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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.75 by root, Mon Oct 2 00:22:01 2006 UTC vs.
Revision 1.268 by root, Tue May 22 10:50:00 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
10	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
11	use Time::HiRes;	31	use Time::HiRes;
12	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
13	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
14		41
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
17		44
18	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		46
20	_init_vars;	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		48
22	our %COMMAND = ();	49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
23	our @EVENT;	58	our @EVENT;
24	our $LIBDIR = maps_directory "perl";
25		59
26	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
27	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
29		82
30	our %CFG;	83	our %CFG;
31		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
		115
32	#############################################################################	116	#############################################################################
33		117
34	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
35		119
36	=over 4	120	=over 4
37		121
38	=item $cf::LIBDIR	122	=item $cf::UPTIME
39		123
40	The perl library directory, where extensions and cf-specific modules can	124	The timestamp of the server start (so not actually an uptime).
41	be found. It will be added to C<@INC> automatically.	125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
42		143
43	=item $cf::TICK	144	=item $cf::TICK
44		145
45	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
46		157
47	=item %cf::CFG	158	=item %cf::CFG
48		159
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
50	from wherever your confdir points to.	161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
51		168
52	=back	169	=back
53		170
54	=cut	171	=cut
55		172
56	BEGIN {	173	BEGIN {
57	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
58	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
59	$msg .= "\n"	177	$msg .= "\n"
60	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
61		179
62	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
63	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
64	};	184	};
65	}	185	}
66		186
		187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
68		193
69	# we bless all objects into (empty) derived classes to force a method lookup	194	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	195	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	196	for my $pkg (qw(
		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
72	no strict 'refs';	203	no strict 'refs';
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	205	}
75		206
76	$Event::DIED = sub {	207	$Event::DIED = sub {
77	warn "error in event callback: @_";	208	warn "error in event callback: @_";
78	};	209	};
79		210
80	my %ext_pkg;
81	my @exts;
82	my @hook;
83	my %command;
84	my %extcmd;
85
86	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
87		212
88	=over 4	213	=over 4
89		214
90	=cut	215	=item dumpval $ref
91		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
93		239
94	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
95		241
96	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
97		243
98	=cut
99
100	sub from_json($) {
101	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
102	JSON::Syck::Load $_[0]
103	}
104
105	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
106		245
107	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
108		247
109	=cut	248	=item cf::lock_wait $string
110		249
111	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
113	JSON::Syck::Dump $_[0]	252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
		382	my $cb = shift;
		383
		384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		401	utime undef, undef, $fh;
		402	}
		403
		404	my $guard = cf::lock_acquire "write_runtime";
		405
		406	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		407	or return;
		408
		409	my $value = $cf::RUNTIME + 90 + 10;
		410	# 10 is the runtime save interval, for a monotonic clock
		411	# 60 allows for the watchdog to kill the server.
		412
		413	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		414	and return;
		415
		416	# always fsync - this file is important
		417	aio_fsync $fh
		418	and return;
		419
		420	# touch it again to show we are up-to-date
		421	utime undef, undef, $fh;
		422
		423	close $fh
		424	or return;
		425
		426	aio_rename "$runtime~", $runtime
		427	and return;
		428
		429	warn "runtime file written.\n";#d#
		430
		431	1
		432	}
		433
		434	=item cf::datalog type => key => value, ...
		435
		436	Log a datalog packet of the given type with the given key-value pairs.
		437
		438	=cut
		439
		440	sub datalog($@) {
		441	my ($type, %kv) = @_;
		442	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
114	}	443	}
115		444
116	=back	445	=back
117		446
118	=cut	447	=cut
119		448
120	#############################################################################	449	#############################################################################
121		450
122	=head2 EVENTS AND OBJECT ATTACHMENTS	451	=head2 ATTACHABLE OBJECTS
		452
		453	Many objects in crossfire are so-called attachable objects. That means you can
		454	attach callbacks/event handlers (a collection of which is called an "attachment")
		455	to it. All such attachable objects support the following methods.
		456
		457	In the following description, CLASS can be any of C<global>, C<object>
		458	C<player>, C<client> or C<map> (i.e. the attachable objects in
		459	crossfire+).
123		460
124	=over 4	461	=over 4
125		462
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	463	=item $attachable->attach ($attachment, key => $value...)
139		464
140	=item $map->detach ($attachment)	465	=item $attachable->detach ($attachment)
141		466
142	Attach/detach a pre-registered attachment to a map.	467	Attach/detach a pre-registered attachment to a specific object and give it
		468	the specified key/value pairs as arguments.
143		469
144	=item $bool = $object->attached ($name)	470	Example, attach a minesweeper attachment to the given object, making it a
		471	10x10 minesweeper game:
145		472
146	=item $bool = $player->attached ($name)	473	$obj->attach (minesweeper => width => 10, height => 10);
147		474
148	=item $bool = $map->attached ($name)	475	=item $bool = $attachable->attached ($name)
149		476
150	Checks wether the named attachment is currently attached to the object.	477	Checks wether the named attachment is currently attached to the object.
151		478
152	=item cf::attach_global ...	479	=item cf::CLASS->attach ...
153		480
154	Attach handlers for global events.	481	=item cf::CLASS->detach ...
155		482
156	This and all following C<attach_*>-functions expect any number of the	483	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	484	CLASS. See the next function for an explanation of its arguments.
		485
		486	You can attach to global events by using the C<cf::global> class.
		487
		488	Example, log all player logins:
		489
		490	cf::player->attach (
		491	on_login => sub {
		492	my ($pl) = @_;
		493	...
		494	},
		495	);
		496
		497	Example, attach to the jeweler skill:
		498
		499	cf::object->attach (
		500	type => cf::SKILL,
		501	subtype => cf::SK_JEWELER,
		502	on_use_skill => sub {
		503	my ($sk, $ob, $part, $dir, $msg) = @_;
		504	...
		505	},
		506	);
		507
		508	=item cf::CLASS::attachment $name, ...
		509
		510	Register an attachment by C<$name> through which attachable objects of the
		511	given CLASS can refer to this attachment.
		512
		513	Some classes such as crossfire maps and objects can specify attachments
		514	that are attached at load/instantiate time, thus the need for a name.
		515
		516	These calls expect any number of the following handler/hook descriptions:
158		517
159	=over 4	518	=over 4
160		519
161	=item prio => $number	520	=item prio => $number
162		521
…		…
164	by another C<prio> setting). Lower priority handlers get executed	523	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	524	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	525	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	526	unless you know what you are doing.
168		527
		528	=item type => $type
		529
		530	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		531	given type of objects only (the additional parameter C<subtype> can be
		532	used to further limit to the given subtype).
		533
169	=item on_I<event> => \&cb	534	=item on_I<event> => \&cb
170		535
171	Call the given code reference whenever the named event happens (event is	536	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	537	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	538	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	547	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	548	object/class are recognised.
184		549
185	=back	550	=back
186		551
187	=item cf::attach_to_type $object_type, $subtype, ...	552	Example, define an attachment called "sockpuppet" that calls the given
		553	event handler when a monster attacks:
188		554
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	555	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	556	on_skill_attack => sub {
191	type.	557	my ($self, $victim) = @_;
192		558	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	559	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	560	}
414	}
415		561
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	562	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		563
442	Just because you have a perl object does not mean that the corresponding	564	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	565	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	566	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	567	can be used to test for existence of the C object part without causing an
446	exception.	568	exception.
447		569
		570	=cut
		571
		572	# the following variables are defined in .xs and must not be re-created
		573	our @CB_GLOBAL = (); # registry for all global events
		574	our @CB_ATTACHABLE = (); # registry for all attachables
		575	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		576	our @CB_PLAYER = ();
		577	our @CB_CLIENT = ();
		578	our @CB_TYPE = (); # registry for type (cf-object class) based events
		579	our @CB_MAP = ();
		580
		581	my %attachment;
		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
		588
		589	sub _attach_cb($$$$) {
		590	my ($registry, $event, $prio, $cb) = @_;
		591
		592	use sort 'stable';
		593
		594	$cb = [$prio, $cb];
		595
		596	@{$registry->[$event]} = sort
		597	{ $a->[0] cmp $b->[0] }
		598	@{$registry->[$event] || []}, $cb;
		599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		603
		604	# attach handles attaching event callbacks
		605	# the only thing the caller has to do is pass the correct
		606	# registry (== where the callback attaches to).
		607	sub _attach {
		608	my ($registry, $klass, @arg) = @_;
		609
		610	my $object_type;
		611	my $prio = 0;
		612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
		619	while (@arg) {
		620	my $type = shift @arg;
		621
		622	if ($type eq "prio") {
		623	$prio = shift @arg;
		624
		625	} elsif ($type eq "type") {
		626	$object_type = shift @arg;
		627	$registry = $CB_TYPE[$object_type] ||= [];
		628
		629	} elsif ($type eq "subtype") {
		630	defined $object_type or Carp::croak "subtype specified without type";
		631	my $object_subtype = shift @arg;
		632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		633
		634	} elsif ($type eq "package") {
		635	my $pkg = shift @arg;
		636
		637	while (my ($name, $id) = each %cb_id) {
		638	if (my $cb = $pkg->can ($name)) {
		639	_attach_cb $registry, $id, $prio, $cb;
		640	}
		641	}
		642
		643	} elsif (exists $cb_id{$type}) {
		644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		645
		646	} elsif (ref $type) {
		647	warn "attaching objects not supported, ignoring.\n";
		648
		649	} else {
		650	shift @arg;
		651	warn "attach argument '$type' not supported, ignoring.\n";
		652	}
		653	}
		654	}
		655
		656	sub _object_attach {
		657	my ($obj, $name, %arg) = @_;
		658
		659	return if exists $obj->{_attachment}{$name};
		660
		661	if (my $attach = $attachment{$name}) {
		662	my $registry = $obj->registry;
		663
		664	for (@$attach) {
		665	my ($klass, @attach) = @$_;
		666	_attach $registry, $klass, @attach;
		667	}
		668
		669	$obj->{$name} = \%arg;
		670	} else {
		671	warn "object uses attachment '$name' that is not available, postponing.\n";
		672	}
		673
		674	$obj->{_attachment}{$name} = undef;
		675	}
		676
		677	sub cf::attachable::attach {
		678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	_recalc_want;
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	_recalc_want;
		697	};
		698
		699	sub cf::attachable::attached {
		700	my ($obj, $name) = @_;
		701
		702	exists $obj->{_attachment}{$name}
		703	}
		704
		705	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		706	eval "#line " . __LINE__ . " 'cf.pm'
		707	sub cf::\L$klass\E::_attach_registry {
		708	(\\\@CB_$klass, KLASS_$klass)
		709	}
		710
		711	sub cf::\L$klass\E::attachment {
		712	my \$name = shift;
		713
		714	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		715	}
		716	";
		717	die if $@;
		718	}
		719
		720	our $override;
		721	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		722
		723	sub override {
		724	$override = 1;
		725	@invoke_results = ();
		726	}
		727
		728	sub do_invoke {
		729	my $event = shift;
		730	my $callbacks = shift;
		731
		732	@invoke_results = ();
		733
		734	local $override;
		735
		736	for (@$callbacks) {
		737	eval { &{$_->[1]} };
		738
		739	if ($@) {
		740	warn "$@";
		741	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		742	override;
		743	}
		744
		745	return 1 if $override;
		746	}
		747
		748	0
		749	}
		750
		751	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		752
		753	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		754
		755	Generate an object-specific event with the given arguments.
		756
		757	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		758	removed in future versions), and there is no public API to access override
		759	results (if you must, access C<@cf::invoke_results> directly).
		760
448	=back	761	=back
449		762
450	=cut	763	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		764
456	#############################################################################	765	#############################################################################
457	# object support	766	# object support
458		767
459	sub instantiate {
460	my ($obj, $data) = @_;
461
462	$data = from_json $data;
463
464	for (@$data) {
465	my ($name, $args) = @$_;
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}
470
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	768	sub reattach {
		769	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	770	my ($obj) = @_;
		771
		772	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		773
474	my $registry = $obj->registry;	774	my $registry = $obj->registry;
475		775
476	@$registry = ();	776	@$registry = ();
477		777
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	778	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		779
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	780	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	781	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	782	for (@$attach) {
483	my ($klass, @attach) = @$_;	783	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	784	_attach $registry, $klass, @attach;
485	}	785	}
486	} else {	786	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	787	warn "object uses attachment '$name' that is not available, postponing.\n";
488	}	788	}
489	}	789	}
490	}	790	}
491		791
492	sub object_freezer_save {	792	cf::attachable->attach (
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}
521	}
522
523	sub object_thawer_load {
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	793	prio => -1000000,
		794	on_instantiate => sub {
		795	my ($obj, $data) = @_;
		796
		797	$data = from_json $data;
		798
		799	for (@$data) {
		800	my ($name, $args) = @$_;
		801
		802	$obj->attach ($name, %{$args || {} });
		803	}
		804	},
		805	on_reattach => \&reattach,
544	on_clone => sub {	806	on_clone => sub {
545	my ($src, $dst) = @_;	807	my ($src, $dst) = @_;
546		808
547	@{$dst->registry} = @{$src->registry};	809	@{$dst->registry} = @{$src->registry};
548		810
549	%$dst = %$src;	811	%$dst = %$src;
550		812
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	813	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	814	if exists $src->{_attachment};
553	},	815	},
554	;	816	);
		817
		818	sub object_freezer_save {
		819	my ($filename, $rdata, $objs) = @_;
		820
		821	sync_job {
		822	if (length $$rdata) {
		823	warn sprintf "saving %s (%d,%d)\n",
		824	$filename, length $$rdata, scalar @$objs;
		825
		826	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		827	chmod SAVE_MODE, $fh;
		828	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		829	aio_fsync $fh if $cf::USE_FSYNC;
		830	close $fh;
		831
		832	if (@$objs) {
		833	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		834	chmod SAVE_MODE, $fh;
		835	my $data = Storable::nfreeze { version => 1, objs => $objs };
		836	aio_write $fh, 0, (length $data), $data, 0;
		837	aio_fsync $fh if $cf::USE_FSYNC;
		838	close $fh;
		839	aio_rename "$filename.pst~", "$filename.pst";
		840	}
		841	} else {
		842	aio_unlink "$filename.pst";
		843	}
		844
		845	aio_rename "$filename~", $filename;
		846	} else {
		847	warn "FATAL: $filename~: $!\n";
		848	}
		849	} else {
		850	aio_unlink $filename;
		851	aio_unlink "$filename.pst";
		852	}
		853	}
		854	}
		855
		856	sub object_freezer_as_string {
		857	my ($rdata, $objs) = @_;
		858
		859	use Data::Dumper;
		860
		861	$$rdata . Dumper $objs
		862	}
		863
		864	sub object_thawer_load {
		865	my ($filename) = @_;
		866
		867	my ($data, $av);
		868
		869	(aio_load $filename, $data) >= 0
		870	or return;
		871
		872	unless (aio_stat "$filename.pst") {
		873	(aio_load "$filename.pst", $av) >= 0
		874	or return;
		875	$av = eval { (Storable::thaw $av)->{objs} };
		876	}
		877
		878	warn sprintf "loading %s (%d)\n",
		879	$filename, length $data, scalar @{$av || []};#d#
		880	return ($data, $av);
		881	}
555		882
556	#############################################################################	883	#############################################################################
557	# old plug-in events	884	# command handling &c
558		885
559	sub inject_event {	886	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		887
563	my $cb = $hook[$event_code]{$extension}	888	Register a callback for execution when the client sends the user command
564	or return;	889	$name.
565		890
566	&$cb	891	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		892
588	sub register_command {	893	sub register_command {
589	my ($name, $time, $cb) = @_;	894	my ($name, $cb) = @_;
590		895
591	my $caller = caller;	896	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	897	#warn "registering command '$name/$time' to '$caller'";
593		898
594	push @{ $command{$name} }, [$time, $cb, $caller];	899	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	900	}
		901
		902	=item cf::register_extcmd $name => \&callback($pl,$packet);
		903
		904	Register a callbackf ro execution when the client sends an extcmd packet.
		905
		906	If the callback returns something, it is sent back as if reply was being
		907	called.
		908
		909	=cut
597		910
598	sub register_extcmd {	911	sub register_extcmd {
599	my ($name, $cb) = @_;	912	my ($name, $cb) = @_;
600		913
601	my $caller = caller;	914	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	915	}
606		916
607	sub register {	917	cf::player->attach (
608	my ($base, $pkg) = @_;	918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
609		920
610	#TODO	921	my $cb = $COMMAND{$name}
611	}	922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
612		948
613	sub load_extension {	949	sub load_extension {
614	my ($path) = @_;	950	my ($path) = @_;
615		951
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
617	my $base = $1;	953	my $base = $1;
618	my $pkg = $1;	954	my $pkg = $1;
619	$pkg =~ s/[^[:word:]]/_/g;	955	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";	956	$pkg = "ext::$pkg";
621		957
622	warn "loading '$path' into '$pkg'\n";	958	warn "... loading '$path' into '$pkg'\n";
623		959
624	open my $fh, "<:utf8", $path	960	open my $fh, "<:utf8", $path
625	or die "$path: $!";	961	or die "$path: $!";
626		962
627	my $source =	963	my $source =
628	"package $pkg; use strict; use utf8;\n"	964	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"	965	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })	966	. (do { local $/; <$fh> })
631	. "\n};\n1";	967	. "\n};\n1";
632		968
633	eval $source	969	unless (eval $source) {
634	or die "$path: $@";	970	my $msg = $@ ? "$path: $@\n"
635		971	: "extension disabled.\n";
636	push @exts, $pkg;	972	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
637	$ext_pkg{$base} = $pkg;	973	warn $@;
638		974	warn "mandatory extension failed to load, exiting.\n";
639	# no strict 'refs';	975	exit 1;
640	# @{"$pkg\::ISA"} = ext::;	976	}
641		977	die $@;
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }	978	}
655		979
656	# remove commands	980	push @EXTS, $pkg;
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}
667	}
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}	981	}
683		982
684	sub load_extensions {	983	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {	984	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;	985	next unless -r $ext;
689	eval {	986	eval {
690	load_extension $ext;	987	load_extension $ext;
691	1	988	1
692	} or warn "$ext not loaded: $@";	989	} or warn "$ext not loaded: $@";
693	}	990	}
694	}	991	}
695		992
696	#############################################################################	993	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699		994
700	attach_to_players	995	=head2 CORE EXTENSIONS
701	on_extcmd => sub {	996
		997	Functions and methods that extend core crossfire objects.
		998
		999	=cut
		1000
		1001	package cf::player;
		1002
		1003	use Coro::AIO;
		1004
		1005	=head3 cf::player
		1006
		1007	=over 4
		1008
		1009	=item cf::player::find $login
		1010
		1011	Returns the given player object, loading it if necessary (might block).
		1012
		1013	=cut
		1014
		1015	sub playerdir($) {
		1016	"$PLAYERDIR/"
		1017	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1018	}
		1019
		1020	sub path($) {
		1021	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1022
		1023	(playerdir $login) . "/playerdata"
		1024	}
		1025
		1026	sub find_active($) {
		1027	$cf::PLAYER{$_[0]}
		1028	and $cf::PLAYER{$_[0]}->active
		1029	and $cf::PLAYER{$_[0]}
		1030	}
		1031
		1032	sub exists($) {
		1033	my ($login) = @_;
		1034
		1035	$cf::PLAYER{$login}
		1036	or cf::sync_job { !aio_stat path $login }
		1037	}
		1038
		1039	sub find($) {
		1040	return $cf::PLAYER{$_[0]} || do {
		1041	my $login = $_[0];
		1042
		1043	my $guard = cf::lock_acquire "user_find:$login";
		1044
		1045	$cf::PLAYER{$_[0]} || do {
		1046	# rename old playerfiles to new ones
		1047	#TODO: remove when no longer required
		1048	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1049	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1050	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1051	aio_unlink +(playerdir $login) . "/$login.pl";
		1052
		1053	my $pl = load_pl path $login
		1054	or return;
		1055	$cf::PLAYER{$login} = $pl
		1056	}
		1057	}
		1058	}
		1059
		1060	sub save($) {
702	my ($pl, $buf) = @_;	1061	my ($pl) = @_;
703		1062
704	my $msg = eval { from_json $buf };	1063	return if $pl->{deny_save};
705		1064
706	if (ref $msg) {	1065	my $path = path $pl;
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1066	my $guard = cf::lock_acquire "user_save:$path";
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1067
709	$pl->ext_reply ($msg->{msgid}, %reply);	1068	return if $pl->{deny_save};
710	}	1069
		1070	aio_mkdir playerdir $pl, 0770;
		1071	$pl->{last_save} = $cf::RUNTIME;
		1072
		1073	$pl->save_pl ($path);
		1074	Coro::cede;
		1075	}
		1076
		1077	sub new($) {
		1078	my ($login) = @_;
		1079
		1080	my $self = create;
		1081
		1082	$self->ob->name ($login);
		1083	$self->{deny_save} = 1;
		1084
		1085	$cf::PLAYER{$login} = $self;
		1086
		1087	$self
		1088	}
		1089
		1090	=item $pl->quit_character
		1091
		1092	Nukes the player without looking back. If logged in, the connection will
		1093	be destroyed. May block for a long time.
		1094
		1095	=cut
		1096
		1097	sub quit_character {
		1098	my ($pl) = @_;
		1099
		1100	my $name = $pl->ob->name;
		1101
		1102	$pl->{deny_save} = 1;
		1103	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1104
		1105	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1106	$pl->deactivate;
		1107	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1108	$pl->ns->destroy if $pl->ns;
		1109
		1110	my $path = playerdir $pl;
		1111	my $temp = "$path~$cf::RUNTIME~deleting~";
		1112	aio_rename $path, $temp;
		1113	delete $cf::PLAYER{$pl->ob->name};
		1114	$pl->destroy;
		1115
		1116	my $prefix = qr<^~\Q$name\E/>;
		1117
		1118	# nuke player maps
		1119	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1120
		1121	IO::AIO::aio_rmtree $temp;
		1122	}
		1123
		1124	=item $pl->kick
		1125
		1126	Kicks a player out of the game. This destroys the connection.
		1127
		1128	=cut
		1129
		1130	sub kick {
		1131	my ($pl, $kicker) = @_;
		1132
		1133	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1134	$pl->killer ("kicked");
		1135	$pl->ns->destroy;
		1136	}
		1137
		1138	=item cf::player::list_logins
		1139
		1140	Returns am arrayref of all valid playernames in the system, can take a
		1141	while and may block, so not sync_job-capable, ever.
		1142
		1143	=cut
		1144
		1145	sub list_logins {
		1146	my $dirs = aio_readdir $PLAYERDIR
		1147	or return [];
		1148
		1149	my @logins;
		1150
		1151	for my $login (@$dirs) {
		1152	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1153	aio_read $fh, 0, 512, my $buf, 0 or next;
		1154	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1155
		1156	utf8::decode $login;
		1157	push @logins, $login;
		1158	}
		1159
		1160	\@logins
		1161	}
		1162
		1163	=item $player->maps
		1164
		1165	Returns an arrayref of map paths that are private for this
		1166	player. May block.
		1167
		1168	=cut
		1169
		1170	sub maps($) {
		1171	my ($pl) = @_;
		1172
		1173	$pl = ref $pl ? $pl->ob->name : $pl;
		1174
		1175	my $files = aio_readdir playerdir $pl
		1176	or return;
		1177
		1178	my @paths;
		1179
		1180	for (@$files) {
		1181	utf8::decode $_;
		1182	next if /\.(?:pl|pst)$/;
		1183	next unless /^$PATH_SEP/o;
		1184
		1185	push @paths, cf::map::normalise "~$pl/$_";
		1186	}
		1187
		1188	\@paths
		1189	}
		1190
		1191	=item $player->ext_reply ($msgid, %msg)
		1192
		1193	Sends an ext reply to the player.
		1194
		1195	=cut
		1196
		1197	sub ext_reply($$%) {
		1198	my ($self, $id, %msg) = @_;
		1199
		1200	$msg{msgid} = $id;
		1201
		1202	$self->send ("ext " . cf::to_json \%msg);
		1203	}
		1204
		1205	=item $player->ext_event ($type, %msg)
		1206
		1207	Sends an ext event to the client.
		1208
		1209	=cut
		1210
		1211	sub ext_event($$%) {
		1212	my ($self, $type, %msg) = @_;
		1213
		1214	$self->ns->ext_event ($type, %msg);
		1215	}
		1216
		1217	=head3 cf::region
		1218
		1219	=over 4
		1220
		1221	=cut
		1222
		1223	package cf::region;
		1224
		1225	=item cf::region::find_by_path $path
		1226
		1227	Tries to decuce the probable region for a map knowing only its path.
		1228
		1229	=cut
		1230
		1231	sub find_by_path($) {
		1232	my ($path) = @_;
		1233
		1234	my ($match, $specificity);
		1235
		1236	for my $region (list) {
		1237	if ($region->match && $path =~ $region->match) {
		1238	($match, $specificity) = ($region, $region->specificity)
		1239	if $region->specificity > $specificity;
		1240	}
		1241	}
		1242
		1243	$match
		1244	}
		1245
		1246	=back
		1247
		1248	=head3 cf::map
		1249
		1250	=over 4
		1251
		1252	=cut
		1253
		1254	package cf::map;
		1255
		1256	use Fcntl;
		1257	use Coro::AIO;
		1258
		1259	use overload
		1260	'""' => \&as_string,
		1261	fallback => 1;
		1262
		1263	our $MAX_RESET = 3600;
		1264	our $DEFAULT_RESET = 3000;
		1265
		1266	sub generate_random_map {
		1267	my ($self, $rmp) = @_;
		1268	# mit "rum" bekleckern, nicht
		1269	$self->_create_random_map (
		1270	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1271	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1272	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1273	$rmp->{exit_on_final_map},
		1274	$rmp->{xsize}, $rmp->{ysize},
		1275	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1276	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1277	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1278	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1279	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1280	(cf::region::find $rmp->{region}), $rmp->{custom}
		1281	)
		1282	}
		1283
		1284	=item cf::map->register ($regex, $prio)
		1285
		1286	Register a handler for the map path matching the given regex at the
		1287	givne priority (higher is better, built-in handlers have priority 0, the
		1288	default).
		1289
		1290	=cut
		1291
		1292	sub register {
		1293	my (undef, $regex, $prio) = @_;
		1294	my $pkg = caller;
		1295
		1296	no strict;
		1297	push @{"$pkg\::ISA"}, __PACKAGE__;
		1298
		1299	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1300	}
		1301
		1302	# also paths starting with '/'
		1303	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1304
		1305	sub thawer_merge {
		1306	my ($self, $merge) = @_;
		1307
		1308	# we have to keep some variables in memory intact
		1309	local $self->{path};
		1310	local $self->{load_path};
		1311	local $self->{deny_save};
		1312	local $self->{deny_reset};
		1313
		1314	$self->SUPER::thawer_merge ($merge);
		1315	}
		1316
		1317	sub normalise {
		1318	my ($path, $base) = @_;
		1319
		1320	$path = "$path"; # make sure its a string
		1321
		1322	$path =~ s/\.map$//;
		1323
		1324	# map plan:
		1325	#
		1326	# /! non-realised random map exit (special hack!)
		1327	# {... are special paths that are not being touched
		1328	# ?xxx/... are special absolute paths
		1329	# ?random/... random maps
		1330	# /... normal maps
		1331	# ~user/... per-player map of a specific user
		1332
		1333	$path =~ s/$PATH_SEP/\//go;
		1334
		1335	# treat it as relative path if it starts with
		1336	# something that looks reasonable
		1337	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1338	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1339
		1340	$base =~ s{[^/]+/?$}{};
		1341	$path = "$base/$path";
		1342	}
		1343
		1344	for ($path) {
		1345	redo if s{//}{/};
		1346	redo if s{/\.?/}{/};
		1347	redo if s{/[^/]+/\.\./}{/};
		1348	}
		1349
		1350	$path
		1351	}
		1352
		1353	sub new_from_path {
		1354	my (undef, $path, $base) = @_;
		1355
		1356	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1357
		1358	$path = normalise $path, $base;
		1359
		1360	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1361	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1362	my $self = bless cf::map::new, $pkg;
		1363	$self->{path} = $path; $self->path ($path);
		1364	$self->init; # pass $1 etc.
		1365	return $self;
		1366	}
		1367	}
		1368
		1369	Carp::carp "unable to resolve path '$path' (base '$base').";
		1370	()
		1371	}
		1372
		1373	sub init {
		1374	my ($self) = @_;
		1375
		1376	$self
		1377	}
		1378
		1379	sub as_string {
		1380	my ($self) = @_;
		1381
		1382	"$self->{path}"
		1383	}
		1384
		1385	# the displayed name, this is a one way mapping
		1386	sub visible_name {
		1387	&as_string
		1388	}
		1389
		1390	# the original (read-only) location
		1391	sub load_path {
		1392	my ($self) = @_;
		1393
		1394	"$MAPDIR/$self->{path}.map"
		1395	}
		1396
		1397	# the temporary/swap location
		1398	sub save_path {
		1399	my ($self) = @_;
		1400
		1401	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1402	"$TMPDIR/$path.map"
		1403	}
		1404
		1405	# the unique path, undef == no special unique path
		1406	sub uniq_path {
		1407	my ($self) = @_;
		1408
		1409	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1410	"$UNIQUEDIR/$path"
		1411	}
		1412
		1413	# and all this just because we cannot iterate over
		1414	# all maps in C++...
		1415	sub change_all_map_light {
		1416	my ($change) = @_;
		1417
		1418	$_->change_map_light ($change)
		1419	for grep $_->outdoor, values %cf::MAP;
		1420	}
		1421
		1422	sub unlink_save {
		1423	my ($self) = @_;
		1424
		1425	utf8::encode (my $save = $self->save_path);
		1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1427	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1428	}
		1429
		1430	sub load_header_from($) {
		1431	my ($self, $path) = @_;
		1432
		1433	utf8::encode $path;
		1434	#aio_open $path, O_RDONLY, 0
		1435	# or return;
		1436
		1437	$self->_load_header ($path)
		1438	or return;
		1439
		1440	$self->{load_path} = $path;
		1441
		1442	1
		1443	}
		1444
		1445	sub load_header_orig {
		1446	my ($self) = @_;
		1447
		1448	$self->load_header_from ($self->load_path)
		1449	}
		1450
		1451	sub load_header_temp {
		1452	my ($self) = @_;
		1453
		1454	$self->load_header_from ($self->save_path)
		1455	}
		1456
		1457	sub prepare_temp {
		1458	my ($self) = @_;
		1459
		1460	$self->last_access ((delete $self->{last_access})
		1461	|| $cf::RUNTIME); #d#
		1462	# safety
		1463	$self->{instantiate_time} = $cf::RUNTIME
		1464	if $self->{instantiate_time} > $cf::RUNTIME;
		1465	}
		1466
		1467	sub prepare_orig {
		1468	my ($self) = @_;
		1469
		1470	$self->{load_original} = 1;
		1471	$self->{instantiate_time} = $cf::RUNTIME;
		1472	$self->last_access ($cf::RUNTIME);
		1473	$self->instantiate;
		1474	}
		1475
		1476	sub load_header {
		1477	my ($self) = @_;
		1478
		1479	if ($self->load_header_temp) {
		1480	$self->prepare_temp;
		1481	} else {
		1482	$self->load_header_orig
		1483	or return;
		1484	$self->prepare_orig;
		1485	}
		1486
		1487	$self->default_region (cf::region::find_by_path $self->{path})
		1488	unless $self->default_region;
		1489
		1490	1
		1491	}
		1492
		1493	sub find;
		1494	sub find {
		1495	my ($path, $origin) = @_;
		1496
		1497	$path = normalise $path, $origin && $origin->path;
		1498
		1499	cf::lock_wait "map_find:$path";
		1500
		1501	$cf::MAP{$path} || do {
		1502	my $guard = cf::lock_acquire "map_find:$path";
		1503	my $map = new_from_path cf::map $path
		1504	or return;
		1505
		1506	$map->{last_save} = $cf::RUNTIME;
		1507
		1508	$map->load_header
		1509	or return;
		1510
		1511	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1512	# doing this can freeze the server in a sync job, obviously
		1513	#$cf::WAIT_FOR_TICK->wait;
		1514	$map->reset;
		1515	undef $guard;
		1516	return find $path;
		1517	}
		1518
		1519	$cf::MAP{$path} = $map
		1520	}
		1521	}
		1522
		1523	sub pre_load { }
		1524	sub post_load { }
		1525
		1526	sub load {
		1527	my ($self) = @_;
		1528
		1529	local $self->{deny_reset} = 1; # loading can take a long time
		1530
		1531	my $path = $self->{path};
		1532
		1533	{
		1534	my $guard = cf::lock_acquire "map_load:$path";
		1535
		1536	return if $self->in_memory != cf::MAP_SWAPPED;
		1537
		1538	$self->in_memory (cf::MAP_LOADING);
		1539
		1540	$self->alloc;
		1541
		1542	$self->pre_load;
		1543	Coro::cede;
		1544
		1545	$self->_load_objects ($self->{load_path}, 1)
		1546	or return;
		1547
		1548	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1549	if delete $self->{load_original};
		1550
		1551	if (my $uniq = $self->uniq_path) {
		1552	utf8::encode $uniq;
		1553	if (aio_open $uniq, O_RDONLY, 0) {
		1554	$self->clear_unique_items;
		1555	$self->_load_objects ($uniq, 0);
711	}	1556	}
712	} else {
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
714	}	1557	}
715		1558
716	cf::override;	1559	Coro::cede;
		1560	# now do the right thing for maps
		1561	$self->link_multipart_objects;
		1562	$self->difficulty ($self->estimate_difficulty)
		1563	unless $self->difficulty;
		1564	Coro::cede;
		1565
		1566	unless ($self->{deny_activate}) {
		1567	$self->decay_objects;
		1568	$self->fix_auto_apply;
		1569	$self->update_buttons;
		1570	Coro::cede;
		1571	$self->set_darkness_map;
		1572	Coro::cede;
		1573	$self->activate;
		1574	}
		1575
		1576	$self->in_memory (cf::MAP_IN_MEMORY);
717	},	1577	}
718	;
719		1578
720	#############################################################################	1579	$self->post_load;
721	# load/save/clean perl data associated with a map	1580	}
722		1581
723	*cf::mapsupport::on_clean = sub {	1582	sub customise_for {
		1583	my ($self, $ob) = @_;
		1584
		1585	return find "~" . $ob->name . "/" . $self->{path}
		1586	if $self->per_player;
		1587
		1588	$self
		1589	}
		1590
		1591	# find and load all maps in the 3x3 area around a map
		1592	sub load_diag {
724	my ($map) = @_;	1593	my ($map) = @_;
725		1594
726	my $path = $map->tmpname;	1595	my @diag; # diagonal neighbours
727	defined $path or return;
728		1596
729	unlink "$path.pst";	1597	for (0 .. 3) {
730	};	1598	my $neigh = $map->tile_path ($_)
		1599	or next;
		1600	$neigh = find $neigh, $map
		1601	or next;
		1602	$neigh->load;
731		1603
732	attach_to_maps prio => -10000, package => cf::mapsupport::;	1604	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1605	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1606	}
733		1607
734	#############################################################################	1608	for (@diag) {
735	# load/save perl data associated with player->ob objects	1609	my $neigh = find @$_
736		1610	or next;
737	sub all_objects(@) {	1611	$neigh->load;
738	@_, map all_objects ($_->inv), @_	1612	}
739	}	1613	}
740		1614
741	# TODO: compatibility cruft, remove when no longer needed	1615	sub find_sync {
742	attach_to_players	1616	my ($path, $origin) = @_;
743	on_load => sub {
744	my ($pl, $path) = @_;
745		1617
746	for my $o (all_objects $pl->ob) {	1618	cf::sync_job { find $path, $origin }
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1619	}
748	$o->set_ob_key_value ("_perl_data");
749		1620
750	%$o = %{ Storable::thaw pack "H*", $value };	1621	sub do_load_sync {
		1622	my ($map) = @_;
		1623
		1624	cf::sync_job { $map->load };
		1625	}
		1626
		1627	our %MAP_PREFETCH;
		1628	our $MAP_PREFETCHER = undef;
		1629
		1630	sub find_async {
		1631	my ($path, $origin) = @_;
		1632
		1633	$path = normalise $path, $origin && $origin->{path};
		1634
		1635	if (my $map = $cf::MAP{$path}) {
		1636	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1637	}
		1638
		1639	undef $MAP_PREFETCH{$path};
		1640	$MAP_PREFETCHER ||= cf::async {
		1641	while (%MAP_PREFETCH) {
		1642	for my $path (keys %MAP_PREFETCH) {
		1643	my $map = find $path
		1644	or next;
		1645	$map->load;
		1646
		1647	delete $MAP_PREFETCH{$path};
751	}	1648	}
752	}	1649	}
		1650	undef $MAP_PREFETCHER;
		1651	};
		1652	$MAP_PREFETCHER->prio (6);
		1653
		1654	()
		1655	}
		1656
		1657	sub save {
		1658	my ($self) = @_;
		1659
		1660	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1661
		1662	$self->{last_save} = $cf::RUNTIME;
		1663
		1664	return unless $self->dirty;
		1665
		1666	my $save = $self->save_path; utf8::encode $save;
		1667	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1668
		1669	$self->{load_path} = $save;
		1670
		1671	return if $self->{deny_save};
		1672
		1673	local $self->{last_access} = $self->last_access;#d#
		1674
		1675	cf::async {
		1676	$_->contr->save for $self->players;
		1677	};
		1678
		1679	if ($uniq) {
		1680	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1681	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1682	} else {
		1683	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
753	},	1684	}
754	;	1685	}
755		1686
756	#############################################################################	1687	sub swap_out {
		1688	my ($self) = @_;
757		1689
758	=head2 CORE EXTENSIONS	1690	# save first because save cedes
		1691	$self->save;
759		1692
760	Functions and methods that extend core crossfire objects.	1693	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1694
		1695	return if $self->players;
		1696	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1697	return if $self->{deny_save};
		1698
		1699	$self->clear;
		1700	$self->in_memory (cf::MAP_SWAPPED);
		1701	}
		1702
		1703	sub reset_at {
		1704	my ($self) = @_;
		1705
		1706	# TODO: safety, remove and allow resettable per-player maps
		1707	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1708	return 1e99 if $self->{deny_reset};
		1709
		1710	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1711	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1712
		1713	$time + $to
		1714	}
		1715
		1716	sub should_reset {
		1717	my ($self) = @_;
		1718
		1719	$self->reset_at <= $cf::RUNTIME
		1720	}
		1721
		1722	sub reset {
		1723	my ($self) = @_;
		1724
		1725	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1726
		1727	return if $self->players;
		1728	return if $self->isa ("ext::map_per_player");#d#
		1729
		1730	warn "resetting map ", $self->path;#d#
		1731
		1732	$self->in_memory (cf::MAP_SWAPPED);
		1733
		1734	# need to save uniques path
		1735	unless ($self->{deny_save}) {
		1736	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1737
		1738	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1739	if $uniq;
		1740	}
		1741
		1742	delete $cf::MAP{$self->path};
		1743
		1744	$self->clear;
		1745
		1746	$_->clear_links_to ($self) for values %cf::MAP;
		1747
		1748	$self->unlink_save;
		1749	$self->destroy;
		1750	}
		1751
		1752	my $nuke_counter = "aaaa";
		1753
		1754	sub nuke {
		1755	my ($self) = @_;
		1756
		1757	delete $cf::MAP{$self->path};
		1758
		1759	$self->unlink_save;
		1760
		1761	bless $self, "cf::map";
		1762	delete $self->{deny_reset};
		1763	$self->{deny_save} = 1;
		1764	$self->reset_timeout (1);
		1765	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1766
		1767	$cf::MAP{$self->path} = $self;
		1768
		1769	$self->reset; # polite request, might not happen
		1770	}
		1771
		1772	=item cf::map::unique_maps
		1773
		1774	Returns an arrayref of paths of all shared maps that have
		1775	instantiated unique items. May block.
		1776
		1777	=cut
		1778
		1779	sub unique_maps() {
		1780	my $files = aio_readdir $UNIQUEDIR
		1781	or return;
		1782
		1783	my @paths;
		1784
		1785	for (@$files) {
		1786	utf8::decode $_;
		1787	next if /\.pst$/;
		1788	next unless /^$PATH_SEP/o;
		1789
		1790	push @paths, cf::map::normalise $_;
		1791	}
		1792
		1793	\@paths
		1794	}
		1795
		1796	package cf;
		1797
		1798	=back
		1799
		1800	=head3 cf::object
		1801
		1802	=cut
		1803
		1804	package cf::object;
761		1805
762	=over 4	1806	=over 4
763		1807
764	=item cf::player::exists $login	1808	=item $ob->inv_recursive
765		1809
766	Returns true when the given account exists.	1810	Returns the inventory of the object _and_ their inventories, recursively.
767		1811
768	=cut	1812	=cut
769		1813
770	sub cf::player::exists($) {	1814	sub inv_recursive_;
771	cf::player::find $_[0]	1815	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1816	map { $_, inv_recursive_ $_->inv } @_
773	}	1817	}
774		1818
		1819	sub inv_recursive {
		1820	inv_recursive_ inv $_[0]
		1821	}
		1822
		1823	package cf;
		1824
		1825	=back
		1826
		1827	=head3 cf::object::player
		1828
		1829	=over 4
		1830
775	=item $object->reply ($npc, $msg[, $flags])	1831	=item $player_object->reply ($npc, $msg[, $flags])
776		1832
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1833	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	1834	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	1835	dialogue with the given NPC character.
780		1836
781	=cut	1837	=cut
782		1838
783	# rough implementation of a future "reply" method that works	1839	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	1840	# with dialog boxes.
		1841	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	1842	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	1843	my ($self, $npc, $msg, $flags) = @_;
787		1844
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1845	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		1846
…		…
793	$msg = $npc->name . " says: $msg" if $npc;	1850	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	1851	$self->message ($msg, $flags);
795	}	1852	}
796	}	1853	}
797		1854
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	1855	=item $player_object->may ("access")
799		1856
800	Sends an ext reply to the player.	1857	Returns wether the given player is authorized to access resource "access"
		1858	(e.g. "command_wizcast").
801		1859
802	=cut	1860	=cut
803		1861
804	sub cf::player::ext_reply($$$%) {	1862	sub cf::object::player::may {
		1863	my ($self, $access) = @_;
		1864
		1865	$self->flag (cf::FLAG_WIZ) ||
		1866	(ref $cf::CFG{"may_$access"}
		1867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1868	: $cf::CFG{"may_$access"})
		1869	}
		1870
		1871	=item $player_object->enter_link
		1872
		1873	Freezes the player and moves him/her to a special map (C<{link}>).
		1874
		1875	The player should be reasonably safe there for short amounts of time. You
		1876	I<MUST> call C<leave_link> as soon as possible, though.
		1877
		1878	Will never block.
		1879
		1880	=item $player_object->leave_link ($map, $x, $y)
		1881
		1882	Moves the player out of the special C<{link}> map onto the specified
		1883	map. If the map is not valid (or omitted), the player will be moved back
		1884	to the location he/she was before the call to C<enter_link>, or, if that
		1885	fails, to the emergency map position.
		1886
		1887	Might block.
		1888
		1889	=cut
		1890
		1891	sub link_map {
		1892	unless ($LINK_MAP) {
		1893	$LINK_MAP = cf::map::find "{link}"
		1894	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1895	$LINK_MAP->load;
		1896	}
		1897
		1898	$LINK_MAP
		1899	}
		1900
		1901	sub cf::object::player::enter_link {
		1902	my ($self) = @_;
		1903
		1904	$self->deactivate_recursive;
		1905
		1906	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1907
		1908	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1909	if $self->map;
		1910
		1911	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1912	}
		1913
		1914	sub cf::object::player::leave_link {
		1915	my ($self, $map, $x, $y) = @_;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	cf::player->attach (
		1949	on_logout => sub {
		1950	my ($pl) = @_;
		1951
		1952	# abort map switching before logout
		1953	if ($pl->ob->{_link_pos}) {
		1954	cf::sync_job {
		1955	$pl->ob->leave_link
		1956	};
		1957	}
		1958	},
		1959	on_login => sub {
		1960	my ($pl) = @_;
		1961
		1962	# try to abort aborted map switching on player login :)
		1963	# should happen only on crashes
		1964	if ($pl->ob->{_link_pos}) {
		1965	$pl->ob->enter_link;
		1966	(async {
		1967	$pl->ob->reply (undef,
		1968	"There was an internal problem at your last logout, "
		1969	. "the server will try to bring you to your intended destination in a second.",
		1970	cf::NDI_RED);
		1971	# we need this sleep as the login has a concurrent enter_exit running
		1972	# and this sleep increases chances of the player not ending up in scorn
		1973	Coro::Timer::sleep 1;
		1974	$pl->ob->leave_link;
		1975	})->prio (2);
		1976	}
		1977	},
		1978	);
		1979
		1980	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1981
		1982	Moves the player to the given map-path and coordinates by first freezing
		1983	her, loading and preparing them map, calling the provided $check callback
		1984	that has to return the map if sucecssful, and then unfreezes the player on
		1985	the new (success) or old (failed) map position.
		1986
		1987	=cut
		1988
		1989	sub cf::object::player::goto {
		1990	my ($self, $path, $x, $y, $check) = @_;
		1991
		1992	#d# #TODO#
		1993	if ($check && !ref $check) {
		1994	warn Carp::longmess "goto called with non-ref check argument";#d#
		1995	undef $check;
		1996	}
		1997
		1998	$self->enter_link;
		1999
		2000	(async {
		2001	my $map = eval {
		2002	my $map = cf::map::find $path;
		2003
		2004	if ($map) {
		2005	$map = $map->customise_for ($self);
		2006	$map = $check->($map) if $check && $map;
		2007	} else {
		2008	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2009	}
		2010
		2011	$map
		2012	};
		2013
		2014	if ($@) {
		2015	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2016	LOG llevError | logBacktrace, Carp::longmess $@;
		2017	}
		2018
		2019	$self->leave_link ($map, $x, $y);
		2020	})->prio (1);
		2021	}
		2022
		2023	=item $player_object->enter_exit ($exit_object)
		2024
		2025	=cut
		2026
		2027	sub parse_random_map_params {
		2028	my ($spec) = @_;
		2029
		2030	my $rmp = { # defaults
		2031	xsize => (cf::rndm 15, 40),
		2032	ysize => (cf::rndm 15, 40),
		2033	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2034	#layout => string,
		2035	};
		2036
		2037	for (split /\n/, $spec) {
		2038	my ($k, $v) = split /\s+/, $_, 2;
		2039
		2040	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2041	}
		2042
		2043	$rmp
		2044	}
		2045
		2046	sub prepare_random_map {
		2047	my ($exit) = @_;
		2048
		2049	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2050
		2051	# all this does is basically replace the /! path by
		2052	# a new random map path (?random/...) with a seed
		2053	# that depends on the exit object
		2054
		2055	my $rmp = parse_random_map_params $exit->msg;
		2056
		2057	if ($exit->map) {
		2058	$rmp->{region} = $exit->region->name;
		2059	$rmp->{origin_map} = $exit->map->path;
		2060	$rmp->{origin_x} = $exit->x;
		2061	$rmp->{origin_y} = $exit->y;
		2062	}
		2063
		2064	$rmp->{random_seed} ||= $exit->random_seed;
		2065
		2066	my $data = cf::to_json $rmp;
		2067	my $md5 = Digest::MD5::md5_hex $data;
		2068	my $meta = "$RANDOMDIR/$md5.meta";
		2069
		2070	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2071	aio_write $fh, 0, (length $data), $data, 0;
		2072	undef $fh;
		2073	aio_rename "$meta~", $meta;
		2074
		2075	$exit->slaying ("?random/$md5");
		2076	$exit->msg (undef);
		2077	}
		2078	}
		2079
		2080	sub cf::object::player::enter_exit {
		2081	my ($self, $exit) = @_;
		2082
		2083	return unless $self->type == cf::PLAYER;
		2084
		2085	if ($exit->slaying eq "/!") {
		2086	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2087	# the problem is that $exit might not survive long enough
		2088	# so it needs to be done right now, right here
		2089	cf::sync_job { prepare_random_map $exit };
		2090	}
		2091
		2092	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2093	my $hp = $exit->stats->hp;
		2094	my $sp = $exit->stats->sp;
		2095
		2096	$self->enter_link;
		2097
		2098	(async {
		2099	$self->deactivate_recursive; # just to be sure
		2100	unless (eval {
		2101	$self->goto ($slaying, $hp, $sp);
		2102
		2103	1;
		2104	}) {
		2105	$self->message ("Something went wrong deep within the crossfire server. "
		2106	. "I'll try to bring you back to the map you were before. "
		2107	. "Please report this to the dungeon master!",
		2108	cf::NDI_UNIQUE | cf::NDI_RED);
		2109
		2110	warn "ERROR in enter_exit: $@";
		2111	$self->leave_link;
		2112	}
		2113	})->prio (1);
		2114	}
		2115
		2116	=head3 cf::client
		2117
		2118	=over 4
		2119
		2120	=item $client->send_drawinfo ($text, $flags)
		2121
		2122	Sends a drawinfo packet to the client. Circumvents output buffering so
		2123	should not be used under normal circumstances.
		2124
		2125	=cut
		2126
		2127	sub cf::client::send_drawinfo {
		2128	my ($self, $text, $flags) = @_;
		2129
		2130	utf8::encode $text;
		2131	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2132	}
		2133
		2134	=item $client->ext_event ($type, %msg)
		2135
		2136	Sends an exti event to the client.
		2137
		2138	=cut
		2139
		2140	sub cf::client::ext_event($$%) {
805	my ($self, $id, %msg) = @_;	2141	my ($self, $type, %msg) = @_;
806		2142
807	$msg{msgid} = $id;	2143	$msg{msgtype} = "event_$type";
808
809	$self->send ("ext " . to_json \%msg);	2144	$self->send_packet ("ext " . cf::to_json \%msg);
810	}	2145	}
		2146
		2147	=item $success = $client->query ($flags, "text", \&cb)
		2148
		2149	Queues a query to the client, calling the given callback with
		2150	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2151	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2152
		2153	Queries can fail, so check the return code. Or don't, as queries will become
		2154	reliable at some point in the future.
		2155
		2156	=cut
		2157
		2158	sub cf::client::query {
		2159	my ($self, $flags, $text, $cb) = @_;
		2160
		2161	return unless $self->state == ST_PLAYING
		2162	|| $self->state == ST_SETUP
		2163	|| $self->state == ST_CUSTOM;
		2164
		2165	$self->state (ST_CUSTOM);
		2166
		2167	utf8::encode $text;
		2168	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2169
		2170	$self->send_packet ($self->{query_queue}[0][0])
		2171	if @{ $self->{query_queue} } == 1;
		2172	}
		2173
		2174	cf::client->attach (
		2175	on_reply => sub {
		2176	my ($ns, $msg) = @_;
		2177
		2178	# this weird shuffling is so that direct followup queries
		2179	# get handled first
		2180	my $queue = delete $ns->{query_queue}
		2181	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2182
		2183	(shift @$queue)->[1]->($msg);
		2184	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2185
		2186	push @{ $ns->{query_queue} }, @$queue;
		2187
		2188	if (@{ $ns->{query_queue} } == @$queue) {
		2189	if (@$queue) {
		2190	$ns->send_packet ($ns->{query_queue}[0][0]);
		2191	} else {
		2192	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2193	}
		2194	}
		2195	},
		2196	);
		2197
		2198	=item $client->async (\&cb)
		2199
		2200	Create a new coroutine, running the specified callback. The coroutine will
		2201	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2202	or loss of connection).
		2203
		2204	=cut
		2205
		2206	sub cf::client::async {
		2207	my ($self, $cb) = @_;
		2208
		2209	my $coro = &Coro::async ($cb);
		2210
		2211	$coro->on_destroy (sub {
		2212	delete $self->{_coro}{$coro+0};
		2213	});
		2214
		2215	$self->{_coro}{$coro+0} = $coro;
		2216
		2217	$coro
		2218	}
		2219
		2220	cf::client->attach (
		2221	on_destroy => sub {
		2222	my ($ns) = @_;
		2223
		2224	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2225	},
		2226	);
811		2227
812	=back	2228	=back
813		2229
814	=cut
815
816	#############################################################################
817		2230
818	=head2 SAFE SCRIPTING	2231	=head2 SAFE SCRIPTING
819		2232
820	Functions that provide a safe environment to compile and execute	2233	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	2234	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	2235	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	2236	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	2237	functions and methods that can be called is greatly reduced.
825		2238
826	=cut	2239	=cut
827		2240
828	our $safe = new Safe "safe";	2241	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	2242	our $safe_hole = new Safe::Hole;
…		…
834		2247
835	# here we export the classes and methods available to script code	2248	# here we export the classes and methods available to script code
836		2249
837	=pod	2250	=pod
838		2251
839	The following fucntions and emthods are available within a safe environment:	2252	The following functions and methods are available within a safe environment:
840		2253
841	cf::object contr pay_amount pay_player	2254	cf::object contr pay_amount pay_player map
842	cf::object::player player	2255	cf::object::player player
843	cf::player peaceful	2256	cf::player peaceful
		2257	cf::map trigger
844		2258
845	=cut	2259	=cut
846		2260
847	for (	2261	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	2262	["cf::object" => qw(contr pay_amount pay_player map)],
849	["cf::object::player" => qw(player)],	2263	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	2264	["cf::player" => qw(peaceful)],
		2265	["cf::map" => qw(trigger)],
851	) {	2266	) {
852	no strict 'refs';	2267	no strict 'refs';
853	my ($pkg, @funs) = @$_;	2268	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2269	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	2270	for @funs;
…		…
927	#############################################################################	2342	#############################################################################
928		2343
929	=head2 EXTENSION DATABASE SUPPORT	2344	=head2 EXTENSION DATABASE SUPPORT
930		2345
931	Crossfire maintains a very simple database for extension use. It can	2346	Crossfire maintains a very simple database for extension use. It can
932	currently store anything that can be serialised using Storable, which	2347	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
933	excludes objects.	2348	convert to/from binary).
934		2349
935	The parameter C<$family> should best start with the name of the extension	2350	The parameter C<$family> should best start with the name of the extension
936	using it, it should be unique.	2351	using it, it should be unique.
937		2352
938	=over 4	2353	=over 4
939		2354
940	=item $hashref = cf::db_get $family
941
942	Return a hashref for use by the extension C<$family>, which can be
943	modified. After modifications, you have to call C<cf::db_dirty> or
944	C<cf::db_sync>.
945
946	=item $value = cf::db_get $family => $key	2355	=item $value = cf::db_get $family => $key
947		2356
948	Returns a single value from the database	2357	Returns a single value from the database.
949
950	=item cf::db_put $family => $hashref
951
952	Stores the given family hashref into the database. Updates are delayed, if
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.
954		2358
955	=item cf::db_put $family => $key => $value	2359	=item cf::db_put $family => $key => $value
956		2360
957	Stores the given C<$value> in the family hash. Updates are delayed, if you	2361	Stores the given C<$value> in the family.
958	want the data to be synced to disk immediately, use C<cf::db_sync>.
959		2362
960	=item cf::db_dirty
961
962	Marks the database as dirty, to be updated at a later time.
963
964	=item cf::db_sync
965
966	Immediately write the database to disk I<if it is dirty>.
967
968	=cut	2363	=cut
969		2364
970	{	2365	our $DB;
971	my $db;
972	my $path = cf::localdir . "/database.pst";
973		2366
974	sub db_load() {	2367	sub db_init {
975	warn "loading database $path\n";#d# remove later	2368	unless ($DB) {
976	$db = stat $path ? Storable::retrieve $path : { };	2369	$DB = BDB::db_create $DB_ENV;
977	}
978		2370
979	my $pid;	2371	cf::sync_job {
		2372	eval {
		2373	$DB->set_flags (BDB::CHKSUM);
980		2374
981	sub db_save() {	2375	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
982	warn "saving database $path\n";#d# remove later	2376	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
983	waitpid $pid, 0 if $pid;	2377	cf::cleanup "db_open(db): $!" if $!;
984	if (0 == ($pid = fork)) {	2378	};
985	$db->{_meta}{version} = 1;	2379	cf::cleanup "db_open(db): $@" if $@;
986	Storable::nstore $db, "$path~";
987	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;
989	}	2380	};
990	}
991
992	my $dirty;
993
994	sub db_sync() {
995	db_save if $dirty;
996	undef $dirty;
997	}
998
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1000	db_sync;
1001	});	2381	}
		2382	}
1002		2383
1003	sub db_dirty() {
1004	$dirty = 1;
1005	$idle->start;
1006	}
1007
1008	sub db_get($;$) {	2384	sub db_get($$) {
1009	@_ >= 2	2385	my $key = "$_[0]/$_[1]";
1010	? $db->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })
1012	}
1013		2386
		2387	cf::sync_job {
		2388	BDB::db_get $DB, undef, $key, my $data;
		2389
		2390	$! ? ()
		2391	: $data
		2392	}
		2393	}
		2394
1014	sub db_put($$;$) {	2395	sub db_put($$$) {
1015	if (@_ >= 3) {	2396	BDB::dbreq_pri 4;
1016	$db->{$_[0]}{$_[1]} = $_[2];	2397	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1017	} else {	2398	}
1018	$db->{$_[0]} = $_[1];
1019	}
1020	db_dirty;
1021	}
1022		2399
1023	attach_global	2400	=item cf::cache $id => [$paths...], $processversion => $process
1024	prio => 10000,	2401
1025	on_cleanup => sub {	2402	Generic caching function that returns the value of the resource $id,
1026	db_sync;	2403	caching and regenerating as required.
		2404
		2405	This function can block.
		2406
		2407	=cut
		2408
		2409	sub cache {
		2410	my ($id, $src, $processversion, $process) = @_;
		2411
		2412	my $meta =
		2413	join "\x00",
		2414	$processversion,
		2415	map {
		2416	aio_stat $_
		2417	and Carp::croak "$_: $!";
		2418
		2419	($_, (stat _)[7,9])
		2420	} @$src;
		2421
		2422	my $dbmeta = db_get cache => "$id/meta";
		2423	if ($dbmeta ne $meta) {
		2424	# changed, we may need to process
		2425
		2426	my @data;
		2427	my $md5;
		2428
		2429	for (0 .. $#$src) {
		2430	0 <= aio_load $src->[$_], $data[$_]
		2431	or Carp::croak "$src->[$_]: $!";
1027	},	2432	}
		2433
		2434	# if processing is expensive, check
		2435	# checksum first
		2436	if (1) {
		2437	$md5 =
		2438	join "\x00",
		2439	$processversion,
		2440	map {
		2441	Coro::cede;
		2442	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2443	} 0.. $#$src;
		2444
		2445
		2446	my $dbmd5 = db_get cache => "$id/md5";
		2447	if ($dbmd5 eq $md5) {
		2448	db_put cache => "$id/meta", $meta;
		2449
		2450	return db_get cache => "$id/data";
		2451	}
		2452	}
		2453
		2454	my $t1 = Time::HiRes::time;
		2455	my $data = $process->(\@data);
		2456	my $t2 = Time::HiRes::time;
		2457
		2458	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2459
		2460	db_put cache => "$id/data", $data;
		2461	db_put cache => "$id/md5" , $md5;
		2462	db_put cache => "$id/meta", $meta;
		2463
		2464	return $data;
1028	;	2465	}
		2466
		2467	db_get cache => "$id/data"
1029	}	2468	}
		2469
		2470	=item fork_call { }, $args
		2471
		2472	Executes the given code block with the given arguments in a seperate
		2473	process, returning the results. Everything must be serialisable with
		2474	Coro::Storable. May, of course, block. Note that the executed sub may
		2475	never block itself or use any form of Event handling.
		2476
		2477	=cut
		2478
		2479	sub fork_call(&@) {
		2480	my ($cb, @args) = @_;
		2481
		2482	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2483	# or die "socketpair: $!";
		2484	pipe my $fh1, my $fh2
		2485	or die "pipe: $!";
		2486
		2487	if (my $pid = fork) {
		2488	close $fh2;
		2489
		2490	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2491	$res = Coro::Storable::thaw $res;
		2492
		2493	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2494
		2495	die $$res unless "ARRAY" eq ref $res;
		2496
		2497	return wantarray ? @$res : $res->[-1];
		2498	} else {
		2499	reset_signals;
		2500	local $SIG{__WARN__};
		2501	local $SIG{__DIE__};
		2502	eval {
		2503	close $fh1;
		2504
		2505	my @res = eval { $cb->(@args) };
		2506	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2507	};
		2508
		2509	warn $@ if $@;
		2510	_exit 0;
		2511	}
		2512	}
		2513
		2514
1030		2515
1031	#############################################################################	2516	#############################################################################
1032	# the server's main()	2517	# the server's init and main functions
		2518
		2519	sub load_facedata($) {
		2520	my ($path) = @_;
		2521
		2522	warn "loading facedata from $path\n";
		2523
		2524	my $facedata;
		2525	0 < aio_load $path, $facedata
		2526	or die "$path: $!";
		2527
		2528	$facedata = Coro::Storable::thaw $facedata;
		2529
		2530	$facedata->{version} == 2
		2531	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2532
		2533	{
		2534	my $faces = $facedata->{faceinfo};
		2535
		2536	while (my ($face, $info) = each %$faces) {
		2537	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2538	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2539	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2540	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2541	Coro::cede;
		2542	}
		2543
		2544	while (my ($face, $info) = each %$faces) {
		2545	next unless $info->{smooth};
		2546	my $idx = cf::face::find $face
		2547	or next;
		2548	if (my $smooth = cf::face::find $info->{smooth}) {
		2549	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2550	} else {
		2551	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2552	}
		2553	Coro::cede;
		2554	}
		2555	}
		2556
		2557	{
		2558	my $anims = $facedata->{animinfo};
		2559
		2560	while (my ($anim, $info) = each %$anims) {
		2561	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2562	Coro::cede;
		2563	}
		2564
		2565	cf::anim::invalidate_all; # d'oh
		2566	}
		2567
		2568	1
		2569	}
		2570
		2571	sub reload_regions {
		2572	load_resource_file "$MAPDIR/regions"
		2573	or die "unable to load regions file\n";
		2574	}
		2575
		2576	sub reload_facedata {
		2577	load_facedata "$DATADIR/facedata"
		2578	or die "unable to load facedata\n";
		2579	}
		2580
		2581	sub reload_archetypes {
		2582	load_resource_file "$DATADIR/archetypes"
		2583	or die "unable to load archetypes\n";
		2584	}
		2585
		2586	sub reload_treasures {
		2587	load_resource_file "$DATADIR/treasures"
		2588	or die "unable to load treasurelists\n";
		2589	}
		2590
		2591	sub reload_resources {
		2592	warn "reloading resource files...\n";
		2593
		2594	reload_regions;
		2595	reload_facedata;
		2596	reload_archetypes;
		2597	reload_treasures;
		2598
		2599	warn "finished reloading resource files\n";
		2600	}
		2601
		2602	sub init {
		2603	reload_resources;
		2604	}
1033		2605
1034	sub cfg_load {	2606	sub cfg_load {
1035	open my $fh, "<:utf8", cf::confdir . "/config"	2607	open my $fh, "<:utf8", "$CONFDIR/config"
1036	or return;	2608	or return;
1037		2609
1038	local $/;	2610	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;	2611	*CFG = YAML::Syck::Load <$fh>;
		2612
		2613	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2614
		2615	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2616	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2617
		2618	if (exists $CFG{mlockall}) {
		2619	eval {
		2620	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2621	and die "WARNING: m(un)lockall failed: $!\n";
		2622	};
		2623	warn $@ if $@;
		2624	}
1040	}	2625	}
1041		2626
1042	sub main {	2627	sub main {
		2628	# we must not ever block the main coroutine
		2629	local $Coro::idle = sub {
		2630	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2631	(async {
		2632	Event::one_event;
		2633	})->prio (Coro::PRIO_MAX);
		2634	};
		2635
1043	cfg_load;	2636	cfg_load;
1044	db_load;	2637	db_init;
1045	load_extensions;	2638	load_extensions;
		2639
		2640	$TICK_WATCHER->start;
1046	Event::loop;	2641	Event::loop;
1047	}	2642	}
1048		2643
1049	#############################################################################	2644	#############################################################################
1050	# initialisation	2645	# initialisation and cleanup
1051		2646
1052	sub _perl_reload(&) {	2647	# install some emergency cleanup handlers
		2648	BEGIN {
		2649	for my $signal (qw(INT HUP TERM)) {
		2650	Event->signal (
		2651	reentrant => 0,
		2652	data => WF_AUTOCANCEL,
		2653	signal => $signal,
		2654	prio => 0,
		2655	cb => sub {
		2656	cf::cleanup "SIG$signal";
		2657	},
		2658	);
		2659	}
		2660	}
		2661
		2662	sub emergency_save() {
		2663	my $freeze_guard = cf::freeze_mainloop;
		2664
		2665	warn "enter emergency perl save\n";
		2666
		2667	cf::sync_job {
		2668	# use a peculiar iteration method to avoid tripping on perl
		2669	# refcount bugs in for. also avoids problems with players
		2670	# and maps saved/destroyed asynchronously.
		2671	warn "begin emergency player save\n";
		2672	for my $login (keys %cf::PLAYER) {
		2673	my $pl = $cf::PLAYER{$login} or next;
		2674	$pl->valid or next;
		2675	$pl->save;
		2676	}
		2677	warn "end emergency player save\n";
		2678
		2679	warn "begin emergency map save\n";
		2680	for my $path (keys %cf::MAP) {
		2681	my $map = $cf::MAP{$path} or next;
		2682	$map->valid or next;
		2683	$map->save;
		2684	}
		2685	warn "end emergency map save\n";
		2686
		2687	warn "begin emergency database checkpoint\n";
		2688	BDB::db_env_txn_checkpoint $DB_ENV;
		2689	warn "end emergency database checkpoint\n";
		2690	};
		2691
		2692	warn "leave emergency perl save\n";
		2693	}
		2694
		2695	sub post_cleanup {
1053	my ($msg) = @_;	2696	my ($make_core) = @_;
1054		2697
1055	$msg->("reloading...");	2698	warn Carp::longmess "post_cleanup backtrace"
		2699	if $make_core;
		2700	}
1056		2701
1057	eval {	2702	sub do_reload_perl() {
1058	# cancel all watchers	2703	# can/must only be called in main
		2704	if ($Coro::current != $Coro::main) {
		2705	warn "can only reload from main coroutine";
		2706	return;
		2707	}
		2708
		2709	warn "reloading...";
		2710
		2711	warn "entering sync_job";
		2712
		2713	cf::sync_job {
		2714	cf::write_runtime; # external watchdog should not bark
		2715	cf::emergency_save;
		2716	cf::write_runtime; # external watchdog should not bark
		2717
		2718	warn "syncing database to disk";
		2719	BDB::db_env_txn_checkpoint $DB_ENV;
		2720
		2721	# if anything goes wrong in here, we should simply crash as we already saved
		2722
		2723	warn "cancelling all WF_AUTOCANCEL watchers";
1059	$_->cancel for Event::all_watchers;	2724	for (Event::all_watchers) {
		2725	$_->cancel if $_->data & WF_AUTOCANCEL;
		2726	}
1060		2727
1061	# unload all extensions	2728	warn "flushing outstanding aio requests";
1062	for (@exts) {	2729	for (;;) {
1063	$msg->("unloading <$_>");	2730	BDB::flush;
1064	unload_extension $_;	2731	IO::AIO::flush;
		2732	Coro::cede;
		2733	last unless IO::AIO::nreqs || BDB::nreqs;
		2734	warn "iterate...";
		2735	}
		2736
		2737	++$RELOAD;
		2738
		2739	warn "cancelling all extension coros";
		2740	$_->cancel for values %EXT_CORO;
		2741	%EXT_CORO = ();
		2742
		2743	warn "removing commands";
		2744	%COMMAND = ();
		2745
		2746	warn "removing ext commands";
		2747	%EXTCMD = ();
		2748
		2749	warn "unloading/nuking all extensions";
		2750	for my $pkg (@EXTS) {
		2751	warn "... unloading $pkg";
		2752
		2753	if (my $cb = $pkg->can ("unload")) {
		2754	eval {
		2755	$cb->($pkg);
		2756	1
		2757	} or warn "$pkg unloaded, but with errors: $@";
1065	}	2758	}
1066		2759
		2760	warn "... nuking $pkg";
		2761	Symbol::delete_package $pkg;
		2762	}
		2763
1067	# unload all modules loaded from $LIBDIR	2764	warn "unloading all perl modules loaded from $LIBDIR";
1068	while (my ($k, $v) = each %INC) {	2765	while (my ($k, $v) = each %INC) {
1069	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2766	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1070		2767
1071	$msg->("removing <$k>");	2768	warn "... unloading $k";
1072	delete $INC{$k};	2769	delete $INC{$k};
1073		2770
1074	$k =~ s/\.pm$//;	2771	$k =~ s/\.pm$//;
1075	$k =~ s/\//::/g;	2772	$k =~ s/\//::/g;
1076		2773
…		…
1079	}	2776	}
1080		2777
1081	Symbol::delete_package $k;	2778	Symbol::delete_package $k;
1082	}	2779	}
1083		2780
1084	# sync database to disk
1085	cf::db_sync;
1086
1087	# get rid of safe::, as good as possible	2781	warn "getting rid of safe::, as good as possible";
1088	Symbol::delete_package "safe::$_"	2782	Symbol::delete_package "safe::$_"
1089	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2783	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1090		2784
1091	# remove register_script_function callbacks
1092	# TODO
1093
1094	# unload cf.pm "a bit"	2785	warn "unloading cf.pm \"a bit\"";
1095	delete $INC{"cf.pm"};	2786	delete $INC{"cf.pm"};
		2787	delete $INC{"cf/pod.pm"};
1096		2788
1097	# don't, removes xs symbols, too,	2789	# don't, removes xs symbols, too,
1098	# and global variables created in xs	2790	# and global variables created in xs
1099	#Symbol::delete_package __PACKAGE__;	2791	#Symbol::delete_package __PACKAGE__;
1100		2792
1101	# reload cf.pm	2793	warn "unload completed, starting to reload now";
		2794
1102	$msg->("reloading cf.pm");	2795	warn "reloading cf.pm";
1103	require cf;	2796	require cf;
		2797	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1104		2798
1105	# load config and database again	2799	warn "loading config and database again";
1106	cf::cfg_load;	2800	cf::cfg_load;
1107	cf::db_load;
1108		2801
1109	# load extensions	2802	warn "loading extensions";
1110	$msg->("load extensions");
1111	cf::load_extensions;	2803	cf::load_extensions;
1112		2804
1113	# reattach attachments to objects	2805	warn "reattaching attachments to objects/players";
1114	$msg->("reattach");	2806	_global_reattach; # objects, sockets
1115	_global_reattach;	2807	warn "reattaching attachments to maps";
		2808	reattach $_ for values %MAP;
		2809	warn "reattaching attachments to players";
		2810	reattach $_ for values %PLAYER;
		2811
		2812	warn "leaving sync_job";
		2813
		2814	1
		2815	} or do {
		2816	warn $@;
		2817	warn "error while reloading, exiting.";
		2818	exit 1;
1116	};	2819	};
1117	$msg->($@) if $@;
1118		2820
1119	$msg->("reloaded");	2821	warn "reloaded";
1120	};	2822	};
1121		2823
1122	sub perl_reload() {	2824	our $RELOAD_WATCHER; # used only during reload
1123	_perl_reload {	2825
1124	warn $_[0];	2826	sub reload_perl() {
1125	print "$_[0]\n";	2827	# doing reload synchronously and two reloads happen back-to-back,
		2828	# coro crashes during coro_state_free->destroy here.
		2829
		2830	$RELOAD_WATCHER ||= Event->timer (
		2831	reentrant => 0,
		2832	after => 0,
		2833	data => WF_AUTOCANCEL,
		2834	cb => sub {
		2835	do_reload_perl;
		2836	undef $RELOAD_WATCHER;
		2837	},
1126	};	2838	);
1127	}	2839	}
1128		2840
1129	register_command "perl-reload", 0, sub {	2841	register_command "reload" => sub {
1130	my ($who, $arg) = @_;	2842	my ($who, $arg) = @_;
1131		2843
1132	if ($who->flag (FLAG_WIZ)) {	2844	if ($who->flag (FLAG_WIZ)) {
1133	_perl_reload {	2845	$who->message ("reloading server.");
1134	warn $_[0];	2846	async { reload_perl };
1135	$who->message ($_[0]);	2847	}
		2848	};
		2849
		2850	unshift @INC, $LIBDIR;
		2851
		2852	my $bug_warning = 0;
		2853
		2854	our @WAIT_FOR_TICK;
		2855	our @WAIT_FOR_TICK_BEGIN;
		2856
		2857	sub wait_for_tick {
		2858	return unless $TICK_WATCHER->is_active;
		2859	return if $Coro::current == $Coro::main;
		2860
		2861	my $signal = new Coro::Signal;
		2862	push @WAIT_FOR_TICK, $signal;
		2863	$signal->wait;
		2864	}
		2865
		2866	sub wait_for_tick_begin {
		2867	return unless $TICK_WATCHER->is_active;
		2868	return if $Coro::current == $Coro::main;
		2869
		2870	my $signal = new Coro::Signal;
		2871	push @WAIT_FOR_TICK_BEGIN, $signal;
		2872	$signal->wait;
		2873	}
		2874
		2875	my $min = 1e6;#d#
		2876	my $avg = 10;
		2877	$TICK_WATCHER = Event->timer (
		2878	reentrant => 0,
		2879	parked => 1,
		2880	prio => 0,
		2881	at => $NEXT_TICK || $TICK,
		2882	data => WF_AUTOCANCEL,
		2883	cb => sub {
		2884	if ($Coro::current != $Coro::main) {
		2885	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2886	unless ++$bug_warning > 10;
		2887	return;
		2888	}
		2889
		2890	$NOW = $tick_start = Event::time;
		2891
		2892	cf::server_tick; # one server iteration
		2893
		2894	0 && sync_job {#d#
		2895	for(1..10) {
		2896	my $t = Event::time;
		2897	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2898	or die;
		2899
		2900	$map->width (50);
		2901	$map->height (50);
		2902	$map->alloc;
		2903	$map->_load_objects ("/tmp/x.map", 1);
		2904	my $t = Event::time - $t;
		2905
		2906	#next unless $t < 0.0013;#d#
		2907	if ($t < $min) {
		2908	$min = $t;
		2909	}
		2910	$avg = $avg * 0.99 + $t * 0.01;
		2911	}
		2912	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2913	exit 0;
		2914	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1136	};	2915	};
1137	}
1138	};
1139		2916
1140	register "<global>", __PACKAGE__;	2917	$RUNTIME += $TICK;
1141
1142	unshift @INC, $LIBDIR;
1143
1144	$TICK_WATCHER = Event->timer (
1145	prio => 1,
1146	at => $NEXT_TICK || 1,
1147	cb => sub {
1148	cf::server_tick; # one server iteration
1149
1150	my $NOW = Event::time;
1151	$NEXT_TICK += $TICK;	2918	$NEXT_TICK += $TICK;
1152		2919
		2920	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2921	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2922	Coro::async_pool {
		2923	write_runtime
		2924	or warn "ERROR: unable to write runtime file: $!";
		2925	};
		2926	}
		2927
		2928	# my $AFTER = Event::time;
		2929	# warn $AFTER - $NOW;#d#
		2930
		2931	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2932	$sig->send;
		2933	}
		2934	while (my $sig = shift @WAIT_FOR_TICK) {
		2935	$sig->send;
		2936	}
		2937
		2938	$NOW = Event::time;
		2939
1153	# if we are delayed by four ticks, skip them all	2940	# if we are delayed by four ticks or more, skip them all
1154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2941	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1155		2942
1156	$TICK_WATCHER->at ($NEXT_TICK);	2943	$TICK_WATCHER->at ($NEXT_TICK);
1157	$TICK_WATCHER->start;	2944	$TICK_WATCHER->start;
		2945
		2946	$LOAD = ($NOW - $tick_start) / $TICK;
		2947	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2948
		2949	_post_tick;
		2950
		2951
1158	},	2952	},
1159	);	2953	);
1160		2954
		2955	{
		2956	BDB::max_poll_time $TICK * 0.1;
		2957	$BDB_POLL_WATCHER = Event->io (
		2958	reentrant => 0,
		2959	fd => BDB::poll_fileno,
		2960	poll => 'r',
		2961	prio => 0,
		2962	data => WF_AUTOCANCEL,
		2963	cb => \&BDB::poll_cb,
		2964	);
		2965	BDB::min_parallel 8;
		2966
		2967	BDB::set_sync_prepare {
		2968	my $status;
		2969	my $current = $Coro::current;
		2970	(
		2971	sub {
		2972	$status = $!;
		2973	$current->ready; undef $current;
		2974	},
		2975	sub {
		2976	Coro::schedule while defined $current;
		2977	$! = $status;
		2978	},
		2979	)
		2980	};
		2981
		2982	unless ($DB_ENV) {
		2983	$DB_ENV = BDB::db_env_create;
		2984
		2985	cf::sync_job {
		2986	eval {
		2987	BDB::db_env_open
		2988	$DB_ENV,
		2989	$BDBDIR,
		2990	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2991	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2992	0666;
		2993
		2994	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2995
		2996	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2997	$DB_ENV->set_lk_detect;
		2998	};
		2999
		3000	cf::cleanup "db_env_open(db): $@" if $@;
		3001	};
		3002	}
		3003	}
		3004
		3005	{
		3006	IO::AIO::min_parallel 8;
		3007
		3008	undef $Coro::AIO::WATCHER;
		3009	IO::AIO::max_poll_time $TICK * 0.1;
		3010	$AIO_POLL_WATCHER = Event->io (
		3011	reentrant => 0,
		3012	data => WF_AUTOCANCEL,
		3013	fd => IO::AIO::poll_fileno,
		3014	poll => 'r',
		3015	prio => 6,
		3016	cb => \&IO::AIO::poll_cb,
		3017	);
		3018	}
		3019
		3020	my $_log_backtrace;
		3021
		3022	sub _log_backtrace {
		3023	my ($msg, @addr) = @_;
		3024
		3025	$msg =~ s/\n//;
		3026
		3027	# limit the # of concurrent backtraces
		3028	if ($_log_backtrace < 2) {
		3029	++$_log_backtrace;
		3030	async {
		3031	my @bt = fork_call {
		3032	@addr = map { sprintf "%x", $_ } @addr;
		3033	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3034	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3035	or die "addr2line: $!";
		3036
		3037	my @funcs;
		3038	my @res = <$fh>;
		3039	chomp for @res;
		3040	while (@res) {
		3041	my ($func, $line) = splice @res, 0, 2, ();
		3042	push @funcs, "[$func] $line";
		3043	}
		3044
		3045	@funcs
		3046	};
		3047
		3048	LOG llevInfo, "[ABT] $msg\n";
		3049	LOG llevInfo, "[ABT] $_\n" for @bt;
		3050	--$_log_backtrace;
		3051	};
		3052	} else {
		3053	LOG llevInfo, "[ABT] $msg\n";
		3054	LOG llevInfo, "[ABT] [suppressed]\n";
		3055	}
		3056	}
		3057
		3058	# load additional modules
		3059	use cf::pod;
		3060
		3061	END { cf::emergency_save }
		3062
1161	1	3063	1
1162		3064

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