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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 1.319 by root, Tue Jul 24 15:56:45 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.
		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
55		177
56	=back	178	=back
57		179
58	=cut	180	=cut
59		181
60	BEGIN {	182	BEGIN {
61	*CORE::GLOBAL::warn = sub {	183	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	184	my $msg = join "", @_;
		185
63	$msg .= "\n"	186	$msg .= "\n"
64	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
65		188
66	print STDERR "cfperl: $msg";	189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		190
		191	utf8::encode $msg;
67	LOG llevError, "cfperl: $msg";	192	LOG llevError, $msg;
68	};	193	};
69	}	194	}
70		195
		196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
72		203
73	# we bless all objects into (empty) derived classes to force a method lookup	204	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	205	# 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)) {	206	for my $pkg (qw(
		207	cf::global cf::attachable
		208	cf::object cf::object::player
		209	cf::client cf::player
		210	cf::arch cf::living
		211	cf::map cf::party cf::region
		212	)) {
76	no strict 'refs';	213	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	214	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	215	}
79		216
80	$Event::DIED = sub {	217	$Event::DIED = sub {
81	warn "error in event callback: @_";	218	warn "error in event callback: @_";
82	};	219	};
83		220
84	my %ext_pkg;	221	#############################################################################
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		222
90	=head2 UTILITY FUNCTIONS	223	=head2 UTILITY FUNCTIONS
91		224
92	=over 4	225	=over 4
93		226
94	=cut	227	=item dumpval $ref
95		228
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	229	=cut
		230
		231	sub dumpval {
		232	eval {
		233	local $SIG{__DIE__};
		234	my $d;
		235	if (1) {
		236	$d = new Data::Dumper([$_[0]], ["*var"]);
		237	$d->Terse(1);
		238	$d->Indent(2);
		239	$d->Quotekeys(0);
		240	$d->Useqq(1);
		241	#$d->Bless(...);
		242	$d->Seen($_[1]) if @_ > 1;
		243	$d = $d->Dump();
		244	}
		245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		246	$d
		247	} || "[unable to dump $_[0]: '$@']";
		248	}
97		249
98	=item $ref = cf::from_json $json	250	=item $ref = cf::from_json $json
99		251
100	Converts a JSON string into the corresponding perl data structure.	252	Converts a JSON string into the corresponding perl data structure.
101		253
102	=cut
103
104	sub from_json($) {
105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
106	JSON::Syck::Load $_[0]
107	}
108
109	=item $json = cf::to_json $ref	254	=item $json = cf::to_json $ref
110		255
111	Converts a perl data structure into its JSON representation.	256	Converts a perl data structure into its JSON representation.
112		257
113	=cut	258	=cut
114		259
115	sub to_json($) {	260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	261
117	JSON::Syck::Dump $_[0]	262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
		264
		265	=item cf::lock_wait $string
		266
		267	Wait until the given lock is available. See cf::lock_acquire.
		268
		269	=item my $lock = cf::lock_acquire $string
		270
		271	Wait until the given lock is available and then acquires it and returns
		272	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		273	for example when the coroutine gets canceled), the lock is automatically
		274	returned.
		275
		276	Lock names should begin with a unique identifier (for example, cf::map::find
		277	uses map_find and cf::map::load uses map_load).
		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
		283	=cut
		284
		285	our %LOCK;
		286
		287	sub lock_wait($) {
		288	my ($key) = @_;
		289
		290	# wait for lock, if any
		291	while ($LOCK{$key}) {
		292	push @{ $LOCK{$key} }, $Coro::current;
		293	Coro::schedule;
		294	}
		295	}
		296
		297	sub lock_acquire($) {
		298	my ($key) = @_;
		299
		300	# wait, to be sure we are not locked
		301	lock_wait $key;
		302
		303	$LOCK{$key} = [];
		304
		305	Coro::guard {
		306	# wake up all waiters, to be on the safe side
		307	$_->ready for @{ delete $LOCK{$key} };
		308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
		315	}
		316
		317	sub freeze_mainloop {
		318	return unless $TICK_WATCHER->is_active;
		319
		320	my $guard = Coro::guard {
		321	$TICK_WATCHER->start;
		322	};
		323	$TICK_WATCHER->stop;
		324	$guard
		325	}
		326
		327	=item cf::get_slot $time[, $priority[, $name]]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	The optional C<$name> can be used to identify the job to run. It might be
		334	used for statistical purposes and should identify the same time-class.
		335
		336	Useful for short background jobs.
		337
		338	=cut
		339
		340	our @SLOT_QUEUE;
		341	our $SLOT_QUEUE;
		342
		343	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		344	$SLOT_QUEUE = Coro::async {
		345	my $signal = new Coro::Signal;
		346
		347	while () {
		348	next_job:
		349	my $avail = cf::till_tick;
		350	if ($avail > 0.01) {
		351	for (0 .. $#SLOT_QUEUE) {
		352	if ($SLOT_QUEUE[$_][0] < $avail) {
		353	my $job = splice @SLOT_QUEUE, $_, 1, ();
		354	$job->[2]->send;
		355	Coro::cede;
		356	goto next_job;
		357	}
		358	}
		359	}
		360
		361	if (@SLOT_QUEUE) {
		362	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		363	push @cf::WAIT_FOR_TICK, $signal;
		364	$signal->wait;
		365	} else {
		366	Coro::schedule;
		367	}
		368	}
		369	};
		370
		371	sub get_slot($;$$) {
		372	my ($time, $pri, $name) = @_;
		373
		374	$time = $TICK * .6 if $time > $TICK * .6;
		375	my $sig = new Coro::Signal;
		376
		377	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		378	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		379	$SLOT_QUEUE->ready;
		380	$sig->wait;
		381	}
		382
		383	=item cf::async { BLOCK }
		384
		385	Currently the same as Coro::async_pool, meaning you cannot use
		386	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		387	thing you are allowed to do is call C<prio> on it.
		388
		389	=cut
		390
		391	BEGIN { *async = \&Coro::async_pool }
		392
		393	=item cf::sync_job { BLOCK }
		394
		395	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		396	is always able to handle events or runnable, as Crossfire TRT is only
		397	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		398	acceptable.
		399
		400	If it must be done, put the blocking parts into C<sync_job>. This will run
		401	the given BLOCK in another coroutine while waiting for the result. The
		402	server will be frozen during this time, so the block should either finish
		403	fast or be very important.
		404
		405	=cut
		406
		407	sub sync_job(&) {
		408	my ($job) = @_;
		409
		410	if ($Coro::current == $Coro::main) {
		411	my $time = Event::time;
		412
		413	# this is the main coro, too bad, we have to block
		414	# till the operation succeeds, freezing the server :/
		415
		416	# TODO: use suspend/resume instead
		417	# (but this is cancel-safe)
		418	my $freeze_guard = freeze_mainloop;
		419
		420	my $busy = 1;
		421	my @res;
		422
		423	(async {
		424	@res = eval { $job->() };
		425	warn $@ if $@;
		426	undef $busy;
		427	})->prio (Coro::PRIO_MAX);
		428
		429	while ($busy) {
		430	Coro::cede or Event::one_event;
		431	}
		432
		433	$time = Event::time - $time;
		434
		435	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		436	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		437
		438	$tick_start += $time; # do not account sync jobs to server load
		439
		440	wantarray ? @res : $res[0]
		441	} else {
		442	# we are in another coroutine, how wonderful, everything just works
		443
		444	$job->()
		445	}
		446	}
		447
		448	=item $coro = cf::async_ext { BLOCK }
		449
		450	Like async, but this coro is automatically being canceled when the
		451	extension calling this is being unloaded.
		452
		453	=cut
		454
		455	sub async_ext(&) {
		456	my $cb = shift;
		457
		458	my $coro = &Coro::async ($cb);
		459
		460	$coro->on_destroy (sub {
		461	delete $EXT_CORO{$coro+0};
		462	});
		463	$EXT_CORO{$coro+0} = $coro;
		464
		465	$coro
		466	}
		467
		468	=item fork_call { }, $args
		469
		470	Executes the given code block with the given arguments in a seperate
		471	process, returning the results. Everything must be serialisable with
		472	Coro::Storable. May, of course, block. Note that the executed sub may
		473	never block itself or use any form of Event handling.
		474
		475	=cut
		476
		477	sub _store_scalar {
		478	open my $fh, ">", \my $buf
		479	or die "fork_call: cannot open fh-to-buf in child : $!";
		480	Storable::store_fd $_[0], $fh;
		481	close $fh;
		482
		483	$buf
		484	}
		485
		486	sub fork_call(&@) {
		487	my ($cb, @args) = @_;
		488
		489	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		490	# or die "socketpair: $!";
		491	pipe my $fh1, my $fh2
		492	or die "pipe: $!";
		493
		494	if (my $pid = fork) {
		495	close $fh2;
		496
		497	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		498	warn "pst<$res>" unless $res =~ /^pst/;
		499	$res = Coro::Storable::thaw $res;
		500
		501	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		502
		503	Carp::confess $$res unless "ARRAY" eq ref $res;
		504
		505	return wantarray ? @$res : $res->[-1];
		506	} else {
		507	reset_signals;
		508	local $SIG{__WARN__};
		509	local $SIG{__DIE__};
		510	# just in case, this hack effectively disables event
		511	# in the child. cleaner and slower would be canceling all watchers,
		512	# but this works for the time being.
		513	local $Coro::idle;
		514	$Coro::current->prio (Coro::PRIO_MAX);
		515
		516	eval {
		517	close $fh1;
		518
		519	my @res = eval { $cb->(@args) };
		520
		521	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		522	close $fh2;
		523	};
		524
		525	warn $@ if $@;
		526	_exit 0;
		527	}
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=cut
		540
		541	our $DB;
		542
		543	sub db_init {
		544	unless ($DB) {
		545	$DB = BDB::db_create $DB_ENV;
		546
		547	cf::sync_job {
		548	eval {
		549	$DB->set_flags (BDB::CHKSUM);
		550
		551	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		552	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		553	cf::cleanup "db_open(db): $!" if $!;
		554	};
		555	cf::cleanup "db_open(db): $@" if $@;
		556	};
		557	}
		558	}
		559
		560	sub db_get($$) {
		561	my $key = "$_[0]/$_[1]";
		562
		563	cf::sync_job {
		564	BDB::db_get $DB, undef, $key, my $data;
		565
		566	$! ? ()
		567	: $data
		568	}
		569	}
		570
		571	sub db_put($$$) {
		572	BDB::dbreq_pri 4;
		573	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		574	}
		575
		576	=item cf::cache $id => [$paths...], $processversion => $process
		577
		578	Generic caching function that returns the value of the resource $id,
		579	caching and regenerating as required.
		580
		581	This function can block.
		582
		583	=cut
		584
		585	sub cache {
		586	my ($id, $src, $processversion, $process) = @_;
		587
		588	my $meta =
		589	join "\x00",
		590	$processversion,
		591	map {
		592	aio_stat $_
		593	and Carp::croak "$_: $!";
		594
		595	($_, (stat _)[7,9])
		596	} @$src;
		597
		598	my $dbmeta = db_get cache => "$id/meta";
		599	if ($dbmeta ne $meta) {
		600	# changed, we may need to process
		601
		602	my @data;
		603	my $md5;
		604
		605	for (0 .. $#$src) {
		606	0 <= aio_load $src->[$_], $data[$_]
		607	or Carp::croak "$src->[$_]: $!";
		608	}
		609
		610	# if processing is expensive, check
		611	# checksum first
		612	if (1) {
		613	$md5 =
		614	join "\x00",
		615	$processversion,
		616	map {
		617	Coro::cede;
		618	($src->[$_], Digest::MD5::md5_hex $data[$_])
		619	} 0.. $#$src;
		620
		621
		622	my $dbmd5 = db_get cache => "$id/md5";
		623	if ($dbmd5 eq $md5) {
		624	db_put cache => "$id/meta", $meta;
		625
		626	return db_get cache => "$id/data";
		627	}
		628	}
		629
		630	my $t1 = Time::HiRes::time;
		631	my $data = $process->(\@data);
		632	my $t2 = Time::HiRes::time;
		633
		634	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		635
		636	db_put cache => "$id/data", $data;
		637	db_put cache => "$id/md5" , $md5;
		638	db_put cache => "$id/meta", $meta;
		639
		640	return $data;
		641	}
		642
		643	db_get cache => "$id/data"
		644	}
		645
		646	=item cf::datalog type => key => value, ...
		647
		648	Log a datalog packet of the given type with the given key-value pairs.
		649
		650	=cut
		651
		652	sub datalog($@) {
		653	my ($type, %kv) = @_;
		654	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
118	}	655	}
119		656
120	=back	657	=back
121		658
122	=cut	659	=cut
123		660
124	#############################################################################	661	#############################################################################
125		662
126	=head2 EVENTS AND OBJECT ATTACHMENTS	663	=head2 ATTACHABLE OBJECTS
		664
		665	Many objects in crossfire are so-called attachable objects. That means you can
		666	attach callbacks/event handlers (a collection of which is called an "attachment")
		667	to it. All such attachable objects support the following methods.
		668
		669	In the following description, CLASS can be any of C<global>, C<object>
		670	C<player>, C<client> or C<map> (i.e. the attachable objects in
		671	Crossfire TRT).
127		672
128	=over 4	673	=over 4
129		674
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...)	675	=item $attachable->attach ($attachment, key => $value...)
143		676
144	=item $map->detach ($attachment)	677	=item $attachable->detach ($attachment)
145		678
146	Attach/detach a pre-registered attachment to a map.	679	Attach/detach a pre-registered attachment to a specific object and give it
		680	the specified key/value pairs as arguments.
147		681
148	=item $bool = $object->attached ($name)	682	Example, attach a minesweeper attachment to the given object, making it a
		683	10x10 minesweeper game:
149		684
150	=item $bool = $player->attached ($name)	685	$obj->attach (minesweeper => width => 10, height => 10);
151		686
152	=item $bool = $map->attached ($name)	687	=item $bool = $attachable->attached ($name)
153		688
154	Checks wether the named attachment is currently attached to the object.	689	Checks wether the named attachment is currently attached to the object.
155		690
156	=item cf::attach_global ...	691	=item cf::CLASS->attach ...
157		692
158	Attach handlers for global events.	693	=item cf::CLASS->detach ...
159		694
160	This and all following C<attach_*>-functions expect any number of the	695	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	696	CLASS. See the next function for an explanation of its arguments.
		697
		698	You can attach to global events by using the C<cf::global> class.
		699
		700	Example, log all player logins:
		701
		702	cf::player->attach (
		703	on_login => sub {
		704	my ($pl) = @_;
		705	...
		706	},
		707	);
		708
		709	Example, attach to the jeweler skill:
		710
		711	cf::object->attach (
		712	type => cf::SKILL,
		713	subtype => cf::SK_JEWELER,
		714	on_use_skill => sub {
		715	my ($sk, $ob, $part, $dir, $msg) = @_;
		716	...
		717	},
		718	);
		719
		720	=item cf::CLASS::attachment $name, ...
		721
		722	Register an attachment by C<$name> through which attachable objects of the
		723	given CLASS can refer to this attachment.
		724
		725	Some classes such as crossfire maps and objects can specify attachments
		726	that are attached at load/instantiate time, thus the need for a name.
		727
		728	These calls expect any number of the following handler/hook descriptions:
162		729
163	=over 4	730	=over 4
164		731
165	=item prio => $number	732	=item prio => $number
166		733
…		…
168	by another C<prio> setting). Lower priority handlers get executed	735	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	736	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	737	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	738	unless you know what you are doing.
172		739
		740	=item type => $type
		741
		742	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		743	given type of objects only (the additional parameter C<subtype> can be
		744	used to further limit to the given subtype).
		745
173	=item on_I<event> => \&cb	746	=item on_I<event> => \&cb
174		747
175	Call the given code reference whenever the named event happens (event is	748	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	749	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	750	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	759	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	760	object/class are recognised.
188		761
189	=back	762	=back
190		763
191	=item cf::attach_to_type $object_type, $subtype, ...	764	Example, define an attachment called "sockpuppet" that calls the given
		765	event handler when a monster attacks:
192		766
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	767	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	768	on_skill_attack => sub {
195	type.	769	my ($self, $victim) = @_;
196		770	...
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	}	771	}
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	772	}
418	}
419		773
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	774	=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		775
446	Just because you have a perl object does not mean that the corresponding	776	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	777	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	778	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	779	can be used to test for existence of the C object part without causing an
450	exception.	780	exception.
451		781
		782	=cut
		783
		784	# the following variables are defined in .xs and must not be re-created
		785	our @CB_GLOBAL = (); # registry for all global events
		786	our @CB_ATTACHABLE = (); # registry for all attachables
		787	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		788	our @CB_PLAYER = ();
		789	our @CB_CLIENT = ();
		790	our @CB_TYPE = (); # registry for type (cf-object class) based events
		791	our @CB_MAP = ();
		792
		793	my %attachment;
		794
		795	sub cf::attachable::thawer_merge {
		796	# simply override everything except _meta
		797	local $_[0]{_meta};
		798	%{$_[0]} = %{$_[1]};
		799	}
		800
		801	sub _attach_cb($$$$) {
		802	my ($registry, $event, $prio, $cb) = @_;
		803
		804	use sort 'stable';
		805
		806	$cb = [$prio, $cb];
		807
		808	@{$registry->[$event]} = sort
		809	{ $a->[0] cmp $b->[0] }
		810	@{$registry->[$event] || []}, $cb;
		811	}
		812
		813	# hack
		814	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		815
		816	# attach handles attaching event callbacks
		817	# the only thing the caller has to do is pass the correct
		818	# registry (== where the callback attaches to).
		819	sub _attach {
		820	my ($registry, $klass, @arg) = @_;
		821
		822	my $object_type;
		823	my $prio = 0;
		824	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		825
		826	#TODO: get rid of this hack
		827	if ($attachable_klass{$klass}) {
		828	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		829	}
		830
		831	while (@arg) {
		832	my $type = shift @arg;
		833
		834	if ($type eq "prio") {
		835	$prio = shift @arg;
		836
		837	} elsif ($type eq "type") {
		838	$object_type = shift @arg;
		839	$registry = $CB_TYPE[$object_type] ||= [];
		840
		841	} elsif ($type eq "subtype") {
		842	defined $object_type or Carp::croak "subtype specified without type";
		843	my $object_subtype = shift @arg;
		844	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		845
		846	} elsif ($type eq "package") {
		847	my $pkg = shift @arg;
		848
		849	while (my ($name, $id) = each %cb_id) {
		850	if (my $cb = $pkg->can ($name)) {
		851	_attach_cb $registry, $id, $prio, $cb;
		852	}
		853	}
		854
		855	} elsif (exists $cb_id{$type}) {
		856	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		857
		858	} elsif (ref $type) {
		859	warn "attaching objects not supported, ignoring.\n";
		860
		861	} else {
		862	shift @arg;
		863	warn "attach argument '$type' not supported, ignoring.\n";
		864	}
		865	}
		866	}
		867
		868	sub _object_attach {
		869	my ($obj, $name, %arg) = @_;
		870
		871	return if exists $obj->{_attachment}{$name};
		872
		873	if (my $attach = $attachment{$name}) {
		874	my $registry = $obj->registry;
		875
		876	for (@$attach) {
		877	my ($klass, @attach) = @$_;
		878	_attach $registry, $klass, @attach;
		879	}
		880
		881	$obj->{$name} = \%arg;
		882	} else {
		883	warn "object uses attachment '$name' which is not available, postponing.\n";
		884	}
		885
		886	$obj->{_attachment}{$name} = undef;
		887	}
		888
		889	sub cf::attachable::attach {
		890	if (ref $_[0]) {
		891	_object_attach @_;
		892	} else {
		893	_attach shift->_attach_registry, @_;
		894	}
		895	_recalc_want;
		896	};
		897
		898	# all those should be optimised
		899	sub cf::attachable::detach {
		900	my ($obj, $name) = @_;
		901
		902	if (ref $obj) {
		903	delete $obj->{_attachment}{$name};
		904	reattach ($obj);
		905	} else {
		906	Carp::croak "cannot, currently, detach class attachments";
		907	}
		908	_recalc_want;
		909	};
		910
		911	sub cf::attachable::attached {
		912	my ($obj, $name) = @_;
		913
		914	exists $obj->{_attachment}{$name}
		915	}
		916
		917	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		918	eval "#line " . __LINE__ . " 'cf.pm'
		919	sub cf::\L$klass\E::_attach_registry {
		920	(\\\@CB_$klass, KLASS_$klass)
		921	}
		922
		923	sub cf::\L$klass\E::attachment {
		924	my \$name = shift;
		925
		926	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		927	}
		928	";
		929	die if $@;
		930	}
		931
		932	our $override;
		933	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		934
		935	sub override {
		936	$override = 1;
		937	@INVOKE_RESULTS = (@_);
		938	}
		939
		940	sub do_invoke {
		941	my $event = shift;
		942	my $callbacks = shift;
		943
		944	@INVOKE_RESULTS = ();
		945
		946	local $override;
		947
		948	for (@$callbacks) {
		949	eval { &{$_->[1]} };
		950
		951	if ($@) {
		952	warn "$@";
		953	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		954	override;
		955	}
		956
		957	return 1 if $override;
		958	}
		959
		960	0
		961	}
		962
		963	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		964
		965	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		966
		967	Generate an object-specific event with the given arguments.
		968
		969	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		970	removed in future versions), and there is no public API to access override
		971	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		972
452	=back	973	=back
453		974
454	=cut	975	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		976
460	#############################################################################	977	#############################################################################
461	# object support	978	# object support
		979	#
462		980
463	sub instantiate {	981	sub _can_merge {
464	my ($obj, $data) = @_;	982	my ($ob1, $ob2) = @_;
465		983
466	$data = from_json $data;	984	local $Storable::canonical = 1;
		985	my $fob1 = Storable::freeze $ob1;
		986	my $fob2 = Storable::freeze $ob2;
467		987
468	for (@$data) {	988	$fob1 eq $fob2
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}	989	}
474		990
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	991	sub reattach {
		992	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	993	my ($obj) = @_;
		994
		995	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		996
478	my $registry = $obj->registry;	997	my $registry = $obj->registry;
479		998
480	@$registry = ();	999	@$registry = ();
481		1000
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1001	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		1002
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	1003	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	1004	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	1005	for (@$attach) {
487	my ($klass, @attach) = @$_;	1006	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	1007	_attach $registry, $klass, @attach;
489	}	1008	}
490	} else {	1009	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	1010	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	1011	}
493	}	1012	}
494	}	1013	}
495		1014
496	sub object_freezer_save {	1015	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, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	1016	prio => -1000000,
		1017	on_instantiate => sub {
		1018	my ($obj, $data) = @_;
		1019
		1020	$data = from_json $data;
		1021
		1022	for (@$data) {
		1023	my ($name, $args) = @$_;
		1024
		1025	$obj->attach ($name, %{$args || {} });
		1026	}
		1027	},
		1028	on_reattach => \&reattach,
548	on_clone => sub {	1029	on_clone => sub {
549	my ($src, $dst) = @_;	1030	my ($src, $dst) = @_;
550		1031
551	@{$dst->registry} = @{$src->registry};	1032	@{$dst->registry} = @{$src->registry};
552		1033
553	%$dst = %$src;	1034	%$dst = %$src;
554		1035
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	1036	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	1037	if exists $src->{_attachment};
557	},	1038	},
558	;	1039	);
		1040
		1041	sub object_freezer_save {
		1042	my ($filename, $rdata, $objs) = @_;
		1043
		1044	sync_job {
		1045	if (length $$rdata) {
		1046	warn sprintf "saving %s (%d,%d)\n",
		1047	$filename, length $$rdata, scalar @$objs;
		1048
		1049	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1050	chmod SAVE_MODE, $fh;
		1051	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1052	aio_fsync $fh if $cf::USE_FSYNC;
		1053	close $fh;
		1054
		1055	if (@$objs) {
		1056	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1057	chmod SAVE_MODE, $fh;
		1058	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1059	aio_write $fh, 0, (length $data), $data, 0;
		1060	aio_fsync $fh if $cf::USE_FSYNC;
		1061	close $fh;
		1062	aio_rename "$filename.pst~", "$filename.pst";
		1063	}
		1064	} else {
		1065	aio_unlink "$filename.pst";
		1066	}
		1067
		1068	aio_rename "$filename~", $filename;
		1069	} else {
		1070	warn "FATAL: $filename~: $!\n";
		1071	}
		1072	} else {
		1073	aio_unlink $filename;
		1074	aio_unlink "$filename.pst";
		1075	}
		1076	}
		1077	}
		1078
		1079	sub object_freezer_as_string {
		1080	my ($rdata, $objs) = @_;
		1081
		1082	use Data::Dumper;
		1083
		1084	$$rdata . Dumper $objs
		1085	}
		1086
		1087	sub object_thawer_load {
		1088	my ($filename) = @_;
		1089
		1090	my ($data, $av);
		1091
		1092	(aio_load $filename, $data) >= 0
		1093	or return;
		1094
		1095	unless (aio_stat "$filename.pst") {
		1096	(aio_load "$filename.pst", $av) >= 0
		1097	or return;
		1098	$av = eval { (Storable::thaw $av)->{objs} };
		1099	}
		1100
		1101	warn sprintf "loading %s (%d)\n",
		1102	$filename, length $data, scalar @{$av || []};
		1103	return ($data, $av);
		1104	}
		1105
		1106	=head2 COMMAND CALLBACKS
		1107
		1108	=over 4
		1109
		1110	=cut
559		1111
560	#############################################################################	1112	#############################################################################
561	# old plug-in events	1113	# command handling &c
562		1114
563	sub inject_event {	1115	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		1116
567	my $cb = $hook[$event_code]{$extension}	1117	Register a callback for execution when the client sends the user command
568	or return;	1118	$name.
569		1119
570	&$cb	1120	=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		1121
592	sub register_command {	1122	sub register_command {
593	my ($name, $time, $cb) = @_;	1123	my ($name, $cb) = @_;
594		1124
595	my $caller = caller;	1125	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	1126	#warn "registering command '$name/$time' to '$caller'";
597		1127
598	push @{ $command{$name} }, [$time, $cb, $caller];	1128	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	1129	}
		1130
		1131	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1132
		1133	Register a callback for execution when the client sends an (synchronous)
		1134	extcmd packet. Ext commands will be processed in the order they are
		1135	received by the server, like other user commands. The first argument is
		1136	the logged-in player. Ext commands can only be processed after a player
		1137	has logged in successfully.
		1138
		1139	If the callback returns something, it is sent back as if reply was being
		1140	called.
		1141
		1142	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1143
		1144	Register a callback for execution when the client sends an (asynchronous)
		1145	exticmd packet. Exti commands are processed by the server as soon as they
		1146	are received, i.e. out of order w.r.t. other commands. The first argument
		1147	is a client socket. Exti commands can be received anytime, even before
		1148	log-in.
		1149
		1150	If the callback returns something, it is sent back as if reply was being
		1151	called.
		1152
		1153	=cut
601		1154
602	sub register_extcmd {	1155	sub register_extcmd {
603	my ($name, $cb) = @_;	1156	my ($name, $cb) = @_;
604		1157
605	my $caller = caller;	1158	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	1159	}
610		1160
611	sub register {	1161	sub register_exticmd {
612	my ($base, $pkg) = @_;	1162	my ($name, $cb) = @_;
613		1163
614	#TODO	1164	$EXTICMD{$name} = $cb;
615	}	1165	}
616		1166
617	sub load_extension {	1167	cf::player->attach (
618	my ($path) = @_;	1168	on_command => sub {
		1169	my ($pl, $name, $params) = @_;
619		1170
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1171	my $cb = $COMMAND{$name}
621	my $base = $1;	1172	or return;
622	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";
625		1173
626	warn "loading '$path' into '$pkg'\n";	1174	for my $cmd (@$cb) {
627		1175	$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	}	1176	}
		1177
		1178	cf::override;
671	}	1179	},
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 {	1180	on_extcmd => sub {
706	my ($pl, $buf) = @_;	1181	my ($pl, $buf) = @_;
707		1182
708	my $msg = eval { from_json $buf };	1183	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
709		1184
710	if (ref $msg) {	1185	if (ref $msg) {
		1186	my ($type, $reply, @payload) =
		1187	"ARRAY" eq ref $msg
		1188	? @$msg
		1189	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1190
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1191	if (my $cb = $EXTCMD{$type}) {
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1192	my @reply = $cb->($pl, @payload);
		1193
713	$pl->ext_reply ($msg->{msgid}, %reply);	1194	$pl->ext_reply ($reply, @reply)
714	}	1195	if $reply;
715	}	1196	}
716	} else {	1197	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1198	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
718	}	1199	}
719		1200
720	cf::override;	1201	cf::override;
721	},	1202	},
722	;	1203	);
		1204
		1205	sub load_extensions {
		1206	cf::sync_job {
		1207	my %todo;
		1208
		1209	for my $path (<$LIBDIR/*.ext>) {
		1210	next unless -r $path;
		1211
		1212	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1213	my $base = $1;
		1214	my $pkg = $1;
		1215	$pkg =~ s/[^[:word:]]/_/g;
		1216	$pkg = "ext::$pkg";
		1217
		1218	open my $fh, "<:utf8", $path
		1219	or die "$path: $!";
		1220
		1221	my $source = do { local $/; <$fh> };
		1222
		1223	my %ext = (
		1224	path => $path,
		1225	base => $base,
		1226	pkg => $pkg,
		1227	);
		1228
		1229	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1230	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1231
		1232	$ext{source} =
		1233	"package $pkg; use strict; use utf8;\n"
		1234	. "#line 1 \"$path\"\n{\n"
		1235	. $source
		1236	. "\n};\n1";
		1237
		1238	$todo{$base} = \%ext;
		1239	}
		1240
		1241	my %done;
		1242	while (%todo) {
		1243	my $progress;
		1244
		1245	while (my ($k, $v) = each %todo) {
		1246	for (split /,\s*/, $v->{meta}{depends}) {
		1247	goto skip
		1248	unless exists $done{$_};
		1249	}
		1250
		1251	warn "... loading '$k' into '$v->{pkg}'\n";
		1252
		1253	unless (eval $v->{source}) {
		1254	my $msg = $@ ? "$v->{path}: $@\n"
		1255	: "$v->{base}: extension inactive.\n";
		1256
		1257	if (exists $v->{meta}{mandatory}) {
		1258	warn $msg;
		1259	warn "mandatory extension failed to load, exiting.\n";
		1260	exit 1;
		1261	}
		1262
		1263	warn $msg;
		1264	}
		1265
		1266	$done{$k} = delete $todo{$k};
		1267	push @EXTS, $v->{pkg};
		1268	$progress = 1;
		1269	}
		1270
		1271	skip:
		1272	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1273	unless $progress;
		1274	}
		1275	};
		1276	}
723		1277
724	#############################################################################	1278	#############################################################################
725	# load/save/clean perl data associated with a map
726		1279
727	*cf::mapsupport::on_clean = sub {	1280	=back
		1281
		1282	=head2 CORE EXTENSIONS
		1283
		1284	Functions and methods that extend core crossfire objects.
		1285
		1286	=cut
		1287
		1288	package cf::player;
		1289
		1290	use Coro::AIO;
		1291
		1292	=head3 cf::player
		1293
		1294	=over 4
		1295
		1296	=item cf::player::find $login
		1297
		1298	Returns the given player object, loading it if necessary (might block).
		1299
		1300	=cut
		1301
		1302	sub playerdir($) {
		1303	"$PLAYERDIR/"
		1304	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1305	}
		1306
		1307	sub path($) {
		1308	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1309
		1310	(playerdir $login) . "/playerdata"
		1311	}
		1312
		1313	sub find_active($) {
		1314	$cf::PLAYER{$_[0]}
		1315	and $cf::PLAYER{$_[0]}->active
		1316	and $cf::PLAYER{$_[0]}
		1317	}
		1318
		1319	sub exists($) {
		1320	my ($login) = @_;
		1321
		1322	$cf::PLAYER{$login}
		1323	or cf::sync_job { !aio_stat path $login }
		1324	}
		1325
		1326	sub find($) {
		1327	return $cf::PLAYER{$_[0]} || do {
		1328	my $login = $_[0];
		1329
		1330	my $guard = cf::lock_acquire "user_find:$login";
		1331
		1332	$cf::PLAYER{$_[0]} || do {
		1333	# rename old playerfiles to new ones
		1334	#TODO: remove when no longer required
		1335	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1336	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1337	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1338	aio_unlink +(playerdir $login) . "/$login.pl";
		1339
		1340	my $pl = load_pl path $login
		1341	or return;
		1342	$cf::PLAYER{$login} = $pl
		1343	}
		1344	}
		1345	}
		1346
		1347	sub save($) {
		1348	my ($pl) = @_;
		1349
		1350	return if $pl->{deny_save};
		1351
		1352	my $path = path $pl;
		1353	my $guard = cf::lock_acquire "user_save:$path";
		1354
		1355	return if $pl->{deny_save};
		1356
		1357	aio_mkdir playerdir $pl, 0770;
		1358	$pl->{last_save} = $cf::RUNTIME;
		1359
		1360	$pl->save_pl ($path);
		1361	Coro::cede;
		1362	}
		1363
		1364	sub new($) {
		1365	my ($login) = @_;
		1366
		1367	my $self = create;
		1368
		1369	$self->ob->name ($login);
		1370	$self->{deny_save} = 1;
		1371
		1372	$cf::PLAYER{$login} = $self;
		1373
		1374	$self
		1375	}
		1376
		1377	=item $pl->quit_character
		1378
		1379	Nukes the player without looking back. If logged in, the connection will
		1380	be destroyed. May block for a long time.
		1381
		1382	=cut
		1383
		1384	sub quit_character {
		1385	my ($pl) = @_;
		1386
		1387	my $name = $pl->ob->name;
		1388
		1389	$pl->{deny_save} = 1;
		1390	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1391
		1392	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1393	$pl->deactivate;
		1394	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1395	$pl->ns->destroy if $pl->ns;
		1396
		1397	my $path = playerdir $pl;
		1398	my $temp = "$path~$cf::RUNTIME~deleting~";
		1399	aio_rename $path, $temp;
		1400	delete $cf::PLAYER{$pl->ob->name};
		1401	$pl->destroy;
		1402
		1403	my $prefix = qr<^~\Q$name\E/>;
		1404
		1405	# nuke player maps
		1406	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1407
		1408	IO::AIO::aio_rmtree $temp;
		1409	}
		1410
		1411	=item $pl->kick
		1412
		1413	Kicks a player out of the game. This destroys the connection.
		1414
		1415	=cut
		1416
		1417	sub kick {
		1418	my ($pl, $kicker) = @_;
		1419
		1420	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1421	$pl->killer ("kicked");
		1422	$pl->ns->destroy;
		1423	}
		1424
		1425	=item cf::player::list_logins
		1426
		1427	Returns am arrayref of all valid playernames in the system, can take a
		1428	while and may block, so not sync_job-capable, ever.
		1429
		1430	=cut
		1431
		1432	sub list_logins {
		1433	my $dirs = aio_readdir $PLAYERDIR
		1434	or return [];
		1435
		1436	my @logins;
		1437
		1438	for my $login (@$dirs) {
		1439	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1440	aio_read $fh, 0, 512, my $buf, 0 or next;
		1441	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1442
		1443	utf8::decode $login;
		1444	push @logins, $login;
		1445	}
		1446
		1447	\@logins
		1448	}
		1449
		1450	=item $player->maps
		1451
		1452	Returns an arrayref of map paths that are private for this
		1453	player. May block.
		1454
		1455	=cut
		1456
		1457	sub maps($) {
		1458	my ($pl) = @_;
		1459
		1460	$pl = ref $pl ? $pl->ob->name : $pl;
		1461
		1462	my $files = aio_readdir playerdir $pl
		1463	or return;
		1464
		1465	my @paths;
		1466
		1467	for (@$files) {
		1468	utf8::decode $_;
		1469	next if /\.(?:pl|pst)$/;
		1470	next unless /^$PATH_SEP/o;
		1471
		1472	push @paths, cf::map::normalise "~$pl/$_";
		1473	}
		1474
		1475	\@paths
		1476	}
		1477
		1478	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1479
		1480	Expand crossfire pod fragments into protocol xml.
		1481
		1482	=cut
		1483
		1484	sub expand_cfpod {
		1485	((my $self), (local $_)) = @_;
		1486
		1487	# escape & and <
		1488	s/&/&amp;/g;
		1489	s/(?<![BIUGH])</&lt;/g;
		1490
		1491	# this is buggy, it needs to properly take care of nested <'s
		1492
		1493	1 while
		1494	# replace B<>, I<>, U<> etc.
		1495	s/B<([^\>]*)>/<b>$1<\/b>/
		1496	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1497	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1498	# replace G<male|female> tags
		1499	|| s{G<([^>|]*)\|([^>]*)>}{
		1500	$self->gender ? $2 : $1
		1501	}ge
		1502	# replace H<hint text>
		1503	|| s{H<([^\>]*)>}
		1504	{
		1505	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1506	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1507	"")
		1508	[$self->{hintmode}]
		1509	}ge;
		1510
		1511	# create single paragraphs (very hackish)
		1512	s/(?<=\S)\n(?=\w)/ /g;
		1513
		1514	# compress some whitespace
		1515	s/\s+\n/\n/g; # ws line-ends
		1516	s/\n\n+/\n/g; # double lines
		1517	s/^\n+//; # beginning lines
		1518	s/\n+$//; # ending lines
		1519
		1520	$_
		1521	}
		1522
		1523	sub hintmode {
		1524	$_[0]{hintmode} = $_[1] if @_ > 1;
		1525	$_[0]{hintmode}
		1526	}
		1527
		1528	=item $player->ext_reply ($msgid, @msg)
		1529
		1530	Sends an ext reply to the player.
		1531
		1532	=cut
		1533
		1534	sub ext_reply($$@) {
		1535	my ($self, $id, @msg) = @_;
		1536
		1537	if ($self->ns->extcmd == 2) {
		1538	$self->send ("ext " . $self->ns->{json_coder}->encode (["reply-$id", @msg]));
		1539	} elsif ($self->ns->extcmd == 1) {
		1540	#TODO: version 1, remove
		1541	unshift @msg, msgtype => "reply", msgid => $id;
		1542	$self->send ("ext " . $self->ns->{json_coder}->encode ({@msg}));
		1543	}
		1544	}
		1545
		1546	=item $player->ext_msg ($type, @msg)
		1547
		1548	Sends an ext event to the client.
		1549
		1550	=cut
		1551
		1552	sub ext_msg($$@) {
		1553	my ($self, $type, @msg) = @_;
		1554
		1555	$self->ns->ext_msg ($type, @msg);
		1556	}
		1557
		1558	=head3 cf::region
		1559
		1560	=over 4
		1561
		1562	=cut
		1563
		1564	package cf::region;
		1565
		1566	=item cf::region::find_by_path $path
		1567
		1568	Tries to decuce the likely region for a map knowing only its path.
		1569
		1570	=cut
		1571
		1572	sub find_by_path($) {
		1573	my ($path) = @_;
		1574
		1575	my ($match, $specificity);
		1576
		1577	for my $region (list) {
		1578	if ($region->{match} && $path =~ $region->{match}) {
		1579	($match, $specificity) = ($region, $region->specificity)
		1580	if $region->specificity > $specificity;
		1581	}
		1582	}
		1583
		1584	$match
		1585	}
		1586
		1587	=back
		1588
		1589	=head3 cf::map
		1590
		1591	=over 4
		1592
		1593	=cut
		1594
		1595	package cf::map;
		1596
		1597	use Fcntl;
		1598	use Coro::AIO;
		1599
		1600	use overload
		1601	'""' => \&as_string,
		1602	fallback => 1;
		1603
		1604	our $MAX_RESET = 3600;
		1605	our $DEFAULT_RESET = 3000;
		1606
		1607	sub generate_random_map {
		1608	my ($self, $rmp) = @_;
		1609	# mit "rum" bekleckern, nicht
		1610	$self->_create_random_map (
		1611	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1612	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1613	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1614	$rmp->{exit_on_final_map},
		1615	$rmp->{xsize}, $rmp->{ysize},
		1616	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1617	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1618	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1619	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1620	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1621	(cf::region::find $rmp->{region}), $rmp->{custom}
		1622	)
		1623	}
		1624
		1625	=item cf::map->register ($regex, $prio)
		1626
		1627	Register a handler for the map path matching the given regex at the
		1628	givne priority (higher is better, built-in handlers have priority 0, the
		1629	default).
		1630
		1631	=cut
		1632
		1633	sub register {
		1634	my (undef, $regex, $prio) = @_;
		1635	my $pkg = caller;
		1636
		1637	no strict;
		1638	push @{"$pkg\::ISA"}, __PACKAGE__;
		1639
		1640	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1641	}
		1642
		1643	# also paths starting with '/'
		1644	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1645
		1646	sub thawer_merge {
		1647	my ($self, $merge) = @_;
		1648
		1649	# we have to keep some variables in memory intact
		1650	local $self->{path};
		1651	local $self->{load_path};
		1652
		1653	$self->SUPER::thawer_merge ($merge);
		1654	}
		1655
		1656	sub normalise {
		1657	my ($path, $base) = @_;
		1658
		1659	$path = "$path"; # make sure its a string
		1660
		1661	$path =~ s/\.map$//;
		1662
		1663	# map plan:
		1664	#
		1665	# /! non-realised random map exit (special hack!)
		1666	# {... are special paths that are not being touched
		1667	# ?xxx/... are special absolute paths
		1668	# ?random/... random maps
		1669	# /... normal maps
		1670	# ~user/... per-player map of a specific user
		1671
		1672	$path =~ s/$PATH_SEP/\//go;
		1673
		1674	# treat it as relative path if it starts with
		1675	# something that looks reasonable
		1676	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1677	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1678
		1679	$base =~ s{[^/]+/?$}{};
		1680	$path = "$base/$path";
		1681	}
		1682
		1683	for ($path) {
		1684	redo if s{//}{/};
		1685	redo if s{/\.?/}{/};
		1686	redo if s{/[^/]+/\.\./}{/};
		1687	}
		1688
		1689	$path
		1690	}
		1691
		1692	sub new_from_path {
		1693	my (undef, $path, $base) = @_;
		1694
		1695	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1696
		1697	$path = normalise $path, $base;
		1698
		1699	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1700	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1701	my $self = bless cf::map::new, $pkg;
		1702	$self->{path} = $path; $self->path ($path);
		1703	$self->init; # pass $1 etc.
		1704	return $self;
		1705	}
		1706	}
		1707
		1708	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1709	()
		1710	}
		1711
		1712	sub init {
		1713	my ($self) = @_;
		1714
		1715	$self
		1716	}
		1717
		1718	sub as_string {
		1719	my ($self) = @_;
		1720
		1721	"$self->{path}"
		1722	}
		1723
		1724	# the displayed name, this is a one way mapping
		1725	sub visible_name {
		1726	&as_string
		1727	}
		1728
		1729	# the original (read-only) location
		1730	sub load_path {
		1731	my ($self) = @_;
		1732
		1733	"$MAPDIR/$self->{path}.map"
		1734	}
		1735
		1736	# the temporary/swap location
		1737	sub save_path {
		1738	my ($self) = @_;
		1739
		1740	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1741	"$TMPDIR/$path.map"
		1742	}
		1743
		1744	# the unique path, undef == no special unique path
		1745	sub uniq_path {
		1746	my ($self) = @_;
		1747
		1748	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1749	"$UNIQUEDIR/$path"
		1750	}
		1751
		1752	# and all this just because we cannot iterate over
		1753	# all maps in C++...
		1754	sub change_all_map_light {
		1755	my ($change) = @_;
		1756
		1757	$_->change_map_light ($change)
		1758	for grep $_->outdoor, values %cf::MAP;
		1759	}
		1760
		1761	sub decay_objects {
		1762	my ($self) = @_;
		1763
		1764	return if $self->{deny_reset};
		1765
		1766	$self->do_decay_objects;
		1767	}
		1768
		1769	sub unlink_save {
		1770	my ($self) = @_;
		1771
		1772	utf8::encode (my $save = $self->save_path);
		1773	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1774	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1775	}
		1776
		1777	sub load_header_from($) {
		1778	my ($self, $path) = @_;
		1779
		1780	utf8::encode $path;
		1781	#aio_open $path, O_RDONLY, 0
		1782	# or return;
		1783
		1784	$self->_load_header ($path)
		1785	or return;
		1786
		1787	$self->{load_path} = $path;
		1788
		1789	1
		1790	}
		1791
		1792	sub load_header_orig {
		1793	my ($self) = @_;
		1794
		1795	$self->load_header_from ($self->load_path)
		1796	}
		1797
		1798	sub load_header_temp {
		1799	my ($self) = @_;
		1800
		1801	$self->load_header_from ($self->save_path)
		1802	}
		1803
		1804	sub prepare_temp {
		1805	my ($self) = @_;
		1806
		1807	$self->last_access ((delete $self->{last_access})
		1808	|| $cf::RUNTIME); #d#
		1809	# safety
		1810	$self->{instantiate_time} = $cf::RUNTIME
		1811	if $self->{instantiate_time} > $cf::RUNTIME;
		1812	}
		1813
		1814	sub prepare_orig {
		1815	my ($self) = @_;
		1816
		1817	$self->{load_original} = 1;
		1818	$self->{instantiate_time} = $cf::RUNTIME;
		1819	$self->last_access ($cf::RUNTIME);
		1820	$self->instantiate;
		1821	}
		1822
		1823	sub load_header {
		1824	my ($self) = @_;
		1825
		1826	if ($self->load_header_temp) {
		1827	$self->prepare_temp;
		1828	} else {
		1829	$self->load_header_orig
		1830	or return;
		1831	$self->prepare_orig;
		1832	}
		1833
		1834	$self->{deny_reset} = 1
		1835	if $self->no_reset;
		1836
		1837	$self->default_region (cf::region::find_by_path $self->{path})
		1838	unless $self->default_region;
		1839
		1840	1
		1841	}
		1842
		1843	sub find;
		1844	sub find {
		1845	my ($path, $origin) = @_;
		1846
		1847	$path = normalise $path, $origin && $origin->path;
		1848
		1849	cf::lock_wait "map_find:$path";
		1850
		1851	$cf::MAP{$path} || do {
		1852	my $guard = cf::lock_acquire "map_find:$path";
		1853	my $map = new_from_path cf::map $path
		1854	or return;
		1855
		1856	$map->{last_save} = $cf::RUNTIME;
		1857
		1858	$map->load_header
		1859	or return;
		1860
		1861	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1862	# doing this can freeze the server in a sync job, obviously
		1863	#$cf::WAIT_FOR_TICK->wait;
		1864	$map->reset;
		1865	undef $guard;
		1866	return find $path;
		1867	}
		1868
		1869	$cf::MAP{$path} = $map
		1870	}
		1871	}
		1872
		1873	sub pre_load { }
		1874	sub post_load { }
		1875
		1876	sub load {
		1877	my ($self) = @_;
		1878
		1879	local $self->{deny_reset} = 1; # loading can take a long time
		1880
		1881	my $path = $self->{path};
		1882
		1883	{
		1884	my $guard = cf::lock_acquire "map_load:$path";
		1885
		1886	return if $self->in_memory != cf::MAP_SWAPPED;
		1887
		1888	$self->in_memory (cf::MAP_LOADING);
		1889
		1890	$self->alloc;
		1891
		1892	$self->pre_load;
		1893	Coro::cede;
		1894
		1895	$self->_load_objects ($self->{load_path}, 1)
		1896	or return;
		1897
		1898	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1899	if delete $self->{load_original};
		1900
		1901	if (my $uniq = $self->uniq_path) {
		1902	utf8::encode $uniq;
		1903	if (aio_open $uniq, O_RDONLY, 0) {
		1904	$self->clear_unique_items;
		1905	$self->_load_objects ($uniq, 0);
		1906	}
		1907	}
		1908
		1909	Coro::cede;
		1910	# now do the right thing for maps
		1911	$self->link_multipart_objects;
		1912	$self->difficulty ($self->estimate_difficulty)
		1913	unless $self->difficulty;
		1914	Coro::cede;
		1915
		1916	unless ($self->{deny_activate}) {
		1917	$self->decay_objects;
		1918	$self->fix_auto_apply;
		1919	$self->update_buttons;
		1920	Coro::cede;
		1921	$self->set_darkness_map;
		1922	Coro::cede;
		1923	$self->activate;
		1924	}
		1925
		1926	$self->in_memory (cf::MAP_IN_MEMORY);
		1927	}
		1928
		1929	$self->post_load;
		1930	}
		1931
		1932	sub customise_for {
		1933	my ($self, $ob) = @_;
		1934
		1935	return find "~" . $ob->name . "/" . $self->{path}
		1936	if $self->per_player;
		1937
		1938	# return find "?party/" . $ob->name . "/" . $self->{path}
		1939	# if $self->per_party;
		1940
		1941	$self
		1942	}
		1943
		1944	# find and load all maps in the 3x3 area around a map
		1945	sub load_diag {
728	my ($map) = @_;	1946	my ($map) = @_;
729		1947
730	my $path = $map->tmpname;	1948	my @diag; # diagonal neighbours
731	defined $path or return;
732		1949
733	unlink "$path.pst";	1950	for (0 .. 3) {
734	};	1951	my $neigh = $map->tile_path ($_)
		1952	or next;
		1953	$neigh = find $neigh, $map
		1954	or next;
		1955	$neigh->load;
735		1956
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1957	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1958	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1959	}
737		1960
738	#############################################################################	1961	for (@diag) {
739	# load/save perl data associated with player->ob objects	1962	my $neigh = find @$_
740		1963	or next;
741	sub all_objects(@) {	1964	$neigh->load;
742	@_, map all_objects ($_->inv), @_	1965	}
743	}	1966	}
744		1967
745	# TODO: compatibility cruft, remove when no longer needed	1968	sub find_sync {
746	attach_to_players	1969	my ($path, $origin) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1970
750	for my $o (all_objects $pl->ob) {	1971	cf::sync_job { find $path, $origin }
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1972	}
752	$o->set_ob_key_value ("_perl_data");
753		1973
754	%$o = %{ Storable::thaw pack "H*", $value };	1974	sub do_load_sync {
		1975	my ($map) = @_;
		1976
		1977	cf::sync_job { $map->load };
		1978	}
		1979
		1980	our %MAP_PREFETCH;
		1981	our $MAP_PREFETCHER = undef;
		1982
		1983	sub find_async {
		1984	my ($path, $origin) = @_;
		1985
		1986	$path = normalise $path, $origin && $origin->{path};
		1987
		1988	if (my $map = $cf::MAP{$path}) {
		1989	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1990	}
		1991
		1992	undef $MAP_PREFETCH{$path};
		1993	$MAP_PREFETCHER ||= cf::async {
		1994	while (%MAP_PREFETCH) {
		1995	for my $path (keys %MAP_PREFETCH) {
		1996	if (my $map = find $path) {
		1997	$map->load;
		1998	}
		1999
		2000	delete $MAP_PREFETCH{$path};
755	}	2001	}
756	}	2002	}
		2003	undef $MAP_PREFETCHER;
		2004	};
		2005	$MAP_PREFETCHER->prio (6);
		2006
		2007	()
		2008	}
		2009
		2010	sub save {
		2011	my ($self) = @_;
		2012
		2013	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2014
		2015	$self->{last_save} = $cf::RUNTIME;
		2016
		2017	return unless $self->dirty;
		2018
		2019	my $save = $self->save_path; utf8::encode $save;
		2020	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2021
		2022	$self->{load_path} = $save;
		2023
		2024	return if $self->{deny_save};
		2025
		2026	local $self->{last_access} = $self->last_access;#d#
		2027
		2028	cf::async {
		2029	$_->contr->save for $self->players;
		2030	};
		2031
		2032	if ($uniq) {
		2033	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2034	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2035	} else {
		2036	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
757	},	2037	}
758	;	2038	}
759		2039
760	#############################################################################	2040	sub swap_out {
		2041	my ($self) = @_;
761		2042
762	=head2 CORE EXTENSIONS	2043	# save first because save cedes
		2044	$self->save;
763		2045
764	Functions and methods that extend core crossfire objects.	2046	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2047
		2048	return if $self->players;
		2049	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2050	return if $self->{deny_save};
		2051
		2052	$self->clear;
		2053	$self->in_memory (cf::MAP_SWAPPED);
		2054	}
		2055
		2056	sub reset_at {
		2057	my ($self) = @_;
		2058
		2059	# TODO: safety, remove and allow resettable per-player maps
		2060	return 1e99 if $self->{deny_reset};
		2061
		2062	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2063	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2064
		2065	$time + $to
		2066	}
		2067
		2068	sub should_reset {
		2069	my ($self) = @_;
		2070
		2071	$self->reset_at <= $cf::RUNTIME
		2072	}
		2073
		2074	sub reset {
		2075	my ($self) = @_;
		2076
		2077	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2078
		2079	return if $self->players;
		2080
		2081	warn "resetting map ", $self->path;
		2082
		2083	$self->in_memory (cf::MAP_SWAPPED);
		2084
		2085	# need to save uniques path
		2086	unless ($self->{deny_save}) {
		2087	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2088
		2089	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2090	if $uniq;
		2091	}
		2092
		2093	delete $cf::MAP{$self->path};
		2094
		2095	$self->clear;
		2096
		2097	$_->clear_links_to ($self) for values %cf::MAP;
		2098
		2099	$self->unlink_save;
		2100	$self->destroy;
		2101	}
		2102
		2103	my $nuke_counter = "aaaa";
		2104
		2105	sub nuke {
		2106	my ($self) = @_;
		2107
		2108	delete $cf::MAP{$self->path};
		2109
		2110	$self->unlink_save;
		2111
		2112	bless $self, "cf::map";
		2113	delete $self->{deny_reset};
		2114	$self->{deny_save} = 1;
		2115	$self->reset_timeout (1);
		2116	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2117
		2118	$cf::MAP{$self->path} = $self;
		2119
		2120	$self->reset; # polite request, might not happen
		2121	}
		2122
		2123	=item $maps = cf::map::tmp_maps
		2124
		2125	Returns an arrayref with all map paths of currently instantiated and saved
		2126	maps. May block.
		2127
		2128	=cut
		2129
		2130	sub tmp_maps() {
		2131	[
		2132	map {
		2133	utf8::decode $_;
		2134	/\.map$/
		2135	? normalise $_
		2136	: ()
		2137	} @{ aio_readdir $TMPDIR or [] }
		2138	]
		2139	}
		2140
		2141	=item $maps = cf::map::random_maps
		2142
		2143	Returns an arrayref with all map paths of currently instantiated and saved
		2144	random maps. May block.
		2145
		2146	=cut
		2147
		2148	sub random_maps() {
		2149	[
		2150	map {
		2151	utf8::decode $_;
		2152	/\.map$/
		2153	? normalise "?random/$_"
		2154	: ()
		2155	} @{ aio_readdir $RANDOMDIR or [] }
		2156	]
		2157	}
		2158
		2159	=item cf::map::unique_maps
		2160
		2161	Returns an arrayref of paths of all shared maps that have
		2162	instantiated unique items. May block.
		2163
		2164	=cut
		2165
		2166	sub unique_maps() {
		2167	[
		2168	map {
		2169	utf8::decode $_;
		2170	/\.map$/
		2171	? normalise $_
		2172	: ()
		2173	} @{ aio_readdir $UNIQUEDIR or [] }
		2174	]
		2175	}
		2176
		2177	package cf;
		2178
		2179	=back
		2180
		2181	=head3 cf::object
		2182
		2183	=cut
		2184
		2185	package cf::object;
765		2186
766	=over 4	2187	=over 4
767		2188
768	=item cf::player::exists $login	2189	=item $ob->inv_recursive
769		2190
770	Returns true when the given account exists.	2191	Returns the inventory of the object _and_ their inventories, recursively.
771		2192
772	=cut	2193	=cut
773		2194
774	sub cf::player::exists($) {	2195	sub inv_recursive_;
775	cf::player::find $_[0]	2196	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2197	map { $_, inv_recursive_ $_->inv } @_
777	}	2198	}
778		2199
		2200	sub inv_recursive {
		2201	inv_recursive_ inv $_[0]
		2202	}
		2203
		2204	package cf;
		2205
		2206	=back
		2207
		2208	=head3 cf::object::player
		2209
		2210	=over 4
		2211
779	=item $object->reply ($npc, $msg[, $flags])	2212	=item $player_object->reply ($npc, $msg[, $flags])
780		2213
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2214	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	2215	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	2216	dialogue with the given NPC character.
784		2217
785	=cut	2218	=cut
786		2219
787	# rough implementation of a future "reply" method that works	2220	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	2221	# with dialog boxes.
		2222	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	2223	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	2224	my ($self, $npc, $msg, $flags) = @_;
791		2225
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2226	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		2227
794	if ($self->{record_replies}) {	2228	if ($self->{record_replies}) {
795	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2229	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2230
796	} else {	2231	} else {
		2232	my $pl = $self->contr;
		2233
		2234	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2235	my $dialog = $pl->{npc_dialog};
		2236	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2237
		2238	} else {
797	$msg = $npc->name . " says: $msg" if $npc;	2239	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	2240	$self->message ($msg, $flags);
		2241	}
		2242	}
		2243	}
		2244
		2245	=item $player_object->may ("access")
		2246
		2247	Returns wether the given player is authorized to access resource "access"
		2248	(e.g. "command_wizcast").
		2249
		2250	=cut
		2251
		2252	sub cf::object::player::may {
		2253	my ($self, $access) = @_;
		2254
		2255	$self->flag (cf::FLAG_WIZ) ||
		2256	(ref $cf::CFG{"may_$access"}
		2257	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2258	: $cf::CFG{"may_$access"})
		2259	}
		2260
		2261	=item $player_object->enter_link
		2262
		2263	Freezes the player and moves him/her to a special map (C<{link}>).
		2264
		2265	The player should be reasonably safe there for short amounts of time. You
		2266	I<MUST> call C<leave_link> as soon as possible, though.
		2267
		2268	Will never block.
		2269
		2270	=item $player_object->leave_link ($map, $x, $y)
		2271
		2272	Moves the player out of the special C<{link}> map onto the specified
		2273	map. If the map is not valid (or omitted), the player will be moved back
		2274	to the location he/she was before the call to C<enter_link>, or, if that
		2275	fails, to the emergency map position.
		2276
		2277	Might block.
		2278
		2279	=cut
		2280
		2281	sub link_map {
		2282	unless ($LINK_MAP) {
		2283	$LINK_MAP = cf::map::find "{link}"
		2284	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2285	$LINK_MAP->load;
		2286	}
		2287
		2288	$LINK_MAP
		2289	}
		2290
		2291	sub cf::object::player::enter_link {
		2292	my ($self) = @_;
		2293
		2294	$self->deactivate_recursive;
		2295
		2296	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2297
		2298	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2299	if $self->map && $self->map->{path} ne "{link}";
		2300
		2301	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2302	}
		2303
		2304	sub cf::object::player::leave_link {
		2305	my ($self, $map, $x, $y) = @_;
		2306
		2307	return unless $self->contr->active;
		2308
		2309	my $link_pos = delete $self->{_link_pos};
		2310
		2311	unless ($map) {
		2312	# restore original map position
		2313	($map, $x, $y) = @{ $link_pos || [] };
		2314	$map = cf::map::find $map;
		2315
		2316	unless ($map) {
		2317	($map, $x, $y) = @$EMERGENCY_POSITION;
		2318	$map = cf::map::find $map
		2319	or die "FATAL: cannot load emergency map\n";
		2320	}
		2321	}
		2322
		2323	($x, $y) = (-1, -1)
		2324	unless (defined $x) && (defined $y);
		2325
		2326	# use -1 or undef as default coordinates, not 0, 0
		2327	($x, $y) = ($map->enter_x, $map->enter_y)
		2328	if $x <=0 && $y <= 0;
		2329
		2330	$map->load;
		2331	$map->load_diag;
		2332
		2333	return unless $self->contr->active;
		2334	$self->activate_recursive;
		2335
		2336	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2337	$self->enter_map ($map, $x, $y);
		2338	}
		2339
		2340	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2341
		2342	Moves the player to the given map-path and coordinates by first freezing
		2343	her, loading and preparing them map, calling the provided $check callback
		2344	that has to return the map if sucecssful, and then unfreezes the player on
		2345	the new (success) or old (failed) map position. In either case, $done will
		2346	be called at the end of this process.
		2347
		2348	=cut
		2349
		2350	our $GOTOGEN;
		2351
		2352	sub cf::object::player::goto {
		2353	my ($self, $path, $x, $y, $check, $done) = @_;
		2354
		2355	# do generation counting so two concurrent goto's will be executed in-order
		2356	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2357
		2358	$self->enter_link;
		2359
		2360	(async {
		2361	my $map = eval {
		2362	my $map = cf::map::find $path;
		2363
		2364	if ($map) {
		2365	$map = $map->customise_for ($self);
		2366	$map = $check->($map) if $check && $map;
		2367	} else {
		2368	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2369	}
		2370
		2371	$map
		2372	};
		2373
		2374	if ($@) {
		2375	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2376	LOG llevError | logBacktrace, Carp::longmess $@;
		2377	}
		2378
		2379	if ($gen == $self->{_goto_generation}) {
		2380	delete $self->{_goto_generation};
		2381	$self->leave_link ($map, $x, $y);
		2382	}
		2383
		2384	$done->() if $done;
		2385	})->prio (1);
		2386	}
		2387
		2388	=item $player_object->enter_exit ($exit_object)
		2389
		2390	=cut
		2391
		2392	sub parse_random_map_params {
		2393	my ($spec) = @_;
		2394
		2395	my $rmp = { # defaults
		2396	xsize => (cf::rndm 15, 40),
		2397	ysize => (cf::rndm 15, 40),
		2398	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2399	#layout => string,
799	}	2400	};
800	}
801		2401
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	2402	for (split /\n/, $spec) {
		2403	my ($k, $v) = split /\s+/, $_, 2;
803		2404
		2405	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2406	}
		2407
		2408	$rmp
		2409	}
		2410
		2411	sub prepare_random_map {
		2412	my ($exit) = @_;
		2413
		2414	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2415
		2416	# all this does is basically replace the /! path by
		2417	# a new random map path (?random/...) with a seed
		2418	# that depends on the exit object
		2419
		2420	my $rmp = parse_random_map_params $exit->msg;
		2421
		2422	if ($exit->map) {
		2423	$rmp->{region} = $exit->region->name;
		2424	$rmp->{origin_map} = $exit->map->path;
		2425	$rmp->{origin_x} = $exit->x;
		2426	$rmp->{origin_y} = $exit->y;
		2427	}
		2428
		2429	$rmp->{random_seed} ||= $exit->random_seed;
		2430
		2431	my $data = cf::to_json $rmp;
		2432	my $md5 = Digest::MD5::md5_hex $data;
		2433	my $meta = "$RANDOMDIR/$md5.meta";
		2434
		2435	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2436	aio_write $fh, 0, (length $data), $data, 0;
		2437	undef $fh;
		2438	aio_rename "$meta~", $meta;
		2439
		2440	$exit->slaying ("?random/$md5");
		2441	$exit->msg (undef);
		2442	}
		2443	}
		2444
		2445	sub cf::object::player::enter_exit {
		2446	my ($self, $exit) = @_;
		2447
		2448	return unless $self->type == cf::PLAYER;
		2449
		2450	if ($exit->slaying eq "/!") {
		2451	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2452	# the problem is that $exit might not survive long enough
		2453	# so it needs to be done right now, right here
		2454	cf::sync_job { prepare_random_map $exit };
		2455	}
		2456
		2457	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2458	my $hp = $exit->stats->hp;
		2459	my $sp = $exit->stats->sp;
		2460
		2461	$self->enter_link;
		2462
		2463	# if exit is damned, update players death & WoR home-position
		2464	$self->contr->savebed ($slaying, $hp, $sp)
		2465	if $exit->flag (FLAG_DAMNED);
		2466
		2467	(async {
		2468	$self->deactivate_recursive; # just to be sure
		2469	unless (eval {
		2470	$self->goto ($slaying, $hp, $sp);
		2471
		2472	1;
		2473	}) {
		2474	$self->message ("Something went wrong deep within the crossfire server. "
		2475	. "I'll try to bring you back to the map you were before. "
		2476	. "Please report this to the dungeon master!",
		2477	cf::NDI_UNIQUE | cf::NDI_RED);
		2478
		2479	warn "ERROR in enter_exit: $@";
		2480	$self->leave_link;
		2481	}
		2482	})->prio (1);
		2483	}
		2484
		2485	=head3 cf::client
		2486
		2487	=over 4
		2488
		2489	=item $client->send_drawinfo ($text, $flags)
		2490
		2491	Sends a drawinfo packet to the client. Circumvents output buffering so
		2492	should not be used under normal circumstances.
		2493
		2494	=cut
		2495
		2496	sub cf::client::send_drawinfo {
		2497	my ($self, $text, $flags) = @_;
		2498
		2499	utf8::encode $text;
		2500	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2501	}
		2502
		2503	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2504
		2505	Send a drawinfo or msg packet to the client, formatting the msg for the
		2506	client if neccessary. C<$type> should be a string identifying the type of
		2507	the message, with C<log> being the default. If C<$color> is negative, suppress
		2508	the message unless the client supports the msg packet.
		2509
		2510	=cut
		2511
		2512	sub cf::client::send_msg {
		2513	my ($self, $channel, $msg, $color, @extra) = @_;
		2514
		2515	$msg = $self->pl->expand_cfpod ($msg);
		2516
		2517	$color &= ~cf::NDI_UNIQUE; # just in case...
		2518
		2519	if (ref $channel) {
		2520	# send meta info to client, if not yet sent
		2521	unless (exists $self->{channel}{$channel->{id}}) {
		2522	$self->{channel}{$channel->{id}} = $channel;
		2523	$self->ext_msg (channel_info => $channel);
		2524	}
		2525
		2526	$channel = $channel->{id};
		2527	}
		2528
		2529	return unless @extra || length $msg;
		2530
		2531	if ($self->can_msg) {
		2532	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2533	} else {
		2534	# replace some tags by gcfclient-compatible ones
		2535	for ($msg) {
		2536	1 while
		2537	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2538	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2539	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2540	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2541	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2542	}
		2543
		2544	if ($color >= 0) {
		2545	if (0 && $msg =~ /\[/) {
		2546	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2547	} else {
		2548	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2549	$self->send_packet ("drawinfo $color $msg")
		2550	}
		2551	}
		2552	}
		2553	}
		2554
		2555	=item $client->ext_msg ($type, @msg)
		2556
804	Sends an ext reply to the player.	2557	Sends an ext event to the client.
805		2558
806	=cut	2559	=cut
807		2560
808	sub cf::player::ext_reply($$$%) {	2561	sub cf::client::ext_msg($$@) {
809	my ($self, $id, %msg) = @_;	2562	my ($self, $type, @msg) = @_;
810		2563
811	$msg{msgid} = $id;	2564	my $extcmd = $self->extcmd;
812		2565
813	$self->send ("ext " . to_json \%msg);	2566	if ($extcmd == 2) {
		2567	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2568	} elsif ($extcmd == 1) { # TODO: remove
		2569	push @msg, msgtype => "event_$type";
		2570	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2571	}
814	}	2572	}
		2573
		2574	=item $success = $client->query ($flags, "text", \&cb)
		2575
		2576	Queues a query to the client, calling the given callback with
		2577	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2578	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2579
		2580	Queries can fail, so check the return code. Or don't, as queries will
		2581	become reliable at some point in the future.
		2582
		2583	=cut
		2584
		2585	sub cf::client::query {
		2586	my ($self, $flags, $text, $cb) = @_;
		2587
		2588	return unless $self->state == ST_PLAYING
		2589	|| $self->state == ST_SETUP
		2590	|| $self->state == ST_CUSTOM;
		2591
		2592	$self->state (ST_CUSTOM);
		2593
		2594	utf8::encode $text;
		2595	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2596
		2597	$self->send_packet ($self->{query_queue}[0][0])
		2598	if @{ $self->{query_queue} } == 1;
		2599
		2600	1
		2601	}
		2602
		2603	cf::client->attach (
		2604	on_connect => sub {
		2605	my ($ns) = @_;
		2606
		2607	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2608	},
		2609	on_reply => sub {
		2610	my ($ns, $msg) = @_;
		2611
		2612	# this weird shuffling is so that direct followup queries
		2613	# get handled first
		2614	my $queue = delete $ns->{query_queue}
		2615	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2616
		2617	(shift @$queue)->[1]->($msg);
		2618	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2619
		2620	push @{ $ns->{query_queue} }, @$queue;
		2621
		2622	if (@{ $ns->{query_queue} } == @$queue) {
		2623	if (@$queue) {
		2624	$ns->send_packet ($ns->{query_queue}[0][0]);
		2625	} else {
		2626	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2627	}
		2628	}
		2629	},
		2630	on_exticmd => sub {
		2631	my ($ns, $buf) = @_;
		2632
		2633	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2634
		2635	if (ref $msg) {
		2636	my ($type, $reply, @payload) =
		2637	"ARRAY" eq ref $msg
		2638	? @$msg
		2639	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2640
		2641	if (my $cb = $EXTICMD{$type}) {
		2642	my @reply = $cb->($ns, @payload);
		2643
		2644	$ns->ext_reply ($reply, @reply)
		2645	if $reply;
		2646	}
		2647	} else {
		2648	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2649	}
		2650
		2651	cf::override;
		2652	},
		2653	);
		2654
		2655	=item $client->async (\&cb)
		2656
		2657	Create a new coroutine, running the specified callback. The coroutine will
		2658	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2659	or loss of connection).
		2660
		2661	=cut
		2662
		2663	sub cf::client::async {
		2664	my ($self, $cb) = @_;
		2665
		2666	my $coro = &Coro::async ($cb);
		2667
		2668	$coro->on_destroy (sub {
		2669	delete $self->{_coro}{$coro+0};
		2670	});
		2671
		2672	$self->{_coro}{$coro+0} = $coro;
		2673
		2674	$coro
		2675	}
		2676
		2677	cf::client->attach (
		2678	on_destroy => sub {
		2679	my ($ns) = @_;
		2680
		2681	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2682	},
		2683	);
815		2684
816	=back	2685	=back
817		2686
818	=cut
819
820	#############################################################################
821		2687
822	=head2 SAFE SCRIPTING	2688	=head2 SAFE SCRIPTING
823		2689
824	Functions that provide a safe environment to compile and execute	2690	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2691	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2692	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2693	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2694	functions and methods that can be called is greatly reduced.
829		2695
830	=cut	2696	=cut
831		2697
832	our $safe = new Safe "safe";	2698	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2699	our $safe_hole = new Safe::Hole;
…		…
838		2704
839	# here we export the classes and methods available to script code	2705	# here we export the classes and methods available to script code
840		2706
841	=pod	2707	=pod
842		2708
843	The following fucntions and emthods are available within a safe environment:	2709	The following functions and methods are available within a safe environment:
844		2710
845	cf::object contr pay_amount pay_player	2711	cf::object
		2712	contr pay_amount pay_player map x y force_find force_add
		2713	insert remove
		2714
846	cf::object::player player	2715	cf::object::player
847	cf::player peaceful	2716	player
		2717
		2718	cf::player
		2719	peaceful
		2720
		2721	cf::map
		2722	trigger
848		2723
849	=cut	2724	=cut
850		2725
851	for (	2726	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2727	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2728	insert remove)],
853	["cf::object::player" => qw(player)],	2729	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2730	["cf::player" => qw(peaceful)],
		2731	["cf::map" => qw(trigger)],
855	) {	2732	) {
856	no strict 'refs';	2733	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2734	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2735	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2736	for @funs;
…		…
927	=back	2804	=back
928		2805
929	=cut	2806	=cut
930		2807
931	#############################################################################	2808	#############################################################################
		2809	# the server's init and main functions
932		2810
933	=head2 EXTENSION DATABASE SUPPORT	2811	sub load_facedata($) {
		2812	my ($path) = @_;
934		2813
935	Crossfire maintains a very simple database for extension use. It can	2814	warn "loading facedata from $path\n";
936	currently store anything that can be serialised using Storable, which
937	excludes objects.
938		2815
939	The parameter C<$family> should best start with the name of the extension	2816	my $facedata;
940	using it, it should be unique.	2817	0 < aio_load $path, $facedata
		2818	or die "$path: $!";
941		2819
942	=over 4	2820	$facedata = Coro::Storable::thaw $facedata;
943		2821
944	=item $hashref = cf::db_get $family	2822	$facedata->{version} == 2
		2823	or cf::cleanup "$path: version mismatch, cannot proceed.";
945		2824
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	}	2825	{
		2826	my $faces = $facedata->{faceinfo};
982		2827
983	my $pid;	2828	while (my ($face, $info) = each %$faces) {
		2829	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2830	cf::face::set_visibility $idx, $info->{visibility};
		2831	cf::face::set_magicmap $idx, $info->{magicmap};
		2832	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2833	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
984		2834
985	sub db_save() {	2835	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	},	2836	}
		2837
		2838	while (my ($face, $info) = each %$faces) {
		2839	next unless $info->{smooth};
		2840	my $idx = cf::face::find $face
		2841	or next;
		2842	if (my $smooth = cf::face::find $info->{smooth}) {
		2843	cf::face::set_smooth $idx, $smooth;
		2844	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2845	} else {
		2846	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2847	}
		2848
		2849	cf::cede_to_tick;
		2850	}
1032	;	2851	}
1033	}
1034		2852
1035	#############################################################################	2853	{
1036	# the server's main()	2854	my $anims = $facedata->{animinfo};
		2855
		2856	while (my ($anim, $info) = each %$anims) {
		2857	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2858	cf::cede_to_tick;
		2859	}
		2860
		2861	cf::anim::invalidate_all; # d'oh
		2862	}
		2863
		2864	{
		2865	# TODO: for gcfclient pleasure, we should give resources
		2866	# that gcfclient doesn't grok a >10000 face index.
		2867	my $res = $facedata->{resource};
		2868	my $enc = JSON::XS->new->utf8->canonical;
		2869
		2870	while (my ($name, $info) = each %$res) {
		2871	my $meta = $enc->encode ({
		2872	name => $name,
		2873	copyright => $info->{copyright}, #TODO#
		2874	});
		2875
		2876	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2877
		2878	if ($info->{type} & 1) {
		2879	# prepend meta info
		2880
		2881	my $data = pack "(w/a*)*", $meta, $info->{data};
		2882	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2883
		2884	cf::face::set_data $idx, 0, $data, $chk;
		2885	} else {
		2886	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};
		2887	}
		2888
		2889	cf::face::set_type $idx, $info->{type};
		2890
		2891	cf::cede_to_tick;
		2892	}
		2893	}
		2894
		2895	1
		2896	}
		2897
		2898	register_exticmd fx_want => sub {
		2899	my ($ns, $want) = @_;
		2900
		2901	while (my ($k, $v) = each %$want) {
		2902	$ns->fx_want ($k, $v);
		2903	}
		2904	};
		2905
		2906	sub reload_regions {
		2907	load_resource_file "$MAPDIR/regions"
		2908	or die "unable to load regions file\n";
		2909
		2910	for (cf::region::list) {
		2911	$_->{match} = qr/$_->{match}/
		2912	if exists $_->{match};
		2913	}
		2914	}
		2915
		2916	sub reload_facedata {
		2917	load_facedata "$DATADIR/facedata"
		2918	or die "unable to load facedata\n";
		2919	}
		2920
		2921	sub reload_archetypes {
		2922	load_resource_file "$DATADIR/archetypes"
		2923	or die "unable to load archetypes\n";
		2924	#d# NEED to laod twice to resolve forward references
		2925	# this really needs to be done in an extra post-pass
		2926	# (which needs to be synchronous, so solve it differently)
		2927	load_resource_file "$DATADIR/archetypes"
		2928	or die "unable to load archetypes\n";
		2929	}
		2930
		2931	sub reload_treasures {
		2932	load_resource_file "$DATADIR/treasures"
		2933	or die "unable to load treasurelists\n";
		2934	}
		2935
		2936	sub reload_resources {
		2937	warn "reloading resource files...\n";
		2938
		2939	reload_regions;
		2940	reload_facedata;
		2941	#reload_archetypes;#d#
		2942	reload_archetypes;
		2943	reload_treasures;
		2944
		2945	warn "finished reloading resource files\n";
		2946	}
		2947
		2948	sub init {
		2949	reload_resources;
		2950	}
1037		2951
1038	sub cfg_load {	2952	sub cfg_load {
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2953	open my $fh, "<:utf8", "$CONFDIR/config"
1040	or return;	2954	or return;
1041		2955
1042	local $/;	2956	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	2957	*CFG = YAML::Syck::Load <$fh>;
		2958
		2959	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2960
		2961	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2962	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2963
		2964	if (exists $CFG{mlockall}) {
		2965	eval {
		2966	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2967	and die "WARNING: m(un)lockall failed: $!\n";
		2968	};
		2969	warn $@ if $@;
		2970	}
1044	}	2971	}
1045		2972
1046	sub main {	2973	sub main {
		2974	# we must not ever block the main coroutine
		2975	local $Coro::idle = sub {
		2976	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2977	(async {
		2978	Event::one_event;
		2979	})->prio (Coro::PRIO_MAX);
		2980	};
		2981
1047	cfg_load;	2982	cfg_load;
1048	db_load;	2983	db_init;
1049	load_extensions;	2984	load_extensions;
		2985
		2986	$TICK_WATCHER->start;
1050	Event::loop;	2987	Event::loop;
1051	}	2988	}
1052		2989
1053	#############################################################################	2990	#############################################################################
1054	# initialisation	2991	# initialisation and cleanup
1055		2992
1056	sub _perl_reload(&) {	2993	# install some emergency cleanup handlers
		2994	BEGIN {
		2995	for my $signal (qw(INT HUP TERM)) {
		2996	Event->signal (
		2997	reentrant => 0,
		2998	data => WF_AUTOCANCEL,
		2999	signal => $signal,
		3000	prio => 0,
		3001	cb => sub {
		3002	cf::cleanup "SIG$signal";
		3003	},
		3004	);
		3005	}
		3006	}
		3007
		3008	sub write_runtime {
		3009	my $runtime = "$LOCALDIR/runtime";
		3010
		3011	# first touch the runtime file to show we are still running:
		3012	# the fsync below can take a very very long time.
		3013
		3014	IO::AIO::aio_utime $runtime, undef, undef;
		3015
		3016	my $guard = cf::lock_acquire "write_runtime";
		3017
		3018	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3019	or return;
		3020
		3021	my $value = $cf::RUNTIME + 90 + 10;
		3022	# 10 is the runtime save interval, for a monotonic clock
		3023	# 60 allows for the watchdog to kill the server.
		3024
		3025	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3026	and return;
		3027
		3028	# always fsync - this file is important
		3029	aio_fsync $fh
		3030	and return;
		3031
		3032	# touch it again to show we are up-to-date
		3033	aio_utime $fh, undef, undef;
		3034
		3035	close $fh
		3036	or return;
		3037
		3038	aio_rename "$runtime~", $runtime
		3039	and return;
		3040
		3041	warn "runtime file written.\n";
		3042
		3043	1
		3044	}
		3045
		3046	sub emergency_save() {
		3047	my $freeze_guard = cf::freeze_mainloop;
		3048
		3049	warn "enter emergency perl save\n";
		3050
		3051	cf::sync_job {
		3052	# use a peculiar iteration method to avoid tripping on perl
		3053	# refcount bugs in for. also avoids problems with players
		3054	# and maps saved/destroyed asynchronously.
		3055	warn "begin emergency player save\n";
		3056	for my $login (keys %cf::PLAYER) {
		3057	my $pl = $cf::PLAYER{$login} or next;
		3058	$pl->valid or next;
		3059	$pl->save;
		3060	}
		3061	warn "end emergency player save\n";
		3062
		3063	warn "begin emergency map save\n";
		3064	for my $path (keys %cf::MAP) {
		3065	my $map = $cf::MAP{$path} or next;
		3066	$map->valid or next;
		3067	$map->save;
		3068	}
		3069	warn "end emergency map save\n";
		3070
		3071	warn "begin emergency database checkpoint\n";
		3072	BDB::db_env_txn_checkpoint $DB_ENV;
		3073	warn "end emergency database checkpoint\n";
		3074	};
		3075
		3076	warn "leave emergency perl save\n";
		3077	}
		3078
		3079	sub post_cleanup {
1057	my ($msg) = @_;	3080	my ($make_core) = @_;
1058		3081
1059	$msg->("reloading...");	3082	warn Carp::longmess "post_cleanup backtrace"
		3083	if $make_core;
		3084	}
1060		3085
1061	eval {	3086	sub do_reload_perl() {
1062	# cancel all watchers	3087	# can/must only be called in main
		3088	if ($Coro::current != $Coro::main) {
		3089	warn "can only reload from main coroutine";
		3090	return;
		3091	}
		3092
		3093	warn "reloading...";
		3094
		3095	warn "entering sync_job";
		3096
		3097	cf::sync_job {
		3098	cf::write_runtime; # external watchdog should not bark
		3099	cf::emergency_save;
		3100	cf::write_runtime; # external watchdog should not bark
		3101
		3102	warn "syncing database to disk";
		3103	BDB::db_env_txn_checkpoint $DB_ENV;
		3104
		3105	# if anything goes wrong in here, we should simply crash as we already saved
		3106
		3107	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	3108	for (Event::all_watchers) {
		3109	$_->cancel if $_->data & WF_AUTOCANCEL;
		3110	}
1064		3111
1065	# unload all extensions	3112	warn "flushing outstanding aio requests";
1066	for (@exts) {	3113	for (;;) {
1067	$msg->("unloading <$_>");	3114	BDB::flush;
1068	unload_extension $_;	3115	IO::AIO::flush;
		3116	Coro::cede;
		3117	last unless IO::AIO::nreqs || BDB::nreqs;
		3118	warn "iterate...";
		3119	}
		3120
		3121	++$RELOAD;
		3122
		3123	warn "cancelling all extension coros";
		3124	$_->cancel for values %EXT_CORO;
		3125	%EXT_CORO = ();
		3126
		3127	warn "removing commands";
		3128	%COMMAND = ();
		3129
		3130	warn "removing ext/exti commands";
		3131	%EXTCMD = ();
		3132	%EXTICMD = ();
		3133
		3134	warn "unloading/nuking all extensions";
		3135	for my $pkg (@EXTS) {
		3136	warn "... unloading $pkg";
		3137
		3138	if (my $cb = $pkg->can ("unload")) {
		3139	eval {
		3140	$cb->($pkg);
		3141	1
		3142	} or warn "$pkg unloaded, but with errors: $@";
1069	}	3143	}
1070		3144
		3145	warn "... nuking $pkg";
		3146	Symbol::delete_package $pkg;
		3147	}
		3148
1071	# unload all modules loaded from $LIBDIR	3149	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	3150	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3151	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		3152
1075	$msg->("removing <$k>");	3153	warn "... unloading $k";
1076	delete $INC{$k};	3154	delete $INC{$k};
1077		3155
1078	$k =~ s/\.pm$//;	3156	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	3157	$k =~ s/\//::/g;
1080		3158
…		…
1083	}	3161	}
1084		3162
1085	Symbol::delete_package $k;	3163	Symbol::delete_package $k;
1086	}	3164	}
1087		3165
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	3166	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	3167	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3168	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		3169
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	3170	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	3171	delete $INC{"cf.pm"};
		3172	delete $INC{"cf/pod.pm"};
1100		3173
1101	# don't, removes xs symbols, too,	3174	# don't, removes xs symbols, too,
1102	# and global variables created in xs	3175	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	3176	#Symbol::delete_package __PACKAGE__;
1104		3177
1105	# reload cf.pm	3178	warn "unload completed, starting to reload now";
		3179
1106	$msg->("reloading cf.pm");	3180	warn "reloading cf.pm";
1107	require cf;	3181	require cf;
		3182	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		3183
1109	# load config and database again	3184	warn "loading config and database again";
1110	cf::cfg_load;	3185	cf::cfg_load;
1111	cf::db_load;
1112		3186
1113	# load extensions	3187	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	3188	cf::load_extensions;
1116		3189
1117	# reattach attachments to objects	3190	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");	3191	_global_reattach; # objects, sockets
1119	_global_reattach;	3192	warn "reattaching attachments to maps";
		3193	reattach $_ for values %MAP;
		3194	warn "reattaching attachments to players";
		3195	reattach $_ for values %PLAYER;
		3196
		3197	warn "leaving sync_job";
		3198
		3199	1
		3200	} or do {
		3201	warn $@;
		3202	warn "error while reloading, exiting.";
		3203	exit 1;
1120	};	3204	};
1121	$msg->($@) if $@;
1122		3205
1123	$msg->("reloaded");	3206	warn "reloaded";
1124	};	3207	};
1125		3208
1126	sub perl_reload() {	3209	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {	3210
1128	warn $_[0];	3211	sub reload_perl() {
1129	print "$_[0]\n";	3212	# doing reload synchronously and two reloads happen back-to-back,
		3213	# coro crashes during coro_state_free->destroy here.
		3214
		3215	$RELOAD_WATCHER ||= Event->timer (
		3216	reentrant => 0,
		3217	after => 0,
		3218	data => WF_AUTOCANCEL,
		3219	cb => sub {
		3220	do_reload_perl;
		3221	undef $RELOAD_WATCHER;
		3222	},
1130	};	3223	);
1131	}	3224	}
1132		3225
1133	register_command "perl-reload", 0, sub {	3226	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	3227	my ($who, $arg) = @_;
1135		3228
1136	if ($who->flag (FLAG_WIZ)) {	3229	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	3230	$who->message ("reloading server.");
1138	warn $_[0];	3231	async { reload_perl };
1139	$who->message ($_[0]);	3232	}
		3233	};
		3234
		3235	unshift @INC, $LIBDIR;
		3236
		3237	my $bug_warning = 0;
		3238
		3239	our @WAIT_FOR_TICK;
		3240	our @WAIT_FOR_TICK_BEGIN;
		3241
		3242	sub wait_for_tick {
		3243	return unless $TICK_WATCHER->is_active;
		3244	return if $Coro::current == $Coro::main;
		3245
		3246	my $signal = new Coro::Signal;
		3247	push @WAIT_FOR_TICK, $signal;
		3248	$signal->wait;
		3249	}
		3250
		3251	sub wait_for_tick_begin {
		3252	return unless $TICK_WATCHER->is_active;
		3253	return if $Coro::current == $Coro::main;
		3254
		3255	my $signal = new Coro::Signal;
		3256	push @WAIT_FOR_TICK_BEGIN, $signal;
		3257	$signal->wait;
		3258	}
		3259
		3260	my $min = 1e6;#d#
		3261	my $avg = 10;
		3262	$TICK_WATCHER = Event->timer (
		3263	reentrant => 0,
		3264	parked => 1,
		3265	prio => 0,
		3266	at => $NEXT_TICK || $TICK,
		3267	data => WF_AUTOCANCEL,
		3268	cb => sub {
		3269	if ($Coro::current != $Coro::main) {
		3270	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3271	unless ++$bug_warning > 10;
		3272	return;
		3273	}
		3274
		3275	$NOW = $tick_start = Event::time;
		3276
		3277	cf::server_tick; # one server iteration
		3278
		3279	0 && sync_job {#d#
		3280	for(1..10) {
		3281	my $t = Event::time;
		3282	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3283	or die;
		3284
		3285	$map->width (50);
		3286	$map->height (50);
		3287	$map->alloc;
		3288	$map->_load_objects ("/tmp/x.map", 1);
		3289	my $t = Event::time - $t;
		3290
		3291	#next unless $t < 0.0013;#d#
		3292	if ($t < $min) {
		3293	$min = $t;
		3294	}
		3295	$avg = $avg * 0.99 + $t * 0.01;
		3296	}
		3297	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3298	exit 0;
		3299	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1140	};	3300	};
1141	}
1142	};
1143		3301
1144	register "<global>", __PACKAGE__;	3302	$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;	3303	$NEXT_TICK += $TICK;
1156		3304
		3305	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3306	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3307	Coro::async_pool {
		3308	write_runtime
		3309	or warn "ERROR: unable to write runtime file: $!";
		3310	};
		3311	}
		3312
		3313	# my $AFTER = Event::time;
		3314	# warn $AFTER - $NOW;#d#
		3315
		3316	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3317	$sig->send;
		3318	}
		3319	while (my $sig = shift @WAIT_FOR_TICK) {
		3320	$sig->send;
		3321	}
		3322
		3323	$NOW = Event::time;
		3324
1157	# if we are delayed by four ticks, skip them all	3325	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3326	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1159		3327
1160	$TICK_WATCHER->at ($NEXT_TICK);	3328	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	3329	$TICK_WATCHER->start;
		3330
		3331	$LOAD = ($NOW - $tick_start) / $TICK;
		3332	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3333
		3334	_post_tick;
		3335
		3336
1162	},	3337	},
1163	);	3338	);
1164		3339
		3340	{
		3341	BDB::max_poll_time $TICK * 0.1;
		3342	$BDB_POLL_WATCHER = Event->io (
		3343	reentrant => 0,
		3344	fd => BDB::poll_fileno,
		3345	poll => 'r',
		3346	prio => 0,
		3347	data => WF_AUTOCANCEL,
		3348	cb => \&BDB::poll_cb,
		3349	);
		3350	BDB::min_parallel 8;
		3351
		3352	BDB::set_sync_prepare {
		3353	my $status;
		3354	my $current = $Coro::current;
		3355	(
		3356	sub {
		3357	$status = $!;
		3358	$current->ready; undef $current;
		3359	},
		3360	sub {
		3361	Coro::schedule while defined $current;
		3362	$! = $status;
		3363	},
		3364	)
		3365	};
		3366
		3367	unless ($DB_ENV) {
		3368	$DB_ENV = BDB::db_env_create;
		3369
		3370	cf::sync_job {
		3371	eval {
		3372	BDB::db_env_open
		3373	$DB_ENV,
		3374	$BDBDIR,
		3375	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3376	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3377	0666;
		3378
		3379	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3380
		3381	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3382	$DB_ENV->set_lk_detect;
		3383	};
		3384
		3385	cf::cleanup "db_env_open(db): $@" if $@;
		3386	};
		3387	}
		3388	}
		3389
		3390	{
		3391	IO::AIO::min_parallel 8;
		3392
		3393	undef $Coro::AIO::WATCHER;
		3394	IO::AIO::max_poll_time $TICK * 0.1;
		3395	$AIO_POLL_WATCHER = Event->io (
		3396	reentrant => 0,
		3397	data => WF_AUTOCANCEL,
		3398	fd => IO::AIO::poll_fileno,
		3399	poll => 'r',
		3400	prio => 6,
		3401	cb => \&IO::AIO::poll_cb,
		3402	);
		3403	}
		3404
		3405	my $_log_backtrace;
		3406
		3407	sub _log_backtrace {
		3408	my ($msg, @addr) = @_;
		3409
		3410	$msg =~ s/\n//;
		3411
		3412	# limit the # of concurrent backtraces
		3413	if ($_log_backtrace < 2) {
		3414	++$_log_backtrace;
		3415	async {
		3416	my @bt = fork_call {
		3417	@addr = map { sprintf "%x", $_ } @addr;
		3418	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3419	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3420	or die "addr2line: $!";
		3421
		3422	my @funcs;
		3423	my @res = <$fh>;
		3424	chomp for @res;
		3425	while (@res) {
		3426	my ($func, $line) = splice @res, 0, 2, ();
		3427	push @funcs, "[$func] $line";
		3428	}
		3429
		3430	@funcs
		3431	};
		3432
		3433	LOG llevInfo, "[ABT] $msg\n";
		3434	LOG llevInfo, "[ABT] $_\n" for @bt;
		3435	--$_log_backtrace;
		3436	};
		3437	} else {
		3438	LOG llevInfo, "[ABT] $msg\n";
		3439	LOG llevInfo, "[ABT] [suppressed]\n";
		3440	}
		3441	}
		3442
		3443	# load additional modules
		3444	use cf::pod;
		3445
		3446	END { cf::emergency_save }
		3447
1165	1	3448	1
1166		3449

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