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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 1.298 by root, Sun Jul 8 14:50:07 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 { }, $args
		406
		407	Executes the given code block with the given arguments in a seperate
		408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
		411
		412	=cut
		413
		414	sub fork_call(&@) {
		415	my ($cb, @args) = @_;
		416
		417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
		421
		422	if (my $pid = fork) {
		423	close $fh2;
		424
		425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		426	warn "pst<$res>" unless $res =~ /^pst/;
		427	$res = Coro::Storable::thaw $res;
		428
		429	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		430
		431	Carp::confess $$res unless "ARRAY" eq ref $res;
		432
		433	return wantarray ? @$res : $res->[-1];
		434	} else {
		435	reset_signals;
		436	local $SIG{__WARN__};
		437	local $SIG{__DIE__};
		438	local $Coro::idle;
		439	$Coro::current->prio (Coro::PRIO_MAX);
		440	eval {
		441	close $fh1;
		442
		443	my @res = eval { $cb->(@args) };
		444
		445	open my $fh, ">", \my $buf
		446	or die "fork_call: cannot open fh-to-buf in child : $!";
		447	Storable::store_fd +($@ ? \"$@" : \@res), $fh;
		448	close $fh;
		449
		450	warn "writing ", length $buf;
		451	my $x;
		452	(length $buf) == ($x = syswrite $fh2, $buf)
		453	or warn "error writing ".(length $buf)." != $x\n";
		454	close $fh2;
		455	};
		456
		457	warn $@ if $@;
		458	_exit 0;
		459	}
		460	}
		461
		462	=item $value = cf::db_get $family => $key
		463
		464	Returns a single value from the environment database.
		465
		466	=item cf::db_put $family => $key => $value
		467
		468	Stores the given C<$value> in the family. It can currently store binary
		469	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		470
		471	=cut
		472
		473	our $DB;
		474
		475	sub db_init {
		476	unless ($DB) {
		477	$DB = BDB::db_create $DB_ENV;
		478
		479	cf::sync_job {
		480	eval {
		481	$DB->set_flags (BDB::CHKSUM);
		482
		483	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		484	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		485	cf::cleanup "db_open(db): $!" if $!;
		486	};
		487	cf::cleanup "db_open(db): $@" if $@;
		488	};
		489	}
		490	}
		491
		492	sub db_get($$) {
		493	my $key = "$_[0]/$_[1]";
		494
		495	cf::sync_job {
		496	BDB::db_get $DB, undef, $key, my $data;
		497
		498	$! ? ()
		499	: $data
		500	}
		501	}
		502
		503	sub db_put($$$) {
		504	BDB::dbreq_pri 4;
		505	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		506	}
		507
		508	=item cf::cache $id => [$paths...], $processversion => $process
		509
		510	Generic caching function that returns the value of the resource $id,
		511	caching and regenerating as required.
		512
		513	This function can block.
		514
		515	=cut
		516
		517	sub cache {
		518	my ($id, $src, $processversion, $process) = @_;
		519
		520	my $meta =
		521	join "\x00",
		522	$processversion,
		523	map {
		524	aio_stat $_
		525	and Carp::croak "$_: $!";
		526
		527	($_, (stat _)[7,9])
		528	} @$src;
		529
		530	my $dbmeta = db_get cache => "$id/meta";
		531	if ($dbmeta ne $meta) {
		532	# changed, we may need to process
		533
		534	my @data;
		535	my $md5;
		536
		537	for (0 .. $#$src) {
		538	0 <= aio_load $src->[$_], $data[$_]
		539	or Carp::croak "$src->[$_]: $!";
		540	}
		541
		542	# if processing is expensive, check
		543	# checksum first
		544	if (1) {
		545	$md5 =
		546	join "\x00",
		547	$processversion,
		548	map {
		549	Coro::cede;
		550	($src->[$_], Digest::MD5::md5_hex $data[$_])
		551	} 0.. $#$src;
		552
		553
		554	my $dbmd5 = db_get cache => "$id/md5";
		555	if ($dbmd5 eq $md5) {
		556	db_put cache => "$id/meta", $meta;
		557
		558	return db_get cache => "$id/data";
		559	}
		560	}
		561
		562	my $t1 = Time::HiRes::time;
		563	my $data = $process->(\@data);
		564	my $t2 = Time::HiRes::time;
		565
		566	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		567
		568	db_put cache => "$id/data", $data;
		569	db_put cache => "$id/md5" , $md5;
		570	db_put cache => "$id/meta", $meta;
		571
		572	return $data;
		573	}
		574
		575	db_get cache => "$id/data"
		576	}
		577
		578	=item cf::datalog type => key => value, ...
		579
		580	Log a datalog packet of the given type with the given key-value pairs.
		581
		582	=cut
		583
		584	sub datalog($@) {
		585	my ($type, %kv) = @_;
		586	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		587	}
		588
234	=back	589	=back
235		590
236	=cut	591	=cut
237		592
238	#############################################################################	593	#############################################################################
…		…
243	attach callbacks/event handlers (a collection of which is called an "attachment")	598	attach callbacks/event handlers (a collection of which is called an "attachment")
244	to it. All such attachable objects support the following methods.	599	to it. All such attachable objects support the following methods.
245		600
246	In the following description, CLASS can be any of C<global>, C<object>	601	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	602	C<player>, C<client> or C<map> (i.e. the attachable objects in
248	crossfire+).	603	Crossfire TRT).
249		604
250	=over 4	605	=over 4
251		606
252	=item $attachable->attach ($attachment, key => $value...)	607	=item $attachable->attach ($attachment, key => $value...)
253		608
…		…
367	our @CB_TYPE = (); # registry for type (cf-object class) based events	722	our @CB_TYPE = (); # registry for type (cf-object class) based events
368	our @CB_MAP = ();	723	our @CB_MAP = ();
369		724
370	my %attachment;	725	my %attachment;
371		726
		727	sub cf::attachable::thawer_merge {
		728	# simply override everything except _meta
		729	local $_[0]{_meta};
		730	%{$_[0]} = %{$_[1]};
		731	}
		732
372	sub _attach_cb($$$$) {	733	sub _attach_cb($$$$) {
373	my ($registry, $event, $prio, $cb) = @_;	734	my ($registry, $event, $prio, $cb) = @_;
374		735
375	use sort 'stable';	736	use sort 'stable';
376		737
…		…
410	$registry = $CB_TYPE[$object_type] ||= [];	771	$registry = $CB_TYPE[$object_type] ||= [];
411		772
412	} elsif ($type eq "subtype") {	773	} elsif ($type eq "subtype") {
413	defined $object_type or Carp::croak "subtype specified without type";	774	defined $object_type or Carp::croak "subtype specified without type";
414	my $object_subtype = shift @arg;	775	my $object_subtype = shift @arg;
415	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	776	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
416		777
417	} elsif ($type eq "package") {	778	} elsif ($type eq "package") {
418	my $pkg = shift @arg;	779	my $pkg = shift @arg;
419		780
420	while (my ($name, $id) = each %cb_id) {	781	while (my ($name, $id) = each %cb_id) {
…		…
449	_attach $registry, $klass, @attach;	810	_attach $registry, $klass, @attach;
450	}	811	}
451		812
452	$obj->{$name} = \%arg;	813	$obj->{$name} = \%arg;
453	} else {	814	} else {
454	warn "object uses attachment '$name' that is not available, postponing.\n";	815	warn "object uses attachment '$name' which is not available, postponing.\n";
455	}	816	}
456		817
457	$obj->{_attachment}{$name} = undef;	818	$obj->{_attachment}{$name} = undef;
458	}	819	}
459		820
…		…
461	if (ref $_[0]) {	822	if (ref $_[0]) {
462	_object_attach @_;	823	_object_attach @_;
463	} else {	824	} else {
464	_attach shift->_attach_registry, @_;	825	_attach shift->_attach_registry, @_;
465	}	826	}
		827	_recalc_want;
466	};	828	};
467		829
468	# all those should be optimised	830	# all those should be optimised
469	sub cf::attachable::detach {	831	sub cf::attachable::detach {
470	my ($obj, $name) = @_;	832	my ($obj, $name) = @_;
…		…
473	delete $obj->{_attachment}{$name};	835	delete $obj->{_attachment}{$name};
474	reattach ($obj);	836	reattach ($obj);
475	} else {	837	} else {
476	Carp::croak "cannot, currently, detach class attachments";	838	Carp::croak "cannot, currently, detach class attachments";
477	}	839	}
		840	_recalc_want;
478	};	841	};
479		842
480	sub cf::attachable::attached {	843	sub cf::attachable::attached {
481	my ($obj, $name) = @_;	844	my ($obj, $name) = @_;
482		845
…		…
547	# object support	910	# object support
548		911
549	sub reattach {	912	sub reattach {
550	# basically do the same as instantiate, without calling instantiate	913	# basically do the same as instantiate, without calling instantiate
551	my ($obj) = @_;	914	my ($obj) = @_;
		915
		916	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
552		917
553	my $registry = $obj->registry;	918	my $registry = $obj->registry;
554		919
555	@$registry = ();	920	@$registry = ();
556		921
…		…
603	$filename, length $$rdata, scalar @$objs;	968	$filename, length $$rdata, scalar @$objs;
604		969
605	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	970	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
606	chmod SAVE_MODE, $fh;	971	chmod SAVE_MODE, $fh;
607	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	972	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
608	aio_fsync $fh;	973	aio_fsync $fh if $cf::USE_FSYNC;
609	close $fh;	974	close $fh;
610		975
611	if (@$objs) {	976	if (@$objs) {
612	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	977	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
613	chmod SAVE_MODE, $fh;	978	chmod SAVE_MODE, $fh;
614	my $data = Storable::nfreeze { version => 1, objs => $objs };	979	my $data = Storable::nfreeze { version => 1, objs => $objs };
615	aio_write $fh, 0, (length $data), $data, 0;	980	aio_write $fh, 0, (length $data), $data, 0;
616	aio_fsync $fh;	981	aio_fsync $fh if $cf::USE_FSYNC;
617	close $fh;	982	close $fh;
618	aio_rename "$filename.pst~", "$filename.pst";	983	aio_rename "$filename.pst~", "$filename.pst";
619	}	984	}
620	} else {	985	} else {
621	aio_unlink "$filename.pst";	986	aio_unlink "$filename.pst";
…		…
649	or return;	1014	or return;
650		1015
651	unless (aio_stat "$filename.pst") {	1016	unless (aio_stat "$filename.pst") {
652	(aio_load "$filename.pst", $av) >= 0	1017	(aio_load "$filename.pst", $av) >= 0
653	or return;	1018	or return;
654	$av = eval { (Storable::thaw <$av>)->{objs} };	1019	$av = eval { (Storable::thaw $av)->{objs} };
655	}	1020	}
656		1021
		1022	warn sprintf "loading %s (%d)\n",
		1023	$filename, length $data, scalar @{$av || []};
657	return ($data, $av);	1024	return ($data, $av);
658	}	1025	}
		1026
		1027	=head2 COMMAND CALLBACKS
		1028
		1029	=over 4
		1030
		1031	=cut
659		1032
660	#############################################################################	1033	#############################################################################
661	# command handling &c	1034	# command handling &c
662		1035
663	=item cf::register_command $name => \&callback($ob,$args);	1036	=item cf::register_command $name => \&callback($ob,$args);
…		…
676	push @{ $COMMAND{$name} }, [$caller, $cb];	1049	push @{ $COMMAND{$name} }, [$caller, $cb];
677	}	1050	}
678		1051
679	=item cf::register_extcmd $name => \&callback($pl,$packet);	1052	=item cf::register_extcmd $name => \&callback($pl,$packet);
680		1053
681	Register a callbackf ro execution when the client sends an extcmd packet.	1054	Register a callback for execution when the client sends an (synchronous)
		1055	extcmd packet. Ext commands will be processed in the order they are
		1056	received by the server, like other user commands. The first argument is
		1057	the logged-in player. Ext commands can only be processed after a player
		1058	has logged in successfully.
682		1059
683	If the callback returns something, it is sent back as if reply was being	1060	If the callback returns something, it is sent back as if reply was being
684	called.	1061	called.
685		1062
		1063	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1064
		1065	Register a callback for execution when the client sends an (asynchronous)
		1066	exticmd packet. Exti commands are processed by the server as soon as they
		1067	are received, i.e. out of order w.r.t. other commands. The first argument
		1068	is a client socket. Exti commands can be received anytime, even before
		1069	log-in.
		1070
		1071	If the callback returns something, it is sent back as if reply was being
		1072	called.
		1073
686	=cut	1074	=cut
687		1075
688	sub register_extcmd {	1076	sub register_extcmd {
689	my ($name, $cb) = @_;	1077	my ($name, $cb) = @_;
690		1078
691	my $caller = caller;
692	#warn "registering extcmd '$name' to '$caller'";
693
694	$EXTCMD{$name} = [$cb, $caller];	1079	$EXTCMD{$name} = $cb;
		1080	}
		1081
		1082	sub register_exticmd {
		1083	my ($name, $cb) = @_;
		1084
		1085	$EXTICMD{$name} = $cb;
695	}	1086	}
696		1087
697	cf::player->attach (	1088	cf::player->attach (
698	on_command => sub {	1089	on_command => sub {
699	my ($pl, $name, $params) = @_;	1090	my ($pl, $name, $params) = @_;
…		…
708	cf::override;	1099	cf::override;
709	},	1100	},
710	on_extcmd => sub {	1101	on_extcmd => sub {
711	my ($pl, $buf) = @_;	1102	my ($pl, $buf) = @_;
712		1103
713	my $msg = eval { from_json $buf };	1104	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
714		1105
715	if (ref $msg) {	1106	if (ref $msg) {
716	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1107	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
717	if (my %reply = $cb->[0]->($pl, $msg)) {	1108	if (my %reply = $cb->($pl, $msg)) {
718	$pl->ext_reply ($msg->{msgid}, %reply);	1109	$pl->ext_reply ($msg->{msgid}, %reply);
719	}	1110	}
720	}	1111	}
721	} else {	1112	} else {
722	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1113	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
724		1115
725	cf::override;	1116	cf::override;
726	},	1117	},
727	);	1118	);
728		1119
		1120	sub load_extensions {
		1121	cf::sync_job {
		1122	my %todo;
		1123
		1124	for my $path (<$LIBDIR/*.ext>) {
		1125	next unless -r $path;
		1126
		1127	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1128	my $base = $1;
		1129	my $pkg = $1;
		1130	$pkg =~ s/[^[:word:]]/_/g;
		1131	$pkg = "ext::$pkg";
		1132
		1133	open my $fh, "<:utf8", $path
		1134	or die "$path: $!";
		1135
		1136	my $source = do { local $/; <$fh> };
		1137
		1138	my %ext = (
		1139	path => $path,
		1140	base => $base,
		1141	pkg => $pkg,
		1142	);
		1143
		1144	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1145	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1146
		1147	$ext{source} =
		1148	"package $pkg; use strict; use utf8;\n"
		1149	. "#line 1 \"$path\"\n{\n"
		1150	. $source
		1151	. "\n};\n1";
		1152
		1153	$todo{$base} = \%ext;
		1154	}
		1155
		1156	my %done;
		1157	while (%todo) {
		1158	my $progress;
		1159
		1160	while (my ($k, $v) = each %todo) {
		1161	for (split /,\s*/, $v->{meta}{depends}) {
		1162	goto skip
		1163	unless exists $done{$_};
		1164	}
		1165
		1166	warn "... loading '$k' into '$v->{pkg}'\n";
		1167
		1168	unless (eval $v->{source}) {
		1169	my $msg = $@ ? "$v->{path}: $@\n"
		1170	: "$v->{base}: extension inactive.\n";
		1171
		1172	if (exists $v->{meta}{mandatory}) {
		1173	warn $msg;
		1174	warn "mandatory extension failed to load, exiting.\n";
		1175	exit 1;
		1176	}
		1177
		1178	warn $msg;
		1179	}
		1180
		1181	$done{$k} = delete $todo{$k};
		1182	push @EXTS, $v->{pkg};
		1183	$progress = 1;
		1184	}
		1185
		1186	skip:
		1187	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1188	unless $progress;
		1189	}
		1190	};
		1191	}
		1192
		1193	#############################################################################
		1194
		1195	=back
		1196
		1197	=head2 CORE EXTENSIONS
		1198
		1199	Functions and methods that extend core crossfire objects.
		1200
		1201	=cut
		1202
		1203	package cf::player;
		1204
		1205	use Coro::AIO;
		1206
		1207	=head3 cf::player
		1208
		1209	=over 4
		1210
		1211	=item cf::player::find $login
		1212
		1213	Returns the given player object, loading it if necessary (might block).
		1214
		1215	=cut
		1216
		1217	sub playerdir($) {
		1218	"$PLAYERDIR/"
		1219	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1220	}
		1221
		1222	sub path($) {
		1223	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1224
		1225	(playerdir $login) . "/playerdata"
		1226	}
		1227
		1228	sub find_active($) {
		1229	$cf::PLAYER{$_[0]}
		1230	and $cf::PLAYER{$_[0]}->active
		1231	and $cf::PLAYER{$_[0]}
		1232	}
		1233
		1234	sub exists($) {
		1235	my ($login) = @_;
		1236
		1237	$cf::PLAYER{$login}
		1238	or cf::sync_job { !aio_stat path $login }
		1239	}
		1240
		1241	sub find($) {
		1242	return $cf::PLAYER{$_[0]} || do {
		1243	my $login = $_[0];
		1244
		1245	my $guard = cf::lock_acquire "user_find:$login";
		1246
		1247	$cf::PLAYER{$_[0]} || do {
		1248	# rename old playerfiles to new ones
		1249	#TODO: remove when no longer required
		1250	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1251	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1252	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1253	aio_unlink +(playerdir $login) . "/$login.pl";
		1254
		1255	my $pl = load_pl path $login
		1256	or return;
		1257	$cf::PLAYER{$login} = $pl
		1258	}
		1259	}
		1260	}
		1261
		1262	sub save($) {
		1263	my ($pl) = @_;
		1264
		1265	return if $pl->{deny_save};
		1266
		1267	my $path = path $pl;
		1268	my $guard = cf::lock_acquire "user_save:$path";
		1269
		1270	return if $pl->{deny_save};
		1271
		1272	aio_mkdir playerdir $pl, 0770;
		1273	$pl->{last_save} = $cf::RUNTIME;
		1274
		1275	$pl->save_pl ($path);
		1276	Coro::cede;
		1277	}
		1278
		1279	sub new($) {
		1280	my ($login) = @_;
		1281
		1282	my $self = create;
		1283
		1284	$self->ob->name ($login);
		1285	$self->{deny_save} = 1;
		1286
		1287	$cf::PLAYER{$login} = $self;
		1288
		1289	$self
		1290	}
		1291
		1292	=item $pl->quit_character
		1293
		1294	Nukes the player without looking back. If logged in, the connection will
		1295	be destroyed. May block for a long time.
		1296
		1297	=cut
		1298
		1299	sub quit_character {
		1300	my ($pl) = @_;
		1301
		1302	my $name = $pl->ob->name;
		1303
		1304	$pl->{deny_save} = 1;
		1305	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1306
		1307	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1308	$pl->deactivate;
		1309	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1310	$pl->ns->destroy if $pl->ns;
		1311
		1312	my $path = playerdir $pl;
		1313	my $temp = "$path~$cf::RUNTIME~deleting~";
		1314	aio_rename $path, $temp;
		1315	delete $cf::PLAYER{$pl->ob->name};
		1316	$pl->destroy;
		1317
		1318	my $prefix = qr<^~\Q$name\E/>;
		1319
		1320	# nuke player maps
		1321	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1322
		1323	IO::AIO::aio_rmtree $temp;
		1324	}
		1325
		1326	=item $pl->kick
		1327
		1328	Kicks a player out of the game. This destroys the connection.
		1329
		1330	=cut
		1331
		1332	sub kick {
		1333	my ($pl, $kicker) = @_;
		1334
		1335	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1336	$pl->killer ("kicked");
		1337	$pl->ns->destroy;
		1338	}
		1339
		1340	=item cf::player::list_logins
		1341
		1342	Returns am arrayref of all valid playernames in the system, can take a
		1343	while and may block, so not sync_job-capable, ever.
		1344
		1345	=cut
		1346
		1347	sub list_logins {
		1348	my $dirs = aio_readdir $PLAYERDIR
		1349	or return [];
		1350
		1351	my @logins;
		1352
		1353	for my $login (@$dirs) {
		1354	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1355	aio_read $fh, 0, 512, my $buf, 0 or next;
		1356	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1357
		1358	utf8::decode $login;
		1359	push @logins, $login;
		1360	}
		1361
		1362	\@logins
		1363	}
		1364
		1365	=item $player->maps
		1366
		1367	Returns an arrayref of map paths that are private for this
		1368	player. May block.
		1369
		1370	=cut
		1371
		1372	sub maps($) {
		1373	my ($pl) = @_;
		1374
		1375	$pl = ref $pl ? $pl->ob->name : $pl;
		1376
		1377	my $files = aio_readdir playerdir $pl
		1378	or return;
		1379
		1380	my @paths;
		1381
		1382	for (@$files) {
		1383	utf8::decode $_;
		1384	next if /\.(?:pl|pst)$/;
		1385	next unless /^$PATH_SEP/o;
		1386
		1387	push @paths, cf::map::normalise "~$pl/$_";
		1388	}
		1389
		1390	\@paths
		1391	}
		1392
		1393	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1394
		1395	Expand crossfire pod fragments into protocol xml.
		1396
		1397	=cut
		1398
		1399	sub expand_cfpod {
		1400	((my $self), (local $_)) = @_;
		1401
		1402	# escape & and <
		1403	s/&/&amp;/g;
		1404	s/(?<![BIUGH])</&lt;/g;
		1405
		1406	# this is buggy, it needs to properly take care of nested <'s
		1407
		1408	1 while
		1409	# replace B<>, I<>, U<> etc.
		1410	s/B<([^\>]*)>/<b>$1<\/b>/
		1411	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1412	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1413	# replace G<male|female> tags
		1414	|| s{G<([^>|]*)\|([^>]*)>}{
		1415	$self->gender ? $2 : $1
		1416	}ge
		1417	# replace H<hint text>
		1418	|| s{H<([^\>]*)>}
		1419	{
		1420	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1421	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1422	"")
		1423	[$self->{hintmode}]
		1424	}ge;
		1425
		1426	# create single paragraphs (very hackish)
		1427	s/(?<=\S)\n(?=\w)/ /g;
		1428
		1429	# compress some whitespace
		1430	s/\s+\n/\n/g; # ws line-ends
		1431	s/\n\n+/\n/g; # double lines
		1432	s/^\n+//; # beginning lines
		1433	s/\n+$//; # ending lines
		1434
		1435	$_
		1436	}
		1437
		1438	sub hintmode {
		1439	$_[0]{hintmode} = $_[1] if @_ > 1;
		1440	$_[0]{hintmode}
		1441	}
		1442
		1443	=item $player->ext_reply ($msgid, %msg)
		1444
		1445	Sends an ext reply to the player.
		1446
		1447	=cut
		1448
		1449	sub ext_reply($$%) {
		1450	my ($self, $id, %msg) = @_;
		1451
		1452	$msg{msgid} = $id;
		1453	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1454	}
		1455
		1456	=item $player->ext_event ($type, %msg)
		1457
		1458	Sends an ext event to the client.
		1459
		1460	=cut
		1461
		1462	sub ext_event($$%) {
		1463	my ($self, $type, %msg) = @_;
		1464
		1465	$self->ns->ext_event ($type, %msg);
		1466	}
		1467
		1468	=head3 cf::region
		1469
		1470	=over 4
		1471
		1472	=cut
		1473
		1474	package cf::region;
		1475
		1476	=item cf::region::find_by_path $path
		1477
		1478	Tries to decuce the likely region for a map knowing only its path.
		1479
		1480	=cut
		1481
		1482	sub find_by_path($) {
		1483	my ($path) = @_;
		1484
		1485	my ($match, $specificity);
		1486
		1487	for my $region (list) {
		1488	if ($region->match && $path =~ $region->match) {
		1489	($match, $specificity) = ($region, $region->specificity)
		1490	if $region->specificity > $specificity;
		1491	}
		1492	}
		1493
		1494	$match
		1495	}
		1496
		1497	=back
		1498
		1499	=head3 cf::map
		1500
		1501	=over 4
		1502
		1503	=cut
		1504
		1505	package cf::map;
		1506
		1507	use Fcntl;
		1508	use Coro::AIO;
		1509
		1510	use overload
		1511	'""' => \&as_string,
		1512	fallback => 1;
		1513
		1514	our $MAX_RESET = 3600;
		1515	our $DEFAULT_RESET = 3000;
		1516
		1517	sub generate_random_map {
		1518	my ($self, $rmp) = @_;
		1519	# mit "rum" bekleckern, nicht
		1520	$self->_create_random_map (
		1521	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1522	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1523	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1524	$rmp->{exit_on_final_map},
		1525	$rmp->{xsize}, $rmp->{ysize},
		1526	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1527	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1528	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1529	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1530	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1531	(cf::region::find $rmp->{region}), $rmp->{custom}
		1532	)
		1533	}
		1534
		1535	=item cf::map->register ($regex, $prio)
		1536
		1537	Register a handler for the map path matching the given regex at the
		1538	givne priority (higher is better, built-in handlers have priority 0, the
		1539	default).
		1540
		1541	=cut
		1542
729	sub register {	1543	sub register {
		1544	my (undef, $regex, $prio) = @_;
		1545	my $pkg = caller;
		1546
		1547	no strict;
		1548	push @{"$pkg\::ISA"}, __PACKAGE__;
		1549
		1550	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1551	}
		1552
		1553	# also paths starting with '/'
		1554	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1555
		1556	sub thawer_merge {
730	my ($base, $pkg) = @_;	1557	my ($self, $merge) = @_;
731		1558
732	#TODO	1559	# we have to keep some variables in memory intact
733	}	1560	local $self->{path};
		1561	local $self->{load_path};
734		1562
735	sub load_extension {	1563	$self->SUPER::thawer_merge ($merge);
		1564	}
		1565
		1566	sub normalise {
736	my ($path) = @_;	1567	my ($path, $base) = @_;
737		1568
738	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1569	$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		1570
744	warn "loading '$path' into '$pkg'\n";	1571	$path =~ s/\.map$//;
745		1572
746	open my $fh, "<:utf8", $path	1573	# map plan:
747	or die "$path: $!";	1574	#
		1575	# /! non-realised random map exit (special hack!)
		1576	# {... are special paths that are not being touched
		1577	# ?xxx/... are special absolute paths
		1578	# ?random/... random maps
		1579	# /... normal maps
		1580	# ~user/... per-player map of a specific user
748		1581
749	my $source =	1582	$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		1583
755	eval $source	1584	# treat it as relative path if it starts with
756	or die $@ ? "$path: $@\n"	1585	# something that looks reasonable
757	: "extension disabled.\n";	1586	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1587	$base or Carp::carp "normalise called with relative path and no base: '$path'";
758		1588
759	push @exts, $pkg;	1589	$base =~ s{[^/]+/?$}{};
760	$ext_pkg{$base} = $pkg;	1590	$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	# }	1591	}
778		1592
779	# remove commands	1593	for ($path) {
780	for my $name (keys %COMMAND) {	1594	redo if s{//}{/};
781	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1595	redo if s{/\.?/}{/};
		1596	redo if s{/[^/]+/\.\./}{/};
		1597	}
782		1598
783	if (@cb) {	1599	$path
784	$COMMAND{$name} = \@cb;	1600	}
		1601
		1602	sub new_from_path {
		1603	my (undef, $path, $base) = @_;
		1604
		1605	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1606
		1607	$path = normalise $path, $base;
		1608
		1609	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1610	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1611	my $self = bless cf::map::new, $pkg;
		1612	$self->{path} = $path; $self->path ($path);
		1613	$self->init; # pass $1 etc.
		1614	return $self;
		1615	}
		1616	}
		1617
		1618	Carp::carp "unable to resolve path '$path' (base '$base').";
		1619	()
		1620	}
		1621
		1622	sub init {
		1623	my ($self) = @_;
		1624
		1625	$self
		1626	}
		1627
		1628	sub as_string {
		1629	my ($self) = @_;
		1630
		1631	"$self->{path}"
		1632	}
		1633
		1634	# the displayed name, this is a one way mapping
		1635	sub visible_name {
		1636	&as_string
		1637	}
		1638
		1639	# the original (read-only) location
		1640	sub load_path {
		1641	my ($self) = @_;
		1642
		1643	"$MAPDIR/$self->{path}.map"
		1644	}
		1645
		1646	# the temporary/swap location
		1647	sub save_path {
		1648	my ($self) = @_;
		1649
		1650	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1651	"$TMPDIR/$path.map"
		1652	}
		1653
		1654	# the unique path, undef == no special unique path
		1655	sub uniq_path {
		1656	my ($self) = @_;
		1657
		1658	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1659	"$UNIQUEDIR/$path"
		1660	}
		1661
		1662	# and all this just because we cannot iterate over
		1663	# all maps in C++...
		1664	sub change_all_map_light {
		1665	my ($change) = @_;
		1666
		1667	$_->change_map_light ($change)
		1668	for grep $_->outdoor, values %cf::MAP;
		1669	}
		1670
		1671	sub decay_objects {
		1672	my ($self) = @_;
		1673
		1674	return if $self->{deny_reset};
		1675
		1676	$self->do_decay_objects;
		1677	}
		1678
		1679	sub unlink_save {
		1680	my ($self) = @_;
		1681
		1682	utf8::encode (my $save = $self->save_path);
		1683	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1684	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1685	}
		1686
		1687	sub load_header_from($) {
		1688	my ($self, $path) = @_;
		1689
		1690	utf8::encode $path;
		1691	#aio_open $path, O_RDONLY, 0
		1692	# or return;
		1693
		1694	$self->_load_header ($path)
		1695	or return;
		1696
		1697	$self->{load_path} = $path;
		1698
		1699	1
		1700	}
		1701
		1702	sub load_header_orig {
		1703	my ($self) = @_;
		1704
		1705	$self->load_header_from ($self->load_path)
		1706	}
		1707
		1708	sub load_header_temp {
		1709	my ($self) = @_;
		1710
		1711	$self->load_header_from ($self->save_path)
		1712	}
		1713
		1714	sub prepare_temp {
		1715	my ($self) = @_;
		1716
		1717	$self->last_access ((delete $self->{last_access})
		1718	|| $cf::RUNTIME); #d#
		1719	# safety
		1720	$self->{instantiate_time} = $cf::RUNTIME
		1721	if $self->{instantiate_time} > $cf::RUNTIME;
		1722	}
		1723
		1724	sub prepare_orig {
		1725	my ($self) = @_;
		1726
		1727	$self->{load_original} = 1;
		1728	$self->{instantiate_time} = $cf::RUNTIME;
		1729	$self->last_access ($cf::RUNTIME);
		1730	$self->instantiate;
		1731	}
		1732
		1733	sub load_header {
		1734	my ($self) = @_;
		1735
		1736	if ($self->load_header_temp) {
		1737	$self->prepare_temp;
785	} else {	1738	} else {
786	delete $COMMAND{$name};	1739	$self->load_header_orig
787	}	1740	or return;
		1741	$self->prepare_orig;
		1742	}
		1743
		1744	$self->{deny_reset} = 1
		1745	if $self->no_reset;
		1746
		1747	$self->default_region (cf::region::find_by_path $self->{path})
		1748	unless $self->default_region;
		1749
788	}	1750	1
		1751	}
789		1752
790	# remove extcmds	1753	sub find;
791	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1754	sub find {
792	delete $EXTCMD{$name};	1755	my ($path, $origin) = @_;
		1756
		1757	$path = normalise $path, $origin && $origin->path;
		1758
		1759	cf::lock_wait "map_find:$path";
		1760
		1761	$cf::MAP{$path} || do {
		1762	my $guard = cf::lock_acquire "map_find:$path";
		1763	my $map = new_from_path cf::map $path
		1764	or return;
		1765
		1766	$map->{last_save} = $cf::RUNTIME;
		1767
		1768	$map->load_header
		1769	or return;
		1770
		1771	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1772	# doing this can freeze the server in a sync job, obviously
		1773	#$cf::WAIT_FOR_TICK->wait;
		1774	$map->reset;
		1775	undef $guard;
		1776	return find $path;
		1777	}
		1778
		1779	$cf::MAP{$path} = $map
		1780	}
		1781	}
		1782
		1783	sub pre_load { }
		1784	sub post_load { }
		1785
		1786	sub load {
		1787	my ($self) = @_;
		1788
		1789	local $self->{deny_reset} = 1; # loading can take a long time
		1790
		1791	my $path = $self->{path};
		1792
793	}	1793	{
		1794	my $guard = cf::lock_acquire "map_load:$path";
794		1795
795	if (my $cb = $pkg->can ("unload")) {	1796	return if $self->in_memory != cf::MAP_SWAPPED;
796	eval {	1797
797	$cb->($pkg);	1798	$self->in_memory (cf::MAP_LOADING);
		1799
		1800	$self->alloc;
		1801
		1802	$self->pre_load;
		1803	Coro::cede;
		1804
		1805	$self->_load_objects ($self->{load_path}, 1)
		1806	or return;
		1807
		1808	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1809	if delete $self->{load_original};
		1810
		1811	if (my $uniq = $self->uniq_path) {
		1812	utf8::encode $uniq;
		1813	if (aio_open $uniq, O_RDONLY, 0) {
		1814	$self->clear_unique_items;
		1815	$self->_load_objects ($uniq, 0);
798	1	1816	}
799	} or warn "$pkg unloaded, but with errors: $@";	1817	}
800	}
801		1818
802	Symbol::delete_package $pkg;	1819	Coro::cede;
803	}	1820	# now do the right thing for maps
		1821	$self->link_multipart_objects;
		1822	$self->difficulty ($self->estimate_difficulty)
		1823	unless $self->difficulty;
		1824	Coro::cede;
804		1825
805	sub load_extensions {	1826	unless ($self->{deny_activate}) {
806	for my $ext (<$LIBDIR/*.ext>) {	1827	$self->decay_objects;
807	next unless -r $ext;	1828	$self->fix_auto_apply;
808	eval {	1829	$self->update_buttons;
809	load_extension $ext;	1830	Coro::cede;
810	1	1831	$self->set_darkness_map;
811	} or warn "$ext not loaded: $@";	1832	Coro::cede;
812	}	1833	$self->activate;
813	}	1834	}
814		1835
815	#############################################################################	1836	$self->in_memory (cf::MAP_IN_MEMORY);
816	# load/save/clean perl data associated with a map	1837	}
817		1838
818	*cf::mapsupport::on_clean = sub {	1839	$self->post_load;
		1840	}
		1841
		1842	sub customise_for {
		1843	my ($self, $ob) = @_;
		1844
		1845	return find "~" . $ob->name . "/" . $self->{path}
		1846	if $self->per_player;
		1847
		1848	# return find "?party/" . $ob->name . "/" . $self->{path}
		1849	# if $self->per_party;
		1850
		1851	$self
		1852	}
		1853
		1854	# find and load all maps in the 3x3 area around a map
		1855	sub load_diag {
819	my ($map) = @_;	1856	my ($map) = @_;
820		1857
821	my $path = $map->tmpname;	1858	my @diag; # diagonal neighbours
822	defined $path or return;
823		1859
824	unlink "$path.pst";	1860	for (0 .. 3) {
825	};	1861	my $neigh = $map->tile_path ($_)
		1862	or next;
		1863	$neigh = find $neigh, $map
		1864	or next;
		1865	$neigh->load;
826		1866
827	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1867	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1868	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1869	}
828		1870
829	#############################################################################	1871	for (@diag) {
830	# load/save perl data associated with player->ob objects	1872	my $neigh = find @$_
831		1873	or next;
832	sub all_objects(@) {	1874	$neigh->load;
833	@_, map all_objects ($_->inv), @_	1875	}
834	}	1876	}
835		1877
836	# TODO: compatibility cruft, remove when no longer needed	1878	sub find_sync {
837	cf::player->attach (	1879	my ($path, $origin) = @_;
838	on_load => sub {
839	my ($pl, $path) = @_;
840		1880
841	for my $o (all_objects $pl->ob) {	1881	cf::sync_job { find $path, $origin }
842	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1882	}
843	$o->set_ob_key_value ("_perl_data");
844		1883
845	%$o = %{ Storable::thaw pack "H*", $value };	1884	sub do_load_sync {
		1885	my ($map) = @_;
		1886
		1887	cf::sync_job { $map->load };
		1888	}
		1889
		1890	our %MAP_PREFETCH;
		1891	our $MAP_PREFETCHER = undef;
		1892
		1893	sub find_async {
		1894	my ($path, $origin) = @_;
		1895
		1896	$path = normalise $path, $origin && $origin->{path};
		1897
		1898	if (my $map = $cf::MAP{$path}) {
		1899	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1900	}
		1901
		1902	undef $MAP_PREFETCH{$path};
		1903	$MAP_PREFETCHER ||= cf::async {
		1904	while (%MAP_PREFETCH) {
		1905	for my $path (keys %MAP_PREFETCH) {
		1906	my $map = find $path
		1907	or next;
		1908	$map->load;
		1909
		1910	delete $MAP_PREFETCH{$path};
846	}	1911	}
847	}	1912	}
		1913	undef $MAP_PREFETCHER;
		1914	};
		1915	$MAP_PREFETCHER->prio (6);
		1916
		1917	()
		1918	}
		1919
		1920	sub save {
		1921	my ($self) = @_;
		1922
		1923	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1924
		1925	$self->{last_save} = $cf::RUNTIME;
		1926
		1927	return unless $self->dirty;
		1928
		1929	my $save = $self->save_path; utf8::encode $save;
		1930	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1931
		1932	$self->{load_path} = $save;
		1933
		1934	return if $self->{deny_save};
		1935
		1936	local $self->{last_access} = $self->last_access;#d#
		1937
		1938	cf::async {
		1939	$_->contr->save for $self->players;
		1940	};
		1941
		1942	if ($uniq) {
		1943	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1944	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1945	} else {
		1946	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
848	},	1947	}
849	);	1948	}
850		1949
851	#############################################################################	1950	sub swap_out {
		1951	my ($self) = @_;
852		1952
853	=head2 CORE EXTENSIONS	1953	# save first because save cedes
		1954	$self->save;
854		1955
855	Functions and methods that extend core crossfire objects.	1956	my $lock = cf::lock_acquire "map_data:" . $self->path;
856		1957
857	=head3 cf::player	1958	return if $self->players;
		1959	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1960	return if $self->{deny_save};
		1961
		1962	$self->clear;
		1963	$self->in_memory (cf::MAP_SWAPPED);
		1964	}
		1965
		1966	sub reset_at {
		1967	my ($self) = @_;
		1968
		1969	# TODO: safety, remove and allow resettable per-player maps
		1970	return 1e99 if $self->{deny_reset};
		1971
		1972	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1973	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1974
		1975	$time + $to
		1976	}
		1977
		1978	sub should_reset {
		1979	my ($self) = @_;
		1980
		1981	$self->reset_at <= $cf::RUNTIME
		1982	}
		1983
		1984	sub reset {
		1985	my ($self) = @_;
		1986
		1987	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1988
		1989	return if $self->players;
		1990
		1991	warn "resetting map ", $self->path;
		1992
		1993	$self->in_memory (cf::MAP_SWAPPED);
		1994
		1995	# need to save uniques path
		1996	unless ($self->{deny_save}) {
		1997	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1998
		1999	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2000	if $uniq;
		2001	}
		2002
		2003	delete $cf::MAP{$self->path};
		2004
		2005	$self->clear;
		2006
		2007	$_->clear_links_to ($self) for values %cf::MAP;
		2008
		2009	$self->unlink_save;
		2010	$self->destroy;
		2011	}
		2012
		2013	my $nuke_counter = "aaaa";
		2014
		2015	sub nuke {
		2016	my ($self) = @_;
		2017
		2018	delete $cf::MAP{$self->path};
		2019
		2020	$self->unlink_save;
		2021
		2022	bless $self, "cf::map";
		2023	delete $self->{deny_reset};
		2024	$self->{deny_save} = 1;
		2025	$self->reset_timeout (1);
		2026	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2027
		2028	$cf::MAP{$self->path} = $self;
		2029
		2030	$self->reset; # polite request, might not happen
		2031	}
		2032
		2033	=item $maps = cf::map::tmp_maps
		2034
		2035	Returns an arrayref with all map paths of currently instantiated and saved
		2036	maps. May block.
		2037
		2038	=cut
		2039
		2040	sub tmp_maps() {
		2041	[
		2042	map {
		2043	utf8::decode $_;
		2044	/\.map$/
		2045	? normalise $_
		2046	: ()
		2047	} @{ aio_readdir $TMPDIR or [] }
		2048	]
		2049	}
		2050
		2051	=item $maps = cf::map::random_maps
		2052
		2053	Returns an arrayref with all map paths of currently instantiated and saved
		2054	random maps. May block.
		2055
		2056	=cut
		2057
		2058	sub random_maps() {
		2059	[
		2060	map {
		2061	utf8::decode $_;
		2062	/\.map$/
		2063	? normalise "?random/$_"
		2064	: ()
		2065	} @{ aio_readdir $RANDOMDIR or [] }
		2066	]
		2067	}
		2068
		2069	=item cf::map::unique_maps
		2070
		2071	Returns an arrayref of paths of all shared maps that have
		2072	instantiated unique items. May block.
		2073
		2074	=cut
		2075
		2076	sub unique_maps() {
		2077	[
		2078	map {
		2079	utf8::decode $_;
		2080	/\.map$/
		2081	? normalise $_
		2082	: ()
		2083	} @{ aio_readdir $UNIQUEDIR or [] }
		2084	]
		2085	}
		2086
		2087	package cf;
		2088
		2089	=back
		2090
		2091	=head3 cf::object
		2092
		2093	=cut
		2094
		2095	package cf::object;
858		2096
859	=over 4	2097	=over 4
860		2098
861	=item cf::player::exists $login	2099	=item $ob->inv_recursive
862		2100
863	Returns true when the given account exists.	2101	Returns the inventory of the object _and_ their inventories, recursively.
864		2102
865	=cut	2103	=cut
866		2104
867	sub cf::player::exists($) {	2105	sub inv_recursive_;
868	cf::player::find $_[0]	2106	sub inv_recursive_ {
869	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2107	map { $_, inv_recursive_ $_->inv } @_
870	}	2108	}
871		2109
872	=item $player->ext_reply ($msgid, $msgtype, %msg)	2110	sub inv_recursive {
873		2111	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	}	2112	}
		2113
		2114	package cf;
885		2115
886	=back	2116	=back
887		2117
888	=head3 cf::object::player	2118	=head3 cf::object::player
889		2119
…		…
905		2135
906	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2136	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
907		2137
908	if ($self->{record_replies}) {	2138	if ($self->{record_replies}) {
909	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2139	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2140
910	} else {	2141	} else {
		2142	my $pl = $self->contr;
		2143
		2144	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2145	my $diag = $pl->{npc_dialog};
		2146	$diag->{pl}->ext_reply (
		2147	$diag->{id},
		2148	msgtype => "reply",
		2149	msg => $diag->{pl}->expand_cfpod ($msg),
		2150	add_topics => []
		2151	);
		2152
		2153	} else {
911	$msg = $npc->name . " says: $msg" if $npc;	2154	$msg = $npc->name . " says: $msg" if $npc;
912	$self->message ($msg, $flags);	2155	$self->message ($msg, $flags);
		2156	}
913	}	2157	}
914	}	2158	}
915		2159
916	=item $player_object->may ("access")	2160	=item $player_object->may ("access")
917		2161
…		…
927	(ref $cf::CFG{"may_$access"}	2171	(ref $cf::CFG{"may_$access"}
928	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2172	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
929	: $cf::CFG{"may_$access"})	2173	: $cf::CFG{"may_$access"})
930	}	2174	}
931		2175
		2176	=item $player_object->enter_link
		2177
		2178	Freezes the player and moves him/her to a special map (C<{link}>).
		2179
		2180	The player should be reasonably safe there for short amounts of time. You
		2181	I<MUST> call C<leave_link> as soon as possible, though.
		2182
		2183	Will never block.
		2184
		2185	=item $player_object->leave_link ($map, $x, $y)
		2186
		2187	Moves the player out of the special C<{link}> map onto the specified
		2188	map. If the map is not valid (or omitted), the player will be moved back
		2189	to the location he/she was before the call to C<enter_link>, or, if that
		2190	fails, to the emergency map position.
		2191
		2192	Might block.
		2193
		2194	=cut
		2195
		2196	sub link_map {
		2197	unless ($LINK_MAP) {
		2198	$LINK_MAP = cf::map::find "{link}"
		2199	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2200	$LINK_MAP->load;
		2201	}
		2202
		2203	$LINK_MAP
		2204	}
		2205
		2206	sub cf::object::player::enter_link {
		2207	my ($self) = @_;
		2208
		2209	$self->deactivate_recursive;
		2210
		2211	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2212
		2213	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2214	if $self->map && $self->map->{path} ne "{link}";
		2215
		2216	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2217	}
		2218
		2219	sub cf::object::player::leave_link {
		2220	my ($self, $map, $x, $y) = @_;
		2221
		2222	return unless $self->contr->active;
		2223
		2224	my $link_pos = delete $self->{_link_pos};
		2225
		2226	unless ($map) {
		2227	# restore original map position
		2228	($map, $x, $y) = @{ $link_pos || [] };
		2229	$map = cf::map::find $map;
		2230
		2231	unless ($map) {
		2232	($map, $x, $y) = @$EMERGENCY_POSITION;
		2233	$map = cf::map::find $map
		2234	or die "FATAL: cannot load emergency map\n";
		2235	}
		2236	}
		2237
		2238	($x, $y) = (-1, -1)
		2239	unless (defined $x) && (defined $y);
		2240
		2241	# use -1 or undef as default coordinates, not 0, 0
		2242	($x, $y) = ($map->enter_x, $map->enter_y)
		2243	if $x <=0 && $y <= 0;
		2244
		2245	$map->load;
		2246	$map->load_diag;
		2247
		2248	return unless $self->contr->active;
		2249	$self->activate_recursive;
		2250
		2251	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2252	$self->enter_map ($map, $x, $y);
		2253	}
		2254
		2255	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2256
		2257	Moves the player to the given map-path and coordinates by first freezing
		2258	her, loading and preparing them map, calling the provided $check callback
		2259	that has to return the map if sucecssful, and then unfreezes the player on
		2260	the new (success) or old (failed) map position.
		2261
		2262	=cut
		2263
		2264	our $GOTOGEN;
		2265
		2266	sub cf::object::player::goto {
		2267	my ($self, $path, $x, $y, $check) = @_;
		2268
		2269	# do generation counting so two concurrent goto's will be executed in-order
		2270	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2271
		2272	$self->enter_link;
		2273
		2274	(async {
		2275	my $map = eval {
		2276	my $map = cf::map::find $path;
		2277
		2278	if ($map) {
		2279	$map = $map->customise_for ($self);
		2280	$map = $check->($map) if $check && $map;
		2281	} else {
		2282	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2283	}
		2284
		2285	$map
		2286	};
		2287
		2288	if ($@) {
		2289	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2290	LOG llevError | logBacktrace, Carp::longmess $@;
		2291	}
		2292
		2293	if ($gen == $self->{_goto_generation}) {
		2294	delete $self->{_goto_generation};
		2295	$self->leave_link ($map, $x, $y);
		2296	}
		2297	})->prio (1);
		2298	}
		2299
		2300	=item $player_object->enter_exit ($exit_object)
		2301
		2302	=cut
		2303
		2304	sub parse_random_map_params {
		2305	my ($spec) = @_;
		2306
		2307	my $rmp = { # defaults
		2308	xsize => (cf::rndm 15, 40),
		2309	ysize => (cf::rndm 15, 40),
		2310	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2311	#layout => string,
		2312	};
		2313
		2314	for (split /\n/, $spec) {
		2315	my ($k, $v) = split /\s+/, $_, 2;
		2316
		2317	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2318	}
		2319
		2320	$rmp
		2321	}
		2322
		2323	sub prepare_random_map {
		2324	my ($exit) = @_;
		2325
		2326	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2327
		2328	# all this does is basically replace the /! path by
		2329	# a new random map path (?random/...) with a seed
		2330	# that depends on the exit object
		2331
		2332	my $rmp = parse_random_map_params $exit->msg;
		2333
		2334	if ($exit->map) {
		2335	$rmp->{region} = $exit->region->name;
		2336	$rmp->{origin_map} = $exit->map->path;
		2337	$rmp->{origin_x} = $exit->x;
		2338	$rmp->{origin_y} = $exit->y;
		2339	}
		2340
		2341	$rmp->{random_seed} ||= $exit->random_seed;
		2342
		2343	my $data = cf::to_json $rmp;
		2344	my $md5 = Digest::MD5::md5_hex $data;
		2345	my $meta = "$RANDOMDIR/$md5.meta";
		2346
		2347	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2348	aio_write $fh, 0, (length $data), $data, 0;
		2349	undef $fh;
		2350	aio_rename "$meta~", $meta;
		2351
		2352	$exit->slaying ("?random/$md5");
		2353	$exit->msg (undef);
		2354	}
		2355	}
		2356
		2357	sub cf::object::player::enter_exit {
		2358	my ($self, $exit) = @_;
		2359
		2360	return unless $self->type == cf::PLAYER;
		2361
		2362	if ($exit->slaying eq "/!") {
		2363	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2364	# the problem is that $exit might not survive long enough
		2365	# so it needs to be done right now, right here
		2366	cf::sync_job { prepare_random_map $exit };
		2367	}
		2368
		2369	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2370	my $hp = $exit->stats->hp;
		2371	my $sp = $exit->stats->sp;
		2372
		2373	$self->enter_link;
		2374
		2375	# if exit is damned, update players death & WoR home-position
		2376	$self->contr->savebed ($slaying, $hp, $sp)
		2377	if $exit->flag (FLAG_DAMNED);
		2378
		2379	(async {
		2380	$self->deactivate_recursive; # just to be sure
		2381	unless (eval {
		2382	$self->goto ($slaying, $hp, $sp);
		2383
		2384	1;
		2385	}) {
		2386	$self->message ("Something went wrong deep within the crossfire server. "
		2387	. "I'll try to bring you back to the map you were before. "
		2388	. "Please report this to the dungeon master!",
		2389	cf::NDI_UNIQUE | cf::NDI_RED);
		2390
		2391	warn "ERROR in enter_exit: $@";
		2392	$self->leave_link;
		2393	}
		2394	})->prio (1);
		2395	}
		2396
932	=head3 cf::client	2397	=head3 cf::client
933		2398
934	=over 4	2399	=over 4
935		2400
936	=item $client->send_drawinfo ($text, $flags)	2401	=item $client->send_drawinfo ($text, $flags)
…		…
942		2407
943	sub cf::client::send_drawinfo {	2408	sub cf::client::send_drawinfo {
944	my ($self, $text, $flags) = @_;	2409	my ($self, $text, $flags) = @_;
945		2410
946	utf8::encode $text;	2411	utf8::encode $text;
947	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2412	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
948	}	2413	}
949		2414
		2415	=item $client->send_msg ($color, $type, $msg, [extra...])
		2416
		2417	Send a drawinfo or msg packet to the client, formatting the msg for the
		2418	client if neccessary. C<$type> should be a string identifying the type of
		2419	the message, with C<log> being the default. If C<$color> is negative, suppress
		2420	the message unless the client supports the msg packet.
		2421
		2422	=cut
		2423
		2424	sub cf::client::send_msg {
		2425	my ($self, $color, $type, $msg, @extra) = @_;
		2426
		2427	$msg = $self->pl->expand_cfpod ($msg);
		2428
		2429	return unless @extra || length $msg;
		2430
		2431	if ($self->can_msg) {
		2432	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2433	} else {
		2434	# replace some tags by gcfclient-compatible ones
		2435	for ($msg) {
		2436	1 while
		2437	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2438	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2439	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2440	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2441	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2442	}
		2443
		2444	if ($color >= 0) {
		2445	if (0 && $msg =~ /\[/) {
		2446	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2447	} else {
		2448	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2449	$self->send_packet ("drawinfo $color $msg")
		2450	}
		2451	}
		2452	}
		2453	}
		2454
		2455	=item $client->ext_event ($type, %msg)
		2456
		2457	Sends an ext event to the client.
		2458
		2459	=cut
		2460
		2461	sub cf::client::ext_event($$%) {
		2462	my ($self, $type, %msg) = @_;
		2463
		2464	$msg{msgtype} = "event_$type";
		2465	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
		2466	}
950		2467
951	=item $success = $client->query ($flags, "text", \&cb)	2468	=item $success = $client->query ($flags, "text", \&cb)
952		2469
953	Queues a query to the client, calling the given callback with	2470	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>,	2471	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>.	2472	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
956		2473
957	Queries can fail, so check the return code. Or don't, as queries will become	2474	Queries can fail, so check the return code. Or don't, as queries will
958	reliable at some point in the future.	2475	become reliable at some point in the future.
959		2476
960	=cut	2477	=cut
961		2478
962	sub cf::client::query {	2479	sub cf::client::query {
963	my ($self, $flags, $text, $cb) = @_;	2480	my ($self, $flags, $text, $cb) = @_;
…		…
971	utf8::encode $text;	2488	utf8::encode $text;
972	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2489	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
973		2490
974	$self->send_packet ($self->{query_queue}[0][0])	2491	$self->send_packet ($self->{query_queue}[0][0])
975	if @{ $self->{query_queue} } == 1;	2492	if @{ $self->{query_queue} } == 1;
		2493
		2494	1
976	}	2495	}
977		2496
978	cf::client->attach (	2497	cf::client->attach (
		2498	on_connect => sub {
		2499	my ($ns) = @_;
		2500
		2501	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2502	},
979	on_reply => sub {	2503	on_reply => sub {
980	my ($ns, $msg) = @_;	2504	my ($ns, $msg) = @_;
981		2505
982	# this weird shuffling is so that direct followup queries	2506	# this weird shuffling is so that direct followup queries
983	# get handled first	2507	# get handled first
984	my $queue = delete $ns->{query_queue};	2508	my $queue = delete $ns->{query_queue}
		2509	or return; # be conservative, not sure how that can happen, but we saw a crash here
985		2510
986	(shift @$queue)->[1]->($msg);	2511	(shift @$queue)->[1]->($msg);
		2512	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
987		2513
988	push @{ $ns->{query_queue} }, @$queue;	2514	push @{ $ns->{query_queue} }, @$queue;
989		2515
990	if (@{ $ns->{query_queue} } == @$queue) {	2516	if (@{ $ns->{query_queue} } == @$queue) {
991	if (@$queue) {	2517	if (@$queue) {
…		…
993	} else {	2519	} else {
994	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2520	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
995	}	2521	}
996	}	2522	}
997	},	2523	},
		2524	on_exticmd => sub {
		2525	my ($ns, $buf) = @_;
		2526
		2527	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2528
		2529	if (ref $msg) {
		2530	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2531	if (my %reply = $cb->($ns, $msg)) {
		2532	$reply{msgid} = $msg->{msgid};
		2533	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2534	}
		2535	}
		2536	} else {
		2537	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2538	}
		2539
		2540	cf::override;
		2541	},
998	);	2542	);
999		2543
1000	=item $client->coro (\&cb)	2544	=item $client->async (\&cb)
1001		2545
1002	Create a new coroutine, running the specified callback. The coroutine will	2546	Create a new coroutine, running the specified callback. The coroutine will
1003	be automatically cancelled when the client gets destroyed (e.g. on logout,	2547	be automatically cancelled when the client gets destroyed (e.g. on logout,
1004	or loss of connection).	2548	or loss of connection).
1005		2549
1006	=cut	2550	=cut
1007		2551
1008	sub cf::client::coro {	2552	sub cf::client::async {
1009	my ($self, $cb) = @_;	2553	my ($self, $cb) = @_;
1010		2554
1011	my $coro; $coro = async {	2555	my $coro = &Coro::async ($cb);
1012	eval {
1013	$cb->();
1014	};
1015	warn $@ if $@;
1016	};
1017		2556
1018	$coro->on_destroy (sub {	2557	$coro->on_destroy (sub {
1019	delete $self->{_coro}{$coro+0};	2558	delete $self->{_coro}{$coro+0};
1020	});	2559	});
1021		2560
…		…
1054		2593
1055	# here we export the classes and methods available to script code	2594	# here we export the classes and methods available to script code
1056		2595
1057	=pod	2596	=pod
1058		2597
1059	The following fucntions and emthods are available within a safe environment:	2598	The following functions and methods are available within a safe environment:
1060		2599
1061	cf::object contr pay_amount pay_player map	2600	cf::object
		2601	contr pay_amount pay_player map x y force_find force_add
		2602	insert remove
		2603
1062	cf::object::player player	2604	cf::object::player
1063	cf::player peaceful	2605	player
1064	cf::map trigger	2606
		2607	cf::player
		2608	peaceful
		2609
		2610	cf::map
		2611	trigger
1065		2612
1066	=cut	2613	=cut
1067		2614
1068	for (	2615	for (
1069	["cf::object" => qw(contr pay_amount pay_player map)],	2616	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2617	insert remove)],
1070	["cf::object::player" => qw(player)],	2618	["cf::object::player" => qw(player)],
1071	["cf::player" => qw(peaceful)],	2619	["cf::player" => qw(peaceful)],
1072	["cf::map" => qw(trigger)],	2620	["cf::map" => qw(trigger)],
1073	) {	2621	) {
1074	no strict 'refs';	2622	no strict 'refs';
…		…
1145	=back	2693	=back
1146		2694
1147	=cut	2695	=cut
1148		2696
1149	#############################################################################	2697	#############################################################################
		2698	# the server's init and main functions
1150		2699
1151	=head2 EXTENSION DATABASE SUPPORT	2700	sub load_facedata($) {
		2701	my ($path) = @_;
1152		2702
1153	Crossfire maintains a very simple database for extension use. It can	2703	warn "loading facedata from $path\n";
1154	currently store anything that can be serialised using Storable, which
1155	excludes objects.
1156		2704
1157	The parameter C<$family> should best start with the name of the extension	2705	my $facedata;
1158	using it, it should be unique.	2706	0 < aio_load $path, $facedata
		2707	or die "$path: $!";
1159		2708
1160	=over 4	2709	$facedata = Coro::Storable::thaw $facedata;
1161		2710
1162	=item $hashref = cf::db_get $family	2711	$facedata->{version} == 2
		2712	or cf::cleanup "$path: version mismatch, cannot proceed.";
1163		2713
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	}	2714	{
		2715	my $faces = $facedata->{faceinfo};
1201		2716
1202	my $pid;	2717	while (my ($face, $info) = each %$faces) {
1203		2718	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1204	sub db_save() {	2719	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
1205	warn "saving database $path\n";#d# remove later	2720	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
1206	waitpid $pid, 0 if $pid;	2721	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1207	if (0 == ($pid = fork)) {	2722	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]} = $_[1];
1242	}
1243	db_dirty;
1244	}
1245
1246	cf::global->attach (
1247	prio => 10000,
1248	on_cleanup => sub {
1249	db_sync;
1250	},	2723	}
1251	);
1252	}
1253		2724
1254	#############################################################################	2725	while (my ($face, $info) = each %$faces) {
1255	# the server's main()	2726	next unless $info->{smooth};
		2727	my $idx = cf::face::find $face
		2728	or next;
		2729	if (my $smooth = cf::face::find $info->{smooth}) {
		2730	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2731	} else {
		2732	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2733	}
		2734	Coro::cede;
		2735	}
		2736	}
		2737
		2738	{
		2739	my $anims = $facedata->{animinfo};
		2740
		2741	while (my ($anim, $info) = each %$anims) {
		2742	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2743	Coro::cede;
		2744	}
		2745
		2746	cf::anim::invalidate_all; # d'oh
		2747	}
		2748
		2749	1
		2750	}
		2751
		2752	sub reload_regions {
		2753	load_resource_file "$MAPDIR/regions"
		2754	or die "unable to load regions file\n";
		2755	}
		2756
		2757	sub reload_facedata {
		2758	load_facedata "$DATADIR/facedata"
		2759	or die "unable to load facedata\n";
		2760	}
		2761
		2762	sub reload_archetypes {
		2763	load_resource_file "$DATADIR/archetypes"
		2764	or die "unable to load archetypes\n";
		2765	#d# NEED to laod twice to resolve forward references
		2766	# this really needs to be done in an extra post-pass
		2767	# (which needs to be synchronous, so solve it differently)
		2768	load_resource_file "$DATADIR/archetypes"
		2769	or die "unable to load archetypes\n";
		2770	}
		2771
		2772	sub reload_treasures {
		2773	load_resource_file "$DATADIR/treasures"
		2774	or die "unable to load treasurelists\n";
		2775	}
		2776
		2777	sub reload_resources {
		2778	warn "reloading resource files...\n";
		2779
		2780	reload_regions;
		2781	reload_facedata;
		2782	#reload_archetypes;#d#
		2783	reload_archetypes;
		2784	reload_treasures;
		2785
		2786	warn "finished reloading resource files\n";
		2787	}
		2788
		2789	sub init {
		2790	reload_resources;
		2791	}
1256		2792
1257	sub cfg_load {	2793	sub cfg_load {
1258	open my $fh, "<:utf8", cf::confdir . "/config"	2794	open my $fh, "<:utf8", "$CONFDIR/config"
1259	or return;	2795	or return;
1260		2796
1261	local $/;	2797	local $/;
1262	*CFG = YAML::Syck::Load <$fh>;	2798	*CFG = YAML::Syck::Load <$fh>;
		2799
		2800	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2801
		2802	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2803	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2804
		2805	if (exists $CFG{mlockall}) {
		2806	eval {
		2807	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2808	and die "WARNING: m(un)lockall failed: $!\n";
		2809	};
		2810	warn $@ if $@;
		2811	}
1263	}	2812	}
1264		2813
1265	sub main {	2814	sub main {
		2815	# we must not ever block the main coroutine
		2816	local $Coro::idle = sub {
		2817	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2818	(async {
		2819	Event::one_event;
		2820	})->prio (Coro::PRIO_MAX);
		2821	};
		2822
1266	cfg_load;	2823	cfg_load;
1267	db_load;	2824	db_init;
1268	load_extensions;	2825	load_extensions;
		2826
		2827	$TICK_WATCHER->start;
1269	Event::loop;	2828	Event::loop;
1270	}	2829	}
1271		2830
1272	#############################################################################	2831	#############################################################################
1273	# initialisation	2832	# initialisation and cleanup
1274		2833
1275	sub _perl_reload() {	2834	# install some emergency cleanup handlers
		2835	BEGIN {
		2836	for my $signal (qw(INT HUP TERM)) {
		2837	Event->signal (
		2838	reentrant => 0,
		2839	data => WF_AUTOCANCEL,
		2840	signal => $signal,
		2841	prio => 0,
		2842	cb => sub {
		2843	cf::cleanup "SIG$signal";
		2844	},
		2845	);
		2846	}
		2847	}
		2848
		2849	sub write_runtime {
		2850	my $runtime = "$LOCALDIR/runtime";
		2851
		2852	# first touch the runtime file to show we are still running:
		2853	# the fsync below can take a very very long time.
		2854
		2855	IO::AIO::aio_utime $runtime, undef, undef;
		2856
		2857	my $guard = cf::lock_acquire "write_runtime";
		2858
		2859	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2860	or return;
		2861
		2862	my $value = $cf::RUNTIME + 90 + 10;
		2863	# 10 is the runtime save interval, for a monotonic clock
		2864	# 60 allows for the watchdog to kill the server.
		2865
		2866	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2867	and return;
		2868
		2869	# always fsync - this file is important
		2870	aio_fsync $fh
		2871	and return;
		2872
		2873	# touch it again to show we are up-to-date
		2874	aio_utime $fh, undef, undef;
		2875
		2876	close $fh
		2877	or return;
		2878
		2879	aio_rename "$runtime~", $runtime
		2880	and return;
		2881
		2882	warn "runtime file written.\n";
		2883
		2884	1
		2885	}
		2886
		2887	sub emergency_save() {
		2888	my $freeze_guard = cf::freeze_mainloop;
		2889
		2890	warn "enter emergency perl save\n";
		2891
		2892	cf::sync_job {
		2893	# use a peculiar iteration method to avoid tripping on perl
		2894	# refcount bugs in for. also avoids problems with players
		2895	# and maps saved/destroyed asynchronously.
		2896	warn "begin emergency player save\n";
		2897	for my $login (keys %cf::PLAYER) {
		2898	my $pl = $cf::PLAYER{$login} or next;
		2899	$pl->valid or next;
		2900	$pl->save;
		2901	}
		2902	warn "end emergency player save\n";
		2903
		2904	warn "begin emergency map save\n";
		2905	for my $path (keys %cf::MAP) {
		2906	my $map = $cf::MAP{$path} or next;
		2907	$map->valid or next;
		2908	$map->save;
		2909	}
		2910	warn "end emergency map save\n";
		2911
		2912	warn "begin emergency database checkpoint\n";
		2913	BDB::db_env_txn_checkpoint $DB_ENV;
		2914	warn "end emergency database checkpoint\n";
		2915	};
		2916
		2917	warn "leave emergency perl save\n";
		2918	}
		2919
		2920	sub post_cleanup {
		2921	my ($make_core) = @_;
		2922
		2923	warn Carp::longmess "post_cleanup backtrace"
		2924	if $make_core;
		2925	}
		2926
		2927	sub do_reload_perl() {
		2928	# can/must only be called in main
		2929	if ($Coro::current != $Coro::main) {
		2930	warn "can only reload from main coroutine";
		2931	return;
		2932	}
		2933
1276	warn "reloading...";	2934	warn "reloading...";
1277		2935
1278	eval {	2936	warn "entering sync_job";
1279	local $FREEZE = 1;
1280		2937
		2938	cf::sync_job {
		2939	cf::write_runtime; # external watchdog should not bark
1281	cf::emergency_save;	2940	cf::emergency_save;
		2941	cf::write_runtime; # external watchdog should not bark
1282		2942
1283	# cancel all watchers	2943	warn "syncing database to disk";
		2944	BDB::db_env_txn_checkpoint $DB_ENV;
		2945
		2946	# if anything goes wrong in here, we should simply crash as we already saved
		2947
		2948	warn "cancelling all WF_AUTOCANCEL watchers";
1284	for (Event::all_watchers) {	2949	for (Event::all_watchers) {
1285	$_->cancel if $_->data & WF_AUTOCANCEL;	2950	$_->cancel if $_->data & WF_AUTOCANCEL;
1286	}	2951	}
1287		2952
		2953	warn "flushing outstanding aio requests";
		2954	for (;;) {
		2955	BDB::flush;
		2956	IO::AIO::flush;
		2957	Coro::cede;
		2958	last unless IO::AIO::nreqs || BDB::nreqs;
		2959	warn "iterate...";
		2960	}
		2961
		2962	++$RELOAD;
		2963
1288	# cancel all extension coros	2964	warn "cancelling all extension coros";
1289	$_->cancel for values %EXT_CORO;	2965	$_->cancel for values %EXT_CORO;
1290	%EXT_CORO = ();	2966	%EXT_CORO = ();
1291		2967
1292	# unload all extensions	2968	warn "removing commands";
1293	for (@exts) {	2969	%COMMAND = ();
		2970
		2971	warn "removing ext/exti commands";
		2972	%EXTCMD = ();
		2973	%EXTICMD = ();
		2974
		2975	warn "unloading/nuking all extensions";
		2976	for my $pkg (@EXTS) {
1294	warn "unloading <$_>";	2977	warn "... unloading $pkg";
1295	unload_extension $_;	2978
		2979	if (my $cb = $pkg->can ("unload")) {
		2980	eval {
		2981	$cb->($pkg);
		2982	1
		2983	} or warn "$pkg unloaded, but with errors: $@";
1296	}	2984	}
1297		2985
		2986	warn "... nuking $pkg";
		2987	Symbol::delete_package $pkg;
		2988	}
		2989
1298	# unload all modules loaded from $LIBDIR	2990	warn "unloading all perl modules loaded from $LIBDIR";
1299	while (my ($k, $v) = each %INC) {	2991	while (my ($k, $v) = each %INC) {
1300	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2992	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1301		2993
1302	warn "removing <$k>";	2994	warn "... unloading $k";
1303	delete $INC{$k};	2995	delete $INC{$k};
1304		2996
1305	$k =~ s/\.pm$//;	2997	$k =~ s/\.pm$//;
1306	$k =~ s/\//::/g;	2998	$k =~ s/\//::/g;
1307		2999
…		…
1310	}	3002	}
1311		3003
1312	Symbol::delete_package $k;	3004	Symbol::delete_package $k;
1313	}	3005	}
1314		3006
1315	# sync database to disk
1316	cf::db_sync;
1317	IO::AIO::flush;
1318
1319	# get rid of safe::, as good as possible	3007	warn "getting rid of safe::, as good as possible";
1320	Symbol::delete_package "safe::$_"	3008	Symbol::delete_package "safe::$_"
1321	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	3009	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1322		3010
1323	# remove register_script_function callbacks
1324	# TODO
1325
1326	# unload cf.pm "a bit"	3011	warn "unloading cf.pm \"a bit\"";
1327	delete $INC{"cf.pm"};	3012	delete $INC{"cf.pm"};
		3013	delete $INC{"cf/pod.pm"};
1328		3014
1329	# don't, removes xs symbols, too,	3015	# don't, removes xs symbols, too,
1330	# and global variables created in xs	3016	# and global variables created in xs
1331	#Symbol::delete_package __PACKAGE__;	3017	#Symbol::delete_package __PACKAGE__;
1332		3018
1333	# reload cf.pm	3019	warn "unload completed, starting to reload now";
		3020
1334	warn "reloading cf.pm";	3021	warn "reloading cf.pm";
1335	require cf;	3022	require cf;
1336	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3023	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1337		3024
1338	# load config and database again	3025	warn "loading config and database again";
1339	cf::cfg_load;	3026	cf::cfg_load;
1340	cf::db_load;
1341		3027
1342	# load extensions
1343	warn "load extensions";	3028	warn "loading extensions";
1344	cf::load_extensions;	3029	cf::load_extensions;
1345		3030
1346	# reattach attachments to objects	3031	warn "reattaching attachments to objects/players";
1347	warn "reattach";	3032	_global_reattach; # objects, sockets
1348	_global_reattach;	3033	warn "reattaching attachments to maps";
		3034	reattach $_ for values %MAP;
		3035	warn "reattaching attachments to players";
		3036	reattach $_ for values %PLAYER;
		3037
		3038	warn "leaving sync_job";
		3039
		3040	1
		3041	} or do {
		3042	warn $@;
		3043	warn "error while reloading, exiting.";
		3044	exit 1;
1349	};	3045	};
1350	warn $@ if $@;
1351		3046
1352	warn "reloaded";	3047	warn "reloaded";
1353	};	3048	};
1354		3049
1355	sub perl_reload() {	3050	our $RELOAD_WATCHER; # used only during reload
1356	_perl_reload;
1357	}
1358		3051
1359	register "<global>", __PACKAGE__;	3052	sub reload_perl() {
		3053	# doing reload synchronously and two reloads happen back-to-back,
		3054	# coro crashes during coro_state_free->destroy here.
1360		3055
		3056	$RELOAD_WATCHER ||= Event->timer (
		3057	reentrant => 0,
		3058	after => 0,
		3059	data => WF_AUTOCANCEL,
		3060	cb => sub {
		3061	do_reload_perl;
		3062	undef $RELOAD_WATCHER;
		3063	},
		3064	);
		3065	}
		3066
1361	register_command "perl-reload" => sub {	3067	register_command "reload" => sub {
1362	my ($who, $arg) = @_;	3068	my ($who, $arg) = @_;
1363		3069
1364	if ($who->flag (FLAG_WIZ)) {	3070	if ($who->flag (FLAG_WIZ)) {
1365	$who->message ("reloading...");	3071	$who->message ("reloading server.");
1366	_perl_reload;	3072	async { reload_perl };
1367	}	3073	}
1368	};	3074	};
1369		3075
1370	unshift @INC, $LIBDIR;	3076	unshift @INC, $LIBDIR;
1371		3077
		3078	my $bug_warning = 0;
		3079
		3080	our @WAIT_FOR_TICK;
		3081	our @WAIT_FOR_TICK_BEGIN;
		3082
		3083	sub wait_for_tick {
		3084	return unless $TICK_WATCHER->is_active;
		3085	return if $Coro::current == $Coro::main;
		3086
		3087	my $signal = new Coro::Signal;
		3088	push @WAIT_FOR_TICK, $signal;
		3089	$signal->wait;
		3090	}
		3091
		3092	sub wait_for_tick_begin {
		3093	return unless $TICK_WATCHER->is_active;
		3094	return if $Coro::current == $Coro::main;
		3095
		3096	my $signal = new Coro::Signal;
		3097	push @WAIT_FOR_TICK_BEGIN, $signal;
		3098	$signal->wait;
		3099	}
		3100
		3101	my $min = 1e6;#d#
		3102	my $avg = 10;
1372	$TICK_WATCHER = Event->timer (	3103	$TICK_WATCHER = Event->timer (
1373	reentrant => 0,	3104	reentrant => 0,
		3105	parked => 1,
1374	prio => 0,	3106	prio => 0,
1375	at => $NEXT_TICK || $TICK,	3107	at => $NEXT_TICK || $TICK,
1376	data => WF_AUTOCANCEL,	3108	data => WF_AUTOCANCEL,
1377	cb => sub {	3109	cb => sub {
1378	unless ($FREEZE) {	3110	if ($Coro::current != $Coro::main) {
		3111	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3112	unless ++$bug_warning > 10;
		3113	return;
		3114	}
		3115
		3116	$NOW = $tick_start = Event::time;
		3117
1379	cf::server_tick; # one server iteration	3118	cf::server_tick; # one server iteration
1380	$RUNTIME += $TICK;	3119
		3120	0 && sync_job {#d#
		3121	for(1..10) {
		3122	my $t = Event::time;
		3123	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3124	or die;
		3125
		3126	$map->width (50);
		3127	$map->height (50);
		3128	$map->alloc;
		3129	$map->_load_objects ("/tmp/x.map", 1);
		3130	my $t = Event::time - $t;
		3131
		3132	#next unless $t < 0.0013;#d#
		3133	if ($t < $min) {
		3134	$min = $t;
		3135	}
		3136	$avg = $avg * 0.99 + $t * 0.01;
		3137	}
		3138	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3139	exit 0;
		3140	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1381	}	3141	};
1382		3142
		3143	$RUNTIME += $TICK;
1383	$NEXT_TICK += $TICK;	3144	$NEXT_TICK += $TICK;
1384		3145
		3146	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3147	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3148	Coro::async_pool {
		3149	write_runtime
		3150	or warn "ERROR: unable to write runtime file: $!";
		3151	};
		3152	}
		3153
		3154	# my $AFTER = Event::time;
		3155	# warn $AFTER - $NOW;#d#
		3156
		3157	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3158	$sig->send;
		3159	}
		3160	while (my $sig = shift @WAIT_FOR_TICK) {
		3161	$sig->send;
		3162	}
		3163
		3164	$NOW = Event::time;
		3165
1385	# if we are delayed by four ticks or more, skip them all	3166	# if we are delayed by four ticks or more, skip them all
1386	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3167	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1387		3168
1388	$TICK_WATCHER->at ($NEXT_TICK);	3169	$TICK_WATCHER->at ($NEXT_TICK);
1389	$TICK_WATCHER->start;	3170	$TICK_WATCHER->start;
		3171
		3172	$LOAD = ($NOW - $tick_start) / $TICK;
		3173	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3174
		3175	_post_tick;
		3176
		3177
1390	},	3178	},
1391	);	3179	);
1392		3180
		3181	{
		3182	BDB::max_poll_time $TICK * 0.1;
		3183	$BDB_POLL_WATCHER = Event->io (
		3184	reentrant => 0,
		3185	fd => BDB::poll_fileno,
		3186	poll => 'r',
		3187	prio => 0,
		3188	data => WF_AUTOCANCEL,
		3189	cb => \&BDB::poll_cb,
		3190	);
		3191	BDB::min_parallel 8;
		3192
		3193	BDB::set_sync_prepare {
		3194	my $status;
		3195	my $current = $Coro::current;
		3196	(
		3197	sub {
		3198	$status = $!;
		3199	$current->ready; undef $current;
		3200	},
		3201	sub {
		3202	Coro::schedule while defined $current;
		3203	$! = $status;
		3204	},
		3205	)
		3206	};
		3207
		3208	unless ($DB_ENV) {
		3209	$DB_ENV = BDB::db_env_create;
		3210
		3211	cf::sync_job {
		3212	eval {
		3213	BDB::db_env_open
		3214	$DB_ENV,
		3215	$BDBDIR,
		3216	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3217	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3218	0666;
		3219
		3220	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3221
		3222	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3223	$DB_ENV->set_lk_detect;
		3224	};
		3225
		3226	cf::cleanup "db_env_open(db): $@" if $@;
		3227	};
		3228	}
		3229	}
		3230
		3231	{
		3232	IO::AIO::min_parallel 8;
		3233
		3234	undef $Coro::AIO::WATCHER;
1393	IO::AIO::max_poll_time $TICK * 0.2;	3235	IO::AIO::max_poll_time $TICK * 0.1;
1394		3236	$AIO_POLL_WATCHER = Event->io (
1395	Event->io (fd => IO::AIO::poll_fileno,	3237	reentrant => 0,
1396	poll => 'r',
1397	prio => 5,
1398	data => WF_AUTOCANCEL,	3238	data => WF_AUTOCANCEL,
		3239	fd => IO::AIO::poll_fileno,
		3240	poll => 'r',
		3241	prio => 6,
1399	cb => \&IO::AIO::poll_cb);	3242	cb => \&IO::AIO::poll_cb,
		3243	);
		3244	}
1400		3245
1401	# we must not ever block the main coroutine	3246	my $_log_backtrace;
1402	$Coro::idle = sub {	3247
1403	#Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	3248	sub _log_backtrace {
1404	warn "FATAL: Coro::idle was called, major BUG\n";	3249	my ($msg, @addr) = @_;
1405	(Coro::unblock_sub {	3250
1406	Event::one_event;	3251	$msg =~ s/\n//;
1407	})->();	3252
1408	};	3253	# limit the # of concurrent backtraces
		3254	if ($_log_backtrace < 2) {
		3255	++$_log_backtrace;
		3256	async {
		3257	my @bt = fork_call {
		3258	@addr = map { sprintf "%x", $_ } @addr;
		3259	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3260	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3261	or die "addr2line: $!";
		3262
		3263	my @funcs;
		3264	my @res = <$fh>;
		3265	chomp for @res;
		3266	while (@res) {
		3267	my ($func, $line) = splice @res, 0, 2, ();
		3268	push @funcs, "[$func] $line";
		3269	}
		3270
		3271	@funcs
		3272	};
		3273
		3274	LOG llevInfo, "[ABT] $msg\n";
		3275	LOG llevInfo, "[ABT] $_\n" for @bt;
		3276	--$_log_backtrace;
		3277	};
		3278	} else {
		3279	LOG llevInfo, "[ABT] $msg\n";
		3280	LOG llevInfo, "[ABT] [suppressed]\n";
		3281	}
		3282	}
		3283
		3284	# load additional modules
		3285	use cf::pod;
		3286
		3287	END { cf::emergency_save }
1409		3288
1410	1	3289	1
1411		3290

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