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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.106 by root, Sun Dec 31 17:29:22 2006 UTC vs.
Revision 1.255 by root, Thu Apr 19 16:23:47 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro 3.3;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
19		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
20	use Fcntl;	28	use Fcntl;
21	use IO::AIO 2.31 ();
22	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
23	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
24		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
25	use Event; $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
26		41
27	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
28	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
29		44
30	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
31		46
32	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
33		48
34	our %COMMAND = ();	49	our %COMMAND = ();
35	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
36	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
37		56
		57	our $RELOAD; # number of reloads so far
38	our @EVENT;	58	our @EVENT;
39	our $LIBDIR = datadir . "/ext";
40		59
41	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(!)
42	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
43	our $NEXT_TICK;	76	our $NEXT_TICK;
44	our $NOW;	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;
45		82
46	our %CFG;	83	our %CFG;
47		84
48	our $UPTIME; $UPTIME ||= time;	85	our $UPTIME; $UPTIME ||= time;
49	our $RUNTIME;	86	our $RUNTIME;
50		87
		88	our %PLAYER; # all users
51	our %MAP; # all maps	89	our %MAP; # all maps
52	our $LINK_MAP; # the special {link} map	90	our $LINK_MAP; # the special {link} map, which is always available
53	our $FREEZE;	91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
54		94
55	binmode STDOUT;	95	binmode STDOUT;
56	binmode STDERR;	96	binmode STDERR;
57		97
58	# read virtual server time, if available	98	# read virtual server time, if available
59	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
60	open my $fh, "<", cf::localdir . "/runtime"	100	open my $fh, "<", "$LOCALDIR/runtime"
61	or die "unable to read runtime file: $!";	101	or die "unable to read runtime file: $!";
62	$RUNTIME = <$fh> + 0.;	102	$RUNTIME = <$fh> + 0.;
63	}	103	}
64		104
65	mkdir cf::localdir;	105	mkdir $_
66	mkdir cf::localdir . "/" . cf::playerdir;	106	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
67	mkdir cf::localdir . "/" . cf::tmpdir;
68	mkdir cf::localdir . "/" . cf::uniquedir;
69		107
70	our %EXT_CORO;	108	our $EMERGENCY_POSITION;
		109
		110	sub cf::map::normalise;
71		111
72	#############################################################################	112	#############################################################################
73		113
74	=head2 GLOBAL VARIABLES	114	=head2 GLOBAL VARIABLES
75		115
…		…
82	=item $cf::RUNTIME	122	=item $cf::RUNTIME
83		123
84	The time this server has run, starts at 0 and is increased by $cf::TICK on	124	The time this server has run, starts at 0 and is increased by $cf::TICK on
85	every server tick.	125	every server tick.
86		126
87	=item $cf::LIBDIR	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
88		130
89	The perl library directory, where extensions and cf-specific modules can	131	Various directories - "/etc", read-only install directory, perl-library
90	be found. It will be added to C<@INC> automatically.	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.
91		135
92	=item $cf::NOW	136	=item $cf::NOW
93		137
94	The time of the last (current) server tick.	138	The time of the last (current) server tick.
95		139
…		…
99		143
100	=item %cf::CFG	144	=item %cf::CFG
101		145
102	Configuration for the server, loaded from C</etc/crossfire/config>, or	146	Configuration for the server, loaded from C</etc/crossfire/config>, or
103	from wherever your confdir points to.	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.
104		154
105	=back	155	=back
106		156
107	=cut	157	=cut
108		158
109	BEGIN {	159	BEGIN {
110	*CORE::GLOBAL::warn = sub {	160	*CORE::GLOBAL::warn = sub {
111	my $msg = join "", @_;	161	my $msg = join "", @_;
112	utf8::encode $msg;
113		162
114	$msg .= "\n"	163	$msg .= "\n"
115	unless $msg =~ /\n$/;	164	unless $msg =~ /\n$/;
116		165
		166	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		167
		168	utf8::encode $msg;
117	LOG llevError, "cfperl: $msg";	169	LOG llevError, $msg;
118	};	170	};
119	}	171	}
120		172
121	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
122	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
140		192
141	$Event::DIED = sub {	193	$Event::DIED = sub {
142	warn "error in event callback: @_";	194	warn "error in event callback: @_";
143	};	195	};
144		196
145	my %ext_pkg;
146	my @exts;
147	my @hook;
148
149	=head2 UTILITY FUNCTIONS	197	=head2 UTILITY FUNCTIONS
150		198
151	=over 4	199	=over 4
152		200
153	=cut	201	=item dumpval $ref
154		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
155	use JSON::Syck (); # TODO# replace by JSON::PC once working	224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
156		225
157	=item $ref = cf::from_json $json	226	=item $ref = cf::from_json $json
158		227
159	Converts a JSON string into the corresponding perl data structure.	228	Converts a JSON string into the corresponding perl data structure.
160		229
161	=cut
162
163	sub from_json($) {
164	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
165	JSON::Syck::Load $_[0]
166	}
167
168	=item $json = cf::to_json $ref	230	=item $json = cf::to_json $ref
169		231
170	Converts a perl data structure into its JSON representation.	232	Converts a perl data structure into its JSON representation.
171		233
172	=cut	234	=item cf::lock_wait $string
173		235
174	sub to_json($) {	236	Wait until the given lock is available. See cf::lock_acquire.
175	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	237
176	JSON::Syck::Dump $_[0]	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} }, $Coro::current;
		262	Coro::schedule;
		263	}
177	}	264	}
		265
		266	sub lock_acquire($) {
		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	$guard
		294	}
		295
		296	=item cf::async { BLOCK }
		297
		298	Currently the same as Coro::async_pool, meaning you cannot use
		299	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		300	thing you are allowed to do is call C<prio> on it.
		301
		302	=cut
		303
		304	BEGIN { *async = \&Coro::async_pool }
178		305
179	=item cf::sync_job { BLOCK }	306	=item cf::sync_job { BLOCK }
180		307
181	The design of crossfire+ requires that the main coro ($Coro::main) is	308	The design of crossfire+ requires that the main coro ($Coro::main) is
182	always able to handle events or runnable, as crossfire+ is only partly	309	always able to handle events or runnable, as crossfire+ is only partly
…		…
190	=cut	317	=cut
191		318
192	sub sync_job(&) {	319	sub sync_job(&) {
193	my ($job) = @_;	320	my ($job) = @_;
194		321
195	my $busy = 1;
196	my @res;
197
198	# TODO: use suspend/resume instead
199	local $FREEZE = 1;
200
201	my $coro = Coro::async {
202	@res = eval { $job->() };
203	warn $@ if $@;
204	undef $busy;
205	};
206
207	if ($Coro::current == $Coro::main) {	322	if ($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;
208	$coro->prio (Coro::PRIO_MAX);	337	})->prio (Coro::PRIO_MAX);
		338
209	while ($busy) {	339	while ($busy) {
210	Coro::cede_notself;	340	Coro::cede or Event::one_event;
211	Event::one_event unless Coro::nready;
212	}	341	}
		342
		343	wantarray ? @res : $res[0]
213	} else {	344	} else {
214	$coro->join;	345	# we are in another coroutine, how wonderful, everything just works
		346
		347	$job->()
215	}	348	}
216
217	wantarray ? @res : $res[0]
218	}	349	}
219		350
220	=item $coro = cf::coro { BLOCK }	351	=item $coro = cf::async_ext { BLOCK }
221		352
222	Creates and returns a new coro. This coro is automcatially being canceled	353	Like async, but this coro is automatically being canceled when the
223	when the extension calling this is being unloaded.	354	extension calling this is being unloaded.
224		355
225	=cut	356	=cut
226		357
227	sub coro(&) {	358	sub async_ext(&) {
228	my $cb = shift;	359	my $cb = shift;
229		360
230	my $coro; $coro = async {	361	my $coro = &Coro::async ($cb);
231	eval {
232	$cb->();
233	};
234	warn $@ if $@;
235	};
236		362
237	$coro->on_destroy (sub {	363	$coro->on_destroy (sub {
238	delete $EXT_CORO{$coro+0};	364	delete $EXT_CORO{$coro+0};
239	});	365	});
240	$EXT_CORO{$coro+0} = $coro;	366	$EXT_CORO{$coro+0} = $coro;
241		367
242	$coro	368	$coro
		369	}
		370
		371	sub write_runtime {
		372	my $guard = cf::lock_acquire "write_runtime";
		373
		374	my $runtime = "$LOCALDIR/runtime";
		375
		376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		377	or return;
		378
		379	my $value = $cf::RUNTIME + 90 + 10;
		380	# 10 is the runtime save interval, for a monotonic clock
		381	# 60 allows for the watchdog to kill the server.
		382
		383	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		384	and return;
		385
		386	# always fsync - this file is important
		387	aio_fsync $fh
		388	and return;
		389
		390	close $fh
		391	or return;
		392
		393	aio_rename "$runtime~", $runtime
		394	and return;
		395
		396	1
		397	}
		398
		399	=item cf::datalog type => key => value, ...
		400
		401	Log a datalog packet of the given type with the given key-value pairs.
		402
		403	=cut
		404
		405	sub datalog($@) {
		406	my ($type, %kv) = @_;
		407	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
243	}	408	}
244		409
245	=back	410	=back
246		411
247	=cut	412	=cut
…		…
378	our @CB_TYPE = (); # registry for type (cf-object class) based events	543	our @CB_TYPE = (); # registry for type (cf-object class) based events
379	our @CB_MAP = ();	544	our @CB_MAP = ();
380		545
381	my %attachment;	546	my %attachment;
382		547
		548	sub cf::attachable::thawer_merge {
		549	# simply override everything except _meta
		550	local $_[0]{_meta};
		551	%{$_[0]} = %{$_[1]};
		552	}
		553
383	sub _attach_cb($$$$) {	554	sub _attach_cb($$$$) {
384	my ($registry, $event, $prio, $cb) = @_;	555	my ($registry, $event, $prio, $cb) = @_;
385		556
386	use sort 'stable';	557	use sort 'stable';
387		558
…		…
558	# object support	729	# object support
559		730
560	sub reattach {	731	sub reattach {
561	# basically do the same as instantiate, without calling instantiate	732	# basically do the same as instantiate, without calling instantiate
562	my ($obj) = @_;	733	my ($obj) = @_;
		734
		735	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
563		736
564	my $registry = $obj->registry;	737	my $registry = $obj->registry;
565		738
566	@$registry = ();	739	@$registry = ();
567		740
…		…
614	$filename, length $$rdata, scalar @$objs;	787	$filename, length $$rdata, scalar @$objs;
615		788
616	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	789	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
617	chmod SAVE_MODE, $fh;	790	chmod SAVE_MODE, $fh;
618	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	791	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
619	aio_fsync $fh;	792	aio_fsync $fh if $cf::USE_FSYNC;
620	close $fh;	793	close $fh;
621		794
622	if (@$objs) {	795	if (@$objs) {
623	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	796	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
624	chmod SAVE_MODE, $fh;	797	chmod SAVE_MODE, $fh;
625	my $data = Storable::nfreeze { version => 1, objs => $objs };	798	my $data = Storable::nfreeze { version => 1, objs => $objs };
626	aio_write $fh, 0, (length $data), $data, 0;	799	aio_write $fh, 0, (length $data), $data, 0;
627	aio_fsync $fh;	800	aio_fsync $fh if $cf::USE_FSYNC;
628	close $fh;	801	close $fh;
629	aio_rename "$filename.pst~", "$filename.pst";	802	aio_rename "$filename.pst~", "$filename.pst";
630	}	803	}
631	} else {	804	} else {
632	aio_unlink "$filename.pst";	805	aio_unlink "$filename.pst";
…		…
660	or return;	833	or return;
661		834
662	unless (aio_stat "$filename.pst") {	835	unless (aio_stat "$filename.pst") {
663	(aio_load "$filename.pst", $av) >= 0	836	(aio_load "$filename.pst", $av) >= 0
664	or return;	837	or return;
665	$av = eval { (Storable::thaw <$av>)->{objs} };	838	$av = eval { (Storable::thaw $av)->{objs} };
666	}	839	}
667		840
		841	warn sprintf "loading %s (%d)\n",
		842	$filename, length $data, scalar @{$av || []};#d#
668	return ($data, $av);	843	return ($data, $av);
669	}	844	}
670		845
671	#############################################################################	846	#############################################################################
672	# command handling &c	847	# command handling &c
…		…
697	=cut	872	=cut
698		873
699	sub register_extcmd {	874	sub register_extcmd {
700	my ($name, $cb) = @_;	875	my ($name, $cb) = @_;
701		876
702	my $caller = caller;
703	#warn "registering extcmd '$name' to '$caller'";
704
705	$EXTCMD{$name} = [$cb, $caller];	877	$EXTCMD{$name} = $cb;
706	}	878	}
707		879
708	cf::player->attach (	880	cf::player->attach (
709	on_command => sub {	881	on_command => sub {
710	my ($pl, $name, $params) = @_;	882	my ($pl, $name, $params) = @_;
…		…
723		895
724	my $msg = eval { from_json $buf };	896	my $msg = eval { from_json $buf };
725		897
726	if (ref $msg) {	898	if (ref $msg) {
727	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
728	if (my %reply = $cb->[0]->($pl, $msg)) {	900	if (my %reply = $cb->($pl, $msg)) {
729	$pl->ext_reply ($msg->{msgid}, %reply);	901	$pl->ext_reply ($msg->{msgid}, %reply);
730	}	902	}
731	}	903	}
732	} else {	904	} else {
733	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	905	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
735		907
736	cf::override;	908	cf::override;
737	},	909	},
738	);	910	);
739		911
740	sub register {
741	my ($base, $pkg) = @_;
742
743	#TODO
744	}
745
746	sub load_extension {	912	sub load_extension {
747	my ($path) = @_;	913	my ($path) = @_;
748		914
749	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
750	my $base = $1;	916	my $base = $1;
751	my $pkg = $1;	917	my $pkg = $1;
752	$pkg =~ s/[^[:word:]]/_/g;	918	$pkg =~ s/[^[:word:]]/_/g;
753	$pkg = "ext::$pkg";	919	$pkg = "ext::$pkg";
754		920
755	warn "loading '$path' into '$pkg'\n";	921	warn "... loading '$path' into '$pkg'\n";
756		922
757	open my $fh, "<:utf8", $path	923	open my $fh, "<:utf8", $path
758	or die "$path: $!";	924	or die "$path: $!";
759		925
760	my $source =	926	my $source =
761	"package $pkg; use strict; use utf8;\n"	927	"package $pkg; use strict; use utf8;\n"
762	. "#line 1 \"$path\"\n{\n"	928	. "#line 1 \"$path\"\n{\n"
763	. (do { local $/; <$fh> })	929	. (do { local $/; <$fh> })
764	. "\n};\n1";	930	. "\n};\n1";
765		931
766	eval $source	932	unless (eval $source) {
767	or die $@ ? "$path: $@\n"	933	my $msg = $@ ? "$path: $@\n"
768	: "extension disabled.\n";	934	: "extension disabled.\n";
769		935	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
770	push @exts, $pkg;	936	warn $@;
771	$ext_pkg{$base} = $pkg;	937	warn "mandatory extension failed to load, exiting.\n";
772		938	exit 1;
773	# no strict 'refs';	939	}
774	# @{"$pkg\::ISA"} = ext::;	940	die $@;
775
776	register $base, $pkg;
777	}
778
779	sub unload_extension {
780	my ($pkg) = @_;
781
782	warn "removing extension $pkg\n";
783
784	# remove hooks
785	#TODO
786	# for my $idx (0 .. $#PLUGIN_EVENT) {
787	# delete $hook[$idx]{$pkg};
788	# }	941	}
789		942
790	# remove commands	943	push @EXTS, $pkg;
791	for my $name (keys %COMMAND) {
792	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
793
794	if (@cb) {
795	$COMMAND{$name} = \@cb;
796	} else {
797	delete $COMMAND{$name};
798	}
799	}
800
801	# remove extcmds
802	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
803	delete $EXTCMD{$name};
804	}
805
806	if (my $cb = $pkg->can ("unload")) {
807	eval {
808	$cb->($pkg);
809	1
810	} or warn "$pkg unloaded, but with errors: $@";
811	}
812
813	Symbol::delete_package $pkg;
814	}	944	}
815		945
816	sub load_extensions {	946	sub load_extensions {
817	for my $ext (<$LIBDIR/*.ext>) {	947	for my $ext (<$LIBDIR/*.ext>) {
818	next unless -r $ext;	948	next unless -r $ext;
…		…
822	} or warn "$ext not loaded: $@";	952	} or warn "$ext not loaded: $@";
823	}	953	}
824	}	954	}
825		955
826	#############################################################################	956	#############################################################################
827	# load/save/clean perl data associated with a map
828		957
829	*cf::mapsupport::on_clean = sub {	958	=head2 CORE EXTENSIONS
		959
		960	Functions and methods that extend core crossfire objects.
		961
		962	=cut
		963
		964	package cf::player;
		965
		966	use Coro::AIO;
		967
		968	=head3 cf::player
		969
		970	=over 4
		971
		972	=item cf::player::find $login
		973
		974	Returns the given player object, loading it if necessary (might block).
		975
		976	=cut
		977
		978	sub playerdir($) {
		979	"$PLAYERDIR/"
		980	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		981	}
		982
		983	sub path($) {
		984	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		985
		986	(playerdir $login) . "/playerdata"
		987	}
		988
		989	sub find_active($) {
		990	$cf::PLAYER{$_[0]}
		991	and $cf::PLAYER{$_[0]}->active
		992	and $cf::PLAYER{$_[0]}
		993	}
		994
		995	sub exists($) {
		996	my ($login) = @_;
		997
		998	$cf::PLAYER{$login}
		999	or cf::sync_job { !aio_stat path $login }
		1000	}
		1001
		1002	sub find($) {
		1003	return $cf::PLAYER{$_[0]} || do {
		1004	my $login = $_[0];
		1005
		1006	my $guard = cf::lock_acquire "user_find:$login";
		1007
		1008	$cf::PLAYER{$_[0]} || do {
		1009	# rename old playerfiles to new ones
		1010	#TODO: remove when no longer required
		1011	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1012	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1013	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1014	aio_unlink +(playerdir $login) . "/$login.pl";
		1015
		1016	my $pl = load_pl path $login
		1017	or return;
		1018	$cf::PLAYER{$login} = $pl
		1019	}
		1020	}
		1021	}
		1022
		1023	sub save($) {
		1024	my ($pl) = @_;
		1025
		1026	return if $pl->{deny_save};
		1027
		1028	my $path = path $pl;
		1029	my $guard = cf::lock_acquire "user_save:$path";
		1030
		1031	return if $pl->{deny_save};
		1032
		1033	aio_mkdir playerdir $pl, 0770;
		1034	$pl->{last_save} = $cf::RUNTIME;
		1035
		1036	$pl->save_pl ($path);
		1037	Coro::cede;
		1038	}
		1039
		1040	sub new($) {
		1041	my ($login) = @_;
		1042
		1043	my $self = create;
		1044
		1045	$self->ob->name ($login);
		1046	$self->{deny_save} = 1;
		1047
		1048	$cf::PLAYER{$login} = $self;
		1049
		1050	$self
		1051	}
		1052
		1053	=item $pl->quit_character
		1054
		1055	Nukes the player without looking back. If logged in, the connection will
		1056	be destroyed. May block for a long time.
		1057
		1058	=cut
		1059
		1060	sub quit_character {
		1061	my ($pl) = @_;
		1062
		1063	my $name = $pl->ob->name;
		1064
		1065	$pl->{deny_save} = 1;
		1066	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1067
		1068	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1069	$pl->deactivate;
		1070	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1071	$pl->ns->destroy if $pl->ns;
		1072
		1073	my $path = playerdir $pl;
		1074	my $temp = "$path~$cf::RUNTIME~deleting~";
		1075	aio_rename $path, $temp;
		1076	delete $cf::PLAYER{$pl->ob->name};
		1077	$pl->destroy;
		1078
		1079	my $prefix = qr<^~\Q$name\E/>;
		1080
		1081	# nuke player maps
		1082	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1083
		1084	IO::AIO::aio_rmtree $temp;
		1085	}
		1086
		1087	=item $pl->kick
		1088
		1089	Kicks a player out of the game. This destroys the connection.
		1090
		1091	=cut
		1092
		1093	sub kick {
		1094	my ($pl, $kicker) = @_;
		1095
		1096	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1097	$pl->killer ("kicked");
		1098	$pl->ns->destroy;
		1099	}
		1100
		1101	=item cf::player::list_logins
		1102
		1103	Returns am arrayref of all valid playernames in the system, can take a
		1104	while and may block, so not sync_job-capable, ever.
		1105
		1106	=cut
		1107
		1108	sub list_logins {
		1109	my $dirs = aio_readdir $PLAYERDIR
		1110	or return [];
		1111
		1112	my @logins;
		1113
		1114	for my $login (@$dirs) {
		1115	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1116	aio_read $fh, 0, 512, my $buf, 0 or next;
		1117	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1118
		1119	utf8::decode $login;
		1120	push @logins, $login;
		1121	}
		1122
		1123	\@logins
		1124	}
		1125
		1126	=item $player->maps
		1127
		1128	Returns an arrayref of map paths that are private for this
		1129	player. May block.
		1130
		1131	=cut
		1132
		1133	sub maps($) {
		1134	my ($pl) = @_;
		1135
		1136	$pl = ref $pl ? $pl->ob->name : $pl;
		1137
		1138	my $files = aio_readdir playerdir $pl
		1139	or return;
		1140
		1141	my @paths;
		1142
		1143	for (@$files) {
		1144	utf8::decode $_;
		1145	next if /\.(?:pl|pst)$/;
		1146	next unless /^$PATH_SEP/o;
		1147
		1148	push @paths, cf::map::normalise "~$pl/$_";
		1149	}
		1150
		1151	\@paths
		1152	}
		1153
		1154	=item $player->ext_reply ($msgid, %msg)
		1155
		1156	Sends an ext reply to the player.
		1157
		1158	=cut
		1159
		1160	sub ext_reply($$%) {
		1161	my ($self, $id, %msg) = @_;
		1162
		1163	$msg{msgid} = $id;
		1164
		1165	$self->send ("ext " . cf::to_json \%msg);
		1166	}
		1167
		1168	=item $player->ext_event ($type, %msg)
		1169
		1170	Sends an ext event to the client.
		1171
		1172	=cut
		1173
		1174	sub ext_event($$%) {
		1175	my ($self, $type, %msg) = @_;
		1176
		1177	$self->ns->ext_event ($type, %msg);
		1178	}
		1179
		1180	=head3 cf::region
		1181
		1182	=over 4
		1183
		1184	=cut
		1185
		1186	package cf::region;
		1187
		1188	=item cf::region::find_by_path $path
		1189
		1190	Tries to decuce the probable region for a map knowing only its path.
		1191
		1192	=cut
		1193
		1194	sub find_by_path($) {
		1195	my ($path) = @_;
		1196
		1197	my ($match, $specificity);
		1198
		1199	for my $region (list) {
		1200	if ($region->match && $path =~ $region->match) {
		1201	($match, $specificity) = ($region, $region->specificity)
		1202	if $region->specificity > $specificity;
		1203	}
		1204	}
		1205
		1206	$match
		1207	}
		1208
		1209	=back
		1210
		1211	=head3 cf::map
		1212
		1213	=over 4
		1214
		1215	=cut
		1216
		1217	package cf::map;
		1218
		1219	use Fcntl;
		1220	use Coro::AIO;
		1221
		1222	use overload
		1223	'""' => \&as_string,
		1224	fallback => 1;
		1225
		1226	our $MAX_RESET = 3600;
		1227	our $DEFAULT_RESET = 3000;
		1228
		1229	sub generate_random_map {
		1230	my ($self, $rmp) = @_;
		1231	# mit "rum" bekleckern, nicht
		1232	$self->_create_random_map (
		1233	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1234	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1235	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1236	$rmp->{exit_on_final_map},
		1237	$rmp->{xsize}, $rmp->{ysize},
		1238	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1239	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1240	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1241	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1242	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1243	(cf::region::find $rmp->{region}), $rmp->{custom}
		1244	)
		1245	}
		1246
		1247	=item cf::map->register ($regex, $prio)
		1248
		1249	Register a handler for the map path matching the given regex at the
		1250	givne priority (higher is better, built-in handlers have priority 0, the
		1251	default).
		1252
		1253	=cut
		1254
		1255	sub register {
		1256	my (undef, $regex, $prio) = @_;
		1257	my $pkg = caller;
		1258
		1259	no strict;
		1260	push @{"$pkg\::ISA"}, __PACKAGE__;
		1261
		1262	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1263	}
		1264
		1265	# also paths starting with '/'
		1266	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1267
		1268	sub thawer_merge {
		1269	my ($self, $merge) = @_;
		1270
		1271	# we have to keep some variables in memory intact
		1272	local $self->{path};
		1273	local $self->{load_path};
		1274	local $self->{deny_save};
		1275	local $self->{deny_reset};
		1276
		1277	$self->SUPER::thawer_merge ($merge);
		1278	}
		1279
		1280	sub normalise {
		1281	my ($path, $base) = @_;
		1282
		1283	$path = "$path"; # make sure its a string
		1284
		1285	$path =~ s/\.map$//;
		1286
		1287	# map plan:
		1288	#
		1289	# /! non-realised random map exit (special hack!)
		1290	# {... are special paths that are not being touched
		1291	# ?xxx/... are special absolute paths
		1292	# ?random/... random maps
		1293	# /... normal maps
		1294	# ~user/... per-player map of a specific user
		1295
		1296	$path =~ s/$PATH_SEP/\//go;
		1297
		1298	# treat it as relative path if it starts with
		1299	# something that looks reasonable
		1300	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1301	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1302
		1303	$base =~ s{[^/]+/?$}{};
		1304	$path = "$base/$path";
		1305	}
		1306
		1307	for ($path) {
		1308	redo if s{//}{/};
		1309	redo if s{/\.?/}{/};
		1310	redo if s{/[^/]+/\.\./}{/};
		1311	}
		1312
		1313	$path
		1314	}
		1315
		1316	sub new_from_path {
		1317	my (undef, $path, $base) = @_;
		1318
		1319	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1320
		1321	$path = normalise $path, $base;
		1322
		1323	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1324	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1325	my $self = bless cf::map::new, $pkg;
		1326	$self->{path} = $path; $self->path ($path);
		1327	$self->init; # pass $1 etc.
		1328	return $self;
		1329	}
		1330	}
		1331
		1332	Carp::carp "unable to resolve path '$path' (base '$base').";
		1333	()
		1334	}
		1335
		1336	sub init {
		1337	my ($self) = @_;
		1338
		1339	$self
		1340	}
		1341
		1342	sub as_string {
		1343	my ($self) = @_;
		1344
		1345	"$self->{path}"
		1346	}
		1347
		1348	# the displayed name, this is a one way mapping
		1349	sub visible_name {
		1350	&as_string
		1351	}
		1352
		1353	# the original (read-only) location
		1354	sub load_path {
		1355	my ($self) = @_;
		1356
		1357	"$MAPDIR/$self->{path}.map"
		1358	}
		1359
		1360	# the temporary/swap location
		1361	sub save_path {
		1362	my ($self) = @_;
		1363
		1364	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1365	"$TMPDIR/$path.map"
		1366	}
		1367
		1368	# the unique path, undef == no special unique path
		1369	sub uniq_path {
		1370	my ($self) = @_;
		1371
		1372	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1373	"$UNIQUEDIR/$path"
		1374	}
		1375
		1376	# and all this just because we cannot iterate over
		1377	# all maps in C++...
		1378	sub change_all_map_light {
		1379	my ($change) = @_;
		1380
		1381	$_->change_map_light ($change)
		1382	for grep $_->outdoor, values %cf::MAP;
		1383	}
		1384
		1385	sub unlink_save {
		1386	my ($self) = @_;
		1387
		1388	utf8::encode (my $save = $self->save_path);
		1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1390	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1391	}
		1392
		1393	sub load_header_from($) {
		1394	my ($self, $path) = @_;
		1395
		1396	utf8::encode $path;
		1397	#aio_open $path, O_RDONLY, 0
		1398	# or return;
		1399
		1400	$self->_load_header ($path)
		1401	or return;
		1402
		1403	$self->{load_path} = $path;
		1404
		1405	1
		1406	}
		1407
		1408	sub load_header_orig {
		1409	my ($self) = @_;
		1410
		1411	$self->load_header_from ($self->load_path)
		1412	}
		1413
		1414	sub load_header_temp {
		1415	my ($self) = @_;
		1416
		1417	$self->load_header_from ($self->save_path)
		1418	}
		1419
		1420	sub prepare_temp {
		1421	my ($self) = @_;
		1422
		1423	$self->last_access ((delete $self->{last_access})
		1424	|| $cf::RUNTIME); #d#
		1425	# safety
		1426	$self->{instantiate_time} = $cf::RUNTIME
		1427	if $self->{instantiate_time} > $cf::RUNTIME;
		1428	}
		1429
		1430	sub prepare_orig {
		1431	my ($self) = @_;
		1432
		1433	$self->{load_original} = 1;
		1434	$self->{instantiate_time} = $cf::RUNTIME;
		1435	$self->last_access ($cf::RUNTIME);
		1436	$self->instantiate;
		1437	}
		1438
		1439	sub load_header {
		1440	my ($self) = @_;
		1441
		1442	if ($self->load_header_temp) {
		1443	$self->prepare_temp;
		1444	} else {
		1445	$self->load_header_orig
		1446	or return;
		1447	$self->prepare_orig;
		1448	}
		1449
		1450	$self->default_region (cf::region::find_by_path $self->{path})
		1451	unless $self->default_region;
		1452
		1453	1
		1454	}
		1455
		1456	sub find;
		1457	sub find {
		1458	my ($path, $origin) = @_;
		1459
		1460	$path = normalise $path, $origin && $origin->path;
		1461
		1462	cf::lock_wait "map_find:$path";
		1463
		1464	$cf::MAP{$path} || do {
		1465	my $guard = cf::lock_acquire "map_find:$path";
		1466	my $map = new_from_path cf::map $path
		1467	or return;
		1468
		1469	$map->{last_save} = $cf::RUNTIME;
		1470
		1471	$map->load_header
		1472	or return;
		1473
		1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1475	# doing this can freeze the server in a sync job, obviously
		1476	#$cf::WAIT_FOR_TICK->wait;
		1477	$map->reset;
		1478	undef $guard;
		1479	return find $path;
		1480	}
		1481
		1482	$cf::MAP{$path} = $map
		1483	}
		1484	}
		1485
		1486	sub pre_load { }
		1487	sub post_load { }
		1488
		1489	sub load {
		1490	my ($self) = @_;
		1491
		1492	local $self->{deny_reset} = 1; # loading can take a long time
		1493
		1494	my $path = $self->{path};
		1495	my $guard = cf::lock_acquire "map_load:$path";
		1496
		1497	return if $self->in_memory != cf::MAP_SWAPPED;
		1498
		1499	$self->in_memory (cf::MAP_LOADING);
		1500
		1501	$self->alloc;
		1502
		1503	$self->pre_load;
		1504	Coro::cede;
		1505
		1506	$self->_load_objects ($self->{load_path}, 1)
		1507	or return;
		1508
		1509	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1510	if delete $self->{load_original};
		1511
		1512	if (my $uniq = $self->uniq_path) {
		1513	utf8::encode $uniq;
		1514	if (aio_open $uniq, O_RDONLY, 0) {
		1515	$self->clear_unique_items;
		1516	$self->_load_objects ($uniq, 0);
		1517	}
		1518	}
		1519
		1520	Coro::cede;
		1521	# now do the right thing for maps
		1522	$self->link_multipart_objects;
		1523	Coro::cede;
		1524
		1525	unless ($self->{deny_activate}) {
		1526	$self->decay_objects;
		1527	$self->fix_auto_apply;
		1528	$self->update_buttons;
		1529	Coro::cede;
		1530	$self->set_darkness_map;
		1531	$self->difficulty ($self->estimate_difficulty)
		1532	unless $self->difficulty;
		1533	Coro::cede;
		1534	$self->activate;
		1535	Coro::cede;
		1536	}
		1537
		1538	$self->post_load;
		1539	Coro::cede;
		1540
		1541	$self->in_memory (cf::MAP_IN_MEMORY);
		1542	}
		1543
		1544	sub customise_for {
		1545	my ($self, $ob) = @_;
		1546
		1547	return find "~" . $ob->name . "/" . $self->{path}
		1548	if $self->per_player;
		1549
		1550	$self
		1551	}
		1552
		1553	# find and load all maps in the 3x3 area around a map
		1554	sub load_diag {
830	my ($map) = @_;	1555	my ($map) = @_;
831		1556
832	my $path = $map->tmpname;	1557	my @diag; # diagonal neighbours
833	defined $path or return;
834		1558
835	unlink "$path.pst";	1559	for (0 .. 3) {
836	};	1560	my $neigh = $map->tile_path ($_)
		1561	or next;
		1562	$neigh = find $neigh, $map
		1563	or next;
		1564	$neigh->load;
837		1565
838	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1566	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1567	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1568	}
839		1569
840	#############################################################################	1570	for (@diag) {
841	# load/save perl data associated with player->ob objects	1571	my $neigh = find @$_
842		1572	or next;
843	sub all_objects(@) {	1573	$neigh->load;
844	@_, map all_objects ($_->inv), @_	1574	}
845	}	1575	}
846		1576
847	# TODO: compatibility cruft, remove when no longer needed	1577	sub find_sync {
848	cf::player->attach (	1578	my ($path, $origin) = @_;
849	on_load => sub {
850	my ($pl, $path) = @_;
851		1579
852	for my $o (all_objects $pl->ob) {	1580	cf::sync_job { find $path, $origin }
853	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1581	}
854	$o->set_ob_key_value ("_perl_data");
855		1582
856	%$o = %{ Storable::thaw pack "H*", $value };	1583	sub do_load_sync {
		1584	my ($map) = @_;
		1585
		1586	cf::sync_job { $map->load };
		1587	}
		1588
		1589	our %MAP_PREFETCH;
		1590	our $MAP_PREFETCHER = undef;
		1591
		1592	sub find_async {
		1593	my ($path, $origin) = @_;
		1594
		1595	$path = normalise $path, $origin && $origin->{path};
		1596
		1597	if (my $map = $cf::MAP{$path}) {
		1598	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1599	}
		1600
		1601	undef $MAP_PREFETCH{$path};
		1602	$MAP_PREFETCHER ||= cf::async {
		1603	while (%MAP_PREFETCH) {
		1604	for my $path (keys %MAP_PREFETCH) {
		1605	my $map = find $path
		1606	or next;
		1607	$map->load;
		1608
		1609	delete $MAP_PREFETCH{$path};
857	}	1610	}
858	}	1611	}
		1612	undef $MAP_PREFETCHER;
		1613	};
		1614	$MAP_PREFETCHER->prio (6);
		1615
		1616	()
		1617	}
		1618
		1619	sub save {
		1620	my ($self) = @_;
		1621
		1622	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1623
		1624	$self->{last_save} = $cf::RUNTIME;
		1625
		1626	return unless $self->dirty;
		1627
		1628	my $save = $self->save_path; utf8::encode $save;
		1629	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1630
		1631	$self->{load_path} = $save;
		1632
		1633	return if $self->{deny_save};
		1634
		1635	local $self->{last_access} = $self->last_access;#d#
		1636
		1637	cf::async {
		1638	$_->contr->save for $self->players;
		1639	};
		1640
		1641	if ($uniq) {
		1642	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1643	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1644	} else {
		1645	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
859	},	1646	}
860	);	1647	}
861		1648
862	#############################################################################	1649	sub swap_out {
		1650	my ($self) = @_;
863		1651
864	=head2 CORE EXTENSIONS	1652	# save first because save cedes
		1653	$self->save;
865		1654
866	Functions and methods that extend core crossfire objects.	1655	my $lock = cf::lock_acquire "map_data:" . $self->path;
867		1656
868	=head3 cf::player	1657	return if $self->players;
		1658	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1659	return if $self->{deny_save};
		1660
		1661	$self->clear;
		1662	$self->in_memory (cf::MAP_SWAPPED);
		1663	}
		1664
		1665	sub reset_at {
		1666	my ($self) = @_;
		1667
		1668	# TODO: safety, remove and allow resettable per-player maps
		1669	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1670	return 1e99 if $self->{deny_reset};
		1671
		1672	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1673	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1674
		1675	$time + $to
		1676	}
		1677
		1678	sub should_reset {
		1679	my ($self) = @_;
		1680
		1681	$self->reset_at <= $cf::RUNTIME
		1682	}
		1683
		1684	sub reset {
		1685	my ($self) = @_;
		1686
		1687	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1688
		1689	return if $self->players;
		1690	return if $self->isa ("ext::map_per_player");#d#
		1691
		1692	warn "resetting map ", $self->path;#d#
		1693
		1694	$self->in_memory (cf::MAP_SWAPPED);
		1695
		1696	# need to save uniques path
		1697	unless ($self->{deny_save}) {
		1698	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1699
		1700	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1701	if $uniq;
		1702	}
		1703
		1704	delete $cf::MAP{$self->path};
		1705
		1706	$self->clear;
		1707
		1708	$_->clear_links_to ($self) for values %cf::MAP;
		1709
		1710	$self->unlink_save;
		1711	$self->destroy;
		1712	}
		1713
		1714	my $nuke_counter = "aaaa";
		1715
		1716	sub nuke {
		1717	my ($self) = @_;
		1718
		1719	delete $cf::MAP{$self->path};
		1720
		1721	$self->unlink_save;
		1722
		1723	bless $self, "cf::map";
		1724	delete $self->{deny_reset};
		1725	$self->{deny_save} = 1;
		1726	$self->reset_timeout (1);
		1727	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1728
		1729	$cf::MAP{$self->path} = $self;
		1730
		1731	$self->reset; # polite request, might not happen
		1732	}
		1733
		1734	=item cf::map::unique_maps
		1735
		1736	Returns an arrayref of paths of all shared maps that have
		1737	instantiated unique items. May block.
		1738
		1739	=cut
		1740
		1741	sub unique_maps() {
		1742	my $files = aio_readdir $UNIQUEDIR
		1743	or return;
		1744
		1745	my @paths;
		1746
		1747	for (@$files) {
		1748	utf8::decode $_;
		1749	next if /\.pst$/;
		1750	next unless /^$PATH_SEP/o;
		1751
		1752	push @paths, cf::map::normalise $_;
		1753	}
		1754
		1755	\@paths
		1756	}
		1757
		1758	package cf;
		1759
		1760	=back
		1761
		1762	=head3 cf::object
		1763
		1764	=cut
		1765
		1766	package cf::object;
869		1767
870	=over 4	1768	=over 4
871		1769
872	=item cf::player::exists $login	1770	=item $ob->inv_recursive
873		1771
874	Returns true when the given account exists.	1772	Returns the inventory of the object _and_ their inventories, recursively.
875		1773
876	=cut	1774	=cut
877		1775
878	sub cf::player::exists($) {	1776	sub inv_recursive_;
879	cf::player::find $_[0]	1777	sub inv_recursive_ {
880	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1778	map { $_, inv_recursive_ $_->inv } @_
881	}	1779	}
882		1780
883	=item $player->ext_reply ($msgid, $msgtype, %msg)	1781	sub inv_recursive {
884		1782	inv_recursive_ inv $_[0]
885	Sends an ext reply to the player.
886
887	=cut
888
889	sub cf::player::ext_reply($$$%) {
890	my ($self, $id, %msg) = @_;
891
892	$msg{msgid} = $id;
893
894	$self->send ("ext " . to_json \%msg);
895	}	1783	}
		1784
		1785	package cf;
896		1786
897	=back	1787	=back
898		1788
899	=head3 cf::object::player	1789	=head3 cf::object::player
900		1790
…		…
938	(ref $cf::CFG{"may_$access"}	1828	(ref $cf::CFG{"may_$access"}
939	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1829	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
940	: $cf::CFG{"may_$access"})	1830	: $cf::CFG{"may_$access"})
941	}	1831	}
942		1832
		1833	=item $player_object->enter_link
		1834
		1835	Freezes the player and moves him/her to a special map (C<{link}>).
		1836
		1837	The player should be reasonably safe there for short amounts of time. You
		1838	I<MUST> call C<leave_link> as soon as possible, though.
		1839
		1840	Will never block.
		1841
		1842	=item $player_object->leave_link ($map, $x, $y)
		1843
		1844	Moves the player out of the special C<{link}> map onto the specified
		1845	map. If the map is not valid (or omitted), the player will be moved back
		1846	to the location he/she was before the call to C<enter_link>, or, if that
		1847	fails, to the emergency map position.
		1848
		1849	Might block.
		1850
		1851	=cut
		1852
		1853	sub link_map {
		1854	unless ($LINK_MAP) {
		1855	$LINK_MAP = cf::map::find "{link}"
		1856	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1857	$LINK_MAP->load;
		1858	}
		1859
		1860	$LINK_MAP
		1861	}
		1862
		1863	sub cf::object::player::enter_link {
		1864	my ($self) = @_;
		1865
		1866	$self->deactivate_recursive;
		1867
		1868	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1869
		1870	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1871	if $self->map;
		1872
		1873	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1874	}
		1875
		1876	sub cf::object::player::leave_link {
		1877	my ($self, $map, $x, $y) = @_;
		1878
		1879	my $link_pos = delete $self->{_link_pos};
		1880
		1881	unless ($map) {
		1882	# restore original map position
		1883	($map, $x, $y) = @{ $link_pos || [] };
		1884	$map = cf::map::find $map;
		1885
		1886	unless ($map) {
		1887	($map, $x, $y) = @$EMERGENCY_POSITION;
		1888	$map = cf::map::find $map
		1889	or die "FATAL: cannot load emergency map\n";
		1890	}
		1891	}
		1892
		1893	($x, $y) = (-1, -1)
		1894	unless (defined $x) && (defined $y);
		1895
		1896	# use -1 or undef as default coordinates, not 0, 0
		1897	($x, $y) = ($map->enter_x, $map->enter_y)
		1898	if $x <=0 && $y <= 0;
		1899
		1900	$map->load;
		1901	$map->load_diag;
		1902
		1903	return unless $self->contr->active;
		1904	$self->activate_recursive;
		1905
		1906	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1907	$self->enter_map ($map, $x, $y);
		1908	}
		1909
		1910	cf::player->attach (
		1911	on_logout => sub {
		1912	my ($pl) = @_;
		1913
		1914	# abort map switching before logout
		1915	if ($pl->ob->{_link_pos}) {
		1916	cf::sync_job {
		1917	$pl->ob->leave_link
		1918	};
		1919	}
		1920	},
		1921	on_login => sub {
		1922	my ($pl) = @_;
		1923
		1924	# try to abort aborted map switching on player login :)
		1925	# should happen only on crashes
		1926	if ($pl->ob->{_link_pos}) {
		1927	$pl->ob->enter_link;
		1928	(async {
		1929	$pl->ob->reply (undef,
		1930	"There was an internal problem at your last logout, "
		1931	. "the server will try to bring you to your intended destination in a second.",
		1932	cf::NDI_RED);
		1933	# we need this sleep as the login has a concurrent enter_exit running
		1934	# and this sleep increases chances of the player not ending up in scorn
		1935	Coro::Timer::sleep 1;
		1936	$pl->ob->leave_link;
		1937	})->prio (2);
		1938	}
		1939	},
		1940	);
		1941
		1942	=item $player_object->goto ($path, $x, $y)
		1943
		1944	=cut
		1945
		1946	sub cf::object::player::goto {
		1947	my ($self, $path, $x, $y) = @_;
		1948
		1949	$self->enter_link;
		1950
		1951	(async {
		1952	my $map = eval {
		1953	my $map = cf::map::find $path;
		1954	$map = $map->customise_for ($self) if $map;
		1955	$map
		1956	} or
		1957	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1958
		1959	$self->leave_link ($map, $x, $y);
		1960	})->prio (1);
		1961	}
		1962
		1963	=item $player_object->enter_exit ($exit_object)
		1964
		1965	=cut
		1966
		1967	sub parse_random_map_params {
		1968	my ($spec) = @_;
		1969
		1970	my $rmp = { # defaults
		1971	xsize => (cf::rndm 15, 40),
		1972	ysize => (cf::rndm 15, 40),
		1973	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1974	#layout => string,
		1975	};
		1976
		1977	for (split /\n/, $spec) {
		1978	my ($k, $v) = split /\s+/, $_, 2;
		1979
		1980	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1981	}
		1982
		1983	$rmp
		1984	}
		1985
		1986	sub prepare_random_map {
		1987	my ($exit) = @_;
		1988
		1989	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1990
		1991	# all this does is basically replace the /! path by
		1992	# a new random map path (?random/...) with a seed
		1993	# that depends on the exit object
		1994
		1995	my $rmp = parse_random_map_params $exit->msg;
		1996
		1997	if ($exit->map) {
		1998	$rmp->{region} = $exit->region->name;
		1999	$rmp->{origin_map} = $exit->map->path;
		2000	$rmp->{origin_x} = $exit->x;
		2001	$rmp->{origin_y} = $exit->y;
		2002	}
		2003
		2004	$rmp->{random_seed} ||= $exit->random_seed;
		2005
		2006	my $data = cf::to_json $rmp;
		2007	my $md5 = Digest::MD5::md5_hex $data;
		2008	my $meta = "$RANDOMDIR/$md5.meta";
		2009
		2010	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2011	aio_write $fh, 0, (length $data), $data, 0;
		2012	undef $fh;
		2013	aio_rename "$meta~", $meta;
		2014
		2015	$exit->slaying ("?random/$md5");
		2016	$exit->msg (undef);
		2017	}
		2018	}
		2019
		2020	sub cf::object::player::enter_exit {
		2021	my ($self, $exit) = @_;
		2022
		2023	return unless $self->type == cf::PLAYER;
		2024
		2025	if ($exit->slaying eq "/!") {
		2026	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2027	# the problem is that $exit might not survive long enough
		2028	# so it needs to be done right now, right here
		2029	cf::sync_job { prepare_random_map $exit };
		2030	}
		2031
		2032	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2033	my $hp = $exit->stats->hp;
		2034	my $sp = $exit->stats->sp;
		2035
		2036	$self->enter_link;
		2037
		2038	(async {
		2039	$self->deactivate_recursive; # just to be sure
		2040	unless (eval {
		2041	$self->goto ($slaying, $hp, $sp);
		2042
		2043	1;
		2044	}) {
		2045	$self->message ("Something went wrong deep within the crossfire server. "
		2046	. "I'll try to bring you back to the map you were before. "
		2047	. "Please report this to the dungeon master!",
		2048	cf::NDI_UNIQUE | cf::NDI_RED);
		2049
		2050	warn "ERROR in enter_exit: $@";
		2051	$self->leave_link;
		2052	}
		2053	})->prio (1);
		2054	}
		2055
943	=head3 cf::client	2056	=head3 cf::client
944		2057
945	=over 4	2058	=over 4
946		2059
947	=item $client->send_drawinfo ($text, $flags)	2060	=item $client->send_drawinfo ($text, $flags)
…		…
953		2066
954	sub cf::client::send_drawinfo {	2067	sub cf::client::send_drawinfo {
955	my ($self, $text, $flags) = @_;	2068	my ($self, $text, $flags) = @_;
956		2069
957	utf8::encode $text;	2070	utf8::encode $text;
958	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2071	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
959	}	2072	}
960		2073
		2074	=item $client->ext_event ($type, %msg)
		2075
		2076	Sends an exti event to the client.
		2077
		2078	=cut
		2079
		2080	sub cf::client::ext_event($$%) {
		2081	my ($self, $type, %msg) = @_;
		2082
		2083	$msg{msgtype} = "event_$type";
		2084	$self->send_packet ("ext " . cf::to_json \%msg);
		2085	}
961		2086
962	=item $success = $client->query ($flags, "text", \&cb)	2087	=item $success = $client->query ($flags, "text", \&cb)
963		2088
964	Queues a query to the client, calling the given callback with	2089	Queues a query to the client, calling the given callback with
965	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2090	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
990	on_reply => sub {	2115	on_reply => sub {
991	my ($ns, $msg) = @_;	2116	my ($ns, $msg) = @_;
992		2117
993	# this weird shuffling is so that direct followup queries	2118	# this weird shuffling is so that direct followup queries
994	# get handled first	2119	# get handled first
995	my $queue = delete $ns->{query_queue};	2120	my $queue = delete $ns->{query_queue}
		2121	or return; # be conservative, not sure how that can happen, but we saw a crash here
996		2122
997	(shift @$queue)->[1]->($msg);	2123	(shift @$queue)->[1]->($msg);
		2124	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
998		2125
999	push @{ $ns->{query_queue} }, @$queue;	2126	push @{ $ns->{query_queue} }, @$queue;
1000		2127
1001	if (@{ $ns->{query_queue} } == @$queue) {	2128	if (@{ $ns->{query_queue} } == @$queue) {
1002	if (@$queue) {	2129	if (@$queue) {
…		…
1006	}	2133	}
1007	}	2134	}
1008	},	2135	},
1009	);	2136	);
1010		2137
1011	=item $client->coro (\&cb)	2138	=item $client->async (\&cb)
1012		2139
1013	Create a new coroutine, running the specified callback. The coroutine will	2140	Create a new coroutine, running the specified callback. The coroutine will
1014	be automatically cancelled when the client gets destroyed (e.g. on logout,	2141	be automatically cancelled when the client gets destroyed (e.g. on logout,
1015	or loss of connection).	2142	or loss of connection).
1016		2143
1017	=cut	2144	=cut
1018		2145
1019	sub cf::client::coro {	2146	sub cf::client::async {
1020	my ($self, $cb) = @_;	2147	my ($self, $cb) = @_;
1021		2148
1022	my $coro; $coro = async {	2149	my $coro = &Coro::async ($cb);
1023	eval {
1024	$cb->();
1025	};
1026	warn $@ if $@;
1027	};
1028		2150
1029	$coro->on_destroy (sub {	2151	$coro->on_destroy (sub {
1030	delete $self->{_coro}{$coro+0};	2152	delete $self->{_coro}{$coro+0};
1031	});	2153	});
1032		2154
…		…
1065		2187
1066	# here we export the classes and methods available to script code	2188	# here we export the classes and methods available to script code
1067		2189
1068	=pod	2190	=pod
1069		2191
1070	The following fucntions and emthods are available within a safe environment:	2192	The following functions and methods are available within a safe environment:
1071		2193
1072	cf::object contr pay_amount pay_player map	2194	cf::object contr pay_amount pay_player map
1073	cf::object::player player	2195	cf::object::player player
1074	cf::player peaceful	2196	cf::player peaceful
1075	cf::map trigger	2197	cf::map trigger
…		…
1160	#############################################################################	2282	#############################################################################
1161		2283
1162	=head2 EXTENSION DATABASE SUPPORT	2284	=head2 EXTENSION DATABASE SUPPORT
1163		2285
1164	Crossfire maintains a very simple database for extension use. It can	2286	Crossfire maintains a very simple database for extension use. It can
1165	currently store anything that can be serialised using Storable, which	2287	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1166	excludes objects.	2288	convert to/from binary).
1167		2289
1168	The parameter C<$family> should best start with the name of the extension	2290	The parameter C<$family> should best start with the name of the extension
1169	using it, it should be unique.	2291	using it, it should be unique.
1170		2292
1171	=over 4	2293	=over 4
1172		2294
1173	=item $hashref = cf::db_get $family
1174
1175	Return a hashref for use by the extension C<$family>, which can be
1176	modified. After modifications, you have to call C<cf::db_dirty> or
1177	C<cf::db_sync>.
1178
1179	=item $value = cf::db_get $family => $key	2295	=item $value = cf::db_get $family => $key
1180		2296
1181	Returns a single value from the database	2297	Returns a single value from the database.
1182
1183	=item cf::db_put $family => $hashref
1184
1185	Stores the given family hashref into the database. Updates are delayed, if
1186	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1187		2298
1188	=item cf::db_put $family => $key => $value	2299	=item cf::db_put $family => $key => $value
1189		2300
1190	Stores the given C<$value> in the family hash. Updates are delayed, if you	2301	Stores the given C<$value> in the family.
1191	want the data to be synced to disk immediately, use C<cf::db_sync>.
1192
1193	=item cf::db_dirty
1194
1195	Marks the database as dirty, to be updated at a later time.
1196
1197	=item cf::db_sync
1198
1199	Immediately write the database to disk I<if it is dirty>.
1200		2302
1201	=cut	2303	=cut
1202		2304
1203	our $DB;	2305	our $DB;
1204		2306
1205	{	2307	sub db_init {
1206	my $path = cf::localdir . "/database.pst";	2308	unless ($DB) {
		2309	$DB = BDB::db_create $DB_ENV;
1207		2310
1208	sub db_load() {	2311	cf::sync_job {
1209	warn "loading database $path\n";#d# remove later	2312	eval {
1210	$DB = stat $path ? Storable::retrieve $path : { };	2313	$DB->set_flags (BDB::CHKSUM);
1211	}
1212		2314
1213	my $pid;	2315	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1214		2316	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1215	sub db_save() {	2317	cf::cleanup "db_open(db): $!" if $!;
1216	warn "saving database $path\n";#d# remove later	2318	};
1217	waitpid $pid, 0 if $pid;	2319	cf::cleanup "db_open(db): $@" if $@;
1218	if (0 == ($pid = fork)) {
1219	$DB->{_meta}{version} = 1;
1220	Storable::nstore $DB, "$path~";
1221	rename "$path~", $path;
1222	cf::_exit 0 if defined $pid;
1223	}	2320	};
1224	}
1225
1226	my $dirty;
1227
1228	sub db_sync() {
1229	db_save if $dirty;
1230	undef $dirty;
1231	}
1232
1233	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1234	db_sync;
1235	});	2321	}
		2322	}
1236		2323
1237	sub db_dirty() {
1238	$dirty = 1;
1239	$idle->start;
1240	}
1241
1242	sub db_get($;$) {	2324	sub db_get($$) {
1243	@_ >= 2	2325	my $key = "$_[0]/$_[1]";
1244	? $DB->{$_[0]}{$_[1]}
1245	: ($DB->{$_[0]} ||= { })
1246	}
1247		2326
		2327	cf::sync_job {
		2328	BDB::db_get $DB, undef, $key, my $data;
		2329
		2330	$! ? ()
		2331	: $data
		2332	}
		2333	}
		2334
1248	sub db_put($$;$) {	2335	sub db_put($$$) {
1249	if (@_ >= 3) {	2336	BDB::dbreq_pri 4;
1250	$DB->{$_[0]}{$_[1]} = $_[2];	2337	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1251	} else {	2338	}
1252	$DB->{$_[0]} = $_[1];
1253	}
1254	db_dirty;
1255	}
1256		2339
1257	cf::global->attach (	2340	=item cf::cache $id => [$paths...], $processversion => $process
1258	prio => 10000,	2341
1259	on_cleanup => sub {	2342	Generic caching function that returns the value of the resource $id,
1260	db_sync;	2343	caching and regenerating as required.
		2344
		2345	This function can block.
		2346
		2347	=cut
		2348
		2349	sub cache {
		2350	my ($id, $src, $processversion, $process) = @_;
		2351
		2352	my $meta =
		2353	join "\x00",
		2354	$processversion,
		2355	map {
		2356	aio_stat $_
		2357	and Carp::croak "$_: $!";
		2358
		2359	($_, (stat _)[7,9])
		2360	} @$src;
		2361
		2362	my $dbmeta = db_get cache => "$id/meta";
		2363	if ($dbmeta ne $meta) {
		2364	# changed, we may need to process
		2365
		2366	my @data;
		2367	my $md5;
		2368
		2369	for (0 .. $#$src) {
		2370	0 <= aio_load $src->[$_], $data[$_]
		2371	or Carp::croak "$src->[$_]: $!";
1261	},	2372	}
1262	);	2373
		2374	# if processing is expensive, check
		2375	# checksum first
		2376	if (1) {
		2377	$md5 =
		2378	join "\x00",
		2379	$processversion,
		2380	map {
		2381	Coro::cede;
		2382	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2383	} 0.. $#$src;
		2384
		2385
		2386	my $dbmd5 = db_get cache => "$id/md5";
		2387	if ($dbmd5 eq $md5) {
		2388	db_put cache => "$id/meta", $meta;
		2389
		2390	return db_get cache => "$id/data";
		2391	}
		2392	}
		2393
		2394	my $t1 = Time::HiRes::time;
		2395	my $data = $process->(\@data);
		2396	my $t2 = Time::HiRes::time;
		2397
		2398	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2399
		2400	db_put cache => "$id/data", $data;
		2401	db_put cache => "$id/md5" , $md5;
		2402	db_put cache => "$id/meta", $meta;
		2403
		2404	return $data;
		2405	}
		2406
		2407	db_get cache => "$id/data"
1263	}	2408	}
		2409
		2410	=item fork_call { }, $args
		2411
		2412	Executes the given code block with the given arguments in a seperate
		2413	process, returning the results. Everything must be serialisable with
		2414	Coro::Storable. May, of course, block. Note that the executed sub may
		2415	never block itself or use any form of Event handling.
		2416
		2417	=cut
		2418
		2419	sub fork_call(&@) {
		2420	my ($cb, @args) = @_;
		2421
		2422	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2423	# or die "socketpair: $!";
		2424	pipe my $fh1, my $fh2
		2425	or die "pipe: $!";
		2426
		2427	if (my $pid = fork) {
		2428	close $fh2;
		2429
		2430	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2431	$res = Coro::Storable::thaw $res;
		2432
		2433	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2434
		2435	die $$res unless "ARRAY" eq ref $res;
		2436
		2437	return wantarray ? @$res : $res->[-1];
		2438	} else {
		2439	local $SIG{__WARN__};
		2440	eval {
		2441	local $SIG{__DIE__};
		2442	close $fh1;
		2443
		2444	my @res = eval { $cb->(@args) };
		2445	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2446	};
		2447
		2448	warn $@ if $@;
		2449	_exit 0;
		2450	}
		2451	}
		2452
		2453
1264		2454
1265	#############################################################################	2455	#############################################################################
1266	# the server's main()	2456	# the server's init and main functions
		2457
		2458	sub load_facedata($) {
		2459	my ($path) = @_;
		2460
		2461	warn "loading facedata from $path\n";
		2462
		2463	my $facedata;
		2464	0 < aio_load $path, $facedata
		2465	or die "$path: $!";
		2466
		2467	$facedata = Coro::Storable::thaw $facedata;
		2468
		2469	$facedata->{version} == 2
		2470	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2471
		2472	{
		2473	my $faces = $facedata->{faceinfo};
		2474
		2475	while (my ($face, $info) = each %$faces) {
		2476	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2477	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2478	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2479	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2480	Coro::cede;
		2481	}
		2482
		2483	while (my ($face, $info) = each %$faces) {
		2484	next unless $info->{smooth};
		2485	my $idx = cf::face::find $face
		2486	or next;
		2487	if (my $smooth = cf::face::find $info->{smooth}) {
		2488	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2489	} else {
		2490	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2491	}
		2492	Coro::cede;
		2493	}
		2494	}
		2495
		2496	{
		2497	my $anims = $facedata->{animinfo};
		2498
		2499	while (my ($anim, $info) = each %$anims) {
		2500	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2501	Coro::cede;
		2502	}
		2503
		2504	cf::anim::invalidate_all; # d'oh
		2505	}
		2506
		2507	1
		2508	}
		2509
		2510	sub reload_regions {
		2511	load_resource_file "$MAPDIR/regions"
		2512	or die "unable to load regions file\n";
		2513	}
		2514
		2515	sub reload_facedata {
		2516	load_facedata "$DATADIR/facedata"
		2517	or die "unable to load facedata\n";
		2518	}
		2519
		2520	sub reload_archetypes {
		2521	load_resource_file "$DATADIR/archetypes"
		2522	or die "unable to load archetypes\n";
		2523	}
		2524
		2525	sub reload_treasures {
		2526	load_resource_file "$DATADIR/treasures"
		2527	or die "unable to load treasurelists\n";
		2528	}
		2529
		2530	sub reload_resources {
		2531	warn "reloading resource files...\n";
		2532
		2533	reload_regions;
		2534	reload_facedata;
		2535	reload_archetypes;
		2536	reload_treasures;
		2537
		2538	warn "finished reloading resource files\n";
		2539	}
		2540
		2541	sub init {
		2542	reload_resources;
		2543	}
1267		2544
1268	sub cfg_load {	2545	sub cfg_load {
1269	open my $fh, "<:utf8", cf::confdir . "/config"	2546	open my $fh, "<:utf8", "$CONFDIR/config"
1270	or return;	2547	or return;
1271		2548
1272	local $/;	2549	local $/;
1273	*CFG = YAML::Syck::Load <$fh>;	2550	*CFG = YAML::Syck::Load <$fh>;
		2551
		2552	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2553
		2554	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2555	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2556
		2557	if (exists $CFG{mlockall}) {
		2558	eval {
		2559	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2560	and die "WARNING: m(un)lockall failed: $!\n";
		2561	};
		2562	warn $@ if $@;
		2563	}
1274	}	2564	}
1275		2565
1276	sub main {	2566	sub main {
		2567	# we must not ever block the main coroutine
		2568	local $Coro::idle = sub {
		2569	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2570	(async {
		2571	Event::one_event;
		2572	})->prio (Coro::PRIO_MAX);
		2573	};
		2574
1277	cfg_load;	2575	cfg_load;
1278	db_load;	2576	db_init;
1279	load_extensions;	2577	load_extensions;
		2578
		2579	$TICK_WATCHER->start;
1280	Event::loop;	2580	Event::loop;
1281	}	2581	}
1282		2582
1283	#############################################################################	2583	#############################################################################
1284	# initialisation	2584	# initialisation and cleanup
1285		2585
1286	sub _perl_reload() {	2586	# install some emergency cleanup handlers
		2587	BEGIN {
		2588	for my $signal (qw(INT HUP TERM)) {
		2589	Event->signal (
		2590	reentrant => 0,
		2591	data => WF_AUTOCANCEL,
		2592	signal => $signal,
		2593	prio => 0,
		2594	cb => sub {
		2595	cf::cleanup "SIG$signal";
		2596	},
		2597	);
		2598	}
		2599	}
		2600
		2601	sub emergency_save() {
		2602	my $freeze_guard = cf::freeze_mainloop;
		2603
		2604	warn "enter emergency perl save\n";
		2605
		2606	cf::sync_job {
		2607	# use a peculiar iteration method to avoid tripping on perl
		2608	# refcount bugs in for. also avoids problems with players
		2609	# and maps saved/destroyed asynchronously.
		2610	warn "begin emergency player save\n";
		2611	for my $login (keys %cf::PLAYER) {
		2612	my $pl = $cf::PLAYER{$login} or next;
		2613	$pl->valid or next;
		2614	$pl->save;
		2615	}
		2616	warn "end emergency player save\n";
		2617
		2618	warn "begin emergency map save\n";
		2619	for my $path (keys %cf::MAP) {
		2620	my $map = $cf::MAP{$path} or next;
		2621	$map->valid or next;
		2622	$map->save;
		2623	}
		2624	warn "end emergency map save\n";
		2625
		2626	warn "begin emergency database checkpoint\n";
		2627	BDB::db_env_txn_checkpoint $DB_ENV;
		2628	warn "end emergency database checkpoint\n";
		2629	};
		2630
		2631	warn "leave emergency perl save\n";
		2632	}
		2633
		2634	sub post_cleanup {
		2635	my ($make_core) = @_;
		2636
		2637	warn Carp::longmess "post_cleanup backtrace"
		2638	if $make_core;
		2639	}
		2640
		2641	sub do_reload_perl() {
1287	# can/must only be called in main	2642	# can/must only be called in main
1288	if ($Coro::current != $Coro::main) {	2643	if ($Coro::current != $Coro::main) {
1289	warn "can only reload from main coroutine\n";	2644	warn "can only reload from main coroutine";
1290	return;	2645	return;
1291	}	2646	}
1292		2647
1293	warn "reloading...";	2648	warn "reloading...";
1294		2649
1295	local $FREEZE = 1;	2650	warn "entering sync_job";
		2651
		2652	cf::sync_job {
		2653	cf::write_runtime; # external watchdog should not bark
1296	cf::emergency_save;	2654	cf::emergency_save;
		2655	cf::write_runtime; # external watchdog should not bark
1297		2656
1298	eval {	2657	warn "syncing database to disk";
		2658	BDB::db_env_txn_checkpoint $DB_ENV;
		2659
1299	# if anything goes wrong in here, we should simply crash as we already saved	2660	# if anything goes wrong in here, we should simply crash as we already saved
1300		2661
1301	# cancel all watchers	2662	warn "cancelling all WF_AUTOCANCEL watchers";
1302	for (Event::all_watchers) {	2663	for (Event::all_watchers) {
1303	$_->cancel if $_->data & WF_AUTOCANCEL;	2664	$_->cancel if $_->data & WF_AUTOCANCEL;
1304	}	2665	}
1305		2666
		2667	warn "flushing outstanding aio requests";
		2668	for (;;) {
		2669	BDB::flush;
		2670	IO::AIO::flush;
		2671	Coro::cede;
		2672	last unless IO::AIO::nreqs || BDB::nreqs;
		2673	warn "iterate...";
		2674	}
		2675
		2676	++$RELOAD;
		2677
1306	# cancel all extension coros	2678	warn "cancelling all extension coros";
1307	$_->cancel for values %EXT_CORO;	2679	$_->cancel for values %EXT_CORO;
1308	%EXT_CORO = ();	2680	%EXT_CORO = ();
1309		2681
1310	# unload all extensions	2682	warn "removing commands";
1311	for (@exts) {	2683	%COMMAND = ();
		2684
		2685	warn "removing ext commands";
		2686	%EXTCMD = ();
		2687
		2688	warn "unloading/nuking all extensions";
		2689	for my $pkg (@EXTS) {
1312	warn "unloading <$_>";	2690	warn "... unloading $pkg";
1313	unload_extension $_;	2691
		2692	if (my $cb = $pkg->can ("unload")) {
		2693	eval {
		2694	$cb->($pkg);
		2695	1
		2696	} or warn "$pkg unloaded, but with errors: $@";
1314	}	2697	}
1315		2698
		2699	warn "... nuking $pkg";
		2700	Symbol::delete_package $pkg;
		2701	}
		2702
1316	# unload all modules loaded from $LIBDIR	2703	warn "unloading all perl modules loaded from $LIBDIR";
1317	while (my ($k, $v) = each %INC) {	2704	while (my ($k, $v) = each %INC) {
1318	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2705	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1319		2706
1320	warn "removing <$k>";	2707	warn "... unloading $k";
1321	delete $INC{$k};	2708	delete $INC{$k};
1322		2709
1323	$k =~ s/\.pm$//;	2710	$k =~ s/\.pm$//;
1324	$k =~ s/\//::/g;	2711	$k =~ s/\//::/g;
1325		2712
…		…
1328	}	2715	}
1329		2716
1330	Symbol::delete_package $k;	2717	Symbol::delete_package $k;
1331	}	2718	}
1332		2719
1333	# sync database to disk
1334	cf::db_sync;
1335	IO::AIO::flush;
1336
1337	# get rid of safe::, as good as possible	2720	warn "getting rid of safe::, as good as possible";
1338	Symbol::delete_package "safe::$_"	2721	Symbol::delete_package "safe::$_"
1339	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	2722	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1340		2723
1341	# remove register_script_function callbacks
1342	# TODO
1343
1344	# unload cf.pm "a bit"	2724	warn "unloading cf.pm \"a bit\"";
1345	delete $INC{"cf.pm"};	2725	delete $INC{"cf.pm"};
		2726	delete $INC{"cf/pod.pm"};
1346		2727
1347	# don't, removes xs symbols, too,	2728	# don't, removes xs symbols, too,
1348	# and global variables created in xs	2729	# and global variables created in xs
1349	#Symbol::delete_package __PACKAGE__;	2730	#Symbol::delete_package __PACKAGE__;
1350		2731
1351	# reload cf.pm	2732	warn "unload completed, starting to reload now";
		2733
1352	warn "reloading cf.pm";	2734	warn "reloading cf.pm";
1353	require cf;	2735	require cf;
1354	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2736	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1355		2737
1356	# load config and database again	2738	warn "loading config and database again";
1357	cf::cfg_load;	2739	cf::cfg_load;
1358	cf::db_load;
1359		2740
1360	# load extensions
1361	warn "load extensions";	2741	warn "loading extensions";
1362	cf::load_extensions;	2742	cf::load_extensions;
1363		2743
1364	# reattach attachments to objects	2744	warn "reattaching attachments to objects/players";
1365	warn "reattach";	2745	_global_reattach; # objects, sockets
1366	_global_reattach;	2746	warn "reattaching attachments to maps";
1367	};	2747	reattach $_ for values %MAP;
		2748	warn "reattaching attachments to players";
		2749	reattach $_ for values %PLAYER;
1368		2750
1369	if ($@) {	2751	warn "leaving sync_job";
		2752
		2753	1
		2754	} or do {
1370	warn $@;	2755	warn $@;
1371	warn "error while reloading, exiting.";	2756	warn "error while reloading, exiting.";
1372	exit 1;	2757	exit 1;
1373	}	2758	};
1374		2759
1375	warn "reloaded successfully";	2760	warn "reloaded";
1376	};	2761	};
1377		2762
1378	sub perl_reload() {	2763	our $RELOAD_WATCHER; # used only during reload
1379	_perl_reload;
1380	}
1381		2764
1382	register "<global>", __PACKAGE__;	2765	sub reload_perl() {
		2766	# doing reload synchronously and two reloads happen back-to-back,
		2767	# coro crashes during coro_state_free->destroy here.
1383		2768
		2769	$RELOAD_WATCHER ||= Event->timer (
		2770	reentrant => 0,
		2771	after => 0,
		2772	data => WF_AUTOCANCEL,
		2773	cb => sub {
		2774	do_reload_perl;
		2775	undef $RELOAD_WATCHER;
		2776	},
		2777	);
		2778	}
		2779
1384	register_command "perl-reload" => sub {	2780	register_command "reload" => sub {
1385	my ($who, $arg) = @_;	2781	my ($who, $arg) = @_;
1386		2782
1387	if ($who->flag (FLAG_WIZ)) {	2783	if ($who->flag (FLAG_WIZ)) {
1388	$who->message ("reloading...");	2784	$who->message ("reloading server.");
1389	_perl_reload;	2785	async { reload_perl };
1390	}	2786	}
1391	};	2787	};
1392		2788
1393	unshift @INC, $LIBDIR;	2789	unshift @INC, $LIBDIR;
		2790
		2791	my $bug_warning = 0;
		2792
		2793	our @WAIT_FOR_TICK;
		2794	our @WAIT_FOR_TICK_BEGIN;
		2795
		2796	sub wait_for_tick {
		2797	return unless $TICK_WATCHER->is_active;
		2798	return if $Coro::current == $Coro::main;
		2799
		2800	my $signal = new Coro::Signal;
		2801	push @WAIT_FOR_TICK, $signal;
		2802	$signal->wait;
		2803	}
		2804
		2805	sub wait_for_tick_begin {
		2806	return unless $TICK_WATCHER->is_active;
		2807	return if $Coro::current == $Coro::main;
		2808
		2809	my $signal = new Coro::Signal;
		2810	push @WAIT_FOR_TICK_BEGIN, $signal;
		2811	$signal->wait;
		2812	}
1394		2813
1395	$TICK_WATCHER = Event->timer (	2814	$TICK_WATCHER = Event->timer (
1396	reentrant => 0,	2815	reentrant => 0,
		2816	parked => 1,
1397	prio => 0,	2817	prio => 0,
1398	at => $NEXT_TICK || $TICK,	2818	at => $NEXT_TICK || $TICK,
1399	data => WF_AUTOCANCEL,	2819	data => WF_AUTOCANCEL,
1400	cb => sub {	2820	cb => sub {
1401	unless ($FREEZE) {	2821	if ($Coro::current != $Coro::main) {
		2822	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2823	unless ++$bug_warning > 10;
		2824	return;
		2825	}
		2826
		2827	$NOW = Event::time;
		2828
1402	cf::server_tick; # one server iteration	2829	cf::server_tick; # one server iteration
		2830
1403	$RUNTIME += $TICK;	2831	$RUNTIME += $TICK;
1404	}
1405
1406	$NEXT_TICK += $TICK;	2832	$NEXT_TICK += $TICK;
		2833
		2834	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2835	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2836	Coro::async_pool {
		2837	write_runtime
		2838	or warn "ERROR: unable to write runtime file: $!";
		2839	};
		2840	}
		2841
		2842	# my $AFTER = Event::time;
		2843	# warn $AFTER - $NOW;#d#
1407		2844
1408	# if we are delayed by four ticks or more, skip them all	2845	# if we are delayed by four ticks or more, skip them all
1409	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2846	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1410		2847
1411	$TICK_WATCHER->at ($NEXT_TICK);	2848	$TICK_WATCHER->at ($NEXT_TICK);
1412	$TICK_WATCHER->start;	2849	$TICK_WATCHER->start;
		2850
		2851	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2852	$sig->send;
		2853	}
		2854	while (my $sig = shift @WAIT_FOR_TICK) {
		2855	$sig->send;
		2856	}
		2857
		2858	_post_tick;
1413	},	2859	},
1414	);	2860	);
1415		2861
		2862	{
		2863	BDB::max_poll_time $TICK * 0.1;
		2864	$BDB_POLL_WATCHER = Event->io (
		2865	reentrant => 0,
		2866	fd => BDB::poll_fileno,
		2867	poll => 'r',
		2868	prio => 0,
		2869	data => WF_AUTOCANCEL,
		2870	cb => \&BDB::poll_cb,
		2871	);
		2872	BDB::min_parallel 8;
		2873
		2874	BDB::set_sync_prepare {
		2875	my $status;
		2876	my $current = $Coro::current;
		2877	(
		2878	sub {
		2879	$status = $!;
		2880	$current->ready; undef $current;
		2881	},
		2882	sub {
		2883	Coro::schedule while defined $current;
		2884	$! = $status;
		2885	},
		2886	)
		2887	};
		2888
		2889	unless ($DB_ENV) {
		2890	$DB_ENV = BDB::db_env_create;
		2891
		2892	cf::sync_job {
		2893	eval {
		2894	BDB::db_env_open
		2895	$DB_ENV,
		2896	$BDBDIR,
		2897	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2898	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2899	0666;
		2900
		2901	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2902
		2903	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2904	$DB_ENV->set_lk_detect;
		2905	};
		2906
		2907	cf::cleanup "db_env_open(db): $@" if $@;
		2908	};
		2909	}
		2910	}
		2911
		2912	{
		2913	IO::AIO::min_parallel 8;
		2914
		2915	undef $Coro::AIO::WATCHER;
1416	IO::AIO::max_poll_time $TICK * 0.2;	2916	IO::AIO::max_poll_time $TICK * 0.1;
1417		2917	$AIO_POLL_WATCHER = Event->io (
1418	Event->io (fd => IO::AIO::poll_fileno,	2918	reentrant => 0,
1419	poll => 'r',
1420	prio => 5,
1421	data => WF_AUTOCANCEL,	2919	data => WF_AUTOCANCEL,
		2920	fd => IO::AIO::poll_fileno,
		2921	poll => 'r',
		2922	prio => 6,
1422	cb => \&IO::AIO::poll_cb);	2923	cb => \&IO::AIO::poll_cb,
		2924	);
		2925	}
1423		2926
1424	# we must not ever block the main coroutine	2927	# load additional modules
1425	$Coro::idle = sub {	2928	use cf::pod;
1426	#Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	2929
1427	warn "FATAL: Coro::idle was called, major BUG\n";	2930	END { cf::emergency_save }
1428	(Coro::unblock_sub {
1429	Event::one_event;
1430	})->();
1431	};
1432		2931
1433	1	2932	1
1434		2933

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