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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.94 by root, Thu Dec 21 23:02:54 2006 UTC vs.
Revision 1.121 by root, Tue Jan 2 11:11:52 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;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3;
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
10	use IO::AIO ();	22	use IO::AIO 2.31 ();
11	use YAML::Syck ();	23	use YAML::Syck ();
12	use Time::HiRes;	24	use Time::HiRes;
13	use Event;	25
14	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
15		27
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
18		30
19	use strict;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
20		32
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		34
23	our %COMMAND = ();	35	our %COMMAND = ();
24	our %COMMAND_TIME = ();	36	our %COMMAND_TIME = ();
25	our %EXTCMD = ();	37	our %EXTCMD = ();
26		38
27	_init_vars;
28
29	our @EVENT;	39	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	40	our $LIBDIR = datadir . "/ext";
31		41
32	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	43	our $TICK_WATCHER;
34	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
35		46
36	our %CFG;	47	our %CFG;
37		48
38	our $UPTIME; $UPTIME ||= time;	49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
39		78
40	#############################################################################	79	#############################################################################
41		80
42	=head2 GLOBAL VARIABLES	81	=head2 GLOBAL VARIABLES
43		82
44	=over 4	83	=over 4
45		84
46	=item $cf::UPTIME	85	=item $cf::UPTIME
47		86
48	The timestamp of the server start (so not actually an uptime).	87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
49		93
50	=item $cf::LIBDIR	94	=item $cf::LIBDIR
51		95
52	The perl library directory, where extensions and cf-specific modules can	96	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
54		102
55	=item $cf::TICK	103	=item $cf::TICK
56		104
57	The interval between server ticks, in seconds.	105	The interval between server ticks, in seconds.
58		106
…		…
66	=cut	114	=cut
67		115
68	BEGIN {	116	BEGIN {
69	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
71	$msg .= "\n"	121	$msg .= "\n"
72	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
73		123
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
76	};	125	};
77	}	126	}
78		127
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		134
86	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	136	# within the Safe compartment.
88	for my $pkg (qw(	137	for my $pkg (qw(
89	cf::global	138	cf::global cf::attachable
90	cf::object cf::object::player	139	cf::object cf::object::player
91	cf::client cf::player	140	cf::client cf::player
92	cf::arch cf::living	141	cf::arch cf::living
93	cf::map cf::party cf::region	142	cf::map cf::party cf::region
94	)) {	143	)) {
…		…
132	sub to_json($) {	181	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
135	}	184	}
136		185
		186	=item my $guard = cf::guard { BLOCK }
		187
		188	Run the given callback when the guard object gets destroyed (useful for
		189	coroutine cancellations).
		190
		191	You can call C<< ->cancel >> on the guard object to stop the block from
		192	being executed.
		193
		194	=cut
		195
		196	sub guard(&) {
		197	bless \(my $cb = $_[0]), cf::guard::;
		198	}
		199
		200	sub cf::guard::cancel {
		201	${$_[0]} = sub { };
		202	}
		203
		204	sub cf::guard::DESTROY {
		205	${$_[0]}->();
		206	}
		207
		208	=item cf::lock_wait $string
		209
		210	Wait until the given lock is available. See cf::lock_acquire.
		211
		212	=item my $lock = cf::lock_acquire $string
		213
		214	Wait until the given lock is available and then acquires it and returns
		215	a guard object. If the guard object gets destroyed (goes out of scope,
		216	for example when the coroutine gets canceled), the lock is automatically
		217	returned.
		218
		219	Lock names should begin with a unique identifier (for example, find_map
		220	uses map_find and load_map uses map_load).
		221
		222	=cut
		223
		224	our %LOCK;
		225
		226	sub lock_wait($) {
		227	my ($key) = @_;
		228
		229	# wait for lock, if any
		230	while ($LOCK{$key}) {
		231	push @{ $LOCK{$key} }, $Coro::current;
		232	Coro::schedule;
		233	}
		234	}
		235
		236	sub lock_acquire($) {
		237	my ($key) = @_;
		238
		239	# wait, to be sure we are not locked
		240	lock_wait $key;
		241
		242	$LOCK{$key} = [];
		243
		244	cf::guard {
		245	# wake up all waiters, to be on the safe side
		246	$_->ready for @{ delete $LOCK{$key} };
		247	}
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	local $FREEZE = 1;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro; $coro = async {
		307	eval {
		308	$cb->();
		309	};
		310	warn $@ if $@;
		311	};
		312
		313	$coro->on_destroy (sub {
		314	delete $EXT_CORO{$coro+0};
		315	});
		316	$EXT_CORO{$coro+0} = $coro;
		317
		318	$coro
		319	}
		320
		321	sub write_runtime {
		322	my $runtime = cf::localdir . "/runtime";
		323
		324	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		325	or return;
		326
		327	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		328	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		329	and return;
		330
		331	aio_fsync $fh
		332	and return;
		333
		334	close $fh
		335	or return;
		336
		337	aio_rename "$runtime~", $runtime
		338	and return;
		339
		340	1
		341	}
		342
137	=back	343	=back
138		344
139	=cut	345	=cut
		346
		347	#############################################################################
		348
		349	package cf::path;
		350
		351	sub new {
		352	my ($class, $path, $base) = @_;
		353
		354	$path = $path->as_string if ref $path;
		355
		356	my $self = bless { }, $class;
		357
		358	# {... are special paths that are not touched
		359	# ?xxx/... are special absolute paths
		360	# ?random/... random maps
		361	# /! non-realised random map exit
		362	# /... normal maps
		363	# ~/... per-player maps without a specific player (DO NOT USE)
		364	# ~user/... per-player map of a specific user
		365
		366	if ($path =~ /^{/) {
		367	# fine as it is
		368	} elsif ($path =~ s{^\?random/}{}) {
		369	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		370	$self->{random} = cf::from_json $data;
		371	} else {
		372	if ($path =~ s{^~([^/]+)?}{}) {
		373	$self->{user_rel} = 1;
		374
		375	if (defined $1) {
		376	$self->{user} = $1;
		377	} elsif ($base =~ m{^~([^/]+)/}) {
		378	$self->{user} = $1;
		379	} else {
		380	warn "cannot resolve user-relative path without user <$path,$base>\n";
		381	}
		382	} elsif ($path =~ /^\//) {
		383	# already absolute
		384	} else {
		385	$base =~ s{[^/]+/?$}{};
		386	return $class->new ("$base/$path");
		387	}
		388
		389	for ($path) {
		390	redo if s{/\.?/}{/};
		391	redo if s{/[^/]+/\.\./}{/};
		392	}
		393	}
		394
		395	$self->{path} = $path;
		396
		397	$self
		398	}
		399
		400	# the name / primary key / in-game path
		401	sub as_string {
		402	my ($self) = @_;
		403
		404	$self->{user_rel} ? "~$self->{user}$self->{path}"
		405	: $self->{random} ? "?random/$self->{path}"
		406	: $self->{path}
		407	}
		408
		409	# the displayed name, this is a one way mapping
		410	sub visible_name {
		411	my ($self) = @_;
		412
		413	# if (my $rmp = $self->{random}) {
		414	# # todo: be more intelligent about this
		415	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		416	# } else {
		417	$self->as_string
		418	# }
		419	}
		420
		421	# escape the /'s in the path
		422	sub _escaped_path {
		423	# ∕ is U+2215
		424	(my $path = $_[0]{path}) =~ s/\//∕/g;
		425	$path
		426	}
		427
		428	# the original (read-only) location
		429	sub load_path {
		430	my ($self) = @_;
		431
		432	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		433	}
		434
		435	# the temporary/swap location
		436	sub save_path {
		437	my ($self) = @_;
		438
		439	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		440	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		441	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		442	}
		443
		444	# the unique path, might be eq to save_path
		445	sub uniq_path {
		446	my ($self) = @_;
		447
		448	$self->{user_rel} || $self->{random}
		449	? undef
		450	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		451	}
		452
		453	# return random map parameters, or undef
		454	sub random_map_params {
		455	my ($self) = @_;
		456
		457	$self->{random}
		458	}
		459
		460	# this is somewhat ugly, but style maps do need special treatment
		461	sub is_style_map {
		462	$_[0]{path} =~ m{^/styles/}
		463	}
		464
		465	package cf;
140		466
141	#############################################################################	467	#############################################################################
142		468
143	=head2 ATTACHABLE OBJECTS	469	=head2 ATTACHABLE OBJECTS
144		470
…		…
249	my ($self, $victim) = @_;	575	my ($self, $victim) = @_;
250	...	576	...
251	}	577	}
252	}	578	}
253		579
		580	=item $attachable->valid
		581
		582	Just because you have a perl object does not mean that the corresponding
		583	C-level object still exists. If you try to access an object that has no
		584	valid C counterpart anymore you get an exception at runtime. This method
		585	can be used to test for existence of the C object part without causing an
		586	exception.
		587
254	=cut	588	=cut
255		589
256	# the following variables are defined in .xs and must not be re-created	590	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	591	our @CB_GLOBAL = (); # registry for all global events
		592	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	593	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	594	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	595	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	596	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	597	our @CB_MAP = ();
263		598
264	my %attachment;	599	my %attachment;
265		600
266	sub _attach_cb($$$$) {	601	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	602	my ($registry, $event, $prio, $cb) = @_;
…		…
272		607
273	@{$registry->[$event]} = sort	608	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	609	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	610	@{$registry->[$event] || []}, $cb;
276	}	611	}
		612
		613	# hack
		614	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		615
278	# attach handles attaching event callbacks	616	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	617	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	618	# registry (== where the callback attaches to).
281	sub _attach {	619	sub _attach {
…		…
283		621
284	my $object_type;	622	my $object_type;
285	my $prio = 0;	623	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	624	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		625
		626	#TODO: get rid of this hack
		627	if ($attachable_klass{$klass}) {
		628	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		629	}
		630
288	while (@arg) {	631	while (@arg) {
289	my $type = shift @arg;	632	my $type = shift @arg;
290		633
291	if ($type eq "prio") {	634	if ($type eq "prio") {
292	$prio = shift @arg;	635	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	710	my ($obj, $name) = @_;
368		711
369	exists $obj->{_attachment}{$name}	712	exists $obj->{_attachment}{$name}
370	}	713	}
371		714
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	715	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	716	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	717	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	718	(\\\@CB_$klass, KLASS_$klass)
376	}	719	}
377		720
…		…
413	}	756	}
414		757
415	0	758	0
416	}	759	}
417		760
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	761	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		762
420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	763	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		764
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	765	Generate an object-specific event with the given arguments.
429		766
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	767	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override	768	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	769	results (if you must, access C<@cf::invoke_results> directly).
433		770
434	=back	771	=back
435		772
436	=cut	773	=cut
437		774
438	#############################################################################	775	#############################################################################
439
440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442	Attachable objects includes objects, players, clients and maps.
443
444	=over 4
445
446	=item $object->valid
447
448	Just because you have a perl object does not mean that the corresponding
449	C-level object still exists. If you try to access an object that has no
450	valid C counterpart anymore you get an exception at runtime. This method
451	can be used to test for existence of the C object part without causing an
452	exception.
453
454	=back
455
456	=cut
457
458	#############################################################################
459	# object support	776	# object support
460		777
461	sub instantiate {
462	my ($obj, $data) = @_;
463
464	$data = from_json $data;
465
466	for (@$data) {
467	my ($name, $args) = @$_;
468
469	$obj->attach ($name, %{$args || {} });
470	}
471	}
472
473	# basically do the same as instantiate, without calling instantiate
474	sub reattach {	778	sub reattach {
		779	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	780	my ($obj) = @_;
		781
476	my $registry = $obj->registry;	782	my $registry = $obj->registry;
477		783
478	@$registry = ();	784	@$registry = ();
479		785
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	786	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	796	}
491	}	797	}
492	}	798	}
493		799
494	sub object_freezer_save {	800	cf::attachable->attach (
495	my ($filename, $rdata, $objs) = @_;
496
497	if (length $$rdata) {
498	warn sprintf "saving %s (%d,%d)\n",
499	$filename, length $$rdata, scalar @$objs;
500
501	if (open my $fh, ">:raw", "$filename~") {
502	chmod SAVE_MODE, $fh;
503	syswrite $fh, $$rdata;
504	close $fh;
505
506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
509	close $fh;
510	rename "$filename.pst~", "$filename.pst";
511	} else {
512	unlink "$filename.pst";
513	}
514
515	rename "$filename~", $filename;
516	} else {
517	warn "FATAL: $filename~: $!\n";
518	}
519	} else {
520	unlink $filename;
521	unlink "$filename.pst";
522	}
523	}
524
525	sub object_freezer_as_string {
526	my ($rdata, $objs) = @_;
527
528	use Data::Dumper;
529
530	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	801	prio => -1000000,
		802	on_instantiate => sub {
		803	my ($obj, $data) = @_;
		804
		805	$data = from_json $data;
		806
		807	for (@$data) {
		808	my ($name, $args) = @$_;
		809
		810	$obj->attach ($name, %{$args || {} });
		811	}
		812	},
		813	on_reattach => \&reattach,
554	on_clone => sub {	814	on_clone => sub {
555	my ($src, $dst) = @_;	815	my ($src, $dst) = @_;
556		816
557	@{$dst->registry} = @{$src->registry};	817	@{$dst->registry} = @{$src->registry};
558		818
…		…
560		820
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	821	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	822	if exists $src->{_attachment};
563	},	823	},
564	);	824	);
		825
		826	sub object_freezer_save {
		827	my ($filename, $rdata, $objs) = @_;
		828
		829	sync_job {
		830	if (length $$rdata) {
		831	warn sprintf "saving %s (%d,%d)\n",
		832	$filename, length $$rdata, scalar @$objs;
		833
		834	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		835	chmod SAVE_MODE, $fh;
		836	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		837	aio_fsync $fh;
		838	close $fh;
		839
		840	if (@$objs) {
		841	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		842	chmod SAVE_MODE, $fh;
		843	my $data = Storable::nfreeze { version => 1, objs => $objs };
		844	aio_write $fh, 0, (length $data), $data, 0;
		845	aio_fsync $fh;
		846	close $fh;
		847	aio_rename "$filename.pst~", "$filename.pst";
		848	}
		849	} else {
		850	aio_unlink "$filename.pst";
		851	}
		852
		853	aio_rename "$filename~", $filename;
		854	} else {
		855	warn "FATAL: $filename~: $!\n";
		856	}
		857	} else {
		858	aio_unlink $filename;
		859	aio_unlink "$filename.pst";
		860	}
		861	}
		862	}
		863
		864	sub object_freezer_as_string {
		865	my ($rdata, $objs) = @_;
		866
		867	use Data::Dumper;
		868
		869	$$rdata . Dumper $objs
		870	}
		871
		872	sub object_thawer_load {
		873	my ($filename) = @_;
		874
		875	my ($data, $av);
		876
		877	(aio_load $filename, $data) >= 0
		878	or return;
		879
		880	unless (aio_stat "$filename.pst") {
		881	(aio_load "$filename.pst", $av) >= 0
		882	or return;
		883	$av = eval { (Storable::thaw $av)->{objs} };
		884	}
		885
		886	warn sprintf "loading %s (%d)\n",
		887	$filename, length $data, scalar @{$av || []};#d#
		888	return ($data, $av);
		889	}
565		890
566	#############################################################################	891	#############################################################################
567	# command handling &c	892	# command handling &c
568		893
569	=item cf::register_command $name => \&callback($ob,$args);	894	=item cf::register_command $name => \&callback($ob,$args);
…		…
758		1083
759	=head2 CORE EXTENSIONS	1084	=head2 CORE EXTENSIONS
760		1085
761	Functions and methods that extend core crossfire objects.	1086	Functions and methods that extend core crossfire objects.
762		1087
		1088	=head3 cf::player
		1089
763	=over 4	1090	=over 4
764		1091
765	=item cf::player::exists $login	1092	=item cf::player::exists $login
766		1093
767	Returns true when the given account exists.	1094	Returns true when the given account exists.
…		…
771	sub cf::player::exists($) {	1098	sub cf::player::exists($) {
772	cf::player::find $_[0]	1099	cf::player::find $_[0]
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1100	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
774	}	1101	}
775		1102
		1103	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1104
		1105	Sends an ext reply to the player.
		1106
		1107	=cut
		1108
		1109	sub cf::player::ext_reply($$$%) {
		1110	my ($self, $id, %msg) = @_;
		1111
		1112	$msg{msgid} = $id;
		1113
		1114	$self->send ("ext " . to_json \%msg);
		1115	}
		1116
		1117	=back
		1118
		1119
		1120	=head3 cf::map
		1121
		1122	=over 4
		1123
		1124	=cut
		1125
		1126	package cf::map;
		1127
		1128	use Fcntl;
		1129	use Coro::AIO;
		1130
		1131	our $MAX_RESET = 7200;
		1132	our $DEFAULT_RESET = 3600;
		1133
		1134	sub generate_random_map {
		1135	my ($path, $rmp) = @_;
		1136
		1137	# mit "rum" bekleckern, nicht
		1138	cf::map::_create_random_map
		1139	$path,
		1140	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1141	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1142	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1143	$rmp->{exit_on_final_map},
		1144	$rmp->{xsize}, $rmp->{ysize},
		1145	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1146	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1147	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1148	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1149	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1150	(cf::region::find $rmp->{region})
		1151	}
		1152
		1153	# and all this just because we cannot iterate over
		1154	# all maps in C++...
		1155	sub change_all_map_light {
		1156	my ($change) = @_;
		1157
		1158	$_->change_map_light ($change) for values %cf::MAP;
		1159	}
		1160
		1161	sub try_load_header($) {
		1162	my ($path) = @_;
		1163
		1164	utf8::encode $path;
		1165	aio_open $path, O_RDONLY, 0
		1166	or return;
		1167
		1168	my $map = cf::map::new
		1169	or return;
		1170
		1171	$map->load_header ($path)
		1172	or return;
		1173
		1174	$map->{load_path} = $path;
		1175
		1176	$map
		1177	}
		1178
		1179	sub find_map {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find_map<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	if ($map) {
		1196	# safety
		1197	$map->{instantiate_time} = $cf::RUNTIME
		1198	if $map->{instantiate_time} > $cf::RUNTIME;
		1199	} else {
		1200	if (my $rmp = $path->random_map_params) {
		1201	$map = generate_random_map $key, $rmp;
		1202	} else {
		1203	$map = try_load_header $path->load_path;
		1204	}
		1205
		1206	$map or return;
		1207
		1208	$map->{load_original} = 1;
		1209	$map->{instantiate_time} = $cf::RUNTIME;
		1210	$map->instantiate;
		1211
		1212	# per-player maps become, after loading, normal maps
		1213	$map->per_player (0) if $path->{user_rel};
		1214	}
		1215
		1216	$map->path ($key);
		1217	$map->{path} = $path;
		1218	$map->{last_save} = $cf::RUNTIME;
		1219	$map->last_access ($cf::RUNTIME);
		1220
		1221	if ($map->should_reset) {
		1222	$map->reset;
		1223	$map = find_map $path;
		1224	}
		1225
		1226	$cf::MAP{$key} = $map
		1227	}
		1228	}
		1229
		1230	sub load {
		1231	my ($self) = @_;
		1232
		1233	my $path = $self->{path};
		1234	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1235
		1236	return if $self->in_memory != cf::MAP_SWAPPED;
		1237
		1238	$self->in_memory (cf::MAP_LOADING);
		1239
		1240	$self->alloc;
		1241	$self->load_objects ($self->{load_path}, 1)
		1242	or return;
		1243
		1244	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1245	if delete $self->{load_original};
		1246
		1247	if (my $uniq = $path->uniq_path) {
		1248	utf8::encode $uniq;
		1249	if (aio_open $uniq, O_RDONLY, 0) {
		1250	$self->clear_unique_items;
		1251	$self->load_objects ($uniq, 0);
		1252	}
		1253	}
		1254
		1255	# now do the right thing for maps
		1256	$self->link_multipart_objects;
		1257
		1258	if ($self->{path}->is_style_map) {
		1259	$self->{deny_save} = 1;
		1260	$self->{deny_reset} = 1;
		1261	} else {
		1262	$self->fix_auto_apply;
		1263	$self->decay_objects;
		1264	$self->update_buttons;
		1265	$self->set_darkness_map;
		1266	$self->difficulty ($self->estimate_difficulty)
		1267	unless $self->difficulty;
		1268	$self->activate;
		1269	}
		1270
		1271	$self->in_memory (cf::MAP_IN_MEMORY);
		1272	}
		1273
		1274	sub load_map_sync {
		1275	my ($path, $origin) = @_;
		1276
		1277	#warn "load_map_sync<$path, $origin>\n";#d#
		1278
		1279	cf::sync_job {
		1280	my $map = cf::map::find_map $path, $origin
		1281	or return;
		1282	$map->load;
		1283	$map
		1284	}
		1285	}
		1286
		1287	sub save {
		1288	my ($self) = @_;
		1289
		1290	$self->{last_save} = $cf::RUNTIME;
		1291
		1292	return unless $self->dirty;
		1293
		1294	my $save = $self->{path}->save_path; utf8::encode $save;
		1295	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1296
		1297	$self->{load_path} = $save;
		1298
		1299	return if $self->{deny_save};
		1300
		1301	if ($uniq) {
		1302	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1303	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1304	} else {
		1305	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1306	}
		1307	}
		1308
		1309	sub swap_out {
		1310	my ($self) = @_;
		1311
		1312	return if $self->players;
		1313	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1314	return if $self->{deny_save};
		1315
		1316	$self->save;
		1317	$self->clear;
		1318	$self->in_memory (cf::MAP_SWAPPED);
		1319	}
		1320
		1321	sub reset_at {
		1322	my ($self) = @_;
		1323
		1324	# TODO: safety, remove and allow resettable per-player maps
		1325	return 1e99 if $self->{path}{user_rel};
		1326	return 1e99 if $self->{deny_reset};
		1327
		1328	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1329	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1330
		1331	$time + $to
		1332	}
		1333
		1334	sub should_reset {
		1335	my ($self) = @_;
		1336
		1337	$self->reset_at <= $cf::RUNTIME
		1338	}
		1339
		1340	sub unlink_save {
		1341	my ($self) = @_;
		1342
		1343	utf8::encode (my $save = $self->{path}->save_path);
		1344	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1345	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1346	}
		1347
		1348	sub rename {
		1349	my ($self, $new_path) = @_;
		1350
		1351	$self->unlink_save;
		1352
		1353	delete $cf::MAP{$self->path};
		1354	$self->{path} = new cf::path $new_path;
		1355	$self->path ($self->{path}->as_string);
		1356	$cf::MAP{$self->path} = $self;
		1357
		1358	$self->save;
		1359	}
		1360
		1361	sub reset {
		1362	my ($self) = @_;
		1363
		1364	return if $self->players;
		1365	return if $self->{path}{user_rel};#d#
		1366
		1367	warn "resetting map ", $self->path;#d#
		1368
		1369	delete $cf::MAP{$self->path};
		1370
		1371	$_->clear_links_to ($self) for values %cf::MAP;
		1372
		1373	$self->unlink_save;
		1374	$self->destroy;
		1375	}
		1376
		1377	my $nuke_counter = "aaaa";
		1378
		1379	sub nuke {
		1380	my ($self) = @_;
		1381
		1382	$self->{deny_save} = 1;
		1383	$self->reset_timeout (1);
		1384	$self->rename ("{nuke}/" . ($nuke_counter++));
		1385	$self->reset; # polite request, might not happen
		1386	}
		1387
		1388	sub customise_for {
		1389	my ($map, $ob) = @_;
		1390
		1391	if ($map->per_player) {
		1392	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1393	}
		1394
		1395	$map
		1396	}
		1397
		1398	sub emergency_save {
		1399	local $cf::FREEZE = 1;
		1400
		1401	warn "enter emergency map save\n";
		1402
		1403	cf::sync_job {
		1404	warn "begin emergency map save\n";
		1405	$_->save for values %cf::MAP;
		1406	};
		1407
		1408	warn "end emergency map save\n";
		1409	}
		1410
		1411	package cf;
		1412
		1413	=back
		1414
		1415
		1416	=head3 cf::object::player
		1417
		1418	=over 4
		1419
776	=item $player_object->reply ($npc, $msg[, $flags])	1420	=item $player_object->reply ($npc, $msg[, $flags])
777		1421
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1422	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
779	can be C<undef>. Does the right thing when the player is currently in a	1423	can be C<undef>. Does the right thing when the player is currently in a
780	dialogue with the given NPC character.	1424	dialogue with the given NPC character.
781		1425
782	=cut	1426	=cut
783		1427
784	# rough implementation of a future "reply" method that works	1428	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1429	# with dialog boxes.
		1430	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1431	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1432	my ($self, $npc, $msg, $flags) = @_;
788		1433
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1434	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1435
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1439	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1440	$self->message ($msg, $flags);
796	}	1441	}
797	}	1442	}
798		1443
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
806	my ($self, $id, %msg) = @_;
807
808	$msg{msgid} = $id;
809
810	$self->send ("ext " . to_json \%msg);
811	}
812
813	=item $player_object->may ("access")	1444	=item $player_object->may ("access")
814		1445
815	Returns wether the given player is authorized to access resource "access"	1446	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1447	(e.g. "command_wizcast").
817		1448
…		…
824	(ref $cf::CFG{"may_$access"}	1455	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1456	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1457	: $cf::CFG{"may_$access"})
827	}	1458	}
828		1459
829	=cut	1460	=item $player_object->enter_link
830		1461
831	#############################################################################	1462	Freezes the player and moves him/her to a special map (C<{link}>).
		1463
		1464	The player should be reaosnably safe there for short amounts of time. You
		1465	I<MUST> call C<leave_link> as soon as possible, though.
		1466
		1467	=item $player_object->leave_link ($map, $x, $y)
		1468
		1469	Moves the player out of the specila link map onto the given map. If the
		1470	map is not valid (or omitted), the player will be moved back to the
		1471	location he/she was before the call to C<enter_link>, or, if that fails,
		1472	to the emergency map position.
		1473
		1474	Might block.
		1475
		1476	=cut
		1477
		1478	sub cf::object::player::enter_link {
		1479	my ($self) = @_;
		1480
		1481	$self->deactivate_recursive;
		1482
		1483	return if $self->map == $LINK_MAP;
		1484
		1485	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1486	if $self->map;
		1487
		1488	$self->enter_map ($LINK_MAP, 20, 20);
		1489	}
		1490
		1491	sub cf::object::player::leave_link {
		1492	my ($self, $map, $x, $y) = @_;
		1493
		1494	my $link_pos = delete $self->{_link_pos};
		1495
		1496	unless ($map) {
		1497	# restore original map position
		1498	($map, $x, $y) = @{ $link_pos || [] };
		1499	$map = cf::map::find_map $map;
		1500
		1501	unless ($map) {
		1502	($map, $x, $y) = @$EMERGENCY_POSITION;
		1503	$map = cf::map::find_map $map
		1504	or die "FATAL: cannot load emergency map\n";
		1505	}
		1506	}
		1507
		1508	($x, $y) = (-1, -1)
		1509	unless (defined $x) && (defined $y);
		1510
		1511	# use -1 or undef as default coordinates, not 0, 0
		1512	($x, $y) = ($map->enter_x, $map->enter_y)
		1513	if $x <=0 && $y <= 0;
		1514
		1515	$map->load;
		1516
		1517	$self->activate_recursive;
		1518	$self->enter_map ($map, $x, $y);
		1519	}
		1520
		1521	cf::player->attach (
		1522	on_logout => sub {
		1523	my ($pl) = @_;
		1524
		1525	# abort map switching before logout
		1526	if ($pl->ob->{_link_pos}) {
		1527	cf::sync_job {
		1528	$pl->ob->leave_link
		1529	};
		1530	}
		1531	},
		1532	on_login => sub {
		1533	my ($pl) = @_;
		1534
		1535	# try to abort aborted map switching on player login :)
		1536	# should happen only on crashes
		1537	if ($pl->ob->{_link_pos}) {
		1538	$pl->ob->enter_link;
		1539	Coro::async {
		1540	# we need this sleep as the login has a concurrent enter_exit running
		1541	# and this sleep increases chances of the player not ending up in scorn
		1542	Coro::Timer::sleep 1;
		1543	$pl->ob->leave_link;
		1544	};
		1545	}
		1546	},
		1547	);
		1548
		1549	=item $player_object->goto_map ($path, $x, $y)
		1550
		1551	=cut
		1552
		1553	sub cf::object::player::goto_map {
		1554	my ($self, $path, $x, $y) = @_;
		1555
		1556	$self->enter_link;
		1557
		1558	(Coro::async {
		1559	$path = new cf::path $path;
		1560
		1561	my $map = cf::map::find_map $path->as_string;
		1562	$map = $map->customise_for ($self) if $map;
		1563
		1564	# warn "entering ", $map->path, " at ($x, $y)\n"
		1565	# if $map;
		1566
		1567	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1568
		1569	$self->leave_link ($map, $x, $y);
		1570	})->prio (1);
		1571	}
		1572
		1573	=item $player_object->enter_exit ($exit_object)
		1574
		1575	=cut
		1576
		1577	sub parse_random_map_params {
		1578	my ($spec) = @_;
		1579
		1580	my $rmp = { # defaults
		1581	xsize => 10,
		1582	ysize => 10,
		1583	};
		1584
		1585	for (split /\n/, $spec) {
		1586	my ($k, $v) = split /\s+/, $_, 2;
		1587
		1588	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1589	}
		1590
		1591	$rmp
		1592	}
		1593
		1594	sub prepare_random_map {
		1595	my ($exit) = @_;
		1596
		1597	# all this does is basically replace the /! path by
		1598	# a new random map path (?random/...) with a seed
		1599	# that depends on the exit object
		1600
		1601	my $rmp = parse_random_map_params $exit->msg;
		1602
		1603	if ($exit->map) {
		1604	$rmp->{region} = $exit->map->region_name;
		1605	$rmp->{origin_map} = $exit->map->path;
		1606	$rmp->{origin_x} = $exit->x;
		1607	$rmp->{origin_y} = $exit->y;
		1608	}
		1609
		1610	$rmp->{random_seed} ||= $exit->random_seed;
		1611
		1612	my $data = cf::to_json $rmp;
		1613	my $md5 = Digest::MD5::md5_hex $data;
		1614
		1615	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1616	aio_write $fh, 0, (length $data), $data, 0;
		1617
		1618	$exit->slaying ("?random/$md5");
		1619	$exit->msg (undef);
		1620	}
		1621	}
		1622
		1623	sub cf::object::player::enter_exit {
		1624	my ($self, $exit) = @_;
		1625
		1626	return unless $self->type == cf::PLAYER;
		1627
		1628	$self->enter_link;
		1629
		1630	(Coro::async {
		1631	unless (eval {
		1632
		1633	prepare_random_map $exit
		1634	if $exit->slaying eq "/!";
		1635
		1636	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1637	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1638
		1639	1;
		1640	}) {
		1641	$self->message ("Something went wrong deep within the crossfire server. "
		1642	. "I'll try to bring you back to the map you were before. "
		1643	. "Please report this to the dungeon master",
		1644	cf::NDI_UNIQUE | cf::NDI_RED);
		1645
		1646	warn "ERROR in enter_exit: $@";
		1647	$self->leave_link;
		1648	}
		1649	})->prio (1);
		1650	}
		1651
		1652	=head3 cf::client
		1653
		1654	=over 4
		1655
		1656	=item $client->send_drawinfo ($text, $flags)
		1657
		1658	Sends a drawinfo packet to the client. Circumvents output buffering so
		1659	should not be used under normal circumstances.
		1660
		1661	=cut
		1662
		1663	sub cf::client::send_drawinfo {
		1664	my ($self, $text, $flags) = @_;
		1665
		1666	utf8::encode $text;
		1667	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1668	}
		1669
		1670
		1671	=item $success = $client->query ($flags, "text", \&cb)
		1672
		1673	Queues a query to the client, calling the given callback with
		1674	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1675	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1676
		1677	Queries can fail, so check the return code. Or don't, as queries will become
		1678	reliable at some point in the future.
		1679
		1680	=cut
		1681
		1682	sub cf::client::query {
		1683	my ($self, $flags, $text, $cb) = @_;
		1684
		1685	return unless $self->state == ST_PLAYING
		1686	|| $self->state == ST_SETUP
		1687	|| $self->state == ST_CUSTOM;
		1688
		1689	$self->state (ST_CUSTOM);
		1690
		1691	utf8::encode $text;
		1692	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1693
		1694	$self->send_packet ($self->{query_queue}[0][0])
		1695	if @{ $self->{query_queue} } == 1;
		1696	}
		1697
		1698	cf::client->attach (
		1699	on_reply => sub {
		1700	my ($ns, $msg) = @_;
		1701
		1702	# this weird shuffling is so that direct followup queries
		1703	# get handled first
		1704	my $queue = delete $ns->{query_queue};
		1705
		1706	(shift @$queue)->[1]->($msg);
		1707
		1708	push @{ $ns->{query_queue} }, @$queue;
		1709
		1710	if (@{ $ns->{query_queue} } == @$queue) {
		1711	if (@$queue) {
		1712	$ns->send_packet ($ns->{query_queue}[0][0]);
		1713	} else {
		1714	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1715	}
		1716	}
		1717	},
		1718	);
		1719
		1720	=item $client->coro (\&cb)
		1721
		1722	Create a new coroutine, running the specified callback. The coroutine will
		1723	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1724	or loss of connection).
		1725
		1726	=cut
		1727
		1728	sub cf::client::coro {
		1729	my ($self, $cb) = @_;
		1730
		1731	my $coro; $coro = async {
		1732	eval {
		1733	$cb->();
		1734	};
		1735	warn $@ if $@;
		1736	};
		1737
		1738	$coro->on_destroy (sub {
		1739	delete $self->{_coro}{$coro+0};
		1740	});
		1741
		1742	$self->{_coro}{$coro+0} = $coro;
		1743
		1744	$coro
		1745	}
		1746
		1747	cf::client->attach (
		1748	on_destroy => sub {
		1749	my ($ns) = @_;
		1750
		1751	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1752	},
		1753	);
		1754
		1755	=back
		1756
832		1757
833	=head2 SAFE SCRIPTING	1758	=head2 SAFE SCRIPTING
834		1759
835	Functions that provide a safe environment to compile and execute	1760	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1761	snippets of perl code without them endangering the safety of the server
…		…
988		1913
989	{	1914	{
990	my $path = cf::localdir . "/database.pst";	1915	my $path = cf::localdir . "/database.pst";
991		1916
992	sub db_load() {	1917	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	1918	$DB = stat $path ? Storable::retrieve $path : { };
995	}	1919	}
996		1920
997	my $pid;	1921	my $pid;
998		1922
999	sub db_save() {	1923	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	1924	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	1925	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	1926	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	1927	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	1928	rename "$path~", $path;
…		…
1056	local $/;	1979	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	1980	*CFG = YAML::Syck::Load <$fh>;
1058	}	1981	}
1059		1982
1060	sub main {	1983	sub main {
		1984	# we must not ever block the main coroutine
		1985	local $Coro::idle = sub {
		1986	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1987	(Coro::unblock_sub {
		1988	Event::one_event;
		1989	})->();
		1990	};
		1991
1061	cfg_load;	1992	cfg_load;
1062	db_load;	1993	db_load;
1063	load_extensions;	1994	load_extensions;
1064	Event::loop;	1995	Event::loop;
1065	}	1996	}
1066		1997
1067	#############################################################################	1998	#############################################################################
1068	# initialisation	1999	# initialisation
1069		2000
1070	sub _perl_reload(&) {	2001	sub reload() {
1071	my ($msg) = @_;	2002	# can/must only be called in main
		2003	if ($Coro::current != $Coro::main) {
		2004	warn "can only reload from main coroutine\n";
		2005	return;
		2006	}
1072		2007
1073	$msg->("reloading...");	2008	warn "reloading...";
		2009
		2010	local $FREEZE = 1;
		2011	cf::emergency_save;
1074		2012
1075	eval {	2013	eval {
		2014	# if anything goes wrong in here, we should simply crash as we already saved
		2015
1076	# cancel all watchers	2016	# cancel all watchers
1077	for (Event::all_watchers) {	2017	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2018	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2019	}
1080		2020
		2021	# cancel all extension coros
		2022	$_->cancel for values %EXT_CORO;
		2023	%EXT_CORO = ();
		2024
1081	# unload all extensions	2025	# unload all extensions
1082	for (@exts) {	2026	for (@exts) {
1083	$msg->("unloading <$_>");	2027	warn "unloading <$_>";
1084	unload_extension $_;	2028	unload_extension $_;
1085	}	2029	}
1086		2030
1087	# unload all modules loaded from $LIBDIR	2031	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2032	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2033	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2034
1091	$msg->("removing <$k>");	2035	warn "removing <$k>";
1092	delete $INC{$k};	2036	delete $INC{$k};
1093		2037
1094	$k =~ s/\.pm$//;	2038	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2039	$k =~ s/\//::/g;
1096		2040
…		…
1101	Symbol::delete_package $k;	2045	Symbol::delete_package $k;
1102	}	2046	}
1103		2047
1104	# sync database to disk	2048	# sync database to disk
1105	cf::db_sync;	2049	cf::db_sync;
		2050	IO::AIO::flush;
1106		2051
1107	# get rid of safe::, as good as possible	2052	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2053	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2054	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2055
1111	# remove register_script_function callbacks	2056	# remove register_script_function callbacks
1112	# TODO	2057	# TODO
1113		2058
1114	# unload cf.pm "a bit"	2059	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2062	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2063	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2064	#Symbol::delete_package __PACKAGE__;
1120		2065
1121	# reload cf.pm	2066	# reload cf.pm
1122	$msg->("reloading cf.pm");	2067	warn "reloading cf.pm";
1123	require cf;	2068	require cf;
		2069	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2070
1125	# load config and database again	2071	# load config and database again
1126	cf::cfg_load;	2072	cf::cfg_load;
1127	cf::db_load;	2073	cf::db_load;
1128		2074
1129	# load extensions	2075	# load extensions
1130	$msg->("load extensions");	2076	warn "load extensions";
1131	cf::load_extensions;	2077	cf::load_extensions;
1132		2078
1133	# reattach attachments to objects	2079	# reattach attachments to objects
1134	$msg->("reattach");	2080	warn "reattach";
1135	_global_reattach;	2081	_global_reattach;
1136	};	2082	};
1137	$msg->($@) if $@;
1138		2083
1139	$msg->("reloaded");	2084	if ($@) {
		2085	warn $@;
		2086	warn "error while reloading, exiting.";
		2087	exit 1;
		2088	}
		2089
		2090	warn "reloaded successfully";
1140	};	2091	};
1141		2092
1142	sub perl_reload() {	2093	#############################################################################
1143	_perl_reload {	2094
1144	warn $_[0];	2095	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2096	$LINK_MAP = cf::map::new;
1146	};	2097
		2098	$LINK_MAP->width (41);
		2099	$LINK_MAP->height (41);
		2100	$LINK_MAP->alloc;
		2101	$LINK_MAP->path ("{link}");
		2102	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2103	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2104
		2105	# dirty hack because... archetypes are not yet loaded
		2106	Event->timer (
		2107	after => 2,
		2108	cb => sub {
		2109	$_[0]->w->cancel;
		2110
		2111	# provide some exits "home"
		2112	my $exit = cf::object::new "exit";
		2113
		2114	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2115	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2116	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2117
		2118	$LINK_MAP->insert ($exit->clone, 19, 19);
		2119	$LINK_MAP->insert ($exit->clone, 19, 20);
		2120	$LINK_MAP->insert ($exit->clone, 19, 21);
		2121	$LINK_MAP->insert ($exit->clone, 20, 19);
		2122	$LINK_MAP->insert ($exit->clone, 20, 21);
		2123	$LINK_MAP->insert ($exit->clone, 21, 19);
		2124	$LINK_MAP->insert ($exit->clone, 21, 20);
		2125	$LINK_MAP->insert ($exit->clone, 21, 21);
		2126
		2127	$exit->destroy;
		2128	});
		2129
		2130	$LINK_MAP->{deny_save} = 1;
		2131	$LINK_MAP->{deny_reset} = 1;
		2132
		2133	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2134	}
1148		2135
1149	register "<global>", __PACKAGE__;	2136	register "<global>", __PACKAGE__;
1150		2137
1151	register_command "perl-reload" => sub {	2138	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2139	my ($who, $arg) = @_;
1153		2140
1154	if ($who->flag (FLAG_WIZ)) {	2141	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2142	$who->message ("start of reload.");
1156	warn $_[0];	2143	reload;
1157	$who->message ($_[0]);	2144	$who->message ("end of reload.");
1158	};
1159	}	2145	}
1160	};	2146	};
1161		2147
1162	unshift @INC, $LIBDIR;	2148	unshift @INC, $LIBDIR;
1163		2149
1164	$TICK_WATCHER = Event->timer (	2150	$TICK_WATCHER = Event->timer (
		2151	reentrant => 0,
1165	prio => 0,	2152	prio => 0,
1166	at => $NEXT_TICK || 1,	2153	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2154	data => WF_AUTOCANCEL,
1168	cb => sub {	2155	cb => sub {
		2156	unless ($FREEZE) {
1169	cf::server_tick; # one server iteration	2157	cf::server_tick; # one server iteration
		2158	$RUNTIME += $TICK;
		2159	}
1170		2160
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2161	$NEXT_TICK += $TICK;
1173		2162
1174	# if we are delayed by four ticks or more, skip them all	2163	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2164	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2165
1177	$TICK_WATCHER->at ($NEXT_TICK);	2166	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2167	$TICK_WATCHER->start;
1179	},	2168	},
1180	);	2169	);
1181		2170
1182	IO::AIO::max_poll_time $TICK * 0.2;	2171	IO::AIO::max_poll_time $TICK * 0.2;
1183		2172
		2173	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2174	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2175	poll => 'r',
1186	prio => 5,	2176	prio => 5,
1187	data => WF_AUTOCANCEL,	2177	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2178	cb => \&IO::AIO::poll_cb,
		2179	);
		2180
		2181	Event->timer (
		2182	data => WF_AUTOCANCEL,
		2183	after => 0,
		2184	interval => 10,
		2185	cb => sub {
		2186	(Coro::unblock_sub {
		2187	write_runtime
		2188	or warn "ERROR: unable to write runtime file: $!";
		2189	})->();
		2190	},
		2191	);
1189		2192
1190	1	2193	1
1191		2194

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