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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.105 by root, Sun Dec 31 17:17:23 2006 UTC vs.
Revision 1.299 by root, Sun Jul 8 14:56:05 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro 3.3;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
19		24
		25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
20	use Fcntl;	29	use Fcntl;
21	use IO::AIO 2.31 ();
22	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
23	use Time::HiRes;	32	use Time::HiRes;
		33	use Compress::LZF;
24		34
		35	# configure various modules to our taste
		36	#
		37	$Storable::canonical = 1; # reduce rsync transfers
		38	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		39	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		40
25	use Event; $Event::Eval = 1; # no idea why this is required, but it is	41	$Event::Eval = 1; # no idea why this is required, but it is
26		42
27	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	43	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
28	$YAML::Syck::ImplicitUnicode = 1;	44	$YAML::Syck::ImplicitUnicode = 1;
29		45
30	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	46	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
31		47
32	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	48	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
33		49
34	our %COMMAND = ();	50	our %COMMAND = ();
35	our %COMMAND_TIME = ();	51	our %COMMAND_TIME = ();
		52
		53	our @EXTS = (); # list of extension package names
36	our %EXTCMD = ();	54	our %EXTCMD = ();
		55	our %EXTICMD = ();
		56	our %EXT_CORO = (); # coroutines bound to extensions
		57	our %EXT_MAP = (); # pluggable maps
37		58
		59	our $RELOAD; # number of reloads so far
38	our @EVENT;	60	our @EVENT;
39	our $LIBDIR = datadir . "/ext";
40		61
41	our $TICK = MAX_TIME * 1e-6;	62	our $CONFDIR = confdir;
		63	our $DATADIR = datadir;
		64	our $LIBDIR = "$DATADIR/ext";
		65	our $PODDIR = "$DATADIR/pod";
		66	our $MAPDIR = "$DATADIR/" . mapdir;
		67	our $LOCALDIR = localdir;
		68	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		69	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		70	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		71	our $RANDOMDIR = "$LOCALDIR/random";
		72	our $BDBDIR = "$LOCALDIR/db";
		73
		74	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
42	our $TICK_WATCHER;	75	our $TICK_WATCHER;
		76	our $AIO_POLL_WATCHER;
		77	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
43	our $NEXT_TICK;	78	our $NEXT_TICK;
44	our $NOW;	79	our $NOW;
		80	our $USE_FSYNC = 1; # use fsync to write maps - default off
		81
		82	our $BDB_POLL_WATCHER;
		83	our $DB_ENV;
45		84
46	our %CFG;	85	our %CFG;
47		86
48	our $UPTIME; $UPTIME ||= time;	87	our $UPTIME; $UPTIME ||= time;
49	our $RUNTIME;	88	our $RUNTIME;
50		89
		90	our %PLAYER; # all users
51	our %MAP; # all maps	91	our %MAP; # all maps
52	our $LINK_MAP; # the special {link} map	92	our $LINK_MAP; # the special {link} map, which is always available
53	our $FREEZE;	93
		94	# used to convert map paths into valid unix filenames by replacing / by ∕
		95	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		96
		97	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		98	our $LOADAVG; # same thing, but with alpha-smoothing
		99	our $tick_start; # for load detecting purposes
54		100
55	binmode STDOUT;	101	binmode STDOUT;
56	binmode STDERR;	102	binmode STDERR;
57		103
58	# read virtual server time, if available	104	# read virtual server time, if available
59	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	105	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
60	open my $fh, "<", cf::localdir . "/runtime"	106	open my $fh, "<", "$LOCALDIR/runtime"
61	or die "unable to read runtime file: $!";	107	or die "unable to read runtime file: $!";
62	$RUNTIME = <$fh> + 0.;	108	$RUNTIME = <$fh> + 0.;
63	}	109	}
64		110
65	mkdir cf::localdir;	111	mkdir $_
66	mkdir cf::localdir . "/" . cf::playerdir;	112	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
67	mkdir cf::localdir . "/" . cf::tmpdir;
68	mkdir cf::localdir . "/" . cf::uniquedir;
69		113
70	our %EXT_CORO;	114	our $EMERGENCY_POSITION;
		115
		116	sub cf::map::normalise;
71		117
72	#############################################################################	118	#############################################################################
73		119
74	=head2 GLOBAL VARIABLES	120	=head2 GLOBAL VARIABLES
75		121
…		…
82	=item $cf::RUNTIME	128	=item $cf::RUNTIME
83		129
84	The time this server has run, starts at 0 and is increased by $cf::TICK on	130	The time this server has run, starts at 0 and is increased by $cf::TICK on
85	every server tick.	131	every server tick.
86		132
87	=item $cf::LIBDIR	133	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		134	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		135	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
88		136
89	The perl library directory, where extensions and cf-specific modules can	137	Various directories - "/etc", read-only install directory, perl-library
90	be found. It will be added to C<@INC> automatically.	138	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		139	unique-items directory, player file directory, random maps directory and
		140	database environment.
91		141
92	=item $cf::NOW	142	=item $cf::NOW
93		143
94	The time of the last (current) server tick.	144	The time of the last (current) server tick.
95		145
96	=item $cf::TICK	146	=item $cf::TICK
97		147
98	The interval between server ticks, in seconds.	148	The interval between server ticks, in seconds.
		149
		150	=item $cf::LOADAVG
		151
		152	The current CPU load on the server (alpha-smoothed), as a value between 0
		153	(none) and 1 (overloaded), indicating how much time is spent on processing
		154	objects per tick. Healthy values are < 0.5.
		155
		156	=item $cf::LOAD
		157
		158	The raw value load value from the last tick.
99		159
100	=item %cf::CFG	160	=item %cf::CFG
101		161
102	Configuration for the server, loaded from C</etc/crossfire/config>, or	162	Configuration for the server, loaded from C</etc/crossfire/config>, or
103	from wherever your confdir points to.	163	from wherever your confdir points to.
		164
		165	=item cf::wait_for_tick, cf::wait_for_tick_begin
		166
		167	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		168	returns directly I<after> the tick processing (and consequently, can only wake one process
		169	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
104		170
105	=back	171	=back
106		172
107	=cut	173	=cut
108		174
109	BEGIN {	175	BEGIN {
110	*CORE::GLOBAL::warn = sub {	176	*CORE::GLOBAL::warn = sub {
111	my $msg = join "", @_;	177	my $msg = join "", @_;
112	utf8::encode $msg;
113		178
114	$msg .= "\n"	179	$msg .= "\n"
115	unless $msg =~ /\n$/;	180	unless $msg =~ /\n$/;
116		181
		182	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		183
		184	utf8::encode $msg;
117	LOG llevError, "cfperl: $msg";	185	LOG llevError, $msg;
118	};	186	};
119	}	187	}
120		188
121	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	189	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
122	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	190	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
123	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	191	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
124	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	192	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
125	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	193	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		194	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
126	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	195	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
127		196
128	# we bless all objects into (empty) derived classes to force a method lookup	197	# we bless all objects into (empty) derived classes to force a method lookup
129	# within the Safe compartment.	198	# within the Safe compartment.
130	for my $pkg (qw(	199	for my $pkg (qw(
131	cf::global cf::attachable	200	cf::global cf::attachable
…		…
140		209
141	$Event::DIED = sub {	210	$Event::DIED = sub {
142	warn "error in event callback: @_";	211	warn "error in event callback: @_";
143	};	212	};
144		213
145	my %ext_pkg;	214	#############################################################################
146	my @exts;
147	my @hook;
148		215
149	=head2 UTILITY FUNCTIONS	216	=head2 UTILITY FUNCTIONS
150		217
151	=over 4	218	=over 4
152		219
153	=cut	220	=item dumpval $ref
154		221
155	use JSON::Syck (); # TODO# replace by JSON::PC once working	222	=cut
		223
		224	sub dumpval {
		225	eval {
		226	local $SIG{__DIE__};
		227	my $d;
		228	if (1) {
		229	$d = new Data::Dumper([$_[0]], ["*var"]);
		230	$d->Terse(1);
		231	$d->Indent(2);
		232	$d->Quotekeys(0);
		233	$d->Useqq(1);
		234	#$d->Bless(...);
		235	$d->Seen($_[1]) if @_ > 1;
		236	$d = $d->Dump();
		237	}
		238	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		239	$d
		240	} || "[unable to dump $_[0]: '$@']";
		241	}
156		242
157	=item $ref = cf::from_json $json	243	=item $ref = cf::from_json $json
158		244
159	Converts a JSON string into the corresponding perl data structure.	245	Converts a JSON string into the corresponding perl data structure.
160		246
161	=cut
162
163	sub from_json($) {
164	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
165	JSON::Syck::Load $_[0]
166	}
167
168	=item $json = cf::to_json $ref	247	=item $json = cf::to_json $ref
169		248
170	Converts a perl data structure into its JSON representation.	249	Converts a perl data structure into its JSON representation.
171		250
172	=cut	251	=cut
173		252
174	sub to_json($) {	253	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
175	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
176	JSON::Syck::Dump $_[0]
177	}
178		254
179	# main coro must never ever "block" except in Event	255	sub to_json ($) { $json_coder->encode ($_[0]) }
180	# sync_job ensures this by running the job in a coroutine	256	sub from_json ($) { $json_coder->decode ($_[0]) }
181	# and waiting in Event while the server is otherwise frozen	257
		258	=item cf::lock_wait $string
		259
		260	Wait until the given lock is available. See cf::lock_acquire.
		261
		262	=item my $lock = cf::lock_acquire $string
		263
		264	Wait until the given lock is available and then acquires it and returns
		265	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		266	for example when the coroutine gets canceled), the lock is automatically
		267	returned.
		268
		269	Lock names should begin with a unique identifier (for example, cf::map::find
		270	uses map_find and cf::map::load uses map_load).
		271
		272	=item $locked = cf::lock_active $string
		273
		274	Return true if the lock is currently active, i.e. somebody has locked it.
		275
		276	=cut
		277
		278	our %LOCK;
		279
		280	sub lock_wait($) {
		281	my ($key) = @_;
		282
		283	# wait for lock, if any
		284	while ($LOCK{$key}) {
		285	push @{ $LOCK{$key} }, $Coro::current;
		286	Coro::schedule;
		287	}
		288	}
		289
		290	sub lock_acquire($) {
		291	my ($key) = @_;
		292
		293	# wait, to be sure we are not locked
		294	lock_wait $key;
		295
		296	$LOCK{$key} = [];
		297
		298	Coro::guard {
		299	# wake up all waiters, to be on the safe side
		300	$_->ready for @{ delete $LOCK{$key} };
		301	}
		302	}
		303
		304	sub lock_active($) {
		305	my ($key) = @_;
		306
		307	! ! $LOCK{$key}
		308	}
		309
		310	sub freeze_mainloop {
		311	return unless $TICK_WATCHER->is_active;
		312
		313	my $guard = Coro::guard {
		314	$TICK_WATCHER->start;
		315	};
		316	$TICK_WATCHER->stop;
		317	$guard
		318	}
		319
		320	=item cf::async { BLOCK }
		321
		322	Currently the same as Coro::async_pool, meaning you cannot use
		323	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		324	thing you are allowed to do is call C<prio> on it.
		325
		326	=cut
		327
		328	BEGIN { *async = \&Coro::async_pool }
		329
		330	=item cf::sync_job { BLOCK }
		331
		332	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		333	is always able to handle events or runnable, as Crossfire TRT is only
		334	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		335	acceptable.
		336
		337	If it must be done, put the blocking parts into C<sync_job>. This will run
		338	the given BLOCK in another coroutine while waiting for the result. The
		339	server will be frozen during this time, so the block should either finish
		340	fast or be very important.
		341
		342	=cut
		343
182	sub sync_job(&) {	344	sub sync_job(&) {
183	my ($job) = @_;	345	my ($job) = @_;
184		346
185	my $busy = 1;
186	my @res;
187
188	local $FREEZE = 1;
189
190	my $coro = Coro::async {
191	@res = eval { $job->() };
192	warn $@ if $@;
193	undef $busy;
194	};
195
196	if ($Coro::current == $Coro::main) {	347	if ($Coro::current == $Coro::main) {
		348	my $time = Event::time;
		349
		350	# this is the main coro, too bad, we have to block
		351	# till the operation succeeds, freezing the server :/
		352
		353	# TODO: use suspend/resume instead
		354	# (but this is cancel-safe)
		355	my $freeze_guard = freeze_mainloop;
		356
		357	my $busy = 1;
		358	my @res;
		359
		360	(async {
		361	@res = eval { $job->() };
		362	warn $@ if $@;
		363	undef $busy;
197	$coro->prio (Coro::PRIO_MAX);	364	})->prio (Coro::PRIO_MAX);
		365
198	while ($busy) {	366	while ($busy) {
199	Coro::cede_notself;	367	Coro::cede or Event::one_event;
200	Event::one_event unless Coro::nready;
201	}	368	}
		369
		370	$time = Event::time - $time;
		371
		372	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		373	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		374
		375	$tick_start += $time; # do not account sync jobs to server load
		376
		377	wantarray ? @res : $res[0]
202	} else {	378	} else {
203	$coro->join;	379	# we are in another coroutine, how wonderful, everything just works
		380
		381	$job->()
204	}	382	}
205
206	wantarray ? @res : $res[0]
207	}	383	}
208		384
209	=item $coro = cf::coro { BLOCK }	385	=item $coro = cf::async_ext { BLOCK }
210		386
211	Creates and returns a new coro. This coro is automcatially being canceled	387	Like async, but this coro is automatically being canceled when the
212	when the extension calling this is being unloaded.	388	extension calling this is being unloaded.
213		389
214	=cut	390	=cut
215		391
216	sub coro(&) {	392	sub async_ext(&) {
217	my $cb = shift;	393	my $cb = shift;
218		394
219	my $coro; $coro = async {	395	my $coro = &Coro::async ($cb);
220	eval {
221	$cb->();
222	};
223	warn $@ if $@;
224	};
225		396
226	$coro->on_destroy (sub {	397	$coro->on_destroy (sub {
227	delete $EXT_CORO{$coro+0};	398	delete $EXT_CORO{$coro+0};
228	});	399	});
229	$EXT_CORO{$coro+0} = $coro;	400	$EXT_CORO{$coro+0} = $coro;
230		401
231	$coro	402	$coro
232	}	403	}
233		404
		405	=item fork_call { }, $args
		406
		407	Executes the given code block with the given arguments in a seperate
		408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
		411
		412	=cut
		413
		414	sub _store_scalar {
		415	open my $fh, ">", \my $buf
		416	or die "fork_call: cannot open fh-to-buf in child : $!";
		417	Storable::store_fd $_[0], $fh;
		418	close $fh;
		419
		420	$buf
		421	}
		422
		423	sub fork_call(&@) {
		424	my ($cb, @args) = @_;
		425
		426	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		427	# or die "socketpair: $!";
		428	pipe my $fh1, my $fh2
		429	or die "pipe: $!";
		430
		431	if (my $pid = fork) {
		432	close $fh2;
		433
		434	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		435	warn "pst<$res>" unless $res =~ /^pst/;
		436	$res = Coro::Storable::thaw $res;
		437
		438	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		439
		440	Carp::confess $$res unless "ARRAY" eq ref $res;
		441
		442	return wantarray ? @$res : $res->[-1];
		443	} else {
		444	reset_signals;
		445	local $SIG{__WARN__};
		446	local $SIG{__DIE__};
		447	# just in case, this hack effectively disables event
		448	# in the child. cleaner and slower would be canceling all watchers,
		449	# but this works for the time being.
		450	local $Coro::idle;
		451	$Coro::current->prio (Coro::PRIO_MAX);
		452
		453	eval {
		454	close $fh1;
		455
		456	my @res = eval { $cb->(@args) };
		457
		458	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		459	close $fh2;
		460	};
		461
		462	warn $@ if $@;
		463	_exit 0;
		464	}
		465	}
		466
		467	=item $value = cf::db_get $family => $key
		468
		469	Returns a single value from the environment database.
		470
		471	=item cf::db_put $family => $key => $value
		472
		473	Stores the given C<$value> in the family. It can currently store binary
		474	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		475
		476	=cut
		477
		478	our $DB;
		479
		480	sub db_init {
		481	unless ($DB) {
		482	$DB = BDB::db_create $DB_ENV;
		483
		484	cf::sync_job {
		485	eval {
		486	$DB->set_flags (BDB::CHKSUM);
		487
		488	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		489	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		490	cf::cleanup "db_open(db): $!" if $!;
		491	};
		492	cf::cleanup "db_open(db): $@" if $@;
		493	};
		494	}
		495	}
		496
		497	sub db_get($$) {
		498	my $key = "$_[0]/$_[1]";
		499
		500	cf::sync_job {
		501	BDB::db_get $DB, undef, $key, my $data;
		502
		503	$! ? ()
		504	: $data
		505	}
		506	}
		507
		508	sub db_put($$$) {
		509	BDB::dbreq_pri 4;
		510	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		511	}
		512
		513	=item cf::cache $id => [$paths...], $processversion => $process
		514
		515	Generic caching function that returns the value of the resource $id,
		516	caching and regenerating as required.
		517
		518	This function can block.
		519
		520	=cut
		521
		522	sub cache {
		523	my ($id, $src, $processversion, $process) = @_;
		524
		525	my $meta =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	aio_stat $_
		530	and Carp::croak "$_: $!";
		531
		532	($_, (stat _)[7,9])
		533	} @$src;
		534
		535	my $dbmeta = db_get cache => "$id/meta";
		536	if ($dbmeta ne $meta) {
		537	# changed, we may need to process
		538
		539	my @data;
		540	my $md5;
		541
		542	for (0 .. $#$src) {
		543	0 <= aio_load $src->[$_], $data[$_]
		544	or Carp::croak "$src->[$_]: $!";
		545	}
		546
		547	# if processing is expensive, check
		548	# checksum first
		549	if (1) {
		550	$md5 =
		551	join "\x00",
		552	$processversion,
		553	map {
		554	Coro::cede;
		555	($src->[$_], Digest::MD5::md5_hex $data[$_])
		556	} 0.. $#$src;
		557
		558
		559	my $dbmd5 = db_get cache => "$id/md5";
		560	if ($dbmd5 eq $md5) {
		561	db_put cache => "$id/meta", $meta;
		562
		563	return db_get cache => "$id/data";
		564	}
		565	}
		566
		567	my $t1 = Time::HiRes::time;
		568	my $data = $process->(\@data);
		569	my $t2 = Time::HiRes::time;
		570
		571	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		572
		573	db_put cache => "$id/data", $data;
		574	db_put cache => "$id/md5" , $md5;
		575	db_put cache => "$id/meta", $meta;
		576
		577	return $data;
		578	}
		579
		580	db_get cache => "$id/data"
		581	}
		582
		583	=item cf::datalog type => key => value, ...
		584
		585	Log a datalog packet of the given type with the given key-value pairs.
		586
		587	=cut
		588
		589	sub datalog($@) {
		590	my ($type, %kv) = @_;
		591	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		592	}
		593
234	=back	594	=back
235		595
236	=cut	596	=cut
237		597
238	#############################################################################	598	#############################################################################
…		…
243	attach callbacks/event handlers (a collection of which is called an "attachment")	603	attach callbacks/event handlers (a collection of which is called an "attachment")
244	to it. All such attachable objects support the following methods.	604	to it. All such attachable objects support the following methods.
245		605
246	In the following description, CLASS can be any of C<global>, C<object>	606	In the following description, CLASS can be any of C<global>, C<object>
247	C<player>, C<client> or C<map> (i.e. the attachable objects in	607	C<player>, C<client> or C<map> (i.e. the attachable objects in
248	crossfire+).	608	Crossfire TRT).
249		609
250	=over 4	610	=over 4
251		611
252	=item $attachable->attach ($attachment, key => $value...)	612	=item $attachable->attach ($attachment, key => $value...)
253		613
…		…
367	our @CB_TYPE = (); # registry for type (cf-object class) based events	727	our @CB_TYPE = (); # registry for type (cf-object class) based events
368	our @CB_MAP = ();	728	our @CB_MAP = ();
369		729
370	my %attachment;	730	my %attachment;
371		731
		732	sub cf::attachable::thawer_merge {
		733	# simply override everything except _meta
		734	local $_[0]{_meta};
		735	%{$_[0]} = %{$_[1]};
		736	}
		737
372	sub _attach_cb($$$$) {	738	sub _attach_cb($$$$) {
373	my ($registry, $event, $prio, $cb) = @_;	739	my ($registry, $event, $prio, $cb) = @_;
374		740
375	use sort 'stable';	741	use sort 'stable';
376		742
…		…
410	$registry = $CB_TYPE[$object_type] ||= [];	776	$registry = $CB_TYPE[$object_type] ||= [];
411		777
412	} elsif ($type eq "subtype") {	778	} elsif ($type eq "subtype") {
413	defined $object_type or Carp::croak "subtype specified without type";	779	defined $object_type or Carp::croak "subtype specified without type";
414	my $object_subtype = shift @arg;	780	my $object_subtype = shift @arg;
415	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	781	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
416		782
417	} elsif ($type eq "package") {	783	} elsif ($type eq "package") {
418	my $pkg = shift @arg;	784	my $pkg = shift @arg;
419		785
420	while (my ($name, $id) = each %cb_id) {	786	while (my ($name, $id) = each %cb_id) {
…		…
449	_attach $registry, $klass, @attach;	815	_attach $registry, $klass, @attach;
450	}	816	}
451		817
452	$obj->{$name} = \%arg;	818	$obj->{$name} = \%arg;
453	} else {	819	} else {
454	warn "object uses attachment '$name' that is not available, postponing.\n";	820	warn "object uses attachment '$name' which is not available, postponing.\n";
455	}	821	}
456		822
457	$obj->{_attachment}{$name} = undef;	823	$obj->{_attachment}{$name} = undef;
458	}	824	}
459		825
…		…
461	if (ref $_[0]) {	827	if (ref $_[0]) {
462	_object_attach @_;	828	_object_attach @_;
463	} else {	829	} else {
464	_attach shift->_attach_registry, @_;	830	_attach shift->_attach_registry, @_;
465	}	831	}
		832	_recalc_want;
466	};	833	};
467		834
468	# all those should be optimised	835	# all those should be optimised
469	sub cf::attachable::detach {	836	sub cf::attachable::detach {
470	my ($obj, $name) = @_;	837	my ($obj, $name) = @_;
…		…
473	delete $obj->{_attachment}{$name};	840	delete $obj->{_attachment}{$name};
474	reattach ($obj);	841	reattach ($obj);
475	} else {	842	} else {
476	Carp::croak "cannot, currently, detach class attachments";	843	Carp::croak "cannot, currently, detach class attachments";
477	}	844	}
		845	_recalc_want;
478	};	846	};
479		847
480	sub cf::attachable::attached {	848	sub cf::attachable::attached {
481	my ($obj, $name) = @_;	849	my ($obj, $name) = @_;
482		850
…		…
547	# object support	915	# object support
548		916
549	sub reattach {	917	sub reattach {
550	# basically do the same as instantiate, without calling instantiate	918	# basically do the same as instantiate, without calling instantiate
551	my ($obj) = @_;	919	my ($obj) = @_;
		920
		921	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
552		922
553	my $registry = $obj->registry;	923	my $registry = $obj->registry;
554		924
555	@$registry = ();	925	@$registry = ();
556		926
…		…
603	$filename, length $$rdata, scalar @$objs;	973	$filename, length $$rdata, scalar @$objs;
604		974
605	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	975	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
606	chmod SAVE_MODE, $fh;	976	chmod SAVE_MODE, $fh;
607	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	977	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
608	aio_fsync $fh;	978	aio_fsync $fh if $cf::USE_FSYNC;
609	close $fh;	979	close $fh;
610		980
611	if (@$objs) {	981	if (@$objs) {
612	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	982	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
613	chmod SAVE_MODE, $fh;	983	chmod SAVE_MODE, $fh;
614	my $data = Storable::nfreeze { version => 1, objs => $objs };	984	my $data = Storable::nfreeze { version => 1, objs => $objs };
615	aio_write $fh, 0, (length $data), $data, 0;	985	aio_write $fh, 0, (length $data), $data, 0;
616	aio_fsync $fh;	986	aio_fsync $fh if $cf::USE_FSYNC;
617	close $fh;	987	close $fh;
618	aio_rename "$filename.pst~", "$filename.pst";	988	aio_rename "$filename.pst~", "$filename.pst";
619	}	989	}
620	} else {	990	} else {
621	aio_unlink "$filename.pst";	991	aio_unlink "$filename.pst";
…		…
649	or return;	1019	or return;
650		1020
651	unless (aio_stat "$filename.pst") {	1021	unless (aio_stat "$filename.pst") {
652	(aio_load "$filename.pst", $av) >= 0	1022	(aio_load "$filename.pst", $av) >= 0
653	or return;	1023	or return;
654	$av = eval { (Storable::thaw <$av>)->{objs} };	1024	$av = eval { (Storable::thaw $av)->{objs} };
655	}	1025	}
656		1026
		1027	warn sprintf "loading %s (%d)\n",
		1028	$filename, length $data, scalar @{$av || []};
657	return ($data, $av);	1029	return ($data, $av);
658	}	1030	}
		1031
		1032	=head2 COMMAND CALLBACKS
		1033
		1034	=over 4
		1035
		1036	=cut
659		1037
660	#############################################################################	1038	#############################################################################
661	# command handling &c	1039	# command handling &c
662		1040
663	=item cf::register_command $name => \&callback($ob,$args);	1041	=item cf::register_command $name => \&callback($ob,$args);
…		…
676	push @{ $COMMAND{$name} }, [$caller, $cb];	1054	push @{ $COMMAND{$name} }, [$caller, $cb];
677	}	1055	}
678		1056
679	=item cf::register_extcmd $name => \&callback($pl,$packet);	1057	=item cf::register_extcmd $name => \&callback($pl,$packet);
680		1058
681	Register a callbackf ro execution when the client sends an extcmd packet.	1059	Register a callback for execution when the client sends an (synchronous)
		1060	extcmd packet. Ext commands will be processed in the order they are
		1061	received by the server, like other user commands. The first argument is
		1062	the logged-in player. Ext commands can only be processed after a player
		1063	has logged in successfully.
682		1064
683	If the callback returns something, it is sent back as if reply was being	1065	If the callback returns something, it is sent back as if reply was being
684	called.	1066	called.
685		1067
		1068	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1069
		1070	Register a callback for execution when the client sends an (asynchronous)
		1071	exticmd packet. Exti commands are processed by the server as soon as they
		1072	are received, i.e. out of order w.r.t. other commands. The first argument
		1073	is a client socket. Exti commands can be received anytime, even before
		1074	log-in.
		1075
		1076	If the callback returns something, it is sent back as if reply was being
		1077	called.
		1078
686	=cut	1079	=cut
687		1080
688	sub register_extcmd {	1081	sub register_extcmd {
689	my ($name, $cb) = @_;	1082	my ($name, $cb) = @_;
690		1083
691	my $caller = caller;
692	#warn "registering extcmd '$name' to '$caller'";
693
694	$EXTCMD{$name} = [$cb, $caller];	1084	$EXTCMD{$name} = $cb;
		1085	}
		1086
		1087	sub register_exticmd {
		1088	my ($name, $cb) = @_;
		1089
		1090	$EXTICMD{$name} = $cb;
695	}	1091	}
696		1092
697	cf::player->attach (	1093	cf::player->attach (
698	on_command => sub {	1094	on_command => sub {
699	my ($pl, $name, $params) = @_;	1095	my ($pl, $name, $params) = @_;
…		…
708	cf::override;	1104	cf::override;
709	},	1105	},
710	on_extcmd => sub {	1106	on_extcmd => sub {
711	my ($pl, $buf) = @_;	1107	my ($pl, $buf) = @_;
712		1108
713	my $msg = eval { from_json $buf };	1109	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
714		1110
715	if (ref $msg) {	1111	if (ref $msg) {
716	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1112	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
717	if (my %reply = $cb->[0]->($pl, $msg)) {	1113	if (my %reply = $cb->($pl, $msg)) {
718	$pl->ext_reply ($msg->{msgid}, %reply);	1114	$pl->ext_reply ($msg->{msgid}, %reply);
719	}	1115	}
720	}	1116	}
721	} else {	1117	} else {
722	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1118	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
724		1120
725	cf::override;	1121	cf::override;
726	},	1122	},
727	);	1123	);
728		1124
		1125	sub load_extensions {
		1126	cf::sync_job {
		1127	my %todo;
		1128
		1129	for my $path (<$LIBDIR/*.ext>) {
		1130	next unless -r $path;
		1131
		1132	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1133	my $base = $1;
		1134	my $pkg = $1;
		1135	$pkg =~ s/[^[:word:]]/_/g;
		1136	$pkg = "ext::$pkg";
		1137
		1138	open my $fh, "<:utf8", $path
		1139	or die "$path: $!";
		1140
		1141	my $source = do { local $/; <$fh> };
		1142
		1143	my %ext = (
		1144	path => $path,
		1145	base => $base,
		1146	pkg => $pkg,
		1147	);
		1148
		1149	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1150	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1151
		1152	$ext{source} =
		1153	"package $pkg; use strict; use utf8;\n"
		1154	. "#line 1 \"$path\"\n{\n"
		1155	. $source
		1156	. "\n};\n1";
		1157
		1158	$todo{$base} = \%ext;
		1159	}
		1160
		1161	my %done;
		1162	while (%todo) {
		1163	my $progress;
		1164
		1165	while (my ($k, $v) = each %todo) {
		1166	for (split /,\s*/, $v->{meta}{depends}) {
		1167	goto skip
		1168	unless exists $done{$_};
		1169	}
		1170
		1171	warn "... loading '$k' into '$v->{pkg}'\n";
		1172
		1173	unless (eval $v->{source}) {
		1174	my $msg = $@ ? "$v->{path}: $@\n"
		1175	: "$v->{base}: extension inactive.\n";
		1176
		1177	if (exists $v->{meta}{mandatory}) {
		1178	warn $msg;
		1179	warn "mandatory extension failed to load, exiting.\n";
		1180	exit 1;
		1181	}
		1182
		1183	warn $msg;
		1184	}
		1185
		1186	$done{$k} = delete $todo{$k};
		1187	push @EXTS, $v->{pkg};
		1188	$progress = 1;
		1189	}
		1190
		1191	skip:
		1192	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1193	unless $progress;
		1194	}
		1195	};
		1196	}
		1197
		1198	#############################################################################
		1199
		1200	=back
		1201
		1202	=head2 CORE EXTENSIONS
		1203
		1204	Functions and methods that extend core crossfire objects.
		1205
		1206	=cut
		1207
		1208	package cf::player;
		1209
		1210	use Coro::AIO;
		1211
		1212	=head3 cf::player
		1213
		1214	=over 4
		1215
		1216	=item cf::player::find $login
		1217
		1218	Returns the given player object, loading it if necessary (might block).
		1219
		1220	=cut
		1221
		1222	sub playerdir($) {
		1223	"$PLAYERDIR/"
		1224	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1225	}
		1226
		1227	sub path($) {
		1228	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1229
		1230	(playerdir $login) . "/playerdata"
		1231	}
		1232
		1233	sub find_active($) {
		1234	$cf::PLAYER{$_[0]}
		1235	and $cf::PLAYER{$_[0]}->active
		1236	and $cf::PLAYER{$_[0]}
		1237	}
		1238
		1239	sub exists($) {
		1240	my ($login) = @_;
		1241
		1242	$cf::PLAYER{$login}
		1243	or cf::sync_job { !aio_stat path $login }
		1244	}
		1245
		1246	sub find($) {
		1247	return $cf::PLAYER{$_[0]} || do {
		1248	my $login = $_[0];
		1249
		1250	my $guard = cf::lock_acquire "user_find:$login";
		1251
		1252	$cf::PLAYER{$_[0]} || do {
		1253	# rename old playerfiles to new ones
		1254	#TODO: remove when no longer required
		1255	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1256	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1257	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1258	aio_unlink +(playerdir $login) . "/$login.pl";
		1259
		1260	my $pl = load_pl path $login
		1261	or return;
		1262	$cf::PLAYER{$login} = $pl
		1263	}
		1264	}
		1265	}
		1266
		1267	sub save($) {
		1268	my ($pl) = @_;
		1269
		1270	return if $pl->{deny_save};
		1271
		1272	my $path = path $pl;
		1273	my $guard = cf::lock_acquire "user_save:$path";
		1274
		1275	return if $pl->{deny_save};
		1276
		1277	aio_mkdir playerdir $pl, 0770;
		1278	$pl->{last_save} = $cf::RUNTIME;
		1279
		1280	$pl->save_pl ($path);
		1281	Coro::cede;
		1282	}
		1283
		1284	sub new($) {
		1285	my ($login) = @_;
		1286
		1287	my $self = create;
		1288
		1289	$self->ob->name ($login);
		1290	$self->{deny_save} = 1;
		1291
		1292	$cf::PLAYER{$login} = $self;
		1293
		1294	$self
		1295	}
		1296
		1297	=item $pl->quit_character
		1298
		1299	Nukes the player without looking back. If logged in, the connection will
		1300	be destroyed. May block for a long time.
		1301
		1302	=cut
		1303
		1304	sub quit_character {
		1305	my ($pl) = @_;
		1306
		1307	my $name = $pl->ob->name;
		1308
		1309	$pl->{deny_save} = 1;
		1310	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1311
		1312	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1313	$pl->deactivate;
		1314	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1315	$pl->ns->destroy if $pl->ns;
		1316
		1317	my $path = playerdir $pl;
		1318	my $temp = "$path~$cf::RUNTIME~deleting~";
		1319	aio_rename $path, $temp;
		1320	delete $cf::PLAYER{$pl->ob->name};
		1321	$pl->destroy;
		1322
		1323	my $prefix = qr<^~\Q$name\E/>;
		1324
		1325	# nuke player maps
		1326	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1327
		1328	IO::AIO::aio_rmtree $temp;
		1329	}
		1330
		1331	=item $pl->kick
		1332
		1333	Kicks a player out of the game. This destroys the connection.
		1334
		1335	=cut
		1336
		1337	sub kick {
		1338	my ($pl, $kicker) = @_;
		1339
		1340	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1341	$pl->killer ("kicked");
		1342	$pl->ns->destroy;
		1343	}
		1344
		1345	=item cf::player::list_logins
		1346
		1347	Returns am arrayref of all valid playernames in the system, can take a
		1348	while and may block, so not sync_job-capable, ever.
		1349
		1350	=cut
		1351
		1352	sub list_logins {
		1353	my $dirs = aio_readdir $PLAYERDIR
		1354	or return [];
		1355
		1356	my @logins;
		1357
		1358	for my $login (@$dirs) {
		1359	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1360	aio_read $fh, 0, 512, my $buf, 0 or next;
		1361	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1362
		1363	utf8::decode $login;
		1364	push @logins, $login;
		1365	}
		1366
		1367	\@logins
		1368	}
		1369
		1370	=item $player->maps
		1371
		1372	Returns an arrayref of map paths that are private for this
		1373	player. May block.
		1374
		1375	=cut
		1376
		1377	sub maps($) {
		1378	my ($pl) = @_;
		1379
		1380	$pl = ref $pl ? $pl->ob->name : $pl;
		1381
		1382	my $files = aio_readdir playerdir $pl
		1383	or return;
		1384
		1385	my @paths;
		1386
		1387	for (@$files) {
		1388	utf8::decode $_;
		1389	next if /\.(?:pl|pst)$/;
		1390	next unless /^$PATH_SEP/o;
		1391
		1392	push @paths, cf::map::normalise "~$pl/$_";
		1393	}
		1394
		1395	\@paths
		1396	}
		1397
		1398	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1399
		1400	Expand crossfire pod fragments into protocol xml.
		1401
		1402	=cut
		1403
		1404	sub expand_cfpod {
		1405	((my $self), (local $_)) = @_;
		1406
		1407	# escape & and <
		1408	s/&/&amp;/g;
		1409	s/(?<![BIUGH])</&lt;/g;
		1410
		1411	# this is buggy, it needs to properly take care of nested <'s
		1412
		1413	1 while
		1414	# replace B<>, I<>, U<> etc.
		1415	s/B<([^\>]*)>/<b>$1<\/b>/
		1416	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1417	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1418	# replace G<male|female> tags
		1419	|| s{G<([^>|]*)\|([^>]*)>}{
		1420	$self->gender ? $2 : $1
		1421	}ge
		1422	# replace H<hint text>
		1423	|| s{H<([^\>]*)>}
		1424	{
		1425	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1426	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1427	"")
		1428	[$self->{hintmode}]
		1429	}ge;
		1430
		1431	# create single paragraphs (very hackish)
		1432	s/(?<=\S)\n(?=\w)/ /g;
		1433
		1434	# compress some whitespace
		1435	s/\s+\n/\n/g; # ws line-ends
		1436	s/\n\n+/\n/g; # double lines
		1437	s/^\n+//; # beginning lines
		1438	s/\n+$//; # ending lines
		1439
		1440	$_
		1441	}
		1442
		1443	sub hintmode {
		1444	$_[0]{hintmode} = $_[1] if @_ > 1;
		1445	$_[0]{hintmode}
		1446	}
		1447
		1448	=item $player->ext_reply ($msgid, %msg)
		1449
		1450	Sends an ext reply to the player.
		1451
		1452	=cut
		1453
		1454	sub ext_reply($$%) {
		1455	my ($self, $id, %msg) = @_;
		1456
		1457	$msg{msgid} = $id;
		1458	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1459	}
		1460
		1461	=item $player->ext_event ($type, %msg)
		1462
		1463	Sends an ext event to the client.
		1464
		1465	=cut
		1466
		1467	sub ext_event($$%) {
		1468	my ($self, $type, %msg) = @_;
		1469
		1470	$self->ns->ext_event ($type, %msg);
		1471	}
		1472
		1473	=head3 cf::region
		1474
		1475	=over 4
		1476
		1477	=cut
		1478
		1479	package cf::region;
		1480
		1481	=item cf::region::find_by_path $path
		1482
		1483	Tries to decuce the likely region for a map knowing only its path.
		1484
		1485	=cut
		1486
		1487	sub find_by_path($) {
		1488	my ($path) = @_;
		1489
		1490	my ($match, $specificity);
		1491
		1492	for my $region (list) {
		1493	if ($region->match && $path =~ $region->match) {
		1494	($match, $specificity) = ($region, $region->specificity)
		1495	if $region->specificity > $specificity;
		1496	}
		1497	}
		1498
		1499	$match
		1500	}
		1501
		1502	=back
		1503
		1504	=head3 cf::map
		1505
		1506	=over 4
		1507
		1508	=cut
		1509
		1510	package cf::map;
		1511
		1512	use Fcntl;
		1513	use Coro::AIO;
		1514
		1515	use overload
		1516	'""' => \&as_string,
		1517	fallback => 1;
		1518
		1519	our $MAX_RESET = 3600;
		1520	our $DEFAULT_RESET = 3000;
		1521
		1522	sub generate_random_map {
		1523	my ($self, $rmp) = @_;
		1524	# mit "rum" bekleckern, nicht
		1525	$self->_create_random_map (
		1526	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1527	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1528	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1529	$rmp->{exit_on_final_map},
		1530	$rmp->{xsize}, $rmp->{ysize},
		1531	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1532	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1533	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1534	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1535	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1536	(cf::region::find $rmp->{region}), $rmp->{custom}
		1537	)
		1538	}
		1539
		1540	=item cf::map->register ($regex, $prio)
		1541
		1542	Register a handler for the map path matching the given regex at the
		1543	givne priority (higher is better, built-in handlers have priority 0, the
		1544	default).
		1545
		1546	=cut
		1547
729	sub register {	1548	sub register {
		1549	my (undef, $regex, $prio) = @_;
		1550	my $pkg = caller;
		1551
		1552	no strict;
		1553	push @{"$pkg\::ISA"}, __PACKAGE__;
		1554
		1555	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1556	}
		1557
		1558	# also paths starting with '/'
		1559	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1560
		1561	sub thawer_merge {
730	my ($base, $pkg) = @_;	1562	my ($self, $merge) = @_;
731		1563
732	#TODO	1564	# we have to keep some variables in memory intact
733	}	1565	local $self->{path};
		1566	local $self->{load_path};
734		1567
735	sub load_extension {	1568	$self->SUPER::thawer_merge ($merge);
		1569	}
		1570
		1571	sub normalise {
736	my ($path) = @_;	1572	my ($path, $base) = @_;
737		1573
738	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1574	$path = "$path"; # make sure its a string
739	my $base = $1;
740	my $pkg = $1;
741	$pkg =~ s/[^[:word:]]/_/g;
742	$pkg = "ext::$pkg";
743		1575
744	warn "loading '$path' into '$pkg'\n";	1576	$path =~ s/\.map$//;
745		1577
746	open my $fh, "<:utf8", $path	1578	# map plan:
747	or die "$path: $!";	1579	#
		1580	# /! non-realised random map exit (special hack!)
		1581	# {... are special paths that are not being touched
		1582	# ?xxx/... are special absolute paths
		1583	# ?random/... random maps
		1584	# /... normal maps
		1585	# ~user/... per-player map of a specific user
748		1586
749	my $source =	1587	$path =~ s/$PATH_SEP/\//go;
750	"package $pkg; use strict; use utf8;\n"
751	. "#line 1 \"$path\"\n{\n"
752	. (do { local $/; <$fh> })
753	. "\n};\n1";
754		1588
755	eval $source	1589	# treat it as relative path if it starts with
756	or die $@ ? "$path: $@\n"	1590	# something that looks reasonable
757	: "extension disabled.\n";	1591	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1592	$base or Carp::carp "normalise called with relative path and no base: '$path'";
758		1593
759	push @exts, $pkg;	1594	$base =~ s{[^/]+/?$}{};
760	$ext_pkg{$base} = $pkg;	1595	$path = "$base/$path";
761
762	# no strict 'refs';
763	# @{"$pkg\::ISA"} = ext::;
764
765	register $base, $pkg;
766	}
767
768	sub unload_extension {
769	my ($pkg) = @_;
770
771	warn "removing extension $pkg\n";
772
773	# remove hooks
774	#TODO
775	# for my $idx (0 .. $#PLUGIN_EVENT) {
776	# delete $hook[$idx]{$pkg};
777	# }	1596	}
778		1597
779	# remove commands	1598	for ($path) {
780	for my $name (keys %COMMAND) {	1599	redo if s{//}{/};
781	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1600	redo if s{/\.?/}{/};
		1601	redo if s{/[^/]+/\.\./}{/};
		1602	}
782		1603
783	if (@cb) {	1604	$path
784	$COMMAND{$name} = \@cb;	1605	}
		1606
		1607	sub new_from_path {
		1608	my (undef, $path, $base) = @_;
		1609
		1610	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1611
		1612	$path = normalise $path, $base;
		1613
		1614	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1615	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1616	my $self = bless cf::map::new, $pkg;
		1617	$self->{path} = $path; $self->path ($path);
		1618	$self->init; # pass $1 etc.
		1619	return $self;
		1620	}
		1621	}
		1622
		1623	Carp::carp "unable to resolve path '$path' (base '$base').";
		1624	()
		1625	}
		1626
		1627	sub init {
		1628	my ($self) = @_;
		1629
		1630	$self
		1631	}
		1632
		1633	sub as_string {
		1634	my ($self) = @_;
		1635
		1636	"$self->{path}"
		1637	}
		1638
		1639	# the displayed name, this is a one way mapping
		1640	sub visible_name {
		1641	&as_string
		1642	}
		1643
		1644	# the original (read-only) location
		1645	sub load_path {
		1646	my ($self) = @_;
		1647
		1648	"$MAPDIR/$self->{path}.map"
		1649	}
		1650
		1651	# the temporary/swap location
		1652	sub save_path {
		1653	my ($self) = @_;
		1654
		1655	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1656	"$TMPDIR/$path.map"
		1657	}
		1658
		1659	# the unique path, undef == no special unique path
		1660	sub uniq_path {
		1661	my ($self) = @_;
		1662
		1663	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1664	"$UNIQUEDIR/$path"
		1665	}
		1666
		1667	# and all this just because we cannot iterate over
		1668	# all maps in C++...
		1669	sub change_all_map_light {
		1670	my ($change) = @_;
		1671
		1672	$_->change_map_light ($change)
		1673	for grep $_->outdoor, values %cf::MAP;
		1674	}
		1675
		1676	sub decay_objects {
		1677	my ($self) = @_;
		1678
		1679	return if $self->{deny_reset};
		1680
		1681	$self->do_decay_objects;
		1682	}
		1683
		1684	sub unlink_save {
		1685	my ($self) = @_;
		1686
		1687	utf8::encode (my $save = $self->save_path);
		1688	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1689	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1690	}
		1691
		1692	sub load_header_from($) {
		1693	my ($self, $path) = @_;
		1694
		1695	utf8::encode $path;
		1696	#aio_open $path, O_RDONLY, 0
		1697	# or return;
		1698
		1699	$self->_load_header ($path)
		1700	or return;
		1701
		1702	$self->{load_path} = $path;
		1703
		1704	1
		1705	}
		1706
		1707	sub load_header_orig {
		1708	my ($self) = @_;
		1709
		1710	$self->load_header_from ($self->load_path)
		1711	}
		1712
		1713	sub load_header_temp {
		1714	my ($self) = @_;
		1715
		1716	$self->load_header_from ($self->save_path)
		1717	}
		1718
		1719	sub prepare_temp {
		1720	my ($self) = @_;
		1721
		1722	$self->last_access ((delete $self->{last_access})
		1723	|| $cf::RUNTIME); #d#
		1724	# safety
		1725	$self->{instantiate_time} = $cf::RUNTIME
		1726	if $self->{instantiate_time} > $cf::RUNTIME;
		1727	}
		1728
		1729	sub prepare_orig {
		1730	my ($self) = @_;
		1731
		1732	$self->{load_original} = 1;
		1733	$self->{instantiate_time} = $cf::RUNTIME;
		1734	$self->last_access ($cf::RUNTIME);
		1735	$self->instantiate;
		1736	}
		1737
		1738	sub load_header {
		1739	my ($self) = @_;
		1740
		1741	if ($self->load_header_temp) {
		1742	$self->prepare_temp;
785	} else {	1743	} else {
786	delete $COMMAND{$name};	1744	$self->load_header_orig
787	}	1745	or return;
		1746	$self->prepare_orig;
		1747	}
		1748
		1749	$self->{deny_reset} = 1
		1750	if $self->no_reset;
		1751
		1752	$self->default_region (cf::region::find_by_path $self->{path})
		1753	unless $self->default_region;
		1754
788	}	1755	1
		1756	}
789		1757
790	# remove extcmds	1758	sub find;
791	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1759	sub find {
792	delete $EXTCMD{$name};	1760	my ($path, $origin) = @_;
		1761
		1762	$path = normalise $path, $origin && $origin->path;
		1763
		1764	cf::lock_wait "map_find:$path";
		1765
		1766	$cf::MAP{$path} || do {
		1767	my $guard = cf::lock_acquire "map_find:$path";
		1768	my $map = new_from_path cf::map $path
		1769	or return;
		1770
		1771	$map->{last_save} = $cf::RUNTIME;
		1772
		1773	$map->load_header
		1774	or return;
		1775
		1776	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1777	# doing this can freeze the server in a sync job, obviously
		1778	#$cf::WAIT_FOR_TICK->wait;
		1779	$map->reset;
		1780	undef $guard;
		1781	return find $path;
		1782	}
		1783
		1784	$cf::MAP{$path} = $map
		1785	}
		1786	}
		1787
		1788	sub pre_load { }
		1789	sub post_load { }
		1790
		1791	sub load {
		1792	my ($self) = @_;
		1793
		1794	local $self->{deny_reset} = 1; # loading can take a long time
		1795
		1796	my $path = $self->{path};
		1797
793	}	1798	{
		1799	my $guard = cf::lock_acquire "map_load:$path";
794		1800
795	if (my $cb = $pkg->can ("unload")) {	1801	return if $self->in_memory != cf::MAP_SWAPPED;
796	eval {	1802
797	$cb->($pkg);	1803	$self->in_memory (cf::MAP_LOADING);
		1804
		1805	$self->alloc;
		1806
		1807	$self->pre_load;
		1808	Coro::cede;
		1809
		1810	$self->_load_objects ($self->{load_path}, 1)
		1811	or return;
		1812
		1813	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1814	if delete $self->{load_original};
		1815
		1816	if (my $uniq = $self->uniq_path) {
		1817	utf8::encode $uniq;
		1818	if (aio_open $uniq, O_RDONLY, 0) {
		1819	$self->clear_unique_items;
		1820	$self->_load_objects ($uniq, 0);
798	1	1821	}
799	} or warn "$pkg unloaded, but with errors: $@";	1822	}
800	}
801		1823
802	Symbol::delete_package $pkg;	1824	Coro::cede;
803	}	1825	# now do the right thing for maps
		1826	$self->link_multipart_objects;
		1827	$self->difficulty ($self->estimate_difficulty)
		1828	unless $self->difficulty;
		1829	Coro::cede;
804		1830
805	sub load_extensions {	1831	unless ($self->{deny_activate}) {
806	for my $ext (<$LIBDIR/*.ext>) {	1832	$self->decay_objects;
807	next unless -r $ext;	1833	$self->fix_auto_apply;
808	eval {	1834	$self->update_buttons;
809	load_extension $ext;	1835	Coro::cede;
810	1	1836	$self->set_darkness_map;
811	} or warn "$ext not loaded: $@";	1837	Coro::cede;
812	}	1838	$self->activate;
813	}	1839	}
814		1840
815	#############################################################################	1841	$self->in_memory (cf::MAP_IN_MEMORY);
816	# load/save/clean perl data associated with a map	1842	}
817		1843
818	*cf::mapsupport::on_clean = sub {	1844	$self->post_load;
		1845	}
		1846
		1847	sub customise_for {
		1848	my ($self, $ob) = @_;
		1849
		1850	return find "~" . $ob->name . "/" . $self->{path}
		1851	if $self->per_player;
		1852
		1853	# return find "?party/" . $ob->name . "/" . $self->{path}
		1854	# if $self->per_party;
		1855
		1856	$self
		1857	}
		1858
		1859	# find and load all maps in the 3x3 area around a map
		1860	sub load_diag {
819	my ($map) = @_;	1861	my ($map) = @_;
820		1862
821	my $path = $map->tmpname;	1863	my @diag; # diagonal neighbours
822	defined $path or return;
823		1864
824	unlink "$path.pst";	1865	for (0 .. 3) {
825	};	1866	my $neigh = $map->tile_path ($_)
		1867	or next;
		1868	$neigh = find $neigh, $map
		1869	or next;
		1870	$neigh->load;
826		1871
827	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1872	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1873	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1874	}
828		1875
829	#############################################################################	1876	for (@diag) {
830	# load/save perl data associated with player->ob objects	1877	my $neigh = find @$_
831		1878	or next;
832	sub all_objects(@) {	1879	$neigh->load;
833	@_, map all_objects ($_->inv), @_	1880	}
834	}	1881	}
835		1882
836	# TODO: compatibility cruft, remove when no longer needed	1883	sub find_sync {
837	cf::player->attach (	1884	my ($path, $origin) = @_;
838	on_load => sub {
839	my ($pl, $path) = @_;
840		1885
841	for my $o (all_objects $pl->ob) {	1886	cf::sync_job { find $path, $origin }
842	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1887	}
843	$o->set_ob_key_value ("_perl_data");
844		1888
845	%$o = %{ Storable::thaw pack "H*", $value };	1889	sub do_load_sync {
		1890	my ($map) = @_;
		1891
		1892	cf::sync_job { $map->load };
		1893	}
		1894
		1895	our %MAP_PREFETCH;
		1896	our $MAP_PREFETCHER = undef;
		1897
		1898	sub find_async {
		1899	my ($path, $origin) = @_;
		1900
		1901	$path = normalise $path, $origin && $origin->{path};
		1902
		1903	if (my $map = $cf::MAP{$path}) {
		1904	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1905	}
		1906
		1907	undef $MAP_PREFETCH{$path};
		1908	$MAP_PREFETCHER ||= cf::async {
		1909	while (%MAP_PREFETCH) {
		1910	for my $path (keys %MAP_PREFETCH) {
		1911	my $map = find $path
		1912	or next;
		1913	$map->load;
		1914
		1915	delete $MAP_PREFETCH{$path};
846	}	1916	}
847	}	1917	}
		1918	undef $MAP_PREFETCHER;
		1919	};
		1920	$MAP_PREFETCHER->prio (6);
		1921
		1922	()
		1923	}
		1924
		1925	sub save {
		1926	my ($self) = @_;
		1927
		1928	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1929
		1930	$self->{last_save} = $cf::RUNTIME;
		1931
		1932	return unless $self->dirty;
		1933
		1934	my $save = $self->save_path; utf8::encode $save;
		1935	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1936
		1937	$self->{load_path} = $save;
		1938
		1939	return if $self->{deny_save};
		1940
		1941	local $self->{last_access} = $self->last_access;#d#
		1942
		1943	cf::async {
		1944	$_->contr->save for $self->players;
		1945	};
		1946
		1947	if ($uniq) {
		1948	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1949	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1950	} else {
		1951	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
848	},	1952	}
849	);	1953	}
850		1954
851	#############################################################################	1955	sub swap_out {
		1956	my ($self) = @_;
852		1957
853	=head2 CORE EXTENSIONS	1958	# save first because save cedes
		1959	$self->save;
854		1960
855	Functions and methods that extend core crossfire objects.	1961	my $lock = cf::lock_acquire "map_data:" . $self->path;
856		1962
857	=head3 cf::player	1963	return if $self->players;
		1964	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1965	return if $self->{deny_save};
		1966
		1967	$self->clear;
		1968	$self->in_memory (cf::MAP_SWAPPED);
		1969	}
		1970
		1971	sub reset_at {
		1972	my ($self) = @_;
		1973
		1974	# TODO: safety, remove and allow resettable per-player maps
		1975	return 1e99 if $self->{deny_reset};
		1976
		1977	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1978	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1979
		1980	$time + $to
		1981	}
		1982
		1983	sub should_reset {
		1984	my ($self) = @_;
		1985
		1986	$self->reset_at <= $cf::RUNTIME
		1987	}
		1988
		1989	sub reset {
		1990	my ($self) = @_;
		1991
		1992	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1993
		1994	return if $self->players;
		1995
		1996	warn "resetting map ", $self->path;
		1997
		1998	$self->in_memory (cf::MAP_SWAPPED);
		1999
		2000	# need to save uniques path
		2001	unless ($self->{deny_save}) {
		2002	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2003
		2004	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2005	if $uniq;
		2006	}
		2007
		2008	delete $cf::MAP{$self->path};
		2009
		2010	$self->clear;
		2011
		2012	$_->clear_links_to ($self) for values %cf::MAP;
		2013
		2014	$self->unlink_save;
		2015	$self->destroy;
		2016	}
		2017
		2018	my $nuke_counter = "aaaa";
		2019
		2020	sub nuke {
		2021	my ($self) = @_;
		2022
		2023	delete $cf::MAP{$self->path};
		2024
		2025	$self->unlink_save;
		2026
		2027	bless $self, "cf::map";
		2028	delete $self->{deny_reset};
		2029	$self->{deny_save} = 1;
		2030	$self->reset_timeout (1);
		2031	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2032
		2033	$cf::MAP{$self->path} = $self;
		2034
		2035	$self->reset; # polite request, might not happen
		2036	}
		2037
		2038	=item $maps = cf::map::tmp_maps
		2039
		2040	Returns an arrayref with all map paths of currently instantiated and saved
		2041	maps. May block.
		2042
		2043	=cut
		2044
		2045	sub tmp_maps() {
		2046	[
		2047	map {
		2048	utf8::decode $_;
		2049	/\.map$/
		2050	? normalise $_
		2051	: ()
		2052	} @{ aio_readdir $TMPDIR or [] }
		2053	]
		2054	}
		2055
		2056	=item $maps = cf::map::random_maps
		2057
		2058	Returns an arrayref with all map paths of currently instantiated and saved
		2059	random maps. May block.
		2060
		2061	=cut
		2062
		2063	sub random_maps() {
		2064	[
		2065	map {
		2066	utf8::decode $_;
		2067	/\.map$/
		2068	? normalise "?random/$_"
		2069	: ()
		2070	} @{ aio_readdir $RANDOMDIR or [] }
		2071	]
		2072	}
		2073
		2074	=item cf::map::unique_maps
		2075
		2076	Returns an arrayref of paths of all shared maps that have
		2077	instantiated unique items. May block.
		2078
		2079	=cut
		2080
		2081	sub unique_maps() {
		2082	[
		2083	map {
		2084	utf8::decode $_;
		2085	/\.map$/
		2086	? normalise $_
		2087	: ()
		2088	} @{ aio_readdir $UNIQUEDIR or [] }
		2089	]
		2090	}
		2091
		2092	package cf;
		2093
		2094	=back
		2095
		2096	=head3 cf::object
		2097
		2098	=cut
		2099
		2100	package cf::object;
858		2101
859	=over 4	2102	=over 4
860		2103
861	=item cf::player::exists $login	2104	=item $ob->inv_recursive
862		2105
863	Returns true when the given account exists.	2106	Returns the inventory of the object _and_ their inventories, recursively.
864		2107
865	=cut	2108	=cut
866		2109
867	sub cf::player::exists($) {	2110	sub inv_recursive_;
868	cf::player::find $_[0]	2111	sub inv_recursive_ {
869	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2112	map { $_, inv_recursive_ $_->inv } @_
870	}	2113	}
871		2114
872	=item $player->ext_reply ($msgid, $msgtype, %msg)	2115	sub inv_recursive {
873		2116	inv_recursive_ inv $_[0]
874	Sends an ext reply to the player.
875
876	=cut
877
878	sub cf::player::ext_reply($$$%) {
879	my ($self, $id, %msg) = @_;
880
881	$msg{msgid} = $id;
882
883	$self->send ("ext " . to_json \%msg);
884	}	2117	}
		2118
		2119	package cf;
885		2120
886	=back	2121	=back
887		2122
888	=head3 cf::object::player	2123	=head3 cf::object::player
889		2124
…		…
905		2140
906	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2141	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
907		2142
908	if ($self->{record_replies}) {	2143	if ($self->{record_replies}) {
909	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2144	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2145
910	} else {	2146	} else {
		2147	my $pl = $self->contr;
		2148
		2149	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2150	my $diag = $pl->{npc_dialog};
		2151	$diag->{pl}->ext_reply (
		2152	$diag->{id},
		2153	msgtype => "reply",
		2154	msg => $diag->{pl}->expand_cfpod ($msg),
		2155	add_topics => []
		2156	);
		2157
		2158	} else {
911	$msg = $npc->name . " says: $msg" if $npc;	2159	$msg = $npc->name . " says: $msg" if $npc;
912	$self->message ($msg, $flags);	2160	$self->message ($msg, $flags);
		2161	}
913	}	2162	}
914	}	2163	}
915		2164
916	=item $player_object->may ("access")	2165	=item $player_object->may ("access")
917		2166
…		…
927	(ref $cf::CFG{"may_$access"}	2176	(ref $cf::CFG{"may_$access"}
928	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2177	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
929	: $cf::CFG{"may_$access"})	2178	: $cf::CFG{"may_$access"})
930	}	2179	}
931		2180
		2181	=item $player_object->enter_link
		2182
		2183	Freezes the player and moves him/her to a special map (C<{link}>).
		2184
		2185	The player should be reasonably safe there for short amounts of time. You
		2186	I<MUST> call C<leave_link> as soon as possible, though.
		2187
		2188	Will never block.
		2189
		2190	=item $player_object->leave_link ($map, $x, $y)
		2191
		2192	Moves the player out of the special C<{link}> map onto the specified
		2193	map. If the map is not valid (or omitted), the player will be moved back
		2194	to the location he/she was before the call to C<enter_link>, or, if that
		2195	fails, to the emergency map position.
		2196
		2197	Might block.
		2198
		2199	=cut
		2200
		2201	sub link_map {
		2202	unless ($LINK_MAP) {
		2203	$LINK_MAP = cf::map::find "{link}"
		2204	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2205	$LINK_MAP->load;
		2206	}
		2207
		2208	$LINK_MAP
		2209	}
		2210
		2211	sub cf::object::player::enter_link {
		2212	my ($self) = @_;
		2213
		2214	$self->deactivate_recursive;
		2215
		2216	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2217
		2218	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2219	if $self->map && $self->map->{path} ne "{link}";
		2220
		2221	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2222	}
		2223
		2224	sub cf::object::player::leave_link {
		2225	my ($self, $map, $x, $y) = @_;
		2226
		2227	return unless $self->contr->active;
		2228
		2229	my $link_pos = delete $self->{_link_pos};
		2230
		2231	unless ($map) {
		2232	# restore original map position
		2233	($map, $x, $y) = @{ $link_pos || [] };
		2234	$map = cf::map::find $map;
		2235
		2236	unless ($map) {
		2237	($map, $x, $y) = @$EMERGENCY_POSITION;
		2238	$map = cf::map::find $map
		2239	or die "FATAL: cannot load emergency map\n";
		2240	}
		2241	}
		2242
		2243	($x, $y) = (-1, -1)
		2244	unless (defined $x) && (defined $y);
		2245
		2246	# use -1 or undef as default coordinates, not 0, 0
		2247	($x, $y) = ($map->enter_x, $map->enter_y)
		2248	if $x <=0 && $y <= 0;
		2249
		2250	$map->load;
		2251	$map->load_diag;
		2252
		2253	return unless $self->contr->active;
		2254	$self->activate_recursive;
		2255
		2256	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2257	$self->enter_map ($map, $x, $y);
		2258	}
		2259
		2260	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2261
		2262	Moves the player to the given map-path and coordinates by first freezing
		2263	her, loading and preparing them map, calling the provided $check callback
		2264	that has to return the map if sucecssful, and then unfreezes the player on
		2265	the new (success) or old (failed) map position.
		2266
		2267	=cut
		2268
		2269	our $GOTOGEN;
		2270
		2271	sub cf::object::player::goto {
		2272	my ($self, $path, $x, $y, $check) = @_;
		2273
		2274	# do generation counting so two concurrent goto's will be executed in-order
		2275	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2276
		2277	$self->enter_link;
		2278
		2279	(async {
		2280	my $map = eval {
		2281	my $map = cf::map::find $path;
		2282
		2283	if ($map) {
		2284	$map = $map->customise_for ($self);
		2285	$map = $check->($map) if $check && $map;
		2286	} else {
		2287	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2288	}
		2289
		2290	$map
		2291	};
		2292
		2293	if ($@) {
		2294	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2295	LOG llevError | logBacktrace, Carp::longmess $@;
		2296	}
		2297
		2298	if ($gen == $self->{_goto_generation}) {
		2299	delete $self->{_goto_generation};
		2300	$self->leave_link ($map, $x, $y);
		2301	}
		2302	})->prio (1);
		2303	}
		2304
		2305	=item $player_object->enter_exit ($exit_object)
		2306
		2307	=cut
		2308
		2309	sub parse_random_map_params {
		2310	my ($spec) = @_;
		2311
		2312	my $rmp = { # defaults
		2313	xsize => (cf::rndm 15, 40),
		2314	ysize => (cf::rndm 15, 40),
		2315	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2316	#layout => string,
		2317	};
		2318
		2319	for (split /\n/, $spec) {
		2320	my ($k, $v) = split /\s+/, $_, 2;
		2321
		2322	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2323	}
		2324
		2325	$rmp
		2326	}
		2327
		2328	sub prepare_random_map {
		2329	my ($exit) = @_;
		2330
		2331	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2332
		2333	# all this does is basically replace the /! path by
		2334	# a new random map path (?random/...) with a seed
		2335	# that depends on the exit object
		2336
		2337	my $rmp = parse_random_map_params $exit->msg;
		2338
		2339	if ($exit->map) {
		2340	$rmp->{region} = $exit->region->name;
		2341	$rmp->{origin_map} = $exit->map->path;
		2342	$rmp->{origin_x} = $exit->x;
		2343	$rmp->{origin_y} = $exit->y;
		2344	}
		2345
		2346	$rmp->{random_seed} ||= $exit->random_seed;
		2347
		2348	my $data = cf::to_json $rmp;
		2349	my $md5 = Digest::MD5::md5_hex $data;
		2350	my $meta = "$RANDOMDIR/$md5.meta";
		2351
		2352	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2353	aio_write $fh, 0, (length $data), $data, 0;
		2354	undef $fh;
		2355	aio_rename "$meta~", $meta;
		2356
		2357	$exit->slaying ("?random/$md5");
		2358	$exit->msg (undef);
		2359	}
		2360	}
		2361
		2362	sub cf::object::player::enter_exit {
		2363	my ($self, $exit) = @_;
		2364
		2365	return unless $self->type == cf::PLAYER;
		2366
		2367	if ($exit->slaying eq "/!") {
		2368	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2369	# the problem is that $exit might not survive long enough
		2370	# so it needs to be done right now, right here
		2371	cf::sync_job { prepare_random_map $exit };
		2372	}
		2373
		2374	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2375	my $hp = $exit->stats->hp;
		2376	my $sp = $exit->stats->sp;
		2377
		2378	$self->enter_link;
		2379
		2380	# if exit is damned, update players death & WoR home-position
		2381	$self->contr->savebed ($slaying, $hp, $sp)
		2382	if $exit->flag (FLAG_DAMNED);
		2383
		2384	(async {
		2385	$self->deactivate_recursive; # just to be sure
		2386	unless (eval {
		2387	$self->goto ($slaying, $hp, $sp);
		2388
		2389	1;
		2390	}) {
		2391	$self->message ("Something went wrong deep within the crossfire server. "
		2392	. "I'll try to bring you back to the map you were before. "
		2393	. "Please report this to the dungeon master!",
		2394	cf::NDI_UNIQUE | cf::NDI_RED);
		2395
		2396	warn "ERROR in enter_exit: $@";
		2397	$self->leave_link;
		2398	}
		2399	})->prio (1);
		2400	}
		2401
932	=head3 cf::client	2402	=head3 cf::client
933		2403
934	=over 4	2404	=over 4
935		2405
936	=item $client->send_drawinfo ($text, $flags)	2406	=item $client->send_drawinfo ($text, $flags)
…		…
942		2412
943	sub cf::client::send_drawinfo {	2413	sub cf::client::send_drawinfo {
944	my ($self, $text, $flags) = @_;	2414	my ($self, $text, $flags) = @_;
945		2415
946	utf8::encode $text;	2416	utf8::encode $text;
947	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2417	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
948	}	2418	}
949		2419
		2420	=item $client->send_msg ($color, $type, $msg, [extra...])
		2421
		2422	Send a drawinfo or msg packet to the client, formatting the msg for the
		2423	client if neccessary. C<$type> should be a string identifying the type of
		2424	the message, with C<log> being the default. If C<$color> is negative, suppress
		2425	the message unless the client supports the msg packet.
		2426
		2427	=cut
		2428
		2429	sub cf::client::send_msg {
		2430	my ($self, $color, $type, $msg, @extra) = @_;
		2431
		2432	$msg = $self->pl->expand_cfpod ($msg);
		2433
		2434	return unless @extra || length $msg;
		2435
		2436	if ($self->can_msg) {
		2437	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2438	} else {
		2439	# replace some tags by gcfclient-compatible ones
		2440	for ($msg) {
		2441	1 while
		2442	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2443	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2444	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2445	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2446	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2447	}
		2448
		2449	if ($color >= 0) {
		2450	if (0 && $msg =~ /\[/) {
		2451	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2452	} else {
		2453	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2454	$self->send_packet ("drawinfo $color $msg")
		2455	}
		2456	}
		2457	}
		2458	}
		2459
		2460	=item $client->ext_event ($type, %msg)
		2461
		2462	Sends an ext event to the client.
		2463
		2464	=cut
		2465
		2466	sub cf::client::ext_event($$%) {
		2467	my ($self, $type, %msg) = @_;
		2468
		2469	$msg{msgtype} = "event_$type";
		2470	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
		2471	}
950		2472
951	=item $success = $client->query ($flags, "text", \&cb)	2473	=item $success = $client->query ($flags, "text", \&cb)
952		2474
953	Queues a query to the client, calling the given callback with	2475	Queues a query to the client, calling the given callback with
954	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2476	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
955	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2477	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
956		2478
957	Queries can fail, so check the return code. Or don't, as queries will become	2479	Queries can fail, so check the return code. Or don't, as queries will
958	reliable at some point in the future.	2480	become reliable at some point in the future.
959		2481
960	=cut	2482	=cut
961		2483
962	sub cf::client::query {	2484	sub cf::client::query {
963	my ($self, $flags, $text, $cb) = @_;	2485	my ($self, $flags, $text, $cb) = @_;
…		…
971	utf8::encode $text;	2493	utf8::encode $text;
972	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2494	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
973		2495
974	$self->send_packet ($self->{query_queue}[0][0])	2496	$self->send_packet ($self->{query_queue}[0][0])
975	if @{ $self->{query_queue} } == 1;	2497	if @{ $self->{query_queue} } == 1;
		2498
		2499	1
976	}	2500	}
977		2501
978	cf::client->attach (	2502	cf::client->attach (
		2503	on_connect => sub {
		2504	my ($ns) = @_;
		2505
		2506	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2507	},
979	on_reply => sub {	2508	on_reply => sub {
980	my ($ns, $msg) = @_;	2509	my ($ns, $msg) = @_;
981		2510
982	# this weird shuffling is so that direct followup queries	2511	# this weird shuffling is so that direct followup queries
983	# get handled first	2512	# get handled first
984	my $queue = delete $ns->{query_queue};	2513	my $queue = delete $ns->{query_queue}
		2514	or return; # be conservative, not sure how that can happen, but we saw a crash here
985		2515
986	(shift @$queue)->[1]->($msg);	2516	(shift @$queue)->[1]->($msg);
		2517	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
987		2518
988	push @{ $ns->{query_queue} }, @$queue;	2519	push @{ $ns->{query_queue} }, @$queue;
989		2520
990	if (@{ $ns->{query_queue} } == @$queue) {	2521	if (@{ $ns->{query_queue} } == @$queue) {
991	if (@$queue) {	2522	if (@$queue) {
…		…
993	} else {	2524	} else {
994	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2525	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
995	}	2526	}
996	}	2527	}
997	},	2528	},
		2529	on_exticmd => sub {
		2530	my ($ns, $buf) = @_;
		2531
		2532	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2533
		2534	if (ref $msg) {
		2535	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2536	if (my %reply = $cb->($ns, $msg)) {
		2537	$reply{msgid} = $msg->{msgid};
		2538	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2539	}
		2540	}
		2541	} else {
		2542	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2543	}
		2544
		2545	cf::override;
		2546	},
998	);	2547	);
999		2548
1000	=item $client->coro (\&cb)	2549	=item $client->async (\&cb)
1001		2550
1002	Create a new coroutine, running the specified callback. The coroutine will	2551	Create a new coroutine, running the specified callback. The coroutine will
1003	be automatically cancelled when the client gets destroyed (e.g. on logout,	2552	be automatically cancelled when the client gets destroyed (e.g. on logout,
1004	or loss of connection).	2553	or loss of connection).
1005		2554
1006	=cut	2555	=cut
1007		2556
1008	sub cf::client::coro {	2557	sub cf::client::async {
1009	my ($self, $cb) = @_;	2558	my ($self, $cb) = @_;
1010		2559
1011	my $coro; $coro = async {	2560	my $coro = &Coro::async ($cb);
1012	eval {
1013	$cb->();
1014	};
1015	warn $@ if $@;
1016	};
1017		2561
1018	$coro->on_destroy (sub {	2562	$coro->on_destroy (sub {
1019	delete $self->{_coro}{$coro+0};	2563	delete $self->{_coro}{$coro+0};
1020	});	2564	});
1021		2565
…		…
1054		2598
1055	# here we export the classes and methods available to script code	2599	# here we export the classes and methods available to script code
1056		2600
1057	=pod	2601	=pod
1058		2602
1059	The following fucntions and emthods are available within a safe environment:	2603	The following functions and methods are available within a safe environment:
1060		2604
1061	cf::object contr pay_amount pay_player map	2605	cf::object
		2606	contr pay_amount pay_player map x y force_find force_add
		2607	insert remove
		2608
1062	cf::object::player player	2609	cf::object::player
1063	cf::player peaceful	2610	player
1064	cf::map trigger	2611
		2612	cf::player
		2613	peaceful
		2614
		2615	cf::map
		2616	trigger
1065		2617
1066	=cut	2618	=cut
1067		2619
1068	for (	2620	for (
1069	["cf::object" => qw(contr pay_amount pay_player map)],	2621	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2622	insert remove)],
1070	["cf::object::player" => qw(player)],	2623	["cf::object::player" => qw(player)],
1071	["cf::player" => qw(peaceful)],	2624	["cf::player" => qw(peaceful)],
1072	["cf::map" => qw(trigger)],	2625	["cf::map" => qw(trigger)],
1073	) {	2626	) {
1074	no strict 'refs';	2627	no strict 'refs';
…		…
1145	=back	2698	=back
1146		2699
1147	=cut	2700	=cut
1148		2701
1149	#############################################################################	2702	#############################################################################
		2703	# the server's init and main functions
1150		2704
1151	=head2 EXTENSION DATABASE SUPPORT	2705	sub load_facedata($) {
		2706	my ($path) = @_;
1152		2707
1153	Crossfire maintains a very simple database for extension use. It can	2708	warn "loading facedata from $path\n";
1154	currently store anything that can be serialised using Storable, which
1155	excludes objects.
1156		2709
1157	The parameter C<$family> should best start with the name of the extension	2710	my $facedata;
1158	using it, it should be unique.	2711	0 < aio_load $path, $facedata
		2712	or die "$path: $!";
1159		2713
1160	=over 4	2714	$facedata = Coro::Storable::thaw $facedata;
1161		2715
1162	=item $hashref = cf::db_get $family	2716	$facedata->{version} == 2
		2717	or cf::cleanup "$path: version mismatch, cannot proceed.";
1163		2718
1164	Return a hashref for use by the extension C<$family>, which can be
1165	modified. After modifications, you have to call C<cf::db_dirty> or
1166	C<cf::db_sync>.
1167
1168	=item $value = cf::db_get $family => $key
1169
1170	Returns a single value from the database
1171
1172	=item cf::db_put $family => $hashref
1173
1174	Stores the given family hashref into the database. Updates are delayed, if
1175	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1176
1177	=item cf::db_put $family => $key => $value
1178
1179	Stores the given C<$value> in the family hash. Updates are delayed, if you
1180	want the data to be synced to disk immediately, use C<cf::db_sync>.
1181
1182	=item cf::db_dirty
1183
1184	Marks the database as dirty, to be updated at a later time.
1185
1186	=item cf::db_sync
1187
1188	Immediately write the database to disk I<if it is dirty>.
1189
1190	=cut
1191
1192	our $DB;
1193
1194	{
1195	my $path = cf::localdir . "/database.pst";
1196
1197	sub db_load() {
1198	warn "loading database $path\n";#d# remove later
1199	$DB = stat $path ? Storable::retrieve $path : { };
1200	}	2719	{
		2720	my $faces = $facedata->{faceinfo};
1201		2721
1202	my $pid;	2722	while (my ($face, $info) = each %$faces) {
1203		2723	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1204	sub db_save() {	2724	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
1205	warn "saving database $path\n";#d# remove later	2725	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
1206	waitpid $pid, 0 if $pid;	2726	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1207	if (0 == ($pid = fork)) {	2727	Coro::cede;
1208	$DB->{_meta}{version} = 1;
1209	Storable::nstore $DB, "$path~";
1210	rename "$path~", $path;
1211	cf::_exit 0 if defined $pid;
1212	}
1213	}
1214
1215	my $dirty;
1216
1217	sub db_sync() {
1218	db_save if $dirty;
1219	undef $dirty;
1220	}
1221
1222	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1223	db_sync;
1224	});
1225
1226	sub db_dirty() {
1227	$dirty = 1;
1228	$idle->start;
1229	}
1230
1231	sub db_get($;$) {
1232	@_ >= 2
1233	? $DB->{$_[0]}{$_[1]}
1234	: ($DB->{$_[0]} ||= { })
1235	}
1236
1237	sub db_put($$;$) {
1238	if (@_ >= 3) {
1239	$DB->{$_[0]}{$_[1]} = $_[2];
1240	} else {
1241	$DB->{$_[0]} = $_[1];
1242	}
1243	db_dirty;
1244	}
1245
1246	cf::global->attach (
1247	prio => 10000,
1248	on_cleanup => sub {
1249	db_sync;
1250	},	2728	}
1251	);
1252	}
1253		2729
1254	#############################################################################	2730	while (my ($face, $info) = each %$faces) {
1255	# the server's main()	2731	next unless $info->{smooth};
		2732	my $idx = cf::face::find $face
		2733	or next;
		2734	if (my $smooth = cf::face::find $info->{smooth}) {
		2735	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2736	} else {
		2737	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2738	}
		2739	Coro::cede;
		2740	}
		2741	}
		2742
		2743	{
		2744	my $anims = $facedata->{animinfo};
		2745
		2746	while (my ($anim, $info) = each %$anims) {
		2747	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2748	Coro::cede;
		2749	}
		2750
		2751	cf::anim::invalidate_all; # d'oh
		2752	}
		2753
		2754	1
		2755	}
		2756
		2757	sub reload_regions {
		2758	load_resource_file "$MAPDIR/regions"
		2759	or die "unable to load regions file\n";
		2760	}
		2761
		2762	sub reload_facedata {
		2763	load_facedata "$DATADIR/facedata"
		2764	or die "unable to load facedata\n";
		2765	}
		2766
		2767	sub reload_archetypes {
		2768	load_resource_file "$DATADIR/archetypes"
		2769	or die "unable to load archetypes\n";
		2770	#d# NEED to laod twice to resolve forward references
		2771	# this really needs to be done in an extra post-pass
		2772	# (which needs to be synchronous, so solve it differently)
		2773	load_resource_file "$DATADIR/archetypes"
		2774	or die "unable to load archetypes\n";
		2775	}
		2776
		2777	sub reload_treasures {
		2778	load_resource_file "$DATADIR/treasures"
		2779	or die "unable to load treasurelists\n";
		2780	}
		2781
		2782	sub reload_resources {
		2783	warn "reloading resource files...\n";
		2784
		2785	reload_regions;
		2786	reload_facedata;
		2787	#reload_archetypes;#d#
		2788	reload_archetypes;
		2789	reload_treasures;
		2790
		2791	warn "finished reloading resource files\n";
		2792	}
		2793
		2794	sub init {
		2795	reload_resources;
		2796	}
1256		2797
1257	sub cfg_load {	2798	sub cfg_load {
1258	open my $fh, "<:utf8", cf::confdir . "/config"	2799	open my $fh, "<:utf8", "$CONFDIR/config"
1259	or return;	2800	or return;
1260		2801
1261	local $/;	2802	local $/;
1262	*CFG = YAML::Syck::Load <$fh>;	2803	*CFG = YAML::Syck::Load <$fh>;
		2804
		2805	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2806
		2807	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2808	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2809
		2810	if (exists $CFG{mlockall}) {
		2811	eval {
		2812	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2813	and die "WARNING: m(un)lockall failed: $!\n";
		2814	};
		2815	warn $@ if $@;
		2816	}
1263	}	2817	}
1264		2818
1265	sub main {	2819	sub main {
		2820	# we must not ever block the main coroutine
		2821	local $Coro::idle = sub {
		2822	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2823	(async {
		2824	Event::one_event;
		2825	})->prio (Coro::PRIO_MAX);
		2826	};
		2827
1266	cfg_load;	2828	cfg_load;
1267	db_load;	2829	db_init;
1268	load_extensions;	2830	load_extensions;
		2831
		2832	$TICK_WATCHER->start;
1269	Event::loop;	2833	Event::loop;
1270	}	2834	}
1271		2835
1272	#############################################################################	2836	#############################################################################
1273	# initialisation	2837	# initialisation and cleanup
1274		2838
1275	sub _perl_reload() {	2839	# install some emergency cleanup handlers
		2840	BEGIN {
		2841	for my $signal (qw(INT HUP TERM)) {
		2842	Event->signal (
		2843	reentrant => 0,
		2844	data => WF_AUTOCANCEL,
		2845	signal => $signal,
		2846	prio => 0,
		2847	cb => sub {
		2848	cf::cleanup "SIG$signal";
		2849	},
		2850	);
		2851	}
		2852	}
		2853
		2854	sub write_runtime {
		2855	my $runtime = "$LOCALDIR/runtime";
		2856
		2857	# first touch the runtime file to show we are still running:
		2858	# the fsync below can take a very very long time.
		2859
		2860	IO::AIO::aio_utime $runtime, undef, undef;
		2861
		2862	my $guard = cf::lock_acquire "write_runtime";
		2863
		2864	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2865	or return;
		2866
		2867	my $value = $cf::RUNTIME + 90 + 10;
		2868	# 10 is the runtime save interval, for a monotonic clock
		2869	# 60 allows for the watchdog to kill the server.
		2870
		2871	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2872	and return;
		2873
		2874	# always fsync - this file is important
		2875	aio_fsync $fh
		2876	and return;
		2877
		2878	# touch it again to show we are up-to-date
		2879	aio_utime $fh, undef, undef;
		2880
		2881	close $fh
		2882	or return;
		2883
		2884	aio_rename "$runtime~", $runtime
		2885	and return;
		2886
		2887	warn "runtime file written.\n";
		2888
		2889	1
		2890	}
		2891
		2892	sub emergency_save() {
		2893	my $freeze_guard = cf::freeze_mainloop;
		2894
		2895	warn "enter emergency perl save\n";
		2896
		2897	cf::sync_job {
		2898	# use a peculiar iteration method to avoid tripping on perl
		2899	# refcount bugs in for. also avoids problems with players
		2900	# and maps saved/destroyed asynchronously.
		2901	warn "begin emergency player save\n";
		2902	for my $login (keys %cf::PLAYER) {
		2903	my $pl = $cf::PLAYER{$login} or next;
		2904	$pl->valid or next;
		2905	$pl->save;
		2906	}
		2907	warn "end emergency player save\n";
		2908
		2909	warn "begin emergency map save\n";
		2910	for my $path (keys %cf::MAP) {
		2911	my $map = $cf::MAP{$path} or next;
		2912	$map->valid or next;
		2913	$map->save;
		2914	}
		2915	warn "end emergency map save\n";
		2916
		2917	warn "begin emergency database checkpoint\n";
		2918	BDB::db_env_txn_checkpoint $DB_ENV;
		2919	warn "end emergency database checkpoint\n";
		2920	};
		2921
		2922	warn "leave emergency perl save\n";
		2923	}
		2924
		2925	sub post_cleanup {
		2926	my ($make_core) = @_;
		2927
		2928	warn Carp::longmess "post_cleanup backtrace"
		2929	if $make_core;
		2930	}
		2931
		2932	sub do_reload_perl() {
		2933	# can/must only be called in main
		2934	if ($Coro::current != $Coro::main) {
		2935	warn "can only reload from main coroutine";
		2936	return;
		2937	}
		2938
1276	warn "reloading...";	2939	warn "reloading...";
1277		2940
1278	eval {	2941	warn "entering sync_job";
1279	local $FREEZE = 1;
1280		2942
		2943	cf::sync_job {
		2944	cf::write_runtime; # external watchdog should not bark
1281	cf::emergency_save;	2945	cf::emergency_save;
		2946	cf::write_runtime; # external watchdog should not bark
1282		2947
1283	# cancel all watchers	2948	warn "syncing database to disk";
		2949	BDB::db_env_txn_checkpoint $DB_ENV;
		2950
		2951	# if anything goes wrong in here, we should simply crash as we already saved
		2952
		2953	warn "cancelling all WF_AUTOCANCEL watchers";
1284	for (Event::all_watchers) {	2954	for (Event::all_watchers) {
1285	$_->cancel if $_->data & WF_AUTOCANCEL;	2955	$_->cancel if $_->data & WF_AUTOCANCEL;
1286	}	2956	}
1287		2957
		2958	warn "flushing outstanding aio requests";
		2959	for (;;) {
		2960	BDB::flush;
		2961	IO::AIO::flush;
		2962	Coro::cede;
		2963	last unless IO::AIO::nreqs || BDB::nreqs;
		2964	warn "iterate...";
		2965	}
		2966
		2967	++$RELOAD;
		2968
1288	# cancel all extension coros	2969	warn "cancelling all extension coros";
1289	$_->cancel for values %EXT_CORO;	2970	$_->cancel for values %EXT_CORO;
1290	%EXT_CORO = ();	2971	%EXT_CORO = ();
1291		2972
1292	# unload all extensions	2973	warn "removing commands";
1293	for (@exts) {	2974	%COMMAND = ();
		2975
		2976	warn "removing ext/exti commands";
		2977	%EXTCMD = ();
		2978	%EXTICMD = ();
		2979
		2980	warn "unloading/nuking all extensions";
		2981	for my $pkg (@EXTS) {
1294	warn "unloading <$_>";	2982	warn "... unloading $pkg";
1295	unload_extension $_;	2983
		2984	if (my $cb = $pkg->can ("unload")) {
		2985	eval {
		2986	$cb->($pkg);
		2987	1
		2988	} or warn "$pkg unloaded, but with errors: $@";
1296	}	2989	}
1297		2990
		2991	warn "... nuking $pkg";
		2992	Symbol::delete_package $pkg;
		2993	}
		2994
1298	# unload all modules loaded from $LIBDIR	2995	warn "unloading all perl modules loaded from $LIBDIR";
1299	while (my ($k, $v) = each %INC) {	2996	while (my ($k, $v) = each %INC) {
1300	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2997	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1301		2998
1302	warn "removing <$k>";	2999	warn "... unloading $k";
1303	delete $INC{$k};	3000	delete $INC{$k};
1304		3001
1305	$k =~ s/\.pm$//;	3002	$k =~ s/\.pm$//;
1306	$k =~ s/\//::/g;	3003	$k =~ s/\//::/g;
1307		3004
…		…
1310	}	3007	}
1311		3008
1312	Symbol::delete_package $k;	3009	Symbol::delete_package $k;
1313	}	3010	}
1314		3011
1315	# sync database to disk
1316	cf::db_sync;
1317	IO::AIO::flush;
1318
1319	# get rid of safe::, as good as possible	3012	warn "getting rid of safe::, as good as possible";
1320	Symbol::delete_package "safe::$_"	3013	Symbol::delete_package "safe::$_"
1321	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	3014	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1322		3015
1323	# remove register_script_function callbacks
1324	# TODO
1325
1326	# unload cf.pm "a bit"	3016	warn "unloading cf.pm \"a bit\"";
1327	delete $INC{"cf.pm"};	3017	delete $INC{"cf.pm"};
		3018	delete $INC{"cf/pod.pm"};
1328		3019
1329	# don't, removes xs symbols, too,	3020	# don't, removes xs symbols, too,
1330	# and global variables created in xs	3021	# and global variables created in xs
1331	#Symbol::delete_package __PACKAGE__;	3022	#Symbol::delete_package __PACKAGE__;
1332		3023
1333	# reload cf.pm	3024	warn "unload completed, starting to reload now";
		3025
1334	warn "reloading cf.pm";	3026	warn "reloading cf.pm";
1335	require cf;	3027	require cf;
1336	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3028	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1337		3029
1338	# load config and database again	3030	warn "loading config and database again";
1339	cf::cfg_load;	3031	cf::cfg_load;
1340	cf::db_load;
1341		3032
1342	# load extensions
1343	warn "load extensions";	3033	warn "loading extensions";
1344	cf::load_extensions;	3034	cf::load_extensions;
1345		3035
1346	# reattach attachments to objects	3036	warn "reattaching attachments to objects/players";
1347	warn "reattach";	3037	_global_reattach; # objects, sockets
1348	_global_reattach;	3038	warn "reattaching attachments to maps";
		3039	reattach $_ for values %MAP;
		3040	warn "reattaching attachments to players";
		3041	reattach $_ for values %PLAYER;
		3042
		3043	warn "leaving sync_job";
		3044
		3045	1
		3046	} or do {
		3047	warn $@;
		3048	warn "error while reloading, exiting.";
		3049	exit 1;
1349	};	3050	};
1350	warn $@ if $@;
1351		3051
1352	warn "reloaded";	3052	warn "reloaded";
1353	};	3053	};
1354		3054
1355	sub perl_reload() {	3055	our $RELOAD_WATCHER; # used only during reload
1356	_perl_reload;
1357	}
1358		3056
1359	register "<global>", __PACKAGE__;	3057	sub reload_perl() {
		3058	# doing reload synchronously and two reloads happen back-to-back,
		3059	# coro crashes during coro_state_free->destroy here.
1360		3060
		3061	$RELOAD_WATCHER ||= Event->timer (
		3062	reentrant => 0,
		3063	after => 0,
		3064	data => WF_AUTOCANCEL,
		3065	cb => sub {
		3066	do_reload_perl;
		3067	undef $RELOAD_WATCHER;
		3068	},
		3069	);
		3070	}
		3071
1361	register_command "perl-reload" => sub {	3072	register_command "reload" => sub {
1362	my ($who, $arg) = @_;	3073	my ($who, $arg) = @_;
1363		3074
1364	if ($who->flag (FLAG_WIZ)) {	3075	if ($who->flag (FLAG_WIZ)) {
1365	$who->message ("reloading...");	3076	$who->message ("reloading server.");
1366	_perl_reload;	3077	async { reload_perl };
1367	}	3078	}
1368	};	3079	};
1369		3080
1370	unshift @INC, $LIBDIR;	3081	unshift @INC, $LIBDIR;
1371		3082
		3083	my $bug_warning = 0;
		3084
		3085	our @WAIT_FOR_TICK;
		3086	our @WAIT_FOR_TICK_BEGIN;
		3087
		3088	sub wait_for_tick {
		3089	return unless $TICK_WATCHER->is_active;
		3090	return if $Coro::current == $Coro::main;
		3091
		3092	my $signal = new Coro::Signal;
		3093	push @WAIT_FOR_TICK, $signal;
		3094	$signal->wait;
		3095	}
		3096
		3097	sub wait_for_tick_begin {
		3098	return unless $TICK_WATCHER->is_active;
		3099	return if $Coro::current == $Coro::main;
		3100
		3101	my $signal = new Coro::Signal;
		3102	push @WAIT_FOR_TICK_BEGIN, $signal;
		3103	$signal->wait;
		3104	}
		3105
		3106	my $min = 1e6;#d#
		3107	my $avg = 10;
1372	$TICK_WATCHER = Event->timer (	3108	$TICK_WATCHER = Event->timer (
1373	reentrant => 0,	3109	reentrant => 0,
		3110	parked => 1,
1374	prio => 0,	3111	prio => 0,
1375	at => $NEXT_TICK || $TICK,	3112	at => $NEXT_TICK || $TICK,
1376	data => WF_AUTOCANCEL,	3113	data => WF_AUTOCANCEL,
1377	cb => sub {	3114	cb => sub {
1378	unless ($FREEZE) {	3115	if ($Coro::current != $Coro::main) {
		3116	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3117	unless ++$bug_warning > 10;
		3118	return;
		3119	}
		3120
		3121	$NOW = $tick_start = Event::time;
		3122
1379	cf::server_tick; # one server iteration	3123	cf::server_tick; # one server iteration
1380	$RUNTIME += $TICK;	3124
		3125	0 && sync_job {#d#
		3126	for(1..10) {
		3127	my $t = Event::time;
		3128	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3129	or die;
		3130
		3131	$map->width (50);
		3132	$map->height (50);
		3133	$map->alloc;
		3134	$map->_load_objects ("/tmp/x.map", 1);
		3135	my $t = Event::time - $t;
		3136
		3137	#next unless $t < 0.0013;#d#
		3138	if ($t < $min) {
		3139	$min = $t;
		3140	}
		3141	$avg = $avg * 0.99 + $t * 0.01;
		3142	}
		3143	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3144	exit 0;
		3145	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1381	}	3146	};
1382		3147
		3148	$RUNTIME += $TICK;
1383	$NEXT_TICK += $TICK;	3149	$NEXT_TICK += $TICK;
1384		3150
		3151	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3152	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3153	Coro::async_pool {
		3154	write_runtime
		3155	or warn "ERROR: unable to write runtime file: $!";
		3156	};
		3157	}
		3158
		3159	# my $AFTER = Event::time;
		3160	# warn $AFTER - $NOW;#d#
		3161
		3162	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3163	$sig->send;
		3164	}
		3165	while (my $sig = shift @WAIT_FOR_TICK) {
		3166	$sig->send;
		3167	}
		3168
		3169	$NOW = Event::time;
		3170
1385	# if we are delayed by four ticks or more, skip them all	3171	# if we are delayed by four ticks or more, skip them all
1386	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3172	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1387		3173
1388	$TICK_WATCHER->at ($NEXT_TICK);	3174	$TICK_WATCHER->at ($NEXT_TICK);
1389	$TICK_WATCHER->start;	3175	$TICK_WATCHER->start;
		3176
		3177	$LOAD = ($NOW - $tick_start) / $TICK;
		3178	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3179
		3180	_post_tick;
		3181
		3182
1390	},	3183	},
1391	);	3184	);
1392		3185
		3186	{
		3187	BDB::max_poll_time $TICK * 0.1;
		3188	$BDB_POLL_WATCHER = Event->io (
		3189	reentrant => 0,
		3190	fd => BDB::poll_fileno,
		3191	poll => 'r',
		3192	prio => 0,
		3193	data => WF_AUTOCANCEL,
		3194	cb => \&BDB::poll_cb,
		3195	);
		3196	BDB::min_parallel 8;
		3197
		3198	BDB::set_sync_prepare {
		3199	my $status;
		3200	my $current = $Coro::current;
		3201	(
		3202	sub {
		3203	$status = $!;
		3204	$current->ready; undef $current;
		3205	},
		3206	sub {
		3207	Coro::schedule while defined $current;
		3208	$! = $status;
		3209	},
		3210	)
		3211	};
		3212
		3213	unless ($DB_ENV) {
		3214	$DB_ENV = BDB::db_env_create;
		3215
		3216	cf::sync_job {
		3217	eval {
		3218	BDB::db_env_open
		3219	$DB_ENV,
		3220	$BDBDIR,
		3221	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3222	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3223	0666;
		3224
		3225	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3226
		3227	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3228	$DB_ENV->set_lk_detect;
		3229	};
		3230
		3231	cf::cleanup "db_env_open(db): $@" if $@;
		3232	};
		3233	}
		3234	}
		3235
		3236	{
		3237	IO::AIO::min_parallel 8;
		3238
		3239	undef $Coro::AIO::WATCHER;
1393	IO::AIO::max_poll_time $TICK * 0.2;	3240	IO::AIO::max_poll_time $TICK * 0.1;
1394		3241	$AIO_POLL_WATCHER = Event->io (
1395	Event->io (fd => IO::AIO::poll_fileno,	3242	reentrant => 0,
1396	poll => 'r',
1397	prio => 5,
1398	data => WF_AUTOCANCEL,	3243	data => WF_AUTOCANCEL,
		3244	fd => IO::AIO::poll_fileno,
		3245	poll => 'r',
		3246	prio => 6,
1399	cb => \&IO::AIO::poll_cb);	3247	cb => \&IO::AIO::poll_cb,
		3248	);
		3249	}
1400		3250
1401	# we must not ever block the main coroutine	3251	my $_log_backtrace;
1402	$Coro::idle = sub {	3252
1403	#Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	3253	sub _log_backtrace {
1404	warn "FATAL: Coro::idle was called, major BUG\n";	3254	my ($msg, @addr) = @_;
1405	(Coro::unblock_sub {	3255
1406	Event::one_event;	3256	$msg =~ s/\n//;
1407	})->();	3257
1408	};	3258	# limit the # of concurrent backtraces
		3259	if ($_log_backtrace < 2) {
		3260	++$_log_backtrace;
		3261	async {
		3262	my @bt = fork_call {
		3263	@addr = map { sprintf "%x", $_ } @addr;
		3264	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3265	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3266	or die "addr2line: $!";
		3267
		3268	my @funcs;
		3269	my @res = <$fh>;
		3270	chomp for @res;
		3271	while (@res) {
		3272	my ($func, $line) = splice @res, 0, 2, ();
		3273	push @funcs, "[$func] $line";
		3274	}
		3275
		3276	@funcs
		3277	};
		3278
		3279	LOG llevInfo, "[ABT] $msg\n";
		3280	LOG llevInfo, "[ABT] $_\n" for @bt;
		3281	--$_log_backtrace;
		3282	};
		3283	} else {
		3284	LOG llevInfo, "[ABT] $msg\n";
		3285	LOG llevInfo, "[ABT] [suppressed]\n";
		3286	}
		3287	}
		3288
		3289	# load additional modules
		3290	use cf::pod;
		3291
		3292	END { cf::emergency_save }
1409		3293
1410	1	3294	1
1411		3295

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