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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.270 by root, Sat May 26 15:44:06 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;
		29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
10	use Time::HiRes;	31	use Time::HiRes;
11	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
12	$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
13		41
14	use strict;	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
15		44
16	_reload_1;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		48
18	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
19	our @EVENT;	58	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		59
24	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(!)
25	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	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;
		82
		83	our %CFG;
		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
		116	#############################################################################
		117
		118	=head2 GLOBAL VARIABLES
		119
		120	=over 4
		121
		122	=item $cf::UPTIME
		123
		124	The timestamp of the server start (so not actually an uptime).
		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.
		143
		144	=item $cf::TICK
		145
		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.
		157
		158	=item %cf::CFG
		159
		160	Configuration for the server, loaded from C</etc/crossfire/config>, or
		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.
		168
		169	=back
		170
		171	=cut
27		172
28	BEGIN {	173	BEGIN {
29	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
31	$msg .= "\n"	177	$msg .= "\n"
32	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
33		179
34	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
36	};	184	};
37	}	185	}
38		186
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		193
75	# 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
76	# within the Safe compartment.	195	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	196	for my $pkg (qw(
		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
78	no strict 'refs';	203	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	205	}
81		206
82	$Event::DIED = sub {	207	$Event::DIED = sub {
83	warn "error in event callback: @_";	208	warn "error in event callback: @_";
84	};	209	};
85		210
86	my %ext_pkg;	211	=head2 UTILITY FUNCTIONS
87	my @exts;	212
88	my @hook;	213	=over 4
89	my %command;	214
90	my %extcmd;	215	=item dumpval $ref
		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
		238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		239
		240	=item $ref = cf::from_json $json
		241
		242	Converts a JSON string into the corresponding perl data structure.
		243
		244	=item $json = cf::to_json $ref
		245
		246	Converts a perl data structure into its JSON representation.
		247
		248	=item cf::lock_wait $string
		249
		250	Wait until the given lock is available. See cf::lock_acquire.
		251
		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 => $type });
		443	}
		444
		445	=back
		446
		447	=cut
91		448
92	#############################################################################	449	#############################################################################
93	# utility functions
94		450
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	451	=head2 ATTACHABLE OBJECTS
96		452
97	sub from_json($) {	453	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	454	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	455	to it. All such attachable objects support the following methods.
100	}
101		456
102	sub to_json($) {	457	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	458	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	459	crossfire+).
105	}
106		460
107	#############################################################################	461	=over 4
108	# "new" plug-in system
109		462
110	=item $object->attach ($attachment, key => $value...)
111
112	=item $object->detach ($attachment)
113
114	Attach/detach a pre-registered attachment to an object.
115
116	=item $player->attach ($attachment, key => $value...)
117
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	463	=item $attachable->attach ($attachment, key => $value...)
123		464
124	=item $map->detach ($attachment)	465	=item $attachable->detach ($attachment)
125		466
126	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.
127		469
128	=item cf::attach_global ...	470	Example, attach a minesweeper attachment to the given object, making it a
		471	10x10 minesweeper game:
129		472
130	Attach handlers for global events.	473	$obj->attach (minesweeper => width => 10, height => 10);
131		474
132	This and all following C<attach_*>-functions expect any number of the	475	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	476
		477	Checks wether the named attachment is currently attached to the object.
		478
		479	=item cf::CLASS->attach ...
		480
		481	=item cf::CLASS->detach ...
		482
		483	Define an anonymous attachment and attach it to all objects of the given
		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:
134		517
135	=over 4	518	=over 4
136		519
137	=item prio => $number	520	=item prio => $number
138		521
…		…
140	by another C<prio> setting). Lower priority handlers get executed	523	by another C<prio> setting). Lower priority handlers get executed
141	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
142	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
143	unless you know what you are doing.	526	unless you know what you are doing.
144		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
145	=item on_I<event> => \&cb	534	=item on_I<event> => \&cb
146		535
147	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
148	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
149	handlers are recognised generally depends on the type of object these	538	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	547	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	548	object/class are recognised.
160		549
161	=back	550	=back
162		551
163	=item cf::attach_to_type $object_type, $subtype, ...	552	Example, define an attachment called "sockpuppet" that calls the given
		553	event handler when a monster attacks:
164		554
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	555	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	556	on_skill_attack => sub {
167	type.	557	my ($self, $victim) = @_;
		558	...
		559	}
		560	}
168		561
169	=item cf::attach_to_objects ...	562	=item $attachable->valid
170		563
171	Attach handlers to all objects. Do not use this except for debugging or	564	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	565	C-level object still exists. If you try to access an object that has no
173	the game.	566	valid C counterpart anymore you get an exception at runtime. This method
174		567	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	568	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		569
193	=cut	570	=cut
194		571
195	# the following variables are defined in .xs and must not be re-created	572	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	573	our @CB_GLOBAL = (); # registry for all global events
		574	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	575	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	576	our @CB_PLAYER = ();
		577	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	578	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	579	our @CB_MAP = ();
201		580
202	my %attachment;	581	my %attachment;
203		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
		588
204	sub _attach_cb($\%$$$) {	589	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	590	my ($registry, $event, $prio, $cb) = @_;
206		591
207	use sort 'stable';	592	use sort 'stable';
208		593
209	$cb = [$prio, $cb];	594	$cb = [$prio, $cb];
210		595
211	@{$registry->[$event]} = sort	596	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	597	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	598	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		603
218	# attach handles attaching event callbacks	604	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	605	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	606	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	607	sub _attach {
222	my ($registry, $klass, @arg) = @_;	608	my ($registry, $klass, @arg) = @_;
223		609
		610	my $object_type;
224	my $prio = 0;	611	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	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	}
232		618
233	while (@arg) {	619	while (@arg) {
234	my $type = shift @arg;	620	my $type = shift @arg;
235		621
236	if ($type eq "prio") {	622	if ($type eq "prio") {
237	$prio = shift @arg;	623	$prio = shift @arg;
238		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
239	} elsif ($type eq "package") {	634	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	635	my $pkg = shift @arg;
241		636
242	while (my ($name, $id) = each %cb_id) {	637	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	638	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	639	_attach_cb $registry, $id, $prio, $cb;
245	}	640	}
246	}	641	}
247		642
248	} elsif (exists $cb_id{$type}) {	643	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		645
251	} elsif (ref $type) {	646	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	647	warn "attaching objects not supported, ignoring.\n";
253		648
254	} else {	649	} else {
255	shift @arg;	650	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	651	warn "attach argument '$type' not supported, ignoring.\n";
257	}	652	}
258	}	653	}
259
260	\%undo
261	}	654	}
262		655
263	sub _attach_attachment {	656	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	657	my ($obj, $name, %arg) = @_;
265		658
266	my $res;	659	return if exists $obj->{_attachment}{$name};
267		660
268	if (my $attach = $attachment{$name}) {	661	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	662	my $registry = $obj->registry;
270		663
271	for (@$attach) {	664	for (@$attach) {
272	my ($klass, @attach) = @$_;	665	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	666	_attach $registry, $klass, @attach;
274	}	667	}
275		668
276	$obj->{$name} = \%arg;	669	$obj->{$name} = \%arg;
277	} else {	670	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	671	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	672	}
280		673
281	$obj->{_attachment}{$name} = undef;	674	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	675	}
286		676
287	sub cf::object::attach {	677	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	_recalc_want;
		684	};
289		685
290	_attach_attachment $obj, $name, %arg;	686	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	687	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	688	my ($obj, $name) = @_;
307	die;#d#	689
308	}	690	if (ref $obj) {
309	sub cf::player::detach {	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 {
310	my ($obj, $name) = @_;	700	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		701
318	sub attach_global {	702	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	703	}
321		704
322	sub attach_to_type {	705	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	706	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	707	sub cf::\L$klass\E::_attach_registry {
		708	(\\\@CB_$klass, KLASS_$klass)
		709	}
325		710
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	711	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	712	my \$name = shift;
343		713
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	714	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		715	}
		716	";
		717	die if $@;
351	}	718	}
352		719
353	our $override;	720	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	721	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		722
…		…
369	for (@$callbacks) {	736	for (@$callbacks) {
370	eval { &{$_->[1]} };	737	eval { &{$_->[1]} };
371		738
372	if ($@) {	739	if ($@) {
373	warn "$@";	740	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	741	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	742	override;
376	}	743	}
377		744
378	return 1 if $override;	745	return 1 if $override;
379	}	746	}
380		747
381	0	748	0
382	}	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
		761	=back
		762
		763	=cut
383		764
384	#############################################################################	765	#############################################################################
385	# object support	766	# object support
386		767
387	sub instantiate {
388	my ($obj, $data) = @_;
389
390	$data = from_json $data;
391
392	for (@$data) {
393	my ($name, $args) = @$_;
394
395	$obj->attach ($name, %{$args || {} });
396	}
397	}
398
399	# basically do the same as instantiate, without calling instantiate
400	sub reattach {	768	sub reattach {
		769	# basically do the same as instantiate, without calling instantiate
401	my ($obj) = @_;	770	my ($obj) = @_;
		771
		772	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		773
402	my $registry = $obj->registry;	774	my $registry = $obj->registry;
403		775
404	@$registry = ();	776	@$registry = ();
405		777
406	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	778	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
407		779
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	780	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	781	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	782	for (@$attach) {
411	my ($klass, @attach) = @$_;	783	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	784	_attach $registry, $klass, @attach;
413	}	785	}
414	} else {	786	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	787	warn "object uses attachment '$name' that is not available, postponing.\n";
416	}	788	}
417	}	789	}
418	}	790	}
419		791
420	sub object_freezer_save {	792	cf::attachable->attach (
421	my ($filename, $objs) = @_;
422
423	if (@$objs) {
424	open my $fh, ">:raw", "$filename.pst~";
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";
429	} else {
430	unlink "$filename.pst";
431	}
432
433	chmod SAVE_MODE, "$filename~";
434	rename "$filename~", $filename;
435	}
436
437	sub object_thawer_load {
438	my ($filename) = @_;
439
440	open my $fh, "<:raw:perlio", "$filename.pst"
441	or return;
442
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }
444	}
445
446	attach_to_objects
447	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,
448	on_clone => sub {	806	on_clone => sub {
449	my ($src, $dst) = @_;	807	my ($src, $dst) = @_;
450		808
451	@{$dst->registry} = @{$src->registry};	809	@{$dst->registry} = @{$src->registry};
452		810
453	%$dst = %$src;	811	%$dst = %$src;
454		812
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	813	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	814	if exists $src->{_attachment};
457	},	815	},
458	;	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	}
459		882
460	#############################################################################	883	#############################################################################
461	# old plug-in events	884	# command handling &c
462		885
463	sub inject_event {	886	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		887
467	my $cb = $hook[$event_code]{$extension}	888	Register a callback for execution when the client sends the user command
468	or return;	889	$name.
469		890
470	&$cb	891	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		892
492	sub register_command {	893	sub register_command {
493	my ($name, $time, $cb) = @_;	894	my ($name, $cb) = @_;
494		895
495	my $caller = caller;	896	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	897	#warn "registering command '$name/$time' to '$caller'";
497		898
498	push @{ $command{$name} }, [$time, $cb, $caller];	899	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	900	}
		901
		902	=item cf::register_extcmd $name => \&callback($pl,$packet);
		903
		904	Register a callbackf ro execution when the client sends an extcmd packet.
		905
		906	If the callback returns something, it is sent back as if reply was being
		907	called.
		908
		909	=cut
501		910
502	sub register_extcmd {	911	sub register_extcmd {
503	my ($name, $cb) = @_;	912	my ($name, $cb) = @_;
504		913
505	my $caller = caller;	914	$EXTCMD{$name} = $cb;
506	#warn "registering extcmd '$name' to '$caller'";
507
508	$extcmd{$name} = [$cb, $caller];
509	}	915	}
510		916
511	sub register {	917	cf::player->attach (
512	my ($base, $pkg) = @_;	918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
513		920
514	#TODO	921	my $cb = $COMMAND{$name}
515	}	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	);
516		948
517	sub load_extension {	949	sub load_extension {
518	my ($path) = @_;	950	my ($path) = @_;
519		951
520	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
521	my $base = $1;	953	my $base = $1;
522	my $pkg = $1;	954	my $pkg = $1;
523	$pkg =~ s/[^[:word:]]/_/g;	955	$pkg =~ s/[^[:word:]]/_/g;
524	$pkg = "ext::$pkg";	956	$pkg = "ext::$pkg";
525		957
526	warn "loading '$path' into '$pkg'\n";	958	warn "... loading '$path' into '$pkg'\n";
527		959
528	open my $fh, "<:utf8", $path	960	open my $fh, "<:utf8", $path
529	or die "$path: $!";	961	or die "$path: $!";
530		962
531	my $source =	963	my $source =
532	"package $pkg; use strict; use utf8;\n"	964	"package $pkg; use strict; use utf8;\n"
533	. "#line 1 \"$path\"\n{\n"	965	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })	966	. (do { local $/; <$fh> })
535	. "\n};\n1";	967	. "\n};\n1";
536		968
537	eval $source	969	unless (eval $source) {
538	or die "$path: $@";	970	my $msg = $@ ? "$path: $@\n"
539		971	: "extension disabled.\n";
540	push @exts, $pkg;	972	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
541	$ext_pkg{$base} = $pkg;	973	warn $@;
542		974	warn "mandatory extension failed to load, exiting.\n";
543	# no strict 'refs';	975	exit 1;
544	# @{"$pkg\::ISA"} = ext::;	976	}
545		977	die $@;
546	register $base, $pkg;
547	}
548
549	sub unload_extension {
550	my ($pkg) = @_;
551
552	warn "removing extension $pkg\n";
553
554	# remove hooks
555	#TODO
556	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};
558	# }	978	}
559		979
560	# remove commands	980	push @EXTS, $pkg;
561	for my $name (keys %command) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
563
564	if (@cb) {
565	$command{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};
570	}
571	}
572
573	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
575	delete $extcmd{$name};
576	}
577
578	if (my $cb = $pkg->can ("unload")) {
579	eval {
580	$cb->($pkg);
581	1
582	} or warn "$pkg unloaded, but with errors: $@";
583	}
584
585	Symbol::delete_package $pkg;
586	}	981	}
587		982
588	sub load_extensions {	983	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {	984	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;	985	next unless -r $ext;
593	eval {	986	eval {
594	load_extension $ext;	987	load_extension $ext;
595	1	988	1
596	} or warn "$ext not loaded: $@";	989	} or warn "$ext not loaded: $@";
597	}	990	}
598	}	991	}
599		992
600	sub _perl_reload(&) {	993	#############################################################################
		994
		995	=head2 CORE EXTENSIONS
		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} = $pl
		1056	}
		1057	}
		1058	}
		1059
		1060	sub save($) {
		1061	my ($pl) = @_;
		1062
		1063	return if $pl->{deny_save};
		1064
		1065	my $path = path $pl;
		1066	my $guard = cf::lock_acquire "user_save:$path";
		1067
		1068	return if $pl->{deny_save};
		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 '$base').";
		1370	()
		1371	}
		1372
		1373	sub init {
601	my ($msg) = @_;	1374	my ($self) = @_;
602		1375
603	$msg->("reloading...");	1376	$self
		1377	}
604		1378
605	eval {	1379	sub as_string {
606	# 1. cancel all watchers	1380	my ($self) = @_;
607	$_->cancel for Event::all_watchers;
608		1381
609	# 2. unload all extensions	1382	"$self->{path}"
610	for (@exts) {	1383	}
611	$msg->("unloading <$_>");
612	unload_extension $_;
613	}
614		1384
615	# 3. unload all modules loaded from $LIBDIR	1385	# the displayed name, this is a one way mapping
616	while (my ($k, $v) = each %INC) {	1386	sub visible_name {
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1387	&as_string
		1388	}
618		1389
619	$msg->("removing <$k>");	1390	# the original (read-only) location
620	delete $INC{$k};	1391	sub load_path {
		1392	my ($self) = @_;
621		1393
622	$k =~ s/\.pm$//;	1394	"$MAPDIR/$self->{path}.map"
623	$k =~ s/\//::/g;	1395	}
624		1396
625	if (my $cb = $k->can ("unload_module")) {	1397	# the temporary/swap location
626	$cb->();	1398	sub save_path {
		1399	my ($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);
627	}	1556	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638		1557	}
639	# 6. unload cf.pm "a bit"
640	delete $INC{"cf.pm"};
641		1558
642	# don't, removes xs symbols, too,	1559	Coro::cede;
643	# and global variables created in xs	1560	# now do the right thing for maps
644	#Symbol::delete_package __PACKAGE__;	1561	$self->link_multipart_objects;
		1562	$self->difficulty ($self->estimate_difficulty)
		1563	unless $self->difficulty;
		1564	Coro::cede;
645		1565
646	# 7. reload cf.pm	1566	unless ($self->{deny_activate}) {
647	$msg->("reloading cf.pm");	1567	$self->decay_objects;
648	require cf;	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);
		1577	}
		1578
		1579	$self->post_load;
		1580	}
		1581
		1582	sub customise_for {
		1583	my ($self, $ob) = @_;
		1584
		1585	return find "~" . $ob->name . "/" . $self->{path}
		1586	if $self->per_player;
		1587
		1588	$self
		1589	}
		1590
		1591	# find and load all maps in the 3x3 area around a map
		1592	sub load_diag {
		1593	my ($map) = @_;
		1594
		1595	my @diag; # diagonal neighbours
		1596
		1597	for (0 .. 3) {
		1598	my $neigh = $map->tile_path ($_)
		1599	or next;
		1600	$neigh = find $neigh, $map
		1601	or next;
		1602	$neigh->load;
		1603
		1604	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1605	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1606	}
		1607
		1608	for (@diag) {
		1609	my $neigh = find @$_
		1610	or next;
		1611	$neigh->load;
		1612	}
		1613	}
		1614
		1615	sub find_sync {
		1616	my ($path, $origin) = @_;
		1617
		1618	cf::sync_job { find $path, $origin }
		1619	}
		1620
		1621	sub do_load_sync {
		1622	my ($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};
		1648	}
		1649	}
		1650	undef $MAP_PREFETCHER;
649	};	1651	};
650	$msg->($@) if $@;	1652	$MAP_PREFETCHER->prio (6);
651		1653
652	$msg->("reloaded");	1654	()
653	};	1655	}
654		1656
655	sub perl_reload() {	1657	sub save {
656	_perl_reload {	1658	my ($self) = @_;
657	warn $_[0];	1659
658	print "$_[0]\n";	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 $self->players;
659	};	1677	};
660	}
661		1678
662	register_command "perl-reload", 0, sub {	1679	if ($uniq) {
663	my ($who, $arg) = @_;	1680	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
664		1681	$self->_save_objects ($uniq, cf::IO_UNIQUES);
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};
670	}
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {
679	my ($pl, $buf) = @_;
680
681	my $msg = eval { from_json $buf };
682
683	if (ref $msg) {
684	if (my $cb = $extcmd{$msg->{msgtype}}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {
686	$pl->ext_reply ($msg->{msgid}, %reply);
687	}
688	}
689	} else {	1682	} else {
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1683	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
691	}
692
693	cf::override;
694	},	1684	}
695	;	1685	}
696		1686
697	#############################################################################	1687	sub swap_out {
698	# load/save/clean perl data associated with a map
699
700	*cf::mapsupport::on_clean = sub {
701	my ($map) = @_;	1688	my ($self) = @_;
702		1689
703	my $path = $map->tmpname;	1690	# save first because save cedes
704	defined $path or return;	1691	$self->save;
705		1692
706	unlink "$path.pst";	1693	my $lock = cf::lock_acquire "map_data:" . $self->path;
707	};
708		1694
709	# old style persistent data, TODO: remove #d#	1695	return if $self->players;
710	*cf::mapsupport::on_swapin =	1696	return if $self->in_memory != cf::MAP_IN_MEMORY;
711	*cf::mapsupport::on_load = sub {	1697	return if $self->{deny_save};
		1698
		1699	$self->clear;
		1700	$self->in_memory (cf::MAP_SWAPPED);
		1701	}
		1702
		1703	sub reset_at {
712	my ($map) = @_;	1704	my ($self) = @_;
713		1705
714	my $path = $map->tmpname;	1706	# TODO: safety, remove and allow resettable per-player maps
715	$path = $map->path unless defined $path;	1707	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1708	return 1e99 if $self->{deny_reset};
716		1709
717	open my $fh, "<:raw", "$path.cfperl"	1710	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
718	or return; # no perl data	1711	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
719		1712
720	my $data = Storable::thaw do { local $/; <$fh> };	1713	$time + $to
721
722	$data->{version} <= 1
723	or return; # too new
724
725	$map->_set_obs ($data->{obs});
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728
729	attach_to_maps prio => -10000, package => cf::mapsupport::;
730
731	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}	1714	}
737		1715
738	attach_to_players	1716	sub should_reset {
739	on_load => sub {	1717	my ($self) = @_;
740	my ($pl, $path) = @_;
741		1718
742	for my $o (all_objects $pl->ob) {	1719	$self->reset_at <= $cf::RUNTIME
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1720	}
744	$o->set_ob_key_value ("_perl_data");
745		1721
746	%$o = %{ Storable::thaw pack "H*", $value };	1722	sub reset {
747	}	1723	my ($self) = @_;
748	}	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;
749	},	1740	}
750	;
751		1741
752	#############################################################################	1742	delete $cf::MAP{$self->path};
753	# core extensions - in perl
754		1743
755	=item cf::player::exists $login	1744	$self->clear;
756		1745
757	Returns true when the given account exists.	1746	$_->clear_links_to ($self) for values %cf::MAP;
758		1747
759	=cut	1748	$self->unlink_save;
760		1749	$self->destroy;
761	sub cf::player::exists($) {
762	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	1750	}
765		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;
		1805
		1806	=over 4
		1807
		1808	=item $ob->inv_recursive
		1809
		1810	Returns the inventory of the object _and_ their inventories, recursively.
		1811
		1812	=cut
		1813
		1814	sub inv_recursive_;
		1815	sub inv_recursive_ {
		1816	map { $_, inv_recursive_ $_->inv } @_
		1817	}
		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
766	=item $player->reply ($npc, $msg[, $flags])	1831	=item $player_object->reply ($npc, $msg[, $flags])
767		1832
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1833	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	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
770	dialogue with the given NPC character.	1835	dialogue with the given NPC character.
771		1836
772	=cut	1837	=cut
773		1838
774	# rough implementation of a future "reply" method that works	1839	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	1840	# with dialog boxes.
		1841	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	1842	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	1843	my ($self, $npc, $msg, $flags) = @_;
778		1844
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1845	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		1846
…		…
784	$msg = $npc->name . " says: $msg" if $npc;	1850	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	1851	$self->message ($msg, $flags);
786	}	1852	}
787	}	1853	}
788		1854
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	1855	=item $player_object->may ("access")
790		1856
791	Sends an ext reply to the player.	1857	Returns wether the given player is authorized to access resource "access"
		1858	(e.g. "command_wizcast").
792		1859
793	=cut	1860	=cut
794		1861
795	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 && $self->map->{path} ne "{link}";
		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	return unless $self->contr->active;
		1918
		1919	my $link_pos = delete $self->{_link_pos};
		1920
		1921	unless ($map) {
		1922	# restore original map position
		1923	($map, $x, $y) = @{ $link_pos || [] };
		1924	$map = cf::map::find $map;
		1925
		1926	unless ($map) {
		1927	($map, $x, $y) = @$EMERGENCY_POSITION;
		1928	$map = cf::map::find $map
		1929	or die "FATAL: cannot load emergency map\n";
		1930	}
		1931	}
		1932
		1933	($x, $y) = (-1, -1)
		1934	unless (defined $x) && (defined $y);
		1935
		1936	# use -1 or undef as default coordinates, not 0, 0
		1937	($x, $y) = ($map->enter_x, $map->enter_y)
		1938	if $x <=0 && $y <= 0;
		1939
		1940	$map->load;
		1941	$map->load_diag;
		1942
		1943	return unless $self->contr->active;
		1944	$self->activate_recursive;
		1945
		1946	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1947	$self->enter_map ($map, $x, $y);
		1948	}
		1949
		1950	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1951
		1952	Moves the player to the given map-path and coordinates by first freezing
		1953	her, loading and preparing them map, calling the provided $check callback
		1954	that has to return the map if sucecssful, and then unfreezes the player on
		1955	the new (success) or old (failed) map position.
		1956
		1957	=cut
		1958
		1959	our $GOTOGEN;
		1960
		1961	sub cf::object::player::goto {
		1962	my ($self, $path, $x, $y, $check) = @_;
		1963
		1964	# do generation counting so two concurrent goto's will be executed in-order
		1965	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1966
		1967	$self->enter_link;
		1968
		1969	(async {
		1970	my $map = eval {
		1971	my $map = cf::map::find $path;
		1972
		1973	if ($map) {
		1974	$map = $map->customise_for ($self);
		1975	$map = $check->($map) if $check && $map;
		1976	} else {
		1977	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1978	}
		1979
		1980	$map
		1981	};
		1982
		1983	if ($@) {
		1984	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1985	LOG llevError | logBacktrace, Carp::longmess $@;
		1986	}
		1987
		1988	if ($gen == $self->{_goto_generation}) {
		1989	delete $self->{_goto_generation};
		1990	$self->leave_link ($map, $x, $y);
		1991	}
		1992	})->prio (1);
		1993	}
		1994
		1995	=item $player_object->enter_exit ($exit_object)
		1996
		1997	=cut
		1998
		1999	sub parse_random_map_params {
		2000	my ($spec) = @_;
		2001
		2002	my $rmp = { # defaults
		2003	xsize => (cf::rndm 15, 40),
		2004	ysize => (cf::rndm 15, 40),
		2005	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2006	#layout => string,
		2007	};
		2008
		2009	for (split /\n/, $spec) {
		2010	my ($k, $v) = split /\s+/, $_, 2;
		2011
		2012	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2013	}
		2014
		2015	$rmp
		2016	}
		2017
		2018	sub prepare_random_map {
		2019	my ($exit) = @_;
		2020
		2021	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2022
		2023	# all this does is basically replace the /! path by
		2024	# a new random map path (?random/...) with a seed
		2025	# that depends on the exit object
		2026
		2027	my $rmp = parse_random_map_params $exit->msg;
		2028
		2029	if ($exit->map) {
		2030	$rmp->{region} = $exit->region->name;
		2031	$rmp->{origin_map} = $exit->map->path;
		2032	$rmp->{origin_x} = $exit->x;
		2033	$rmp->{origin_y} = $exit->y;
		2034	}
		2035
		2036	$rmp->{random_seed} ||= $exit->random_seed;
		2037
		2038	my $data = cf::to_json $rmp;
		2039	my $md5 = Digest::MD5::md5_hex $data;
		2040	my $meta = "$RANDOMDIR/$md5.meta";
		2041
		2042	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2043	aio_write $fh, 0, (length $data), $data, 0;
		2044	undef $fh;
		2045	aio_rename "$meta~", $meta;
		2046
		2047	$exit->slaying ("?random/$md5");
		2048	$exit->msg (undef);
		2049	}
		2050	}
		2051
		2052	sub cf::object::player::enter_exit {
		2053	my ($self, $exit) = @_;
		2054
		2055	return unless $self->type == cf::PLAYER;
		2056
		2057	if ($exit->slaying eq "/!") {
		2058	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2059	# the problem is that $exit might not survive long enough
		2060	# so it needs to be done right now, right here
		2061	cf::sync_job { prepare_random_map $exit };
		2062	}
		2063
		2064	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2065	my $hp = $exit->stats->hp;
		2066	my $sp = $exit->stats->sp;
		2067
		2068	$self->enter_link;
		2069
		2070	(async {
		2071	$self->deactivate_recursive; # just to be sure
		2072	unless (eval {
		2073	$self->goto ($slaying, $hp, $sp);
		2074
		2075	1;
		2076	}) {
		2077	$self->message ("Something went wrong deep within the crossfire server. "
		2078	. "I'll try to bring you back to the map you were before. "
		2079	. "Please report this to the dungeon master!",
		2080	cf::NDI_UNIQUE | cf::NDI_RED);
		2081
		2082	warn "ERROR in enter_exit: $@";
		2083	$self->leave_link;
		2084	}
		2085	})->prio (1);
		2086	}
		2087
		2088	=head3 cf::client
		2089
		2090	=over 4
		2091
		2092	=item $client->send_drawinfo ($text, $flags)
		2093
		2094	Sends a drawinfo packet to the client. Circumvents output buffering so
		2095	should not be used under normal circumstances.
		2096
		2097	=cut
		2098
		2099	sub cf::client::send_drawinfo {
		2100	my ($self, $text, $flags) = @_;
		2101
		2102	utf8::encode $text;
		2103	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2104	}
		2105
		2106	=item $client->ext_event ($type, %msg)
		2107
		2108	Sends an exti event to the client.
		2109
		2110	=cut
		2111
		2112	sub cf::client::ext_event($$%) {
796	my ($self, $id, %msg) = @_;	2113	my ($self, $type, %msg) = @_;
797		2114
798	$msg{msgid} = $id;	2115	$msg{msgtype} = "event_$type";
799
800	$self->send ("ext " . to_json \%msg);	2116	$self->send_packet ("ext " . cf::to_json \%msg);
801	}	2117	}
802		2118
803	#############################################################################	2119	=item $success = $client->query ($flags, "text", \&cb)
804	# map scripting support	2120
		2121	Queues a query to the client, calling the given callback with
		2122	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2123	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2124
		2125	Queries can fail, so check the return code. Or don't, as queries will become
		2126	reliable at some point in the future.
		2127
		2128	=cut
		2129
		2130	sub cf::client::query {
		2131	my ($self, $flags, $text, $cb) = @_;
		2132
		2133	return unless $self->state == ST_PLAYING
		2134	|| $self->state == ST_SETUP
		2135	|| $self->state == ST_CUSTOM;
		2136
		2137	$self->state (ST_CUSTOM);
		2138
		2139	utf8::encode $text;
		2140	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2141
		2142	$self->send_packet ($self->{query_queue}[0][0])
		2143	if @{ $self->{query_queue} } == 1;
		2144	}
		2145
		2146	cf::client->attach (
		2147	on_reply => sub {
		2148	my ($ns, $msg) = @_;
		2149
		2150	# this weird shuffling is so that direct followup queries
		2151	# get handled first
		2152	my $queue = delete $ns->{query_queue}
		2153	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2154
		2155	(shift @$queue)->[1]->($msg);
		2156	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2157
		2158	push @{ $ns->{query_queue} }, @$queue;
		2159
		2160	if (@{ $ns->{query_queue} } == @$queue) {
		2161	if (@$queue) {
		2162	$ns->send_packet ($ns->{query_queue}[0][0]);
		2163	} else {
		2164	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2165	}
		2166	}
		2167	},
		2168	);
		2169
		2170	=item $client->async (\&cb)
		2171
		2172	Create a new coroutine, running the specified callback. The coroutine will
		2173	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2174	or loss of connection).
		2175
		2176	=cut
		2177
		2178	sub cf::client::async {
		2179	my ($self, $cb) = @_;
		2180
		2181	my $coro = &Coro::async ($cb);
		2182
		2183	$coro->on_destroy (sub {
		2184	delete $self->{_coro}{$coro+0};
		2185	});
		2186
		2187	$self->{_coro}{$coro+0} = $coro;
		2188
		2189	$coro
		2190	}
		2191
		2192	cf::client->attach (
		2193	on_destroy => sub {
		2194	my ($ns) = @_;
		2195
		2196	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2197	},
		2198	);
		2199
		2200	=back
		2201
		2202
		2203	=head2 SAFE SCRIPTING
		2204
		2205	Functions that provide a safe environment to compile and execute
		2206	snippets of perl code without them endangering the safety of the server
		2207	itself. Looping constructs, I/O operators and other built-in functionality
		2208	is not available in the safe scripting environment, and the number of
		2209	functions and methods that can be called is greatly reduced.
		2210
		2211	=cut
805		2212
806	our $safe = new Safe "safe";	2213	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	2214	our $safe_hole = new Safe::Hole;
808		2215
809	$SIG{FPE} = 'IGNORE';	2216	$SIG{FPE} = 'IGNORE';
810		2217
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2218	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
812		2219
813	# here we export the classes and methods available to script code	2220	# here we export the classes and methods available to script code
814		2221
		2222	=pod
		2223
		2224	The following functions and methods are available within a safe environment:
		2225
		2226	cf::object contr pay_amount pay_player map
		2227	cf::object::player player
		2228	cf::player peaceful
		2229	cf::map trigger
		2230
		2231	=cut
		2232
815	for (	2233	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	2234	["cf::object" => qw(contr pay_amount pay_player map)],
817	["cf::object::player" => qw(player)],	2235	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	2236	["cf::player" => qw(peaceful)],
		2237	["cf::map" => qw(trigger)],
819	) {	2238	) {
820	no strict 'refs';	2239	no strict 'refs';
821	my ($pkg, @funs) = @$_;	2240	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2241	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	2242	for @funs;
824	}	2243	}
		2244
		2245	=over 4
		2246
		2247	=item @retval = safe_eval $code, [var => value, ...]
		2248
		2249	Compiled and executes the given perl code snippet. additional var/value
		2250	pairs result in temporary local (my) scalar variables of the given name
		2251	that are available in the code snippet. Example:
		2252
		2253	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2254
		2255	=cut
825		2256
826	sub safe_eval($;@) {	2257	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	2258	my ($code, %vars) = @_;
828		2259
829	my $qcode = $code;	2260	my $qcode = $code;
…		…
852	}	2283	}
853		2284
854	wantarray ? @res : $res[0]	2285	wantarray ? @res : $res[0]
855	}	2286	}
856		2287
		2288	=item cf::register_script_function $function => $cb
		2289
		2290	Register a function that can be called from within map/npc scripts. The
		2291	function should be reasonably secure and should be put into a package name
		2292	like the extension.
		2293
		2294	Example: register a function that gets called whenever a map script calls
		2295	C<rent::overview>, as used by the C<rent> extension.
		2296
		2297	cf::register_script_function "rent::overview" => sub {
		2298	...
		2299	};
		2300
		2301	=cut
		2302
857	sub register_script_function {	2303	sub register_script_function {
858	my ($fun, $cb) = @_;	2304	my ($fun, $cb) = @_;
859		2305
860	no strict 'refs';	2306	no strict 'refs';
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2307	*{"safe::$fun"} = $safe_hole->wrap ($cb);
862	}	2308	}
863		2309
		2310	=back
		2311
		2312	=cut
		2313
864	#############################################################################	2314	#############################################################################
865	# the server's main()	2315
		2316	=head2 EXTENSION DATABASE SUPPORT
		2317
		2318	Crossfire maintains a very simple database for extension use. It can
		2319	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2320	convert to/from binary).
		2321
		2322	The parameter C<$family> should best start with the name of the extension
		2323	using it, it should be unique.
		2324
		2325	=over 4
		2326
		2327	=item $value = cf::db_get $family => $key
		2328
		2329	Returns a single value from the database.
		2330
		2331	=item cf::db_put $family => $key => $value
		2332
		2333	Stores the given C<$value> in the family.
		2334
		2335	=cut
		2336
		2337	our $DB;
		2338
		2339	sub db_init {
		2340	unless ($DB) {
		2341	$DB = BDB::db_create $DB_ENV;
		2342
		2343	cf::sync_job {
		2344	eval {
		2345	$DB->set_flags (BDB::CHKSUM);
		2346
		2347	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2348	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2349	cf::cleanup "db_open(db): $!" if $!;
		2350	};
		2351	cf::cleanup "db_open(db): $@" if $@;
		2352	};
		2353	}
		2354	}
		2355
		2356	sub db_get($$) {
		2357	my $key = "$_[0]/$_[1]";
		2358
		2359	cf::sync_job {
		2360	BDB::db_get $DB, undef, $key, my $data;
		2361
		2362	$! ? ()
		2363	: $data
		2364	}
		2365	}
		2366
		2367	sub db_put($$$) {
		2368	BDB::dbreq_pri 4;
		2369	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2370	}
		2371
		2372	=item cf::cache $id => [$paths...], $processversion => $process
		2373
		2374	Generic caching function that returns the value of the resource $id,
		2375	caching and regenerating as required.
		2376
		2377	This function can block.
		2378
		2379	=cut
		2380
		2381	sub cache {
		2382	my ($id, $src, $processversion, $process) = @_;
		2383
		2384	my $meta =
		2385	join "\x00",
		2386	$processversion,
		2387	map {
		2388	aio_stat $_
		2389	and Carp::croak "$_: $!";
		2390
		2391	($_, (stat _)[7,9])
		2392	} @$src;
		2393
		2394	my $dbmeta = db_get cache => "$id/meta";
		2395	if ($dbmeta ne $meta) {
		2396	# changed, we may need to process
		2397
		2398	my @data;
		2399	my $md5;
		2400
		2401	for (0 .. $#$src) {
		2402	0 <= aio_load $src->[$_], $data[$_]
		2403	or Carp::croak "$src->[$_]: $!";
		2404	}
		2405
		2406	# if processing is expensive, check
		2407	# checksum first
		2408	if (1) {
		2409	$md5 =
		2410	join "\x00",
		2411	$processversion,
		2412	map {
		2413	Coro::cede;
		2414	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2415	} 0.. $#$src;
		2416
		2417
		2418	my $dbmd5 = db_get cache => "$id/md5";
		2419	if ($dbmd5 eq $md5) {
		2420	db_put cache => "$id/meta", $meta;
		2421
		2422	return db_get cache => "$id/data";
		2423	}
		2424	}
		2425
		2426	my $t1 = Time::HiRes::time;
		2427	my $data = $process->(\@data);
		2428	my $t2 = Time::HiRes::time;
		2429
		2430	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2431
		2432	db_put cache => "$id/data", $data;
		2433	db_put cache => "$id/md5" , $md5;
		2434	db_put cache => "$id/meta", $meta;
		2435
		2436	return $data;
		2437	}
		2438
		2439	db_get cache => "$id/data"
		2440	}
		2441
		2442	=item fork_call { }, $args
		2443
		2444	Executes the given code block with the given arguments in a seperate
		2445	process, returning the results. Everything must be serialisable with
		2446	Coro::Storable. May, of course, block. Note that the executed sub may
		2447	never block itself or use any form of Event handling.
		2448
		2449	=cut
		2450
		2451	sub fork_call(&@) {
		2452	my ($cb, @args) = @_;
		2453
		2454	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2455	# or die "socketpair: $!";
		2456	pipe my $fh1, my $fh2
		2457	or die "pipe: $!";
		2458
		2459	if (my $pid = fork) {
		2460	close $fh2;
		2461
		2462	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2463	$res = Coro::Storable::thaw $res;
		2464
		2465	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2466
		2467	die $$res unless "ARRAY" eq ref $res;
		2468
		2469	return wantarray ? @$res : $res->[-1];
		2470	} else {
		2471	reset_signals;
		2472	local $SIG{__WARN__};
		2473	local $SIG{__DIE__};
		2474	eval {
		2475	close $fh1;
		2476
		2477	my @res = eval { $cb->(@args) };
		2478	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2479	};
		2480
		2481	warn $@ if $@;
		2482	_exit 0;
		2483	}
		2484	}
		2485
		2486
		2487
		2488	#############################################################################
		2489	# the server's init and main functions
		2490
		2491	sub load_facedata($) {
		2492	my ($path) = @_;
		2493
		2494	warn "loading facedata from $path\n";
		2495
		2496	my $facedata;
		2497	0 < aio_load $path, $facedata
		2498	or die "$path: $!";
		2499
		2500	$facedata = Coro::Storable::thaw $facedata;
		2501
		2502	$facedata->{version} == 2
		2503	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2504
		2505	{
		2506	my $faces = $facedata->{faceinfo};
		2507
		2508	while (my ($face, $info) = each %$faces) {
		2509	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2510	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2511	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2512	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2513	Coro::cede;
		2514	}
		2515
		2516	while (my ($face, $info) = each %$faces) {
		2517	next unless $info->{smooth};
		2518	my $idx = cf::face::find $face
		2519	or next;
		2520	if (my $smooth = cf::face::find $info->{smooth}) {
		2521	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2522	} else {
		2523	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2524	}
		2525	Coro::cede;
		2526	}
		2527	}
		2528
		2529	{
		2530	my $anims = $facedata->{animinfo};
		2531
		2532	while (my ($anim, $info) = each %$anims) {
		2533	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2534	Coro::cede;
		2535	}
		2536
		2537	cf::anim::invalidate_all; # d'oh
		2538	}
		2539
		2540	1
		2541	}
		2542
		2543	sub reload_regions {
		2544	load_resource_file "$MAPDIR/regions"
		2545	or die "unable to load regions file\n";
		2546	}
		2547
		2548	sub reload_facedata {
		2549	load_facedata "$DATADIR/facedata"
		2550	or die "unable to load facedata\n";
		2551	}
		2552
		2553	sub reload_archetypes {
		2554	load_resource_file "$DATADIR/archetypes"
		2555	or die "unable to load archetypes\n";
		2556	}
		2557
		2558	sub reload_treasures {
		2559	load_resource_file "$DATADIR/treasures"
		2560	or die "unable to load treasurelists\n";
		2561	}
		2562
		2563	sub reload_resources {
		2564	warn "reloading resource files...\n";
		2565
		2566	reload_regions;
		2567	reload_facedata;
		2568	reload_archetypes;
		2569	reload_treasures;
		2570
		2571	warn "finished reloading resource files\n";
		2572	}
		2573
		2574	sub init {
		2575	reload_resources;
		2576	}
		2577
		2578	sub cfg_load {
		2579	open my $fh, "<:utf8", "$CONFDIR/config"
		2580	or return;
		2581
		2582	local $/;
		2583	*CFG = YAML::Syck::Load <$fh>;
		2584
		2585	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2586
		2587	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2588	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2589
		2590	if (exists $CFG{mlockall}) {
		2591	eval {
		2592	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2593	and die "WARNING: m(un)lockall failed: $!\n";
		2594	};
		2595	warn $@ if $@;
		2596	}
		2597	}
866		2598
867	sub main {	2599	sub main {
		2600	# we must not ever block the main coroutine
		2601	local $Coro::idle = sub {
		2602	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2603	(async {
		2604	Event::one_event;
		2605	})->prio (Coro::PRIO_MAX);
		2606	};
		2607
		2608	cfg_load;
		2609	db_init;
		2610	load_extensions;
		2611
		2612	$TICK_WATCHER->start;
868	Event::loop;	2613	Event::loop;
869	}	2614	}
870		2615
871	#############################################################################	2616	#############################################################################
872	# initialisation	2617	# initialisation and cleanup
873		2618
874	register "<global>", __PACKAGE__;	2619	# install some emergency cleanup handlers
		2620	BEGIN {
		2621	for my $signal (qw(INT HUP TERM)) {
		2622	Event->signal (
		2623	reentrant => 0,
		2624	data => WF_AUTOCANCEL,
		2625	signal => $signal,
		2626	prio => 0,
		2627	cb => sub {
		2628	cf::cleanup "SIG$signal";
		2629	},
		2630	);
		2631	}
		2632	}
		2633
		2634	sub emergency_save() {
		2635	my $freeze_guard = cf::freeze_mainloop;
		2636
		2637	warn "enter emergency perl save\n";
		2638
		2639	cf::sync_job {
		2640	# use a peculiar iteration method to avoid tripping on perl
		2641	# refcount bugs in for. also avoids problems with players
		2642	# and maps saved/destroyed asynchronously.
		2643	warn "begin emergency player save\n";
		2644	for my $login (keys %cf::PLAYER) {
		2645	my $pl = $cf::PLAYER{$login} or next;
		2646	$pl->valid or next;
		2647	$pl->save;
		2648	}
		2649	warn "end emergency player save\n";
		2650
		2651	warn "begin emergency map save\n";
		2652	for my $path (keys %cf::MAP) {
		2653	my $map = $cf::MAP{$path} or next;
		2654	$map->valid or next;
		2655	$map->save;
		2656	}
		2657	warn "end emergency map save\n";
		2658
		2659	warn "begin emergency database checkpoint\n";
		2660	BDB::db_env_txn_checkpoint $DB_ENV;
		2661	warn "end emergency database checkpoint\n";
		2662	};
		2663
		2664	warn "leave emergency perl save\n";
		2665	}
		2666
		2667	sub post_cleanup {
		2668	my ($make_core) = @_;
		2669
		2670	warn Carp::longmess "post_cleanup backtrace"
		2671	if $make_core;
		2672	}
		2673
		2674	sub do_reload_perl() {
		2675	# can/must only be called in main
		2676	if ($Coro::current != $Coro::main) {
		2677	warn "can only reload from main coroutine";
		2678	return;
		2679	}
		2680
		2681	warn "reloading...";
		2682
		2683	warn "entering sync_job";
		2684
		2685	cf::sync_job {
		2686	cf::write_runtime; # external watchdog should not bark
		2687	cf::emergency_save;
		2688	cf::write_runtime; # external watchdog should not bark
		2689
		2690	warn "syncing database to disk";
		2691	BDB::db_env_txn_checkpoint $DB_ENV;
		2692
		2693	# if anything goes wrong in here, we should simply crash as we already saved
		2694
		2695	warn "cancelling all WF_AUTOCANCEL watchers";
		2696	for (Event::all_watchers) {
		2697	$_->cancel if $_->data & WF_AUTOCANCEL;
		2698	}
		2699
		2700	warn "flushing outstanding aio requests";
		2701	for (;;) {
		2702	BDB::flush;
		2703	IO::AIO::flush;
		2704	Coro::cede;
		2705	last unless IO::AIO::nreqs || BDB::nreqs;
		2706	warn "iterate...";
		2707	}
		2708
		2709	++$RELOAD;
		2710
		2711	warn "cancelling all extension coros";
		2712	$_->cancel for values %EXT_CORO;
		2713	%EXT_CORO = ();
		2714
		2715	warn "removing commands";
		2716	%COMMAND = ();
		2717
		2718	warn "removing ext commands";
		2719	%EXTCMD = ();
		2720
		2721	warn "unloading/nuking all extensions";
		2722	for my $pkg (@EXTS) {
		2723	warn "... unloading $pkg";
		2724
		2725	if (my $cb = $pkg->can ("unload")) {
		2726	eval {
		2727	$cb->($pkg);
		2728	1
		2729	} or warn "$pkg unloaded, but with errors: $@";
		2730	}
		2731
		2732	warn "... nuking $pkg";
		2733	Symbol::delete_package $pkg;
		2734	}
		2735
		2736	warn "unloading all perl modules loaded from $LIBDIR";
		2737	while (my ($k, $v) = each %INC) {
		2738	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2739
		2740	warn "... unloading $k";
		2741	delete $INC{$k};
		2742
		2743	$k =~ s/\.pm$//;
		2744	$k =~ s/\//::/g;
		2745
		2746	if (my $cb = $k->can ("unload_module")) {
		2747	$cb->();
		2748	}
		2749
		2750	Symbol::delete_package $k;
		2751	}
		2752
		2753	warn "getting rid of safe::, as good as possible";
		2754	Symbol::delete_package "safe::$_"
		2755	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2756
		2757	warn "unloading cf.pm \"a bit\"";
		2758	delete $INC{"cf.pm"};
		2759	delete $INC{"cf/pod.pm"};
		2760
		2761	# don't, removes xs symbols, too,
		2762	# and global variables created in xs
		2763	#Symbol::delete_package __PACKAGE__;
		2764
		2765	warn "unload completed, starting to reload now";
		2766
		2767	warn "reloading cf.pm";
		2768	require cf;
		2769	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2770
		2771	warn "loading config and database again";
		2772	cf::cfg_load;
		2773
		2774	warn "loading extensions";
		2775	cf::load_extensions;
		2776
		2777	warn "reattaching attachments to objects/players";
		2778	_global_reattach; # objects, sockets
		2779	warn "reattaching attachments to maps";
		2780	reattach $_ for values %MAP;
		2781	warn "reattaching attachments to players";
		2782	reattach $_ for values %PLAYER;
		2783
		2784	warn "leaving sync_job";
		2785
		2786	1
		2787	} or do {
		2788	warn $@;
		2789	warn "error while reloading, exiting.";
		2790	exit 1;
		2791	};
		2792
		2793	warn "reloaded";
		2794	};
		2795
		2796	our $RELOAD_WATCHER; # used only during reload
		2797
		2798	sub reload_perl() {
		2799	# doing reload synchronously and two reloads happen back-to-back,
		2800	# coro crashes during coro_state_free->destroy here.
		2801
		2802	$RELOAD_WATCHER ||= Event->timer (
		2803	reentrant => 0,
		2804	after => 0,
		2805	data => WF_AUTOCANCEL,
		2806	cb => sub {
		2807	do_reload_perl;
		2808	undef $RELOAD_WATCHER;
		2809	},
		2810	);
		2811	}
		2812
		2813	register_command "reload" => sub {
		2814	my ($who, $arg) = @_;
		2815
		2816	if ($who->flag (FLAG_WIZ)) {
		2817	$who->message ("reloading server.");
		2818	async { reload_perl };
		2819	}
		2820	};
875		2821
876	unshift @INC, $LIBDIR;	2822	unshift @INC, $LIBDIR;
877		2823
878	load_extensions;	2824	my $bug_warning = 0;
879		2825
		2826	our @WAIT_FOR_TICK;
		2827	our @WAIT_FOR_TICK_BEGIN;
		2828
		2829	sub wait_for_tick {
		2830	return unless $TICK_WATCHER->is_active;
		2831	return if $Coro::current == $Coro::main;
		2832
		2833	my $signal = new Coro::Signal;
		2834	push @WAIT_FOR_TICK, $signal;
		2835	$signal->wait;
		2836	}
		2837
		2838	sub wait_for_tick_begin {
		2839	return unless $TICK_WATCHER->is_active;
		2840	return if $Coro::current == $Coro::main;
		2841
		2842	my $signal = new Coro::Signal;
		2843	push @WAIT_FOR_TICK_BEGIN, $signal;
		2844	$signal->wait;
		2845	}
		2846
		2847	my $min = 1e6;#d#
		2848	my $avg = 10;
880	$TICK_WATCHER = Event->timer (	2849	$TICK_WATCHER = Event->timer (
		2850	reentrant => 0,
		2851	parked => 1,
881	prio => 1,	2852	prio => 0,
882	at => $NEXT_TICK || 1,	2853	at => $NEXT_TICK || $TICK,
		2854	data => WF_AUTOCANCEL,
883	cb => sub {	2855	cb => sub {
		2856	if ($Coro::current != $Coro::main) {
		2857	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2858	unless ++$bug_warning > 10;
		2859	return;
		2860	}
		2861
		2862	$NOW = $tick_start = Event::time;
		2863
884	cf::server_tick; # one server iteration	2864	cf::server_tick; # one server iteration
885		2865
		2866	0 && sync_job {#d#
		2867	for(1..10) {
886	my $NOW = Event::time;	2868	my $t = Event::time;
		2869	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2870	or die;
		2871
		2872	$map->width (50);
		2873	$map->height (50);
		2874	$map->alloc;
		2875	$map->_load_objects ("/tmp/x.map", 1);
		2876	my $t = Event::time - $t;
		2877
		2878	#next unless $t < 0.0013;#d#
		2879	if ($t < $min) {
		2880	$min = $t;
		2881	}
		2882	$avg = $avg * 0.99 + $t * 0.01;
		2883	}
		2884	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2885	exit 0;
		2886	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2887	};
		2888
		2889	$RUNTIME += $TICK;
887	$NEXT_TICK += $TICK;	2890	$NEXT_TICK += $TICK;
888		2891
		2892	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2893	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2894	Coro::async_pool {
		2895	write_runtime
		2896	or warn "ERROR: unable to write runtime file: $!";
		2897	};
		2898	}
		2899
		2900	# my $AFTER = Event::time;
		2901	# warn $AFTER - $NOW;#d#
		2902
		2903	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2904	$sig->send;
		2905	}
		2906	while (my $sig = shift @WAIT_FOR_TICK) {
		2907	$sig->send;
		2908	}
		2909
		2910	$NOW = Event::time;
		2911
889	# if we are delayed by four ticks, skip them all	2912	# if we are delayed by four ticks or more, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2913	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
891		2914
892	$TICK_WATCHER->at ($NEXT_TICK);	2915	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;	2916	$TICK_WATCHER->start;
		2917
		2918	$LOAD = ($NOW - $tick_start) / $TICK;
		2919	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2920
		2921	_post_tick;
		2922
		2923
894	},	2924	},
895	);	2925	);
896		2926
897	_reload_2;	2927	{
		2928	BDB::max_poll_time $TICK * 0.1;
		2929	$BDB_POLL_WATCHER = Event->io (
		2930	reentrant => 0,
		2931	fd => BDB::poll_fileno,
		2932	poll => 'r',
		2933	prio => 0,
		2934	data => WF_AUTOCANCEL,
		2935	cb => \&BDB::poll_cb,
		2936	);
		2937	BDB::min_parallel 8;
		2938
		2939	BDB::set_sync_prepare {
		2940	my $status;
		2941	my $current = $Coro::current;
		2942	(
		2943	sub {
		2944	$status = $!;
		2945	$current->ready; undef $current;
		2946	},
		2947	sub {
		2948	Coro::schedule while defined $current;
		2949	$! = $status;
		2950	},
		2951	)
		2952	};
		2953
		2954	unless ($DB_ENV) {
		2955	$DB_ENV = BDB::db_env_create;
		2956
		2957	cf::sync_job {
		2958	eval {
		2959	BDB::db_env_open
		2960	$DB_ENV,
		2961	$BDBDIR,
		2962	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2963	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2964	0666;
		2965
		2966	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2967
		2968	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2969	$DB_ENV->set_lk_detect;
		2970	};
		2971
		2972	cf::cleanup "db_env_open(db): $@" if $@;
		2973	};
		2974	}
		2975	}
		2976
		2977	{
		2978	IO::AIO::min_parallel 8;
		2979
		2980	undef $Coro::AIO::WATCHER;
		2981	IO::AIO::max_poll_time $TICK * 0.1;
		2982	$AIO_POLL_WATCHER = Event->io (
		2983	reentrant => 0,
		2984	data => WF_AUTOCANCEL,
		2985	fd => IO::AIO::poll_fileno,
		2986	poll => 'r',
		2987	prio => 6,
		2988	cb => \&IO::AIO::poll_cb,
		2989	);
		2990	}
		2991
		2992	my $_log_backtrace;
		2993
		2994	sub _log_backtrace {
		2995	my ($msg, @addr) = @_;
		2996
		2997	$msg =~ s/\n//;
		2998
		2999	# limit the # of concurrent backtraces
		3000	if ($_log_backtrace < 2) {
		3001	++$_log_backtrace;
		3002	async {
		3003	my @bt = fork_call {
		3004	@addr = map { sprintf "%x", $_ } @addr;
		3005	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3006	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3007	or die "addr2line: $!";
		3008
		3009	my @funcs;
		3010	my @res = <$fh>;
		3011	chomp for @res;
		3012	while (@res) {
		3013	my ($func, $line) = splice @res, 0, 2, ();
		3014	push @funcs, "[$func] $line";
		3015	}
		3016
		3017	@funcs
		3018	};
		3019
		3020	LOG llevInfo, "[ABT] $msg\n";
		3021	LOG llevInfo, "[ABT] $_\n" for @bt;
		3022	--$_log_backtrace;
		3023	};
		3024	} else {
		3025	LOG llevInfo, "[ABT] $msg\n";
		3026	LOG llevInfo, "[ABT] [suppressed]\n";
		3027	}
		3028	}
		3029
		3030	# load additional modules
		3031	use cf::pod;
		3032
		3033	END { cf::emergency_save }
898		3034
899	1	3035	1
900		3036

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