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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.303 by root, Wed Jul 11 15:57:31 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;
10	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
11	use Time::HiRes;	32	use Time::HiRes;
12	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
13	$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
14		43
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	45	$YAML::Syck::ImplicitUnicode = 1;
17		46
18	use strict;	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		48
20	_init_vars;	49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		50
22	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
23	our @EVENT;	61	our @EVENT;
24	our $LIBDIR = maps_directory "perl";
25		62
26	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(!)
27	our $TICK_WATCHER;	76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	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;
29		85
30	our %CFG;	86	our %CFG;
31		87
32	our $uptime;	88	our $UPTIME; $UPTIME ||= time;
		89	our $RUNTIME;
33		90
34	$uptime ||= time;	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;
35		118
36	#############################################################################	119	#############################################################################
37		120
38	=head2 GLOBAL VARIABLES	121	=head2 GLOBAL VARIABLES
39		122
40	=over 4	123	=over 4
41		124
42	=item $cf::LIBDIR	125	=item $cf::UPTIME
43		126
44	The perl library directory, where extensions and cf-specific modules can	127	The timestamp of the server start (so not actually an uptime).
45	be found. It will be added to C<@INC> automatically.	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.
46		146
47	=item $cf::TICK	147	=item $cf::TICK
48		148
49	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
50		160
51	=item %cf::CFG	161	=item %cf::CFG
52		162
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
54	from wherever your confdir points to.	164	from wherever your confdir points to.
		165
		166	=item cf::wait_for_tick, cf::wait_for_tick_begin
		167
		168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		169	returns directly I<after> the tick processing (and consequently, can only wake one process
		170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
55		171
56	=back	172	=back
57		173
58	=cut	174	=cut
59		175
60	BEGIN {	176	BEGIN {
61	*CORE::GLOBAL::warn = sub {	177	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	178	my $msg = join "", @_;
		179
63	$msg .= "\n"	180	$msg .= "\n"
64	unless $msg =~ /\n$/;	181	unless $msg =~ /\n$/;
65		182
66	print STDERR "cfperl: $msg";	183	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		184
		185	utf8::encode $msg;
67	LOG llevError, "cfperl: $msg";	186	LOG llevError, $msg;
68	};	187	};
69	}	188	}
70		189
		190	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		191	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		192	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		193	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		194	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		195	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	196	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
72		197
73	# we bless all objects into (empty) derived classes to force a method lookup	198	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	199	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	200	for my $pkg (qw(
		201	cf::global cf::attachable
		202	cf::object cf::object::player
		203	cf::client cf::player
		204	cf::arch cf::living
		205	cf::map cf::party cf::region
		206	)) {
76	no strict 'refs';	207	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	208	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	209	}
79		210
80	$Event::DIED = sub {	211	$Event::DIED = sub {
81	warn "error in event callback: @_";	212	warn "error in event callback: @_";
82	};	213	};
83		214
84	my %ext_pkg;	215	#############################################################################
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		216
90	=head2 UTILITY FUNCTIONS	217	=head2 UTILITY FUNCTIONS
91		218
92	=over 4	219	=over 4
93		220
94	=cut	221	=item dumpval $ref
95		222
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	223	=cut
		224
		225	sub dumpval {
		226	eval {
		227	local $SIG{__DIE__};
		228	my $d;
		229	if (1) {
		230	$d = new Data::Dumper([$_[0]], ["*var"]);
		231	$d->Terse(1);
		232	$d->Indent(2);
		233	$d->Quotekeys(0);
		234	$d->Useqq(1);
		235	#$d->Bless(...);
		236	$d->Seen($_[1]) if @_ > 1;
		237	$d = $d->Dump();
		238	}
		239	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		240	$d
		241	} || "[unable to dump $_[0]: '$@']";
		242	}
97		243
98	=item $ref = cf::from_json $json	244	=item $ref = cf::from_json $json
99		245
100	Converts a JSON string into the corresponding perl data structure.	246	Converts a JSON string into the corresponding perl data structure.
101		247
102	=cut
103
104	sub from_json($) {
105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
106	JSON::Syck::Load $_[0]
107	}
108
109	=item $json = cf::to_json $ref	248	=item $json = cf::to_json $ref
110		249
111	Converts a perl data structure into its JSON representation.	250	Converts a perl data structure into its JSON representation.
112		251
113	=cut	252	=cut
114		253
115	sub to_json($) {	254	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	255
117	JSON::Syck::Dump $_[0]	256	sub to_json ($) { $json_coder->encode ($_[0]) }
		257	sub from_json ($) { $json_coder->decode ($_[0]) }
		258
		259	=item cf::lock_wait $string
		260
		261	Wait until the given lock is available. See cf::lock_acquire.
		262
		263	=item my $lock = cf::lock_acquire $string
		264
		265	Wait until the given lock is available and then acquires it and returns
		266	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		267	for example when the coroutine gets canceled), the lock is automatically
		268	returned.
		269
		270	Lock names should begin with a unique identifier (for example, cf::map::find
		271	uses map_find and cf::map::load uses map_load).
		272
		273	=item $locked = cf::lock_active $string
		274
		275	Return true if the lock is currently active, i.e. somebody has locked it.
		276
		277	=cut
		278
		279	our %LOCK;
		280
		281	sub lock_wait($) {
		282	my ($key) = @_;
		283
		284	# wait for lock, if any
		285	while ($LOCK{$key}) {
		286	push @{ $LOCK{$key} }, $Coro::current;
		287	Coro::schedule;
		288	}
		289	}
		290
		291	sub lock_acquire($) {
		292	my ($key) = @_;
		293
		294	# wait, to be sure we are not locked
		295	lock_wait $key;
		296
		297	$LOCK{$key} = [];
		298
		299	Coro::guard {
		300	# wake up all waiters, to be on the safe side
		301	$_->ready for @{ delete $LOCK{$key} };
		302	}
		303	}
		304
		305	sub lock_active($) {
		306	my ($key) = @_;
		307
		308	! ! $LOCK{$key}
		309	}
		310
		311	sub freeze_mainloop {
		312	return unless $TICK_WATCHER->is_active;
		313
		314	my $guard = Coro::guard {
		315	$TICK_WATCHER->start;
		316	};
		317	$TICK_WATCHER->stop;
		318	$guard
		319	}
		320
		321	=item cf::async { BLOCK }
		322
		323	Currently the same as Coro::async_pool, meaning you cannot use
		324	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		325	thing you are allowed to do is call C<prio> on it.
		326
		327	=cut
		328
		329	BEGIN { *async = \&Coro::async_pool }
		330
		331	=item cf::sync_job { BLOCK }
		332
		333	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		334	is always able to handle events or runnable, as Crossfire TRT is only
		335	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		336	acceptable.
		337
		338	If it must be done, put the blocking parts into C<sync_job>. This will run
		339	the given BLOCK in another coroutine while waiting for the result. The
		340	server will be frozen during this time, so the block should either finish
		341	fast or be very important.
		342
		343	=cut
		344
		345	sub sync_job(&) {
		346	my ($job) = @_;
		347
		348	if ($Coro::current == $Coro::main) {
		349	my $time = Event::time;
		350
		351	# this is the main coro, too bad, we have to block
		352	# till the operation succeeds, freezing the server :/
		353
		354	# TODO: use suspend/resume instead
		355	# (but this is cancel-safe)
		356	my $freeze_guard = freeze_mainloop;
		357
		358	my $busy = 1;
		359	my @res;
		360
		361	(async {
		362	@res = eval { $job->() };
		363	warn $@ if $@;
		364	undef $busy;
		365	})->prio (Coro::PRIO_MAX);
		366
		367	while ($busy) {
		368	Coro::cede or Event::one_event;
		369	}
		370
		371	$time = Event::time - $time;
		372
		373	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		374	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		375
		376	$tick_start += $time; # do not account sync jobs to server load
		377
		378	wantarray ? @res : $res[0]
		379	} else {
		380	# we are in another coroutine, how wonderful, everything just works
		381
		382	$job->()
		383	}
		384	}
		385
		386	=item $coro = cf::async_ext { BLOCK }
		387
		388	Like async, but this coro is automatically being canceled when the
		389	extension calling this is being unloaded.
		390
		391	=cut
		392
		393	sub async_ext(&) {
		394	my $cb = shift;
		395
		396	my $coro = &Coro::async ($cb);
		397
		398	$coro->on_destroy (sub {
		399	delete $EXT_CORO{$coro+0};
		400	});
		401	$EXT_CORO{$coro+0} = $coro;
		402
		403	$coro
		404	}
		405
		406	=item fork_call { }, $args
		407
		408	Executes the given code block with the given arguments in a seperate
		409	process, returning the results. Everything must be serialisable with
		410	Coro::Storable. May, of course, block. Note that the executed sub may
		411	never block itself or use any form of Event handling.
		412
		413	=cut
		414
		415	sub _store_scalar {
		416	open my $fh, ">", \my $buf
		417	or die "fork_call: cannot open fh-to-buf in child : $!";
		418	Storable::store_fd $_[0], $fh;
		419	close $fh;
		420
		421	$buf
		422	}
		423
		424	sub fork_call(&@) {
		425	my ($cb, @args) = @_;
		426
		427	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		428	# or die "socketpair: $!";
		429	pipe my $fh1, my $fh2
		430	or die "pipe: $!";
		431
		432	if (my $pid = fork) {
		433	close $fh2;
		434
		435	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		436	warn "pst<$res>" unless $res =~ /^pst/;
		437	$res = Coro::Storable::thaw $res;
		438
		439	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		440
		441	Carp::confess $$res unless "ARRAY" eq ref $res;
		442
		443	return wantarray ? @$res : $res->[-1];
		444	} else {
		445	reset_signals;
		446	local $SIG{__WARN__};
		447	local $SIG{__DIE__};
		448	# just in case, this hack effectively disables event
		449	# in the child. cleaner and slower would be canceling all watchers,
		450	# but this works for the time being.
		451	local $Coro::idle;
		452	$Coro::current->prio (Coro::PRIO_MAX);
		453
		454	eval {
		455	close $fh1;
		456
		457	my @res = eval { $cb->(@args) };
		458
		459	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		460	close $fh2;
		461	};
		462
		463	warn $@ if $@;
		464	_exit 0;
		465	}
		466	}
		467
		468	=item $value = cf::db_get $family => $key
		469
		470	Returns a single value from the environment database.
		471
		472	=item cf::db_put $family => $key => $value
		473
		474	Stores the given C<$value> in the family. It can currently store binary
		475	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		476
		477	=cut
		478
		479	our $DB;
		480
		481	sub db_init {
		482	unless ($DB) {
		483	$DB = BDB::db_create $DB_ENV;
		484
		485	cf::sync_job {
		486	eval {
		487	$DB->set_flags (BDB::CHKSUM);
		488
		489	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		490	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		491	cf::cleanup "db_open(db): $!" if $!;
		492	};
		493	cf::cleanup "db_open(db): $@" if $@;
		494	};
		495	}
		496	}
		497
		498	sub db_get($$) {
		499	my $key = "$_[0]/$_[1]";
		500
		501	cf::sync_job {
		502	BDB::db_get $DB, undef, $key, my $data;
		503
		504	$! ? ()
		505	: $data
		506	}
		507	}
		508
		509	sub db_put($$$) {
		510	BDB::dbreq_pri 4;
		511	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		512	}
		513
		514	=item cf::cache $id => [$paths...], $processversion => $process
		515
		516	Generic caching function that returns the value of the resource $id,
		517	caching and regenerating as required.
		518
		519	This function can block.
		520
		521	=cut
		522
		523	sub cache {
		524	my ($id, $src, $processversion, $process) = @_;
		525
		526	my $meta =
		527	join "\x00",
		528	$processversion,
		529	map {
		530	aio_stat $_
		531	and Carp::croak "$_: $!";
		532
		533	($_, (stat _)[7,9])
		534	} @$src;
		535
		536	my $dbmeta = db_get cache => "$id/meta";
		537	if ($dbmeta ne $meta) {
		538	# changed, we may need to process
		539
		540	my @data;
		541	my $md5;
		542
		543	for (0 .. $#$src) {
		544	0 <= aio_load $src->[$_], $data[$_]
		545	or Carp::croak "$src->[$_]: $!";
		546	}
		547
		548	# if processing is expensive, check
		549	# checksum first
		550	if (1) {
		551	$md5 =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	Coro::cede;
		556	($src->[$_], Digest::MD5::md5_hex $data[$_])
		557	} 0.. $#$src;
		558
		559
		560	my $dbmd5 = db_get cache => "$id/md5";
		561	if ($dbmd5 eq $md5) {
		562	db_put cache => "$id/meta", $meta;
		563
		564	return db_get cache => "$id/data";
		565	}
		566	}
		567
		568	my $t1 = Time::HiRes::time;
		569	my $data = $process->(\@data);
		570	my $t2 = Time::HiRes::time;
		571
		572	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		573
		574	db_put cache => "$id/data", $data;
		575	db_put cache => "$id/md5" , $md5;
		576	db_put cache => "$id/meta", $meta;
		577
		578	return $data;
		579	}
		580
		581	db_get cache => "$id/data"
		582	}
		583
		584	=item cf::datalog type => key => value, ...
		585
		586	Log a datalog packet of the given type with the given key-value pairs.
		587
		588	=cut
		589
		590	sub datalog($@) {
		591	my ($type, %kv) = @_;
		592	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
118	}	593	}
119		594
120	=back	595	=back
121		596
122	=cut	597	=cut
123		598
124	#############################################################################	599	#############################################################################
125		600
126	=head2 EVENTS AND OBJECT ATTACHMENTS	601	=head2 ATTACHABLE OBJECTS
		602
		603	Many objects in crossfire are so-called attachable objects. That means you can
		604	attach callbacks/event handlers (a collection of which is called an "attachment")
		605	to it. All such attachable objects support the following methods.
		606
		607	In the following description, CLASS can be any of C<global>, C<object>
		608	C<player>, C<client> or C<map> (i.e. the attachable objects in
		609	Crossfire TRT).
127		610
128	=over 4	611	=over 4
129		612
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	613	=item $attachable->attach ($attachment, key => $value...)
143		614
144	=item $map->detach ($attachment)	615	=item $attachable->detach ($attachment)
145		616
146	Attach/detach a pre-registered attachment to a map.	617	Attach/detach a pre-registered attachment to a specific object and give it
		618	the specified key/value pairs as arguments.
147		619
148	=item $bool = $object->attached ($name)	620	Example, attach a minesweeper attachment to the given object, making it a
		621	10x10 minesweeper game:
149		622
150	=item $bool = $player->attached ($name)	623	$obj->attach (minesweeper => width => 10, height => 10);
151		624
152	=item $bool = $map->attached ($name)	625	=item $bool = $attachable->attached ($name)
153		626
154	Checks wether the named attachment is currently attached to the object.	627	Checks wether the named attachment is currently attached to the object.
155		628
156	=item cf::attach_global ...	629	=item cf::CLASS->attach ...
157		630
158	Attach handlers for global events.	631	=item cf::CLASS->detach ...
159		632
160	This and all following C<attach_*>-functions expect any number of the	633	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	634	CLASS. See the next function for an explanation of its arguments.
		635
		636	You can attach to global events by using the C<cf::global> class.
		637
		638	Example, log all player logins:
		639
		640	cf::player->attach (
		641	on_login => sub {
		642	my ($pl) = @_;
		643	...
		644	},
		645	);
		646
		647	Example, attach to the jeweler skill:
		648
		649	cf::object->attach (
		650	type => cf::SKILL,
		651	subtype => cf::SK_JEWELER,
		652	on_use_skill => sub {
		653	my ($sk, $ob, $part, $dir, $msg) = @_;
		654	...
		655	},
		656	);
		657
		658	=item cf::CLASS::attachment $name, ...
		659
		660	Register an attachment by C<$name> through which attachable objects of the
		661	given CLASS can refer to this attachment.
		662
		663	Some classes such as crossfire maps and objects can specify attachments
		664	that are attached at load/instantiate time, thus the need for a name.
		665
		666	These calls expect any number of the following handler/hook descriptions:
162		667
163	=over 4	668	=over 4
164		669
165	=item prio => $number	670	=item prio => $number
166		671
…		…
168	by another C<prio> setting). Lower priority handlers get executed	673	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	674	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	675	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	676	unless you know what you are doing.
172		677
		678	=item type => $type
		679
		680	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		681	given type of objects only (the additional parameter C<subtype> can be
		682	used to further limit to the given subtype).
		683
173	=item on_I<event> => \&cb	684	=item on_I<event> => \&cb
174		685
175	Call the given code reference whenever the named event happens (event is	686	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	687	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	688	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	697	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	698	object/class are recognised.
188		699
189	=back	700	=back
190		701
191	=item cf::attach_to_type $object_type, $subtype, ...	702	Example, define an attachment called "sockpuppet" that calls the given
		703	event handler when a monster attacks:
192		704
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	705	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	706	on_skill_attack => sub {
195	type.	707	my ($self, $victim) = @_;
196		708	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	709	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	710	}
418	}
419		711
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	712	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
425
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.
429
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		713
446	Just because you have a perl object does not mean that the corresponding	714	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	715	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	716	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	717	can be used to test for existence of the C object part without causing an
450	exception.	718	exception.
451		719
		720	=cut
		721
		722	# the following variables are defined in .xs and must not be re-created
		723	our @CB_GLOBAL = (); # registry for all global events
		724	our @CB_ATTACHABLE = (); # registry for all attachables
		725	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		726	our @CB_PLAYER = ();
		727	our @CB_CLIENT = ();
		728	our @CB_TYPE = (); # registry for type (cf-object class) based events
		729	our @CB_MAP = ();
		730
		731	my %attachment;
		732
		733	sub cf::attachable::thawer_merge {
		734	# simply override everything except _meta
		735	local $_[0]{_meta};
		736	%{$_[0]} = %{$_[1]};
		737	}
		738
		739	sub _attach_cb($$$$) {
		740	my ($registry, $event, $prio, $cb) = @_;
		741
		742	use sort 'stable';
		743
		744	$cb = [$prio, $cb];
		745
		746	@{$registry->[$event]} = sort
		747	{ $a->[0] cmp $b->[0] }
		748	@{$registry->[$event] || []}, $cb;
		749	}
		750
		751	# hack
		752	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		753
		754	# attach handles attaching event callbacks
		755	# the only thing the caller has to do is pass the correct
		756	# registry (== where the callback attaches to).
		757	sub _attach {
		758	my ($registry, $klass, @arg) = @_;
		759
		760	my $object_type;
		761	my $prio = 0;
		762	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		763
		764	#TODO: get rid of this hack
		765	if ($attachable_klass{$klass}) {
		766	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		767	}
		768
		769	while (@arg) {
		770	my $type = shift @arg;
		771
		772	if ($type eq "prio") {
		773	$prio = shift @arg;
		774
		775	} elsif ($type eq "type") {
		776	$object_type = shift @arg;
		777	$registry = $CB_TYPE[$object_type] ||= [];
		778
		779	} elsif ($type eq "subtype") {
		780	defined $object_type or Carp::croak "subtype specified without type";
		781	my $object_subtype = shift @arg;
		782	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		783
		784	} elsif ($type eq "package") {
		785	my $pkg = shift @arg;
		786
		787	while (my ($name, $id) = each %cb_id) {
		788	if (my $cb = $pkg->can ($name)) {
		789	_attach_cb $registry, $id, $prio, $cb;
		790	}
		791	}
		792
		793	} elsif (exists $cb_id{$type}) {
		794	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		795
		796	} elsif (ref $type) {
		797	warn "attaching objects not supported, ignoring.\n";
		798
		799	} else {
		800	shift @arg;
		801	warn "attach argument '$type' not supported, ignoring.\n";
		802	}
		803	}
		804	}
		805
		806	sub _object_attach {
		807	my ($obj, $name, %arg) = @_;
		808
		809	return if exists $obj->{_attachment}{$name};
		810
		811	if (my $attach = $attachment{$name}) {
		812	my $registry = $obj->registry;
		813
		814	for (@$attach) {
		815	my ($klass, @attach) = @$_;
		816	_attach $registry, $klass, @attach;
		817	}
		818
		819	$obj->{$name} = \%arg;
		820	} else {
		821	warn "object uses attachment '$name' which is not available, postponing.\n";
		822	}
		823
		824	$obj->{_attachment}{$name} = undef;
		825	}
		826
		827	sub cf::attachable::attach {
		828	if (ref $_[0]) {
		829	_object_attach @_;
		830	} else {
		831	_attach shift->_attach_registry, @_;
		832	}
		833	_recalc_want;
		834	};
		835
		836	# all those should be optimised
		837	sub cf::attachable::detach {
		838	my ($obj, $name) = @_;
		839
		840	if (ref $obj) {
		841	delete $obj->{_attachment}{$name};
		842	reattach ($obj);
		843	} else {
		844	Carp::croak "cannot, currently, detach class attachments";
		845	}
		846	_recalc_want;
		847	};
		848
		849	sub cf::attachable::attached {
		850	my ($obj, $name) = @_;
		851
		852	exists $obj->{_attachment}{$name}
		853	}
		854
		855	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		856	eval "#line " . __LINE__ . " 'cf.pm'
		857	sub cf::\L$klass\E::_attach_registry {
		858	(\\\@CB_$klass, KLASS_$klass)
		859	}
		860
		861	sub cf::\L$klass\E::attachment {
		862	my \$name = shift;
		863
		864	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		865	}
		866	";
		867	die if $@;
		868	}
		869
		870	our $override;
		871	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		872
		873	sub override {
		874	$override = 1;
		875	@invoke_results = ();
		876	}
		877
		878	sub do_invoke {
		879	my $event = shift;
		880	my $callbacks = shift;
		881
		882	@invoke_results = ();
		883
		884	local $override;
		885
		886	for (@$callbacks) {
		887	eval { &{$_->[1]} };
		888
		889	if ($@) {
		890	warn "$@";
		891	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		892	override;
		893	}
		894
		895	return 1 if $override;
		896	}
		897
		898	0
		899	}
		900
		901	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		902
		903	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		904
		905	Generate an object-specific event with the given arguments.
		906
		907	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		908	removed in future versions), and there is no public API to access override
		909	results (if you must, access C<@cf::invoke_results> directly).
		910
452	=back	911	=back
453		912
454	=cut	913	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		914
460	#############################################################################	915	#############################################################################
461	# object support	916	# object support
462		917
463	sub instantiate {
464	my ($obj, $data) = @_;
465
466	$data = from_json $data;
467
468	for (@$data) {
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}
474
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	918	sub reattach {
		919	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	920	my ($obj) = @_;
		921
		922	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		923
478	my $registry = $obj->registry;	924	my $registry = $obj->registry;
479		925
480	@$registry = ();	926	@$registry = ();
481		927
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	928	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		929
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	930	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	931	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	932	for (@$attach) {
487	my ($klass, @attach) = @$_;	933	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	934	_attach $registry, $klass, @attach;
489	}	935	}
490	} else {	936	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	937	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	938	}
493	}	939	}
494	}	940	}
495		941
496	sub object_freezer_save {	942	cf::attachable->attach (
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}
525	}
526
527	sub object_thawer_load {
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	943	prio => -1000000,
		944	on_instantiate => sub {
		945	my ($obj, $data) = @_;
		946
		947	$data = from_json $data;
		948
		949	for (@$data) {
		950	my ($name, $args) = @$_;
		951
		952	$obj->attach ($name, %{$args || {} });
		953	}
		954	},
		955	on_reattach => \&reattach,
548	on_clone => sub {	956	on_clone => sub {
549	my ($src, $dst) = @_;	957	my ($src, $dst) = @_;
550		958
551	@{$dst->registry} = @{$src->registry};	959	@{$dst->registry} = @{$src->registry};
552		960
553	%$dst = %$src;	961	%$dst = %$src;
554		962
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	963	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	964	if exists $src->{_attachment};
557	},	965	},
558	;	966	);
		967
		968	sub object_freezer_save {
		969	my ($filename, $rdata, $objs) = @_;
		970
		971	sync_job {
		972	if (length $$rdata) {
		973	warn sprintf "saving %s (%d,%d)\n",
		974	$filename, length $$rdata, scalar @$objs;
		975
		976	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		977	chmod SAVE_MODE, $fh;
		978	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		979	aio_fsync $fh if $cf::USE_FSYNC;
		980	close $fh;
		981
		982	if (@$objs) {
		983	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		984	chmod SAVE_MODE, $fh;
		985	my $data = Storable::nfreeze { version => 1, objs => $objs };
		986	aio_write $fh, 0, (length $data), $data, 0;
		987	aio_fsync $fh if $cf::USE_FSYNC;
		988	close $fh;
		989	aio_rename "$filename.pst~", "$filename.pst";
		990	}
		991	} else {
		992	aio_unlink "$filename.pst";
		993	}
		994
		995	aio_rename "$filename~", $filename;
		996	} else {
		997	warn "FATAL: $filename~: $!\n";
		998	}
		999	} else {
		1000	aio_unlink $filename;
		1001	aio_unlink "$filename.pst";
		1002	}
		1003	}
		1004	}
		1005
		1006	sub object_freezer_as_string {
		1007	my ($rdata, $objs) = @_;
		1008
		1009	use Data::Dumper;
		1010
		1011	$$rdata . Dumper $objs
		1012	}
		1013
		1014	sub object_thawer_load {
		1015	my ($filename) = @_;
		1016
		1017	my ($data, $av);
		1018
		1019	(aio_load $filename, $data) >= 0
		1020	or return;
		1021
		1022	unless (aio_stat "$filename.pst") {
		1023	(aio_load "$filename.pst", $av) >= 0
		1024	or return;
		1025	$av = eval { (Storable::thaw $av)->{objs} };
		1026	}
		1027
		1028	warn sprintf "loading %s (%d)\n",
		1029	$filename, length $data, scalar @{$av || []};
		1030	return ($data, $av);
		1031	}
		1032
		1033	=head2 COMMAND CALLBACKS
		1034
		1035	=over 4
		1036
		1037	=cut
559		1038
560	#############################################################################	1039	#############################################################################
561	# old plug-in events	1040	# command handling &c
562		1041
563	sub inject_event {	1042	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		1043
567	my $cb = $hook[$event_code]{$extension}	1044	Register a callback for execution when the client sends the user command
568	or return;	1045	$name.
569		1046
570	&$cb	1047	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		1048
592	sub register_command {	1049	sub register_command {
593	my ($name, $time, $cb) = @_;	1050	my ($name, $cb) = @_;
594		1051
595	my $caller = caller;	1052	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	1053	#warn "registering command '$name/$time' to '$caller'";
597		1054
598	push @{ $command{$name} }, [$time, $cb, $caller];	1055	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	1056	}
		1057
		1058	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1059
		1060	Register a callback for execution when the client sends an (synchronous)
		1061	extcmd packet. Ext commands will be processed in the order they are
		1062	received by the server, like other user commands. The first argument is
		1063	the logged-in player. Ext commands can only be processed after a player
		1064	has logged in successfully.
		1065
		1066	If the callback returns something, it is sent back as if reply was being
		1067	called.
		1068
		1069	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1070
		1071	Register a callback for execution when the client sends an (asynchronous)
		1072	exticmd packet. Exti commands are processed by the server as soon as they
		1073	are received, i.e. out of order w.r.t. other commands. The first argument
		1074	is a client socket. Exti commands can be received anytime, even before
		1075	log-in.
		1076
		1077	If the callback returns something, it is sent back as if reply was being
		1078	called.
		1079
		1080	=cut
601		1081
602	sub register_extcmd {	1082	sub register_extcmd {
603	my ($name, $cb) = @_;	1083	my ($name, $cb) = @_;
604		1084
605	my $caller = caller;	1085	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	1086	}
610		1087
611	sub register {	1088	sub register_exticmd {
612	my ($base, $pkg) = @_;	1089	my ($name, $cb) = @_;
613		1090
614	#TODO	1091	$EXTICMD{$name} = $cb;
615	}	1092	}
616		1093
617	sub load_extension {	1094	cf::player->attach (
618	my ($path) = @_;	1095	on_command => sub {
		1096	my ($pl, $name, $params) = @_;
619		1097
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1098	my $cb = $COMMAND{$name}
621	my $base = $1;	1099	or return;
622	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";
625		1100
626	warn "loading '$path' into '$pkg'\n";	1101	for my $cmd (@$cb) {
627		1102	$cmd->[1]->($pl->ob, $params);
628	open my $fh, "<:utf8", $path
629	or die "$path: $!";
630
631	my $source =
632	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })
635	. "\n};\n1";
636
637	eval $source
638	or die "$path: $@";
639
640	push @exts, $pkg;
641	$ext_pkg{$base} = $pkg;
642
643	# no strict 'refs';
644	# @{"$pkg\::ISA"} = ext::;
645
646	register $base, $pkg;
647	}
648
649	sub unload_extension {
650	my ($pkg) = @_;
651
652	warn "removing extension $pkg\n";
653
654	# remove hooks
655	#TODO
656	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};
658	# }
659
660	# remove commands
661	for my $name (keys %command) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
663
664	if (@cb) {
665	$command{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};
670	}	1103	}
		1104
		1105	cf::override;
671	}	1106	},
672
673	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
675	delete $extcmd{$name};
676	}
677
678	if (my $cb = $pkg->can ("unload")) {
679	eval {
680	$cb->($pkg);
681	1
682	} or warn "$pkg unloaded, but with errors: $@";
683	}
684
685	Symbol::delete_package $pkg;
686	}
687
688	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;
693	eval {
694	load_extension $ext;
695	1
696	} or warn "$ext not loaded: $@";
697	}
698	}
699
700	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703
704	attach_to_players
705	on_extcmd => sub {	1107	on_extcmd => sub {
706	my ($pl, $buf) = @_;	1108	my ($pl, $buf) = @_;
707		1109
708	my $msg = eval { from_json $buf };	1110	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
709		1111
710	if (ref $msg) {	1112	if (ref $msg) {
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1113	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1114	if (my %reply = $cb->($pl, $msg)) {
713	$pl->ext_reply ($msg->{msgid}, %reply);	1115	$pl->ext_reply ($msg->{msgid}, %reply);
714	}	1116	}
715	}	1117	}
716	} else {	1118	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1119	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
718	}	1120	}
719		1121
720	cf::override;	1122	cf::override;
721	},	1123	},
722	;	1124	);
		1125
		1126	sub load_extensions {
		1127	cf::sync_job {
		1128	my %todo;
		1129
		1130	for my $path (<$LIBDIR/*.ext>) {
		1131	next unless -r $path;
		1132
		1133	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1134	my $base = $1;
		1135	my $pkg = $1;
		1136	$pkg =~ s/[^[:word:]]/_/g;
		1137	$pkg = "ext::$pkg";
		1138
		1139	open my $fh, "<:utf8", $path
		1140	or die "$path: $!";
		1141
		1142	my $source = do { local $/; <$fh> };
		1143
		1144	my %ext = (
		1145	path => $path,
		1146	base => $base,
		1147	pkg => $pkg,
		1148	);
		1149
		1150	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1151	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1152
		1153	$ext{source} =
		1154	"package $pkg; use strict; use utf8;\n"
		1155	. "#line 1 \"$path\"\n{\n"
		1156	. $source
		1157	. "\n};\n1";
		1158
		1159	$todo{$base} = \%ext;
		1160	}
		1161
		1162	my %done;
		1163	while (%todo) {
		1164	my $progress;
		1165
		1166	while (my ($k, $v) = each %todo) {
		1167	for (split /,\s*/, $v->{meta}{depends}) {
		1168	goto skip
		1169	unless exists $done{$_};
		1170	}
		1171
		1172	warn "... loading '$k' into '$v->{pkg}'\n";
		1173
		1174	unless (eval $v->{source}) {
		1175	my $msg = $@ ? "$v->{path}: $@\n"
		1176	: "$v->{base}: extension inactive.\n";
		1177
		1178	if (exists $v->{meta}{mandatory}) {
		1179	warn $msg;
		1180	warn "mandatory extension failed to load, exiting.\n";
		1181	exit 1;
		1182	}
		1183
		1184	warn $msg;
		1185	}
		1186
		1187	$done{$k} = delete $todo{$k};
		1188	push @EXTS, $v->{pkg};
		1189	$progress = 1;
		1190	}
		1191
		1192	skip:
		1193	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1194	unless $progress;
		1195	}
		1196	};
		1197	}
723		1198
724	#############################################################################	1199	#############################################################################
725	# load/save/clean perl data associated with a map
726		1200
727	*cf::mapsupport::on_clean = sub {	1201	=back
		1202
		1203	=head2 CORE EXTENSIONS
		1204
		1205	Functions and methods that extend core crossfire objects.
		1206
		1207	=cut
		1208
		1209	package cf::player;
		1210
		1211	use Coro::AIO;
		1212
		1213	=head3 cf::player
		1214
		1215	=over 4
		1216
		1217	=item cf::player::find $login
		1218
		1219	Returns the given player object, loading it if necessary (might block).
		1220
		1221	=cut
		1222
		1223	sub playerdir($) {
		1224	"$PLAYERDIR/"
		1225	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1226	}
		1227
		1228	sub path($) {
		1229	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1230
		1231	(playerdir $login) . "/playerdata"
		1232	}
		1233
		1234	sub find_active($) {
		1235	$cf::PLAYER{$_[0]}
		1236	and $cf::PLAYER{$_[0]}->active
		1237	and $cf::PLAYER{$_[0]}
		1238	}
		1239
		1240	sub exists($) {
		1241	my ($login) = @_;
		1242
		1243	$cf::PLAYER{$login}
		1244	or cf::sync_job { !aio_stat path $login }
		1245	}
		1246
		1247	sub find($) {
		1248	return $cf::PLAYER{$_[0]} || do {
		1249	my $login = $_[0];
		1250
		1251	my $guard = cf::lock_acquire "user_find:$login";
		1252
		1253	$cf::PLAYER{$_[0]} || do {
		1254	# rename old playerfiles to new ones
		1255	#TODO: remove when no longer required
		1256	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1257	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1258	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1259	aio_unlink +(playerdir $login) . "/$login.pl";
		1260
		1261	my $pl = load_pl path $login
		1262	or return;
		1263	$cf::PLAYER{$login} = $pl
		1264	}
		1265	}
		1266	}
		1267
		1268	sub save($) {
		1269	my ($pl) = @_;
		1270
		1271	return if $pl->{deny_save};
		1272
		1273	my $path = path $pl;
		1274	my $guard = cf::lock_acquire "user_save:$path";
		1275
		1276	return if $pl->{deny_save};
		1277
		1278	aio_mkdir playerdir $pl, 0770;
		1279	$pl->{last_save} = $cf::RUNTIME;
		1280
		1281	$pl->save_pl ($path);
		1282	Coro::cede;
		1283	}
		1284
		1285	sub new($) {
		1286	my ($login) = @_;
		1287
		1288	my $self = create;
		1289
		1290	$self->ob->name ($login);
		1291	$self->{deny_save} = 1;
		1292
		1293	$cf::PLAYER{$login} = $self;
		1294
		1295	$self
		1296	}
		1297
		1298	=item $pl->quit_character
		1299
		1300	Nukes the player without looking back. If logged in, the connection will
		1301	be destroyed. May block for a long time.
		1302
		1303	=cut
		1304
		1305	sub quit_character {
		1306	my ($pl) = @_;
		1307
		1308	my $name = $pl->ob->name;
		1309
		1310	$pl->{deny_save} = 1;
		1311	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1312
		1313	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1314	$pl->deactivate;
		1315	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1316	$pl->ns->destroy if $pl->ns;
		1317
		1318	my $path = playerdir $pl;
		1319	my $temp = "$path~$cf::RUNTIME~deleting~";
		1320	aio_rename $path, $temp;
		1321	delete $cf::PLAYER{$pl->ob->name};
		1322	$pl->destroy;
		1323
		1324	my $prefix = qr<^~\Q$name\E/>;
		1325
		1326	# nuke player maps
		1327	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1328
		1329	IO::AIO::aio_rmtree $temp;
		1330	}
		1331
		1332	=item $pl->kick
		1333
		1334	Kicks a player out of the game. This destroys the connection.
		1335
		1336	=cut
		1337
		1338	sub kick {
		1339	my ($pl, $kicker) = @_;
		1340
		1341	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1342	$pl->killer ("kicked");
		1343	$pl->ns->destroy;
		1344	}
		1345
		1346	=item cf::player::list_logins
		1347
		1348	Returns am arrayref of all valid playernames in the system, can take a
		1349	while and may block, so not sync_job-capable, ever.
		1350
		1351	=cut
		1352
		1353	sub list_logins {
		1354	my $dirs = aio_readdir $PLAYERDIR
		1355	or return [];
		1356
		1357	my @logins;
		1358
		1359	for my $login (@$dirs) {
		1360	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1361	aio_read $fh, 0, 512, my $buf, 0 or next;
		1362	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1363
		1364	utf8::decode $login;
		1365	push @logins, $login;
		1366	}
		1367
		1368	\@logins
		1369	}
		1370
		1371	=item $player->maps
		1372
		1373	Returns an arrayref of map paths that are private for this
		1374	player. May block.
		1375
		1376	=cut
		1377
		1378	sub maps($) {
		1379	my ($pl) = @_;
		1380
		1381	$pl = ref $pl ? $pl->ob->name : $pl;
		1382
		1383	my $files = aio_readdir playerdir $pl
		1384	or return;
		1385
		1386	my @paths;
		1387
		1388	for (@$files) {
		1389	utf8::decode $_;
		1390	next if /\.(?:pl|pst)$/;
		1391	next unless /^$PATH_SEP/o;
		1392
		1393	push @paths, cf::map::normalise "~$pl/$_";
		1394	}
		1395
		1396	\@paths
		1397	}
		1398
		1399	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1400
		1401	Expand crossfire pod fragments into protocol xml.
		1402
		1403	=cut
		1404
		1405	sub expand_cfpod {
		1406	((my $self), (local $_)) = @_;
		1407
		1408	# escape & and <
		1409	s/&/&amp;/g;
		1410	s/(?<![BIUGH])</&lt;/g;
		1411
		1412	# this is buggy, it needs to properly take care of nested <'s
		1413
		1414	1 while
		1415	# replace B<>, I<>, U<> etc.
		1416	s/B<([^\>]*)>/<b>$1<\/b>/
		1417	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1418	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1419	# replace G<male|female> tags
		1420	|| s{G<([^>|]*)\|([^>]*)>}{
		1421	$self->gender ? $2 : $1
		1422	}ge
		1423	# replace H<hint text>
		1424	|| s{H<([^\>]*)>}
		1425	{
		1426	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1427	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1428	"")
		1429	[$self->{hintmode}]
		1430	}ge;
		1431
		1432	# create single paragraphs (very hackish)
		1433	s/(?<=\S)\n(?=\w)/ /g;
		1434
		1435	# compress some whitespace
		1436	s/\s+\n/\n/g; # ws line-ends
		1437	s/\n\n+/\n/g; # double lines
		1438	s/^\n+//; # beginning lines
		1439	s/\n+$//; # ending lines
		1440
		1441	$_
		1442	}
		1443
		1444	sub hintmode {
		1445	$_[0]{hintmode} = $_[1] if @_ > 1;
		1446	$_[0]{hintmode}
		1447	}
		1448
		1449	=item $player->ext_reply ($msgid, %msg)
		1450
		1451	Sends an ext reply to the player.
		1452
		1453	=cut
		1454
		1455	sub ext_reply($$%) {
		1456	my ($self, $id, %msg) = @_;
		1457
		1458	$msg{msgid} = $id;
		1459	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1460	}
		1461
		1462	=item $player->ext_event ($type, %msg)
		1463
		1464	Sends an ext event to the client.
		1465
		1466	=cut
		1467
		1468	sub ext_event($$%) {
		1469	my ($self, $type, %msg) = @_;
		1470
		1471	$self->ns->ext_event ($type, %msg);
		1472	}
		1473
		1474	=head3 cf::region
		1475
		1476	=over 4
		1477
		1478	=cut
		1479
		1480	package cf::region;
		1481
		1482	=item cf::region::find_by_path $path
		1483
		1484	Tries to decuce the likely region for a map knowing only its path.
		1485
		1486	=cut
		1487
		1488	sub find_by_path($) {
		1489	my ($path) = @_;
		1490
		1491	my ($match, $specificity);
		1492
		1493	for my $region (list) {
		1494	if ($region->match && $path =~ $region->match) {
		1495	($match, $specificity) = ($region, $region->specificity)
		1496	if $region->specificity > $specificity;
		1497	}
		1498	}
		1499
		1500	$match
		1501	}
		1502
		1503	=back
		1504
		1505	=head3 cf::map
		1506
		1507	=over 4
		1508
		1509	=cut
		1510
		1511	package cf::map;
		1512
		1513	use Fcntl;
		1514	use Coro::AIO;
		1515
		1516	use overload
		1517	'""' => \&as_string,
		1518	fallback => 1;
		1519
		1520	our $MAX_RESET = 3600;
		1521	our $DEFAULT_RESET = 3000;
		1522
		1523	sub generate_random_map {
		1524	my ($self, $rmp) = @_;
		1525	# mit "rum" bekleckern, nicht
		1526	$self->_create_random_map (
		1527	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1528	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1529	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1530	$rmp->{exit_on_final_map},
		1531	$rmp->{xsize}, $rmp->{ysize},
		1532	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1533	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1534	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1535	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1536	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1537	(cf::region::find $rmp->{region}), $rmp->{custom}
		1538	)
		1539	}
		1540
		1541	=item cf::map->register ($regex, $prio)
		1542
		1543	Register a handler for the map path matching the given regex at the
		1544	givne priority (higher is better, built-in handlers have priority 0, the
		1545	default).
		1546
		1547	=cut
		1548
		1549	sub register {
		1550	my (undef, $regex, $prio) = @_;
		1551	my $pkg = caller;
		1552
		1553	no strict;
		1554	push @{"$pkg\::ISA"}, __PACKAGE__;
		1555
		1556	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1557	}
		1558
		1559	# also paths starting with '/'
		1560	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1561
		1562	sub thawer_merge {
		1563	my ($self, $merge) = @_;
		1564
		1565	# we have to keep some variables in memory intact
		1566	local $self->{path};
		1567	local $self->{load_path};
		1568
		1569	$self->SUPER::thawer_merge ($merge);
		1570	}
		1571
		1572	sub normalise {
		1573	my ($path, $base) = @_;
		1574
		1575	$path = "$path"; # make sure its a string
		1576
		1577	$path =~ s/\.map$//;
		1578
		1579	# map plan:
		1580	#
		1581	# /! non-realised random map exit (special hack!)
		1582	# {... are special paths that are not being touched
		1583	# ?xxx/... are special absolute paths
		1584	# ?random/... random maps
		1585	# /... normal maps
		1586	# ~user/... per-player map of a specific user
		1587
		1588	$path =~ s/$PATH_SEP/\//go;
		1589
		1590	# treat it as relative path if it starts with
		1591	# something that looks reasonable
		1592	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1593	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1594
		1595	$base =~ s{[^/]+/?$}{};
		1596	$path = "$base/$path";
		1597	}
		1598
		1599	for ($path) {
		1600	redo if s{//}{/};
		1601	redo if s{/\.?/}{/};
		1602	redo if s{/[^/]+/\.\./}{/};
		1603	}
		1604
		1605	$path
		1606	}
		1607
		1608	sub new_from_path {
		1609	my (undef, $path, $base) = @_;
		1610
		1611	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1612
		1613	$path = normalise $path, $base;
		1614
		1615	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1616	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1617	my $self = bless cf::map::new, $pkg;
		1618	$self->{path} = $path; $self->path ($path);
		1619	$self->init; # pass $1 etc.
		1620	return $self;
		1621	}
		1622	}
		1623
		1624	Carp::carp "unable to resolve path '$path' (base '$base').";
		1625	()
		1626	}
		1627
		1628	sub init {
		1629	my ($self) = @_;
		1630
		1631	$self
		1632	}
		1633
		1634	sub as_string {
		1635	my ($self) = @_;
		1636
		1637	"$self->{path}"
		1638	}
		1639
		1640	# the displayed name, this is a one way mapping
		1641	sub visible_name {
		1642	&as_string
		1643	}
		1644
		1645	# the original (read-only) location
		1646	sub load_path {
		1647	my ($self) = @_;
		1648
		1649	"$MAPDIR/$self->{path}.map"
		1650	}
		1651
		1652	# the temporary/swap location
		1653	sub save_path {
		1654	my ($self) = @_;
		1655
		1656	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1657	"$TMPDIR/$path.map"
		1658	}
		1659
		1660	# the unique path, undef == no special unique path
		1661	sub uniq_path {
		1662	my ($self) = @_;
		1663
		1664	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1665	"$UNIQUEDIR/$path"
		1666	}
		1667
		1668	# and all this just because we cannot iterate over
		1669	# all maps in C++...
		1670	sub change_all_map_light {
		1671	my ($change) = @_;
		1672
		1673	$_->change_map_light ($change)
		1674	for grep $_->outdoor, values %cf::MAP;
		1675	}
		1676
		1677	sub decay_objects {
		1678	my ($self) = @_;
		1679
		1680	return if $self->{deny_reset};
		1681
		1682	$self->do_decay_objects;
		1683	}
		1684
		1685	sub unlink_save {
		1686	my ($self) = @_;
		1687
		1688	utf8::encode (my $save = $self->save_path);
		1689	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1690	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1691	}
		1692
		1693	sub load_header_from($) {
		1694	my ($self, $path) = @_;
		1695
		1696	utf8::encode $path;
		1697	#aio_open $path, O_RDONLY, 0
		1698	# or return;
		1699
		1700	$self->_load_header ($path)
		1701	or return;
		1702
		1703	$self->{load_path} = $path;
		1704
		1705	1
		1706	}
		1707
		1708	sub load_header_orig {
		1709	my ($self) = @_;
		1710
		1711	$self->load_header_from ($self->load_path)
		1712	}
		1713
		1714	sub load_header_temp {
		1715	my ($self) = @_;
		1716
		1717	$self->load_header_from ($self->save_path)
		1718	}
		1719
		1720	sub prepare_temp {
		1721	my ($self) = @_;
		1722
		1723	$self->last_access ((delete $self->{last_access})
		1724	|| $cf::RUNTIME); #d#
		1725	# safety
		1726	$self->{instantiate_time} = $cf::RUNTIME
		1727	if $self->{instantiate_time} > $cf::RUNTIME;
		1728	}
		1729
		1730	sub prepare_orig {
		1731	my ($self) = @_;
		1732
		1733	$self->{load_original} = 1;
		1734	$self->{instantiate_time} = $cf::RUNTIME;
		1735	$self->last_access ($cf::RUNTIME);
		1736	$self->instantiate;
		1737	}
		1738
		1739	sub load_header {
		1740	my ($self) = @_;
		1741
		1742	if ($self->load_header_temp) {
		1743	$self->prepare_temp;
		1744	} else {
		1745	$self->load_header_orig
		1746	or return;
		1747	$self->prepare_orig;
		1748	}
		1749
		1750	$self->{deny_reset} = 1
		1751	if $self->no_reset;
		1752
		1753	$self->default_region (cf::region::find_by_path $self->{path})
		1754	unless $self->default_region;
		1755
		1756	1
		1757	}
		1758
		1759	sub find;
		1760	sub find {
		1761	my ($path, $origin) = @_;
		1762
		1763	$path = normalise $path, $origin && $origin->path;
		1764
		1765	cf::lock_wait "map_find:$path";
		1766
		1767	$cf::MAP{$path} || do {
		1768	my $guard = cf::lock_acquire "map_find:$path";
		1769	my $map = new_from_path cf::map $path
		1770	or return;
		1771
		1772	$map->{last_save} = $cf::RUNTIME;
		1773
		1774	$map->load_header
		1775	or return;
		1776
		1777	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1778	# doing this can freeze the server in a sync job, obviously
		1779	#$cf::WAIT_FOR_TICK->wait;
		1780	$map->reset;
		1781	undef $guard;
		1782	return find $path;
		1783	}
		1784
		1785	$cf::MAP{$path} = $map
		1786	}
		1787	}
		1788
		1789	sub pre_load { }
		1790	sub post_load { }
		1791
		1792	sub load {
		1793	my ($self) = @_;
		1794
		1795	local $self->{deny_reset} = 1; # loading can take a long time
		1796
		1797	my $path = $self->{path};
		1798
		1799	{
		1800	my $guard = cf::lock_acquire "map_load:$path";
		1801
		1802	return if $self->in_memory != cf::MAP_SWAPPED;
		1803
		1804	$self->in_memory (cf::MAP_LOADING);
		1805
		1806	$self->alloc;
		1807
		1808	$self->pre_load;
		1809	Coro::cede;
		1810
		1811	$self->_load_objects ($self->{load_path}, 1)
		1812	or return;
		1813
		1814	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1815	if delete $self->{load_original};
		1816
		1817	if (my $uniq = $self->uniq_path) {
		1818	utf8::encode $uniq;
		1819	if (aio_open $uniq, O_RDONLY, 0) {
		1820	$self->clear_unique_items;
		1821	$self->_load_objects ($uniq, 0);
		1822	}
		1823	}
		1824
		1825	Coro::cede;
		1826	# now do the right thing for maps
		1827	$self->link_multipart_objects;
		1828	$self->difficulty ($self->estimate_difficulty)
		1829	unless $self->difficulty;
		1830	Coro::cede;
		1831
		1832	unless ($self->{deny_activate}) {
		1833	$self->decay_objects;
		1834	$self->fix_auto_apply;
		1835	$self->update_buttons;
		1836	Coro::cede;
		1837	$self->set_darkness_map;
		1838	Coro::cede;
		1839	$self->activate;
		1840	}
		1841
		1842	$self->in_memory (cf::MAP_IN_MEMORY);
		1843	}
		1844
		1845	$self->post_load;
		1846	}
		1847
		1848	sub customise_for {
		1849	my ($self, $ob) = @_;
		1850
		1851	return find "~" . $ob->name . "/" . $self->{path}
		1852	if $self->per_player;
		1853
		1854	# return find "?party/" . $ob->name . "/" . $self->{path}
		1855	# if $self->per_party;
		1856
		1857	$self
		1858	}
		1859
		1860	# find and load all maps in the 3x3 area around a map
		1861	sub load_diag {
728	my ($map) = @_;	1862	my ($map) = @_;
729		1863
730	my $path = $map->tmpname;	1864	my @diag; # diagonal neighbours
731	defined $path or return;
732		1865
733	unlink "$path.pst";	1866	for (0 .. 3) {
734	};	1867	my $neigh = $map->tile_path ($_)
		1868	or next;
		1869	$neigh = find $neigh, $map
		1870	or next;
		1871	$neigh->load;
735		1872
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1873	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1874	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1875	}
737		1876
738	#############################################################################	1877	for (@diag) {
739	# load/save perl data associated with player->ob objects	1878	my $neigh = find @$_
740		1879	or next;
741	sub all_objects(@) {	1880	$neigh->load;
742	@_, map all_objects ($_->inv), @_	1881	}
743	}	1882	}
744		1883
745	# TODO: compatibility cruft, remove when no longer needed	1884	sub find_sync {
746	attach_to_players	1885	my ($path, $origin) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1886
750	for my $o (all_objects $pl->ob) {	1887	cf::sync_job { find $path, $origin }
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1888	}
752	$o->set_ob_key_value ("_perl_data");
753		1889
754	%$o = %{ Storable::thaw pack "H*", $value };	1890	sub do_load_sync {
		1891	my ($map) = @_;
		1892
		1893	cf::sync_job { $map->load };
		1894	}
		1895
		1896	our %MAP_PREFETCH;
		1897	our $MAP_PREFETCHER = undef;
		1898
		1899	sub find_async {
		1900	my ($path, $origin) = @_;
		1901
		1902	$path = normalise $path, $origin && $origin->{path};
		1903
		1904	if (my $map = $cf::MAP{$path}) {
		1905	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1906	}
		1907
		1908	undef $MAP_PREFETCH{$path};
		1909	$MAP_PREFETCHER ||= cf::async {
		1910	while (%MAP_PREFETCH) {
		1911	for my $path (keys %MAP_PREFETCH) {
		1912	my $map = find $path
		1913	or next;
		1914	$map->load;
		1915
		1916	delete $MAP_PREFETCH{$path};
755	}	1917	}
756	}	1918	}
		1919	undef $MAP_PREFETCHER;
		1920	};
		1921	$MAP_PREFETCHER->prio (6);
		1922
		1923	()
		1924	}
		1925
		1926	sub save {
		1927	my ($self) = @_;
		1928
		1929	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1930
		1931	$self->{last_save} = $cf::RUNTIME;
		1932
		1933	return unless $self->dirty;
		1934
		1935	my $save = $self->save_path; utf8::encode $save;
		1936	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1937
		1938	$self->{load_path} = $save;
		1939
		1940	return if $self->{deny_save};
		1941
		1942	local $self->{last_access} = $self->last_access;#d#
		1943
		1944	cf::async {
		1945	$_->contr->save for $self->players;
		1946	};
		1947
		1948	if ($uniq) {
		1949	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1950	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1951	} else {
		1952	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
757	},	1953	}
758	;	1954	}
759		1955
760	#############################################################################	1956	sub swap_out {
		1957	my ($self) = @_;
761		1958
762	=head2 CORE EXTENSIONS	1959	# save first because save cedes
		1960	$self->save;
763		1961
764	Functions and methods that extend core crossfire objects.	1962	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1963
		1964	return if $self->players;
		1965	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1966	return if $self->{deny_save};
		1967
		1968	$self->clear;
		1969	$self->in_memory (cf::MAP_SWAPPED);
		1970	}
		1971
		1972	sub reset_at {
		1973	my ($self) = @_;
		1974
		1975	# TODO: safety, remove and allow resettable per-player maps
		1976	return 1e99 if $self->{deny_reset};
		1977
		1978	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1979	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1980
		1981	$time + $to
		1982	}
		1983
		1984	sub should_reset {
		1985	my ($self) = @_;
		1986
		1987	$self->reset_at <= $cf::RUNTIME
		1988	}
		1989
		1990	sub reset {
		1991	my ($self) = @_;
		1992
		1993	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1994
		1995	return if $self->players;
		1996
		1997	warn "resetting map ", $self->path;
		1998
		1999	$self->in_memory (cf::MAP_SWAPPED);
		2000
		2001	# need to save uniques path
		2002	unless ($self->{deny_save}) {
		2003	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2004
		2005	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2006	if $uniq;
		2007	}
		2008
		2009	delete $cf::MAP{$self->path};
		2010
		2011	$self->clear;
		2012
		2013	$_->clear_links_to ($self) for values %cf::MAP;
		2014
		2015	$self->unlink_save;
		2016	$self->destroy;
		2017	}
		2018
		2019	my $nuke_counter = "aaaa";
		2020
		2021	sub nuke {
		2022	my ($self) = @_;
		2023
		2024	delete $cf::MAP{$self->path};
		2025
		2026	$self->unlink_save;
		2027
		2028	bless $self, "cf::map";
		2029	delete $self->{deny_reset};
		2030	$self->{deny_save} = 1;
		2031	$self->reset_timeout (1);
		2032	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2033
		2034	$cf::MAP{$self->path} = $self;
		2035
		2036	$self->reset; # polite request, might not happen
		2037	}
		2038
		2039	=item $maps = cf::map::tmp_maps
		2040
		2041	Returns an arrayref with all map paths of currently instantiated and saved
		2042	maps. May block.
		2043
		2044	=cut
		2045
		2046	sub tmp_maps() {
		2047	[
		2048	map {
		2049	utf8::decode $_;
		2050	/\.map$/
		2051	? normalise $_
		2052	: ()
		2053	} @{ aio_readdir $TMPDIR or [] }
		2054	]
		2055	}
		2056
		2057	=item $maps = cf::map::random_maps
		2058
		2059	Returns an arrayref with all map paths of currently instantiated and saved
		2060	random maps. May block.
		2061
		2062	=cut
		2063
		2064	sub random_maps() {
		2065	[
		2066	map {
		2067	utf8::decode $_;
		2068	/\.map$/
		2069	? normalise "?random/$_"
		2070	: ()
		2071	} @{ aio_readdir $RANDOMDIR or [] }
		2072	]
		2073	}
		2074
		2075	=item cf::map::unique_maps
		2076
		2077	Returns an arrayref of paths of all shared maps that have
		2078	instantiated unique items. May block.
		2079
		2080	=cut
		2081
		2082	sub unique_maps() {
		2083	[
		2084	map {
		2085	utf8::decode $_;
		2086	/\.map$/
		2087	? normalise $_
		2088	: ()
		2089	} @{ aio_readdir $UNIQUEDIR or [] }
		2090	]
		2091	}
		2092
		2093	package cf;
		2094
		2095	=back
		2096
		2097	=head3 cf::object
		2098
		2099	=cut
		2100
		2101	package cf::object;
765		2102
766	=over 4	2103	=over 4
767		2104
768	=item cf::player::exists $login	2105	=item $ob->inv_recursive
769		2106
770	Returns true when the given account exists.	2107	Returns the inventory of the object _and_ their inventories, recursively.
771		2108
772	=cut	2109	=cut
773		2110
774	sub cf::player::exists($) {	2111	sub inv_recursive_;
775	cf::player::find $_[0]	2112	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2113	map { $_, inv_recursive_ $_->inv } @_
777	}	2114	}
778		2115
		2116	sub inv_recursive {
		2117	inv_recursive_ inv $_[0]
		2118	}
		2119
		2120	package cf;
		2121
		2122	=back
		2123
		2124	=head3 cf::object::player
		2125
		2126	=over 4
		2127
779	=item $object->reply ($npc, $msg[, $flags])	2128	=item $player_object->reply ($npc, $msg[, $flags])
780		2129
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2130	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	2131	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	2132	dialogue with the given NPC character.
784		2133
785	=cut	2134	=cut
786		2135
787	# rough implementation of a future "reply" method that works	2136	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	2137	# with dialog boxes.
		2138	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	2139	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	2140	my ($self, $npc, $msg, $flags) = @_;
791		2141
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2142	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		2143
794	if ($self->{record_replies}) {	2144	if ($self->{record_replies}) {
795	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2145	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2146
796	} else {	2147	} else {
		2148	my $pl = $self->contr;
		2149
		2150	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2151	my $diag = $pl->{npc_dialog};
		2152	$diag->{pl}->ext_reply (
		2153	$diag->{id},
		2154	msgtype => "reply",
		2155	msg => $diag->{pl}->expand_cfpod ($msg),
		2156	add_topics => []
		2157	);
		2158
		2159	} else {
797	$msg = $npc->name . " says: $msg" if $npc;	2160	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	2161	$self->message ($msg, $flags);
		2162	}
		2163	}
		2164	}
		2165
		2166	=item $player_object->may ("access")
		2167
		2168	Returns wether the given player is authorized to access resource "access"
		2169	(e.g. "command_wizcast").
		2170
		2171	=cut
		2172
		2173	sub cf::object::player::may {
		2174	my ($self, $access) = @_;
		2175
		2176	$self->flag (cf::FLAG_WIZ) ||
		2177	(ref $cf::CFG{"may_$access"}
		2178	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2179	: $cf::CFG{"may_$access"})
		2180	}
		2181
		2182	=item $player_object->enter_link
		2183
		2184	Freezes the player and moves him/her to a special map (C<{link}>).
		2185
		2186	The player should be reasonably safe there for short amounts of time. You
		2187	I<MUST> call C<leave_link> as soon as possible, though.
		2188
		2189	Will never block.
		2190
		2191	=item $player_object->leave_link ($map, $x, $y)
		2192
		2193	Moves the player out of the special C<{link}> map onto the specified
		2194	map. If the map is not valid (or omitted), the player will be moved back
		2195	to the location he/she was before the call to C<enter_link>, or, if that
		2196	fails, to the emergency map position.
		2197
		2198	Might block.
		2199
		2200	=cut
		2201
		2202	sub link_map {
		2203	unless ($LINK_MAP) {
		2204	$LINK_MAP = cf::map::find "{link}"
		2205	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2206	$LINK_MAP->load;
		2207	}
		2208
		2209	$LINK_MAP
		2210	}
		2211
		2212	sub cf::object::player::enter_link {
		2213	my ($self) = @_;
		2214
		2215	$self->deactivate_recursive;
		2216
		2217	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2218
		2219	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2220	if $self->map && $self->map->{path} ne "{link}";
		2221
		2222	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2223	}
		2224
		2225	sub cf::object::player::leave_link {
		2226	my ($self, $map, $x, $y) = @_;
		2227
		2228	return unless $self->contr->active;
		2229
		2230	my $link_pos = delete $self->{_link_pos};
		2231
		2232	unless ($map) {
		2233	# restore original map position
		2234	($map, $x, $y) = @{ $link_pos || [] };
		2235	$map = cf::map::find $map;
		2236
		2237	unless ($map) {
		2238	($map, $x, $y) = @$EMERGENCY_POSITION;
		2239	$map = cf::map::find $map
		2240	or die "FATAL: cannot load emergency map\n";
		2241	}
		2242	}
		2243
		2244	($x, $y) = (-1, -1)
		2245	unless (defined $x) && (defined $y);
		2246
		2247	# use -1 or undef as default coordinates, not 0, 0
		2248	($x, $y) = ($map->enter_x, $map->enter_y)
		2249	if $x <=0 && $y <= 0;
		2250
		2251	$map->load;
		2252	$map->load_diag;
		2253
		2254	return unless $self->contr->active;
		2255	$self->activate_recursive;
		2256
		2257	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2258	$self->enter_map ($map, $x, $y);
		2259	}
		2260
		2261	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2262
		2263	Moves the player to the given map-path and coordinates by first freezing
		2264	her, loading and preparing them map, calling the provided $check callback
		2265	that has to return the map if sucecssful, and then unfreezes the player on
		2266	the new (success) or old (failed) map position.
		2267
		2268	=cut
		2269
		2270	our $GOTOGEN;
		2271
		2272	sub cf::object::player::goto {
		2273	my ($self, $path, $x, $y, $check) = @_;
		2274
		2275	# do generation counting so two concurrent goto's will be executed in-order
		2276	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2277
		2278	$self->enter_link;
		2279
		2280	(async {
		2281	my $map = eval {
		2282	my $map = cf::map::find $path;
		2283
		2284	if ($map) {
		2285	$map = $map->customise_for ($self);
		2286	$map = $check->($map) if $check && $map;
		2287	} else {
		2288	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2289	}
		2290
		2291	$map
		2292	};
		2293
		2294	if ($@) {
		2295	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2296	LOG llevError | logBacktrace, Carp::longmess $@;
		2297	}
		2298
		2299	if ($gen == $self->{_goto_generation}) {
		2300	delete $self->{_goto_generation};
		2301	$self->leave_link ($map, $x, $y);
		2302	}
		2303	})->prio (1);
		2304	}
		2305
		2306	=item $player_object->enter_exit ($exit_object)
		2307
		2308	=cut
		2309
		2310	sub parse_random_map_params {
		2311	my ($spec) = @_;
		2312
		2313	my $rmp = { # defaults
		2314	xsize => (cf::rndm 15, 40),
		2315	ysize => (cf::rndm 15, 40),
		2316	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2317	#layout => string,
799	}	2318	};
800	}
801		2319
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	2320	for (split /\n/, $spec) {
		2321	my ($k, $v) = split /\s+/, $_, 2;
803		2322
		2323	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2324	}
		2325
		2326	$rmp
		2327	}
		2328
		2329	sub prepare_random_map {
		2330	my ($exit) = @_;
		2331
		2332	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2333
		2334	# all this does is basically replace the /! path by
		2335	# a new random map path (?random/...) with a seed
		2336	# that depends on the exit object
		2337
		2338	my $rmp = parse_random_map_params $exit->msg;
		2339
		2340	if ($exit->map) {
		2341	$rmp->{region} = $exit->region->name;
		2342	$rmp->{origin_map} = $exit->map->path;
		2343	$rmp->{origin_x} = $exit->x;
		2344	$rmp->{origin_y} = $exit->y;
		2345	}
		2346
		2347	$rmp->{random_seed} ||= $exit->random_seed;
		2348
		2349	my $data = cf::to_json $rmp;
		2350	my $md5 = Digest::MD5::md5_hex $data;
		2351	my $meta = "$RANDOMDIR/$md5.meta";
		2352
		2353	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2354	aio_write $fh, 0, (length $data), $data, 0;
		2355	undef $fh;
		2356	aio_rename "$meta~", $meta;
		2357
		2358	$exit->slaying ("?random/$md5");
		2359	$exit->msg (undef);
		2360	}
		2361	}
		2362
		2363	sub cf::object::player::enter_exit {
		2364	my ($self, $exit) = @_;
		2365
		2366	return unless $self->type == cf::PLAYER;
		2367
		2368	if ($exit->slaying eq "/!") {
		2369	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2370	# the problem is that $exit might not survive long enough
		2371	# so it needs to be done right now, right here
		2372	cf::sync_job { prepare_random_map $exit };
		2373	}
		2374
		2375	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2376	my $hp = $exit->stats->hp;
		2377	my $sp = $exit->stats->sp;
		2378
		2379	$self->enter_link;
		2380
		2381	# if exit is damned, update players death & WoR home-position
		2382	$self->contr->savebed ($slaying, $hp, $sp)
		2383	if $exit->flag (FLAG_DAMNED);
		2384
		2385	(async {
		2386	$self->deactivate_recursive; # just to be sure
		2387	unless (eval {
		2388	$self->goto ($slaying, $hp, $sp);
		2389
		2390	1;
		2391	}) {
		2392	$self->message ("Something went wrong deep within the crossfire server. "
		2393	. "I'll try to bring you back to the map you were before. "
		2394	. "Please report this to the dungeon master!",
		2395	cf::NDI_UNIQUE | cf::NDI_RED);
		2396
		2397	warn "ERROR in enter_exit: $@";
		2398	$self->leave_link;
		2399	}
		2400	})->prio (1);
		2401	}
		2402
		2403	=head3 cf::client
		2404
		2405	=over 4
		2406
		2407	=item $client->send_drawinfo ($text, $flags)
		2408
		2409	Sends a drawinfo packet to the client. Circumvents output buffering so
		2410	should not be used under normal circumstances.
		2411
		2412	=cut
		2413
		2414	sub cf::client::send_drawinfo {
		2415	my ($self, $text, $flags) = @_;
		2416
		2417	utf8::encode $text;
		2418	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2419	}
		2420
		2421	=item $client->send_msg ($color, $type, $msg, [extra...])
		2422
		2423	Send a drawinfo or msg packet to the client, formatting the msg for the
		2424	client if neccessary. C<$type> should be a string identifying the type of
		2425	the message, with C<log> being the default. If C<$color> is negative, suppress
		2426	the message unless the client supports the msg packet.
		2427
		2428	=cut
		2429
		2430	sub cf::client::send_msg {
		2431	my ($self, $color, $type, $msg, @extra) = @_;
		2432
		2433	$msg = $self->pl->expand_cfpod ($msg);
		2434
		2435	return unless @extra || length $msg;
		2436
		2437	if ($self->can_msg) {
		2438	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2439	} else {
		2440	# replace some tags by gcfclient-compatible ones
		2441	for ($msg) {
		2442	1 while
		2443	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2444	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2445	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2446	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2447	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2448	}
		2449
		2450	if ($color >= 0) {
		2451	if (0 && $msg =~ /\[/) {
		2452	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2453	} else {
		2454	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2455	$self->send_packet ("drawinfo $color $msg")
		2456	}
		2457	}
		2458	}
		2459	}
		2460
		2461	=item $client->ext_event ($type, %msg)
		2462
804	Sends an ext reply to the player.	2463	Sends an ext event to the client.
805		2464
806	=cut	2465	=cut
807		2466
808	sub cf::player::ext_reply($$$%) {	2467	sub cf::client::ext_event($$%) {
809	my ($self, $id, %msg) = @_;	2468	my ($self, $type, %msg) = @_;
810		2469
811	$msg{msgid} = $id;	2470	$msg{msgtype} = "event_$type";
812		2471	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
813	$self->send ("ext " . to_json \%msg);
814	}	2472	}
		2473
		2474	=item $success = $client->query ($flags, "text", \&cb)
		2475
		2476	Queues a query to the client, calling the given callback with
		2477	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2478	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2479
		2480	Queries can fail, so check the return code. Or don't, as queries will
		2481	become reliable at some point in the future.
		2482
		2483	=cut
		2484
		2485	sub cf::client::query {
		2486	my ($self, $flags, $text, $cb) = @_;
		2487
		2488	return unless $self->state == ST_PLAYING
		2489	|| $self->state == ST_SETUP
		2490	|| $self->state == ST_CUSTOM;
		2491
		2492	$self->state (ST_CUSTOM);
		2493
		2494	utf8::encode $text;
		2495	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2496
		2497	$self->send_packet ($self->{query_queue}[0][0])
		2498	if @{ $self->{query_queue} } == 1;
		2499
		2500	1
		2501	}
		2502
		2503	cf::client->attach (
		2504	on_connect => sub {
		2505	my ($ns) = @_;
		2506
		2507	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2508	},
		2509	on_reply => sub {
		2510	my ($ns, $msg) = @_;
		2511
		2512	# this weird shuffling is so that direct followup queries
		2513	# get handled first
		2514	my $queue = delete $ns->{query_queue}
		2515	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2516
		2517	(shift @$queue)->[1]->($msg);
		2518	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2519
		2520	push @{ $ns->{query_queue} }, @$queue;
		2521
		2522	if (@{ $ns->{query_queue} } == @$queue) {
		2523	if (@$queue) {
		2524	$ns->send_packet ($ns->{query_queue}[0][0]);
		2525	} else {
		2526	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2527	}
		2528	}
		2529	},
		2530	on_exticmd => sub {
		2531	my ($ns, $buf) = @_;
		2532
		2533	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2534
		2535	if (ref $msg) {
		2536	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2537	if (my %reply = $cb->($ns, $msg)) {
		2538	$reply{msgid} = $msg->{msgid};
		2539	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2540	}
		2541	}
		2542	} else {
		2543	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2544	}
		2545
		2546	cf::override;
		2547	},
		2548	);
		2549
		2550	=item $client->async (\&cb)
		2551
		2552	Create a new coroutine, running the specified callback. The coroutine will
		2553	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2554	or loss of connection).
		2555
		2556	=cut
		2557
		2558	sub cf::client::async {
		2559	my ($self, $cb) = @_;
		2560
		2561	my $coro = &Coro::async ($cb);
		2562
		2563	$coro->on_destroy (sub {
		2564	delete $self->{_coro}{$coro+0};
		2565	});
		2566
		2567	$self->{_coro}{$coro+0} = $coro;
		2568
		2569	$coro
		2570	}
		2571
		2572	cf::client->attach (
		2573	on_destroy => sub {
		2574	my ($ns) = @_;
		2575
		2576	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2577	},
		2578	);
815		2579
816	=back	2580	=back
817		2581
818	=cut
819
820	#############################################################################
821		2582
822	=head2 SAFE SCRIPTING	2583	=head2 SAFE SCRIPTING
823		2584
824	Functions that provide a safe environment to compile and execute	2585	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2586	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2587	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2588	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2589	functions and methods that can be called is greatly reduced.
829		2590
830	=cut	2591	=cut
831		2592
832	our $safe = new Safe "safe";	2593	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2594	our $safe_hole = new Safe::Hole;
…		…
838		2599
839	# here we export the classes and methods available to script code	2600	# here we export the classes and methods available to script code
840		2601
841	=pod	2602	=pod
842		2603
843	The following fucntions and emthods are available within a safe environment:	2604	The following functions and methods are available within a safe environment:
844		2605
845	cf::object contr pay_amount pay_player	2606	cf::object
		2607	contr pay_amount pay_player map x y force_find force_add
		2608	insert remove
		2609
846	cf::object::player player	2610	cf::object::player
847	cf::player peaceful	2611	player
		2612
		2613	cf::player
		2614	peaceful
		2615
		2616	cf::map
		2617	trigger
848		2618
849	=cut	2619	=cut
850		2620
851	for (	2621	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2622	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2623	insert remove)],
853	["cf::object::player" => qw(player)],	2624	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2625	["cf::player" => qw(peaceful)],
		2626	["cf::map" => qw(trigger)],
855	) {	2627	) {
856	no strict 'refs';	2628	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2629	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2630	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2631	for @funs;
…		…
927	=back	2699	=back
928		2700
929	=cut	2701	=cut
930		2702
931	#############################################################################	2703	#############################################################################
		2704	# the server's init and main functions
932		2705
933	=head2 EXTENSION DATABASE SUPPORT	2706	sub load_facedata($) {
		2707	my ($path) = @_;
934		2708
935	Crossfire maintains a very simple database for extension use. It can	2709	warn "loading facedata from $path\n";
936	currently store anything that can be serialised using Storable, which
937	excludes objects.
938		2710
939	The parameter C<$family> should best start with the name of the extension	2711	my $facedata;
940	using it, it should be unique.	2712	0 < aio_load $path, $facedata
		2713	or die "$path: $!";
941		2714
942	=over 4	2715	$facedata = Coro::Storable::thaw $facedata;
943		2716
944	=item $hashref = cf::db_get $family	2717	$facedata->{version} == 2
		2718	or cf::cleanup "$path: version mismatch, cannot proceed.";
945		2719
946	Return a hashref for use by the extension C<$family>, which can be
947	modified. After modifications, you have to call C<cf::db_dirty> or
948	C<cf::db_sync>.
949
950	=item $value = cf::db_get $family => $key
951
952	Returns a single value from the database
953
954	=item cf::db_put $family => $hashref
955
956	Stores the given family hashref into the database. Updates are delayed, if
957	you want the data to be synced to disk immediately, use C<cf::db_sync>.
958
959	=item cf::db_put $family => $key => $value
960
961	Stores the given C<$value> in the family hash. Updates are delayed, if you
962	want the data to be synced to disk immediately, use C<cf::db_sync>.
963
964	=item cf::db_dirty
965
966	Marks the database as dirty, to be updated at a later time.
967
968	=item cf::db_sync
969
970	Immediately write the database to disk I<if it is dirty>.
971
972	=cut
973
974	{
975	my $db;
976	my $path = cf::localdir . "/database.pst";
977
978	sub db_load() {
979	warn "loading database $path\n";#d# remove later
980	$db = stat $path ? Storable::retrieve $path : { };
981	}	2720	{
		2721	my $faces = $facedata->{faceinfo};
982		2722
983	my $pid;	2723	while (my ($face, $info) = each %$faces) {
		2724	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2725	cf::face::set_visibility $idx, $info->{visibility};
		2726	cf::face::set_magicmap $idx, $info->{magicmap};
		2727	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2728	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
984		2729
985	sub db_save() {	2730	cf::cede_to_tick;
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";
991	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;
993	}
994	}
995
996	my $dirty;
997
998	sub db_sync() {
999	db_save if $dirty;
1000	undef $dirty;
1001	}
1002
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1004	db_sync;
1005	});
1006
1007	sub db_dirty() {
1008	$dirty = 1;
1009	$idle->start;
1010	}
1011
1012	sub db_get($;$) {
1013	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })
1016	}
1017
1018	sub db_put($$;$) {
1019	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];
1021	} else {
1022	$db->{$_[0]} = $_[1];
1023	}
1024	db_dirty;
1025	}
1026
1027	attach_global
1028	prio => 10000,
1029	on_cleanup => sub {
1030	db_sync;
1031	},	2731	}
		2732
		2733	while (my ($face, $info) = each %$faces) {
		2734	next unless $info->{smooth};
		2735	my $idx = cf::face::find $face
		2736	or next;
		2737	if (my $smooth = cf::face::find $info->{smooth}) {
		2738	cf::face::set_smooth $idx, $smooth;
		2739	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2740	} else {
		2741	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2742	}
		2743
		2744	cf::cede_to_tick;
		2745	}
1032	;	2746	}
1033	}
1034		2747
1035	#############################################################################	2748	{
1036	# the server's main()	2749	my $anims = $facedata->{animinfo};
		2750
		2751	while (my ($anim, $info) = each %$anims) {
		2752	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2753	cf::cede_to_tick;
		2754	}
		2755
		2756	cf::anim::invalidate_all; # d'oh
		2757	}
		2758
		2759	{
		2760	# TODO: for gcfclient pleasure, we should give resources
		2761	# that gcfclient doesn't grok a >10000 face index.
		2762	my $res = $facedata->{resource};
		2763	my $enc = JSON::XS->new->utf8->canonical;
		2764
		2765	while (my ($name, $info) = each %$res) {
		2766	my $meta = $enc->encode ({
		2767	name => $name,
		2768	type => $info->{type},
		2769	copyright => $info->{copyright}, #TODO#
		2770	});
		2771	my $data = pack "(w/a*)*", $meta, $info->{data};
		2772	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2773
		2774	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2775	cf::face::set_type $idx, 1;
		2776	cf::face::set_data $idx, 0, $data, $chk;
		2777
		2778	cf::cede_to_tick;
		2779	}
		2780	}
		2781
		2782	1
		2783	}
		2784
		2785	sub reload_regions {
		2786	load_resource_file "$MAPDIR/regions"
		2787	or die "unable to load regions file\n";
		2788	}
		2789
		2790	sub reload_facedata {
		2791	load_facedata "$DATADIR/facedata"
		2792	or die "unable to load facedata\n";
		2793	}
		2794
		2795	sub reload_archetypes {
		2796	load_resource_file "$DATADIR/archetypes"
		2797	or die "unable to load archetypes\n";
		2798	#d# NEED to laod twice to resolve forward references
		2799	# this really needs to be done in an extra post-pass
		2800	# (which needs to be synchronous, so solve it differently)
		2801	load_resource_file "$DATADIR/archetypes"
		2802	or die "unable to load archetypes\n";
		2803	}
		2804
		2805	sub reload_treasures {
		2806	load_resource_file "$DATADIR/treasures"
		2807	or die "unable to load treasurelists\n";
		2808	}
		2809
		2810	sub reload_resources {
		2811	warn "reloading resource files...\n";
		2812
		2813	reload_regions;
		2814	reload_facedata;
		2815	#reload_archetypes;#d#
		2816	reload_archetypes;
		2817	reload_treasures;
		2818
		2819	warn "finished reloading resource files\n";
		2820	}
		2821
		2822	sub init {
		2823	reload_resources;
		2824	}
1037		2825
1038	sub cfg_load {	2826	sub cfg_load {
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2827	open my $fh, "<:utf8", "$CONFDIR/config"
1040	or return;	2828	or return;
1041		2829
1042	local $/;	2830	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	2831	*CFG = YAML::Syck::Load <$fh>;
		2832
		2833	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2834
		2835	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2836	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2837
		2838	if (exists $CFG{mlockall}) {
		2839	eval {
		2840	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2841	and die "WARNING: m(un)lockall failed: $!\n";
		2842	};
		2843	warn $@ if $@;
		2844	}
1044	}	2845	}
1045		2846
1046	sub main {	2847	sub main {
		2848	# we must not ever block the main coroutine
		2849	local $Coro::idle = sub {
		2850	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2851	(async {
		2852	Event::one_event;
		2853	})->prio (Coro::PRIO_MAX);
		2854	};
		2855
1047	cfg_load;	2856	cfg_load;
1048	db_load;	2857	db_init;
1049	load_extensions;	2858	load_extensions;
		2859
		2860	$TICK_WATCHER->start;
1050	Event::loop;	2861	Event::loop;
1051	}	2862	}
1052		2863
1053	#############################################################################	2864	#############################################################################
1054	# initialisation	2865	# initialisation and cleanup
1055		2866
1056	sub _perl_reload(&) {	2867	# install some emergency cleanup handlers
		2868	BEGIN {
		2869	for my $signal (qw(INT HUP TERM)) {
		2870	Event->signal (
		2871	reentrant => 0,
		2872	data => WF_AUTOCANCEL,
		2873	signal => $signal,
		2874	prio => 0,
		2875	cb => sub {
		2876	cf::cleanup "SIG$signal";
		2877	},
		2878	);
		2879	}
		2880	}
		2881
		2882	sub write_runtime {
		2883	my $runtime = "$LOCALDIR/runtime";
		2884
		2885	# first touch the runtime file to show we are still running:
		2886	# the fsync below can take a very very long time.
		2887
		2888	IO::AIO::aio_utime $runtime, undef, undef;
		2889
		2890	my $guard = cf::lock_acquire "write_runtime";
		2891
		2892	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2893	or return;
		2894
		2895	my $value = $cf::RUNTIME + 90 + 10;
		2896	# 10 is the runtime save interval, for a monotonic clock
		2897	# 60 allows for the watchdog to kill the server.
		2898
		2899	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2900	and return;
		2901
		2902	# always fsync - this file is important
		2903	aio_fsync $fh
		2904	and return;
		2905
		2906	# touch it again to show we are up-to-date
		2907	aio_utime $fh, undef, undef;
		2908
		2909	close $fh
		2910	or return;
		2911
		2912	aio_rename "$runtime~", $runtime
		2913	and return;
		2914
		2915	warn "runtime file written.\n";
		2916
		2917	1
		2918	}
		2919
		2920	sub emergency_save() {
		2921	my $freeze_guard = cf::freeze_mainloop;
		2922
		2923	warn "enter emergency perl save\n";
		2924
		2925	cf::sync_job {
		2926	# use a peculiar iteration method to avoid tripping on perl
		2927	# refcount bugs in for. also avoids problems with players
		2928	# and maps saved/destroyed asynchronously.
		2929	warn "begin emergency player save\n";
		2930	for my $login (keys %cf::PLAYER) {
		2931	my $pl = $cf::PLAYER{$login} or next;
		2932	$pl->valid or next;
		2933	$pl->save;
		2934	}
		2935	warn "end emergency player save\n";
		2936
		2937	warn "begin emergency map save\n";
		2938	for my $path (keys %cf::MAP) {
		2939	my $map = $cf::MAP{$path} or next;
		2940	$map->valid or next;
		2941	$map->save;
		2942	}
		2943	warn "end emergency map save\n";
		2944
		2945	warn "begin emergency database checkpoint\n";
		2946	BDB::db_env_txn_checkpoint $DB_ENV;
		2947	warn "end emergency database checkpoint\n";
		2948	};
		2949
		2950	warn "leave emergency perl save\n";
		2951	}
		2952
		2953	sub post_cleanup {
1057	my ($msg) = @_;	2954	my ($make_core) = @_;
1058		2955
1059	$msg->("reloading...");	2956	warn Carp::longmess "post_cleanup backtrace"
		2957	if $make_core;
		2958	}
1060		2959
1061	eval {	2960	sub do_reload_perl() {
1062	# cancel all watchers	2961	# can/must only be called in main
		2962	if ($Coro::current != $Coro::main) {
		2963	warn "can only reload from main coroutine";
		2964	return;
		2965	}
		2966
		2967	warn "reloading...";
		2968
		2969	warn "entering sync_job";
		2970
		2971	cf::sync_job {
		2972	cf::write_runtime; # external watchdog should not bark
		2973	cf::emergency_save;
		2974	cf::write_runtime; # external watchdog should not bark
		2975
		2976	warn "syncing database to disk";
		2977	BDB::db_env_txn_checkpoint $DB_ENV;
		2978
		2979	# if anything goes wrong in here, we should simply crash as we already saved
		2980
		2981	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	2982	for (Event::all_watchers) {
		2983	$_->cancel if $_->data & WF_AUTOCANCEL;
		2984	}
1064		2985
1065	# unload all extensions	2986	warn "flushing outstanding aio requests";
1066	for (@exts) {	2987	for (;;) {
1067	$msg->("unloading <$_>");	2988	BDB::flush;
1068	unload_extension $_;	2989	IO::AIO::flush;
		2990	Coro::cede;
		2991	last unless IO::AIO::nreqs || BDB::nreqs;
		2992	warn "iterate...";
		2993	}
		2994
		2995	++$RELOAD;
		2996
		2997	warn "cancelling all extension coros";
		2998	$_->cancel for values %EXT_CORO;
		2999	%EXT_CORO = ();
		3000
		3001	warn "removing commands";
		3002	%COMMAND = ();
		3003
		3004	warn "removing ext/exti commands";
		3005	%EXTCMD = ();
		3006	%EXTICMD = ();
		3007
		3008	warn "unloading/nuking all extensions";
		3009	for my $pkg (@EXTS) {
		3010	warn "... unloading $pkg";
		3011
		3012	if (my $cb = $pkg->can ("unload")) {
		3013	eval {
		3014	$cb->($pkg);
		3015	1
		3016	} or warn "$pkg unloaded, but with errors: $@";
1069	}	3017	}
1070		3018
		3019	warn "... nuking $pkg";
		3020	Symbol::delete_package $pkg;
		3021	}
		3022
1071	# unload all modules loaded from $LIBDIR	3023	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	3024	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3025	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		3026
1075	$msg->("removing <$k>");	3027	warn "... unloading $k";
1076	delete $INC{$k};	3028	delete $INC{$k};
1077		3029
1078	$k =~ s/\.pm$//;	3030	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	3031	$k =~ s/\//::/g;
1080		3032
…		…
1083	}	3035	}
1084		3036
1085	Symbol::delete_package $k;	3037	Symbol::delete_package $k;
1086	}	3038	}
1087		3039
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	3040	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	3041	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3042	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		3043
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	3044	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	3045	delete $INC{"cf.pm"};
		3046	delete $INC{"cf/pod.pm"};
1100		3047
1101	# don't, removes xs symbols, too,	3048	# don't, removes xs symbols, too,
1102	# and global variables created in xs	3049	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	3050	#Symbol::delete_package __PACKAGE__;
1104		3051
1105	# reload cf.pm	3052	warn "unload completed, starting to reload now";
		3053
1106	$msg->("reloading cf.pm");	3054	warn "reloading cf.pm";
1107	require cf;	3055	require cf;
		3056	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		3057
1109	# load config and database again	3058	warn "loading config and database again";
1110	cf::cfg_load;	3059	cf::cfg_load;
1111	cf::db_load;
1112		3060
1113	# load extensions	3061	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	3062	cf::load_extensions;
1116		3063
1117	# reattach attachments to objects	3064	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");	3065	_global_reattach; # objects, sockets
1119	_global_reattach;	3066	warn "reattaching attachments to maps";
		3067	reattach $_ for values %MAP;
		3068	warn "reattaching attachments to players";
		3069	reattach $_ for values %PLAYER;
		3070
		3071	warn "leaving sync_job";
		3072
		3073	1
		3074	} or do {
		3075	warn $@;
		3076	warn "error while reloading, exiting.";
		3077	exit 1;
1120	};	3078	};
1121	$msg->($@) if $@;
1122		3079
1123	$msg->("reloaded");	3080	warn "reloaded";
1124	};	3081	};
1125		3082
1126	sub perl_reload() {	3083	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {	3084
1128	warn $_[0];	3085	sub reload_perl() {
1129	print "$_[0]\n";	3086	# doing reload synchronously and two reloads happen back-to-back,
		3087	# coro crashes during coro_state_free->destroy here.
		3088
		3089	$RELOAD_WATCHER ||= Event->timer (
		3090	reentrant => 0,
		3091	after => 0,
		3092	data => WF_AUTOCANCEL,
		3093	cb => sub {
		3094	do_reload_perl;
		3095	undef $RELOAD_WATCHER;
		3096	},
1130	};	3097	);
1131	}	3098	}
1132		3099
1133	register_command "perl-reload", 0, sub {	3100	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	3101	my ($who, $arg) = @_;
1135		3102
1136	if ($who->flag (FLAG_WIZ)) {	3103	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	3104	$who->message ("reloading server.");
1138	warn $_[0];	3105	async { reload_perl };
1139	$who->message ($_[0]);	3106	}
		3107	};
		3108
		3109	unshift @INC, $LIBDIR;
		3110
		3111	my $bug_warning = 0;
		3112
		3113	our @WAIT_FOR_TICK;
		3114	our @WAIT_FOR_TICK_BEGIN;
		3115
		3116	sub wait_for_tick {
		3117	return unless $TICK_WATCHER->is_active;
		3118	return if $Coro::current == $Coro::main;
		3119
		3120	my $signal = new Coro::Signal;
		3121	push @WAIT_FOR_TICK, $signal;
		3122	$signal->wait;
		3123	}
		3124
		3125	sub wait_for_tick_begin {
		3126	return unless $TICK_WATCHER->is_active;
		3127	return if $Coro::current == $Coro::main;
		3128
		3129	my $signal = new Coro::Signal;
		3130	push @WAIT_FOR_TICK_BEGIN, $signal;
		3131	$signal->wait;
		3132	}
		3133
		3134	my $min = 1e6;#d#
		3135	my $avg = 10;
		3136	$TICK_WATCHER = Event->timer (
		3137	reentrant => 0,
		3138	parked => 1,
		3139	prio => 0,
		3140	at => $NEXT_TICK || $TICK,
		3141	data => WF_AUTOCANCEL,
		3142	cb => sub {
		3143	if ($Coro::current != $Coro::main) {
		3144	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3145	unless ++$bug_warning > 10;
		3146	return;
		3147	}
		3148
		3149	$NOW = $tick_start = Event::time;
		3150
		3151	cf::server_tick; # one server iteration
		3152
		3153	0 && sync_job {#d#
		3154	for(1..10) {
		3155	my $t = Event::time;
		3156	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3157	or die;
		3158
		3159	$map->width (50);
		3160	$map->height (50);
		3161	$map->alloc;
		3162	$map->_load_objects ("/tmp/x.map", 1);
		3163	my $t = Event::time - $t;
		3164
		3165	#next unless $t < 0.0013;#d#
		3166	if ($t < $min) {
		3167	$min = $t;
		3168	}
		3169	$avg = $avg * 0.99 + $t * 0.01;
		3170	}
		3171	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3172	exit 0;
		3173	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1140	};	3174	};
1141	}
1142	};
1143		3175
1144	register "<global>", __PACKAGE__;	3176	$RUNTIME += $TICK;
1145
1146	unshift @INC, $LIBDIR;
1147
1148	$TICK_WATCHER = Event->timer (
1149	prio => 1,
1150	at => $NEXT_TICK || 1,
1151	cb => sub {
1152	cf::server_tick; # one server iteration
1153
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	3177	$NEXT_TICK += $TICK;
1156		3178
		3179	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3180	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3181	Coro::async_pool {
		3182	write_runtime
		3183	or warn "ERROR: unable to write runtime file: $!";
		3184	};
		3185	}
		3186
		3187	# my $AFTER = Event::time;
		3188	# warn $AFTER - $NOW;#d#
		3189
		3190	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3191	$sig->send;
		3192	}
		3193	while (my $sig = shift @WAIT_FOR_TICK) {
		3194	$sig->send;
		3195	}
		3196
		3197	$NOW = Event::time;
		3198
1157	# if we are delayed by four ticks, skip them all	3199	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3200	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1159		3201
1160	$TICK_WATCHER->at ($NEXT_TICK);	3202	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	3203	$TICK_WATCHER->start;
		3204
		3205	$LOAD = ($NOW - $tick_start) / $TICK;
		3206	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3207
		3208	_post_tick;
		3209
		3210
1162	},	3211	},
1163	);	3212	);
1164		3213
		3214	{
		3215	BDB::max_poll_time $TICK * 0.1;
		3216	$BDB_POLL_WATCHER = Event->io (
		3217	reentrant => 0,
		3218	fd => BDB::poll_fileno,
		3219	poll => 'r',
		3220	prio => 0,
		3221	data => WF_AUTOCANCEL,
		3222	cb => \&BDB::poll_cb,
		3223	);
		3224	BDB::min_parallel 8;
		3225
		3226	BDB::set_sync_prepare {
		3227	my $status;
		3228	my $current = $Coro::current;
		3229	(
		3230	sub {
		3231	$status = $!;
		3232	$current->ready; undef $current;
		3233	},
		3234	sub {
		3235	Coro::schedule while defined $current;
		3236	$! = $status;
		3237	},
		3238	)
		3239	};
		3240
		3241	unless ($DB_ENV) {
		3242	$DB_ENV = BDB::db_env_create;
		3243
		3244	cf::sync_job {
		3245	eval {
		3246	BDB::db_env_open
		3247	$DB_ENV,
		3248	$BDBDIR,
		3249	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3250	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3251	0666;
		3252
		3253	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3254
		3255	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3256	$DB_ENV->set_lk_detect;
		3257	};
		3258
		3259	cf::cleanup "db_env_open(db): $@" if $@;
		3260	};
		3261	}
		3262	}
		3263
		3264	{
		3265	IO::AIO::min_parallel 8;
		3266
		3267	undef $Coro::AIO::WATCHER;
		3268	IO::AIO::max_poll_time $TICK * 0.1;
		3269	$AIO_POLL_WATCHER = Event->io (
		3270	reentrant => 0,
		3271	data => WF_AUTOCANCEL,
		3272	fd => IO::AIO::poll_fileno,
		3273	poll => 'r',
		3274	prio => 6,
		3275	cb => \&IO::AIO::poll_cb,
		3276	);
		3277	}
		3278
		3279	my $_log_backtrace;
		3280
		3281	sub _log_backtrace {
		3282	my ($msg, @addr) = @_;
		3283
		3284	$msg =~ s/\n//;
		3285
		3286	# limit the # of concurrent backtraces
		3287	if ($_log_backtrace < 2) {
		3288	++$_log_backtrace;
		3289	async {
		3290	my @bt = fork_call {
		3291	@addr = map { sprintf "%x", $_ } @addr;
		3292	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3293	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3294	or die "addr2line: $!";
		3295
		3296	my @funcs;
		3297	my @res = <$fh>;
		3298	chomp for @res;
		3299	while (@res) {
		3300	my ($func, $line) = splice @res, 0, 2, ();
		3301	push @funcs, "[$func] $line";
		3302	}
		3303
		3304	@funcs
		3305	};
		3306
		3307	LOG llevInfo, "[ABT] $msg\n";
		3308	LOG llevInfo, "[ABT] $_\n" for @bt;
		3309	--$_log_backtrace;
		3310	};
		3311	} else {
		3312	LOG llevInfo, "[ABT] $msg\n";
		3313	LOG llevInfo, "[ABT] [suppressed]\n";
		3314	}
		3315	}
		3316
		3317	# load additional modules
		3318	use cf::pod;
		3319
		3320	END { cf::emergency_save }
		3321
1165	1	3322	1
1166		3323

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