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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.109 by root, Sun Dec 31 22:23:12 2006 UTC vs.
Revision 1.315 by root, Mon Jul 23 17:53:55 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 JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
20	use Digest::MD5;	28	use Digest::MD5;
21	use Fcntl;	29	use Fcntl;
22	use IO::AIO 2.31 ();
23	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
24	use Time::HiRes;	32	use Time::HiRes;
		33	use Compress::LZF;
		34	use Digest::MD5 ();
25		35
		36	# configure various modules to our taste
		37	#
		38	$Storable::canonical = 1; # reduce rsync transfers
		39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		40	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		41
26	use Event; $Event::Eval = 1; # no idea why this is required, but it is	42	$Event::Eval = 1; # no idea why this is required, but it is
27		43
28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
29	$YAML::Syck::ImplicitUnicode = 1;	45	$YAML::Syck::ImplicitUnicode = 1;
30		46
31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
32		48
33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
34		50
35	our %COMMAND = ();	51	our %COMMAND = ();
36	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
37	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
38		59
		60	our $RELOAD; # number of reloads so far
39	our @EVENT;	61	our @EVENT;
40	our $LIBDIR = datadir . "/ext";
41		62
42	our $TICK = MAX_TIME * 1e-6;	63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
		74
		75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
43	our $TICK_WATCHER;	76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
44	our $NEXT_TICK;	79	our $NEXT_TICK;
45	our $NOW;	80	our $NOW;
		81	our $USE_FSYNC = 1; # use fsync to write maps - default off
		82
		83	our $BDB_POLL_WATCHER;
		84	our $DB_ENV;
46		85
47	our %CFG;	86	our %CFG;
48		87
49	our $UPTIME; $UPTIME ||= time;	88	our $UPTIME; $UPTIME ||= time;
50	our $RUNTIME;	89	our $RUNTIME;
51		90
		91	our %PLAYER; # all users
52	our %MAP; # all maps	92	our %MAP; # all maps
53	our $LINK_MAP; # the special {link} map	93	our $LINK_MAP; # the special {link} map, which is always available
54	our $FREEZE;	94
55	our $RANDOM_MAPS = cf::localdir . "/random";	95	# used to convert map paths into valid unix filenames by replacing / by ∕
56	our %EXT_CORO;	96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
57		101
58	binmode STDOUT;	102	binmode STDOUT;
59	binmode STDERR;	103	binmode STDERR;
60		104
61	# read virtual server time, if available	105	# read virtual server time, if available
62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
63	open my $fh, "<", cf::localdir . "/runtime"	107	open my $fh, "<", "$LOCALDIR/runtime"
64	or die "unable to read runtime file: $!";	108	or die "unable to read runtime file: $!";
65	$RUNTIME = <$fh> + 0.;	109	$RUNTIME = <$fh> + 0.;
66	}	110	}
67		111
68	mkdir cf::localdir;	112	mkdir $_
69	mkdir cf::localdir . "/" . cf::playerdir;	113	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
70	mkdir cf::localdir . "/" . cf::tmpdir;
71	mkdir cf::localdir . "/" . cf::uniquedir;
72	mkdir $RANDOM_MAPS;
73		114
74	# a special map that is always available	115	our $EMERGENCY_POSITION;
75	our $LINK_MAP;	116
		117	sub cf::map::normalise;
76		118
77	#############################################################################	119	#############################################################################
78		120
79	=head2 GLOBAL VARIABLES	121	=head2 GLOBAL VARIABLES
80		122
…		…
87	=item $cf::RUNTIME	129	=item $cf::RUNTIME
88		130
89	The time this server has run, starts at 0 and is increased by $cf::TICK on	131	The time this server has run, starts at 0 and is increased by $cf::TICK on
90	every server tick.	132	every server tick.
91		133
92	=item $cf::LIBDIR	134	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		135	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		136	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
93		137
94	The perl library directory, where extensions and cf-specific modules can	138	Various directories - "/etc", read-only install directory, perl-library
95	be found. It will be added to C<@INC> automatically.	139	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		140	unique-items directory, player file directory, random maps directory and
		141	database environment.
96		142
97	=item $cf::NOW	143	=item $cf::NOW
98		144
99	The time of the last (current) server tick.	145	The time of the last (current) server tick.
100		146
101	=item $cf::TICK	147	=item $cf::TICK
102		148
103	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
104		160
105	=item %cf::CFG	161	=item %cf::CFG
106		162
107	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
108	from wherever your confdir points to.	164	from wherever your confdir points to.
		165
		166	=item cf::wait_for_tick, cf::wait_for_tick_begin
		167
		168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		169	returns directly I<after> the tick processing (and consequently, can only wake one process
		170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
109		177
110	=back	178	=back
111		179
112	=cut	180	=cut
113		181
114	BEGIN {	182	BEGIN {
115	*CORE::GLOBAL::warn = sub {	183	*CORE::GLOBAL::warn = sub {
116	my $msg = join "", @_;	184	my $msg = join "", @_;
117	utf8::encode $msg;
118		185
119	$msg .= "\n"	186	$msg .= "\n"
120	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
121		188
		189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		190
		191	utf8::encode $msg;
122	LOG llevError, "cfperl: $msg";	192	LOG llevError, $msg;
123	};	193	};
124	}	194	}
125		195
126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
132		203
133	# we bless all objects into (empty) derived classes to force a method lookup	204	# we bless all objects into (empty) derived classes to force a method lookup
134	# within the Safe compartment.	205	# within the Safe compartment.
135	for my $pkg (qw(	206	for my $pkg (qw(
136	cf::global cf::attachable	207	cf::global cf::attachable
…		…
145		216
146	$Event::DIED = sub {	217	$Event::DIED = sub {
147	warn "error in event callback: @_";	218	warn "error in event callback: @_";
148	};	219	};
149		220
150	my %ext_pkg;	221	#############################################################################
151	my @exts;
152	my @hook;
153		222
154	=head2 UTILITY FUNCTIONS	223	=head2 UTILITY FUNCTIONS
155		224
156	=over 4	225	=over 4
157		226
158	=cut	227	=item dumpval $ref
159		228
160	use JSON::Syck (); # TODO# replace by JSON::PC once working	229	=cut
		230
		231	sub dumpval {
		232	eval {
		233	local $SIG{__DIE__};
		234	my $d;
		235	if (1) {
		236	$d = new Data::Dumper([$_[0]], ["*var"]);
		237	$d->Terse(1);
		238	$d->Indent(2);
		239	$d->Quotekeys(0);
		240	$d->Useqq(1);
		241	#$d->Bless(...);
		242	$d->Seen($_[1]) if @_ > 1;
		243	$d = $d->Dump();
		244	}
		245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		246	$d
		247	} || "[unable to dump $_[0]: '$@']";
		248	}
161		249
162	=item $ref = cf::from_json $json	250	=item $ref = cf::from_json $json
163		251
164	Converts a JSON string into the corresponding perl data structure.	252	Converts a JSON string into the corresponding perl data structure.
165		253
166	=cut
167
168	sub from_json($) {
169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
170	JSON::Syck::Load $_[0]
171	}
172
173	=item $json = cf::to_json $ref	254	=item $json = cf::to_json $ref
174		255
175	Converts a perl data structure into its JSON representation.	256	Converts a perl data structure into its JSON representation.
176		257
177	=cut	258	=cut
178		259
179	sub to_json($) {	260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	261
181	JSON::Syck::Dump $_[0]	262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
		264
		265	=item cf::lock_wait $string
		266
		267	Wait until the given lock is available. See cf::lock_acquire.
		268
		269	=item my $lock = cf::lock_acquire $string
		270
		271	Wait until the given lock is available and then acquires it and returns
		272	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		273	for example when the coroutine gets canceled), the lock is automatically
		274	returned.
		275
		276	Lock names should begin with a unique identifier (for example, cf::map::find
		277	uses map_find and cf::map::load uses map_load).
		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
		283	=cut
		284
		285	our %LOCK;
		286
		287	sub lock_wait($) {
		288	my ($key) = @_;
		289
		290	# wait for lock, if any
		291	while ($LOCK{$key}) {
		292	push @{ $LOCK{$key} }, $Coro::current;
		293	Coro::schedule;
		294	}
182	}	295	}
		296
		297	sub lock_acquire($) {
		298	my ($key) = @_;
		299
		300	# wait, to be sure we are not locked
		301	lock_wait $key;
		302
		303	$LOCK{$key} = [];
		304
		305	Coro::guard {
		306	# wake up all waiters, to be on the safe side
		307	$_->ready for @{ delete $LOCK{$key} };
		308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
		315	}
		316
		317	sub freeze_mainloop {
		318	return unless $TICK_WATCHER->is_active;
		319
		320	my $guard = Coro::guard {
		321	$TICK_WATCHER->start;
		322	};
		323	$TICK_WATCHER->stop;
		324	$guard
		325	}
		326
		327	=item cf::get_slot $time[, $priority[, $name]]
		328
		329	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		330	This call blocks and returns only when you have at least C<$time> seconds
		331	of cpu time till the next tick. The slot is only valid till the next cede.
		332
		333	The optional C<$name> can be used to identify the job to run. It might be
		334	used for statistical purposes and should identify the same time-class.
		335
		336	Useful for short background jobs.
		337
		338	=cut
		339
		340	our @SLOT_QUEUE;
		341	our $SLOT_QUEUE;
		342
		343	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		344	$SLOT_QUEUE = Coro::async {
		345	my $signal = new Coro::Signal;
		346
		347	while () {
		348	next_job:
		349	my $avail = cf::till_tick;
		350	if ($avail > 0.01) {
		351	for (0 .. $#SLOT_QUEUE) {
		352	if ($SLOT_QUEUE[$_][0] < $avail) {
		353	my $job = splice @SLOT_QUEUE, $_, 1, ();
		354	$job->[2]->send;
		355	Coro::cede;
		356	goto next_job;
		357	}
		358	}
		359	}
		360
		361	if (@SLOT_QUEUE) {
		362	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		363	push @cf::WAIT_FOR_TICK, $signal;
		364	$signal->wait;
		365	} else {
		366	Coro::schedule;
		367	}
		368	}
		369	};
		370
		371	sub get_slot($;$$) {
		372	my ($time, $pri, $name) = @_;
		373
		374	$time = $TICK * .6 if $time > $TICK * .6;
		375	my $sig = new Coro::Signal;
		376
		377	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		378	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		379	$SLOT_QUEUE->ready;
		380	$sig->wait;
		381	}
		382
		383	=item cf::async { BLOCK }
		384
		385	Currently the same as Coro::async_pool, meaning you cannot use
		386	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		387	thing you are allowed to do is call C<prio> on it.
		388
		389	=cut
		390
		391	BEGIN { *async = \&Coro::async_pool }
183		392
184	=item cf::sync_job { BLOCK }	393	=item cf::sync_job { BLOCK }
185		394
186	The design of crossfire+ requires that the main coro ($Coro::main) is	395	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
187	always able to handle events or runnable, as crossfire+ is only partly	396	is always able to handle events or runnable, as Crossfire TRT is only
188	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	397	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		398	acceptable.
189		399
190	If it must be done, put the blocking parts into C<sync_job>. This will run	400	If it must be done, put the blocking parts into C<sync_job>. This will run
191	the given BLOCK in another coroutine while waiting for the result. The	401	the given BLOCK in another coroutine while waiting for the result. The
192	server will be frozen during this time, so the block should either finish	402	server will be frozen during this time, so the block should either finish
193	fast or be very important.	403	fast or be very important.
…		…
195	=cut	405	=cut
196		406
197	sub sync_job(&) {	407	sub sync_job(&) {
198	my ($job) = @_;	408	my ($job) = @_;
199		409
200	my $busy = 1;
201	my @res;
202
203	# TODO: use suspend/resume instead
204	local $FREEZE = 1;
205
206	my $coro = Coro::async {
207	@res = eval { $job->() };
208	warn $@ if $@;
209	undef $busy;
210	};
211
212	if ($Coro::current == $Coro::main) {	410	if ($Coro::current == $Coro::main) {
		411	my $time = Event::time;
		412
		413	# this is the main coro, too bad, we have to block
		414	# till the operation succeeds, freezing the server :/
		415
		416	# TODO: use suspend/resume instead
		417	# (but this is cancel-safe)
		418	my $freeze_guard = freeze_mainloop;
		419
		420	my $busy = 1;
		421	my @res;
		422
		423	(async {
		424	@res = eval { $job->() };
		425	warn $@ if $@;
		426	undef $busy;
213	$coro->prio (Coro::PRIO_MAX);	427	})->prio (Coro::PRIO_MAX);
		428
214	while ($busy) {	429	while ($busy) {
215	Coro::cede_notself;	430	Coro::cede or Event::one_event;
216	Event::one_event unless Coro::nready;
217	}	431	}
		432
		433	$time = Event::time - $time;
		434
		435	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		436	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		437
		438	$tick_start += $time; # do not account sync jobs to server load
		439
		440	wantarray ? @res : $res[0]
218	} else {	441	} else {
219	$coro->join;	442	# we are in another coroutine, how wonderful, everything just works
		443
		444	$job->()
220	}	445	}
221
222	wantarray ? @res : $res[0]
223	}	446	}
224		447
225	=item $coro = cf::coro { BLOCK }	448	=item $coro = cf::async_ext { BLOCK }
226		449
227	Creates and returns a new coro. This coro is automcatially being canceled	450	Like async, but this coro is automatically being canceled when the
228	when the extension calling this is being unloaded.	451	extension calling this is being unloaded.
229		452
230	=cut	453	=cut
231		454
232	sub coro(&) {	455	sub async_ext(&) {
233	my $cb = shift;	456	my $cb = shift;
234		457
235	my $coro; $coro = async {	458	my $coro = &Coro::async ($cb);
236	eval {
237	$cb->();
238	};
239	warn $@ if $@;
240	};
241		459
242	$coro->on_destroy (sub {	460	$coro->on_destroy (sub {
243	delete $EXT_CORO{$coro+0};	461	delete $EXT_CORO{$coro+0};
244	});	462	});
245	$EXT_CORO{$coro+0} = $coro;	463	$EXT_CORO{$coro+0} = $coro;
246		464
247	$coro	465	$coro
248	}	466	}
249		467
250	sub write_runtime {	468	=item fork_call { }, $args
251	my $runtime = cf::localdir . "/runtime";
252		469
253	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	470	Executes the given code block with the given arguments in a seperate
254	or return;	471	process, returning the results. Everything must be serialisable with
		472	Coro::Storable. May, of course, block. Note that the executed sub may
		473	never block itself or use any form of Event handling.
255		474
256	my $value = $cf::RUNTIME;	475	=cut
257	(aio_write $fh, 0, (length $value), $value, 0) <= 0
258	and return;
259		476
260	aio_fsync $fh	477	sub _store_scalar {
261	and return;	478	open my $fh, ">", \my $buf
262		479	or die "fork_call: cannot open fh-to-buf in child : $!";
		480	Storable::store_fd $_[0], $fh;
263	close $fh	481	close $fh;
264	or return;
265		482
266	aio_rename "$runtime~", $runtime	483	$buf
267	and return;	484	}
268		485
		486	sub fork_call(&@) {
		487	my ($cb, @args) = @_;
		488
		489	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		490	# or die "socketpair: $!";
		491	pipe my $fh1, my $fh2
		492	or die "pipe: $!";
		493
		494	if (my $pid = fork) {
		495	close $fh2;
		496
		497	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		498	warn "pst<$res>" unless $res =~ /^pst/;
		499	$res = Coro::Storable::thaw $res;
		500
		501	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		502
		503	Carp::confess $$res unless "ARRAY" eq ref $res;
		504
		505	return wantarray ? @$res : $res->[-1];
		506	} else {
		507	reset_signals;
		508	local $SIG{__WARN__};
		509	local $SIG{__DIE__};
		510	# just in case, this hack effectively disables event
		511	# in the child. cleaner and slower would be canceling all watchers,
		512	# but this works for the time being.
		513	local $Coro::idle;
		514	$Coro::current->prio (Coro::PRIO_MAX);
		515
		516	eval {
		517	close $fh1;
		518
		519	my @res = eval { $cb->(@args) };
		520
		521	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		522	close $fh2;
		523	};
		524
		525	warn $@ if $@;
		526	_exit 0;
269	1	527	}
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=cut
		540
		541	our $DB;
		542
		543	sub db_init {
		544	unless ($DB) {
		545	$DB = BDB::db_create $DB_ENV;
		546
		547	cf::sync_job {
		548	eval {
		549	$DB->set_flags (BDB::CHKSUM);
		550
		551	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		552	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		553	cf::cleanup "db_open(db): $!" if $!;
		554	};
		555	cf::cleanup "db_open(db): $@" if $@;
		556	};
		557	}
		558	}
		559
		560	sub db_get($$) {
		561	my $key = "$_[0]/$_[1]";
		562
		563	cf::sync_job {
		564	BDB::db_get $DB, undef, $key, my $data;
		565
		566	$! ? ()
		567	: $data
		568	}
		569	}
		570
		571	sub db_put($$$) {
		572	BDB::dbreq_pri 4;
		573	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		574	}
		575
		576	=item cf::cache $id => [$paths...], $processversion => $process
		577
		578	Generic caching function that returns the value of the resource $id,
		579	caching and regenerating as required.
		580
		581	This function can block.
		582
		583	=cut
		584
		585	sub cache {
		586	my ($id, $src, $processversion, $process) = @_;
		587
		588	my $meta =
		589	join "\x00",
		590	$processversion,
		591	map {
		592	aio_stat $_
		593	and Carp::croak "$_: $!";
		594
		595	($_, (stat _)[7,9])
		596	} @$src;
		597
		598	my $dbmeta = db_get cache => "$id/meta";
		599	if ($dbmeta ne $meta) {
		600	# changed, we may need to process
		601
		602	my @data;
		603	my $md5;
		604
		605	for (0 .. $#$src) {
		606	0 <= aio_load $src->[$_], $data[$_]
		607	or Carp::croak "$src->[$_]: $!";
		608	}
		609
		610	# if processing is expensive, check
		611	# checksum first
		612	if (1) {
		613	$md5 =
		614	join "\x00",
		615	$processversion,
		616	map {
		617	Coro::cede;
		618	($src->[$_], Digest::MD5::md5_hex $data[$_])
		619	} 0.. $#$src;
		620
		621
		622	my $dbmd5 = db_get cache => "$id/md5";
		623	if ($dbmd5 eq $md5) {
		624	db_put cache => "$id/meta", $meta;
		625
		626	return db_get cache => "$id/data";
		627	}
		628	}
		629
		630	my $t1 = Time::HiRes::time;
		631	my $data = $process->(\@data);
		632	my $t2 = Time::HiRes::time;
		633
		634	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		635
		636	db_put cache => "$id/data", $data;
		637	db_put cache => "$id/md5" , $md5;
		638	db_put cache => "$id/meta", $meta;
		639
		640	return $data;
		641	}
		642
		643	db_get cache => "$id/data"
		644	}
		645
		646	=item cf::datalog type => key => value, ...
		647
		648	Log a datalog packet of the given type with the given key-value pairs.
		649
		650	=cut
		651
		652	sub datalog($@) {
		653	my ($type, %kv) = @_;
		654	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
270	}	655	}
271		656
272	=back	657	=back
273		658
274	=cut	659	=cut
275
276	#############################################################################
277
278	package cf::path;
279
280	sub new {
281	my ($class, $path, $base) = @_;
282
283	my $self = bless { }, $class;
284
285	if ($path =~ s{^\?random/}{}) {
286	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
287	$self->{random} = cf::from_json $data;
288	} else {
289	if ($path =~ s{^~([^/]+)?}{}) {
290	$self->{user_rel} = 1;
291
292	if (defined $1) {
293	$self->{user} = $1;
294	} elsif ($base =~ m{^~([^/]+)/}) {
295	$self->{user} = $1;
296	} else {
297	warn "cannot resolve user-relative path without user <$path,$base>\n";
298	}
299	} elsif ($path =~ /^\//) {
300	# already absolute
301	} else {
302	$base =~ s{[^/]+/?$}{};
303	return $class->new ("$base/$path");
304	}
305
306	for ($path) {
307	redo if s{/\.?/}{/};
308	redo if s{/[^/]+/\.\./}{/};
309	}
310	}
311
312	$self->{path} = $path;
313
314	$self
315	}
316
317	# the name / primary key / in-game path
318	sub as_string {
319	my ($self) = @_;
320
321	$self->{user_rel} ? "~$self->{user}$self->{path}"
322	: $self->{random} ? "?random/$self->{path}"
323	: $self->{path}
324	}
325
326	# the displayed name, this is a one way mapping
327	sub visible_name {
328	my ($self) = @_;
329
330	# if (my $rmp = $self->{random}) {
331	# # todo: be more intelligent about this
332	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
333	# } else {
334	$self->as_string
335	# }
336	}
337
338	# escape the /'s in the path
339	sub _escaped_path {
340	# ∕ is U+2215
341	(my $path = $_[0]{path}) =~ s/\//∕/g;
342	$path
343	}
344
345	# the original (read-only) location
346	sub load_path {
347	my ($self) = @_;
348
349	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
350	}
351
352	# the temporary/swap location
353	sub save_path {
354	my ($self) = @_;
355
356	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
357	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
358	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
359	}
360
361	# the unique path, might be eq to save_path
362	sub uniq_path {
363	my ($self) = @_;
364
365	$self->{user_rel} || $self->{random}
366	? undef
367	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
368	}
369
370	# return random map parameters, or undef
371	sub random_map_params {
372	my ($self) = @_;
373
374	$self->{random}
375	}
376
377	# this is somewhat ugly, but style maps do need special treatment
378	sub is_style_map {
379	$_[0]{path} =~ m{^/styles/}
380	}
381
382	package cf;
383		660
384	#############################################################################	661	#############################################################################
385		662
386	=head2 ATTACHABLE OBJECTS	663	=head2 ATTACHABLE OBJECTS
387		664
…		…
389	attach callbacks/event handlers (a collection of which is called an "attachment")	666	attach callbacks/event handlers (a collection of which is called an "attachment")
390	to it. All such attachable objects support the following methods.	667	to it. All such attachable objects support the following methods.
391		668
392	In the following description, CLASS can be any of C<global>, C<object>	669	In the following description, CLASS can be any of C<global>, C<object>
393	C<player>, C<client> or C<map> (i.e. the attachable objects in	670	C<player>, C<client> or C<map> (i.e. the attachable objects in
394	crossfire+).	671	Crossfire TRT).
395		672
396	=over 4	673	=over 4
397		674
398	=item $attachable->attach ($attachment, key => $value...)	675	=item $attachable->attach ($attachment, key => $value...)
399		676
…		…
513	our @CB_TYPE = (); # registry for type (cf-object class) based events	790	our @CB_TYPE = (); # registry for type (cf-object class) based events
514	our @CB_MAP = ();	791	our @CB_MAP = ();
515		792
516	my %attachment;	793	my %attachment;
517		794
		795	sub cf::attachable::thawer_merge {
		796	# simply override everything except _meta
		797	local $_[0]{_meta};
		798	%{$_[0]} = %{$_[1]};
		799	}
		800
518	sub _attach_cb($$$$) {	801	sub _attach_cb($$$$) {
519	my ($registry, $event, $prio, $cb) = @_;	802	my ($registry, $event, $prio, $cb) = @_;
520		803
521	use sort 'stable';	804	use sort 'stable';
522		805
…		…
556	$registry = $CB_TYPE[$object_type] ||= [];	839	$registry = $CB_TYPE[$object_type] ||= [];
557		840
558	} elsif ($type eq "subtype") {	841	} elsif ($type eq "subtype") {
559	defined $object_type or Carp::croak "subtype specified without type";	842	defined $object_type or Carp::croak "subtype specified without type";
560	my $object_subtype = shift @arg;	843	my $object_subtype = shift @arg;
561	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	844	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
562		845
563	} elsif ($type eq "package") {	846	} elsif ($type eq "package") {
564	my $pkg = shift @arg;	847	my $pkg = shift @arg;
565		848
566	while (my ($name, $id) = each %cb_id) {	849	while (my ($name, $id) = each %cb_id) {
…		…
595	_attach $registry, $klass, @attach;	878	_attach $registry, $klass, @attach;
596	}	879	}
597		880
598	$obj->{$name} = \%arg;	881	$obj->{$name} = \%arg;
599	} else {	882	} else {
600	warn "object uses attachment '$name' that is not available, postponing.\n";	883	warn "object uses attachment '$name' which is not available, postponing.\n";
601	}	884	}
602		885
603	$obj->{_attachment}{$name} = undef;	886	$obj->{_attachment}{$name} = undef;
604	}	887	}
605		888
…		…
607	if (ref $_[0]) {	890	if (ref $_[0]) {
608	_object_attach @_;	891	_object_attach @_;
609	} else {	892	} else {
610	_attach shift->_attach_registry, @_;	893	_attach shift->_attach_registry, @_;
611	}	894	}
		895	_recalc_want;
612	};	896	};
613		897
614	# all those should be optimised	898	# all those should be optimised
615	sub cf::attachable::detach {	899	sub cf::attachable::detach {
616	my ($obj, $name) = @_;	900	my ($obj, $name) = @_;
…		…
619	delete $obj->{_attachment}{$name};	903	delete $obj->{_attachment}{$name};
620	reattach ($obj);	904	reattach ($obj);
621	} else {	905	} else {
622	Carp::croak "cannot, currently, detach class attachments";	906	Carp::croak "cannot, currently, detach class attachments";
623	}	907	}
		908	_recalc_want;
624	};	909	};
625		910
626	sub cf::attachable::attached {	911	sub cf::attachable::attached {
627	my ($obj, $name) = @_;	912	my ($obj, $name) = @_;
628		913
…		…
643	";	928	";
644	die if $@;	929	die if $@;
645	}	930	}
646		931
647	our $override;	932	our $override;
648	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	933	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
649		934
650	sub override {	935	sub override {
651	$override = 1;	936	$override = 1;
652	@invoke_results = ();	937	@INVOKE_RESULTS = (@_);
653	}	938	}
654		939
655	sub do_invoke {	940	sub do_invoke {
656	my $event = shift;	941	my $event = shift;
657	my $callbacks = shift;	942	my $callbacks = shift;
658		943
659	@invoke_results = ();	944	@INVOKE_RESULTS = ();
660		945
661	local $override;	946	local $override;
662		947
663	for (@$callbacks) {	948	for (@$callbacks) {
664	eval { &{$_->[1]} };	949	eval { &{$_->[1]} };
…		…
681		966
682	Generate an object-specific event with the given arguments.	967	Generate an object-specific event with the given arguments.
683		968
684	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	969	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
685	removed in future versions), and there is no public API to access override	970	removed in future versions), and there is no public API to access override
686	results (if you must, access C<@cf::invoke_results> directly).	971	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
687		972
688	=back	973	=back
689		974
690	=cut	975	=cut
691		976
692	#############################################################################	977	#############################################################################
693	# object support	978	# object support
		979	#
		980
		981	sub _can_merge {
		982	my ($ob1, $ob2) = @_;
		983
		984	local $Storable::canonical = 1;
		985	my $fob1 = Storable::freeze $ob1;
		986	my $fob2 = Storable::freeze $ob2;
		987
		988	$fob1 eq $fob2
		989	}
694		990
695	sub reattach {	991	sub reattach {
696	# basically do the same as instantiate, without calling instantiate	992	# basically do the same as instantiate, without calling instantiate
697	my ($obj) = @_;	993	my ($obj) = @_;
		994
		995	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
698		996
699	my $registry = $obj->registry;	997	my $registry = $obj->registry;
700		998
701	@$registry = ();	999	@$registry = ();
702		1000
…		…
749	$filename, length $$rdata, scalar @$objs;	1047	$filename, length $$rdata, scalar @$objs;
750		1048
751	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	1049	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
752	chmod SAVE_MODE, $fh;	1050	chmod SAVE_MODE, $fh;
753	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	1051	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
754	aio_fsync $fh;	1052	aio_fsync $fh if $cf::USE_FSYNC;
755	close $fh;	1053	close $fh;
756		1054
757	if (@$objs) {	1055	if (@$objs) {
758	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	1056	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
759	chmod SAVE_MODE, $fh;	1057	chmod SAVE_MODE, $fh;
760	my $data = Storable::nfreeze { version => 1, objs => $objs };	1058	my $data = Storable::nfreeze { version => 1, objs => $objs };
761	aio_write $fh, 0, (length $data), $data, 0;	1059	aio_write $fh, 0, (length $data), $data, 0;
762	aio_fsync $fh;	1060	aio_fsync $fh if $cf::USE_FSYNC;
763	close $fh;	1061	close $fh;
764	aio_rename "$filename.pst~", "$filename.pst";	1062	aio_rename "$filename.pst~", "$filename.pst";
765	}	1063	}
766	} else {	1064	} else {
767	aio_unlink "$filename.pst";	1065	aio_unlink "$filename.pst";
…		…
795	or return;	1093	or return;
796		1094
797	unless (aio_stat "$filename.pst") {	1095	unless (aio_stat "$filename.pst") {
798	(aio_load "$filename.pst", $av) >= 0	1096	(aio_load "$filename.pst", $av) >= 0
799	or return;	1097	or return;
800	$av = eval { (Storable::thaw <$av>)->{objs} };	1098	$av = eval { (Storable::thaw $av)->{objs} };
801	}	1099	}
802		1100
		1101	warn sprintf "loading %s (%d)\n",
		1102	$filename, length $data, scalar @{$av || []};
803	return ($data, $av);	1103	return ($data, $av);
804	}	1104	}
		1105
		1106	=head2 COMMAND CALLBACKS
		1107
		1108	=over 4
		1109
		1110	=cut
805		1111
806	#############################################################################	1112	#############################################################################
807	# command handling &c	1113	# command handling &c
808		1114
809	=item cf::register_command $name => \&callback($ob,$args);	1115	=item cf::register_command $name => \&callback($ob,$args);
…		…
822	push @{ $COMMAND{$name} }, [$caller, $cb];	1128	push @{ $COMMAND{$name} }, [$caller, $cb];
823	}	1129	}
824		1130
825	=item cf::register_extcmd $name => \&callback($pl,$packet);	1131	=item cf::register_extcmd $name => \&callback($pl,$packet);
826		1132
827	Register a callbackf ro execution when the client sends an extcmd packet.	1133	Register a callback for execution when the client sends an (synchronous)
		1134	extcmd packet. Ext commands will be processed in the order they are
		1135	received by the server, like other user commands. The first argument is
		1136	the logged-in player. Ext commands can only be processed after a player
		1137	has logged in successfully.
828		1138
829	If the callback returns something, it is sent back as if reply was being	1139	If the callback returns something, it is sent back as if reply was being
830	called.	1140	called.
831		1141
		1142	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1143
		1144	Register a callback for execution when the client sends an (asynchronous)
		1145	exticmd packet. Exti commands are processed by the server as soon as they
		1146	are received, i.e. out of order w.r.t. other commands. The first argument
		1147	is a client socket. Exti commands can be received anytime, even before
		1148	log-in.
		1149
		1150	If the callback returns something, it is sent back as if reply was being
		1151	called.
		1152
832	=cut	1153	=cut
833		1154
834	sub register_extcmd {	1155	sub register_extcmd {
835	my ($name, $cb) = @_;	1156	my ($name, $cb) = @_;
836		1157
837	my $caller = caller;
838	#warn "registering extcmd '$name' to '$caller'";
839
840	$EXTCMD{$name} = [$cb, $caller];	1158	$EXTCMD{$name} = $cb;
		1159	}
		1160
		1161	sub register_exticmd {
		1162	my ($name, $cb) = @_;
		1163
		1164	$EXTICMD{$name} = $cb;
841	}	1165	}
842		1166
843	cf::player->attach (	1167	cf::player->attach (
844	on_command => sub {	1168	on_command => sub {
845	my ($pl, $name, $params) = @_;	1169	my ($pl, $name, $params) = @_;
…		…
854	cf::override;	1178	cf::override;
855	},	1179	},
856	on_extcmd => sub {	1180	on_extcmd => sub {
857	my ($pl, $buf) = @_;	1181	my ($pl, $buf) = @_;
858		1182
859	my $msg = eval { from_json $buf };	1183	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
860		1184
861	if (ref $msg) {	1185	if (ref $msg) {
862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1186	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
863	if (my %reply = $cb->[0]->($pl, $msg)) {	1187	if (my %reply = $cb->($pl, $msg)) {
864	$pl->ext_reply ($msg->{msgid}, %reply);	1188	$pl->ext_reply ($msg->{msgid}, %reply);
865	}	1189	}
866	}	1190	}
867	} else {	1191	} else {
868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1192	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
870		1194
871	cf::override;	1195	cf::override;
872	},	1196	},
873	);	1197	);
874		1198
		1199	sub load_extensions {
		1200	cf::sync_job {
		1201	my %todo;
		1202
		1203	for my $path (<$LIBDIR/*.ext>) {
		1204	next unless -r $path;
		1205
		1206	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1207	my $base = $1;
		1208	my $pkg = $1;
		1209	$pkg =~ s/[^[:word:]]/_/g;
		1210	$pkg = "ext::$pkg";
		1211
		1212	open my $fh, "<:utf8", $path
		1213	or die "$path: $!";
		1214
		1215	my $source = do { local $/; <$fh> };
		1216
		1217	my %ext = (
		1218	path => $path,
		1219	base => $base,
		1220	pkg => $pkg,
		1221	);
		1222
		1223	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1224	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1225
		1226	$ext{source} =
		1227	"package $pkg; use strict; use utf8;\n"
		1228	. "#line 1 \"$path\"\n{\n"
		1229	. $source
		1230	. "\n};\n1";
		1231
		1232	$todo{$base} = \%ext;
		1233	}
		1234
		1235	my %done;
		1236	while (%todo) {
		1237	my $progress;
		1238
		1239	while (my ($k, $v) = each %todo) {
		1240	for (split /,\s*/, $v->{meta}{depends}) {
		1241	goto skip
		1242	unless exists $done{$_};
		1243	}
		1244
		1245	warn "... loading '$k' into '$v->{pkg}'\n";
		1246
		1247	unless (eval $v->{source}) {
		1248	my $msg = $@ ? "$v->{path}: $@\n"
		1249	: "$v->{base}: extension inactive.\n";
		1250
		1251	if (exists $v->{meta}{mandatory}) {
		1252	warn $msg;
		1253	warn "mandatory extension failed to load, exiting.\n";
		1254	exit 1;
		1255	}
		1256
		1257	warn $msg;
		1258	}
		1259
		1260	$done{$k} = delete $todo{$k};
		1261	push @EXTS, $v->{pkg};
		1262	$progress = 1;
		1263	}
		1264
		1265	skip:
		1266	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1267	unless $progress;
		1268	}
		1269	};
		1270	}
		1271
		1272	#############################################################################
		1273
		1274	=back
		1275
		1276	=head2 CORE EXTENSIONS
		1277
		1278	Functions and methods that extend core crossfire objects.
		1279
		1280	=cut
		1281
		1282	package cf::player;
		1283
		1284	use Coro::AIO;
		1285
		1286	=head3 cf::player
		1287
		1288	=over 4
		1289
		1290	=item cf::player::find $login
		1291
		1292	Returns the given player object, loading it if necessary (might block).
		1293
		1294	=cut
		1295
		1296	sub playerdir($) {
		1297	"$PLAYERDIR/"
		1298	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1299	}
		1300
		1301	sub path($) {
		1302	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1303
		1304	(playerdir $login) . "/playerdata"
		1305	}
		1306
		1307	sub find_active($) {
		1308	$cf::PLAYER{$_[0]}
		1309	and $cf::PLAYER{$_[0]}->active
		1310	and $cf::PLAYER{$_[0]}
		1311	}
		1312
		1313	sub exists($) {
		1314	my ($login) = @_;
		1315
		1316	$cf::PLAYER{$login}
		1317	or cf::sync_job { !aio_stat path $login }
		1318	}
		1319
		1320	sub find($) {
		1321	return $cf::PLAYER{$_[0]} || do {
		1322	my $login = $_[0];
		1323
		1324	my $guard = cf::lock_acquire "user_find:$login";
		1325
		1326	$cf::PLAYER{$_[0]} || do {
		1327	# rename old playerfiles to new ones
		1328	#TODO: remove when no longer required
		1329	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1330	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1331	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1332	aio_unlink +(playerdir $login) . "/$login.pl";
		1333
		1334	my $pl = load_pl path $login
		1335	or return;
		1336	$cf::PLAYER{$login} = $pl
		1337	}
		1338	}
		1339	}
		1340
		1341	sub save($) {
		1342	my ($pl) = @_;
		1343
		1344	return if $pl->{deny_save};
		1345
		1346	my $path = path $pl;
		1347	my $guard = cf::lock_acquire "user_save:$path";
		1348
		1349	return if $pl->{deny_save};
		1350
		1351	aio_mkdir playerdir $pl, 0770;
		1352	$pl->{last_save} = $cf::RUNTIME;
		1353
		1354	$pl->save_pl ($path);
		1355	Coro::cede;
		1356	}
		1357
		1358	sub new($) {
		1359	my ($login) = @_;
		1360
		1361	my $self = create;
		1362
		1363	$self->ob->name ($login);
		1364	$self->{deny_save} = 1;
		1365
		1366	$cf::PLAYER{$login} = $self;
		1367
		1368	$self
		1369	}
		1370
		1371	=item $pl->quit_character
		1372
		1373	Nukes the player without looking back. If logged in, the connection will
		1374	be destroyed. May block for a long time.
		1375
		1376	=cut
		1377
		1378	sub quit_character {
		1379	my ($pl) = @_;
		1380
		1381	my $name = $pl->ob->name;
		1382
		1383	$pl->{deny_save} = 1;
		1384	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1385
		1386	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1387	$pl->deactivate;
		1388	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1389	$pl->ns->destroy if $pl->ns;
		1390
		1391	my $path = playerdir $pl;
		1392	my $temp = "$path~$cf::RUNTIME~deleting~";
		1393	aio_rename $path, $temp;
		1394	delete $cf::PLAYER{$pl->ob->name};
		1395	$pl->destroy;
		1396
		1397	my $prefix = qr<^~\Q$name\E/>;
		1398
		1399	# nuke player maps
		1400	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1401
		1402	IO::AIO::aio_rmtree $temp;
		1403	}
		1404
		1405	=item $pl->kick
		1406
		1407	Kicks a player out of the game. This destroys the connection.
		1408
		1409	=cut
		1410
		1411	sub kick {
		1412	my ($pl, $kicker) = @_;
		1413
		1414	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1415	$pl->killer ("kicked");
		1416	$pl->ns->destroy;
		1417	}
		1418
		1419	=item cf::player::list_logins
		1420
		1421	Returns am arrayref of all valid playernames in the system, can take a
		1422	while and may block, so not sync_job-capable, ever.
		1423
		1424	=cut
		1425
		1426	sub list_logins {
		1427	my $dirs = aio_readdir $PLAYERDIR
		1428	or return [];
		1429
		1430	my @logins;
		1431
		1432	for my $login (@$dirs) {
		1433	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1434	aio_read $fh, 0, 512, my $buf, 0 or next;
		1435	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1436
		1437	utf8::decode $login;
		1438	push @logins, $login;
		1439	}
		1440
		1441	\@logins
		1442	}
		1443
		1444	=item $player->maps
		1445
		1446	Returns an arrayref of map paths that are private for this
		1447	player. May block.
		1448
		1449	=cut
		1450
		1451	sub maps($) {
		1452	my ($pl) = @_;
		1453
		1454	$pl = ref $pl ? $pl->ob->name : $pl;
		1455
		1456	my $files = aio_readdir playerdir $pl
		1457	or return;
		1458
		1459	my @paths;
		1460
		1461	for (@$files) {
		1462	utf8::decode $_;
		1463	next if /\.(?:pl|pst)$/;
		1464	next unless /^$PATH_SEP/o;
		1465
		1466	push @paths, cf::map::normalise "~$pl/$_";
		1467	}
		1468
		1469	\@paths
		1470	}
		1471
		1472	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1473
		1474	Expand crossfire pod fragments into protocol xml.
		1475
		1476	=cut
		1477
		1478	sub expand_cfpod {
		1479	((my $self), (local $_)) = @_;
		1480
		1481	# escape & and <
		1482	s/&/&amp;/g;
		1483	s/(?<![BIUGH])</&lt;/g;
		1484
		1485	# this is buggy, it needs to properly take care of nested <'s
		1486
		1487	1 while
		1488	# replace B<>, I<>, U<> etc.
		1489	s/B<([^\>]*)>/<b>$1<\/b>/
		1490	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1491	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1492	# replace G<male|female> tags
		1493	|| s{G<([^>|]*)\|([^>]*)>}{
		1494	$self->gender ? $2 : $1
		1495	}ge
		1496	# replace H<hint text>
		1497	|| s{H<([^\>]*)>}
		1498	{
		1499	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1500	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1501	"")
		1502	[$self->{hintmode}]
		1503	}ge;
		1504
		1505	# create single paragraphs (very hackish)
		1506	s/(?<=\S)\n(?=\w)/ /g;
		1507
		1508	# compress some whitespace
		1509	s/\s+\n/\n/g; # ws line-ends
		1510	s/\n\n+/\n/g; # double lines
		1511	s/^\n+//; # beginning lines
		1512	s/\n+$//; # ending lines
		1513
		1514	$_
		1515	}
		1516
		1517	sub hintmode {
		1518	$_[0]{hintmode} = $_[1] if @_ > 1;
		1519	$_[0]{hintmode}
		1520	}
		1521
		1522	=item $player->ext_reply ($msgid, %msg)
		1523
		1524	Sends an ext reply to the player.
		1525
		1526	=cut
		1527
		1528	sub ext_reply($$%) {
		1529	my ($self, $id, %msg) = @_;
		1530
		1531	$msg{msgid} = $id;
		1532	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1533	}
		1534
		1535	=item $player->ext_event ($type, %msg)
		1536
		1537	Sends an ext event to the client.
		1538
		1539	=cut
		1540
		1541	sub ext_event($$%) {
		1542	my ($self, $type, %msg) = @_;
		1543
		1544	$self->ns->ext_event ($type, %msg);
		1545	}
		1546
		1547	=head3 cf::region
		1548
		1549	=over 4
		1550
		1551	=cut
		1552
		1553	package cf::region;
		1554
		1555	=item cf::region::find_by_path $path
		1556
		1557	Tries to decuce the likely region for a map knowing only its path.
		1558
		1559	=cut
		1560
		1561	sub find_by_path($) {
		1562	my ($path) = @_;
		1563
		1564	my ($match, $specificity);
		1565
		1566	for my $region (list) {
		1567	if ($region->{match} && $path =~ $region->{match}) {
		1568	($match, $specificity) = ($region, $region->specificity)
		1569	if $region->specificity > $specificity;
		1570	}
		1571	}
		1572
		1573	$match
		1574	}
		1575
		1576	=back
		1577
		1578	=head3 cf::map
		1579
		1580	=over 4
		1581
		1582	=cut
		1583
		1584	package cf::map;
		1585
		1586	use Fcntl;
		1587	use Coro::AIO;
		1588
		1589	use overload
		1590	'""' => \&as_string,
		1591	fallback => 1;
		1592
		1593	our $MAX_RESET = 3600;
		1594	our $DEFAULT_RESET = 3000;
		1595
		1596	sub generate_random_map {
		1597	my ($self, $rmp) = @_;
		1598	# mit "rum" bekleckern, nicht
		1599	$self->_create_random_map (
		1600	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1601	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1602	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1603	$rmp->{exit_on_final_map},
		1604	$rmp->{xsize}, $rmp->{ysize},
		1605	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1606	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1607	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1608	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1609	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1610	(cf::region::find $rmp->{region}), $rmp->{custom}
		1611	)
		1612	}
		1613
		1614	=item cf::map->register ($regex, $prio)
		1615
		1616	Register a handler for the map path matching the given regex at the
		1617	givne priority (higher is better, built-in handlers have priority 0, the
		1618	default).
		1619
		1620	=cut
		1621
875	sub register {	1622	sub register {
		1623	my (undef, $regex, $prio) = @_;
		1624	my $pkg = caller;
		1625
		1626	no strict;
		1627	push @{"$pkg\::ISA"}, __PACKAGE__;
		1628
		1629	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1630	}
		1631
		1632	# also paths starting with '/'
		1633	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1634
		1635	sub thawer_merge {
876	my ($base, $pkg) = @_;	1636	my ($self, $merge) = @_;
877		1637
878	#TODO	1638	# we have to keep some variables in memory intact
879	}	1639	local $self->{path};
		1640	local $self->{load_path};
880		1641
881	sub load_extension {	1642	$self->SUPER::thawer_merge ($merge);
		1643	}
		1644
		1645	sub normalise {
882	my ($path) = @_;	1646	my ($path, $base) = @_;
883		1647
884	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1648	$path = "$path"; # make sure its a string
885	my $base = $1;
886	my $pkg = $1;
887	$pkg =~ s/[^[:word:]]/_/g;
888	$pkg = "ext::$pkg";
889		1649
890	warn "loading '$path' into '$pkg'\n";	1650	$path =~ s/\.map$//;
891		1651
892	open my $fh, "<:utf8", $path	1652	# map plan:
893	or die "$path: $!";	1653	#
		1654	# /! non-realised random map exit (special hack!)
		1655	# {... are special paths that are not being touched
		1656	# ?xxx/... are special absolute paths
		1657	# ?random/... random maps
		1658	# /... normal maps
		1659	# ~user/... per-player map of a specific user
894		1660
895	my $source =	1661	$path =~ s/$PATH_SEP/\//go;
896	"package $pkg; use strict; use utf8;\n"
897	. "#line 1 \"$path\"\n{\n"
898	. (do { local $/; <$fh> })
899	. "\n};\n1";
900		1662
901	eval $source	1663	# treat it as relative path if it starts with
902	or die $@ ? "$path: $@\n"	1664	# something that looks reasonable
903	: "extension disabled.\n";	1665	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1666	$base or Carp::carp "normalise called with relative path and no base: '$path'";
904		1667
905	push @exts, $pkg;	1668	$base =~ s{[^/]+/?$}{};
906	$ext_pkg{$base} = $pkg;	1669	$path = "$base/$path";
907
908	# no strict 'refs';
909	# @{"$pkg\::ISA"} = ext::;
910
911	register $base, $pkg;
912	}
913
914	sub unload_extension {
915	my ($pkg) = @_;
916
917	warn "removing extension $pkg\n";
918
919	# remove hooks
920	#TODO
921	# for my $idx (0 .. $#PLUGIN_EVENT) {
922	# delete $hook[$idx]{$pkg};
923	# }	1670	}
924		1671
925	# remove commands	1672	for ($path) {
926	for my $name (keys %COMMAND) {	1673	redo if s{//}{/};
927	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1674	redo if s{/\.?/}{/};
		1675	redo if s{/[^/]+/\.\./}{/};
		1676	}
928		1677
929	if (@cb) {	1678	$path
930	$COMMAND{$name} = \@cb;	1679	}
		1680
		1681	sub new_from_path {
		1682	my (undef, $path, $base) = @_;
		1683
		1684	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1685
		1686	$path = normalise $path, $base;
		1687
		1688	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1689	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1690	my $self = bless cf::map::new, $pkg;
		1691	$self->{path} = $path; $self->path ($path);
		1692	$self->init; # pass $1 etc.
		1693	return $self;
		1694	}
		1695	}
		1696
		1697	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1698	()
		1699	}
		1700
		1701	sub init {
		1702	my ($self) = @_;
		1703
		1704	$self
		1705	}
		1706
		1707	sub as_string {
		1708	my ($self) = @_;
		1709
		1710	"$self->{path}"
		1711	}
		1712
		1713	# the displayed name, this is a one way mapping
		1714	sub visible_name {
		1715	&as_string
		1716	}
		1717
		1718	# the original (read-only) location
		1719	sub load_path {
		1720	my ($self) = @_;
		1721
		1722	"$MAPDIR/$self->{path}.map"
		1723	}
		1724
		1725	# the temporary/swap location
		1726	sub save_path {
		1727	my ($self) = @_;
		1728
		1729	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1730	"$TMPDIR/$path.map"
		1731	}
		1732
		1733	# the unique path, undef == no special unique path
		1734	sub uniq_path {
		1735	my ($self) = @_;
		1736
		1737	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1738	"$UNIQUEDIR/$path"
		1739	}
		1740
		1741	# and all this just because we cannot iterate over
		1742	# all maps in C++...
		1743	sub change_all_map_light {
		1744	my ($change) = @_;
		1745
		1746	$_->change_map_light ($change)
		1747	for grep $_->outdoor, values %cf::MAP;
		1748	}
		1749
		1750	sub decay_objects {
		1751	my ($self) = @_;
		1752
		1753	return if $self->{deny_reset};
		1754
		1755	$self->do_decay_objects;
		1756	}
		1757
		1758	sub unlink_save {
		1759	my ($self) = @_;
		1760
		1761	utf8::encode (my $save = $self->save_path);
		1762	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1763	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1764	}
		1765
		1766	sub load_header_from($) {
		1767	my ($self, $path) = @_;
		1768
		1769	utf8::encode $path;
		1770	#aio_open $path, O_RDONLY, 0
		1771	# or return;
		1772
		1773	$self->_load_header ($path)
		1774	or return;
		1775
		1776	$self->{load_path} = $path;
		1777
		1778	1
		1779	}
		1780
		1781	sub load_header_orig {
		1782	my ($self) = @_;
		1783
		1784	$self->load_header_from ($self->load_path)
		1785	}
		1786
		1787	sub load_header_temp {
		1788	my ($self) = @_;
		1789
		1790	$self->load_header_from ($self->save_path)
		1791	}
		1792
		1793	sub prepare_temp {
		1794	my ($self) = @_;
		1795
		1796	$self->last_access ((delete $self->{last_access})
		1797	|| $cf::RUNTIME); #d#
		1798	# safety
		1799	$self->{instantiate_time} = $cf::RUNTIME
		1800	if $self->{instantiate_time} > $cf::RUNTIME;
		1801	}
		1802
		1803	sub prepare_orig {
		1804	my ($self) = @_;
		1805
		1806	$self->{load_original} = 1;
		1807	$self->{instantiate_time} = $cf::RUNTIME;
		1808	$self->last_access ($cf::RUNTIME);
		1809	$self->instantiate;
		1810	}
		1811
		1812	sub load_header {
		1813	my ($self) = @_;
		1814
		1815	if ($self->load_header_temp) {
		1816	$self->prepare_temp;
931	} else {	1817	} else {
932	delete $COMMAND{$name};	1818	$self->load_header_orig
933	}	1819	or return;
		1820	$self->prepare_orig;
		1821	}
		1822
		1823	$self->{deny_reset} = 1
		1824	if $self->no_reset;
		1825
		1826	$self->default_region (cf::region::find_by_path $self->{path})
		1827	unless $self->default_region;
		1828
934	}	1829	1
		1830	}
935		1831
936	# remove extcmds	1832	sub find;
937	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1833	sub find {
938	delete $EXTCMD{$name};	1834	my ($path, $origin) = @_;
		1835
		1836	$path = normalise $path, $origin && $origin->path;
		1837
		1838	cf::lock_wait "map_find:$path";
		1839
		1840	$cf::MAP{$path} || do {
		1841	my $guard = cf::lock_acquire "map_find:$path";
		1842	my $map = new_from_path cf::map $path
		1843	or return;
		1844
		1845	$map->{last_save} = $cf::RUNTIME;
		1846
		1847	$map->load_header
		1848	or return;
		1849
		1850	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1851	# doing this can freeze the server in a sync job, obviously
		1852	#$cf::WAIT_FOR_TICK->wait;
		1853	$map->reset;
		1854	undef $guard;
		1855	return find $path;
		1856	}
		1857
		1858	$cf::MAP{$path} = $map
		1859	}
		1860	}
		1861
		1862	sub pre_load { }
		1863	sub post_load { }
		1864
		1865	sub load {
		1866	my ($self) = @_;
		1867
		1868	local $self->{deny_reset} = 1; # loading can take a long time
		1869
		1870	my $path = $self->{path};
		1871
939	}	1872	{
		1873	my $guard = cf::lock_acquire "map_load:$path";
940		1874
941	if (my $cb = $pkg->can ("unload")) {	1875	return if $self->in_memory != cf::MAP_SWAPPED;
942	eval {	1876
943	$cb->($pkg);	1877	$self->in_memory (cf::MAP_LOADING);
		1878
		1879	$self->alloc;
		1880
		1881	$self->pre_load;
		1882	Coro::cede;
		1883
		1884	$self->_load_objects ($self->{load_path}, 1)
		1885	or return;
		1886
		1887	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1888	if delete $self->{load_original};
		1889
		1890	if (my $uniq = $self->uniq_path) {
		1891	utf8::encode $uniq;
		1892	if (aio_open $uniq, O_RDONLY, 0) {
		1893	$self->clear_unique_items;
		1894	$self->_load_objects ($uniq, 0);
944	1	1895	}
945	} or warn "$pkg unloaded, but with errors: $@";	1896	}
946	}
947		1897
948	Symbol::delete_package $pkg;	1898	Coro::cede;
949	}	1899	# now do the right thing for maps
		1900	$self->link_multipart_objects;
		1901	$self->difficulty ($self->estimate_difficulty)
		1902	unless $self->difficulty;
		1903	Coro::cede;
950		1904
951	sub load_extensions {	1905	unless ($self->{deny_activate}) {
952	for my $ext (<$LIBDIR/*.ext>) {	1906	$self->decay_objects;
953	next unless -r $ext;	1907	$self->fix_auto_apply;
954	eval {	1908	$self->update_buttons;
955	load_extension $ext;	1909	Coro::cede;
956	1	1910	$self->set_darkness_map;
957	} or warn "$ext not loaded: $@";	1911	Coro::cede;
958	}	1912	$self->activate;
959	}	1913	}
960		1914
961	#############################################################################	1915	$self->in_memory (cf::MAP_IN_MEMORY);
962	# load/save/clean perl data associated with a map	1916	}
963		1917
964	*cf::mapsupport::on_clean = sub {	1918	$self->post_load;
		1919	}
		1920
		1921	sub customise_for {
		1922	my ($self, $ob) = @_;
		1923
		1924	return find "~" . $ob->name . "/" . $self->{path}
		1925	if $self->per_player;
		1926
		1927	# return find "?party/" . $ob->name . "/" . $self->{path}
		1928	# if $self->per_party;
		1929
		1930	$self
		1931	}
		1932
		1933	# find and load all maps in the 3x3 area around a map
		1934	sub load_diag {
965	my ($map) = @_;	1935	my ($map) = @_;
966		1936
967	my $path = $map->tmpname;	1937	my @diag; # diagonal neighbours
968	defined $path or return;
969		1938
970	unlink "$path.pst";	1939	for (0 .. 3) {
971	};	1940	my $neigh = $map->tile_path ($_)
		1941	or next;
		1942	$neigh = find $neigh, $map
		1943	or next;
		1944	$neigh->load;
972		1945
973	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1946	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1947	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1948	}
974		1949
975	#############################################################################	1950	for (@diag) {
976	# load/save perl data associated with player->ob objects	1951	my $neigh = find @$_
977		1952	or next;
978	sub all_objects(@) {	1953	$neigh->load;
979	@_, map all_objects ($_->inv), @_	1954	}
980	}	1955	}
981		1956
982	# TODO: compatibility cruft, remove when no longer needed	1957	sub find_sync {
983	cf::player->attach (	1958	my ($path, $origin) = @_;
984	on_load => sub {
985	my ($pl, $path) = @_;
986		1959
987	for my $o (all_objects $pl->ob) {	1960	cf::sync_job { find $path, $origin }
988	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1961	}
989	$o->set_ob_key_value ("_perl_data");
990		1962
991	%$o = %{ Storable::thaw pack "H*", $value };	1963	sub do_load_sync {
		1964	my ($map) = @_;
		1965
		1966	cf::sync_job { $map->load };
		1967	}
		1968
		1969	our %MAP_PREFETCH;
		1970	our $MAP_PREFETCHER = undef;
		1971
		1972	sub find_async {
		1973	my ($path, $origin) = @_;
		1974
		1975	$path = normalise $path, $origin && $origin->{path};
		1976
		1977	if (my $map = $cf::MAP{$path}) {
		1978	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1979	}
		1980
		1981	undef $MAP_PREFETCH{$path};
		1982	$MAP_PREFETCHER ||= cf::async {
		1983	while (%MAP_PREFETCH) {
		1984	for my $path (keys %MAP_PREFETCH) {
		1985	if (my $map = find $path) {
		1986	$map->load;
		1987	}
		1988
		1989	delete $MAP_PREFETCH{$path};
992	}	1990	}
993	}	1991	}
		1992	undef $MAP_PREFETCHER;
		1993	};
		1994	$MAP_PREFETCHER->prio (6);
		1995
		1996	()
		1997	}
		1998
		1999	sub save {
		2000	my ($self) = @_;
		2001
		2002	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2003
		2004	$self->{last_save} = $cf::RUNTIME;
		2005
		2006	return unless $self->dirty;
		2007
		2008	my $save = $self->save_path; utf8::encode $save;
		2009	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2010
		2011	$self->{load_path} = $save;
		2012
		2013	return if $self->{deny_save};
		2014
		2015	local $self->{last_access} = $self->last_access;#d#
		2016
		2017	cf::async {
		2018	$_->contr->save for $self->players;
		2019	};
		2020
		2021	if ($uniq) {
		2022	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2023	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2024	} else {
		2025	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
994	},	2026	}
995	);	2027	}
996		2028
997	#############################################################################	2029	sub swap_out {
		2030	my ($self) = @_;
998		2031
999	=head2 CORE EXTENSIONS	2032	# save first because save cedes
		2033	$self->save;
1000		2034
1001	Functions and methods that extend core crossfire objects.	2035	my $lock = cf::lock_acquire "map_data:" . $self->path;
1002		2036
1003	=head3 cf::player	2037	return if $self->players;
		2038	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2039	return if $self->{deny_save};
		2040
		2041	$self->clear;
		2042	$self->in_memory (cf::MAP_SWAPPED);
		2043	}
		2044
		2045	sub reset_at {
		2046	my ($self) = @_;
		2047
		2048	# TODO: safety, remove and allow resettable per-player maps
		2049	return 1e99 if $self->{deny_reset};
		2050
		2051	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2052	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2053
		2054	$time + $to
		2055	}
		2056
		2057	sub should_reset {
		2058	my ($self) = @_;
		2059
		2060	$self->reset_at <= $cf::RUNTIME
		2061	}
		2062
		2063	sub reset {
		2064	my ($self) = @_;
		2065
		2066	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2067
		2068	return if $self->players;
		2069
		2070	warn "resetting map ", $self->path;
		2071
		2072	$self->in_memory (cf::MAP_SWAPPED);
		2073
		2074	# need to save uniques path
		2075	unless ($self->{deny_save}) {
		2076	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2077
		2078	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2079	if $uniq;
		2080	}
		2081
		2082	delete $cf::MAP{$self->path};
		2083
		2084	$self->clear;
		2085
		2086	$_->clear_links_to ($self) for values %cf::MAP;
		2087
		2088	$self->unlink_save;
		2089	$self->destroy;
		2090	}
		2091
		2092	my $nuke_counter = "aaaa";
		2093
		2094	sub nuke {
		2095	my ($self) = @_;
		2096
		2097	delete $cf::MAP{$self->path};
		2098
		2099	$self->unlink_save;
		2100
		2101	bless $self, "cf::map";
		2102	delete $self->{deny_reset};
		2103	$self->{deny_save} = 1;
		2104	$self->reset_timeout (1);
		2105	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2106
		2107	$cf::MAP{$self->path} = $self;
		2108
		2109	$self->reset; # polite request, might not happen
		2110	}
		2111
		2112	=item $maps = cf::map::tmp_maps
		2113
		2114	Returns an arrayref with all map paths of currently instantiated and saved
		2115	maps. May block.
		2116
		2117	=cut
		2118
		2119	sub tmp_maps() {
		2120	[
		2121	map {
		2122	utf8::decode $_;
		2123	/\.map$/
		2124	? normalise $_
		2125	: ()
		2126	} @{ aio_readdir $TMPDIR or [] }
		2127	]
		2128	}
		2129
		2130	=item $maps = cf::map::random_maps
		2131
		2132	Returns an arrayref with all map paths of currently instantiated and saved
		2133	random maps. May block.
		2134
		2135	=cut
		2136
		2137	sub random_maps() {
		2138	[
		2139	map {
		2140	utf8::decode $_;
		2141	/\.map$/
		2142	? normalise "?random/$_"
		2143	: ()
		2144	} @{ aio_readdir $RANDOMDIR or [] }
		2145	]
		2146	}
		2147
		2148	=item cf::map::unique_maps
		2149
		2150	Returns an arrayref of paths of all shared maps that have
		2151	instantiated unique items. May block.
		2152
		2153	=cut
		2154
		2155	sub unique_maps() {
		2156	[
		2157	map {
		2158	utf8::decode $_;
		2159	/\.map$/
		2160	? normalise $_
		2161	: ()
		2162	} @{ aio_readdir $UNIQUEDIR or [] }
		2163	]
		2164	}
		2165
		2166	package cf;
		2167
		2168	=back
		2169
		2170	=head3 cf::object
		2171
		2172	=cut
		2173
		2174	package cf::object;
1004		2175
1005	=over 4	2176	=over 4
1006		2177
1007	=item cf::player::exists $login	2178	=item $ob->inv_recursive
1008		2179
1009	Returns true when the given account exists.	2180	Returns the inventory of the object _and_ their inventories, recursively.
1010		2181
1011	=cut	2182	=cut
1012		2183
1013	sub cf::player::exists($) {	2184	sub inv_recursive_;
1014	cf::player::find $_[0]	2185	sub inv_recursive_ {
1015	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2186	map { $_, inv_recursive_ $_->inv } @_
1016	}	2187	}
1017		2188
1018	=item $player->ext_reply ($msgid, $msgtype, %msg)	2189	sub inv_recursive {
1019		2190	inv_recursive_ inv $_[0]
1020	Sends an ext reply to the player.
1021
1022	=cut
1023
1024	sub cf::player::ext_reply($$$%) {
1025	my ($self, $id, %msg) = @_;
1026
1027	$msg{msgid} = $id;
1028
1029	$self->send ("ext " . to_json \%msg);
1030	}	2191	}
		2192
		2193	package cf;
1031		2194
1032	=back	2195	=back
1033		2196
1034	=head3 cf::object::player	2197	=head3 cf::object::player
1035		2198
…		…
1051		2214
1052	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2215	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1053		2216
1054	if ($self->{record_replies}) {	2217	if ($self->{record_replies}) {
1055	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2218	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2219
1056	} else {	2220	} else {
		2221	my $pl = $self->contr;
		2222
		2223	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2224	my $diag = $pl->{npc_dialog};
		2225	$diag->{pl}->ext_reply (
		2226	$diag->{id},
		2227	msgtype => "reply",
		2228	msg => $diag->{pl}->expand_cfpod ($msg),
		2229	add_topics => []
		2230	);
		2231
		2232	} else {
1057	$msg = $npc->name . " says: $msg" if $npc;	2233	$msg = $npc->name . " says: $msg" if $npc;
1058	$self->message ($msg, $flags);	2234	$self->message ($msg, $flags);
		2235	}
1059	}	2236	}
1060	}	2237	}
1061		2238
1062	=item $player_object->may ("access")	2239	=item $player_object->may ("access")
1063		2240
…		…
1073	(ref $cf::CFG{"may_$access"}	2250	(ref $cf::CFG{"may_$access"}
1074	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2251	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1075	: $cf::CFG{"may_$access"})	2252	: $cf::CFG{"may_$access"})
1076	}	2253	}
1077		2254
		2255	=item $player_object->enter_link
		2256
		2257	Freezes the player and moves him/her to a special map (C<{link}>).
		2258
		2259	The player should be reasonably safe there for short amounts of time. You
		2260	I<MUST> call C<leave_link> as soon as possible, though.
		2261
		2262	Will never block.
		2263
		2264	=item $player_object->leave_link ($map, $x, $y)
		2265
		2266	Moves the player out of the special C<{link}> map onto the specified
		2267	map. If the map is not valid (or omitted), the player will be moved back
		2268	to the location he/she was before the call to C<enter_link>, or, if that
		2269	fails, to the emergency map position.
		2270
		2271	Might block.
		2272
		2273	=cut
		2274
		2275	sub link_map {
		2276	unless ($LINK_MAP) {
		2277	$LINK_MAP = cf::map::find "{link}"
		2278	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2279	$LINK_MAP->load;
		2280	}
		2281
		2282	$LINK_MAP
		2283	}
		2284
		2285	sub cf::object::player::enter_link {
		2286	my ($self) = @_;
		2287
		2288	$self->deactivate_recursive;
		2289
		2290	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2291
		2292	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2293	if $self->map && $self->map->{path} ne "{link}";
		2294
		2295	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2296	}
		2297
		2298	sub cf::object::player::leave_link {
		2299	my ($self, $map, $x, $y) = @_;
		2300
		2301	return unless $self->contr->active;
		2302
		2303	my $link_pos = delete $self->{_link_pos};
		2304
		2305	unless ($map) {
		2306	# restore original map position
		2307	($map, $x, $y) = @{ $link_pos || [] };
		2308	$map = cf::map::find $map;
		2309
		2310	unless ($map) {
		2311	($map, $x, $y) = @$EMERGENCY_POSITION;
		2312	$map = cf::map::find $map
		2313	or die "FATAL: cannot load emergency map\n";
		2314	}
		2315	}
		2316
		2317	($x, $y) = (-1, -1)
		2318	unless (defined $x) && (defined $y);
		2319
		2320	# use -1 or undef as default coordinates, not 0, 0
		2321	($x, $y) = ($map->enter_x, $map->enter_y)
		2322	if $x <=0 && $y <= 0;
		2323
		2324	$map->load;
		2325	$map->load_diag;
		2326
		2327	return unless $self->contr->active;
		2328	$self->activate_recursive;
		2329
		2330	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2331	$self->enter_map ($map, $x, $y);
		2332	}
		2333
		2334	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2335
		2336	Moves the player to the given map-path and coordinates by first freezing
		2337	her, loading and preparing them map, calling the provided $check callback
		2338	that has to return the map if sucecssful, and then unfreezes the player on
		2339	the new (success) or old (failed) map position. In either case, $done will
		2340	be called at the end of this process.
		2341
		2342	=cut
		2343
		2344	our $GOTOGEN;
		2345
		2346	sub cf::object::player::goto {
		2347	my ($self, $path, $x, $y, $check, $done) = @_;
		2348
		2349	# do generation counting so two concurrent goto's will be executed in-order
		2350	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2351
		2352	$self->enter_link;
		2353
		2354	(async {
		2355	my $map = eval {
		2356	my $map = cf::map::find $path;
		2357
		2358	if ($map) {
		2359	$map = $map->customise_for ($self);
		2360	$map = $check->($map) if $check && $map;
		2361	} else {
		2362	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2363	}
		2364
		2365	$map
		2366	};
		2367
		2368	if ($@) {
		2369	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2370	LOG llevError | logBacktrace, Carp::longmess $@;
		2371	}
		2372
		2373	if ($gen == $self->{_goto_generation}) {
		2374	delete $self->{_goto_generation};
		2375	$self->leave_link ($map, $x, $y);
		2376	}
		2377
		2378	$done->() if $done;
		2379	})->prio (1);
		2380	}
		2381
		2382	=item $player_object->enter_exit ($exit_object)
		2383
		2384	=cut
		2385
		2386	sub parse_random_map_params {
		2387	my ($spec) = @_;
		2388
		2389	my $rmp = { # defaults
		2390	xsize => (cf::rndm 15, 40),
		2391	ysize => (cf::rndm 15, 40),
		2392	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2393	#layout => string,
		2394	};
		2395
		2396	for (split /\n/, $spec) {
		2397	my ($k, $v) = split /\s+/, $_, 2;
		2398
		2399	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2400	}
		2401
		2402	$rmp
		2403	}
		2404
		2405	sub prepare_random_map {
		2406	my ($exit) = @_;
		2407
		2408	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2409
		2410	# all this does is basically replace the /! path by
		2411	# a new random map path (?random/...) with a seed
		2412	# that depends on the exit object
		2413
		2414	my $rmp = parse_random_map_params $exit->msg;
		2415
		2416	if ($exit->map) {
		2417	$rmp->{region} = $exit->region->name;
		2418	$rmp->{origin_map} = $exit->map->path;
		2419	$rmp->{origin_x} = $exit->x;
		2420	$rmp->{origin_y} = $exit->y;
		2421	}
		2422
		2423	$rmp->{random_seed} ||= $exit->random_seed;
		2424
		2425	my $data = cf::to_json $rmp;
		2426	my $md5 = Digest::MD5::md5_hex $data;
		2427	my $meta = "$RANDOMDIR/$md5.meta";
		2428
		2429	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2430	aio_write $fh, 0, (length $data), $data, 0;
		2431	undef $fh;
		2432	aio_rename "$meta~", $meta;
		2433
		2434	$exit->slaying ("?random/$md5");
		2435	$exit->msg (undef);
		2436	}
		2437	}
		2438
		2439	sub cf::object::player::enter_exit {
		2440	my ($self, $exit) = @_;
		2441
		2442	return unless $self->type == cf::PLAYER;
		2443
		2444	if ($exit->slaying eq "/!") {
		2445	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2446	# the problem is that $exit might not survive long enough
		2447	# so it needs to be done right now, right here
		2448	cf::sync_job { prepare_random_map $exit };
		2449	}
		2450
		2451	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2452	my $hp = $exit->stats->hp;
		2453	my $sp = $exit->stats->sp;
		2454
		2455	$self->enter_link;
		2456
		2457	# if exit is damned, update players death & WoR home-position
		2458	$self->contr->savebed ($slaying, $hp, $sp)
		2459	if $exit->flag (FLAG_DAMNED);
		2460
		2461	(async {
		2462	$self->deactivate_recursive; # just to be sure
		2463	unless (eval {
		2464	$self->goto ($slaying, $hp, $sp);
		2465
		2466	1;
		2467	}) {
		2468	$self->message ("Something went wrong deep within the crossfire server. "
		2469	. "I'll try to bring you back to the map you were before. "
		2470	. "Please report this to the dungeon master!",
		2471	cf::NDI_UNIQUE | cf::NDI_RED);
		2472
		2473	warn "ERROR in enter_exit: $@";
		2474	$self->leave_link;
		2475	}
		2476	})->prio (1);
		2477	}
		2478
1078	=head3 cf::client	2479	=head3 cf::client
1079		2480
1080	=over 4	2481	=over 4
1081		2482
1082	=item $client->send_drawinfo ($text, $flags)	2483	=item $client->send_drawinfo ($text, $flags)
…		…
1088		2489
1089	sub cf::client::send_drawinfo {	2490	sub cf::client::send_drawinfo {
1090	my ($self, $text, $flags) = @_;	2491	my ($self, $text, $flags) = @_;
1091		2492
1092	utf8::encode $text;	2493	utf8::encode $text;
1093	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2494	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1094	}	2495	}
1095		2496
		2497	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2498
		2499	Send a drawinfo or msg packet to the client, formatting the msg for the
		2500	client if neccessary. C<$type> should be a string identifying the type of
		2501	the message, with C<log> being the default. If C<$color> is negative, suppress
		2502	the message unless the client supports the msg packet.
		2503
		2504	=cut
		2505
		2506	sub cf::client::send_msg {
		2507	my ($self, $channel, $msg, $color, @extra) = @_;
		2508
		2509	$msg = $self->pl->expand_cfpod ($msg);
		2510
		2511	$color &= ~cf::NDI_UNIQUE; # just in case...
		2512
		2513	if (ref $channel) {
		2514	# send meta info to client, if not yet sent
		2515	unless (exists $self->{channel}{$channel->{id}}) {
		2516	$self->{channel}{$channel->{id}} = $channel;
		2517	$self->ext_event (channel_info => %$channel);
		2518	}
		2519
		2520	$channel = $channel->{id};
		2521	}
		2522
		2523	return unless @extra || length $msg;
		2524
		2525	if ($self->can_msg) {
		2526	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $channel, $msg, @extra]));
		2527	} else {
		2528	# replace some tags by gcfclient-compatible ones
		2529	for ($msg) {
		2530	1 while
		2531	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2532	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2533	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2534	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2535	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2536	}
		2537
		2538	if ($color >= 0) {
		2539	if (0 && $msg =~ /\[/) {
		2540	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2541	} else {
		2542	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2543	$self->send_packet ("drawinfo $color $msg")
		2544	}
		2545	}
		2546	}
		2547	}
		2548
		2549	=item $client->ext_event ($type, %msg)
		2550
		2551	Sends an ext event to the client.
		2552
		2553	=cut
		2554
		2555	sub cf::client::ext_event($$%) {
		2556	my ($self, $type, %msg) = @_;
		2557
		2558	return unless $self->extcmd;
		2559
		2560	$msg{msgtype} = "event_$type";
		2561	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
		2562	}
1096		2563
1097	=item $success = $client->query ($flags, "text", \&cb)	2564	=item $success = $client->query ($flags, "text", \&cb)
1098		2565
1099	Queues a query to the client, calling the given callback with	2566	Queues a query to the client, calling the given callback with
1100	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2567	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
1101	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2568	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1102		2569
1103	Queries can fail, so check the return code. Or don't, as queries will become	2570	Queries can fail, so check the return code. Or don't, as queries will
1104	reliable at some point in the future.	2571	become reliable at some point in the future.
1105		2572
1106	=cut	2573	=cut
1107		2574
1108	sub cf::client::query {	2575	sub cf::client::query {
1109	my ($self, $flags, $text, $cb) = @_;	2576	my ($self, $flags, $text, $cb) = @_;
…		…
1117	utf8::encode $text;	2584	utf8::encode $text;
1118	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2585	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1119		2586
1120	$self->send_packet ($self->{query_queue}[0][0])	2587	$self->send_packet ($self->{query_queue}[0][0])
1121	if @{ $self->{query_queue} } == 1;	2588	if @{ $self->{query_queue} } == 1;
		2589
		2590	1
1122	}	2591	}
1123		2592
1124	cf::client->attach (	2593	cf::client->attach (
		2594	on_connect => sub {
		2595	my ($ns) = @_;
		2596
		2597	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2598	},
1125	on_reply => sub {	2599	on_reply => sub {
1126	my ($ns, $msg) = @_;	2600	my ($ns, $msg) = @_;
1127		2601
1128	# this weird shuffling is so that direct followup queries	2602	# this weird shuffling is so that direct followup queries
1129	# get handled first	2603	# get handled first
1130	my $queue = delete $ns->{query_queue};	2604	my $queue = delete $ns->{query_queue}
		2605	or return; # be conservative, not sure how that can happen, but we saw a crash here
1131		2606
1132	(shift @$queue)->[1]->($msg);	2607	(shift @$queue)->[1]->($msg);
		2608	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
1133		2609
1134	push @{ $ns->{query_queue} }, @$queue;	2610	push @{ $ns->{query_queue} }, @$queue;
1135		2611
1136	if (@{ $ns->{query_queue} } == @$queue) {	2612	if (@{ $ns->{query_queue} } == @$queue) {
1137	if (@$queue) {	2613	if (@$queue) {
…		…
1139	} else {	2615	} else {
1140	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2616	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
1141	}	2617	}
1142	}	2618	}
1143	},	2619	},
		2620	on_exticmd => sub {
		2621	my ($ns, $buf) = @_;
		2622
		2623	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2624
		2625	if (ref $msg) {
		2626	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2627	if (my %reply = $cb->($ns, $msg)) {
		2628	$reply{msgid} = $msg->{msgid};
		2629	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2630	}
		2631	}
		2632	} else {
		2633	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2634	}
		2635
		2636	cf::override;
		2637	},
1144	);	2638	);
1145		2639
1146	=item $client->coro (\&cb)	2640	=item $client->async (\&cb)
1147		2641
1148	Create a new coroutine, running the specified callback. The coroutine will	2642	Create a new coroutine, running the specified callback. The coroutine will
1149	be automatically cancelled when the client gets destroyed (e.g. on logout,	2643	be automatically cancelled when the client gets destroyed (e.g. on logout,
1150	or loss of connection).	2644	or loss of connection).
1151		2645
1152	=cut	2646	=cut
1153		2647
1154	sub cf::client::coro {	2648	sub cf::client::async {
1155	my ($self, $cb) = @_;	2649	my ($self, $cb) = @_;
1156		2650
1157	my $coro; $coro = async {	2651	my $coro = &Coro::async ($cb);
1158	eval {
1159	$cb->();
1160	};
1161	warn $@ if $@;
1162	};
1163		2652
1164	$coro->on_destroy (sub {	2653	$coro->on_destroy (sub {
1165	delete $self->{_coro}{$coro+0};	2654	delete $self->{_coro}{$coro+0};
1166	});	2655	});
1167		2656
…		…
1200		2689
1201	# here we export the classes and methods available to script code	2690	# here we export the classes and methods available to script code
1202		2691
1203	=pod	2692	=pod
1204		2693
1205	The following fucntions and emthods are available within a safe environment:	2694	The following functions and methods are available within a safe environment:
1206		2695
1207	cf::object contr pay_amount pay_player map	2696	cf::object
		2697	contr pay_amount pay_player map x y force_find force_add
		2698	insert remove
		2699
1208	cf::object::player player	2700	cf::object::player
1209	cf::player peaceful	2701	player
1210	cf::map trigger	2702
		2703	cf::player
		2704	peaceful
		2705
		2706	cf::map
		2707	trigger
1211		2708
1212	=cut	2709	=cut
1213		2710
1214	for (	2711	for (
1215	["cf::object" => qw(contr pay_amount pay_player map)],	2712	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2713	insert remove)],
1216	["cf::object::player" => qw(player)],	2714	["cf::object::player" => qw(player)],
1217	["cf::player" => qw(peaceful)],	2715	["cf::player" => qw(peaceful)],
1218	["cf::map" => qw(trigger)],	2716	["cf::map" => qw(trigger)],
1219	) {	2717	) {
1220	no strict 'refs';	2718	no strict 'refs';
…		…
1291	=back	2789	=back
1292		2790
1293	=cut	2791	=cut
1294		2792
1295	#############################################################################	2793	#############################################################################
		2794	# the server's init and main functions
1296		2795
1297	=head2 EXTENSION DATABASE SUPPORT	2796	sub load_facedata($) {
		2797	my ($path) = @_;
1298		2798
1299	Crossfire maintains a very simple database for extension use. It can	2799	warn "loading facedata from $path\n";
1300	currently store anything that can be serialised using Storable, which
1301	excludes objects.
1302		2800
1303	The parameter C<$family> should best start with the name of the extension	2801	my $facedata;
1304	using it, it should be unique.	2802	0 < aio_load $path, $facedata
		2803	or die "$path: $!";
1305		2804
1306	=over 4	2805	$facedata = Coro::Storable::thaw $facedata;
1307		2806
1308	=item $hashref = cf::db_get $family	2807	$facedata->{version} == 2
		2808	or cf::cleanup "$path: version mismatch, cannot proceed.";
1309		2809
1310	Return a hashref for use by the extension C<$family>, which can be
1311	modified. After modifications, you have to call C<cf::db_dirty> or
1312	C<cf::db_sync>.
1313
1314	=item $value = cf::db_get $family => $key
1315
1316	Returns a single value from the database
1317
1318	=item cf::db_put $family => $hashref
1319
1320	Stores the given family hashref into the database. Updates are delayed, if
1321	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1322
1323	=item cf::db_put $family => $key => $value
1324
1325	Stores the given C<$value> in the family hash. Updates are delayed, if you
1326	want the data to be synced to disk immediately, use C<cf::db_sync>.
1327
1328	=item cf::db_dirty
1329
1330	Marks the database as dirty, to be updated at a later time.
1331
1332	=item cf::db_sync
1333
1334	Immediately write the database to disk I<if it is dirty>.
1335
1336	=cut
1337
1338	our $DB;
1339
1340	{
1341	my $path = cf::localdir . "/database.pst";
1342
1343	sub db_load() {
1344	warn "loading database $path\n";#d# remove later
1345	$DB = stat $path ? Storable::retrieve $path : { };
1346	}	2810	{
		2811	my $faces = $facedata->{faceinfo};
1347		2812
1348	my $pid;	2813	while (my ($face, $info) = each %$faces) {
		2814	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2815	cf::face::set_visibility $idx, $info->{visibility};
		2816	cf::face::set_magicmap $idx, $info->{magicmap};
		2817	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2818	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
1349		2819
1350	sub db_save() {	2820	cf::cede_to_tick;
1351	warn "saving database $path\n";#d# remove later
1352	waitpid $pid, 0 if $pid;
1353	if (0 == ($pid = fork)) {
1354	$DB->{_meta}{version} = 1;
1355	Storable::nstore $DB, "$path~";
1356	rename "$path~", $path;
1357	cf::_exit 0 if defined $pid;
1358	}
1359	}
1360
1361	my $dirty;
1362
1363	sub db_sync() {
1364	db_save if $dirty;
1365	undef $dirty;
1366	}
1367
1368	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1369	db_sync;
1370	});
1371
1372	sub db_dirty() {
1373	$dirty = 1;
1374	$idle->start;
1375	}
1376
1377	sub db_get($;$) {
1378	@_ >= 2
1379	? $DB->{$_[0]}{$_[1]}
1380	: ($DB->{$_[0]} ||= { })
1381	}
1382
1383	sub db_put($$;$) {
1384	if (@_ >= 3) {
1385	$DB->{$_[0]}{$_[1]} = $_[2];
1386	} else {
1387	$DB->{$_[0]} = $_[1];
1388	}
1389	db_dirty;
1390	}
1391
1392	cf::global->attach (
1393	prio => 10000,
1394	on_cleanup => sub {
1395	db_sync;
1396	},	2821	}
1397	);
1398	}
1399		2822
1400	#############################################################################	2823	while (my ($face, $info) = each %$faces) {
1401	# the server's main()	2824	next unless $info->{smooth};
		2825	my $idx = cf::face::find $face
		2826	or next;
		2827	if (my $smooth = cf::face::find $info->{smooth}) {
		2828	cf::face::set_smooth $idx, $smooth;
		2829	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2830	} else {
		2831	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2832	}
		2833
		2834	cf::cede_to_tick;
		2835	}
		2836	}
		2837
		2838	{
		2839	my $anims = $facedata->{animinfo};
		2840
		2841	while (my ($anim, $info) = each %$anims) {
		2842	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2843	cf::cede_to_tick;
		2844	}
		2845
		2846	cf::anim::invalidate_all; # d'oh
		2847	}
		2848
		2849	{
		2850	# TODO: for gcfclient pleasure, we should give resources
		2851	# that gcfclient doesn't grok a >10000 face index.
		2852	my $res = $facedata->{resource};
		2853	my $enc = JSON::XS->new->utf8->canonical;
		2854
		2855	while (my ($name, $info) = each %$res) {
		2856	my $meta = $enc->encode ({
		2857	name => $name,
		2858	type => $info->{type},
		2859	copyright => $info->{copyright}, #TODO#
		2860	});
		2861
		2862	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2863
		2864	if ($name =~ /\.jpg$/) {
		2865	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2866	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2867	} else {
		2868	my $data = pack "(w/a*)*", $meta, $info->{data};
		2869	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2870
		2871	cf::face::set_type $idx, 1;
		2872	cf::face::set_data $idx, 0, $data, $chk;
		2873	}
		2874
		2875	cf::cede_to_tick;
		2876	}
		2877	}
		2878
		2879	1
		2880	}
		2881
		2882	sub reload_regions {
		2883	load_resource_file "$MAPDIR/regions"
		2884	or die "unable to load regions file\n";
		2885
		2886	for (cf::region::list) {
		2887	$_->{match} = qr/$_->{match}/
		2888	if exists $_->{match};
		2889	}
		2890	}
		2891
		2892	sub reload_facedata {
		2893	load_facedata "$DATADIR/facedata"
		2894	or die "unable to load facedata\n";
		2895	}
		2896
		2897	sub reload_archetypes {
		2898	load_resource_file "$DATADIR/archetypes"
		2899	or die "unable to load archetypes\n";
		2900	#d# NEED to laod twice to resolve forward references
		2901	# this really needs to be done in an extra post-pass
		2902	# (which needs to be synchronous, so solve it differently)
		2903	load_resource_file "$DATADIR/archetypes"
		2904	or die "unable to load archetypes\n";
		2905	}
		2906
		2907	sub reload_treasures {
		2908	load_resource_file "$DATADIR/treasures"
		2909	or die "unable to load treasurelists\n";
		2910	}
		2911
		2912	sub reload_resources {
		2913	warn "reloading resource files...\n";
		2914
		2915	reload_regions;
		2916	reload_facedata;
		2917	#reload_archetypes;#d#
		2918	reload_archetypes;
		2919	reload_treasures;
		2920
		2921	warn "finished reloading resource files\n";
		2922	}
		2923
		2924	sub init {
		2925	reload_resources;
		2926	}
1402		2927
1403	sub cfg_load {	2928	sub cfg_load {
1404	open my $fh, "<:utf8", cf::confdir . "/config"	2929	open my $fh, "<:utf8", "$CONFDIR/config"
1405	or return;	2930	or return;
1406		2931
1407	local $/;	2932	local $/;
1408	*CFG = YAML::Syck::Load <$fh>;	2933	*CFG = YAML::Syck::Load <$fh>;
		2934
		2935	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2936
		2937	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2938	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2939
		2940	if (exists $CFG{mlockall}) {
		2941	eval {
		2942	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2943	and die "WARNING: m(un)lockall failed: $!\n";
		2944	};
		2945	warn $@ if $@;
		2946	}
1409	}	2947	}
1410		2948
1411	sub main {	2949	sub main {
1412	# we must not ever block the main coroutine	2950	# we must not ever block the main coroutine
1413	local $Coro::idle = sub {	2951	local $Coro::idle = sub {
1414	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	2952	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
1415	(Coro::unblock_sub {	2953	(async {
1416	Event::one_event;	2954	Event::one_event;
1417	})->();	2955	})->prio (Coro::PRIO_MAX);
1418	};	2956	};
1419		2957
1420	cfg_load;	2958	cfg_load;
1421	db_load;	2959	db_init;
1422	load_extensions;	2960	load_extensions;
		2961
		2962	$TICK_WATCHER->start;
1423	Event::loop;	2963	Event::loop;
1424	}	2964	}
1425		2965
1426	#############################################################################	2966	#############################################################################
1427	# initialisation	2967	# initialisation and cleanup
1428		2968
1429	sub perl_reload() {	2969	# install some emergency cleanup handlers
		2970	BEGIN {
		2971	for my $signal (qw(INT HUP TERM)) {
		2972	Event->signal (
		2973	reentrant => 0,
		2974	data => WF_AUTOCANCEL,
		2975	signal => $signal,
		2976	prio => 0,
		2977	cb => sub {
		2978	cf::cleanup "SIG$signal";
		2979	},
		2980	);
		2981	}
		2982	}
		2983
		2984	sub write_runtime {
		2985	my $runtime = "$LOCALDIR/runtime";
		2986
		2987	# first touch the runtime file to show we are still running:
		2988	# the fsync below can take a very very long time.
		2989
		2990	IO::AIO::aio_utime $runtime, undef, undef;
		2991
		2992	my $guard = cf::lock_acquire "write_runtime";
		2993
		2994	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2995	or return;
		2996
		2997	my $value = $cf::RUNTIME + 90 + 10;
		2998	# 10 is the runtime save interval, for a monotonic clock
		2999	# 60 allows for the watchdog to kill the server.
		3000
		3001	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3002	and return;
		3003
		3004	# always fsync - this file is important
		3005	aio_fsync $fh
		3006	and return;
		3007
		3008	# touch it again to show we are up-to-date
		3009	aio_utime $fh, undef, undef;
		3010
		3011	close $fh
		3012	or return;
		3013
		3014	aio_rename "$runtime~", $runtime
		3015	and return;
		3016
		3017	warn "runtime file written.\n";
		3018
		3019	1
		3020	}
		3021
		3022	sub emergency_save() {
		3023	my $freeze_guard = cf::freeze_mainloop;
		3024
		3025	warn "enter emergency perl save\n";
		3026
		3027	cf::sync_job {
		3028	# use a peculiar iteration method to avoid tripping on perl
		3029	# refcount bugs in for. also avoids problems with players
		3030	# and maps saved/destroyed asynchronously.
		3031	warn "begin emergency player save\n";
		3032	for my $login (keys %cf::PLAYER) {
		3033	my $pl = $cf::PLAYER{$login} or next;
		3034	$pl->valid or next;
		3035	$pl->save;
		3036	}
		3037	warn "end emergency player save\n";
		3038
		3039	warn "begin emergency map save\n";
		3040	for my $path (keys %cf::MAP) {
		3041	my $map = $cf::MAP{$path} or next;
		3042	$map->valid or next;
		3043	$map->save;
		3044	}
		3045	warn "end emergency map save\n";
		3046
		3047	warn "begin emergency database checkpoint\n";
		3048	BDB::db_env_txn_checkpoint $DB_ENV;
		3049	warn "end emergency database checkpoint\n";
		3050	};
		3051
		3052	warn "leave emergency perl save\n";
		3053	}
		3054
		3055	sub post_cleanup {
		3056	my ($make_core) = @_;
		3057
		3058	warn Carp::longmess "post_cleanup backtrace"
		3059	if $make_core;
		3060	}
		3061
		3062	sub do_reload_perl() {
1430	# can/must only be called in main	3063	# can/must only be called in main
1431	if ($Coro::current != $Coro::main) {	3064	if ($Coro::current != $Coro::main) {
1432	warn "can only reload from main coroutine\n";	3065	warn "can only reload from main coroutine";
1433	return;	3066	return;
1434	}	3067	}
1435		3068
1436	warn "reloading...";	3069	warn "reloading...";
1437		3070
1438	local $FREEZE = 1;	3071	warn "entering sync_job";
		3072
		3073	cf::sync_job {
		3074	cf::write_runtime; # external watchdog should not bark
1439	cf::emergency_save;	3075	cf::emergency_save;
		3076	cf::write_runtime; # external watchdog should not bark
1440		3077
1441	eval {	3078	warn "syncing database to disk";
		3079	BDB::db_env_txn_checkpoint $DB_ENV;
		3080
1442	# if anything goes wrong in here, we should simply crash as we already saved	3081	# if anything goes wrong in here, we should simply crash as we already saved
1443		3082
1444	# cancel all watchers	3083	warn "cancelling all WF_AUTOCANCEL watchers";
1445	for (Event::all_watchers) {	3084	for (Event::all_watchers) {
1446	$_->cancel if $_->data & WF_AUTOCANCEL;	3085	$_->cancel if $_->data & WF_AUTOCANCEL;
1447	}	3086	}
1448		3087
		3088	warn "flushing outstanding aio requests";
		3089	for (;;) {
		3090	BDB::flush;
		3091	IO::AIO::flush;
		3092	Coro::cede;
		3093	last unless IO::AIO::nreqs || BDB::nreqs;
		3094	warn "iterate...";
		3095	}
		3096
		3097	++$RELOAD;
		3098
1449	# cancel all extension coros	3099	warn "cancelling all extension coros";
1450	$_->cancel for values %EXT_CORO;	3100	$_->cancel for values %EXT_CORO;
1451	%EXT_CORO = ();	3101	%EXT_CORO = ();
1452		3102
1453	# unload all extensions	3103	warn "removing commands";
1454	for (@exts) {	3104	%COMMAND = ();
		3105
		3106	warn "removing ext/exti commands";
		3107	%EXTCMD = ();
		3108	%EXTICMD = ();
		3109
		3110	warn "unloading/nuking all extensions";
		3111	for my $pkg (@EXTS) {
1455	warn "unloading <$_>";	3112	warn "... unloading $pkg";
1456	unload_extension $_;	3113
		3114	if (my $cb = $pkg->can ("unload")) {
		3115	eval {
		3116	$cb->($pkg);
		3117	1
		3118	} or warn "$pkg unloaded, but with errors: $@";
1457	}	3119	}
1458		3120
		3121	warn "... nuking $pkg";
		3122	Symbol::delete_package $pkg;
		3123	}
		3124
1459	# unload all modules loaded from $LIBDIR	3125	warn "unloading all perl modules loaded from $LIBDIR";
1460	while (my ($k, $v) = each %INC) {	3126	while (my ($k, $v) = each %INC) {
1461	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3127	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1462		3128
1463	warn "removing <$k>";	3129	warn "... unloading $k";
1464	delete $INC{$k};	3130	delete $INC{$k};
1465		3131
1466	$k =~ s/\.pm$//;	3132	$k =~ s/\.pm$//;
1467	$k =~ s/\//::/g;	3133	$k =~ s/\//::/g;
1468		3134
…		…
1471	}	3137	}
1472		3138
1473	Symbol::delete_package $k;	3139	Symbol::delete_package $k;
1474	}	3140	}
1475		3141
1476	# sync database to disk
1477	cf::db_sync;
1478	IO::AIO::flush;
1479
1480	# get rid of safe::, as good as possible	3142	warn "getting rid of safe::, as good as possible";
1481	Symbol::delete_package "safe::$_"	3143	Symbol::delete_package "safe::$_"
1482	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	3144	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1483		3145
1484	# remove register_script_function callbacks
1485	# TODO
1486
1487	# unload cf.pm "a bit"	3146	warn "unloading cf.pm \"a bit\"";
1488	delete $INC{"cf.pm"};	3147	delete $INC{"cf.pm"};
		3148	delete $INC{"cf/pod.pm"};
1489		3149
1490	# don't, removes xs symbols, too,	3150	# don't, removes xs symbols, too,
1491	# and global variables created in xs	3151	# and global variables created in xs
1492	#Symbol::delete_package __PACKAGE__;	3152	#Symbol::delete_package __PACKAGE__;
1493		3153
1494	# reload cf.pm	3154	warn "unload completed, starting to reload now";
		3155
1495	warn "reloading cf.pm";	3156	warn "reloading cf.pm";
1496	require cf;	3157	require cf;
1497	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3158	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1498		3159
1499	# load config and database again	3160	warn "loading config and database again";
1500	cf::cfg_load;	3161	cf::cfg_load;
1501	cf::db_load;
1502		3162
1503	# load extensions
1504	warn "load extensions";	3163	warn "loading extensions";
1505	cf::load_extensions;	3164	cf::load_extensions;
1506		3165
1507	# reattach attachments to objects	3166	warn "reattaching attachments to objects/players";
1508	warn "reattach";	3167	_global_reattach; # objects, sockets
1509	_global_reattach;	3168	warn "reattaching attachments to maps";
1510	};	3169	reattach $_ for values %MAP;
		3170	warn "reattaching attachments to players";
		3171	reattach $_ for values %PLAYER;
1511		3172
1512	if ($@) {	3173	warn "leaving sync_job";
		3174
		3175	1
		3176	} or do {
1513	warn $@;	3177	warn $@;
1514	warn "error while reloading, exiting.";	3178	warn "error while reloading, exiting.";
1515	exit 1;	3179	exit 1;
1516	}	3180	};
1517		3181
1518	warn "reloaded successfully";	3182	warn "reloaded";
1519	};	3183	};
1520		3184
1521	#############################################################################	3185	our $RELOAD_WATCHER; # used only during reload
1522		3186
1523	unless ($LINK_MAP) {	3187	sub reload_perl() {
1524	$LINK_MAP = cf::map::new;	3188	# doing reload synchronously and two reloads happen back-to-back,
		3189	# coro crashes during coro_state_free->destroy here.
1525		3190
1526	$LINK_MAP->width (41);	3191	$RELOAD_WATCHER ||= Event->timer (
1527	$LINK_MAP->height (41);	3192	reentrant => 0,
1528	$LINK_MAP->alloc;	3193	after => 0,
1529	$LINK_MAP->path ("{link}");	3194	data => WF_AUTOCANCEL,
1530	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";	3195	cb => sub {
1531	$LINK_MAP->in_memory (MAP_IN_MEMORY);	3196	do_reload_perl;
		3197	undef $RELOAD_WATCHER;
		3198	},
		3199	);
1532	}	3200	}
1533		3201
1534	register "<global>", __PACKAGE__;
1535
1536	register_command "perl-reload" => sub {	3202	register_command "reload" => sub {
1537	my ($who, $arg) = @_;	3203	my ($who, $arg) = @_;
1538		3204
1539	if ($who->flag (FLAG_WIZ)) {	3205	if ($who->flag (FLAG_WIZ)) {
1540	$who->message ("start of reload.");
1541	perl_reload;
1542	$who->message ("end of reload.");	3206	$who->message ("reloading server.");
		3207	async { reload_perl };
1543	}	3208	}
1544	};	3209	};
1545		3210
1546	unshift @INC, $LIBDIR;	3211	unshift @INC, $LIBDIR;
1547		3212
		3213	my $bug_warning = 0;
		3214
		3215	our @WAIT_FOR_TICK;
		3216	our @WAIT_FOR_TICK_BEGIN;
		3217
		3218	sub wait_for_tick {
		3219	return unless $TICK_WATCHER->is_active;
		3220	return if $Coro::current == $Coro::main;
		3221
		3222	my $signal = new Coro::Signal;
		3223	push @WAIT_FOR_TICK, $signal;
		3224	$signal->wait;
		3225	}
		3226
		3227	sub wait_for_tick_begin {
		3228	return unless $TICK_WATCHER->is_active;
		3229	return if $Coro::current == $Coro::main;
		3230
		3231	my $signal = new Coro::Signal;
		3232	push @WAIT_FOR_TICK_BEGIN, $signal;
		3233	$signal->wait;
		3234	}
		3235
		3236	my $min = 1e6;#d#
		3237	my $avg = 10;
1548	$TICK_WATCHER = Event->timer (	3238	$TICK_WATCHER = Event->timer (
1549	reentrant => 0,	3239	reentrant => 0,
		3240	parked => 1,
1550	prio => 0,	3241	prio => 0,
1551	at => $NEXT_TICK || $TICK,	3242	at => $NEXT_TICK || $TICK,
1552	data => WF_AUTOCANCEL,	3243	data => WF_AUTOCANCEL,
1553	cb => sub {	3244	cb => sub {
1554	unless ($FREEZE) {	3245	if ($Coro::current != $Coro::main) {
		3246	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3247	unless ++$bug_warning > 10;
		3248	return;
		3249	}
		3250
		3251	$NOW = $tick_start = Event::time;
		3252
1555	cf::server_tick; # one server iteration	3253	cf::server_tick; # one server iteration
1556	$RUNTIME += $TICK;	3254
		3255	0 && sync_job {#d#
		3256	for(1..10) {
		3257	my $t = Event::time;
		3258	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3259	or die;
		3260
		3261	$map->width (50);
		3262	$map->height (50);
		3263	$map->alloc;
		3264	$map->_load_objects ("/tmp/x.map", 1);
		3265	my $t = Event::time - $t;
		3266
		3267	#next unless $t < 0.0013;#d#
		3268	if ($t < $min) {
		3269	$min = $t;
		3270	}
		3271	$avg = $avg * 0.99 + $t * 0.01;
		3272	}
		3273	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3274	exit 0;
		3275	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1557	}	3276	};
1558		3277
		3278	$RUNTIME += $TICK;
1559	$NEXT_TICK += $TICK;	3279	$NEXT_TICK += $TICK;
1560		3280
		3281	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3282	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3283	Coro::async_pool {
		3284	write_runtime
		3285	or warn "ERROR: unable to write runtime file: $!";
		3286	};
		3287	}
		3288
		3289	# my $AFTER = Event::time;
		3290	# warn $AFTER - $NOW;#d#
		3291
		3292	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3293	$sig->send;
		3294	}
		3295	while (my $sig = shift @WAIT_FOR_TICK) {
		3296	$sig->send;
		3297	}
		3298
		3299	$NOW = Event::time;
		3300
1561	# if we are delayed by four ticks or more, skip them all	3301	# if we are delayed by four ticks or more, skip them all
1562	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3302	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1563		3303
1564	$TICK_WATCHER->at ($NEXT_TICK);	3304	$TICK_WATCHER->at ($NEXT_TICK);
1565	$TICK_WATCHER->start;	3305	$TICK_WATCHER->start;
		3306
		3307	$LOAD = ($NOW - $tick_start) / $TICK;
		3308	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3309
		3310	_post_tick;
		3311
		3312
1566	},	3313	},
1567	);	3314	);
1568		3315
		3316	{
1569	IO::AIO::max_poll_time $TICK * 0.2;	3317	BDB::max_poll_time $TICK * 0.1;
1570		3318	$BDB_POLL_WATCHER = Event->io (
1571	Event->io (	3319	reentrant => 0,
1572	fd => IO::AIO::poll_fileno,	3320	fd => BDB::poll_fileno,
1573	poll => 'r',	3321	poll => 'r',
1574	prio => 5,	3322	prio => 0,
1575	data => WF_AUTOCANCEL,
1576	cb => \&IO::AIO::poll_cb,
1577	);
1578
1579	Event->timer (
1580	data => WF_AUTOCANCEL,	3323	data => WF_AUTOCANCEL,
1581	after => 0,	3324	cb => \&BDB::poll_cb,
1582	interval => 10,	3325	);
1583	cb => sub {	3326	BDB::min_parallel 8;
1584	(Coro::unblock_sub {	3327
1585	write_runtime	3328	BDB::set_sync_prepare {
1586	or warn "ERROR: unable to write runtime file: $!";	3329	my $status;
		3330	my $current = $Coro::current;
		3331	(
		3332	sub {
		3333	$status = $!;
		3334	$current->ready; undef $current;
		3335	},
		3336	sub {
		3337	Coro::schedule while defined $current;
		3338	$! = $status;
		3339	},
		3340	)
		3341	};
		3342
		3343	unless ($DB_ENV) {
		3344	$DB_ENV = BDB::db_env_create;
		3345
		3346	cf::sync_job {
		3347	eval {
		3348	BDB::db_env_open
		3349	$DB_ENV,
		3350	$BDBDIR,
		3351	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3352	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3353	0666;
		3354
		3355	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3356
		3357	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3358	$DB_ENV->set_lk_detect;
		3359	};
		3360
		3361	cf::cleanup "db_env_open(db): $@" if $@;
1587	})->();	3362	};
1588	},	3363	}
1589	);	3364	}
		3365
		3366	{
		3367	IO::AIO::min_parallel 8;
		3368
		3369	undef $Coro::AIO::WATCHER;
		3370	IO::AIO::max_poll_time $TICK * 0.1;
		3371	$AIO_POLL_WATCHER = Event->io (
		3372	reentrant => 0,
		3373	data => WF_AUTOCANCEL,
		3374	fd => IO::AIO::poll_fileno,
		3375	poll => 'r',
		3376	prio => 6,
		3377	cb => \&IO::AIO::poll_cb,
		3378	);
		3379	}
		3380
		3381	my $_log_backtrace;
		3382
		3383	sub _log_backtrace {
		3384	my ($msg, @addr) = @_;
		3385
		3386	$msg =~ s/\n//;
		3387
		3388	# limit the # of concurrent backtraces
		3389	if ($_log_backtrace < 2) {
		3390	++$_log_backtrace;
		3391	async {
		3392	my @bt = fork_call {
		3393	@addr = map { sprintf "%x", $_ } @addr;
		3394	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3395	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3396	or die "addr2line: $!";
		3397
		3398	my @funcs;
		3399	my @res = <$fh>;
		3400	chomp for @res;
		3401	while (@res) {
		3402	my ($func, $line) = splice @res, 0, 2, ();
		3403	push @funcs, "[$func] $line";
		3404	}
		3405
		3406	@funcs
		3407	};
		3408
		3409	LOG llevInfo, "[ABT] $msg\n";
		3410	LOG llevInfo, "[ABT] $_\n" for @bt;
		3411	--$_log_backtrace;
		3412	};
		3413	} else {
		3414	LOG llevInfo, "[ABT] $msg\n";
		3415	LOG llevInfo, "[ABT] [suppressed]\n";
		3416	}
		3417	}
		3418
		3419	# load additional modules
		3420	use cf::pod;
		3421
		3422	END { cf::emergency_save }
1590		3423
1591	1	3424	1
1592		3425

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