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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.264 by root, Sun May 6 05:44:48 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 $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	binmode STDOUT;
		96	binmode STDERR;
		97
		98	# read virtual server time, if available
		99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		100	open my $fh, "<", "$LOCALDIR/runtime"
		101	or die "unable to read runtime file: $!";
		102	$RUNTIME = <$fh> + 0.;
		103	}
		104
		105	mkdir $_
		106	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		107
		108	our $EMERGENCY_POSITION;
		109
		110	sub cf::map::normalise;
		111
		112	#############################################################################
		113
		114	=head2 GLOBAL VARIABLES
		115
		116	=over 4
		117
		118	=item $cf::UPTIME
		119
		120	The timestamp of the server start (so not actually an uptime).
		121
		122	=item $cf::RUNTIME
		123
		124	The time this server has run, starts at 0 and is increased by $cf::TICK on
		125	every server tick.
		126
		127	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		128	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		129	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		130
		131	Various directories - "/etc", read-only install directory, perl-library
		132	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		133	unique-items directory, player file directory, random maps directory and
		134	database environment.
		135
		136	=item $cf::NOW
		137
		138	The time of the last (current) server tick.
		139
		140	=item $cf::TICK
		141
		142	The interval between server ticks, in seconds.
		143
		144	=item %cf::CFG
		145
		146	Configuration for the server, loaded from C</etc/crossfire/config>, or
		147	from wherever your confdir points to.
		148
		149	=item cf::wait_for_tick, cf::wait_for_tick_begin
		150
		151	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		152	returns directly I<after> the tick processing (and consequently, can only wake one process
		153	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		154
		155	=back
		156
		157	=cut
27		158
28	BEGIN {	159	BEGIN {
29	*CORE::GLOBAL::warn = sub {	160	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	161	my $msg = join "", @_;
		162
31	$msg .= "\n"	163	$msg .= "\n"
32	unless $msg =~ /\n$/;	164	unless $msg =~ /\n$/;
33		165
34	print STDERR "cfperl: $msg";	166	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		167
		168	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	169	LOG llevError, $msg;
36	};	170	};
37	}	171	}
38		172
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	177	@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';	178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		179
75	# we bless all objects into (empty) derived classes to force a method lookup	180	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	181	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	182	for my $pkg (qw(
		183	cf::global cf::attachable
		184	cf::object cf::object::player
		185	cf::client cf::player
		186	cf::arch cf::living
		187	cf::map cf::party cf::region
		188	)) {
78	no strict 'refs';	189	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	190	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	191	}
81		192
82	$Event::DIED = sub {	193	$Event::DIED = sub {
83	warn "error in event callback: @_";	194	warn "error in event callback: @_";
84	};	195	};
85		196
86	my %ext_pkg;	197	=head2 UTILITY FUNCTIONS
87	my @exts;	198
88	my @hook;	199	=over 4
89	my %command;	200
90	my %extcmd;	201	=item dumpval $ref
		202
		203	=cut
		204
		205	sub dumpval {
		206	eval {
		207	local $SIG{__DIE__};
		208	my $d;
		209	if (1) {
		210	$d = new Data::Dumper([$_[0]], ["*var"]);
		211	$d->Terse(1);
		212	$d->Indent(2);
		213	$d->Quotekeys(0);
		214	$d->Useqq(1);
		215	#$d->Bless(...);
		216	$d->Seen($_[1]) if @_ > 1;
		217	$d = $d->Dump();
		218	}
		219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		220	$d
		221	} || "[unable to dump $_[0]: '$@']";
		222	}
		223
		224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		225
		226	=item $ref = cf::from_json $json
		227
		228	Converts a JSON string into the corresponding perl data structure.
		229
		230	=item $json = cf::to_json $ref
		231
		232	Converts a perl data structure into its JSON representation.
		233
		234	=item cf::lock_wait $string
		235
		236	Wait until the given lock is available. See cf::lock_acquire.
		237
		238	=item my $lock = cf::lock_acquire $string
		239
		240	Wait until the given lock is available and then acquires it and returns
		241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		242	for example when the coroutine gets canceled), the lock is automatically
		243	returned.
		244
		245	Lock names should begin with a unique identifier (for example, cf::map::find
		246	uses map_find and cf::map::load uses map_load).
		247
		248	=item $locked = cf::lock_active $string
		249
		250	Return true if the lock is currently active, i.e. somebody has locked it.
		251
		252	=cut
		253
		254	our %LOCK;
		255
		256	sub lock_wait($) {
		257	my ($key) = @_;
		258
		259	# wait for lock, if any
		260	while ($LOCK{$key}) {
		261	push @{ $LOCK{$key} }, $Coro::current;
		262	Coro::schedule;
		263	}
		264	}
		265
		266	sub lock_acquire($) {
		267	my ($key) = @_;
		268
		269	# wait, to be sure we are not locked
		270	lock_wait $key;
		271
		272	$LOCK{$key} = [];
		273
		274	Coro::guard {
		275	# wake up all waiters, to be on the safe side
		276	$_->ready for @{ delete $LOCK{$key} };
		277	}
		278	}
		279
		280	sub lock_active($) {
		281	my ($key) = @_;
		282
		283	! ! $LOCK{$key}
		284	}
		285
		286	sub freeze_mainloop {
		287	return unless $TICK_WATCHER->is_active;
		288
		289	my $guard = Coro::guard {
		290	$TICK_WATCHER->start;
		291	};
		292	$TICK_WATCHER->stop;
		293	$guard
		294	}
		295
		296	=item cf::async { BLOCK }
		297
		298	Currently the same as Coro::async_pool, meaning you cannot use
		299	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		300	thing you are allowed to do is call C<prio> on it.
		301
		302	=cut
		303
		304	BEGIN { *async = \&Coro::async_pool }
		305
		306	=item cf::sync_job { BLOCK }
		307
		308	The design of crossfire+ requires that the main coro ($Coro::main) is
		309	always able to handle events or runnable, as crossfire+ is only partly
		310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		311
		312	If it must be done, put the blocking parts into C<sync_job>. This will run
		313	the given BLOCK in another coroutine while waiting for the result. The
		314	server will be frozen during this time, so the block should either finish
		315	fast or be very important.
		316
		317	=cut
		318
		319	sub sync_job(&) {
		320	my ($job) = @_;
		321
		322	if ($Coro::current == $Coro::main) {
		323	# this is the main coro, too bad, we have to block
		324	# till the operation succeeds, freezing the server :/
		325
		326	# TODO: use suspend/resume instead
		327	# (but this is cancel-safe)
		328	my $freeze_guard = freeze_mainloop;
		329
		330	my $busy = 1;
		331	my @res;
		332
		333	(async {
		334	@res = eval { $job->() };
		335	warn $@ if $@;
		336	undef $busy;
		337	})->prio (Coro::PRIO_MAX);
		338
		339	while ($busy) {
		340	Coro::cede or Event::one_event;
		341	}
		342
		343	wantarray ? @res : $res[0]
		344	} else {
		345	# we are in another coroutine, how wonderful, everything just works
		346
		347	$job->()
		348	}
		349	}
		350
		351	=item $coro = cf::async_ext { BLOCK }
		352
		353	Like async, but this coro is automatically being canceled when the
		354	extension calling this is being unloaded.
		355
		356	=cut
		357
		358	sub async_ext(&) {
		359	my $cb = shift;
		360
		361	my $coro = &Coro::async ($cb);
		362
		363	$coro->on_destroy (sub {
		364	delete $EXT_CORO{$coro+0};
		365	});
		366	$EXT_CORO{$coro+0} = $coro;
		367
		368	$coro
		369	}
		370
		371	sub write_runtime {
		372	my $runtime = "$LOCALDIR/runtime";
		373
		374	# first touch the runtime file to show we are still running:
		375	# the fsync below can take a very very long time.
		376
		377	warn "touching runtime...\n";#d#
		378	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		379	utime undef, undef, $fh;
		380	}
		381
		382	my $guard = cf::lock_acquire "write_runtime";
		383
		384	warn "starting to write runtime...\n";#d#
		385	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		386	or return;
		387
		388	my $value = $cf::RUNTIME + 90 + 10;
		389	# 10 is the runtime save interval, for a monotonic clock
		390	# 60 allows for the watchdog to kill the server.
		391
		392	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		393	and return;
		394
		395	# always fsync - this file is important
		396	aio_fsync $fh
		397	and return;
		398
		399	# touch it again to show we are up-to-date
		400	utime undef, undef, $fh;
		401
		402	close $fh
		403	or return;
		404
		405	aio_rename "$runtime~", $runtime
		406	and return;
		407
		408	warn "... done writing runtime.\n";#d#
		409
		410	1
		411	}
		412
		413	=item cf::datalog type => key => value, ...
		414
		415	Log a datalog packet of the given type with the given key-value pairs.
		416
		417	=cut
		418
		419	sub datalog($@) {
		420	my ($type, %kv) = @_;
		421	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		422	}
		423
		424	=back
		425
		426	=cut
91		427
92	#############################################################################	428	#############################################################################
93	# utility functions
94		429
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	430	=head2 ATTACHABLE OBJECTS
96		431
97	sub from_json($) {	432	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	433	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	434	to it. All such attachable objects support the following methods.
100	}
101		435
102	sub to_json($) {	436	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	437	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	438	crossfire+).
105	}
106		439
107	#############################################################################	440	=over 4
108	# "new" plug-in system
109		441
110	=item $object->attach ($attachment, key => $value...)	442	=item $attachable->attach ($attachment, key => $value...)
111		443
112	Attach a pre-registered attachment to an object.	444	=item $attachable->detach ($attachment)
113		445
114	=item $player->attach ($attachment, key => $value...)	446	Attach/detach a pre-registered attachment to a specific object and give it
		447	the specified key/value pairs as arguments.
115		448
116	Attach a pre-registered attachment to a player.	449	Example, attach a minesweeper attachment to the given object, making it a
		450	10x10 minesweeper game:
117		451
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	452	$obj->attach (minesweeper => width => 10, height => 10);
119		453
120	Attach a pre-registered attachment to a map.	454	=item $bool = $attachable->attached ($name)
121		455
122	=item cf::attach_global ...	456	Checks wether the named attachment is currently attached to the object.
123		457
124	Attach handlers for global events.	458	=item cf::CLASS->attach ...
125		459
126	This and all following C<attach_*>-functions expect any number of the	460	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	461
		462	Define an anonymous attachment and attach it to all objects of the given
		463	CLASS. See the next function for an explanation of its arguments.
		464
		465	You can attach to global events by using the C<cf::global> class.
		466
		467	Example, log all player logins:
		468
		469	cf::player->attach (
		470	on_login => sub {
		471	my ($pl) = @_;
		472	...
		473	},
		474	);
		475
		476	Example, attach to the jeweler skill:
		477
		478	cf::object->attach (
		479	type => cf::SKILL,
		480	subtype => cf::SK_JEWELER,
		481	on_use_skill => sub {
		482	my ($sk, $ob, $part, $dir, $msg) = @_;
		483	...
		484	},
		485	);
		486
		487	=item cf::CLASS::attachment $name, ...
		488
		489	Register an attachment by C<$name> through which attachable objects of the
		490	given CLASS can refer to this attachment.
		491
		492	Some classes such as crossfire maps and objects can specify attachments
		493	that are attached at load/instantiate time, thus the need for a name.
		494
		495	These calls expect any number of the following handler/hook descriptions:
128		496
129	=over 4	497	=over 4
130		498
131	=item prio => $number	499	=item prio => $number
132		500
…		…
134	by another C<prio> setting). Lower priority handlers get executed	502	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	503	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	504	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	505	unless you know what you are doing.
138		506
		507	=item type => $type
		508
		509	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		510	given type of objects only (the additional parameter C<subtype> can be
		511	used to further limit to the given subtype).
		512
139	=item on_I<event> => \&cb	513	=item on_I<event> => \&cb
140		514
141	Call the given code reference whenever the named event happens (event is	515	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	516	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	517	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	526	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	527	object/class are recognised.
154		528
155	=back	529	=back
156		530
157	=item cf::attach_to_type $object_type, $subtype, ...	531	Example, define an attachment called "sockpuppet" that calls the given
		532	event handler when a monster attacks:
158		533
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	534	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	535	on_skill_attack => sub {
161	type.	536	my ($self, $victim) = @_;
		537	...
		538	}
		539	}
162		540
163	=item cf::attach_to_objects ...	541	=item $attachable->valid
164		542
165	Attach handlers to all objects. Do not use this except for debugging or	543	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	544	C-level object still exists. If you try to access an object that has no
167	the game.	545	valid C counterpart anymore you get an exception at runtime. This method
168		546	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	547	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		548
179	=cut	549	=cut
180		550
181	# the following variables are defined in .xs and must not be re-created	551	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	552	our @CB_GLOBAL = (); # registry for all global events
		553	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	554	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	555	our @CB_PLAYER = ();
		556	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	557	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	558	our @CB_MAP = ();
187		559
188	my %attachment;	560	my %attachment;
189		561
		562	sub cf::attachable::thawer_merge {
		563	# simply override everything except _meta
		564	local $_[0]{_meta};
		565	%{$_[0]} = %{$_[1]};
		566	}
		567
190	sub _attach_cb($\%$$$) {	568	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	569	my ($registry, $event, $prio, $cb) = @_;
192		570
193	use sort 'stable';	571	use sort 'stable';
194		572
195	$cb = [$prio, $cb];	573	$cb = [$prio, $cb];
196		574
197	@{$registry->[$event]} = sort	575	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	576	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	577	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	578	}
		579
		580	# hack
		581	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		582
204	# attach handles attaching event callbacks	583	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	584	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	585	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	586	sub _attach {
208	my ($registry, $klass, @arg) = @_;	587	my ($registry, $klass, @arg) = @_;
209		588
		589	my $object_type;
210	my $prio = 0;	590	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	591	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		592
		593	#TODO: get rid of this hack
		594	if ($attachable_klass{$klass}) {
		595	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		596	}
218		597
219	while (@arg) {	598	while (@arg) {
220	my $type = shift @arg;	599	my $type = shift @arg;
221		600
222	if ($type eq "prio") {	601	if ($type eq "prio") {
223	$prio = shift @arg;	602	$prio = shift @arg;
224		603
		604	} elsif ($type eq "type") {
		605	$object_type = shift @arg;
		606	$registry = $CB_TYPE[$object_type] ||= [];
		607
		608	} elsif ($type eq "subtype") {
		609	defined $object_type or Carp::croak "subtype specified without type";
		610	my $object_subtype = shift @arg;
		611	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		612
225	} elsif ($type eq "package") {	613	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	614	my $pkg = shift @arg;
227		615
228	while (my ($name, $id) = each %cb_id) {	616	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	617	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	618	_attach_cb $registry, $id, $prio, $cb;
231	}	619	}
232	}	620	}
233		621
234	} elsif (exists $cb_id{$type}) {	622	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	623	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		624
237	} elsif (ref $type) {	625	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	626	warn "attaching objects not supported, ignoring.\n";
239		627
240	} else {	628	} else {
241	shift @arg;	629	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	630	warn "attach argument '$type' not supported, ignoring.\n";
243	}	631	}
244	}	632	}
245
246	\%undo
247	}	633	}
248		634
249	sub _attach_attachment {	635	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	636	my ($obj, $name, %arg) = @_;
251		637
252	my $res;	638	return if exists $obj->{_attachment}{$name};
253		639
254	if (my $attach = $attachment{$name}) {	640	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	641	my $registry = $obj->registry;
256		642
257	for (@$attach) {	643	for (@$attach) {
258	my ($klass, @attach) = @$_;	644	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	645	_attach $registry, $klass, @attach;
260	}	646	}
261		647
262	$obj->{$name} = \%arg;	648	$obj->{$name} = \%arg;
263	} else {	649	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	650	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	651	}
266		652
267	push @{$obj->{_attachment}}, $name;	653	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	654	}
272		655
273	sub cf::object::attach {	656	sub cf::attachable::attach {
		657	if (ref $_[0]) {
		658	_object_attach @_;
		659	} else {
		660	_attach shift->_attach_registry, @_;
		661	}
		662	};
		663
		664	# all those should be optimised
		665	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	666	my ($obj, $name) = @_;
275		667
276	_attach_attachment $obj, $name, %arg;	668	if (ref $obj) {
277	}	669	delete $obj->{_attachment}{$name};
		670	reattach ($obj);
		671	} else {
		672	Carp::croak "cannot, currently, detach class attachments";
		673	}
		674	};
278		675
279	sub cf::player::attach {	676	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	677	my ($obj, $name) = @_;
281		678
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	679	exists $obj->{_attachment}{$name}
283	}	680	}
284		681
285	sub cf::map::attach {	682	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	683	eval "#line " . __LINE__ . " 'cf.pm'
		684	sub cf::\L$klass\E::_attach_registry {
		685	(\\\@CB_$klass, KLASS_$klass)
		686	}
287		687
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	688	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	689	my \$name = shift;
316		690
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	691	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		692	}
		693	";
		694	die if $@;
318	}	695	}
319		696
320	our $override;	697	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	698	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		699
…		…
336	for (@$callbacks) {	713	for (@$callbacks) {
337	eval { &{$_->[1]} };	714	eval { &{$_->[1]} };
338		715
339	if ($@) {	716	if ($@) {
340	warn "$@";	717	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	718	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	719	override;
343	}	720	}
344		721
345	return 1 if $override;	722	return 1 if $override;
346	}	723	}
347		724
348	0	725	0
349	}	726	}
		727
		728	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		729
		730	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		731
		732	Generate an object-specific event with the given arguments.
		733
		734	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		735	removed in future versions), and there is no public API to access override
		736	results (if you must, access C<@cf::invoke_results> directly).
		737
		738	=back
		739
		740	=cut
350		741
351	#############################################################################	742	#############################################################################
352	# object support	743	# object support
353		744
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361	attach $obj, $name, %{$args || {} };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	745	sub reattach {
		746	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	747	my ($obj) = @_;
		748
		749	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		750
368	my $registry = $obj->registry;	751	my $registry = $obj->registry;
369		752
370	@$registry = ();	753	@$registry = ();
371		754
		755	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		756
372	for my $name (@{ $obj->{_attachment} }) {	757	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	758	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	759	for (@$attach) {
375	my ($klass, @attach) = @$_;	760	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	761	_attach $registry, $klass, @attach;
377	}	762	}
378	} else {	763	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	764	warn "object uses attachment '$name' that is not available, postponing.\n";
380	}	765	}
381	}	766	}
382	}	767	}
383		768
		769	cf::attachable->attach (
		770	prio => -1000000,
		771	on_instantiate => sub {
		772	my ($obj, $data) = @_;
		773
		774	$data = from_json $data;
		775
		776	for (@$data) {
		777	my ($name, $args) = @$_;
		778
		779	$obj->attach ($name, %{$args || {} });
		780	}
		781	},
		782	on_reattach => \&reattach,
		783	on_clone => sub {
		784	my ($src, $dst) = @_;
		785
		786	@{$dst->registry} = @{$src->registry};
		787
		788	%$dst = %$src;
		789
		790	%{$dst->{_attachment}} = %{$src->{_attachment}}
		791	if exists $src->{_attachment};
		792	},
		793	);
		794
384	sub object_freezer_save {	795	sub object_freezer_save {
385	my ($filename, $objs) = @_;	796	my ($filename, $rdata, $objs) = @_;
386		797
387	$filename .= ".pst";	798	sync_job {
		799	if (length $$rdata) {
		800	warn sprintf "saving %s (%d,%d)\n",
		801	$filename, length $$rdata, scalar @$objs;
388		802
389	if (@$objs) {	803	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	804	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	805	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	806	aio_fsync $fh if $cf::USE_FSYNC;
393	close $fh;	807	close $fh;
		808
		809	if (@$objs) {
		810	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		811	chmod SAVE_MODE, $fh;
		812	my $data = Storable::nfreeze { version => 1, objs => $objs };
		813	aio_write $fh, 0, (length $data), $data, 0;
		814	aio_fsync $fh if $cf::USE_FSYNC;
		815	close $fh;
		816	aio_rename "$filename.pst~", "$filename.pst";
		817	}
		818	} else {
		819	aio_unlink "$filename.pst";
		820	}
		821
394	rename "$filename~", $filename;	822	aio_rename "$filename~", $filename;
		823	} else {
		824	warn "FATAL: $filename~: $!\n";
		825	}
395	} else {	826	} else {
396	unlink $filename;	827	aio_unlink $filename;
		828	aio_unlink "$filename.pst";
		829	}
397	}	830	}
		831	}
		832
		833	sub object_freezer_as_string {
		834	my ($rdata, $objs) = @_;
		835
		836	use Data::Dumper;
		837
		838	$$rdata . Dumper $objs
398	}	839	}
399		840
400	sub object_thawer_load {	841	sub object_thawer_load {
401	my ($filename) = @_;	842	my ($filename) = @_;
402		843
403	open my $fh, "<:raw:perlio", "$filename.pst"	844	my ($data, $av);
		845
		846	(aio_load $filename, $data) >= 0
404	or return;	847	or return;
405		848
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	849	unless (aio_stat "$filename.pst") {
407	}	850	(aio_load "$filename.pst", $av) >= 0
408		851	or return;
409	attach_to_objects	852	$av = eval { (Storable::thaw $av)->{objs} };
410	prio => -1000000,
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	853	}
421	;	854
		855	warn sprintf "loading %s (%d)\n",
		856	$filename, length $data, scalar @{$av || []};#d#
		857	return ($data, $av);
		858	}
422		859
423	#############################################################################	860	#############################################################################
424	# old plug-in events	861	# command handling &c
425		862
426	sub inject_event {	863	=item cf::register_command $name => \&callback($ob,$args);
427	my $extension = shift;
428	my $event_code = shift;
429		864
430	my $cb = $hook[$event_code]{$extension}	865	Register a callback for execution when the client sends the user command
431	or return;	866	$name.
432		867
433	&$cb	868	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		869
455	sub register_command {	870	sub register_command {
456	my ($name, $time, $cb) = @_;	871	my ($name, $cb) = @_;
457		872
458	my $caller = caller;	873	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	874	#warn "registering command '$name/$time' to '$caller'";
460		875
461	push @{ $command{$name} }, [$time, $cb, $caller];	876	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	877	}
		878
		879	=item cf::register_extcmd $name => \&callback($pl,$packet);
		880
		881	Register a callbackf ro execution when the client sends an extcmd packet.
		882
		883	If the callback returns something, it is sent back as if reply was being
		884	called.
		885
		886	=cut
464		887
465	sub register_extcmd {	888	sub register_extcmd {
466	my ($name, $cb) = @_;	889	my ($name, $cb) = @_;
467		890
468	my $caller = caller;	891	$EXTCMD{$name} = $cb;
469	#warn "registering extcmd '$name' to '$caller'";
470
471	$extcmd{$name} = [$cb, $caller];
472	}	892	}
473		893
474	sub register {	894	cf::player->attach (
475	my ($base, $pkg) = @_;	895	on_command => sub {
		896	my ($pl, $name, $params) = @_;
476		897
477	#TODO	898	my $cb = $COMMAND{$name}
478	}	899	or return;
		900
		901	for my $cmd (@$cb) {
		902	$cmd->[1]->($pl->ob, $params);
		903	}
		904
		905	cf::override;
		906	},
		907	on_extcmd => sub {
		908	my ($pl, $buf) = @_;
		909
		910	my $msg = eval { from_json $buf };
		911
		912	if (ref $msg) {
		913	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		914	if (my %reply = $cb->($pl, $msg)) {
		915	$pl->ext_reply ($msg->{msgid}, %reply);
		916	}
		917	}
		918	} else {
		919	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		920	}
		921
		922	cf::override;
		923	},
		924	);
479		925
480	sub load_extension {	926	sub load_extension {
481	my ($path) = @_;	927	my ($path) = @_;
482		928
483	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	929	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
484	my $base = $1;	930	my $base = $1;
485	my $pkg = $1;	931	my $pkg = $1;
486	$pkg =~ s/[^[:word:]]/_/g;	932	$pkg =~ s/[^[:word:]]/_/g;
487	$pkg = "ext::$pkg";	933	$pkg = "ext::$pkg";
488		934
489	warn "loading '$path' into '$pkg'\n";	935	warn "... loading '$path' into '$pkg'\n";
490		936
491	open my $fh, "<:utf8", $path	937	open my $fh, "<:utf8", $path
492	or die "$path: $!";	938	or die "$path: $!";
493		939
494	my $source =	940	my $source =
495	"package $pkg; use strict; use utf8;\n"	941	"package $pkg; use strict; use utf8;\n"
496	. "#line 1 \"$path\"\n{\n"	942	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })	943	. (do { local $/; <$fh> })
498	. "\n};\n1";	944	. "\n};\n1";
499		945
500	eval $source	946	unless (eval $source) {
501	or die "$path: $@";	947	my $msg = $@ ? "$path: $@\n"
502		948	: "extension disabled.\n";
503	push @exts, $pkg;	949	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
504	$ext_pkg{$base} = $pkg;	950	warn $@;
505		951	warn "mandatory extension failed to load, exiting.\n";
506	# no strict 'refs';	952	exit 1;
507	# @{"$pkg\::ISA"} = ext::;	953	}
508		954	die $@;
509	register $base, $pkg;
510	}
511
512	sub unload_extension {
513	my ($pkg) = @_;
514
515	warn "removing extension $pkg\n";
516
517	# remove hooks
518	#TODO
519	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};
521	# }	955	}
522		956
523	# remove commands	957	push @EXTS, $pkg;
524	for my $name (keys %command) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
526
527	if (@cb) {
528	$command{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};
533	}
534	}
535
536	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
538	delete $extcmd{$name};
539	}
540
541	if (my $cb = $pkg->can ("unload")) {
542	eval {
543	$cb->($pkg);
544	1
545	} or warn "$pkg unloaded, but with errors: $@";
546	}
547
548	Symbol::delete_package $pkg;
549	}	958	}
550		959
551	sub load_extensions {	960	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {	961	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;	962	next unless -r $ext;
556	eval {	963	eval {
557	load_extension $ext;	964	load_extension $ext;
558	1	965	1
559	} or warn "$ext not loaded: $@";	966	} or warn "$ext not loaded: $@";
560	}	967	}
561	}	968	}
562		969
563	sub _perl_reload(&) {	970	#############################################################################
		971
		972	=head2 CORE EXTENSIONS
		973
		974	Functions and methods that extend core crossfire objects.
		975
		976	=cut
		977
		978	package cf::player;
		979
		980	use Coro::AIO;
		981
		982	=head3 cf::player
		983
		984	=over 4
		985
		986	=item cf::player::find $login
		987
		988	Returns the given player object, loading it if necessary (might block).
		989
		990	=cut
		991
		992	sub playerdir($) {
		993	"$PLAYERDIR/"
		994	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		995	}
		996
		997	sub path($) {
		998	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		999
		1000	(playerdir $login) . "/playerdata"
		1001	}
		1002
		1003	sub find_active($) {
		1004	$cf::PLAYER{$_[0]}
		1005	and $cf::PLAYER{$_[0]}->active
		1006	and $cf::PLAYER{$_[0]}
		1007	}
		1008
		1009	sub exists($) {
		1010	my ($login) = @_;
		1011
		1012	$cf::PLAYER{$login}
		1013	or cf::sync_job { !aio_stat path $login }
		1014	}
		1015
		1016	sub find($) {
		1017	return $cf::PLAYER{$_[0]} || do {
		1018	my $login = $_[0];
		1019
		1020	my $guard = cf::lock_acquire "user_find:$login";
		1021
		1022	$cf::PLAYER{$_[0]} || do {
		1023	# rename old playerfiles to new ones
		1024	#TODO: remove when no longer required
		1025	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1026	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1027	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1028	aio_unlink +(playerdir $login) . "/$login.pl";
		1029
		1030	my $pl = load_pl path $login
		1031	or return;
		1032	$cf::PLAYER{$login} = $pl
		1033	}
		1034	}
		1035	}
		1036
		1037	sub save($) {
		1038	my ($pl) = @_;
		1039
		1040	return if $pl->{deny_save};
		1041
		1042	my $path = path $pl;
		1043	my $guard = cf::lock_acquire "user_save:$path";
		1044
		1045	return if $pl->{deny_save};
		1046
		1047	aio_mkdir playerdir $pl, 0770;
		1048	$pl->{last_save} = $cf::RUNTIME;
		1049
		1050	$pl->save_pl ($path);
		1051	Coro::cede;
		1052	}
		1053
		1054	sub new($) {
		1055	my ($login) = @_;
		1056
		1057	my $self = create;
		1058
		1059	$self->ob->name ($login);
		1060	$self->{deny_save} = 1;
		1061
		1062	$cf::PLAYER{$login} = $self;
		1063
		1064	$self
		1065	}
		1066
		1067	=item $pl->quit_character
		1068
		1069	Nukes the player without looking back. If logged in, the connection will
		1070	be destroyed. May block for a long time.
		1071
		1072	=cut
		1073
		1074	sub quit_character {
		1075	my ($pl) = @_;
		1076
		1077	my $name = $pl->ob->name;
		1078
		1079	$pl->{deny_save} = 1;
		1080	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1081
		1082	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1083	$pl->deactivate;
		1084	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1085	$pl->ns->destroy if $pl->ns;
		1086
		1087	my $path = playerdir $pl;
		1088	my $temp = "$path~$cf::RUNTIME~deleting~";
		1089	aio_rename $path, $temp;
		1090	delete $cf::PLAYER{$pl->ob->name};
		1091	$pl->destroy;
		1092
		1093	my $prefix = qr<^~\Q$name\E/>;
		1094
		1095	# nuke player maps
		1096	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1097
		1098	IO::AIO::aio_rmtree $temp;
		1099	}
		1100
		1101	=item $pl->kick
		1102
		1103	Kicks a player out of the game. This destroys the connection.
		1104
		1105	=cut
		1106
		1107	sub kick {
		1108	my ($pl, $kicker) = @_;
		1109
		1110	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1111	$pl->killer ("kicked");
		1112	$pl->ns->destroy;
		1113	}
		1114
		1115	=item cf::player::list_logins
		1116
		1117	Returns am arrayref of all valid playernames in the system, can take a
		1118	while and may block, so not sync_job-capable, ever.
		1119
		1120	=cut
		1121
		1122	sub list_logins {
		1123	my $dirs = aio_readdir $PLAYERDIR
		1124	or return [];
		1125
		1126	my @logins;
		1127
		1128	for my $login (@$dirs) {
		1129	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1130	aio_read $fh, 0, 512, my $buf, 0 or next;
		1131	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1132
		1133	utf8::decode $login;
		1134	push @logins, $login;
		1135	}
		1136
		1137	\@logins
		1138	}
		1139
		1140	=item $player->maps
		1141
		1142	Returns an arrayref of map paths that are private for this
		1143	player. May block.
		1144
		1145	=cut
		1146
		1147	sub maps($) {
		1148	my ($pl) = @_;
		1149
		1150	$pl = ref $pl ? $pl->ob->name : $pl;
		1151
		1152	my $files = aio_readdir playerdir $pl
		1153	or return;
		1154
		1155	my @paths;
		1156
		1157	for (@$files) {
		1158	utf8::decode $_;
		1159	next if /\.(?:pl|pst)$/;
		1160	next unless /^$PATH_SEP/o;
		1161
		1162	push @paths, cf::map::normalise "~$pl/$_";
		1163	}
		1164
		1165	\@paths
		1166	}
		1167
		1168	=item $player->ext_reply ($msgid, %msg)
		1169
		1170	Sends an ext reply to the player.
		1171
		1172	=cut
		1173
		1174	sub ext_reply($$%) {
		1175	my ($self, $id, %msg) = @_;
		1176
		1177	$msg{msgid} = $id;
		1178
		1179	$self->send ("ext " . cf::to_json \%msg);
		1180	}
		1181
		1182	=item $player->ext_event ($type, %msg)
		1183
		1184	Sends an ext event to the client.
		1185
		1186	=cut
		1187
		1188	sub ext_event($$%) {
		1189	my ($self, $type, %msg) = @_;
		1190
		1191	$self->ns->ext_event ($type, %msg);
		1192	}
		1193
		1194	=head3 cf::region
		1195
		1196	=over 4
		1197
		1198	=cut
		1199
		1200	package cf::region;
		1201
		1202	=item cf::region::find_by_path $path
		1203
		1204	Tries to decuce the probable region for a map knowing only its path.
		1205
		1206	=cut
		1207
		1208	sub find_by_path($) {
		1209	my ($path) = @_;
		1210
		1211	my ($match, $specificity);
		1212
		1213	for my $region (list) {
		1214	if ($region->match && $path =~ $region->match) {
		1215	($match, $specificity) = ($region, $region->specificity)
		1216	if $region->specificity > $specificity;
		1217	}
		1218	}
		1219
		1220	$match
		1221	}
		1222
		1223	=back
		1224
		1225	=head3 cf::map
		1226
		1227	=over 4
		1228
		1229	=cut
		1230
		1231	package cf::map;
		1232
		1233	use Fcntl;
		1234	use Coro::AIO;
		1235
		1236	use overload
		1237	'""' => \&as_string,
		1238	fallback => 1;
		1239
		1240	our $MAX_RESET = 3600;
		1241	our $DEFAULT_RESET = 3000;
		1242
		1243	sub generate_random_map {
		1244	my ($self, $rmp) = @_;
		1245	# mit "rum" bekleckern, nicht
		1246	$self->_create_random_map (
		1247	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1248	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1249	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1250	$rmp->{exit_on_final_map},
		1251	$rmp->{xsize}, $rmp->{ysize},
		1252	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1253	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1254	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1255	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1256	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1257	(cf::region::find $rmp->{region}), $rmp->{custom}
		1258	)
		1259	}
		1260
		1261	=item cf::map->register ($regex, $prio)
		1262
		1263	Register a handler for the map path matching the given regex at the
		1264	givne priority (higher is better, built-in handlers have priority 0, the
		1265	default).
		1266
		1267	=cut
		1268
		1269	sub register {
		1270	my (undef, $regex, $prio) = @_;
		1271	my $pkg = caller;
		1272
		1273	no strict;
		1274	push @{"$pkg\::ISA"}, __PACKAGE__;
		1275
		1276	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1277	}
		1278
		1279	# also paths starting with '/'
		1280	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1281
		1282	sub thawer_merge {
		1283	my ($self, $merge) = @_;
		1284
		1285	# we have to keep some variables in memory intact
		1286	local $self->{path};
		1287	local $self->{load_path};
		1288	local $self->{deny_save};
		1289	local $self->{deny_reset};
		1290
		1291	$self->SUPER::thawer_merge ($merge);
		1292	}
		1293
		1294	sub normalise {
		1295	my ($path, $base) = @_;
		1296
		1297	$path = "$path"; # make sure its a string
		1298
		1299	$path =~ s/\.map$//;
		1300
		1301	# map plan:
		1302	#
		1303	# /! non-realised random map exit (special hack!)
		1304	# {... are special paths that are not being touched
		1305	# ?xxx/... are special absolute paths
		1306	# ?random/... random maps
		1307	# /... normal maps
		1308	# ~user/... per-player map of a specific user
		1309
		1310	$path =~ s/$PATH_SEP/\//go;
		1311
		1312	# treat it as relative path if it starts with
		1313	# something that looks reasonable
		1314	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1315	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1316
		1317	$base =~ s{[^/]+/?$}{};
		1318	$path = "$base/$path";
		1319	}
		1320
		1321	for ($path) {
		1322	redo if s{//}{/};
		1323	redo if s{/\.?/}{/};
		1324	redo if s{/[^/]+/\.\./}{/};
		1325	}
		1326
		1327	$path
		1328	}
		1329
		1330	sub new_from_path {
		1331	my (undef, $path, $base) = @_;
		1332
		1333	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1334
		1335	$path = normalise $path, $base;
		1336
		1337	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1338	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1339	my $self = bless cf::map::new, $pkg;
		1340	$self->{path} = $path; $self->path ($path);
		1341	$self->init; # pass $1 etc.
		1342	return $self;
		1343	}
		1344	}
		1345
		1346	Carp::carp "unable to resolve path '$path' (base '$base').";
		1347	()
		1348	}
		1349
		1350	sub init {
564	my ($msg) = @_;	1351	my ($self) = @_;
565		1352
566	$msg->("reloading...");	1353	$self
		1354	}
567		1355
568	eval {	1356	sub as_string {
569	# 1. cancel all watchers	1357	my ($self) = @_;
570	$_->cancel for Event::all_watchers;
571		1358
572	# 2. unload all extensions	1359	"$self->{path}"
573	for (@exts) {	1360	}
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577		1361
578	# 3. unload all modules loaded from $LIBDIR	1362	# the displayed name, this is a one way mapping
579	while (my ($k, $v) = each %INC) {	1363	sub visible_name {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1364	&as_string
		1365	}
581		1366
582	$msg->("removing <$k>");	1367	# the original (read-only) location
583	delete $INC{$k};	1368	sub load_path {
		1369	my ($self) = @_;
584		1370
585	$k =~ s/\.pm$//;	1371	"$MAPDIR/$self->{path}.map"
586	$k =~ s/\//::/g;	1372	}
587		1373
588	if (my $cb = $k->can ("unload_module")) {	1374	# the temporary/swap location
589	$cb->();	1375	sub save_path {
		1376	my ($self) = @_;
		1377
		1378	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1379	"$TMPDIR/$path.map"
		1380	}
		1381
		1382	# the unique path, undef == no special unique path
		1383	sub uniq_path {
		1384	my ($self) = @_;
		1385
		1386	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1387	"$UNIQUEDIR/$path"
		1388	}
		1389
		1390	# and all this just because we cannot iterate over
		1391	# all maps in C++...
		1392	sub change_all_map_light {
		1393	my ($change) = @_;
		1394
		1395	$_->change_map_light ($change)
		1396	for grep $_->outdoor, values %cf::MAP;
		1397	}
		1398
		1399	sub unlink_save {
		1400	my ($self) = @_;
		1401
		1402	utf8::encode (my $save = $self->save_path);
		1403	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1404	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1405	}
		1406
		1407	sub load_header_from($) {
		1408	my ($self, $path) = @_;
		1409
		1410	utf8::encode $path;
		1411	#aio_open $path, O_RDONLY, 0
		1412	# or return;
		1413
		1414	$self->_load_header ($path)
		1415	or return;
		1416
		1417	$self->{load_path} = $path;
		1418
		1419	1
		1420	}
		1421
		1422	sub load_header_orig {
		1423	my ($self) = @_;
		1424
		1425	$self->load_header_from ($self->load_path)
		1426	}
		1427
		1428	sub load_header_temp {
		1429	my ($self) = @_;
		1430
		1431	$self->load_header_from ($self->save_path)
		1432	}
		1433
		1434	sub prepare_temp {
		1435	my ($self) = @_;
		1436
		1437	$self->last_access ((delete $self->{last_access})
		1438	|| $cf::RUNTIME); #d#
		1439	# safety
		1440	$self->{instantiate_time} = $cf::RUNTIME
		1441	if $self->{instantiate_time} > $cf::RUNTIME;
		1442	}
		1443
		1444	sub prepare_orig {
		1445	my ($self) = @_;
		1446
		1447	$self->{load_original} = 1;
		1448	$self->{instantiate_time} = $cf::RUNTIME;
		1449	$self->last_access ($cf::RUNTIME);
		1450	$self->instantiate;
		1451	}
		1452
		1453	sub load_header {
		1454	my ($self) = @_;
		1455
		1456	if ($self->load_header_temp) {
		1457	$self->prepare_temp;
		1458	} else {
		1459	$self->load_header_orig
		1460	or return;
		1461	$self->prepare_orig;
		1462	}
		1463
		1464	$self->default_region (cf::region::find_by_path $self->{path})
		1465	unless $self->default_region;
		1466
		1467	1
		1468	}
		1469
		1470	sub find;
		1471	sub find {
		1472	my ($path, $origin) = @_;
		1473
		1474	$path = normalise $path, $origin && $origin->path;
		1475
		1476	cf::lock_wait "map_find:$path";
		1477
		1478	$cf::MAP{$path} || do {
		1479	my $guard = cf::lock_acquire "map_find:$path";
		1480	my $map = new_from_path cf::map $path
		1481	or return;
		1482
		1483	$map->{last_save} = $cf::RUNTIME;
		1484
		1485	$map->load_header
		1486	or return;
		1487
		1488	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1489	# doing this can freeze the server in a sync job, obviously
		1490	#$cf::WAIT_FOR_TICK->wait;
		1491	$map->reset;
		1492	undef $guard;
		1493	return find $path;
		1494	}
		1495
		1496	$cf::MAP{$path} = $map
		1497	}
		1498	}
		1499
		1500	sub pre_load { }
		1501	sub post_load { }
		1502
		1503	sub load {
		1504	my ($self) = @_;
		1505
		1506	local $self->{deny_reset} = 1; # loading can take a long time
		1507
		1508	my $path = $self->{path};
		1509
		1510	{
		1511	my $guard = cf::lock_acquire "map_load:$path";
		1512
		1513	return if $self->in_memory != cf::MAP_SWAPPED;
		1514
		1515	$self->in_memory (cf::MAP_LOADING);
		1516
		1517	$self->alloc;
		1518
		1519	$self->pre_load;
		1520	Coro::cede;
		1521
		1522	$self->_load_objects ($self->{load_path}, 1)
		1523	or return;
		1524
		1525	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1526	if delete $self->{load_original};
		1527
		1528	if (my $uniq = $self->uniq_path) {
		1529	utf8::encode $uniq;
		1530	if (aio_open $uniq, O_RDONLY, 0) {
		1531	$self->clear_unique_items;
		1532	$self->_load_objects ($uniq, 0);
590	}	1533	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601		1534	}
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604		1535
605	# don't, removes xs symbols, too,	1536	Coro::cede;
606	# and global variables created in xs	1537	# now do the right thing for maps
607	#Symbol::delete_package __PACKAGE__;	1538	$self->link_multipart_objects;
		1539	$self->difficulty ($self->estimate_difficulty)
		1540	unless $self->difficulty;
		1541	Coro::cede;
608		1542
609	# 7. reload cf.pm	1543	unless ($self->{deny_activate}) {
610	$msg->("reloading cf.pm");	1544	$self->decay_objects;
611	require cf;	1545	$self->fix_auto_apply;
		1546	$self->update_buttons;
		1547	Coro::cede;
		1548	$self->set_darkness_map;
		1549	Coro::cede;
		1550	$self->activate;
		1551	}
		1552
		1553	$self->in_memory (cf::MAP_IN_MEMORY);
		1554	}
		1555
		1556	$self->post_load;
		1557	}
		1558
		1559	sub customise_for {
		1560	my ($self, $ob) = @_;
		1561
		1562	return find "~" . $ob->name . "/" . $self->{path}
		1563	if $self->per_player;
		1564
		1565	$self
		1566	}
		1567
		1568	# find and load all maps in the 3x3 area around a map
		1569	sub load_diag {
		1570	my ($map) = @_;
		1571
		1572	my @diag; # diagonal neighbours
		1573
		1574	for (0 .. 3) {
		1575	my $neigh = $map->tile_path ($_)
		1576	or next;
		1577	$neigh = find $neigh, $map
		1578	or next;
		1579	$neigh->load;
		1580
		1581	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1582	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1583	}
		1584
		1585	for (@diag) {
		1586	my $neigh = find @$_
		1587	or next;
		1588	$neigh->load;
		1589	}
		1590	}
		1591
		1592	sub find_sync {
		1593	my ($path, $origin) = @_;
		1594
		1595	cf::sync_job { find $path, $origin }
		1596	}
		1597
		1598	sub do_load_sync {
		1599	my ($map) = @_;
		1600
		1601	cf::sync_job { $map->load };
		1602	}
		1603
		1604	our %MAP_PREFETCH;
		1605	our $MAP_PREFETCHER = undef;
		1606
		1607	sub find_async {
		1608	my ($path, $origin) = @_;
		1609
		1610	$path = normalise $path, $origin && $origin->{path};
		1611
		1612	if (my $map = $cf::MAP{$path}) {
		1613	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1614	}
		1615
		1616	undef $MAP_PREFETCH{$path};
		1617	$MAP_PREFETCHER ||= cf::async {
		1618	while (%MAP_PREFETCH) {
		1619	for my $path (keys %MAP_PREFETCH) {
		1620	my $map = find $path
		1621	or next;
		1622	$map->load;
		1623
		1624	delete $MAP_PREFETCH{$path};
		1625	}
		1626	}
		1627	undef $MAP_PREFETCHER;
612	};	1628	};
613	$msg->($@) if $@;	1629	$MAP_PREFETCHER->prio (6);
614		1630
615	$msg->("reloaded");	1631	()
616	};	1632	}
617		1633
618	sub perl_reload() {	1634	sub save {
619	_perl_reload {	1635	my ($self) = @_;
620	warn $_[0];	1636
621	print "$_[0]\n";	1637	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1638
		1639	$self->{last_save} = $cf::RUNTIME;
		1640
		1641	return unless $self->dirty;
		1642
		1643	my $save = $self->save_path; utf8::encode $save;
		1644	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1645
		1646	$self->{load_path} = $save;
		1647
		1648	return if $self->{deny_save};
		1649
		1650	local $self->{last_access} = $self->last_access;#d#
		1651
		1652	cf::async {
		1653	$_->contr->save for $self->players;
622	};	1654	};
623	}
624		1655
625	register_command "perl-reload", 0, sub {	1656	if ($uniq) {
626	my ($who, $arg) = @_;	1657	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
627		1658	$self->_save_objects ($uniq, cf::IO_UNIQUES);
628	if ($who->flag (FLAG_WIZ)) {
629	_perl_reload {
630	warn $_[0];
631	$who->message ($_[0]);
632	};
633	}
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {
642	my ($pl, $buf) = @_;
643
644	my $msg = eval { from_json $buf };
645
646	if (ref $msg) {
647	if (my $cb = $extcmd{$msg->{msgtype}}) {
648	if (my %reply = $cb->[0]->($pl, $msg)) {
649	$pl->ext_reply ($msg->{msgid}, %reply);
650	}
651	}
652	} else {	1659	} else {
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1660	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
654	}
655
656	cf::override;
657	},	1661	}
658	;	1662	}
659		1663
660	#############################################################################	1664	sub swap_out {
661	# load/save/clean perl data associated with a map
662
663	*cf::mapsupport::on_clean = sub {
664	my ($map) = @_;	1665	my ($self) = @_;
665		1666
666	my $path = $map->tmpname;	1667	# save first because save cedes
667	defined $path or return;	1668	$self->save;
668		1669
669	unlink "$path.cfperl";	1670	my $lock = cf::lock_acquire "map_data:" . $self->path;
670	unlink "$path.pst";
671	};
672		1671
673	*cf::mapsupport::on_swapin =	1672	return if $self->players;
674	*cf::mapsupport::on_load = sub {	1673	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1674	return if $self->{deny_save};
		1675
		1676	$self->clear;
		1677	$self->in_memory (cf::MAP_SWAPPED);
		1678	}
		1679
		1680	sub reset_at {
675	my ($map) = @_;	1681	my ($self) = @_;
676		1682
677	my $path = $map->tmpname;	1683	# TODO: safety, remove and allow resettable per-player maps
678	$path = $map->path unless defined $path;	1684	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1685	return 1e99 if $self->{deny_reset};
679		1686
680	open my $fh, "<:raw", "$path.cfperl"	1687	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
681	or return; # no perl data	1688	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
682		1689
683	my $data = Storable::thaw do { local $/; <$fh> };	1690	$time + $to
684
685	$data->{version} <= 1
686	or return; # too new
687
688	$map->_set_obs ($data->{obs});
689	};
690
691	attach_to_maps prio => -10000, package => cf::mapsupport::;
692
693	#############################################################################
694	# load/save perl data associated with player->ob objects
695
696	sub all_objects(@) {
697	@_, map all_objects ($_->inv), @_
698	}	1691	}
699		1692
700	attach_to_players	1693	sub should_reset {
701	on_load => sub {	1694	my ($self) = @_;
702	my ($pl, $path) = @_;
703		1695
704	for my $o (all_objects $pl->ob) {	1696	$self->reset_at <= $cf::RUNTIME
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1697	}
706	$o->set_ob_key_value ("_perl_data");
707		1698
708	%$o = %{ Storable::thaw pack "H*", $value };	1699	sub reset {
709	}	1700	my ($self) = @_;
710	}	1701
		1702	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1703
		1704	return if $self->players;
		1705	return if $self->isa ("ext::map_per_player");#d#
		1706
		1707	warn "resetting map ", $self->path;#d#
		1708
		1709	$self->in_memory (cf::MAP_SWAPPED);
		1710
		1711	# need to save uniques path
		1712	unless ($self->{deny_save}) {
		1713	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1714
		1715	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1716	if $uniq;
711	},	1717	}
712	;
713		1718
714	#############################################################################	1719	delete $cf::MAP{$self->path};
715	# core extensions - in perl
716		1720
717	=item cf::player::exists $login	1721	$self->clear;
718		1722
719	Returns true when the given account exists.	1723	$_->clear_links_to ($self) for values %cf::MAP;
720		1724
721	=cut	1725	$self->unlink_save;
722		1726	$self->destroy;
723	sub cf::player::exists($) {
724	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	1727	}
727		1728
		1729	my $nuke_counter = "aaaa";
		1730
		1731	sub nuke {
		1732	my ($self) = @_;
		1733
		1734	delete $cf::MAP{$self->path};
		1735
		1736	$self->unlink_save;
		1737
		1738	bless $self, "cf::map";
		1739	delete $self->{deny_reset};
		1740	$self->{deny_save} = 1;
		1741	$self->reset_timeout (1);
		1742	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1743
		1744	$cf::MAP{$self->path} = $self;
		1745
		1746	$self->reset; # polite request, might not happen
		1747	}
		1748
		1749	=item cf::map::unique_maps
		1750
		1751	Returns an arrayref of paths of all shared maps that have
		1752	instantiated unique items. May block.
		1753
		1754	=cut
		1755
		1756	sub unique_maps() {
		1757	my $files = aio_readdir $UNIQUEDIR
		1758	or return;
		1759
		1760	my @paths;
		1761
		1762	for (@$files) {
		1763	utf8::decode $_;
		1764	next if /\.pst$/;
		1765	next unless /^$PATH_SEP/o;
		1766
		1767	push @paths, cf::map::normalise $_;
		1768	}
		1769
		1770	\@paths
		1771	}
		1772
		1773	package cf;
		1774
		1775	=back
		1776
		1777	=head3 cf::object
		1778
		1779	=cut
		1780
		1781	package cf::object;
		1782
		1783	=over 4
		1784
		1785	=item $ob->inv_recursive
		1786
		1787	Returns the inventory of the object _and_ their inventories, recursively.
		1788
		1789	=cut
		1790
		1791	sub inv_recursive_;
		1792	sub inv_recursive_ {
		1793	map { $_, inv_recursive_ $_->inv } @_
		1794	}
		1795
		1796	sub inv_recursive {
		1797	inv_recursive_ inv $_[0]
		1798	}
		1799
		1800	package cf;
		1801
		1802	=back
		1803
		1804	=head3 cf::object::player
		1805
		1806	=over 4
		1807
728	=item $player->reply ($npc, $msg[, $flags])	1808	=item $player_object->reply ($npc, $msg[, $flags])
729		1809
730	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1810	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
731	can be C<undef>. Does the right thing when the player is currently in a	1811	can be C<undef>. Does the right thing when the player is currently in a
732	dialogue with the given NPC character.	1812	dialogue with the given NPC character.
733		1813
734	=cut	1814	=cut
735		1815
736	# rough implementation of a future "reply" method that works	1816	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	1817	# with dialog boxes.
		1818	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	1819	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	1820	my ($self, $npc, $msg, $flags) = @_;
740		1821
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1822	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		1823
…		…
746	$msg = $npc->name . " says: $msg" if $npc;	1827	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	1828	$self->message ($msg, $flags);
748	}	1829	}
749	}	1830	}
750		1831
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	1832	=item $player_object->may ("access")
752		1833
753	Sends an ext reply to the player.	1834	Returns wether the given player is authorized to access resource "access"
		1835	(e.g. "command_wizcast").
754		1836
755	=cut	1837	=cut
756		1838
757	sub cf::player::ext_reply($$$%) {	1839	sub cf::object::player::may {
		1840	my ($self, $access) = @_;
		1841
		1842	$self->flag (cf::FLAG_WIZ) ||
		1843	(ref $cf::CFG{"may_$access"}
		1844	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1845	: $cf::CFG{"may_$access"})
		1846	}
		1847
		1848	=item $player_object->enter_link
		1849
		1850	Freezes the player and moves him/her to a special map (C<{link}>).
		1851
		1852	The player should be reasonably safe there for short amounts of time. You
		1853	I<MUST> call C<leave_link> as soon as possible, though.
		1854
		1855	Will never block.
		1856
		1857	=item $player_object->leave_link ($map, $x, $y)
		1858
		1859	Moves the player out of the special C<{link}> map onto the specified
		1860	map. If the map is not valid (or omitted), the player will be moved back
		1861	to the location he/she was before the call to C<enter_link>, or, if that
		1862	fails, to the emergency map position.
		1863
		1864	Might block.
		1865
		1866	=cut
		1867
		1868	sub link_map {
		1869	unless ($LINK_MAP) {
		1870	$LINK_MAP = cf::map::find "{link}"
		1871	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1872	$LINK_MAP->load;
		1873	}
		1874
		1875	$LINK_MAP
		1876	}
		1877
		1878	sub cf::object::player::enter_link {
		1879	my ($self) = @_;
		1880
		1881	$self->deactivate_recursive;
		1882
		1883	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1884
		1885	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1886	if $self->map;
		1887
		1888	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1889	}
		1890
		1891	sub cf::object::player::leave_link {
		1892	my ($self, $map, $x, $y) = @_;
		1893
		1894	my $link_pos = delete $self->{_link_pos};
		1895
		1896	unless ($map) {
		1897	# restore original map position
		1898	($map, $x, $y) = @{ $link_pos || [] };
		1899	$map = cf::map::find $map;
		1900
		1901	unless ($map) {
		1902	($map, $x, $y) = @$EMERGENCY_POSITION;
		1903	$map = cf::map::find $map
		1904	or die "FATAL: cannot load emergency map\n";
		1905	}
		1906	}
		1907
		1908	($x, $y) = (-1, -1)
		1909	unless (defined $x) && (defined $y);
		1910
		1911	# use -1 or undef as default coordinates, not 0, 0
		1912	($x, $y) = ($map->enter_x, $map->enter_y)
		1913	if $x <=0 && $y <= 0;
		1914
		1915	$map->load;
		1916	$map->load_diag;
		1917
		1918	return unless $self->contr->active;
		1919	$self->activate_recursive;
		1920
		1921	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1922	$self->enter_map ($map, $x, $y);
		1923	}
		1924
		1925	cf::player->attach (
		1926	on_logout => sub {
		1927	my ($pl) = @_;
		1928
		1929	# abort map switching before logout
		1930	if ($pl->ob->{_link_pos}) {
		1931	cf::sync_job {
		1932	$pl->ob->leave_link
		1933	};
		1934	}
		1935	},
		1936	on_login => sub {
		1937	my ($pl) = @_;
		1938
		1939	# try to abort aborted map switching on player login :)
		1940	# should happen only on crashes
		1941	if ($pl->ob->{_link_pos}) {
		1942	$pl->ob->enter_link;
		1943	(async {
		1944	$pl->ob->reply (undef,
		1945	"There was an internal problem at your last logout, "
		1946	. "the server will try to bring you to your intended destination in a second.",
		1947	cf::NDI_RED);
		1948	# we need this sleep as the login has a concurrent enter_exit running
		1949	# and this sleep increases chances of the player not ending up in scorn
		1950	Coro::Timer::sleep 1;
		1951	$pl->ob->leave_link;
		1952	})->prio (2);
		1953	}
		1954	},
		1955	);
		1956
		1957	=item $player_object->goto ($path, $x, $y)
		1958
		1959	=cut
		1960
		1961	sub cf::object::player::goto {
		1962	my ($self, $path, $x, $y) = @_;
		1963
		1964	$self->enter_link;
		1965
		1966	(async {
		1967	my $map = eval {
		1968	my $map = cf::map::find $path;
		1969	$map = $map->customise_for ($self) if $map;
		1970	$map
		1971	} or
		1972	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1973
		1974	$self->leave_link ($map, $x, $y);
		1975	})->prio (1);
		1976	}
		1977
		1978	=item $player_object->enter_exit ($exit_object)
		1979
		1980	=cut
		1981
		1982	sub parse_random_map_params {
		1983	my ($spec) = @_;
		1984
		1985	my $rmp = { # defaults
		1986	xsize => (cf::rndm 15, 40),
		1987	ysize => (cf::rndm 15, 40),
		1988	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1989	#layout => string,
		1990	};
		1991
		1992	for (split /\n/, $spec) {
		1993	my ($k, $v) = split /\s+/, $_, 2;
		1994
		1995	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1996	}
		1997
		1998	$rmp
		1999	}
		2000
		2001	sub prepare_random_map {
		2002	my ($exit) = @_;
		2003
		2004	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2005
		2006	# all this does is basically replace the /! path by
		2007	# a new random map path (?random/...) with a seed
		2008	# that depends on the exit object
		2009
		2010	my $rmp = parse_random_map_params $exit->msg;
		2011
		2012	if ($exit->map) {
		2013	$rmp->{region} = $exit->region->name;
		2014	$rmp->{origin_map} = $exit->map->path;
		2015	$rmp->{origin_x} = $exit->x;
		2016	$rmp->{origin_y} = $exit->y;
		2017	}
		2018
		2019	$rmp->{random_seed} ||= $exit->random_seed;
		2020
		2021	my $data = cf::to_json $rmp;
		2022	my $md5 = Digest::MD5::md5_hex $data;
		2023	my $meta = "$RANDOMDIR/$md5.meta";
		2024
		2025	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2026	aio_write $fh, 0, (length $data), $data, 0;
		2027	undef $fh;
		2028	aio_rename "$meta~", $meta;
		2029
		2030	$exit->slaying ("?random/$md5");
		2031	$exit->msg (undef);
		2032	}
		2033	}
		2034
		2035	sub cf::object::player::enter_exit {
		2036	my ($self, $exit) = @_;
		2037
		2038	return unless $self->type == cf::PLAYER;
		2039
		2040	if ($exit->slaying eq "/!") {
		2041	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2042	# the problem is that $exit might not survive long enough
		2043	# so it needs to be done right now, right here
		2044	cf::sync_job { prepare_random_map $exit };
		2045	}
		2046
		2047	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2048	my $hp = $exit->stats->hp;
		2049	my $sp = $exit->stats->sp;
		2050
		2051	$self->enter_link;
		2052
		2053	(async {
		2054	$self->deactivate_recursive; # just to be sure
		2055	unless (eval {
		2056	$self->goto ($slaying, $hp, $sp);
		2057
		2058	1;
		2059	}) {
		2060	$self->message ("Something went wrong deep within the crossfire server. "
		2061	. "I'll try to bring you back to the map you were before. "
		2062	. "Please report this to the dungeon master!",
		2063	cf::NDI_UNIQUE | cf::NDI_RED);
		2064
		2065	warn "ERROR in enter_exit: $@";
		2066	$self->leave_link;
		2067	}
		2068	})->prio (1);
		2069	}
		2070
		2071	=head3 cf::client
		2072
		2073	=over 4
		2074
		2075	=item $client->send_drawinfo ($text, $flags)
		2076
		2077	Sends a drawinfo packet to the client. Circumvents output buffering so
		2078	should not be used under normal circumstances.
		2079
		2080	=cut
		2081
		2082	sub cf::client::send_drawinfo {
		2083	my ($self, $text, $flags) = @_;
		2084
		2085	utf8::encode $text;
		2086	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2087	}
		2088
		2089	=item $client->ext_event ($type, %msg)
		2090
		2091	Sends an exti event to the client.
		2092
		2093	=cut
		2094
		2095	sub cf::client::ext_event($$%) {
758	my ($self, $id, %msg) = @_;	2096	my ($self, $type, %msg) = @_;
759		2097
760	$msg{msgid} = $id;	2098	$msg{msgtype} = "event_$type";
761
762	$self->send ("ext " . to_json \%msg);	2099	$self->send_packet ("ext " . cf::to_json \%msg);
763	}	2100	}
764		2101
765	#############################################################################	2102	=item $success = $client->query ($flags, "text", \&cb)
766	# map scripting support	2103
		2104	Queues a query to the client, calling the given callback with
		2105	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2106	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2107
		2108	Queries can fail, so check the return code. Or don't, as queries will become
		2109	reliable at some point in the future.
		2110
		2111	=cut
		2112
		2113	sub cf::client::query {
		2114	my ($self, $flags, $text, $cb) = @_;
		2115
		2116	return unless $self->state == ST_PLAYING
		2117	|| $self->state == ST_SETUP
		2118	|| $self->state == ST_CUSTOM;
		2119
		2120	$self->state (ST_CUSTOM);
		2121
		2122	utf8::encode $text;
		2123	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2124
		2125	$self->send_packet ($self->{query_queue}[0][0])
		2126	if @{ $self->{query_queue} } == 1;
		2127	}
		2128
		2129	cf::client->attach (
		2130	on_reply => sub {
		2131	my ($ns, $msg) = @_;
		2132
		2133	# this weird shuffling is so that direct followup queries
		2134	# get handled first
		2135	my $queue = delete $ns->{query_queue}
		2136	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2137
		2138	(shift @$queue)->[1]->($msg);
		2139	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2140
		2141	push @{ $ns->{query_queue} }, @$queue;
		2142
		2143	if (@{ $ns->{query_queue} } == @$queue) {
		2144	if (@$queue) {
		2145	$ns->send_packet ($ns->{query_queue}[0][0]);
		2146	} else {
		2147	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2148	}
		2149	}
		2150	},
		2151	);
		2152
		2153	=item $client->async (\&cb)
		2154
		2155	Create a new coroutine, running the specified callback. The coroutine will
		2156	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2157	or loss of connection).
		2158
		2159	=cut
		2160
		2161	sub cf::client::async {
		2162	my ($self, $cb) = @_;
		2163
		2164	my $coro = &Coro::async ($cb);
		2165
		2166	$coro->on_destroy (sub {
		2167	delete $self->{_coro}{$coro+0};
		2168	});
		2169
		2170	$self->{_coro}{$coro+0} = $coro;
		2171
		2172	$coro
		2173	}
		2174
		2175	cf::client->attach (
		2176	on_destroy => sub {
		2177	my ($ns) = @_;
		2178
		2179	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2180	},
		2181	);
		2182
		2183	=back
		2184
		2185
		2186	=head2 SAFE SCRIPTING
		2187
		2188	Functions that provide a safe environment to compile and execute
		2189	snippets of perl code without them endangering the safety of the server
		2190	itself. Looping constructs, I/O operators and other built-in functionality
		2191	is not available in the safe scripting environment, and the number of
		2192	functions and methods that can be called is greatly reduced.
		2193
		2194	=cut
767		2195
768	our $safe = new Safe "safe";	2196	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	2197	our $safe_hole = new Safe::Hole;
770		2198
771	$SIG{FPE} = 'IGNORE';	2199	$SIG{FPE} = 'IGNORE';
772		2200
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2201	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
774		2202
775	# here we export the classes and methods available to script code	2203	# here we export the classes and methods available to script code
776		2204
		2205	=pod
		2206
		2207	The following functions and methods are available within a safe environment:
		2208
		2209	cf::object contr pay_amount pay_player map
		2210	cf::object::player player
		2211	cf::player peaceful
		2212	cf::map trigger
		2213
		2214	=cut
		2215
777	for (	2216	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	2217	["cf::object" => qw(contr pay_amount pay_player map)],
779	["cf::object::player" => qw(player)],	2218	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	2219	["cf::player" => qw(peaceful)],
		2220	["cf::map" => qw(trigger)],
781	) {	2221	) {
782	no strict 'refs';	2222	no strict 'refs';
783	my ($pkg, @funs) = @$_;	2223	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2224	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	2225	for @funs;
786	}	2226	}
		2227
		2228	=over 4
		2229
		2230	=item @retval = safe_eval $code, [var => value, ...]
		2231
		2232	Compiled and executes the given perl code snippet. additional var/value
		2233	pairs result in temporary local (my) scalar variables of the given name
		2234	that are available in the code snippet. Example:
		2235
		2236	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2237
		2238	=cut
787		2239
788	sub safe_eval($;@) {	2240	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	2241	my ($code, %vars) = @_;
790		2242
791	my $qcode = $code;	2243	my $qcode = $code;
…		…
814	}	2266	}
815		2267
816	wantarray ? @res : $res[0]	2268	wantarray ? @res : $res[0]
817	}	2269	}
818		2270
		2271	=item cf::register_script_function $function => $cb
		2272
		2273	Register a function that can be called from within map/npc scripts. The
		2274	function should be reasonably secure and should be put into a package name
		2275	like the extension.
		2276
		2277	Example: register a function that gets called whenever a map script calls
		2278	C<rent::overview>, as used by the C<rent> extension.
		2279
		2280	cf::register_script_function "rent::overview" => sub {
		2281	...
		2282	};
		2283
		2284	=cut
		2285
819	sub register_script_function {	2286	sub register_script_function {
820	my ($fun, $cb) = @_;	2287	my ($fun, $cb) = @_;
821		2288
822	no strict 'refs';	2289	no strict 'refs';
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2290	*{"safe::$fun"} = $safe_hole->wrap ($cb);
824	}	2291	}
825		2292
		2293	=back
		2294
		2295	=cut
		2296
826	#############################################################################	2297	#############################################################################
827	# the server's main()	2298
		2299	=head2 EXTENSION DATABASE SUPPORT
		2300
		2301	Crossfire maintains a very simple database for extension use. It can
		2302	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2303	convert to/from binary).
		2304
		2305	The parameter C<$family> should best start with the name of the extension
		2306	using it, it should be unique.
		2307
		2308	=over 4
		2309
		2310	=item $value = cf::db_get $family => $key
		2311
		2312	Returns a single value from the database.
		2313
		2314	=item cf::db_put $family => $key => $value
		2315
		2316	Stores the given C<$value> in the family.
		2317
		2318	=cut
		2319
		2320	our $DB;
		2321
		2322	sub db_init {
		2323	unless ($DB) {
		2324	$DB = BDB::db_create $DB_ENV;
		2325
		2326	cf::sync_job {
		2327	eval {
		2328	$DB->set_flags (BDB::CHKSUM);
		2329
		2330	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2331	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2332	cf::cleanup "db_open(db): $!" if $!;
		2333	};
		2334	cf::cleanup "db_open(db): $@" if $@;
		2335	};
		2336	}
		2337	}
		2338
		2339	sub db_get($$) {
		2340	my $key = "$_[0]/$_[1]";
		2341
		2342	cf::sync_job {
		2343	BDB::db_get $DB, undef, $key, my $data;
		2344
		2345	$! ? ()
		2346	: $data
		2347	}
		2348	}
		2349
		2350	sub db_put($$$) {
		2351	BDB::dbreq_pri 4;
		2352	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2353	}
		2354
		2355	=item cf::cache $id => [$paths...], $processversion => $process
		2356
		2357	Generic caching function that returns the value of the resource $id,
		2358	caching and regenerating as required.
		2359
		2360	This function can block.
		2361
		2362	=cut
		2363
		2364	sub cache {
		2365	my ($id, $src, $processversion, $process) = @_;
		2366
		2367	my $meta =
		2368	join "\x00",
		2369	$processversion,
		2370	map {
		2371	aio_stat $_
		2372	and Carp::croak "$_: $!";
		2373
		2374	($_, (stat _)[7,9])
		2375	} @$src;
		2376
		2377	my $dbmeta = db_get cache => "$id/meta";
		2378	if ($dbmeta ne $meta) {
		2379	# changed, we may need to process
		2380
		2381	my @data;
		2382	my $md5;
		2383
		2384	for (0 .. $#$src) {
		2385	0 <= aio_load $src->[$_], $data[$_]
		2386	or Carp::croak "$src->[$_]: $!";
		2387	}
		2388
		2389	# if processing is expensive, check
		2390	# checksum first
		2391	if (1) {
		2392	$md5 =
		2393	join "\x00",
		2394	$processversion,
		2395	map {
		2396	Coro::cede;
		2397	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2398	} 0.. $#$src;
		2399
		2400
		2401	my $dbmd5 = db_get cache => "$id/md5";
		2402	if ($dbmd5 eq $md5) {
		2403	db_put cache => "$id/meta", $meta;
		2404
		2405	return db_get cache => "$id/data";
		2406	}
		2407	}
		2408
		2409	my $t1 = Time::HiRes::time;
		2410	my $data = $process->(\@data);
		2411	my $t2 = Time::HiRes::time;
		2412
		2413	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2414
		2415	db_put cache => "$id/data", $data;
		2416	db_put cache => "$id/md5" , $md5;
		2417	db_put cache => "$id/meta", $meta;
		2418
		2419	return $data;
		2420	}
		2421
		2422	db_get cache => "$id/data"
		2423	}
		2424
		2425	=item fork_call { }, $args
		2426
		2427	Executes the given code block with the given arguments in a seperate
		2428	process, returning the results. Everything must be serialisable with
		2429	Coro::Storable. May, of course, block. Note that the executed sub may
		2430	never block itself or use any form of Event handling.
		2431
		2432	=cut
		2433
		2434	sub fork_call(&@) {
		2435	my ($cb, @args) = @_;
		2436
		2437	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2438	# or die "socketpair: $!";
		2439	pipe my $fh1, my $fh2
		2440	or die "pipe: $!";
		2441
		2442	if (my $pid = fork) {
		2443	close $fh2;
		2444
		2445	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2446	$res = Coro::Storable::thaw $res;
		2447
		2448	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2449
		2450	die $$res unless "ARRAY" eq ref $res;
		2451
		2452	return wantarray ? @$res : $res->[-1];
		2453	} else {
		2454	reset_signals;
		2455	local $SIG{__WARN__};
		2456	local $SIG{__DIE__};
		2457	eval {
		2458	close $fh1;
		2459
		2460	my @res = eval { $cb->(@args) };
		2461	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2462	};
		2463
		2464	warn $@ if $@;
		2465	_exit 0;
		2466	}
		2467	}
		2468
		2469
		2470
		2471	#############################################################################
		2472	# the server's init and main functions
		2473
		2474	sub load_facedata($) {
		2475	my ($path) = @_;
		2476
		2477	warn "loading facedata from $path\n";
		2478
		2479	my $facedata;
		2480	0 < aio_load $path, $facedata
		2481	or die "$path: $!";
		2482
		2483	$facedata = Coro::Storable::thaw $facedata;
		2484
		2485	$facedata->{version} == 2
		2486	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2487
		2488	{
		2489	my $faces = $facedata->{faceinfo};
		2490
		2491	while (my ($face, $info) = each %$faces) {
		2492	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2493	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2494	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2495	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2496	Coro::cede;
		2497	}
		2498
		2499	while (my ($face, $info) = each %$faces) {
		2500	next unless $info->{smooth};
		2501	my $idx = cf::face::find $face
		2502	or next;
		2503	if (my $smooth = cf::face::find $info->{smooth}) {
		2504	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2505	} else {
		2506	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2507	}
		2508	Coro::cede;
		2509	}
		2510	}
		2511
		2512	{
		2513	my $anims = $facedata->{animinfo};
		2514
		2515	while (my ($anim, $info) = each %$anims) {
		2516	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2517	Coro::cede;
		2518	}
		2519
		2520	cf::anim::invalidate_all; # d'oh
		2521	}
		2522
		2523	1
		2524	}
		2525
		2526	sub reload_regions {
		2527	load_resource_file "$MAPDIR/regions"
		2528	or die "unable to load regions file\n";
		2529	}
		2530
		2531	sub reload_facedata {
		2532	load_facedata "$DATADIR/facedata"
		2533	or die "unable to load facedata\n";
		2534	}
		2535
		2536	sub reload_archetypes {
		2537	load_resource_file "$DATADIR/archetypes"
		2538	or die "unable to load archetypes\n";
		2539	}
		2540
		2541	sub reload_treasures {
		2542	load_resource_file "$DATADIR/treasures"
		2543	or die "unable to load treasurelists\n";
		2544	}
		2545
		2546	sub reload_resources {
		2547	warn "reloading resource files...\n";
		2548
		2549	reload_regions;
		2550	reload_facedata;
		2551	reload_archetypes;
		2552	reload_treasures;
		2553
		2554	warn "finished reloading resource files\n";
		2555	}
		2556
		2557	sub init {
		2558	reload_resources;
		2559	}
		2560
		2561	sub cfg_load {
		2562	open my $fh, "<:utf8", "$CONFDIR/config"
		2563	or return;
		2564
		2565	local $/;
		2566	*CFG = YAML::Syck::Load <$fh>;
		2567
		2568	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2569
		2570	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2571	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2572
		2573	if (exists $CFG{mlockall}) {
		2574	eval {
		2575	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2576	and die "WARNING: m(un)lockall failed: $!\n";
		2577	};
		2578	warn $@ if $@;
		2579	}
		2580	}
828		2581
829	sub main {	2582	sub main {
		2583	# we must not ever block the main coroutine
		2584	local $Coro::idle = sub {
		2585	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2586	(async {
		2587	Event::one_event;
		2588	})->prio (Coro::PRIO_MAX);
		2589	};
		2590
		2591	cfg_load;
		2592	db_init;
		2593	load_extensions;
		2594
		2595	$TICK_WATCHER->start;
830	Event::loop;	2596	Event::loop;
831	}	2597	}
832		2598
833	#############################################################################	2599	#############################################################################
834	# initialisation	2600	# initialisation and cleanup
835		2601
836	register "<global>", __PACKAGE__;	2602	# install some emergency cleanup handlers
		2603	BEGIN {
		2604	for my $signal (qw(INT HUP TERM)) {
		2605	Event->signal (
		2606	reentrant => 0,
		2607	data => WF_AUTOCANCEL,
		2608	signal => $signal,
		2609	prio => 0,
		2610	cb => sub {
		2611	cf::cleanup "SIG$signal";
		2612	},
		2613	);
		2614	}
		2615	}
		2616
		2617	sub emergency_save() {
		2618	my $freeze_guard = cf::freeze_mainloop;
		2619
		2620	warn "enter emergency perl save\n";
		2621
		2622	cf::sync_job {
		2623	# use a peculiar iteration method to avoid tripping on perl
		2624	# refcount bugs in for. also avoids problems with players
		2625	# and maps saved/destroyed asynchronously.
		2626	warn "begin emergency player save\n";
		2627	for my $login (keys %cf::PLAYER) {
		2628	my $pl = $cf::PLAYER{$login} or next;
		2629	$pl->valid or next;
		2630	$pl->save;
		2631	}
		2632	warn "end emergency player save\n";
		2633
		2634	warn "begin emergency map save\n";
		2635	for my $path (keys %cf::MAP) {
		2636	my $map = $cf::MAP{$path} or next;
		2637	$map->valid or next;
		2638	$map->save;
		2639	}
		2640	warn "end emergency map save\n";
		2641
		2642	warn "begin emergency database checkpoint\n";
		2643	BDB::db_env_txn_checkpoint $DB_ENV;
		2644	warn "end emergency database checkpoint\n";
		2645	};
		2646
		2647	warn "leave emergency perl save\n";
		2648	}
		2649
		2650	sub post_cleanup {
		2651	my ($make_core) = @_;
		2652
		2653	warn Carp::longmess "post_cleanup backtrace"
		2654	if $make_core;
		2655	}
		2656
		2657	sub do_reload_perl() {
		2658	# can/must only be called in main
		2659	if ($Coro::current != $Coro::main) {
		2660	warn "can only reload from main coroutine";
		2661	return;
		2662	}
		2663
		2664	warn "reloading...";
		2665
		2666	warn "entering sync_job";
		2667
		2668	cf::sync_job {
		2669	cf::write_runtime; # external watchdog should not bark
		2670	cf::emergency_save;
		2671	cf::write_runtime; # external watchdog should not bark
		2672
		2673	warn "syncing database to disk";
		2674	BDB::db_env_txn_checkpoint $DB_ENV;
		2675
		2676	# if anything goes wrong in here, we should simply crash as we already saved
		2677
		2678	warn "cancelling all WF_AUTOCANCEL watchers";
		2679	for (Event::all_watchers) {
		2680	$_->cancel if $_->data & WF_AUTOCANCEL;
		2681	}
		2682
		2683	warn "flushing outstanding aio requests";
		2684	for (;;) {
		2685	BDB::flush;
		2686	IO::AIO::flush;
		2687	Coro::cede;
		2688	last unless IO::AIO::nreqs || BDB::nreqs;
		2689	warn "iterate...";
		2690	}
		2691
		2692	++$RELOAD;
		2693
		2694	warn "cancelling all extension coros";
		2695	$_->cancel for values %EXT_CORO;
		2696	%EXT_CORO = ();
		2697
		2698	warn "removing commands";
		2699	%COMMAND = ();
		2700
		2701	warn "removing ext commands";
		2702	%EXTCMD = ();
		2703
		2704	warn "unloading/nuking all extensions";
		2705	for my $pkg (@EXTS) {
		2706	warn "... unloading $pkg";
		2707
		2708	if (my $cb = $pkg->can ("unload")) {
		2709	eval {
		2710	$cb->($pkg);
		2711	1
		2712	} or warn "$pkg unloaded, but with errors: $@";
		2713	}
		2714
		2715	warn "... nuking $pkg";
		2716	Symbol::delete_package $pkg;
		2717	}
		2718
		2719	warn "unloading all perl modules loaded from $LIBDIR";
		2720	while (my ($k, $v) = each %INC) {
		2721	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2722
		2723	warn "... unloading $k";
		2724	delete $INC{$k};
		2725
		2726	$k =~ s/\.pm$//;
		2727	$k =~ s/\//::/g;
		2728
		2729	if (my $cb = $k->can ("unload_module")) {
		2730	$cb->();
		2731	}
		2732
		2733	Symbol::delete_package $k;
		2734	}
		2735
		2736	warn "getting rid of safe::, as good as possible";
		2737	Symbol::delete_package "safe::$_"
		2738	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2739
		2740	warn "unloading cf.pm \"a bit\"";
		2741	delete $INC{"cf.pm"};
		2742	delete $INC{"cf/pod.pm"};
		2743
		2744	# don't, removes xs symbols, too,
		2745	# and global variables created in xs
		2746	#Symbol::delete_package __PACKAGE__;
		2747
		2748	warn "unload completed, starting to reload now";
		2749
		2750	warn "reloading cf.pm";
		2751	require cf;
		2752	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2753
		2754	warn "loading config and database again";
		2755	cf::cfg_load;
		2756
		2757	warn "loading extensions";
		2758	cf::load_extensions;
		2759
		2760	warn "reattaching attachments to objects/players";
		2761	_global_reattach; # objects, sockets
		2762	warn "reattaching attachments to maps";
		2763	reattach $_ for values %MAP;
		2764	warn "reattaching attachments to players";
		2765	reattach $_ for values %PLAYER;
		2766
		2767	warn "leaving sync_job";
		2768
		2769	1
		2770	} or do {
		2771	warn $@;
		2772	warn "error while reloading, exiting.";
		2773	exit 1;
		2774	};
		2775
		2776	warn "reloaded";
		2777	};
		2778
		2779	our $RELOAD_WATCHER; # used only during reload
		2780
		2781	sub reload_perl() {
		2782	# doing reload synchronously and two reloads happen back-to-back,
		2783	# coro crashes during coro_state_free->destroy here.
		2784
		2785	$RELOAD_WATCHER ||= Event->timer (
		2786	reentrant => 0,
		2787	after => 0,
		2788	data => WF_AUTOCANCEL,
		2789	cb => sub {
		2790	do_reload_perl;
		2791	undef $RELOAD_WATCHER;
		2792	},
		2793	);
		2794	}
		2795
		2796	register_command "reload" => sub {
		2797	my ($who, $arg) = @_;
		2798
		2799	if ($who->flag (FLAG_WIZ)) {
		2800	$who->message ("reloading server.");
		2801	async { reload_perl };
		2802	}
		2803	};
837		2804
838	unshift @INC, $LIBDIR;	2805	unshift @INC, $LIBDIR;
839		2806
840	load_extensions;	2807	my $bug_warning = 0;
		2808
		2809	our @WAIT_FOR_TICK;
		2810	our @WAIT_FOR_TICK_BEGIN;
		2811
		2812	sub wait_for_tick {
		2813	return unless $TICK_WATCHER->is_active;
		2814	return if $Coro::current == $Coro::main;
		2815
		2816	my $signal = new Coro::Signal;
		2817	push @WAIT_FOR_TICK, $signal;
		2818	$signal->wait;
		2819	}
		2820
		2821	sub wait_for_tick_begin {
		2822	return unless $TICK_WATCHER->is_active;
		2823	return if $Coro::current == $Coro::main;
		2824
		2825	my $signal = new Coro::Signal;
		2826	push @WAIT_FOR_TICK_BEGIN, $signal;
		2827	$signal->wait;
		2828	}
841		2829
842	$TICK_WATCHER = Event->timer (	2830	$TICK_WATCHER = Event->timer (
		2831	reentrant => 0,
		2832	parked => 1,
843	prio => 1,	2833	prio => 0,
844	at => $NEXT_TICK || 1,	2834	at => $NEXT_TICK || $TICK,
		2835	data => WF_AUTOCANCEL,
845	cb => sub {	2836	cb => sub {
		2837	if ($Coro::current != $Coro::main) {
		2838	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2839	unless ++$bug_warning > 10;
		2840	return;
		2841	}
		2842
		2843	$NOW = Event::time;
		2844
846	cf::server_tick; # one server iteration	2845	cf::server_tick; # one server iteration
847		2846
848	my $NOW = Event::time;	2847	$RUNTIME += $TICK;
849	$NEXT_TICK += $TICK;	2848	$NEXT_TICK += $TICK;
850		2849
		2850	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2851	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2852	Coro::async_pool {
		2853	write_runtime
		2854	or warn "ERROR: unable to write runtime file: $!";
		2855	};
		2856	}
		2857
		2858	# my $AFTER = Event::time;
		2859	# warn $AFTER - $NOW;#d#
		2860
851	# if we are delayed by four ticks, skip them all	2861	# if we are delayed by four ticks or more, skip them all
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2862	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
853		2863
854	$TICK_WATCHER->at ($NEXT_TICK);	2864	$TICK_WATCHER->at ($NEXT_TICK);
855	$TICK_WATCHER->start;	2865	$TICK_WATCHER->start;
		2866
		2867	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2868	$sig->send;
		2869	}
		2870	while (my $sig = shift @WAIT_FOR_TICK) {
		2871	$sig->send;
		2872	}
		2873
		2874	_post_tick;
856	},	2875	},
857	);	2876	);
858		2877
859	_reload_2;	2878	{
		2879	BDB::max_poll_time $TICK * 0.1;
		2880	$BDB_POLL_WATCHER = Event->io (
		2881	reentrant => 0,
		2882	fd => BDB::poll_fileno,
		2883	poll => 'r',
		2884	prio => 0,
		2885	data => WF_AUTOCANCEL,
		2886	cb => \&BDB::poll_cb,
		2887	);
		2888	BDB::min_parallel 8;
		2889
		2890	BDB::set_sync_prepare {
		2891	my $status;
		2892	my $current = $Coro::current;
		2893	(
		2894	sub {
		2895	$status = $!;
		2896	$current->ready; undef $current;
		2897	},
		2898	sub {
		2899	Coro::schedule while defined $current;
		2900	$! = $status;
		2901	},
		2902	)
		2903	};
		2904
		2905	unless ($DB_ENV) {
		2906	$DB_ENV = BDB::db_env_create;
		2907
		2908	cf::sync_job {
		2909	eval {
		2910	BDB::db_env_open
		2911	$DB_ENV,
		2912	$BDBDIR,
		2913	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2914	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2915	0666;
		2916
		2917	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2918
		2919	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2920	$DB_ENV->set_lk_detect;
		2921	};
		2922
		2923	cf::cleanup "db_env_open(db): $@" if $@;
		2924	};
		2925	}
		2926	}
		2927
		2928	{
		2929	IO::AIO::min_parallel 8;
		2930
		2931	undef $Coro::AIO::WATCHER;
		2932	IO::AIO::max_poll_time $TICK * 0.1;
		2933	$AIO_POLL_WATCHER = Event->io (
		2934	reentrant => 0,
		2935	data => WF_AUTOCANCEL,
		2936	fd => IO::AIO::poll_fileno,
		2937	poll => 'r',
		2938	prio => 6,
		2939	cb => \&IO::AIO::poll_cb,
		2940	);
		2941	}
		2942
		2943	my $_log_backtrace;
		2944
		2945	sub _log_backtrace {
		2946	my ($msg, @addr) = @_;
		2947
		2948	$msg =~ s/\n//;
		2949
		2950	# limit the # of concurrent backtraces
		2951	if ($_log_backtrace < 2) {
		2952	++$_log_backtrace;
		2953	async {
		2954	my @bt = fork_call {
		2955	@addr = map { sprintf "%x", $_ } @addr;
		2956	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2957	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2958	or die "addr2line: $!";
		2959
		2960	my @funcs;
		2961	my @res = <$fh>;
		2962	chomp for @res;
		2963	while (@res) {
		2964	my ($func, $line) = splice @res, 0, 2, ();
		2965	push @funcs, "[$func] $line";
		2966	}
		2967
		2968	@funcs
		2969	};
		2970
		2971	LOG llevInfo, "[ABT] $msg\n";
		2972	LOG llevInfo, "[ABT] $_\n" for @bt;
		2973	--$_log_backtrace;
		2974	};
		2975	} else {
		2976	LOG llevInfo, "[ABT] $msg\n";
		2977	LOG llevInfo, "[ABT] [suppressed]\n";
		2978	}
		2979	}
		2980
		2981	# load additional modules
		2982	use cf::pod;
		2983
		2984	END { cf::emergency_save }
860		2985
861	1	2986	1
862		2987

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