf::\L$klass\E::_attach_registry {
		920	(\\\@CB_$klass, KLASS_$klass)
		921	}
295		922
296	_attach_attachment KLASS_MAP, $obj, $name, @args;	923	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	924	my \$name = shift;
324		925
325	$attachment{$name} = [[KLASS_OBJECT, @_]];	926	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		927	}
		928	";
		929	die if $@;
326	}	930	}
327		931
328	our $override;	932	our $override;
329	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	933	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
330		934
331	sub override {	935	sub override {
332	$override = 1;	936	$override = 1;
333	@invoke_results = ();	937	@INVOKE_RESULTS = (@_);
334	}	938	}
335		939
336	sub do_invoke {	940	sub do_invoke {
337	my $event = shift;	941	my $event = shift;
338	my $callbacks = shift;	942	my $callbacks = shift;
339		943
340	@invoke_results = ();	944	@INVOKE_RESULTS = ();
341		945
342	local $override;	946	local $override;
343		947
344	for (@$callbacks) {	948	for (@$callbacks) {
345	eval { &{$_->[1]} };	949	eval { &{$_->[1]} };
346		950
347	if ($@) {	951	if ($@) {
348	warn "$@";	952	warn "$@";
349	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	953	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
350	override;	954	override;
351	}	955	}
352		956
353	return 1 if $override;	957	return 1 if $override;
354	}	958	}
355		959
356	0	960	0
357	}	961	}
		962
		963	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		964
		965	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		966
		967	Generate an object-specific event with the given arguments.
		968
		969	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		970	removed in future versions), and there is no public API to access override
		971	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		972
		973	=back
		974
		975	=cut
358		976
359	#############################################################################	977	#############################################################################
360	# object support	978	# object support
		979	#
361		980
362	sub instantiate {	981	sub _can_merge {
363	my ($obj, $data) = @_;	982	my ($ob1, $ob2) = @_;
364		983
365	$data = from_json $data;	984	local $Storable::canonical = 1;
		985	my $fob1 = Storable::freeze $ob1;
		986	my $fob2 = Storable::freeze $ob2;
366		987
367	for (@$data) {	988	$fob1 eq $fob2
368	my ($name, $args) = @$_;
369	attach $obj, $name, @{$args || [] };
370	}
371	}	989	}
372		990
373	# basically do the same as instantiate, without calling instantiate
374	sub reattach {	991	sub reattach {
		992	# basically do the same as instantiate, without calling instantiate
375	my ($obj) = @_;	993	my ($obj) = @_;
		994
		995	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		996
376	my $registry = $obj->registry;	997	my $registry = $obj->registry;
377		998
378	@$registry = ();	999	@$registry = ();
379		1000
		1001	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1002
380	for my $name (@{ $obj->{_attachment} }) {	1003	for my $name (keys %{ $obj->{_attachment} || {} }) {
381	if (my $attach = $attachment{$name}) {	1004	if (my $attach = $attachment{$name}) {
382	for (@$attach) {	1005	for (@$attach) {
383	my ($klass, @attach) = @$_;	1006	my ($klass, @attach) = @$_;
384	_attach @$registry, $klass, @attach;	1007	_attach $registry, $klass, @attach;
385	}	1008	}
386	} else {	1009	} else {
387	warn "object uses attachment '$name' that is not available, postponing.\n";	1010	warn "object uses attachment '$name' that is not available, postponing.\n";
388	}	1011	}
389	}	1012	}
390	}	1013	}
391		1014
		1015	cf::attachable->attach (
		1016	prio => -1000000,
		1017	on_instantiate => sub {
		1018	my ($obj, $data) = @_;
		1019
		1020	$data = from_json $data;
		1021
		1022	for (@$data) {
		1023	my ($name, $args) = @$_;
		1024
		1025	$obj->attach ($name, %{$args || {} });
		1026	}
		1027	},
		1028	on_reattach => \&reattach,
		1029	on_clone => sub {
		1030	my ($src, $dst) = @_;
		1031
		1032	@{$dst->registry} = @{$src->registry};
		1033
		1034	%$dst = %$src;
		1035
		1036	%{$dst->{_attachment}} = %{$src->{_attachment}}
		1037	if exists $src->{_attachment};
		1038	},
		1039	);
		1040
392	sub object_freezer_save {	1041	sub object_freezer_save {
393	my ($filename, $objs) = @_;	1042	my ($filename, $rdata, $objs) = @_;
394		1043
395	$filename .= ".pst";	1044	sync_job {
		1045	if (length $$rdata) {
		1046	warn sprintf "saving %s (%d,%d)\n",
		1047	$filename, length $$rdata, scalar @$objs;
396		1048
397	if (@$objs) {	1049	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
398	open my $fh, ">:raw", "$filename~";	1050	chmod SAVE_MODE, $fh;
399	chmod $fh, SAVE_MODE;	1051	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
400	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1052	aio_fsync $fh if $cf::USE_FSYNC;
401	close $fh;	1053	close $fh;
		1054
		1055	if (@$objs) {
		1056	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1057	chmod SAVE_MODE, $fh;
		1058	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1059	aio_write $fh, 0, (length $data), $data, 0;
		1060	aio_fsync $fh if $cf::USE_FSYNC;
		1061	close $fh;
		1062	aio_rename "$filename.pst~", "$filename.pst";
		1063	}
		1064	} else {
		1065	aio_unlink "$filename.pst";
		1066	}
		1067
402	rename "$filename~", $filename;	1068	aio_rename "$filename~", $filename;
		1069	} else {
		1070	warn "FATAL: $filename~: $!\n";
		1071	}
403	} else {	1072	} else {
404	unlink $filename;	1073	aio_unlink $filename;
		1074	aio_unlink "$filename.pst";
		1075	}
405	}	1076	}
		1077	}
		1078
		1079	sub object_freezer_as_string {
		1080	my ($rdata, $objs) = @_;
		1081
		1082	use Data::Dumper;
		1083
		1084	$$rdata . Dumper $objs
406	}	1085	}
407		1086
408	sub object_thawer_load {	1087	sub object_thawer_load {
409	my ($filename) = @_;	1088	my ($filename) = @_;
410		1089
411	open my $fh, "<:raw:perlio", "$filename.pst"	1090	my ($data, $av);
		1091
		1092	(aio_load $filename, $data) >= 0
412	or return;	1093	or return;
413		1094
414	eval { local $/; (Storable::thaw <$fh>)->{objs} }	1095	unless (aio_stat "$filename.pst") {
415	}	1096	(aio_load "$filename.pst", $av) >= 0
416		1097	or return;
417	attach_to_objects	1098	$av = eval { (Storable::thaw $av)->{objs} };
418	prio => -1000000,
419	on_clone => sub {
420	my ($src, $dst) = @_;
421
422	@{$dst->registry} = @{$src->registry};
423
424	%$dst = %$src;
425
426	$dst->{_attachment} = [@{ $src->{_attachment} }]
427	if exists $src->{_attachment};
428	},	1099	}
429	;	1100
		1101	warn sprintf "loading %s (%d)\n",
		1102	$filename, length $data, scalar @{$av || []};
		1103	return ($data, $av);
		1104	}
		1105
		1106	=head2 COMMAND CALLBACKS
		1107
		1108	=over 4
		1109
		1110	=cut
430		1111
431	#############################################################################	1112	#############################################################################
432	# old plug-in events	1113	# command handling &c
433		1114
434	sub inject_event {	1115	=item cf::register_command $name => \&callback($ob,$args);
435	my $extension = shift;
436	my $event_code = shift;
437		1116
438	my $cb = $hook[$event_code]{$extension}	1117	Register a callback for execution when the client sends the user command
439	or return;	1118	$name.
440		1119
441	&$cb	1120	=cut
442	}
443
444	sub inject_global_event {
445	my $event = shift;
446
447	my $cb = $hook[$event]
448	or return;
449
450	List::Util::max map &$_, values %$cb
451	}
452
453	sub inject_command {
454	my ($name, $obj, $params) = @_;
455
456	for my $cmd (@{ $command{$name} }) {
457	$cmd->[1]->($obj, $params);
458	}
459
460	-1
461	}
462		1121
463	sub register_command {	1122	sub register_command {
464	my ($name, $time, $cb) = @_;	1123	my ($name, $cb) = @_;
465		1124
466	my $caller = caller;	1125	my $caller = caller;
467	#warn "registering command '$name/$time' to '$caller'";	1126	#warn "registering command '$name/$time' to '$caller'";
468		1127
469	push @{ $command{$name} }, [$time, $cb, $caller];	1128	push @{ $COMMAND{$name} }, [$caller, $cb];
470	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
471	}	1129	}
		1130
		1131	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1132
		1133	Register a callback for execution when the client sends an (synchronous)
		1134	extcmd packet. Ext commands will be processed in the order they are
		1135	received by the server, like other user commands. The first argument is
		1136	the logged-in player. Ext commands can only be processed after a player
		1137	has logged in successfully.
		1138
		1139	If the callback returns something, it is sent back as if reply was being
		1140	called.
		1141
		1142	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1143
		1144	Register a callback for execution when the client sends an (asynchronous)
		1145	exticmd packet. Exti commands are processed by the server as soon as they
		1146	are received, i.e. out of order w.r.t. other commands. The first argument
		1147	is a client socket. Exti commands can be received anytime, even before
		1148	log-in.
		1149
		1150	If the callback returns something, it is sent back as if reply was being
		1151	called.
		1152
		1153	=cut
472		1154
473	sub register_extcmd {	1155	sub register_extcmd {
474	my ($name, $cb) = @_;	1156	my ($name, $cb) = @_;
475		1157
476	my $caller = caller;	1158	$EXTCMD{$name} = $cb;
477	#warn "registering extcmd '$name' to '$caller'";
478
479	$extcmd{$name} = [$cb, $caller];
480	}	1159	}
481		1160
482	sub register {	1161	sub register_exticmd {
483	my ($base, $pkg) = @_;	1162	my ($name, $cb) = @_;
484		1163
485	#TODO	1164	$EXTICMD{$name} = $cb;
486	}	1165	}
487		1166
488	sub load_extension {	1167	cf::player->attach (
489	my ($path) = @_;	1168	on_command => sub {
		1169	my ($pl, $name, $params) = @_;
490		1170
491	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1171	my $cb = $COMMAND{$name}
492	my $base = $1;	1172	or return;
493	my $pkg = $1;
494	$pkg =~ s/[^[:word:]]/_/g;
495	$pkg = "ext::$pkg";
496		1173
497	warn "loading '$path' into '$pkg'\n";	1174	for my $cmd (@$cb) {
498		1175	$cmd->[1]->($pl->ob, $params);
499	open my $fh, "<:utf8", $path
500	or die "$path: $!";
501
502	my $source =
503	"package $pkg; use strict; use utf8;\n"
504	. "#line 1 \"$path\"\n{\n"
505	. (do { local $/; <$fh> })
506	. "\n};\n1";
507
508	eval $source
509	or die "$path: $@";
510
511	push @exts, $pkg;
512	$ext_pkg{$base} = $pkg;
513
514	# no strict 'refs';
515	# @{"$pkg\::ISA"} = ext::;
516
517	register $base, $pkg;
518	}
519
520	sub unload_extension {
521	my ($pkg) = @_;
522
523	warn "removing extension $pkg\n";
524
525	# remove hooks
526	#TODO
527	# for my $idx (0 .. $#PLUGIN_EVENT) {
528	# delete $hook[$idx]{$pkg};
529	# }
530
531	# remove commands
532	for my $name (keys %command) {
533	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
534
535	if (@cb) {
536	$command{$name} = \@cb;
537	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
538	} else {
539	delete $command{$name};
540	delete $COMMAND{"$name\000"};
541	}
542	}
543
544	# remove extcmds
545	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
546	delete $extcmd{$name};
547	}
548
549	if (my $cb = $pkg->can ("unload")) {
550	eval {
551	$cb->($pkg);
552	1
553	} or warn "$pkg unloaded, but with errors: $@";
554	}
555
556	Symbol::delete_package $pkg;
557	}
558
559	sub load_extensions {
560	my $LIBDIR = maps_directory "perl";
561
562	for my $ext (<$LIBDIR/*.ext>) {
563	next unless -r $ext;
564	eval {
565	load_extension $ext;
566	1
567	} or warn "$ext not loaded: $@";
568	}
569	}
570
571	sub _perl_reload(&) {
572	my ($msg) = @_;
573
574	$msg->("reloading...");
575
576	eval {
577	# 1. cancel all watchers
578	$_->cancel for Event::all_watchers;
579
580	# 2. unload all extensions
581	for (@exts) {
582	$msg->("unloading <$_>");
583	unload_extension $_;
584	}
585
586	# 3. unload all modules loaded from $LIBDIR
587	while (my ($k, $v) = each %INC) {
588	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
589
590	$msg->("removing <$k>");
591	delete $INC{$k};
592
593	$k =~ s/\.pm$//;
594	$k =~ s/\//::/g;
595
596	if (my $cb = $k->can ("unload_module")) {
597	$cb->();
598	}
599
600	Symbol::delete_package $k;
601	}
602
603	# 4. get rid of safe::, as good as possible
604	Symbol::delete_package "safe::$_"
605	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
606
607	# 5. remove register_script_function callbacks
608	# TODO
609
610	# 6. unload cf.pm "a bit"
611	delete $INC{"cf.pm"};
612
613	# don't, removes xs symbols, too,
614	# and global variables created in xs
615	#Symbol::delete_package __PACKAGE__;
616
617	# 7. reload cf.pm
618	$msg->("reloading cf.pm");
619	require cf;
620	};
621	$msg->($@) if $@;
622
623	$msg->("reloaded");
624	};
625
626	sub perl_reload() {
627	_perl_reload {
628	warn $_[0];
629	print "$_[0]\n";
630	};
631	}
632
633	register_command "perl-reload", 0, sub {
634	my ($who, $arg) = @_;
635
636	if ($who->flag (FLAG_WIZ)) {
637	_perl_reload {
638	warn $_[0];
639	$who->message ($_[0]);
640	};	1176	}
		1177
		1178	cf::override;
641	}	1179	},
642	};
643
644	#############################################################################
645	# extcmd framework, basically convert ext <msg>
646	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
647
648	attach_to_players
649	on_extcmd => sub {	1180	on_extcmd => sub {
650	my ($pl, $buf) = @_;	1181	my ($pl, $buf) = @_;
651		1182
652	my $msg = eval { from_json $buf };	1183	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
653		1184
654	if (ref $msg) {	1185	if (ref $msg) {
		1186	my ($type, $reply, @payload) =
		1187	"ARRAY" eq ref $msg
		1188	? @$msg
		1189	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1190
655	if (my $cb = $extcmd{$msg->{msgtype}}) {	1191	if (my $cb = $EXTCMD{$type}) {
656	if (my %reply = $cb->[0]->($pl, $msg)) {	1192	my @reply = $cb->($pl, @payload);
		1193
657	$pl->ext_reply ($msg->{msgid}, %reply);	1194	$pl->ext_reply ($reply, @reply)
658	}	1195	if $reply;
659	}	1196	}
660	} else {	1197	} else {
661	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1198	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
662	}	1199	}
663		1200
664	cf::override;	1201	cf::override;
665	},	1202	},
666	;	1203	);
		1204
		1205	sub load_extensions {
		1206	cf::sync_job {
		1207	my %todo;
		1208
		1209	for my $path (<$LIBDIR/*.ext>) {
		1210	next unless -r $path;
		1211
		1212	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1213	my $base = $1;
		1214	my $pkg = $1;
		1215	$pkg =~ s/[^[:word:]]/_/g;
		1216	$pkg = "ext::$pkg";
		1217
		1218	open my $fh, "<:utf8", $path
		1219	or die "$path: $!";
		1220
		1221	my $source = do { local $/; <$fh> };
		1222
		1223	my %ext = (
		1224	path => $path,
		1225	base => $base,
		1226	pkg => $pkg,
		1227	);
		1228
		1229	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1230	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1231
		1232	$ext{source} =
		1233	"package $pkg; use strict; use utf8;\n"
		1234	. "#line 1 \"$path\"\n{\n"
		1235	. $source
		1236	. "\n};\n1";
		1237
		1238	$todo{$base} = \%ext;
		1239	}
		1240
		1241	my %done;
		1242	while (%todo) {
		1243	my $progress;
		1244
		1245	while (my ($k, $v) = each %todo) {
		1246	for (split /,\s*/, $v->{meta}{depends}) {
		1247	goto skip
		1248	unless exists $done{$_};
		1249	}
		1250
		1251	warn "... loading '$k' into '$v->{pkg}'\n";
		1252
		1253	unless (eval $v->{source}) {
		1254	my $msg = $@ ? "$v->{path}: $@\n"
		1255	: "$v->{base}: extension inactive.\n";
		1256
		1257	if (exists $v->{meta}{mandatory}) {
		1258	warn $msg;
		1259	warn "mandatory extension failed to load, exiting.\n";
		1260	exit 1;
		1261	}
		1262
		1263	warn $msg;
		1264	}
		1265
		1266	$done{$k} = delete $todo{$k};
		1267	push @EXTS, $v->{pkg};
		1268	$progress = 1;
		1269	}
		1270
		1271	skip:
		1272	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1273	unless $progress;
		1274	}
		1275	};
		1276	}
667		1277
668	#############################################################################	1278	#############################################################################
669	# load/save/clean perl data associated with a map
670		1279
671	*cf::mapsupport::on_clean = sub {	1280	=back
		1281
		1282	=head2 CORE EXTENSIONS
		1283
		1284	Functions and methods that extend core crossfire objects.
		1285
		1286	=cut
		1287
		1288	package cf::player;
		1289
		1290	use Coro::AIO;
		1291
		1292	=head3 cf::player
		1293
		1294	=over 4
		1295
		1296	=item cf::player::find $login
		1297
		1298	Returns the given player object, loading it if necessary (might block).
		1299
		1300	=cut
		1301
		1302	sub playerdir($) {
		1303	"$PLAYERDIR/"
		1304	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1305	}
		1306
		1307	sub path($) {
		1308	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1309
		1310	(playerdir $login) . "/playerdata"
		1311	}
		1312
		1313	sub find_active($) {
		1314	$cf::PLAYER{$_[0]}
		1315	and $cf::PLAYER{$_[0]}->active
		1316	and $cf::PLAYER{$_[0]}
		1317	}
		1318
		1319	sub exists($) {
		1320	my ($login) = @_;
		1321
		1322	$cf::PLAYER{$login}
		1323	or cf::sync_job { !aio_stat path $login }
		1324	}
		1325
		1326	sub find($) {
		1327	return $cf::PLAYER{$_[0]} || do {
		1328	my $login = $_[0];
		1329
		1330	my $guard = cf::lock_acquire "user_find:$login";
		1331
		1332	$cf::PLAYER{$_[0]} || do {
		1333	# rename old playerfiles to new ones
		1334	#TODO: remove when no longer required
		1335	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1336	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1337	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1338	aio_unlink +(playerdir $login) . "/$login.pl";
		1339
		1340	my $pl = load_pl path $login
		1341	or return;
		1342	$cf::PLAYER{$login} = $pl
		1343	}
		1344	}
		1345	}
		1346
		1347	sub save($) {
		1348	my ($pl) = @_;
		1349
		1350	return if $pl->{deny_save};
		1351
		1352	my $path = path $pl;
		1353	my $guard = cf::lock_acquire "user_save:$path";
		1354
		1355	return if $pl->{deny_save};
		1356
		1357	aio_mkdir playerdir $pl, 0770;
		1358	$pl->{last_save} = $cf::RUNTIME;
		1359
		1360	$pl->save_pl ($path);
		1361	Coro::cede;
		1362	}
		1363
		1364	sub new($) {
		1365	my ($login) = @_;
		1366
		1367	my $self = create;
		1368
		1369	$self->ob->name ($login);
		1370	$self->{deny_save} = 1;
		1371
		1372	$cf::PLAYER{$login} = $self;
		1373
		1374	$self
		1375	}
		1376
		1377	=item $pl->quit_character
		1378
		1379	Nukes the player without looking back. If logged in, the connection will
		1380	be destroyed. May block for a long time.
		1381
		1382	=cut
		1383
		1384	sub quit_character {
		1385	my ($pl) = @_;
		1386
		1387	my $name = $pl->ob->name;
		1388
		1389	$pl->{deny_save} = 1;
		1390	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1391
		1392	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1393	$pl->deactivate;
		1394	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1395	$pl->ns->destroy if $pl->ns;
		1396
		1397	my $path = playerdir $pl;
		1398	my $temp = "$path~$cf::RUNTIME~deleting~";
		1399	aio_rename $path, $temp;
		1400	delete $cf::PLAYER{$pl->ob->name};
		1401	$pl->destroy;
		1402
		1403	my $prefix = qr<^~\Q$name\E/>;
		1404
		1405	# nuke player maps
		1406	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1407
		1408	IO::AIO::aio_rmtree $temp;
		1409	}
		1410
		1411	=item $pl->kick
		1412
		1413	Kicks a player out of the game. This destroys the connection.
		1414
		1415	=cut
		1416
		1417	sub kick {
		1418	my ($pl, $kicker) = @_;
		1419
		1420	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1421	$pl->killer ("kicked");
		1422	$pl->ns->destroy;
		1423	}
		1424
		1425	=item cf::player::list_logins
		1426
		1427	Returns am arrayref of all valid playernames in the system, can take a
		1428	while and may block, so not sync_job-capable, ever.
		1429
		1430	=cut
		1431
		1432	sub list_logins {
		1433	my $dirs = aio_readdir $PLAYERDIR
		1434	or return [];
		1435
		1436	my @logins;
		1437
		1438	for my $login (@$dirs) {
		1439	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1440	aio_read $fh, 0, 512, my $buf, 0 or next;
		1441	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1442
		1443	utf8::decode $login;
		1444	push @logins, $login;
		1445	}
		1446
		1447	\@logins
		1448	}
		1449
		1450	=item $player->maps
		1451
		1452	Returns an arrayref of map paths that are private for this
		1453	player. May block.
		1454
		1455	=cut
		1456
		1457	sub maps($) {
		1458	my ($pl) = @_;
		1459
		1460	$pl = ref $pl ? $pl->ob->name : $pl;
		1461
		1462	my $files = aio_readdir playerdir $pl
		1463	or return;
		1464
		1465	my @paths;
		1466
		1467	for (@$files) {
		1468	utf8::decode $_;
		1469	next if /\.(?:pl|pst)$/;
		1470	next unless /^$PATH_SEP/o;
		1471
		1472	push @paths, cf::map::normalise "~$pl/$_";
		1473	}
		1474
		1475	\@paths
		1476	}
		1477
		1478	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1479
		1480	Expand crossfire pod fragments into protocol xml.
		1481
		1482	=cut
		1483
		1484	sub expand_cfpod {
		1485	((my $self), (local $_)) = @_;
		1486
		1487	# escape & and <
		1488	s/&/&amp;/g;
		1489	s/(?<![BIUGH])</&lt;/g;
		1490
		1491	# this is buggy, it needs to properly take care of nested <'s
		1492
		1493	1 while
		1494	# replace B<>, I<>, U<> etc.
		1495	s/B<([^\>]*)>/<b>$1<\/b>/
		1496	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1497	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1498	# replace G<male|female> tags
		1499	|| s{G<([^>|]*)\|([^>]*)>}{
		1500	$self->gender ? $2 : $1
		1501	}ge
		1502	# replace H<hint text>
		1503	|| s{H<([^\>]*)>}
		1504	{
		1505	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1506	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1507	"")
		1508	[$self->{hintmode}]
		1509	}ge;
		1510
		1511	# create single paragraphs (very hackish)
		1512	s/(?<=\S)\n(?=\w)/ /g;
		1513
		1514	# compress some whitespace
		1515	s/\s+\n/\n/g; # ws line-ends
		1516	s/\n\n+/\n/g; # double lines
		1517	s/^\n+//; # beginning lines
		1518	s/\n+$//; # ending lines
		1519
		1520	$_
		1521	}
		1522
		1523	sub hintmode {
		1524	$_[0]{hintmode} = $_[1] if @_ > 1;
		1525	$_[0]{hintmode}
		1526	}
		1527
		1528	=item $player->ext_reply ($msgid, @msg)
		1529
		1530	Sends an ext reply to the player.
		1531
		1532	=cut
		1533
		1534	sub ext_reply($$@) {
		1535	my ($self, $id, @msg) = @_;
		1536
		1537	if ($self->ns->extcmd == 2) {
		1538	$self->send ("ext " . $self->ns->{json_coder}->encode (["reply-$id", @msg]));
		1539	} elsif ($self->ns->extcmd == 1) {
		1540	#TODO: version 1, remove
		1541	unshift @msg, msgtype => "reply", msgid => $id;
		1542	$self->send ("ext " . $self->ns->{json_coder}->encode ({@msg}));
		1543	}
		1544	}
		1545
		1546	=item $player->ext_msg ($type, @msg)
		1547
		1548	Sends an ext event to the client.
		1549
		1550	=cut
		1551
		1552	sub ext_msg($$@) {
		1553	my ($self, $type, @msg) = @_;
		1554
		1555	$self->ns->ext_msg ($type, @msg);
		1556	}
		1557
		1558	=head3 cf::region
		1559
		1560	=over 4
		1561
		1562	=cut
		1563
		1564	package cf::region;
		1565
		1566	=item cf::region::find_by_path $path
		1567
		1568	Tries to decuce the likely region for a map knowing only its path.
		1569
		1570	=cut
		1571
		1572	sub find_by_path($) {
		1573	my ($path) = @_;
		1574
		1575	my ($match, $specificity);
		1576
		1577	for my $region (list) {
		1578	if ($region->{match} && $path =~ $region->{match}) {
		1579	($match, $specificity) = ($region, $region->specificity)
		1580	if $region->specificity > $specificity;
		1581	}
		1582	}
		1583
		1584	$match
		1585	}
		1586
		1587	=back
		1588
		1589	=head3 cf::map
		1590
		1591	=over 4
		1592
		1593	=cut
		1594
		1595	package cf::map;
		1596
		1597	use Fcntl;
		1598	use Coro::AIO;
		1599
		1600	use overload
		1601	'""' => \&as_string,
		1602	fallback => 1;
		1603
		1604	our $MAX_RESET = 3600;
		1605	our $DEFAULT_RESET = 3000;
		1606
		1607	sub generate_random_map {
		1608	my ($self, $rmp) = @_;
		1609	# mit "rum" bekleckern, nicht
		1610	$self->_create_random_map (
		1611	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1612	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1613	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1614	$rmp->{exit_on_final_map},
		1615	$rmp->{xsize}, $rmp->{ysize},
		1616	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1617	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1618	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1619	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1620	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1621	(cf::region::find $rmp->{region}), $rmp->{custom}
		1622	)
		1623	}
		1624
		1625	=item cf::map->register ($regex, $prio)
		1626
		1627	Register a handler for the map path matching the given regex at the
		1628	givne priority (higher is better, built-in handlers have priority 0, the
		1629	default).
		1630
		1631	=cut
		1632
		1633	sub register {
		1634	my (undef, $regex, $prio) = @_;
		1635	my $pkg = caller;
		1636
		1637	no strict;
		1638	push @{"$pkg\::ISA"}, __PACKAGE__;
		1639
		1640	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1641	}
		1642
		1643	# also paths starting with '/'
		1644	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1645
		1646	sub thawer_merge {
		1647	my ($self, $merge) = @_;
		1648
		1649	# we have to keep some variables in memory intact
		1650	local $self->{path};
		1651	local $self->{load_path};
		1652
		1653	$self->SUPER::thawer_merge ($merge);
		1654	}
		1655
		1656	sub normalise {
		1657	my ($path, $base) = @_;
		1658
		1659	$path = "$path"; # make sure its a string
		1660
		1661	$path =~ s/\.map$//;
		1662
		1663	# map plan:
		1664	#
		1665	# /! non-realised random map exit (special hack!)
		1666	# {... are special paths that are not being touched
		1667	# ?xxx/... are special absolute paths
		1668	# ?random/... random maps
		1669	# /... normal maps
		1670	# ~user/... per-player map of a specific user
		1671
		1672	$path =~ s/$PATH_SEP/\//go;
		1673
		1674	# treat it as relative path if it starts with
		1675	# something that looks reasonable
		1676	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1677	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1678
		1679	$base =~ s{[^/]+/?$}{};
		1680	$path = "$base/$path";
		1681	}
		1682
		1683	for ($path) {
		1684	redo if s{//}{/};
		1685	redo if s{/\.?/}{/};
		1686	redo if s{/[^/]+/\.\./}{/};
		1687	}
		1688
		1689	$path
		1690	}
		1691
		1692	sub new_from_path {
		1693	my (undef, $path, $base) = @_;
		1694
		1695	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1696
		1697	$path = normalise $path, $base;
		1698
		1699	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1700	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1701	my $self = bless cf::map::new, $pkg;
		1702	$self->{path} = $path; $self->path ($path);
		1703	$self->init; # pass $1 etc.
		1704	return $self;
		1705	}
		1706	}
		1707
		1708	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1709	()
		1710	}
		1711
		1712	sub init {
		1713	my ($self) = @_;
		1714
		1715	$self
		1716	}
		1717
		1718	sub as_string {
		1719	my ($self) = @_;
		1720
		1721	"$self->{path}"
		1722	}
		1723
		1724	# the displayed name, this is a one way mapping
		1725	sub visible_name {
		1726	&as_string
		1727	}
		1728
		1729	# the original (read-only) location
		1730	sub load_path {
		1731	my ($self) = @_;
		1732
		1733	"$MAPDIR/$self->{path}.map"
		1734	}
		1735
		1736	# the temporary/swap location
		1737	sub save_path {
		1738	my ($self) = @_;
		1739
		1740	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1741	"$TMPDIR/$path.map"
		1742	}
		1743
		1744	# the unique path, undef == no special unique path
		1745	sub uniq_path {
		1746	my ($self) = @_;
		1747
		1748	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1749	"$UNIQUEDIR/$path"
		1750	}
		1751
		1752	# and all this just because we cannot iterate over
		1753	# all maps in C++...
		1754	sub change_all_map_light {
		1755	my ($change) = @_;
		1756
		1757	$_->change_map_light ($change)
		1758	for grep $_->outdoor, values %cf::MAP;
		1759	}
		1760
		1761	sub decay_objects {
		1762	my ($self) = @_;
		1763
		1764	return if $self->{deny_reset};
		1765
		1766	$self->do_decay_objects;
		1767	}
		1768
		1769	sub unlink_save {
		1770	my ($self) = @_;
		1771
		1772	utf8::encode (my $save = $self->save_path);
		1773	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1774	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1775	}
		1776
		1777	sub load_header_from($) {
		1778	my ($self, $path) = @_;
		1779
		1780	utf8::encode $path;
		1781	#aio_open $path, O_RDONLY, 0
		1782	# or return;
		1783
		1784	$self->_load_header ($path)
		1785	or return;
		1786
		1787	$self->{load_path} = $path;
		1788
		1789	1
		1790	}
		1791
		1792	sub load_header_orig {
		1793	my ($self) = @_;
		1794
		1795	$self->load_header_from ($self->load_path)
		1796	}
		1797
		1798	sub load_header_temp {
		1799	my ($self) = @_;
		1800
		1801	$self->load_header_from ($self->save_path)
		1802	}
		1803
		1804	sub prepare_temp {
		1805	my ($self) = @_;
		1806
		1807	$self->last_access ((delete $self->{last_access})
		1808	|| $cf::RUNTIME); #d#
		1809	# safety
		1810	$self->{instantiate_time} = $cf::RUNTIME
		1811	if $self->{instantiate_time} > $cf::RUNTIME;
		1812	}
		1813
		1814	sub prepare_orig {
		1815	my ($self) = @_;
		1816
		1817	$self->{load_original} = 1;
		1818	$self->{instantiate_time} = $cf::RUNTIME;
		1819	$self->last_access ($cf::RUNTIME);
		1820	$self->instantiate;
		1821	}
		1822
		1823	sub load_header {
		1824	my ($self) = @_;
		1825
		1826	if ($self->load_header_temp) {
		1827	$self->prepare_temp;
		1828	} else {
		1829	$self->load_header_orig
		1830	or return;
		1831	$self->prepare_orig;
		1832	}
		1833
		1834	$self->{deny_reset} = 1
		1835	if $self->no_reset;
		1836
		1837	$self->default_region (cf::region::find_by_path $self->{path})
		1838	unless $self->default_region;
		1839
		1840	1
		1841	}
		1842
		1843	sub find;
		1844	sub find {
		1845	my ($path, $origin) = @_;
		1846
		1847	$path = normalise $path, $origin && $origin->path;
		1848
		1849	cf::lock_wait "map_find:$path";
		1850
		1851	$cf::MAP{$path} || do {
		1852	my $guard = cf::lock_acquire "map_find:$path";
		1853	my $map = new_from_path cf::map $path
		1854	or return;
		1855
		1856	$map->{last_save} = $cf::RUNTIME;
		1857
		1858	$map->load_header
		1859	or return;
		1860
		1861	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1862	# doing this can freeze the server in a sync job, obviously
		1863	#$cf::WAIT_FOR_TICK->wait;
		1864	$map->reset;
		1865	undef $guard;
		1866	return find $path;
		1867	}
		1868
		1869	$cf::MAP{$path} = $map
		1870	}
		1871	}
		1872
		1873	sub pre_load { }
		1874	sub post_load { }
		1875
		1876	sub load {
		1877	my ($self) = @_;
		1878
		1879	local $self->{deny_reset} = 1; # loading can take a long time
		1880
		1881	my $path = $self->{path};
		1882
		1883	{
		1884	my $guard = cf::lock_acquire "map_load:$path";
		1885
		1886	return if $self->in_memory != cf::MAP_SWAPPED;
		1887
		1888	$self->in_memory (cf::MAP_LOADING);
		1889
		1890	$self->alloc;
		1891
		1892	$self->pre_load;
		1893	Coro::cede;
		1894
		1895	$self->_load_objects ($self->{load_path}, 1)
		1896	or return;
		1897
		1898	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1899	if delete $self->{load_original};
		1900
		1901	if (my $uniq = $self->uniq_path) {
		1902	utf8::encode $uniq;
		1903	if (aio_open $uniq, O_RDONLY, 0) {
		1904	$self->clear_unique_items;
		1905	$self->_load_objects ($uniq, 0);
		1906	}
		1907	}
		1908
		1909	Coro::cede;
		1910	# now do the right thing for maps
		1911	$self->link_multipart_objects;
		1912	$self->difficulty ($self->estimate_difficulty)
		1913	unless $self->difficulty;
		1914	Coro::cede;
		1915
		1916	unless ($self->{deny_activate}) {
		1917	$self->decay_objects;
		1918	$self->fix_auto_apply;
		1919	$self->update_buttons;
		1920	Coro::cede;
		1921	$self->set_darkness_map;
		1922	Coro::cede;
		1923	$self->activate;
		1924	}
		1925
		1926	$self->in_memory (cf::MAP_IN_MEMORY);
		1927	}
		1928
		1929	$self->post_load;
		1930	}
		1931
		1932	sub customise_for {
		1933	my ($self, $ob) = @_;
		1934
		1935	return find "~" . $ob->name . "/" . $self->{path}
		1936	if $self->per_player;
		1937
		1938	# return find "?party/" . $ob->name . "/" . $self->{path}
		1939	# if $self->per_party;
		1940
		1941	$self
		1942	}
		1943
		1944	# find and load all maps in the 3x3 area around a map
		1945	sub load_diag {
672	my ($map) = @_;	1946	my ($map) = @_;
673		1947
674	my $path = $map->tmpname;	1948	my @diag; # diagonal neighbours
675	defined $path or return;
676		1949
677	unlink "$path.cfperl";	1950	for (0 .. 3) {
678	unlink "$path.pst";	1951	my $neigh = $map->tile_path ($_)
679	};	1952	or next;
		1953	$neigh = find $neigh, $map
		1954	or next;
		1955	$neigh->load;
680		1956
681	*cf::mapsupport::on_swapin =	1957	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
682	*cf::mapsupport::on_load = sub {	1958	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1959	}
		1960
		1961	for (@diag) {
		1962	my $neigh = find @$_
		1963	or next;
		1964	$neigh->load;
		1965	}
		1966	}
		1967
		1968	sub find_sync {
		1969	my ($path, $origin) = @_;
		1970
		1971	cf::sync_job { find $path, $origin }
		1972	}
		1973
		1974	sub do_load_sync {
683	my ($map) = @_;	1975	my ($map) = @_;
684		1976
685	my $path = $map->tmpname;	1977	cf::sync_job { $map->load };
686	$path = $map->path unless defined $path;
687
688	open my $fh, "<:raw", "$path.cfperl"
689	or return; # no perl data
690
691	my $data = Storable::thaw do { local $/; <$fh> };
692
693	$data->{version} <= 1
694	or return; # too new
695
696	$map->_set_obs ($data->{obs});
697	};
698
699	attach_to_maps prio => -10000, package => cf::mapsupport::;
700
701	#############################################################################
702	# load/save perl data associated with player->ob objects
703
704	sub all_objects(@) {
705	@_, map all_objects ($_->inv), @_
706	}	1978	}
707		1979
708	attach_to_players	1980	our %MAP_PREFETCH;
709	on_load => sub {	1981	our $MAP_PREFETCHER = undef;
710	my ($pl, $path) = @_;
711		1982
712	for my $o (all_objects $pl->ob) {	1983	sub find_async {
713	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1984	my ($path, $origin) = @_;
714	$o->set_ob_key_value ("_perl_data");
715		1985
716	%$o = %{ Storable::thaw pack "H*", $value };	1986	$path = normalise $path, $origin && $origin->{path};
		1987
		1988	if (my $map = $cf::MAP{$path}) {
		1989	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1990	}
		1991
		1992	undef $MAP_PREFETCH{$path};
		1993	$MAP_PREFETCHER ||= cf::async {
		1994	while (%MAP_PREFETCH) {
		1995	for my $path (keys %MAP_PREFETCH) {
		1996	if (my $map = find $path) {
		1997	$map->load;
		1998	}
		1999
		2000	delete $MAP_PREFETCH{$path};
717	}	2001	}
718	}	2002	}
		2003	undef $MAP_PREFETCHER;
		2004	};
		2005	$MAP_PREFETCHER->prio (6);
		2006
		2007	()
		2008	}
		2009
		2010	sub save {
		2011	my ($self) = @_;
		2012
		2013	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2014
		2015	$self->{last_save} = $cf::RUNTIME;
		2016
		2017	return unless $self->dirty;
		2018
		2019	my $save = $self->save_path; utf8::encode $save;
		2020	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2021
		2022	$self->{load_path} = $save;
		2023
		2024	return if $self->{deny_save};
		2025
		2026	local $self->{last_access} = $self->last_access;#d#
		2027
		2028	cf::async {
		2029	$_->contr->save for $self->players;
		2030	};
		2031
		2032	if ($uniq) {
		2033	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2034	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2035	} else {
		2036	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
719	},	2037	}
720	;
721
722	#############################################################################
723	# core extensions - in perl
724
725	=item cf::player::exists $login
726
727	Returns true when the given account exists.
728
729	=cut
730
731	sub cf::player::exists($) {
732	cf::player::find $_[0]
733	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
734	}	2038	}
735		2039
		2040	sub swap_out {
		2041	my ($self) = @_;
		2042
		2043	# save first because save cedes
		2044	$self->save;
		2045
		2046	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2047
		2048	return if $self->players;
		2049	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2050	return if $self->{deny_save};
		2051
		2052	$self->clear;
		2053	$self->in_memory (cf::MAP_SWAPPED);
		2054	}
		2055
		2056	sub reset_at {
		2057	my ($self) = @_;
		2058
		2059	# TODO: safety, remove and allow resettable per-player maps
		2060	return 1e99 if $self->{deny_reset};
		2061
		2062	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2063	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2064
		2065	$time + $to
		2066	}
		2067
		2068	sub should_reset {
		2069	my ($self) = @_;
		2070
		2071	$self->reset_at <= $cf::RUNTIME
		2072	}
		2073
		2074	sub reset {
		2075	my ($self) = @_;
		2076
		2077	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2078
		2079	return if $self->players;
		2080
		2081	warn "resetting map ", $self->path;
		2082
		2083	$self->in_memory (cf::MAP_SWAPPED);
		2084
		2085	# need to save uniques path
		2086	unless ($self->{deny_save}) {
		2087	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2088
		2089	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2090	if $uniq;
		2091	}
		2092
		2093	delete $cf::MAP{$self->path};
		2094
		2095	$self->clear;
		2096
		2097	$_->clear_links_to ($self) for values %cf::MAP;
		2098
		2099	$self->unlink_save;
		2100	$self->destroy;
		2101	}
		2102
		2103	my $nuke_counter = "aaaa";
		2104
		2105	sub nuke {
		2106	my ($self) = @_;
		2107
		2108	delete $cf::MAP{$self->path};
		2109
		2110	$self->unlink_save;
		2111
		2112	bless $self, "cf::map";
		2113	delete $self->{deny_reset};
		2114	$self->{deny_save} = 1;
		2115	$self->reset_timeout (1);
		2116	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2117
		2118	$cf::MAP{$self->path} = $self;
		2119
		2120	$self->reset; # polite request, might not happen
		2121	}
		2122
		2123	=item $maps = cf::map::tmp_maps
		2124
		2125	Returns an arrayref with all map paths of currently instantiated and saved
		2126	maps. May block.
		2127
		2128	=cut
		2129
		2130	sub tmp_maps() {
		2131	[
		2132	map {
		2133	utf8::decode $_;
		2134	/\.map$/
		2135	? normalise $_
		2136	: ()
		2137	} @{ aio_readdir $TMPDIR or [] }
		2138	]
		2139	}
		2140
		2141	=item $maps = cf::map::random_maps
		2142
		2143	Returns an arrayref with all map paths of currently instantiated and saved
		2144	random maps. May block.
		2145
		2146	=cut
		2147
		2148	sub random_maps() {
		2149	[
		2150	map {
		2151	utf8::decode $_;
		2152	/\.map$/
		2153	? normalise "?random/$_"
		2154	: ()
		2155	} @{ aio_readdir $RANDOMDIR or [] }
		2156	]
		2157	}
		2158
		2159	=item cf::map::unique_maps
		2160
		2161	Returns an arrayref of paths of all shared maps that have
		2162	instantiated unique items. May block.
		2163
		2164	=cut
		2165
		2166	sub unique_maps() {
		2167	[
		2168	map {
		2169	utf8::decode $_;
		2170	/\.map$/
		2171	? normalise $_
		2172	: ()
		2173	} @{ aio_readdir $UNIQUEDIR or [] }
		2174	]
		2175	}
		2176
		2177	package cf;
		2178
		2179	=back
		2180
		2181	=head3 cf::object
		2182
		2183	=cut
		2184
		2185	package cf::object;
		2186
		2187	=over 4
		2188
		2189	=item $ob->inv_recursive
		2190
		2191	Returns the inventory of the object _and_ their inventories, recursively.
		2192
		2193	=cut
		2194
		2195	sub inv_recursive_;
		2196	sub inv_recursive_ {
		2197	map { $_, inv_recursive_ $_->inv } @_
		2198	}
		2199
		2200	sub inv_recursive {
		2201	inv_recursive_ inv $_[0]
		2202	}
		2203
		2204	package cf;
		2205
		2206	=back
		2207
		2208	=head3 cf::object::player
		2209
		2210	=over 4
		2211
736	=item $player->reply ($npc, $msg[, $flags])	2212	=item $player_object->reply ($npc, $msg[, $flags])
737		2213
738	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2214	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
739	can be C<undef>. Does the right thing when the player is currently in a	2215	can be C<undef>. Does the right thing when the player is currently in a
740	dialogue with the given NPC character.	2216	dialogue with the given NPC character.
741		2217
742	=cut	2218	=cut
743		2219
744	# rough implementation of a future "reply" method that works	2220	# rough implementation of a future "reply" method that works
745	# with dialog boxes.	2221	# with dialog boxes.
		2222	#TODO: the first argument must go, split into a $npc->reply_to ( method
746	sub cf::object::player::reply($$$;$) {	2223	sub cf::object::player::reply($$$;$) {
747	my ($self, $npc, $msg, $flags) = @_;	2224	my ($self, $npc, $msg, $flags) = @_;
748		2225
749	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2226	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
750		2227
751	if ($self->{record_replies}) {	2228	if ($self->{record_replies}) {
752	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2229	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2230
753	} else {	2231	} else {
		2232	my $pl = $self->contr;
		2233
		2234	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2235	my $dialog = $pl->{npc_dialog};
		2236	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2237
		2238	} else {
754	$msg = $npc->name . " says: $msg" if $npc;	2239	$msg = $npc->name . " says: $msg" if $npc;
755	$self->message ($msg, $flags);	2240	$self->message ($msg, $flags);
		2241	}
		2242	}
		2243	}
		2244
		2245	=item $player_object->may ("access")
		2246
		2247	Returns wether the given player is authorized to access resource "access"
		2248	(e.g. "command_wizcast").
		2249
		2250	=cut
		2251
		2252	sub cf::object::player::may {
		2253	my ($self, $access) = @_;
		2254
		2255	$self->flag (cf::FLAG_WIZ) ||
		2256	(ref $cf::CFG{"may_$access"}
		2257	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2258	: $cf::CFG{"may_$access"})
		2259	}
		2260
		2261	=item $player_object->enter_link
		2262
		2263	Freezes the player and moves him/her to a special map (C<{link}>).
		2264
		2265	The player should be reasonably safe there for short amounts of time. You
		2266	I<MUST> call C<leave_link> as soon as possible, though.
		2267
		2268	Will never block.
		2269
		2270	=item $player_object->leave_link ($map, $x, $y)
		2271
		2272	Moves the player out of the special C<{link}> map onto the specified
		2273	map. If the map is not valid (or omitted), the player will be moved back
		2274	to the location he/she was before the call to C<enter_link>, or, if that
		2275	fails, to the emergency map position.
		2276
		2277	Might block.
		2278
		2279	=cut
		2280
		2281	sub link_map {
		2282	unless ($LINK_MAP) {
		2283	$LINK_MAP = cf::map::find "{link}"
		2284	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2285	$LINK_MAP->load;
		2286	}
		2287
		2288	$LINK_MAP
		2289	}
		2290
		2291	sub cf::object::player::enter_link {
		2292	my ($self) = @_;
		2293
		2294	$self->deactivate_recursive;
		2295
		2296	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2297
		2298	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2299	if $self->map && $self->map->{path} ne "{link}";
		2300
		2301	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2302	}
		2303
		2304	sub cf::object::player::leave_link {
		2305	my ($self, $map, $x, $y) = @_;
		2306
		2307	return unless $self->contr->active;
		2308
		2309	my $link_pos = delete $self->{_link_pos};
		2310
		2311	unless ($map) {
		2312	# restore original map position
		2313	($map, $x, $y) = @{ $link_pos || [] };
		2314	$map = cf::map::find $map;
		2315
		2316	unless ($map) {
		2317	($map, $x, $y) = @$EMERGENCY_POSITION;
		2318	$map = cf::map::find $map
		2319	or die "FATAL: cannot load emergency map\n";
		2320	}
		2321	}
		2322
		2323	($x, $y) = (-1, -1)
		2324	unless (defined $x) && (defined $y);
		2325
		2326	# use -1 or undef as default coordinates, not 0, 0
		2327	($x, $y) = ($map->enter_x, $map->enter_y)
		2328	if $x <=0 && $y <= 0;
		2329
		2330	$map->load;
		2331	$map->load_diag;
		2332
		2333	return unless $self->contr->active;
		2334	$self->activate_recursive;
		2335
		2336	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2337	$self->enter_map ($map, $x, $y);
		2338	}
		2339
		2340	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2341
		2342	Moves the player to the given map-path and coordinates by first freezing
		2343	her, loading and preparing them map, calling the provided $check callback
		2344	that has to return the map if sucecssful, and then unfreezes the player on
		2345	the new (success) or old (failed) map position. In either case, $done will
		2346	be called at the end of this process.
		2347
		2348	=cut
		2349
		2350	our $GOTOGEN;
		2351
		2352	sub cf::object::player::goto {
		2353	my ($self, $path, $x, $y, $check, $done) = @_;
		2354
		2355	# do generation counting so two concurrent goto's will be executed in-order
		2356	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2357
		2358	$self->enter_link;
		2359
		2360	(async {
		2361	my $map = eval {
		2362	my $map = cf::map::find $path;
		2363
		2364	if ($map) {
		2365	$map = $map->customise_for ($self);
		2366	$map = $check->($map) if $check && $map;
		2367	} else {
		2368	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2369	}
		2370
		2371	$map
		2372	};
		2373
		2374	if ($@) {
		2375	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2376	LOG llevError | logBacktrace, Carp::longmess $@;
		2377	}
		2378
		2379	if ($gen == $self->{_goto_generation}) {
		2380	delete $self->{_goto_generation};
		2381	$self->leave_link ($map, $x, $y);
		2382	}
		2383
		2384	$done->() if $done;
		2385	})->prio (1);
		2386	}
		2387
		2388	=item $player_object->enter_exit ($exit_object)
		2389
		2390	=cut
		2391
		2392	sub parse_random_map_params {
		2393	my ($spec) = @_;
		2394
		2395	my $rmp = { # defaults
		2396	xsize => (cf::rndm 15, 40),
		2397	ysize => (cf::rndm 15, 40),
		2398	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2399	#layout => string,
756	}	2400	};
757	}
758		2401
759	=item $player->ext_reply ($msgid, $msgtype, %msg)	2402	for (split /\n/, $spec) {
		2403	my ($k, $v) = split /\s+/, $_, 2;
760		2404
		2405	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2406	}
		2407
		2408	$rmp
		2409	}
		2410
		2411	sub prepare_random_map {
		2412	my ($exit) = @_;
		2413
		2414	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2415
		2416	# all this does is basically replace the /! path by
		2417	# a new random map path (?random/...) with a seed
		2418	# that depends on the exit object
		2419
		2420	my $rmp = parse_random_map_params $exit->msg;
		2421
		2422	if ($exit->map) {
		2423	$rmp->{region} = $exit->region->name;
		2424	$rmp->{origin_map} = $exit->map->path;
		2425	$rmp->{origin_x} = $exit->x;
		2426	$rmp->{origin_y} = $exit->y;
		2427	}
		2428
		2429	$rmp->{random_seed} ||= $exit->random_seed;
		2430
		2431	my $data = cf::to_json $rmp;
		2432	my $md5 = Digest::MD5::md5_hex $data;
		2433	my $meta = "$RANDOMDIR/$md5.meta";
		2434
		2435	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2436	aio_write $fh, 0, (length $data), $data, 0;
		2437	undef $fh;
		2438	aio_rename "$meta~", $meta;
		2439
		2440	$exit->slaying ("?random/$md5");
		2441	$exit->msg (undef);
		2442	}
		2443	}
		2444
		2445	sub cf::object::player::enter_exit {
		2446	my ($self, $exit) = @_;
		2447
		2448	return unless $self->type == cf::PLAYER;
		2449
		2450	if ($exit->slaying eq "/!") {
		2451	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2452	# the problem is that $exit might not survive long enough
		2453	# so it needs to be done right now, right here
		2454	cf::sync_job { prepare_random_map $exit };
		2455	}
		2456
		2457	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2458	my $hp = $exit->stats->hp;
		2459	my $sp = $exit->stats->sp;
		2460
		2461	$self->enter_link;
		2462
		2463	# if exit is damned, update players death & WoR home-position
		2464	$self->contr->savebed ($slaying, $hp, $sp)
		2465	if $exit->flag (FLAG_DAMNED);
		2466
		2467	(async {
		2468	$self->deactivate_recursive; # just to be sure
		2469	unless (eval {
		2470	$self->goto ($slaying, $hp, $sp);
		2471
		2472	1;
		2473	}) {
		2474	$self->message ("Something went wrong deep within the crossfire server. "
		2475	. "I'll try to bring you back to the map you were before. "
		2476	. "Please report this to the dungeon master!",
		2477	cf::NDI_UNIQUE | cf::NDI_RED);
		2478
		2479	warn "ERROR in enter_exit: $@";
		2480	$self->leave_link;
		2481	}
		2482	})->prio (1);
		2483	}
		2484
		2485	=head3 cf::client
		2486
		2487	=over 4
		2488
		2489	=item $client->send_drawinfo ($text, $flags)
		2490
		2491	Sends a drawinfo packet to the client. Circumvents output buffering so
		2492	should not be used under normal circumstances.
		2493
		2494	=cut
		2495
		2496	sub cf::client::send_drawinfo {
		2497	my ($self, $text, $flags) = @_;
		2498
		2499	utf8::encode $text;
		2500	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2501	}
		2502
		2503	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2504
		2505	Send a drawinfo or msg packet to the client, formatting the msg for the
		2506	client if neccessary. C<$type> should be a string identifying the type of
		2507	the message, with C<log> being the default. If C<$color> is negative, suppress
		2508	the message unless the client supports the msg packet.
		2509
		2510	=cut
		2511
		2512	sub cf::client::send_msg {
		2513	my ($self, $channel, $msg, $color, @extra) = @_;
		2514
		2515	$msg = $self->pl->expand_cfpod ($msg);
		2516
		2517	$color &= ~cf::NDI_UNIQUE; # just in case...
		2518
		2519	if (ref $channel) {
		2520	# send meta info to client, if not yet sent
		2521	unless (exists $self->{channel}{$channel->{id}}) {
		2522	$self->{channel}{$channel->{id}} = $channel;
		2523	$self->ext_msg (channel_info => %$channel);
		2524	}
		2525
		2526	$channel = $channel->{id};
		2527	}
		2528
		2529	return unless @extra || length $msg;
		2530
		2531	if ($self->can_msg) {
		2532	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2533	} else {
		2534	# replace some tags by gcfclient-compatible ones
		2535	for ($msg) {
		2536	1 while
		2537	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2538	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2539	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2540	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2541	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2542	}
		2543
		2544	if ($color >= 0) {
		2545	if (0 && $msg =~ /\[/) {
		2546	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2547	} else {
		2548	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2549	$self->send_packet ("drawinfo $color $msg")
		2550	}
		2551	}
		2552	}
		2553	}
		2554
		2555	=item $client->ext_msg ($type, @msg)
		2556
761	Sends an ext reply to the player.	2557	Sends an ext event to the client.
762		2558
763	=cut	2559	=cut
764		2560
765	sub cf::player::ext_reply($$$%) {	2561	sub cf::client::ext_msg($$@) {
766	my ($self, $id, %msg) = @_;	2562	my ($self, $type, @msg) = @_;
767		2563
768	$msg{msgid} = $id;	2564	my $extcmd = $self->extcmd;
769		2565
770	$self->send ("ext " . to_json \%msg);	2566	if ($extcmd == 2) {
		2567	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2568	} elsif ($extcmd == 1) { # TODO: remove
		2569	push @msg, msgtype => "event_$type";
		2570	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2571	}
771	}	2572	}
772		2573
773	#############################################################################	2574	=item $success = $client->query ($flags, "text", \&cb)
774	# map scripting support	2575
		2576	Queues a query to the client, calling the given callback with
		2577	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2578	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2579
		2580	Queries can fail, so check the return code. Or don't, as queries will
		2581	become reliable at some point in the future.
		2582
		2583	=cut
		2584
		2585	sub cf::client::query {
		2586	my ($self, $flags, $text, $cb) = @_;
		2587
		2588	return unless $self->state == ST_PLAYING
		2589	|| $self->state == ST_SETUP
		2590	|| $self->state == ST_CUSTOM;
		2591
		2592	$self->state (ST_CUSTOM);
		2593
		2594	utf8::encode $text;
		2595	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2596
		2597	$self->send_packet ($self->{query_queue}[0][0])
		2598	if @{ $self->{query_queue} } == 1;
		2599
		2600	1
		2601	}
		2602
		2603	cf::client->attach (
		2604	on_connect => sub {
		2605	my ($ns) = @_;
		2606
		2607	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2608	},
		2609	on_reply => sub {
		2610	my ($ns, $msg) = @_;
		2611
		2612	# this weird shuffling is so that direct followup queries
		2613	# get handled first
		2614	my $queue = delete $ns->{query_queue}
		2615	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2616
		2617	(shift @$queue)->[1]->($msg);
		2618	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2619
		2620	push @{ $ns->{query_queue} }, @$queue;
		2621
		2622	if (@{ $ns->{query_queue} } == @$queue) {
		2623	if (@$queue) {
		2624	$ns->send_packet ($ns->{query_queue}[0][0]);
		2625	} else {
		2626	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2627	}
		2628	}
		2629	},
		2630	on_exticmd => sub {
		2631	my ($ns, $buf) = @_;
		2632
		2633	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2634
		2635	if (ref $msg) {
		2636	my ($type, $reply, @payload) =
		2637	"ARRAY" eq ref $msg
		2638	? @$msg
		2639	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2640
		2641	if (my $cb = $EXTICMD{$type}) {
		2642	my @reply = $cb->($ns, @payload);
		2643
		2644	$ns->ext_reply ($reply, @reply)
		2645	if $reply;
		2646	}
		2647	} else {
		2648	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2649	}
		2650
		2651	cf::override;
		2652	},
		2653	);
		2654
		2655	=item $client->async (\&cb)
		2656
		2657	Create a new coroutine, running the specified callback. The coroutine will
		2658	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2659	or loss of connection).
		2660
		2661	=cut
		2662
		2663	sub cf::client::async {
		2664	my ($self, $cb) = @_;
		2665
		2666	my $coro = &Coro::async ($cb);
		2667
		2668	$coro->on_destroy (sub {
		2669	delete $self->{_coro}{$coro+0};
		2670	});
		2671
		2672	$self->{_coro}{$coro+0} = $coro;
		2673
		2674	$coro
		2675	}
		2676
		2677	cf::client->attach (
		2678	on_destroy => sub {
		2679	my ($ns) = @_;
		2680
		2681	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2682	},
		2683	);
		2684
		2685	=back
		2686
		2687
		2688	=head2 SAFE SCRIPTING
		2689
		2690	Functions that provide a safe environment to compile and execute
		2691	snippets of perl code without them endangering the safety of the server
		2692	itself. Looping constructs, I/O operators and other built-in functionality
		2693	is not available in the safe scripting environment, and the number of
		2694	functions and methods that can be called is greatly reduced.
		2695
		2696	=cut
775		2697
776	our $safe = new Safe "safe";	2698	our $safe = new Safe "safe";
777	our $safe_hole = new Safe::Hole;	2699	our $safe_hole = new Safe::Hole;
778		2700
779	$SIG{FPE} = 'IGNORE';	2701	$SIG{FPE} = 'IGNORE';
780		2702
781	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2703	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
782		2704
783	# here we export the classes and methods available to script code	2705	# here we export the classes and methods available to script code
784		2706
		2707	=pod
		2708
		2709	The following functions and methods are available within a safe environment:
		2710
		2711	cf::object
		2712	contr pay_amount pay_player map x y force_find force_add
		2713	insert remove
		2714
		2715	cf::object::player
		2716	player
		2717
		2718	cf::player
		2719	peaceful
		2720
		2721	cf::map
		2722	trigger
		2723
		2724	=cut
		2725
785	for (	2726	for (
786	["cf::object" => qw(contr pay_amount pay_player)],	2727	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2728	insert remove)],
787	["cf::object::player" => qw(player)],	2729	["cf::object::player" => qw(player)],
788	["cf::player" => qw(peaceful)],	2730	["cf::player" => qw(peaceful)],
		2731	["cf::map" => qw(trigger)],
789	) {	2732	) {
790	no strict 'refs';	2733	no strict 'refs';
791	my ($pkg, @funs) = @$_;	2734	my ($pkg, @funs) = @$_;
792	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2735	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
793	for @funs;	2736	for @funs;
794	}	2737	}
		2738
		2739	=over 4
		2740
		2741	=item @retval = safe_eval $code, [var => value, ...]
		2742
		2743	Compiled and executes the given perl code snippet. additional var/value
		2744	pairs result in temporary local (my) scalar variables of the given name
		2745	that are available in the code snippet. Example:
		2746
		2747	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2748
		2749	=cut
795		2750
796	sub safe_eval($;@) {	2751	sub safe_eval($;@) {
797	my ($code, %vars) = @_;	2752	my ($code, %vars) = @_;
798		2753
799	my $qcode = $code;	2754	my $qcode = $code;
…		…
822	}	2777	}
823		2778
824	wantarray ? @res : $res[0]	2779	wantarray ? @res : $res[0]
825	}	2780	}
826		2781
		2782	=item cf::register_script_function $function => $cb
		2783
		2784	Register a function that can be called from within map/npc scripts. The
		2785	function should be reasonably secure and should be put into a package name
		2786	like the extension.
		2787
		2788	Example: register a function that gets called whenever a map script calls
		2789	C<rent::overview>, as used by the C<rent> extension.
		2790
		2791	cf::register_script_function "rent::overview" => sub {
		2792	...
		2793	};
		2794
		2795	=cut
		2796
827	sub register_script_function {	2797	sub register_script_function {
828	my ($fun, $cb) = @_;	2798	my ($fun, $cb) = @_;
829		2799
830	no strict 'refs';	2800	no strict 'refs';
831	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2801	*{"safe::$fun"} = $safe_hole->wrap ($cb);
832	}	2802	}
833		2803
		2804	=back
		2805
		2806	=cut
		2807
834	#############################################################################	2808	#############################################################################
835	# the server's main()	2809	# the server's init and main functions
		2810
		2811	sub load_facedata($) {
		2812	my ($path) = @_;
		2813
		2814	warn "loading facedata from $path\n";
		2815
		2816	my $facedata;
		2817	0 < aio_load $path, $facedata
		2818	or die "$path: $!";
		2819
		2820	$facedata = Coro::Storable::thaw $facedata;
		2821
		2822	$facedata->{version} == 2
		2823	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2824
		2825	{
		2826	my $faces = $facedata->{faceinfo};
		2827
		2828	while (my ($face, $info) = each %$faces) {
		2829	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2830	cf::face::set_visibility $idx, $info->{visibility};
		2831	cf::face::set_magicmap $idx, $info->{magicmap};
		2832	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2833	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2834
		2835	cf::cede_to_tick;
		2836	}
		2837
		2838	while (my ($face, $info) = each %$faces) {
		2839	next unless $info->{smooth};
		2840	my $idx = cf::face::find $face
		2841	or next;
		2842	if (my $smooth = cf::face::find $info->{smooth}) {
		2843	cf::face::set_smooth $idx, $smooth;
		2844	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2845	} else {
		2846	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2847	}
		2848
		2849	cf::cede_to_tick;
		2850	}
		2851	}
		2852
		2853	{
		2854	my $anims = $facedata->{animinfo};
		2855
		2856	while (my ($anim, $info) = each %$anims) {
		2857	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2858	cf::cede_to_tick;
		2859	}
		2860
		2861	cf::anim::invalidate_all; # d'oh
		2862	}
		2863
		2864	{
		2865	# TODO: for gcfclient pleasure, we should give resources
		2866	# that gcfclient doesn't grok a >10000 face index.
		2867	my $res = $facedata->{resource};
		2868	my $enc = JSON::XS->new->utf8->canonical;
		2869
		2870	while (my ($name, $info) = each %$res) {
		2871	my $meta = $enc->encode ({
		2872	name => $name,
		2873	type => $info->{type},
		2874	copyright => $info->{copyright}, #TODO#
		2875	});
		2876
		2877	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2878
		2879	if ($name =~ /\.(?:jpg|png)$/) {
		2880	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2881	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2882	} else {
		2883	my $data = pack "(w/a*)*", $meta, $info->{data};
		2884	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2885
		2886	cf::face::set_type $idx, 1;
		2887	cf::face::set_data $idx, 0, $data, $chk;
		2888	}
		2889
		2890	cf::cede_to_tick;
		2891	}
		2892	}
		2893
		2894	1
		2895	}
		2896
		2897	sub reload_regions {
		2898	load_resource_file "$MAPDIR/regions"
		2899	or die "unable to load regions file\n";
		2900
		2901	for (cf::region::list) {
		2902	$_->{match} = qr/$_->{match}/
		2903	if exists $_->{match};
		2904	}
		2905	}
		2906
		2907	sub reload_facedata {
		2908	load_facedata "$DATADIR/facedata"
		2909	or die "unable to load facedata\n";
		2910	}
		2911
		2912	sub reload_archetypes {
		2913	load_resource_file "$DATADIR/archetypes"
		2914	or die "unable to load archetypes\n";
		2915	#d# NEED to laod twice to resolve forward references
		2916	# this really needs to be done in an extra post-pass
		2917	# (which needs to be synchronous, so solve it differently)
		2918	load_resource_file "$DATADIR/archetypes"
		2919	or die "unable to load archetypes\n";
		2920	}
		2921
		2922	sub reload_treasures {
		2923	load_resource_file "$DATADIR/treasures"
		2924	or die "unable to load treasurelists\n";
		2925	}
		2926
		2927	sub reload_resources {
		2928	warn "reloading resource files...\n";
		2929
		2930	reload_regions;
		2931	reload_facedata;
		2932	#reload_archetypes;#d#
		2933	reload_archetypes;
		2934	reload_treasures;
		2935
		2936	warn "finished reloading resource files\n";
		2937	}
		2938
		2939	sub init {
		2940	reload_resources;
		2941	}
		2942
		2943	sub cfg_load {
		2944	open my $fh, "<:utf8", "$CONFDIR/config"
		2945	or return;
		2946
		2947	local $/;
		2948	*CFG = YAML::Syck::Load <$fh>;
		2949
		2950	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2951
		2952	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2953	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2954
		2955	if (exists $CFG{mlockall}) {
		2956	eval {
		2957	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2958	and die "WARNING: m(un)lockall failed: $!\n";
		2959	};
		2960	warn $@ if $@;
		2961	}
		2962	}
836		2963
837	sub main {	2964	sub main {
		2965	# we must not ever block the main coroutine
		2966	local $Coro::idle = sub {
		2967	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2968	(async {
		2969	Event::one_event;
		2970	})->prio (Coro::PRIO_MAX);
		2971	};
		2972
		2973	cfg_load;
		2974	db_init;
		2975	load_extensions;
		2976
		2977	$TICK_WATCHER->start;
838	Event::loop;	2978	Event::loop;
839	}	2979	}
840		2980
841	#############################################################################	2981	#############################################################################
842	# initialisation	2982	# initialisation and cleanup
843		2983
844	register "<global>", __PACKAGE__;	2984	# install some emergency cleanup handlers
		2985	BEGIN {
		2986	for my $signal (qw(INT HUP TERM)) {
		2987	Event->signal (
		2988	reentrant => 0,
		2989	data => WF_AUTOCANCEL,
		2990	signal => $signal,
		2991	prio => 0,
		2992	cb => sub {
		2993	cf::cleanup "SIG$signal";
		2994	},
		2995	);
		2996	}
		2997	}
		2998
		2999	sub write_runtime {
		3000	my $runtime = "$LOCALDIR/runtime";
		3001
		3002	# first touch the runtime file to show we are still running:
		3003	# the fsync below can take a very very long time.
		3004
		3005	IO::AIO::aio_utime $runtime, undef, undef;
		3006
		3007	my $guard = cf::lock_acquire "write_runtime";
		3008
		3009	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3010	or return;
		3011
		3012	my $value = $cf::RUNTIME + 90 + 10;
		3013	# 10 is the runtime save interval, for a monotonic clock
		3014	# 60 allows for the watchdog to kill the server.
		3015
		3016	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3017	and return;
		3018
		3019	# always fsync - this file is important
		3020	aio_fsync $fh
		3021	and return;
		3022
		3023	# touch it again to show we are up-to-date
		3024	aio_utime $fh, undef, undef;
		3025
		3026	close $fh
		3027	or return;
		3028
		3029	aio_rename "$runtime~", $runtime
		3030	and return;
		3031
		3032	warn "runtime file written.\n";
		3033
		3034	1
		3035	}
		3036
		3037	sub emergency_save() {
		3038	my $freeze_guard = cf::freeze_mainloop;
		3039
		3040	warn "enter emergency perl save\n";
		3041
		3042	cf::sync_job {
		3043	# use a peculiar iteration method to avoid tripping on perl
		3044	# refcount bugs in for. also avoids problems with players
		3045	# and maps saved/destroyed asynchronously.
		3046	warn "begin emergency player save\n";
		3047	for my $login (keys %cf::PLAYER) {
		3048	my $pl = $cf::PLAYER{$login} or next;
		3049	$pl->valid or next;
		3050	$pl->save;
		3051	}
		3052	warn "end emergency player save\n";
		3053
		3054	warn "begin emergency map save\n";
		3055	for my $path (keys %cf::MAP) {
		3056	my $map = $cf::MAP{$path} or next;
		3057	$map->valid or next;
		3058	$map->save;
		3059	}
		3060	warn "end emergency map save\n";
		3061
		3062	warn "begin emergency database checkpoint\n";
		3063	BDB::db_env_txn_checkpoint $DB_ENV;
		3064	warn "end emergency database checkpoint\n";
		3065	};
		3066
		3067	warn "leave emergency perl save\n";
		3068	}
		3069
		3070	sub post_cleanup {
		3071	my ($make_core) = @_;
		3072
		3073	warn Carp::longmess "post_cleanup backtrace"
		3074	if $make_core;
		3075	}
		3076
		3077	sub do_reload_perl() {
		3078	# can/must only be called in main
		3079	if ($Coro::current != $Coro::main) {
		3080	warn "can only reload from main coroutine";
		3081	return;
		3082	}
		3083
		3084	warn "reloading...";
		3085
		3086	warn "entering sync_job";
		3087
		3088	cf::sync_job {
		3089	cf::write_runtime; # external watchdog should not bark
		3090	cf::emergency_save;
		3091	cf::write_runtime; # external watchdog should not bark
		3092
		3093	warn "syncing database to disk";
		3094	BDB::db_env_txn_checkpoint $DB_ENV;
		3095
		3096	# if anything goes wrong in here, we should simply crash as we already saved
		3097
		3098	warn "cancelling all WF_AUTOCANCEL watchers";
		3099	for (Event::all_watchers) {
		3100	$_->cancel if $_->data & WF_AUTOCANCEL;
		3101	}
		3102
		3103	warn "flushing outstanding aio requests";
		3104	for (;;) {
		3105	BDB::flush;
		3106	IO::AIO::flush;
		3107	Coro::cede;
		3108	last unless IO::AIO::nreqs || BDB::nreqs;
		3109	warn "iterate...";
		3110	}
		3111
		3112	++$RELOAD;
		3113
		3114	warn "cancelling all extension coros";
		3115	$_->cancel for values %EXT_CORO;
		3116	%EXT_CORO = ();
		3117
		3118	warn "removing commands";
		3119	%COMMAND = ();
		3120
		3121	warn "removing ext/exti commands";
		3122	%EXTCMD = ();
		3123	%EXTICMD = ();
		3124
		3125	warn "unloading/nuking all extensions";
		3126	for my $pkg (@EXTS) {
		3127	warn "... unloading $pkg";
		3128
		3129	if (my $cb = $pkg->can ("unload")) {
		3130	eval {
		3131	$cb->($pkg);
		3132	1
		3133	} or warn "$pkg unloaded, but with errors: $@";
		3134	}
		3135
		3136	warn "... nuking $pkg";
		3137	Symbol::delete_package $pkg;
		3138	}
		3139
		3140	warn "unloading all perl modules loaded from $LIBDIR";
		3141	while (my ($k, $v) = each %INC) {
		3142	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3143
		3144	warn "... unloading $k";
		3145	delete $INC{$k};
		3146
		3147	$k =~ s/\.pm$//;
		3148	$k =~ s/\//::/g;
		3149
		3150	if (my $cb = $k->can ("unload_module")) {
		3151	$cb->();
		3152	}
		3153
		3154	Symbol::delete_package $k;
		3155	}
		3156
		3157	warn "getting rid of safe::, as good as possible";
		3158	Symbol::delete_package "safe::$_"
		3159	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3160
		3161	warn "unloading cf.pm \"a bit\"";
		3162	delete $INC{"cf.pm"};
		3163	delete $INC{"cf/pod.pm"};
		3164
		3165	# don't, removes xs symbols, too,
		3166	# and global variables created in xs
		3167	#Symbol::delete_package __PACKAGE__;
		3168
		3169	warn "unload completed, starting to reload now";
		3170
		3171	warn "reloading cf.pm";
		3172	require cf;
		3173	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3174
		3175	warn "loading config and database again";
		3176	cf::cfg_load;
		3177
		3178	warn "loading extensions";
		3179	cf::load_extensions;
		3180
		3181	warn "reattaching attachments to objects/players";
		3182	_global_reattach; # objects, sockets
		3183	warn "reattaching attachments to maps";
		3184	reattach $_ for values %MAP;
		3185	warn "reattaching attachments to players";
		3186	reattach $_ for values %PLAYER;
		3187
		3188	warn "leaving sync_job";
		3189
		3190	1
		3191	} or do {
		3192	warn $@;
		3193	warn "error while reloading, exiting.";
		3194	exit 1;
		3195	};
		3196
		3197	warn "reloaded";
		3198	};
		3199
		3200	our $RELOAD_WATCHER; # used only during reload
		3201
		3202	sub reload_perl() {
		3203	# doing reload synchronously and two reloads happen back-to-back,
		3204	# coro crashes during coro_state_free->destroy here.
		3205
		3206	$RELOAD_WATCHER ||= Event->timer (
		3207	reentrant => 0,
		3208	after => 0,
		3209	data => WF_AUTOCANCEL,
		3210	cb => sub {
		3211	do_reload_perl;
		3212	undef $RELOAD_WATCHER;
		3213	},
		3214	);
		3215	}
		3216
		3217	register_command "reload" => sub {
		3218	my ($who, $arg) = @_;
		3219
		3220	if ($who->flag (FLAG_WIZ)) {
		3221	$who->message ("reloading server.");
		3222	async { reload_perl };
		3223	}
		3224	};
845		3225
846	unshift @INC, $LIBDIR;	3226	unshift @INC, $LIBDIR;
847		3227
848	load_extensions;	3228	my $bug_warning = 0;
849		3229
		3230	our @WAIT_FOR_TICK;
		3231	our @WAIT_FOR_TICK_BEGIN;
		3232
		3233	sub wait_for_tick {
		3234	return unless $TICK_WATCHER->is_active;
		3235	return if $Coro::current == $Coro::main;
		3236
		3237	my $signal = new Coro::Signal;
		3238	push @WAIT_FOR_TICK, $signal;
		3239	$signal->wait;
		3240	}
		3241
		3242	sub wait_for_tick_begin {
		3243	return unless $TICK_WATCHER->is_active;
		3244	return if $Coro::current == $Coro::main;
		3245
		3246	my $signal = new Coro::Signal;
		3247	push @WAIT_FOR_TICK_BEGIN, $signal;
		3248	$signal->wait;
		3249	}
		3250
		3251	my $min = 1e6;#d#
		3252	my $avg = 10;
850	$TICK_WATCHER = Event->timer (	3253	$TICK_WATCHER = Event->timer (
		3254	reentrant => 0,
		3255	parked => 1,
851	prio => 1,	3256	prio => 0,
852	at => $NEXT_TICK || 1,	3257	at => $NEXT_TICK || $TICK,
		3258	data => WF_AUTOCANCEL,
853	cb => sub {	3259	cb => sub {
		3260	if ($Coro::current != $Coro::main) {
		3261	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3262	unless ++$bug_warning > 10;
		3263	return;
		3264	}
		3265
		3266	$NOW = $tick_start = Event::time;
		3267
854	cf::server_tick; # one server iteration	3268	cf::server_tick; # one server iteration
855		3269
		3270	0 && sync_job {#d#
		3271	for(1..10) {
856	my $NOW = Event::time;	3272	my $t = Event::time;
		3273	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3274	or die;
		3275
		3276	$map->width (50);
		3277	$map->height (50);
		3278	$map->alloc;
		3279	$map->_load_objects ("/tmp/x.map", 1);
		3280	my $t = Event::time - $t;
		3281
		3282	#next unless $t < 0.0013;#d#
		3283	if ($t < $min) {
		3284	$min = $t;
		3285	}
		3286	$avg = $avg * 0.99 + $t * 0.01;
		3287	}
		3288	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3289	exit 0;
		3290	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3291	};
		3292
		3293	$RUNTIME += $TICK;
857	$NEXT_TICK += $TICK;	3294	$NEXT_TICK += $TICK;
858		3295
		3296	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3297	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3298	Coro::async_pool {
		3299	write_runtime
		3300	or warn "ERROR: unable to write runtime file: $!";
		3301	};
		3302	}
		3303
		3304	# my $AFTER = Event::time;
		3305	# warn $AFTER - $NOW;#d#
		3306
		3307	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3308	$sig->send;
		3309	}
		3310	while (my $sig = shift @WAIT_FOR_TICK) {
		3311	$sig->send;
		3312	}
		3313
		3314	$NOW = Event::time;
		3315
859	# if we are delayed by four ticks, skip them all	3316	# if we are delayed by four ticks or more, skip them all
860	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3317	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
861		3318
862	$TICK_WATCHER->at ($NEXT_TICK);	3319	$TICK_WATCHER->at ($NEXT_TICK);
863	$TICK_WATCHER->start;	3320	$TICK_WATCHER->start;
		3321
		3322	$LOAD = ($NOW - $tick_start) / $TICK;
		3323	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3324
		3325	_post_tick;
		3326
		3327
864	},	3328	},
865	);	3329	);
866		3330
867	_reload_2;	3331	{
		3332	BDB::max_poll_time $TICK * 0.1;
		3333	$BDB_POLL_WATCHER = Event->io (
		3334	reentrant => 0,
		3335	fd => BDB::poll_fileno,
		3336	poll => 'r',
		3337	prio => 0,
		3338	data => WF_AUTOCANCEL,
		3339	cb => \&BDB::poll_cb,
		3340	);
		3341	BDB::min_parallel 8;
		3342
		3343	BDB::set_sync_prepare {
		3344	my $status;
		3345	my $current = $Coro::current;
		3346	(
		3347	sub {
		3348	$status = $!;
		3349	$current->ready; undef $current;
		3350	},
		3351	sub {
		3352	Coro::schedule while defined $current;
		3353	$! = $status;
		3354	},
		3355	)
		3356	};
		3357
		3358	unless ($DB_ENV) {
		3359	$DB_ENV = BDB::db_env_create;
		3360
		3361	cf::sync_job {
		3362	eval {
		3363	BDB::db_env_open
		3364	$DB_ENV,
		3365	$BDBDIR,
		3366	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3367	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3368	0666;
		3369
		3370	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3371
		3372	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3373	$DB_ENV->set_lk_detect;
		3374	};
		3375
		3376	cf::cleanup "db_env_open(db): $@" if $@;
		3377	};
		3378	}
		3379	}
		3380
		3381	{
		3382	IO::AIO::min_parallel 8;
		3383
		3384	undef $Coro::AIO::WATCHER;
		3385	IO::AIO::max_poll_time $TICK * 0.1;
		3386	$AIO_POLL_WATCHER = Event->io (
		3387	reentrant => 0,
		3388	data => WF_AUTOCANCEL,
		3389	fd => IO::AIO::poll_fileno,
		3390	poll => 'r',
		3391	prio => 6,
		3392	cb => \&IO::AIO::poll_cb,
		3393	);
		3394	}
		3395
		3396	my $_log_backtrace;
		3397
		3398	sub _log_backtrace {
		3399	my ($msg, @addr) = @_;
		3400
		3401	$msg =~ s/\n//;
		3402
		3403	# limit the # of concurrent backtraces
		3404	if ($_log_backtrace < 2) {
		3405	++$_log_backtrace;
		3406	async {
		3407	my @bt = fork_call {
		3408	@addr = map { sprintf "%x", $_ } @addr;
		3409	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3410	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3411	or die "addr2line: $!";
		3412
		3413	my @funcs;
		3414	my @res = <$fh>;
		3415	chomp for @res;
		3416	while (@res) {
		3417	my ($func, $line) = splice @res, 0, 2, ();
		3418	push @funcs, "[$func] $line";
		3419	}
		3420
		3421	@funcs
		3422	};
		3423
		3424	LOG llevInfo, "[ABT] $msg\n";
		3425	LOG llevInfo, "[ABT] $_\n" for @bt;
		3426	--$_log_backtrace;
		3427	};
		3428	} else {
		3429	LOG llevInfo, "[ABT] $msg\n";
		3430	LOG llevInfo, "[ABT] [suppressed]\n";
		3431	}
		3432	}
		3433
		3434	# load additional modules
		3435	use cf::pod;
		3436
		3437	END { cf::emergency_save }
868		3438
869	1	3439	1
870		3440

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