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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 1.554 by root, Sat Jun 26 22:10:18 2010 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
2		24
3	use utf8;	25	use common::sense;
4	use strict;
5		26
6	use Symbol;	27	use Symbol;
7	use List::Util;	28	use List::Util;
8	use Storable;	29	use Socket;
		30	use EV;
9	use Opcode;	31	use Opcode;
10	use Safe;	32	use Safe;
11	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
12		36
		37	use Guard ();
13	use Coro 3.3;	38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
14	use Coro::Event;	42	use Coro::AnyEvent;
15	use Coro::Timer;	43	use Coro::Timer;
16	use Coro::Signal;	44	use Coro::Signal;
17	use Coro::Semaphore;	45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
18	use Coro::AIO;	48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
19		52
20	use Digest::MD5;	53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
21	use Fcntl;	56	use Fcntl;
22	use IO::AIO 2.31 ();
23	use YAML::Syck ();	57	use YAML::XS ();
		58	use IO::AIO ();
24	use Time::HiRes;	59	use Time::HiRes;
		60	use Compress::LZF;
		61	use Digest::MD5 ();
25		62
26	use Event; $Event::Eval = 1; # no idea why this is required, but it is	63	AnyEvent::detect;
27		64
28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	65	# configure various modules to our taste
29	$YAML::Syck::ImplicitUnicode = 1;	66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
30		69
31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
32		78
33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
34		82
35	our %COMMAND = ();	83	our %COMMAND = ();
36	our %COMMAND_TIME = ();	84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
37	our %EXTCMD = ();	87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
38		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
39	our @EVENT;	93	our @EVENT;
40	our $LIBDIR = datadir . "/ext";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
41		96
42	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
43	our $TICK_WATCHER;	98	our $DATADIR = datadir;
		99	our $LIBDIR = "$DATADIR/ext";
		100	our $PODDIR = "$DATADIR/pod";
		101	our $MAPDIR = "$DATADIR/" . mapdir;
		102	our $LOCALDIR = localdir;
		103	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		104	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		105	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		106	our $RANDOMDIR = "$LOCALDIR/random";
		107	our $BDBDIR = "$LOCALDIR/db";
		108	our $PIDFILE = "$LOCALDIR/pid";
		109	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		110
		111	our %RESOURCE; # unused
		112
		113	our $OUTPUT_RATE_MIN = 3000;
		114	our $OUTPUT_RATE_MAX = 1000000;
		115
		116	our $MAX_LINKS = 32; # how many chained exits to follow
		117	our $VERBOSE_IO = 1;
		118
		119	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		120	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
44	our $NEXT_TICK;	121	our $NEXT_TICK;
45	our $NOW;	122	our $USE_FSYNC = 1; # use fsync to write maps - default on
		123
		124	our $BDB_DEADLOCK_WATCHER;
		125	our $BDB_CHECKPOINT_WATCHER;
		126	our $BDB_TRICKLE_WATCHER;
		127	our $DB_ENV;
		128
		129	our @EXTRA_MODULES = qw(pod match mapscript incloader);
46		130
47	our %CFG;	131	our %CFG;
48		132
49	our $UPTIME; $UPTIME ||= time;	133	our $UPTIME; $UPTIME ||= time;
50	our $RUNTIME;	134	our $RUNTIME;
		135	our $NOW;
51		136
52	our %MAP; # all maps	137	our (%PLAYER, %PLAYER_LOADING); # all users
53	our $LINK_MAP; # the special {link} map	138	our (%MAP, %MAP_LOADING ); # all maps
54	our $FREEZE;	139	our $LINK_MAP; # the special {link} map, which is always available
55	our $RANDOM_MAPS = cf::localdir . "/random";	140
56	our %EXT_CORO;	141	# used to convert map paths into valid unix filenames by replacing / by ∕
		142	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		143
		144	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		145	our $LOADAVG; # same thing, but with alpha-smoothing
		146	our $JITTER; # average jitter
		147	our $TICK_START; # for load detecting purposes
		148
		149	our @POST_INIT;
		150
		151	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		152	our $REALLY_UNLOOP; # never set to true, please :)
57		153
58	binmode STDOUT;	154	binmode STDOUT;
59	binmode STDERR;	155	binmode STDERR;
60		156
61	# read virtual server time, if available	157	# read virtual server time, if available
62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	158	unless ($RUNTIME || !-e $RUNTIMEFILE) {
63	open my $fh, "<", cf::localdir . "/runtime"	159	open my $fh, "<", $RUNTIMEFILE
64	or die "unable to read runtime file: $!";	160	or die "unable to read $RUNTIMEFILE file: $!";
65	$RUNTIME = <$fh> + 0.;	161	$RUNTIME = <$fh> + 0.;
66	}	162	}
67		163
68	mkdir cf::localdir;	164	eval "sub TICK() { $TICK } 1" or die;
69	mkdir cf::localdir . "/" . cf::playerdir;
70	mkdir cf::localdir . "/" . cf::tmpdir;
71	mkdir cf::localdir . "/" . cf::uniquedir;
72	mkdir $RANDOM_MAPS;
73		165
74	# a special map that is always available	166	mkdir $_
75	our $LINK_MAP;	167	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		168
		169	our $EMERGENCY_POSITION;
		170
		171	sub cf::map::normalise;
		172
		173	sub in_main() {
		174	$Coro::current == $Coro::main
		175	}
		176
		177	#############################################################################
		178
		179	%REFLECT = ();
		180	for (@REFLECT) {
		181	my $reflect = JSON::XS::decode_json $_;
		182	$REFLECT{$reflect->{class}} = $reflect;
		183	}
		184
		185	# this is decidedly evil
		186	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
76		187
77	#############################################################################	188	#############################################################################
78		189
79	=head2 GLOBAL VARIABLES	190	=head2 GLOBAL VARIABLES
80		191
…		…
87	=item $cf::RUNTIME	198	=item $cf::RUNTIME
88		199
89	The time this server has run, starts at 0 and is increased by $cf::TICK on	200	The time this server has run, starts at 0 and is increased by $cf::TICK on
90	every server tick.	201	every server tick.
91		202
92	=item $cf::LIBDIR	203	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		204	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		205	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
93		206
94	The perl library directory, where extensions and cf-specific modules can	207	Various directories - "/etc", read-only install directory, perl-library
95	be found. It will be added to C<@INC> automatically.	208	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		209	unique-items directory, player file directory, random maps directory and
		210	database environment.
96		211
97	=item $cf::NOW	212	=item $cf::NOW
98		213
99	The time of the last (current) server tick.	214	The time of the last (current) server tick.
100		215
101	=item $cf::TICK	216	=item $cf::TICK
102		217
103	The interval between server ticks, in seconds.	218	The interval between server ticks, in seconds.
104		219
		220	=item $cf::LOADAVG
		221
		222	The current CPU load on the server (alpha-smoothed), as a value between 0
		223	(none) and 1 (overloaded), indicating how much time is spent on processing
		224	objects per tick. Healthy values are < 0.5.
		225
		226	=item $cf::LOAD
		227
		228	The raw value load value from the last tick.
		229
105	=item %cf::CFG	230	=item %cf::CFG
106		231
107	Configuration for the server, loaded from C</etc/crossfire/config>, or	232	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
108	from wherever your confdir points to.	233	from wherever your confdir points to.
109		234
		235	=item cf::wait_for_tick, cf::wait_for_tick_begin
		236
		237	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		238	returns directly I<after> the tick processing (and consequently, can only wake one thread
		239	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		240
		241	=cut
		242
		243	sub wait_for_tick();
		244	sub wait_for_tick_begin();
		245
		246	=item @cf::INVOKE_RESULTS
		247
		248	This array contains the results of the last C<invoke ()> call. When
		249	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		250	that call.
		251
		252	=item %cf::REFLECT
		253
		254	Contains, for each (C++) class name, a hash reference with information
		255	about object members (methods, scalars, arrays and flags) and other
		256	metadata, which is useful for introspection.
		257
110	=back	258	=back
111		259
112	=cut	260	=cut
113		261
114	BEGIN {	262	sub error(@) { LOG llevError, join "", @_ }
115	*CORE::GLOBAL::warn = sub {	263	sub warn (@) { LOG llevWarn , join "", @_ }
		264	sub info (@) { LOG llevInfo , join "", @_ }
		265	sub debug(@) { LOG llevDebug, join "", @_ }
		266	sub trace(@) { LOG llevTrace, join "", @_ }
		267
		268	$Coro::State::WARNHOOK = sub {
116	my $msg = join "", @_;	269	my $msg = join "", @_;
117	utf8::encode $msg;
118		270
119	$msg .= "\n"	271	$msg .= "\n"
120	unless $msg =~ /\n$/;	272	unless $msg =~ /\n$/;
121		273
122	LOG llevError, "cfperl: $msg";	274	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
123	};	275
124	}	276	LOG llevWarn, $msg;
		277	};
		278
		279	$Coro::State::DIEHOOK = sub {
		280	return unless $^S eq 0; # "eq", not "=="
		281
		282	error Carp::longmess $_[0];
		283
		284	if (in_main) {#d#
		285	error "DIEHOOK called in main context, Coro bug?\n";#d#
		286	return;#d#
		287	}#d#
		288
		289	# kill coroutine otherwise
		290	Coro::terminate
		291	};
125		292
126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	293	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	294	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	295	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	296	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	297	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		298	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	299	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
132		300
133	# we bless all objects into (empty) derived classes to force a method lookup	301	# we bless all objects into (empty) derived classes to force a method lookup
134	# within the Safe compartment.	302	# within the Safe compartment.
135	for my $pkg (qw(	303	for my $pkg (qw(
136	cf::global cf::attachable	304	cf::global cf::attachable
137	cf::object cf::object::player	305	cf::object cf::object::player
138	cf::client cf::player	306	cf::client cf::player
139	cf::arch cf::living	307	cf::arch cf::living
		308	cf::map cf::mapspace
140	cf::map cf::party cf::region	309	cf::party cf::region
141	)) {	310	)) {
142	no strict 'refs';
143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	311	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
144	}	312	}
145		313
146	$Event::DIED = sub {	314	$EV::DIED = sub {
147	warn "error in event callback: @_";	315	Carp::cluck "error in event callback: @_";
148	};	316	};
149		317
150	my %ext_pkg;	318	#############################################################################
151	my @exts;
152	my @hook;
153		319
154	=head2 UTILITY FUNCTIONS	320	=head2 UTILITY FUNCTIONS
155		321
156	=over 4	322	=over 4
157		323
158	=cut	324	=item dumpval $ref
159		325
160	use JSON::Syck (); # TODO# replace by JSON::PC once working	326	=cut
161		327
		328	sub dumpval {
		329	eval {
		330	local $SIG{__DIE__};
		331	my $d;
		332	if (1) {
		333	$d = new Data::Dumper([$_[0]], ["*var"]);
		334	$d->Terse(1);
		335	$d->Indent(2);
		336	$d->Quotekeys(0);
		337	$d->Useqq(1);
		338	#$d->Bless(...);
		339	$d->Seen($_[1]) if @_ > 1;
		340	$d = $d->Dump();
		341	}
		342	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		343	$d
		344	} || "[unable to dump $_[0]: '$@']";
		345	}
		346
162	=item $ref = cf::from_json $json	347	=item $ref = cf::decode_json $json
163		348
164	Converts a JSON string into the corresponding perl data structure.	349	Converts a JSON string into the corresponding perl data structure.
165		350
166	=cut
167
168	sub from_json($) {
169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
170	JSON::Syck::Load $_[0]
171	}
172
173	=item $json = cf::to_json $ref	351	=item $json = cf::encode_json $ref
174		352
175	Converts a perl data structure into its JSON representation.	353	Converts a perl data structure into its JSON representation.
176		354
177	=cut	355	=cut
178		356
179	sub to_json($) {	357	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	358
181	JSON::Syck::Dump $_[0]	359	sub encode_json($) { $json_coder->encode ($_[0]) }
		360	sub decode_json($) { $json_coder->decode ($_[0]) }
		361
		362	=item $ref = cf::yaml_load $scalar
		363
		364	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		365
		366	=cut
		367
		368	sub fork_call(&@);
		369
		370	sub yaml_load($) {
		371	fork_call { YAML::XS::Load $_[0] } @_
182	}	372	}
		373
		374	=item cf::post_init { BLOCK }
		375
		376	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		377	but I<before> the server starts ticking again.
		378
		379	The codeblock will have a single boolean argument to indicate whether this
		380	is a reload or not.
		381
		382	=cut
		383
		384	sub post_init(&) {
		385	push @POST_INIT, shift;
		386	}
		387
		388	sub _post_init {
		389	trace "running post_init jobs";
		390
		391	# run them in parallel...
		392
		393	my @join;
		394
		395	while () {
		396	push @join, map &Coro::async ($_, 0), @POST_INIT;
		397	@POST_INIT = ();
		398
		399	@join or last;
		400
		401	(pop @join)->join;
		402	}
		403	}
		404
		405	=item cf::lock_wait $string
		406
		407	Wait until the given lock is available. See cf::lock_acquire.
		408
		409	=item my $lock = cf::lock_acquire $string
		410
		411	Wait until the given lock is available and then acquires it and returns
		412	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		413	for example when the coroutine gets canceled), the lock is automatically
		414	returned.
		415
		416	Locks are *not* recursive, locking from the same coro twice results in a
		417	deadlocked coro.
		418
		419	Lock names should begin with a unique identifier (for example, cf::map::find
		420	uses map_find and cf::map::load uses map_load).
		421
		422	=item $locked = cf::lock_active $string
		423
		424	Return true if the lock is currently active, i.e. somebody has locked it.
		425
		426	=cut
		427
		428	our $LOCKS = new Coro::SemaphoreSet;
		429
		430	sub lock_wait($) {
		431	$LOCKS->wait ($_[0]);
		432	}
		433
		434	sub lock_acquire($) {
		435	$LOCKS->guard ($_[0])
		436	}
		437
		438	sub lock_active($) {
		439	$LOCKS->count ($_[0]) < 1
		440	}
		441
		442	sub freeze_mainloop {
		443	tick_inhibit_inc;
		444
		445	&Guard::guard (\&tick_inhibit_dec);
		446	}
		447
		448	=item cf::periodic $interval, $cb
		449
		450	Like EV::periodic, but randomly selects a starting point so that the actions
		451	get spread over time.
		452
		453	=cut
		454
		455	sub periodic($$) {
		456	my ($interval, $cb) = @_;
		457
		458	my $start = rand List::Util::min 180, $interval;
		459
		460	EV::periodic $start, $interval, 0, $cb
		461	}
		462
		463	=item cf::get_slot $time[, $priority[, $name]]
		464
		465	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		466	This call blocks and returns only when you have at least C<$time> seconds
		467	of cpu time till the next tick. The slot is only valid till the next cede.
		468
		469	The optional C<$name> can be used to identify the job to run. It might be
		470	used for statistical purposes and should identify the same time-class.
		471
		472	Useful for short background jobs.
		473
		474	=cut
		475
		476	our @SLOT_QUEUE;
		477	our $SLOT_QUEUE;
		478	our $SLOT_DECAY = 0.9;
		479
		480	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		481	$SLOT_QUEUE = Coro::async {
		482	$Coro::current->desc ("timeslot manager");
		483
		484	my $signal = new Coro::Signal;
		485	my $busy;
		486
		487	while () {
		488	next_job:
		489
		490	my $avail = cf::till_tick;
		491
		492	for (0 .. $#SLOT_QUEUE) {
		493	if ($SLOT_QUEUE[$_][0] <= $avail) {
		494	$busy = 0;
		495	my $job = splice @SLOT_QUEUE, $_, 1, ();
		496	$job->[2]->send;
		497	Coro::cede;
		498	goto next_job;
		499	} else {
		500	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		501	}
		502	}
		503
		504	if (@SLOT_QUEUE) {
		505	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		506	push @cf::WAIT_FOR_TICK, $signal;
		507	$signal->wait;
		508	} else {
		509	$busy = 0;
		510	Coro::schedule;
		511	}
		512	}
		513	};
		514
		515	sub get_slot($;$$) {
		516	return if tick_inhibit || $Coro::current == $Coro::main;
		517
		518	my ($time, $pri, $name) = @_;
		519
		520	$time = clamp $time, 0.01, $TICK * .6;
		521
		522	my $sig = new Coro::Signal;
		523
		524	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		525	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		526	$SLOT_QUEUE->ready;
		527	$sig->wait;
		528	}
		529
		530	=item cf::async { BLOCK }
		531
		532	Currently the same as Coro::async_pool, meaning you cannot use
		533	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		534	thing you are allowed to do is call C<prio> on it.
		535
		536	=cut
		537
		538	BEGIN { *async = \&Coro::async_pool }
183		539
184	=item cf::sync_job { BLOCK }	540	=item cf::sync_job { BLOCK }
185		541
186	The design of crossfire+ requires that the main coro ($Coro::main) is	542	The design of Deliantra requires that the main coroutine ($Coro::main)
187	always able to handle events or runnable, as crossfire+ is only partly	543	is always able to handle events or runnable, as Deliantra is only
188	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	544	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		545	acceptable.
189		546
190	If it must be done, put the blocking parts into C<sync_job>. This will run	547	If it must be done, put the blocking parts into C<sync_job>. This will run
191	the given BLOCK in another coroutine while waiting for the result. The	548	the given BLOCK in another coroutine while waiting for the result. The
192	server will be frozen during this time, so the block should either finish	549	server will be frozen during this time, so the block should either finish
193	fast or be very important.	550	fast or be very important.
…		…
195	=cut	552	=cut
196		553
197	sub sync_job(&) {	554	sub sync_job(&) {
198	my ($job) = @_;	555	my ($job) = @_;
199		556
		557	if (in_main) {
		558	my $time = AE::time;
		559
		560	# this is the main coro, too bad, we have to block
		561	# till the operation succeeds, freezing the server :/
		562
		563	#LOG llevError, Carp::longmess "sync job";#d#
		564
		565	my $freeze_guard = freeze_mainloop;
		566
200	my $busy = 1;	567	my $busy = 1;
201	my @res;	568	my @res;
202		569
203	# TODO: use suspend/resume instead	570	(async {
204	local $FREEZE = 1;	571	$Coro::current->desc ("sync job coro");
205
206	my $coro = Coro::async {
207	@res = eval { $job->() };	572	@res = eval { $job->() };
208	warn $@ if $@;	573	error $@ if $@;
209	undef $busy;	574	undef $busy;
210	};
211
212	if ($Coro::current == $Coro::main) {
213	$coro->prio (Coro::PRIO_MAX);	575	})->prio (Coro::PRIO_MAX);
		576
214	while ($busy) {	577	while ($busy) {
		578	if (Coro::nready) {
215	Coro::cede_notself;	579	Coro::cede_notself;
216	Event::one_event unless Coro::nready;	580	} else {
		581	EV::loop EV::LOOP_ONESHOT;
217	}	582	}
		583	}
		584
		585	my $time = AE::time - $time;
		586
		587	$TICK_START += $time; # do not account sync jobs to server load
		588
		589	wantarray ? @res : $res[0]
218	} else {	590	} else {
219	$coro->join;	591	# we are in another coroutine, how wonderful, everything just works
		592
		593	$job->()
220	}	594	}
221
222	wantarray ? @res : $res[0]
223	}	595	}
224		596
225	=item $coro = cf::coro { BLOCK }	597	=item $coro = cf::async_ext { BLOCK }
226		598
227	Creates and returns a new coro. This coro is automcatially being canceled	599	Like async, but this coro is automatically being canceled when the
228	when the extension calling this is being unloaded.	600	extension calling this is being unloaded.
229		601
230	=cut	602	=cut
231		603
232	sub coro(&) {	604	sub async_ext(&) {
233	my $cb = shift;	605	my $cb = shift;
234		606
235	my $coro; $coro = async {	607	my $coro = &Coro::async ($cb);
236	eval {
237	$cb->();
238	};
239	warn $@ if $@;
240	};
241		608
242	$coro->on_destroy (sub {	609	$coro->on_destroy (sub {
243	delete $EXT_CORO{$coro+0};	610	delete $EXT_CORO{$coro+0};
244	});	611	});
245	$EXT_CORO{$coro+0} = $coro;	612	$EXT_CORO{$coro+0} = $coro;
246		613
247	$coro	614	$coro
248	}	615	}
249		616
250	sub write_runtime {	617	=item fork_call { }, @args
251	my $runtime = cf::localdir . "/runtime";
252		618
253	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	619	Executes the given code block with the given arguments in a seperate
254	or return;	620	process, returning the results. Everything must be serialisable with
		621	Coro::Storable. May, of course, block. Note that the executed sub may
		622	never block itself or use any form of event handling.
255		623
256	my $value = $cf::RUNTIME;	624	=cut
257	(aio_write $fh, 0, (length $value), $value, 0) <= 0
258	and return;
259		625
260	aio_fsync $fh	626	sub post_fork {
261	and return;	627	reset_signals;
		628	}
262		629
263	close $fh	630	sub fork_call(&@) {
264	or return;	631	my ($cb, @args) = @_;
265		632
266	aio_rename "$runtime~", $runtime	633	# we seemingly have to make a local copy of the whole thing,
267	and return;	634	# otherwise perl prematurely frees the stuff :/
		635	# TODO: investigate and fix (likely this will be rather laborious)
268		636
		637	my @res = Coro::Util::fork_eval {
		638	cf::post_fork;
		639	&$cb
		640	} @args;
		641
		642	wantarray ? @res : $res[-1]
		643	}
		644
		645	sub objinfo {
269	1	646	(
		647	"counter value" => cf::object::object_count,
		648	"objects created" => cf::object::create_count,
		649	"objects destroyed" => cf::object::destroy_count,
		650	"freelist size" => cf::object::free_count,
		651	"allocated objects" => cf::object::objects_size,
		652	"active objects" => cf::object::actives_size,
		653	)
		654	}
		655
		656	=item $coin = coin_from_name $name
		657
		658	=cut
		659
		660	our %coin_alias = (
		661	"silver" => "silvercoin",
		662	"silvercoin" => "silvercoin",
		663	"silvercoins" => "silvercoin",
		664	"gold" => "goldcoin",
		665	"goldcoin" => "goldcoin",
		666	"goldcoins" => "goldcoin",
		667	"platinum" => "platinacoin",
		668	"platinumcoin" => "platinacoin",
		669	"platinumcoins" => "platinacoin",
		670	"platina" => "platinacoin",
		671	"platinacoin" => "platinacoin",
		672	"platinacoins" => "platinacoin",
		673	"royalty" => "royalty",
		674	"royalties" => "royalty",
		675	);
		676
		677	sub coin_from_name($) {
		678	$coin_alias{$_[0]}
		679	? cf::arch::find $coin_alias{$_[0]}
		680	: undef
		681	}
		682
		683	=item $value = cf::db_get $family => $key
		684
		685	Returns a single value from the environment database.
		686
		687	=item cf::db_put $family => $key => $value
		688
		689	Stores the given C<$value> in the family. It can currently store binary
		690	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		691
		692	=item $db = cf::db_table "name"
		693
		694	Create and/or open a new database table. The string must not be "db" and must be unique
		695	within each server.
		696
		697	=cut
		698
		699	sub db_table($) {
		700	cf::error "db_get called from main context"
		701	if $Coro::current == $Coro::main;
		702
		703	my ($name) = @_;
		704	my $db = BDB::db_create $DB_ENV;
		705
		706	eval {
		707	$db->set_flags (BDB::CHKSUM);
		708
		709	utf8::encode $name;
		710	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		711	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		712	cf::cleanup "db_open(db): $!" if $!;
		713	};
		714	cf::cleanup "db_open(db): $@" if $@;
		715
		716	$db
		717	}
		718
		719	our $DB;
		720
		721	sub db_init {
		722	$DB ||= db_table "db";
		723	}
		724
		725	sub db_get($$) {
		726	my $key = "$_[0]/$_[1]";
		727
		728	cf::error "db_get called from main context"
		729	if $Coro::current == $Coro::main;
		730
		731	BDB::db_get $DB, undef, $key, my $data;
		732
		733	$! ? ()
		734	: $data
		735	}
		736
		737	sub db_put($$$) {
		738	BDB::dbreq_pri 4;
		739	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		740	}
		741
		742	=item cf::cache $id => [$paths...], $processversion => $process
		743
		744	Generic caching function that returns the value of the resource $id,
		745	caching and regenerating as required.
		746
		747	This function can block.
		748
		749	=cut
		750
		751	sub cache {
		752	my ($id, $src, $processversion, $process) = @_;
		753
		754	my $meta =
		755	join "\x00",
		756	$processversion,
		757	map {
		758	aio_stat $_
		759	and Carp::croak "$_: $!";
		760
		761	($_, (stat _)[7,9])
		762	} @$src;
		763
		764	my $dbmeta = db_get cache => "$id/meta";
		765	if ($dbmeta ne $meta) {
		766	# changed, we may need to process
		767
		768	my @data;
		769	my $md5;
		770
		771	for (0 .. $#$src) {
		772	0 <= aio_load $src->[$_], $data[$_]
		773	or Carp::croak "$src->[$_]: $!";
		774	}
		775
		776	# if processing is expensive, check
		777	# checksum first
		778	if (1) {
		779	$md5 =
		780	join "\x00",
		781	$processversion,
		782	map {
		783	cf::cede_to_tick;
		784	($src->[$_], Digest::MD5::md5_hex $data[$_])
		785	} 0.. $#$src;
		786
		787
		788	my $dbmd5 = db_get cache => "$id/md5";
		789	if ($dbmd5 eq $md5) {
		790	db_put cache => "$id/meta", $meta;
		791
		792	return db_get cache => "$id/data";
		793	}
		794	}
		795
		796	my $t1 = Time::HiRes::time;
		797	my $data = $process->(\@data);
		798	my $t2 = Time::HiRes::time;
		799
		800	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		801
		802	db_put cache => "$id/data", $data;
		803	db_put cache => "$id/md5" , $md5;
		804	db_put cache => "$id/meta", $meta;
		805
		806	return $data;
		807	}
		808
		809	db_get cache => "$id/data"
		810	}
		811
		812	=item cf::datalog type => key => value, ...
		813
		814	Log a datalog packet of the given type with the given key-value pairs.
		815
		816	=cut
		817
		818	sub datalog($@) {
		819	my ($type, %kv) = @_;
		820	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
270	}	821	}
271		822
272	=back	823	=back
273		824
274	=cut	825	=cut
275		826
276	#############################################################################	827	#############################################################################
277		828
278	package cf::path;
279
280	sub new {
281	my ($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
384	#############################################################################
385
386	=head2 ATTACHABLE OBJECTS	829	=head2 ATTACHABLE OBJECTS
387		830
388	Many objects in crossfire are so-called attachable objects. That means you can	831	Many objects in deliantra are so-called attachable objects. That means you can
389	attach callbacks/event handlers (a collection of which is called an "attachment")	832	attach callbacks/event handlers (a collection of which is called an "attachment")
390	to it. All such attachable objects support the following methods.	833	to it. All such attachable objects support the following methods.
391		834
392	In the following description, CLASS can be any of C<global>, C<object>	835	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	836	C<player>, C<client> or C<map> (i.e. the attachable objects in
394	crossfire+).	837	Deliantra).
395		838
396	=over 4	839	=over 4
397		840
398	=item $attachable->attach ($attachment, key => $value...)	841	=item $attachable->attach ($attachment, key => $value...)
399		842
…		…
443	=item cf::CLASS::attachment $name, ...	886	=item cf::CLASS::attachment $name, ...
444		887
445	Register an attachment by C<$name> through which attachable objects of the	888	Register an attachment by C<$name> through which attachable objects of the
446	given CLASS can refer to this attachment.	889	given CLASS can refer to this attachment.
447		890
448	Some classes such as crossfire maps and objects can specify attachments	891	Some classes such as deliantra maps and objects can specify attachments
449	that are attached at load/instantiate time, thus the need for a name.	892	that are attached at load/instantiate time, thus the need for a name.
450		893
451	These calls expect any number of the following handler/hook descriptions:	894	These calls expect any number of the following handler/hook descriptions:
452		895
453	=over 4	896	=over 4
…		…
513	our @CB_TYPE = (); # registry for type (cf-object class) based events	956	our @CB_TYPE = (); # registry for type (cf-object class) based events
514	our @CB_MAP = ();	957	our @CB_MAP = ();
515		958
516	my %attachment;	959	my %attachment;
517		960
		961	sub cf::attachable::thawer_merge {
		962	# simply override everything except _meta
		963	local $_[0]{_meta};
		964	%{$_[0]} = %{$_[1]};
		965	}
		966
518	sub _attach_cb($$$$) {	967	sub _attach_cb($$$$) {
519	my ($registry, $event, $prio, $cb) = @_;	968	my ($registry, $event, $prio, $cb) = @_;
520		969
521	use sort 'stable';	970	use sort 'stable';
522		971
…		…
556	$registry = $CB_TYPE[$object_type] ||= [];	1005	$registry = $CB_TYPE[$object_type] ||= [];
557		1006
558	} elsif ($type eq "subtype") {	1007	} elsif ($type eq "subtype") {
559	defined $object_type or Carp::croak "subtype specified without type";	1008	defined $object_type or Carp::croak "subtype specified without type";
560	my $object_subtype = shift @arg;	1009	my $object_subtype = shift @arg;
561	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	1010	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
562		1011
563	} elsif ($type eq "package") {	1012	} elsif ($type eq "package") {
564	my $pkg = shift @arg;	1013	my $pkg = shift @arg;
565		1014
566	while (my ($name, $id) = each %cb_id) {	1015	while (my ($name, $id) = each %cb_id) {
…		…
571		1020
572	} elsif (exists $cb_id{$type}) {	1021	} elsif (exists $cb_id{$type}) {
573	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;	1022	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
574		1023
575	} elsif (ref $type) {	1024	} elsif (ref $type) {
576	warn "attaching objects not supported, ignoring.\n";	1025	error "attaching objects not supported, ignoring.\n";
577		1026
578	} else {	1027	} else {
579	shift @arg;	1028	shift @arg;
580	warn "attach argument '$type' not supported, ignoring.\n";	1029	error "attach argument '$type' not supported, ignoring.\n";
581	}	1030	}
582	}	1031	}
583	}	1032	}
584		1033
585	sub _object_attach {	1034	sub _object_attach {
…		…
595	_attach $registry, $klass, @attach;	1044	_attach $registry, $klass, @attach;
596	}	1045	}
597		1046
598	$obj->{$name} = \%arg;	1047	$obj->{$name} = \%arg;
599	} else {	1048	} else {
600	warn "object uses attachment '$name' that is not available, postponing.\n";	1049	info "object uses attachment '$name' which is not available, postponing.\n";
601	}	1050	}
602		1051
603	$obj->{_attachment}{$name} = undef;	1052	$obj->{_attachment}{$name} = undef;
604	}	1053	}
605		1054
…		…
607	if (ref $_[0]) {	1056	if (ref $_[0]) {
608	_object_attach @_;	1057	_object_attach @_;
609	} else {	1058	} else {
610	_attach shift->_attach_registry, @_;	1059	_attach shift->_attach_registry, @_;
611	}	1060	}
		1061	_recalc_want;
612	};	1062	};
613		1063
614	# all those should be optimised	1064	# all those should be optimised
615	sub cf::attachable::detach {	1065	sub cf::attachable::detach {
616	my ($obj, $name) = @_;	1066	my ($obj, $name) = @_;
…		…
619	delete $obj->{_attachment}{$name};	1069	delete $obj->{_attachment}{$name};
620	reattach ($obj);	1070	reattach ($obj);
621	} else {	1071	} else {
622	Carp::croak "cannot, currently, detach class attachments";	1072	Carp::croak "cannot, currently, detach class attachments";
623	}	1073	}
		1074	_recalc_want;
624	};	1075	};
625		1076
626	sub cf::attachable::attached {	1077	sub cf::attachable::attached {
627	my ($obj, $name) = @_;	1078	my ($obj, $name) = @_;
628		1079
…		…
643	";	1094	";
644	die if $@;	1095	die if $@;
645	}	1096	}
646		1097
647	our $override;	1098	our $override;
648	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1099	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
649		1100
650	sub override {	1101	sub override {
651	$override = 1;	1102	$override = 1;
652	@invoke_results = ();	1103	@INVOKE_RESULTS = (@_);
653	}	1104	}
654		1105
655	sub do_invoke {	1106	sub do_invoke {
656	my $event = shift;	1107	my $event = shift;
657	my $callbacks = shift;	1108	my $callbacks = shift;
658		1109
659	@invoke_results = ();	1110	@INVOKE_RESULTS = ();
660		1111
661	local $override;	1112	local $override;
662		1113
663	for (@$callbacks) {	1114	for (@$callbacks) {
664	eval { &{$_->[1]} };	1115	eval { &{$_->[1]} };
665		1116
666	if ($@) {	1117	if ($@) {
667	warn "$@";
668	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";	1118	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
669	override;	1119	override;
670	}	1120	}
671		1121
672	return 1 if $override;	1122	return 1 if $override;
673	}	1123	}
674		1124
675	0	1125	0
676	}	1126	}
677		1127
678	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1128	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
679		1129
680	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1130	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
681		1131
682	Generate an object-specific event with the given arguments.	1132	Generate an object-specific event with the given arguments.
683		1133
684	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1134	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	1135	removed in future versions), and there is no public API to access override
686	results (if you must, access C<@cf::invoke_results> directly).	1136	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
687		1137
688	=back	1138	=back
689		1139
690	=cut	1140	=cut
691		1141
692	#############################################################################	1142	#############################################################################
693	# object support	1143	# object support
		1144
		1145	sub _object_equal($$);
		1146	sub _object_equal($$) {
		1147	my ($a, $b) = @_;
		1148
		1149	return 0 unless (ref $a) eq (ref $b);
		1150
		1151	if ("HASH" eq ref $a) {
		1152	my @ka = keys %$a;
		1153	my @kb = keys %$b;
		1154
		1155	return 0 if @ka != @kb;
		1156
		1157	for (0 .. $#ka) {
		1158	return 0 unless $ka[$_] eq $kb[$_];
		1159	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1160	}
		1161
		1162	} elsif ("ARRAY" eq ref $a) {
		1163
		1164	return 0 if @$a != @$b;
		1165
		1166	for (0 .. $#$a) {
		1167	return 0 unless _object_equal $a->[$_], $b->[$_];
		1168	}
		1169
		1170	} elsif ($a ne $b) {
		1171	return 0;
		1172	}
		1173
		1174	1
		1175	}
		1176
		1177	our $SLOW_MERGES;#d#
		1178	sub _can_merge {
		1179	my ($ob1, $ob2) = @_;
		1180
		1181	++$SLOW_MERGES;#d#
		1182
		1183	# we do the slow way here
		1184	return _object_equal $ob1, $ob2
		1185	}
694		1186
695	sub reattach {	1187	sub reattach {
696	# basically do the same as instantiate, without calling instantiate	1188	# basically do the same as instantiate, without calling instantiate
697	my ($obj) = @_;	1189	my ($obj) = @_;
		1190
		1191	# no longer needed after getting rid of delete_package?
		1192	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
698		1193
699	my $registry = $obj->registry;	1194	my $registry = $obj->registry;
700		1195
701	@$registry = ();	1196	@$registry = ();
702		1197
…		…
707	for (@$attach) {	1202	for (@$attach) {
708	my ($klass, @attach) = @$_;	1203	my ($klass, @attach) = @$_;
709	_attach $registry, $klass, @attach;	1204	_attach $registry, $klass, @attach;
710	}	1205	}
711	} else {	1206	} else {
712	warn "object uses attachment '$name' that is not available, postponing.\n";	1207	info "object uses attachment '$name' that is not available, postponing.\n";
713	}	1208	}
714	}	1209	}
715	}	1210	}
716		1211
717	cf::attachable->attach (	1212	cf::attachable->attach (
718	prio => -1000000,	1213	prio => -1000000,
719	on_instantiate => sub {	1214	on_instantiate => sub {
720	my ($obj, $data) = @_;	1215	my ($obj, $data) = @_;
721		1216
722	$data = from_json $data;	1217	$data = decode_json $data;
723		1218
724	for (@$data) {	1219	for (@$data) {
725	my ($name, $args) = @$_;	1220	my ($name, $args) = @$_;
726		1221
727	$obj->attach ($name, %{$args || {} });	1222	$obj->attach ($name, %{$args || {} });
…		…
743	sub object_freezer_save {	1238	sub object_freezer_save {
744	my ($filename, $rdata, $objs) = @_;	1239	my ($filename, $rdata, $objs) = @_;
745		1240
746	sync_job {	1241	sync_job {
747	if (length $$rdata) {	1242	if (length $$rdata) {
		1243	utf8::decode (my $decname = $filename);
748	warn sprintf "saving %s (%d,%d)\n",	1244	trace sprintf "saving %s (%d,%d)\n",
749	$filename, length $$rdata, scalar @$objs;	1245	$decname, length $$rdata, scalar @$objs
		1246	if $VERBOSE_IO;
750		1247
751	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	1248	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
752	chmod SAVE_MODE, $fh;	1249	aio_chmod $fh, SAVE_MODE;
753	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	1250	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1251	if ($cf::USE_FSYNC) {
		1252	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
754	aio_fsync $fh;	1253	aio_fsync $fh;
		1254	}
755	close $fh;	1255	aio_close $fh;
756		1256
757	if (@$objs) {	1257	if (@$objs) {
758	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	1258	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
759	chmod SAVE_MODE, $fh;	1259	aio_chmod $fh, SAVE_MODE;
760	my $data = Storable::nfreeze { version => 1, objs => $objs };	1260	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
761	aio_write $fh, 0, (length $data), $data, 0;	1261	aio_write $fh, 0, (length $data), $data, 0;
		1262	if ($cf::USE_FSYNC) {
		1263	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
762	aio_fsync $fh;	1264	aio_fsync $fh;
		1265	}
763	close $fh;	1266	aio_close $fh;
764	aio_rename "$filename.pst~", "$filename.pst";	1267	aio_rename "$filename.pst~", "$filename.pst";
765	}	1268	}
766	} else {	1269	} else {
767	aio_unlink "$filename.pst";	1270	aio_unlink "$filename.pst";
768	}	1271	}
769		1272
770	aio_rename "$filename~", $filename;	1273	aio_rename "$filename~", $filename;
		1274
		1275	$filename =~ s%/[^/]+$%%;
		1276	aio_pathsync $filename if $cf::USE_FSYNC;
771	} else {	1277	} else {
772	warn "FATAL: $filename~: $!\n";	1278	error "unable to save objects: $filename~: $!\n";
773	}	1279	}
774	} else {	1280	} else {
775	aio_unlink $filename;	1281	aio_unlink $filename;
776	aio_unlink "$filename.pst";	1282	aio_unlink "$filename.pst";
777	}	1283	}
778	}	1284	};
779	}	1285	}
780		1286
781	sub object_freezer_as_string {	1287	sub object_freezer_as_string {
782	my ($rdata, $objs) = @_;	1288	my ($rdata, $objs) = @_;
783		1289
…		…
795	or return;	1301	or return;
796		1302
797	unless (aio_stat "$filename.pst") {	1303	unless (aio_stat "$filename.pst") {
798	(aio_load "$filename.pst", $av) >= 0	1304	(aio_load "$filename.pst", $av) >= 0
799	or return;	1305	or return;
		1306
800	$av = eval { (Storable::thaw <$av>)->{objs} };	1307	my $st = eval { Coro::Storable::thaw $av };
		1308	$av = $st->{objs};
801	}	1309	}
802		1310
		1311	utf8::decode (my $decname = $filename);
		1312	trace sprintf "loading %s (%d,%d)\n",
		1313	$decname, length $data, scalar @{$av || []}
		1314	if $VERBOSE_IO;
		1315
803	return ($data, $av);	1316	($data, $av)
804	}	1317	}
		1318
		1319	=head2 COMMAND CALLBACKS
		1320
		1321	=over 4
		1322
		1323	=cut
805		1324
806	#############################################################################	1325	#############################################################################
807	# command handling &c	1326	# command handling &c
808		1327
809	=item cf::register_command $name => \&callback($ob,$args);	1328	=item cf::register_command $name => \&callback($ob,$args);
…		…
822	push @{ $COMMAND{$name} }, [$caller, $cb];	1341	push @{ $COMMAND{$name} }, [$caller, $cb];
823	}	1342	}
824		1343
825	=item cf::register_extcmd $name => \&callback($pl,$packet);	1344	=item cf::register_extcmd $name => \&callback($pl,$packet);
826		1345
827	Register a callbackf ro execution when the client sends an extcmd packet.	1346	Register a callback for execution when the client sends an (synchronous)
		1347	extcmd packet. Ext commands will be processed in the order they are
		1348	received by the server, like other user commands. The first argument is
		1349	the logged-in player. Ext commands can only be processed after a player
		1350	has logged in successfully.
828		1351
829	If the callback returns something, it is sent back as if reply was being	1352	If the callback returns something, it is sent back as if reply was being
830	called.	1353	called.
831		1354
		1355	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1356
		1357	Register a callback for execution when the client sends an (asynchronous)
		1358	exticmd packet. Exti commands are processed by the server as soon as they
		1359	are received, i.e. out of order w.r.t. other commands. The first argument
		1360	is a client socket. Exti commands can be received anytime, even before
		1361	log-in.
		1362
		1363	If the callback returns something, it is sent back as if reply was being
		1364	called.
		1365
832	=cut	1366	=cut
833		1367
834	sub register_extcmd {	1368	sub register_extcmd {
835	my ($name, $cb) = @_;	1369	my ($name, $cb) = @_;
836		1370
837	my $caller = caller;
838	#warn "registering extcmd '$name' to '$caller'";
839
840	$EXTCMD{$name} = [$cb, $caller];	1371	$EXTCMD{$name} = $cb;
841	}	1372	}
		1373
		1374	sub register_exticmd {
		1375	my ($name, $cb) = @_;
		1376
		1377	$EXTICMD{$name} = $cb;
		1378	}
		1379
		1380	use File::Glob ();
842		1381
843	cf::player->attach (	1382	cf::player->attach (
844	on_command => sub {	1383	on_unknown_command => sub {
845	my ($pl, $name, $params) = @_;	1384	my ($pl, $name, $params) = @_;
846		1385
847	my $cb = $COMMAND{$name}	1386	my $cb = $COMMAND{$name}
848	or return;	1387	or return;
849		1388
…		…
854	cf::override;	1393	cf::override;
855	},	1394	},
856	on_extcmd => sub {	1395	on_extcmd => sub {
857	my ($pl, $buf) = @_;	1396	my ($pl, $buf) = @_;
858		1397
859	my $msg = eval { from_json $buf };	1398	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
860		1399
861	if (ref $msg) {	1400	if (ref $msg) {
		1401	my ($type, $reply, @payload) =
		1402	"ARRAY" eq ref $msg
		1403	? @$msg
		1404	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1405
		1406	my @reply;
		1407
862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1408	if (my $cb = $EXTCMD{$type}) {
863	if (my %reply = $cb->[0]->($pl, $msg)) {	1409	@reply = $cb->($pl, @payload);
864	$pl->ext_reply ($msg->{msgid}, %reply);
865	}
866	}	1410	}
		1411
		1412	$pl->ext_reply ($reply, @reply)
		1413	if $reply;
		1414
867	} else {	1415	} else {
868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1416	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
869	}	1417	}
870		1418
871	cf::override;	1419	cf::override;
872	},	1420	},
873	);	1421	);
874		1422
875	sub register {	1423	# "readahead" all extensions
876	my ($base, $pkg) = @_;
877
878	#TODO
879	}
880
881	sub load_extension {	1424	sub cache_extensions {
882	my ($path) = @_;	1425	my $grp = IO::AIO::aio_group;
883		1426
884	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1427	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
885	my $base = $1;	1428	for (grep /\.ext$/, @{$_[0]}) {
886	my $pkg = $1;	1429	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
887	$pkg =~ s/[^[:word:]]/_/g;
888	$pkg = "ext::$pkg";
889
890	warn "loading '$path' into '$pkg'\n";
891
892	open my $fh, "<:utf8", $path
893	or die "$path: $!";
894
895	my $source =
896	"package $pkg; use strict; use utf8;\n"
897	. "#line 1 \"$path\"\n{\n"
898	. (do { local $/; <$fh> })
899	. "\n};\n1";
900
901	eval $source
902	or die $@ ? "$path: $@\n"
903	: "extension disabled.\n";
904
905	push @exts, $pkg;
906	$ext_pkg{$base} = $pkg;
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	# }
924
925	# remove commands
926	for my $name (keys %COMMAND) {
927	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
928
929	if (@cb) {
930	$COMMAND{$name} = \@cb;
931	} else {
932	delete $COMMAND{$name};
933	}	1430	}
934	}	1431	};
935		1432
936	# remove extcmds	1433	$grp
937	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
938	delete $EXTCMD{$name};
939	}
940
941	if (my $cb = $pkg->can ("unload")) {
942	eval {
943	$cb->($pkg);
944	1
945	} or warn "$pkg unloaded, but with errors: $@";
946	}
947
948	Symbol::delete_package $pkg;
949	}	1434	}
950		1435
951	sub load_extensions {	1436	sub load_extensions {
		1437	info "loading extensions...";
		1438
		1439	cf::sync_job {
		1440	my %todo;
		1441
952	for my $ext (<$LIBDIR/*.ext>) {	1442	for my $path (<$LIBDIR/*.ext>) {
953	next unless -r $ext;	1443	next unless -r $path;
954	eval {	1444
955	load_extension $ext;	1445	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1446	my $base = $1;
		1447	my $pkg = $1;
		1448	$pkg =~ s/[^[:word:]]/_/g;
		1449	$pkg = "ext::$pkg";
		1450
		1451	open my $fh, "<:utf8", $path
		1452	or die "$path: $!";
		1453
		1454	my $source = do { local $/; <$fh> };
		1455
		1456	my %ext = (
		1457	path => $path,
		1458	base => $base,
		1459	pkg => $pkg,
		1460	);
		1461
		1462	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1463	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1464
		1465	$ext{source} =
		1466	"package $pkg; use common::sense;\n"
		1467	. "#line 1 \"$path\"\n{\n"
		1468	. $source
		1469	. "\n};\n1";
		1470
		1471	$todo{$base} = \%ext;
		1472	}
		1473
		1474	my $pass = 0;
		1475	my %done;
		1476	while (%todo) {
		1477	my $progress;
		1478
		1479	++$pass;
		1480
		1481	ext:
		1482	while (my ($k, $v) = each %todo) {
		1483	for (split /,\s*/, $v->{meta}{depends}) {
		1484	next ext
		1485	unless exists $done{$_};
		1486	}
		1487
		1488	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1489
		1490	my $active = eval $v->{source};
		1491
		1492	if (length $@) {
		1493	error "$v->{path}: $@\n";
		1494
		1495	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1496	if exists $v->{meta}{mandatory};
		1497
		1498	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1499	delete $todo{$k};
		1500	} else {
		1501	$done{$k} = delete $todo{$k};
		1502	push @EXTS, $v->{pkg};
		1503	$progress = 1;
		1504
		1505	info "$v->{base}: extension inactive.\n"
		1506	unless $active;
		1507	}
956	1	1508	}
957	} or warn "$ext not loaded: $@";	1509
		1510	unless ($progress) {
		1511	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1512
		1513	while (my ($k, $v) = each %todo) {
		1514	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1515	if exists $v->{meta}{mandatory};
		1516	}
		1517	}
		1518	}
958	}	1519	};
959	}	1520	}
960		1521
961	#############################################################################	1522	#############################################################################
962	# load/save/clean perl data associated with a map
963		1523
964	*cf::mapsupport::on_clean = sub {	1524	=back
		1525
		1526	=head2 CORE EXTENSIONS
		1527
		1528	Functions and methods that extend core deliantra objects.
		1529
		1530	=cut
		1531
		1532	package cf::player;
		1533
		1534	use Coro::AIO;
		1535
		1536	=head3 cf::player
		1537
		1538	=over 4
		1539
		1540	=item cf::player::num_playing
		1541
		1542	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1543
		1544	=cut
		1545
		1546	sub num_playing {
		1547	scalar grep
		1548	$_->ob->map
		1549	&& !$_->hidden
		1550	&& !$_->ob->flag (cf::FLAG_WIZ),
		1551	cf::player::list
		1552	}
		1553
		1554	=item cf::player::find $login
		1555
		1556	Returns the given player object, loading it if necessary (might block).
		1557
		1558	=cut
		1559
		1560	sub playerdir($) {
		1561	"$PLAYERDIR/"
		1562	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1563	}
		1564
		1565	sub path($) {
		1566	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1567
		1568	(playerdir $login) . "/playerdata"
		1569	}
		1570
		1571	sub find_active($) {
		1572	$cf::PLAYER{$_[0]}
		1573	and $cf::PLAYER{$_[0]}->active
		1574	and $cf::PLAYER{$_[0]}
		1575	}
		1576
		1577	sub exists($) {
965	my ($map) = @_;	1578	my ($login) = @_;
966		1579
967	my $path = $map->tmpname;	1580	$cf::PLAYER{$login}
968	defined $path or return;	1581	or !aio_stat path $login
969
970	unlink "$path.pst";
971	};
972
973	cf::map->attach (prio => -10000, package => cf::mapsupport::);
974
975	#############################################################################
976	# load/save perl data associated with player->ob objects
977
978	sub all_objects(@) {
979	@_, map all_objects ($_->inv), @_
980	}	1582	}
981		1583
982	# TODO: compatibility cruft, remove when no longer needed	1584	sub find($) {
		1585	return $cf::PLAYER{$_[0]} || do {
		1586	my $login = $_[0];
		1587
		1588	my $guard = cf::lock_acquire "user_find:$login";
		1589
		1590	$cf::PLAYER{$_[0]} || do {
		1591	# rename old playerfiles to new ones
		1592	#TODO: remove when no longer required
		1593	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1594	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1595	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1596	aio_unlink +(playerdir $login) . "/$login.pl";
		1597
		1598	my $f = new_from_file cf::object::thawer path $login
		1599	or return;
		1600
		1601	my $pl = cf::player::load_pl $f
		1602	or return;
		1603
		1604	local $cf::PLAYER_LOADING{$login} = $pl;
		1605	$f->resolve_delayed_derefs;
		1606	$cf::PLAYER{$login} = $pl
		1607	}
		1608	}
		1609	}
		1610
983	cf::player->attach (	1611	cf::player->attach (
984	on_load => sub {	1612	on_load => sub {
985	my ($pl, $path) = @_;	1613	my ($pl, $path) = @_;
986		1614
987	for my $o (all_objects $pl->ob) {	1615	# restore slots saved in save, below
988	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1616	my $slots = delete $pl->{_slots};
989	$o->set_ob_key_value ("_perl_data");
990		1617
991	%$o = %{ Storable::thaw pack "H*", $value };	1618	$pl->ob->current_weapon ($slots->[0]);
992	}	1619	$pl->combat_ob ($slots->[1]);
993	}	1620	$pl->ranged_ob ($slots->[2]);
994	},	1621	},
995	);	1622	);
996		1623
997	#############################################################################	1624	sub save($) {
		1625	my ($pl) = @_;
998		1626
999	=head2 CORE EXTENSIONS	1627	return if $pl->{deny_save};
1000		1628
1001	Functions and methods that extend core crossfire objects.	1629	my $path = path $pl;
		1630	my $guard = cf::lock_acquire "user_save:$path";
1002		1631
1003	=head3 cf::player	1632	return if $pl->{deny_save};
		1633
		1634	aio_mkdir playerdir $pl, 0770;
		1635	$pl->{last_save} = $cf::RUNTIME;
		1636
		1637	cf::get_slot 0.01;
		1638
		1639	# save slots, to be restored later
		1640	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1641
		1642	$pl->save_pl ($path);
		1643	cf::cede_to_tick;
		1644	}
		1645
		1646	sub new($) {
		1647	my ($login) = @_;
		1648
		1649	my $self = create;
		1650
		1651	$self->ob->name ($login);
		1652	$self->{deny_save} = 1;
		1653
		1654	$cf::PLAYER{$login} = $self;
		1655
		1656	$self
		1657	}
		1658
		1659	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1660
		1661	=cut
		1662
		1663	sub send_msg {
		1664	my $ns = shift->ns
		1665	or return;
		1666	$ns->send_msg (@_);
		1667	}
		1668
		1669	=item $pl->quit_character
		1670
		1671	Nukes the player without looking back. If logged in, the connection will
		1672	be destroyed. May block for a long time.
		1673
		1674	=cut
		1675
		1676	sub quit_character {
		1677	my ($pl) = @_;
		1678
		1679	my $name = $pl->ob->name;
		1680
		1681	$pl->{deny_save} = 1;
		1682	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1683
		1684	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1685	$pl->deactivate;
		1686
		1687	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1688	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1689	ext::highscore::check ($pl->ob);
		1690
		1691	$pl->ns->destroy if $pl->ns;
		1692
		1693	my $path = playerdir $pl;
		1694	my $temp = "$path~$cf::RUNTIME~deleting~";
		1695	aio_rename $path, $temp;
		1696	delete $cf::PLAYER{$pl->ob->name};
		1697	$pl->destroy;
		1698
		1699	my $prefix = qr<^~\Q$name\E/>;
		1700
		1701	# nuke player maps
		1702	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1703
		1704	IO::AIO::aio_rmtree $temp;
		1705	}
		1706
		1707	=item $pl->kick
		1708
		1709	Kicks a player out of the game. This destroys the connection.
		1710
		1711	=cut
		1712
		1713	sub kick {
		1714	my ($pl, $kicker) = @_;
		1715
		1716	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1717	$pl->killer ("kicked");
		1718	$pl->ns->destroy;
		1719	}
		1720
		1721	=item cf::player::list_logins
		1722
		1723	Returns am arrayref of all valid playernames in the system, can take a
		1724	while and may block, so not sync_job-capable, ever.
		1725
		1726	=cut
		1727
		1728	sub list_logins {
		1729	my $dirs = aio_readdir $PLAYERDIR
		1730	or return [];
		1731
		1732	my @logins;
		1733
		1734	for my $login (@$dirs) {
		1735	my $path = path $login;
		1736
		1737	# a .pst is a dead give-away for a valid player
		1738	# if no pst file found, open and chekc for blocked users
		1739	if (aio_stat "$path.pst") {
		1740	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1741	aio_read $fh, 0, 512, my $buf, 0 or next;
		1742	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1743	}
		1744
		1745	utf8::decode $login;
		1746	push @logins, $login;
		1747	}
		1748
		1749	\@logins
		1750	}
		1751
		1752	=item $player->maps
		1753
		1754	=item cf::player::maps $login
		1755
		1756	Returns an arrayref of map paths that are private for this
		1757	player. May block.
		1758
		1759	=cut
		1760
		1761	sub maps($) {
		1762	my ($pl) = @_;
		1763
		1764	$pl = ref $pl ? $pl->ob->name : $pl;
		1765
		1766	my $files = aio_readdir playerdir $pl
		1767	or return;
		1768
		1769	my @paths;
		1770
		1771	for (@$files) {
		1772	utf8::decode $_;
		1773	next if /\.(?:pl|pst)$/;
		1774	next unless /^$PATH_SEP/o;
		1775
		1776	push @paths, cf::map::normalise "~$pl/$_";
		1777	}
		1778
		1779	\@paths
		1780	}
		1781
		1782	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1783
		1784	Expand deliantra pod fragments into protocol xml.
		1785
		1786	=item $player->ext_reply ($msgid, @msg)
		1787
		1788	Sends an ext reply to the player.
		1789
		1790	=cut
		1791
		1792	sub ext_reply($$@) {
		1793	my ($self, $id, @msg) = @_;
		1794
		1795	$self->ns->ext_reply ($id, @msg)
		1796	}
		1797
		1798	=item $player->ext_msg ($type, @msg)
		1799
		1800	Sends an ext event to the client.
		1801
		1802	=cut
		1803
		1804	sub ext_msg($$@) {
		1805	my ($self, $type, @msg) = @_;
		1806
		1807	$self->ns->ext_msg ($type, @msg);
		1808	}
		1809
		1810	=head3 cf::region
1004		1811
1005	=over 4	1812	=over 4
1006		1813
1007	=item cf::player::exists $login
1008
1009	Returns true when the given account exists.
1010
1011	=cut	1814	=cut
1012		1815
1013	sub cf::player::exists($) {	1816	package cf::region;
1014	cf::player::find $_[0]
1015	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
1016	}
1017		1817
1018	=item $player->ext_reply ($msgid, $msgtype, %msg)	1818	=item cf::region::find_by_path $path
1019		1819
1020	Sends an ext reply to the player.	1820	Tries to decuce the likely region for a map knowing only its path.
1021		1821
1022	=cut	1822	=cut
1023		1823
1024	sub cf::player::ext_reply($$$%) {	1824	sub find_by_path($) {
		1825	my ($path) = @_;
		1826
		1827	$path =~ s/^~[^\/]*//; # skip ~login
		1828
		1829	my ($match, $specificity);
		1830
		1831	for my $region (list) {
		1832	if ($region->{match} && $path =~ $region->{match}) {
		1833	($match, $specificity) = ($region, $region->specificity)
		1834	if $region->specificity > $specificity;
		1835	}
		1836	}
		1837
		1838	$match
		1839	}
		1840
		1841	=back
		1842
		1843	=head3 cf::map
		1844
		1845	=over 4
		1846
		1847	=cut
		1848
		1849	package cf::map;
		1850
		1851	use Fcntl;
		1852	use Coro::AIO;
		1853
		1854	use overload
		1855	'""' => \&as_string,
		1856	fallback => 1;
		1857
		1858	our $MAX_RESET = 3600;
		1859	our $DEFAULT_RESET = 3000;
		1860
		1861	sub generate_random_map {
		1862	my ($self, $rmp) = @_;
		1863
		1864	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1865
		1866	# mit "rum" bekleckern, nicht
		1867	$self->_create_random_map (
		1868	$rmp,
		1869	$rmp->{wall_name}, $rmp->{monsterstyle},
		1870	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1871	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{this_map},
		1872	$rmp->{exit_on_final_map},
		1873	$rmp->{xsize}, $rmp->{ysize},
		1874	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1875	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1876	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1877	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1878	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1879	(cf::region::find $rmp->{region})
		1880	)
		1881	}
		1882
		1883	=item cf::map->register ($regex, $prio)
		1884
		1885	Register a handler for the map path matching the given regex at the
		1886	givne priority (higher is better, built-in handlers have priority 0, the
		1887	default).
		1888
		1889	=cut
		1890
		1891	sub register {
		1892	my (undef, $regex, $prio) = @_;
		1893	my $pkg = caller;
		1894
		1895	push @{"$pkg\::ISA"}, __PACKAGE__;
		1896
		1897	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1898	}
		1899
		1900	# also paths starting with '/'
		1901	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1902
		1903	sub thawer_merge {
1025	my ($self, $id, %msg) = @_;	1904	my ($self, $merge) = @_;
1026		1905
1027	$msg{msgid} = $id;	1906	# we have to keep some variables in memory intact
		1907	local $self->{path};
		1908	local $self->{load_path};
1028		1909
1029	$self->send ("ext " . to_json \%msg);	1910	$self->SUPER::thawer_merge ($merge);
1030	}	1911	}
		1912
		1913	sub normalise {
		1914	my ($path, $base) = @_;
		1915
		1916	$path = "$path"; # make sure it's a string
		1917
		1918	$path =~ s/\.map$//;
		1919
		1920	# map plan:
		1921	#
		1922	# /! non-realised random map exit (special hack!)
		1923	# {... are special paths that are not being touched
		1924	# ?xxx/... are special absolute paths
		1925	# ?random/... random maps
		1926	# /... normal maps
		1927	# ~user/... per-player map of a specific user
		1928
		1929	$path =~ s/$PATH_SEP/\//go;
		1930
		1931	# treat it as relative path if it starts with
		1932	# something that looks reasonable
		1933	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1934	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1935
		1936	$base =~ s{[^/]+/?$}{};
		1937	$path = "$base/$path";
		1938	}
		1939
		1940	for ($path) {
		1941	redo if s{/\.?/}{/};
		1942	redo if s{/[^/]+/\.\./}{/};
		1943	}
		1944
		1945	$path
		1946	}
		1947
		1948	sub new_from_path {
		1949	my (undef, $path, $base) = @_;
		1950
		1951	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1952
		1953	$path = normalise $path, $base;
		1954
		1955	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1956	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1957	my $self = bless cf::map::new, $pkg;
		1958	$self->{path} = $path; $self->path ($path);
		1959	$self->init; # pass $1 etc.
		1960	return $self;
		1961	}
		1962	}
		1963
		1964	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1965	()
		1966	}
		1967
		1968	sub init {
		1969	my ($self) = @_;
		1970
		1971	$self
		1972	}
		1973
		1974	sub as_string {
		1975	my ($self) = @_;
		1976
		1977	"$self->{path}"
		1978	}
		1979
		1980	# the displayed name, this is a one way mapping
		1981	sub visible_name {
		1982	&as_string
		1983	}
		1984
		1985	# the original (read-only) location
		1986	sub load_path {
		1987	my ($self) = @_;
		1988
		1989	"$MAPDIR/$self->{path}.map"
		1990	}
		1991
		1992	# the temporary/swap location
		1993	sub save_path {
		1994	my ($self) = @_;
		1995
		1996	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1997	"$TMPDIR/$path.map"
		1998	}
		1999
		2000	# the unique path, undef == no special unique path
		2001	sub uniq_path {
		2002	my ($self) = @_;
		2003
		2004	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2005	"$UNIQUEDIR/$path"
		2006	}
		2007
		2008	sub decay_objects {
		2009	my ($self) = @_;
		2010
		2011	return if $self->{deny_reset};
		2012
		2013	$self->do_decay_objects;
		2014	}
		2015
		2016	sub unlink_save {
		2017	my ($self) = @_;
		2018
		2019	utf8::encode (my $save = $self->save_path);
		2020	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2021	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2022	}
		2023
		2024	sub load_header_from($) {
		2025	my ($self, $path) = @_;
		2026
		2027	utf8::encode $path;
		2028	my $f = new_from_file cf::object::thawer $path
		2029	or return;
		2030
		2031	$self->_load_header ($f)
		2032	or return;
		2033
		2034	local $MAP_LOADING{$self->{path}} = $self;
		2035	$f->resolve_delayed_derefs;
		2036
		2037	$self->{load_path} = $path;
		2038
		2039	1
		2040	}
		2041
		2042	sub load_header_orig {
		2043	my ($self) = @_;
		2044
		2045	$self->load_header_from ($self->load_path)
		2046	}
		2047
		2048	sub load_header_temp {
		2049	my ($self) = @_;
		2050
		2051	$self->load_header_from ($self->save_path)
		2052	}
		2053
		2054	sub prepare_temp {
		2055	my ($self) = @_;
		2056
		2057	$self->last_access ((delete $self->{last_access})
		2058	|| $cf::RUNTIME); #d#
		2059	# safety
		2060	$self->{instantiate_time} = $cf::RUNTIME
		2061	if $self->{instantiate_time} > $cf::RUNTIME;
		2062	}
		2063
		2064	sub prepare_orig {
		2065	my ($self) = @_;
		2066
		2067	$self->{load_original} = 1;
		2068	$self->{instantiate_time} = $cf::RUNTIME;
		2069	$self->last_access ($cf::RUNTIME);
		2070	$self->instantiate;
		2071	}
		2072
		2073	sub load_header {
		2074	my ($self) = @_;
		2075
		2076	if ($self->load_header_temp) {
		2077	$self->prepare_temp;
		2078	} else {
		2079	$self->load_header_orig
		2080	or return;
		2081	$self->prepare_orig;
		2082	}
		2083
		2084	$self->{deny_reset} = 1
		2085	if $self->no_reset;
		2086
		2087	$self->default_region (cf::region::find_by_path $self->{path})
		2088	unless $self->default_region;
		2089
		2090	1
		2091	}
		2092
		2093	sub find;
		2094	sub find {
		2095	my ($path, $origin) = @_;
		2096
		2097	cf::cede_to_tick;
		2098
		2099	$path = normalise $path, $origin && $origin->path;
		2100
		2101	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2102	my $guard2 = cf::lock_acquire "map_find:$path";
		2103
		2104	$cf::MAP{$path} || do {
		2105	my $map = new_from_path cf::map $path
		2106	or return;
		2107
		2108	$map->{last_save} = $cf::RUNTIME;
		2109
		2110	$map->load_header
		2111	or return;
		2112
		2113	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2114	# doing this can freeze the server in a sync job, obviously
		2115	#$cf::WAIT_FOR_TICK->wait;
		2116	undef $guard2;
		2117	undef $guard1;
		2118	$map->reset;
		2119	return find $path;
		2120	}
		2121
		2122	$cf::MAP{$path} = $map
		2123	}
		2124	}
		2125
		2126	sub pre_load { }
		2127	#sub post_load { } # XS
		2128
		2129	sub load {
		2130	my ($self) = @_;
		2131
		2132	local $self->{deny_reset} = 1; # loading can take a long time
		2133
		2134	my $path = $self->{path};
		2135
		2136	{
		2137	my $guard = cf::lock_acquire "map_data:$path";
		2138
		2139	return unless $self->valid;
		2140	return unless $self->in_memory == cf::MAP_SWAPPED;
		2141
		2142	$self->in_memory (cf::MAP_LOADING);
		2143
		2144	$self->alloc;
		2145
		2146	$self->pre_load;
		2147	cf::cede_to_tick;
		2148
		2149	my $f = new_from_file cf::object::thawer $self->{load_path};
		2150	$f->skip_block;
		2151	$self->_load_objects ($f)
		2152	or return;
		2153
		2154	$self->post_load_original
		2155	if delete $self->{load_original};
		2156
		2157	if (my $uniq = $self->uniq_path) {
		2158	utf8::encode $uniq;
		2159	unless (aio_stat $uniq) {
		2160	if (my $f = new_from_file cf::object::thawer $uniq) {
		2161	$self->clear_unique_items;
		2162	$self->_load_objects ($f);
		2163	$f->resolve_delayed_derefs;
		2164	}
		2165	}
		2166	}
		2167
		2168	$f->resolve_delayed_derefs;
		2169
		2170	cf::cede_to_tick;
		2171	# now do the right thing for maps
		2172	$self->link_multipart_objects;
		2173	$self->difficulty ($self->estimate_difficulty)
		2174	unless $self->difficulty;
		2175	cf::cede_to_tick;
		2176
		2177	unless ($self->{deny_activate}) {
		2178	$self->decay_objects;
		2179	$self->fix_auto_apply;
		2180	$self->update_buttons;
		2181	cf::cede_to_tick;
		2182	$self->activate;
		2183	}
		2184
		2185	$self->{last_save} = $cf::RUNTIME;
		2186	$self->last_access ($cf::RUNTIME);
		2187
		2188	$self->in_memory (cf::MAP_ACTIVE);
		2189	}
		2190
		2191	$self->post_load;
		2192
		2193	1
		2194	}
		2195
		2196	# customize the map for a given player, i.e.
		2197	# return the _real_ map. used by e.g. per-player
		2198	# maps to change the path to ~playername/mappath
		2199	sub customise_for {
		2200	my ($self, $ob) = @_;
		2201
		2202	return find "~" . $ob->name . "/" . $self->{path}
		2203	if $self->per_player;
		2204
		2205	# return find "?party/" . $ob->name . "/" . $self->{path}
		2206	# if $self->per_party;
		2207
		2208	$self
		2209	}
		2210
		2211	# find and load all maps in the 3x3 area around a map
		2212	sub load_neighbours {
		2213	my ($map) = @_;
		2214
		2215	my @neigh; # diagonal neighbours
		2216
		2217	for (0 .. 3) {
		2218	my $neigh = $map->tile_path ($_)
		2219	or next;
		2220	$neigh = find $neigh, $map
		2221	or next;
		2222	$neigh->load;
		2223
		2224	# now find the diagonal neighbours
		2225	push @neigh,
		2226	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2227	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2228	}
		2229
		2230	for (grep defined $_->[0], @neigh) {
		2231	my ($path, $origin) = @$_;
		2232	my $neigh = find $path, $origin
		2233	or next;
		2234	$neigh->load;
		2235	}
		2236	}
		2237
		2238	sub find_sync {
		2239	my ($path, $origin) = @_;
		2240
		2241	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2242	if $Coro::current == $Coro::main;
		2243
		2244	find $path, $origin
		2245	}
		2246
		2247	sub do_load_sync {
		2248	my ($map) = @_;
		2249
		2250	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2251	if $Coro::current == $Coro::main;
		2252
		2253	$map->load;
		2254	}
		2255
		2256	our %MAP_PREFETCH;
		2257	our $MAP_PREFETCHER = undef;
		2258
		2259	sub find_async {
		2260	my ($path, $origin, $load) = @_;
		2261
		2262	$path = normalise $path, $origin && $origin->{path};
		2263
		2264	if (my $map = $cf::MAP{$path}) {
		2265	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2266	}
		2267
		2268	$MAP_PREFETCH{$path} |= $load;
		2269
		2270	$MAP_PREFETCHER ||= cf::async {
		2271	$Coro::current->{desc} = "map prefetcher";
		2272
		2273	while (%MAP_PREFETCH) {
		2274	while (my ($k, $v) = each %MAP_PREFETCH) {
		2275	if (my $map = find $k) {
		2276	$map->load if $v;
		2277	}
		2278
		2279	delete $MAP_PREFETCH{$k};
		2280	}
		2281	}
		2282	undef $MAP_PREFETCHER;
		2283	};
		2284	$MAP_PREFETCHER->prio (6);
		2285
		2286	()
		2287	}
		2288
		2289	# common code, used by both ->save and ->swapout
		2290	sub _save {
		2291	my ($self) = @_;
		2292
		2293	$self->{last_save} = $cf::RUNTIME;
		2294
		2295	return unless $self->dirty;
		2296
		2297	my $save = $self->save_path; utf8::encode $save;
		2298	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2299
		2300	$self->{load_path} = $save;
		2301
		2302	return if $self->{deny_save};
		2303
		2304	local $self->{last_access} = $self->last_access;#d#
		2305
		2306	cf::async {
		2307	$Coro::current->{desc} = "map player save";
		2308	$_->contr->save for $self->players;
		2309	};
		2310
		2311	cf::get_slot 0.02;
		2312
		2313	if ($uniq) {
		2314	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2315	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2316	} else {
		2317	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2318	}
		2319	}
		2320
		2321	sub save {
		2322	my ($self) = @_;
		2323
		2324	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2325
		2326	$self->_save;
		2327	}
		2328
		2329	sub swap_out {
		2330	my ($self) = @_;
		2331
		2332	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2333
		2334	return if $self->in_memory != cf::MAP_ACTIVE;
		2335	return if $self->{deny_save};
		2336	return if $self->players;
		2337
		2338	# first deactivate the map and "unlink" it from the core
		2339	$self->deactivate;
		2340	$_->clear_links_to ($self) for values %cf::MAP;
		2341	$self->in_memory (cf::MAP_SWAPPED);
		2342
		2343	# then atomically save
		2344	$self->_save;
		2345
		2346	# then free the map
		2347	$self->clear;
		2348	}
		2349
		2350	sub reset_at {
		2351	my ($self) = @_;
		2352
		2353	# TODO: safety, remove and allow resettable per-player maps
		2354	return 1e99 if $self->{deny_reset};
		2355
		2356	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2357	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2358
		2359	$time + $to
		2360	}
		2361
		2362	sub should_reset {
		2363	my ($self) = @_;
		2364
		2365	$self->reset_at <= $cf::RUNTIME
		2366	}
		2367
		2368	sub reset {
		2369	my ($self) = @_;
		2370
		2371	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2372
		2373	return if $self->players;
		2374
		2375	cf::trace "resetting map ", $self->path, "\n";
		2376
		2377	$self->in_memory (cf::MAP_SWAPPED);
		2378
		2379	# need to save uniques path
		2380	unless ($self->{deny_save}) {
		2381	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2382
		2383	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2384	if $uniq;
		2385	}
		2386
		2387	delete $cf::MAP{$self->path};
		2388
		2389	$self->deactivate;
		2390	$_->clear_links_to ($self) for values %cf::MAP;
		2391	$self->clear;
		2392
		2393	$self->unlink_save;
		2394	$self->destroy;
		2395	}
		2396
		2397	my $nuke_counter = "aaaa";
		2398
		2399	sub nuke {
		2400	my ($self) = @_;
		2401
		2402	{
		2403	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2404
		2405	delete $cf::MAP{$self->path};
		2406
		2407	$self->unlink_save;
		2408
		2409	bless $self, "cf::map::wrap";
		2410	delete $self->{deny_reset};
		2411	$self->{deny_save} = 1;
		2412	$self->reset_timeout (1);
		2413	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2414
		2415	$cf::MAP{$self->path} = $self;
		2416	}
		2417
		2418	$self->reset; # polite request, might not happen
		2419	}
		2420
		2421	=item $maps = cf::map::tmp_maps
		2422
		2423	Returns an arrayref with all map paths of currently instantiated and saved
		2424	maps. May block.
		2425
		2426	=cut
		2427
		2428	sub tmp_maps() {
		2429	[
		2430	map {
		2431	utf8::decode $_;
		2432	/\.map$/
		2433	? normalise $_
		2434	: ()
		2435	} @{ aio_readdir $TMPDIR or [] }
		2436	]
		2437	}
		2438
		2439	=item $maps = cf::map::random_maps
		2440
		2441	Returns an arrayref with all map paths of currently instantiated and saved
		2442	random maps. May block.
		2443
		2444	=cut
		2445
		2446	sub random_maps() {
		2447	[
		2448	map {
		2449	utf8::decode $_;
		2450	/\.map$/
		2451	? normalise "?random/$_"
		2452	: ()
		2453	} @{ aio_readdir $RANDOMDIR or [] }
		2454	]
		2455	}
		2456
		2457	=item cf::map::unique_maps
		2458
		2459	Returns an arrayref of paths of all shared maps that have
		2460	instantiated unique items. May block.
		2461
		2462	=cut
		2463
		2464	sub unique_maps() {
		2465	[
		2466	map {
		2467	utf8::decode $_;
		2468	s/\.map$//; # TODO future compatibility hack
		2469	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2470	? ()
		2471	: normalise $_
		2472	} @{ aio_readdir $UNIQUEDIR or [] }
		2473	]
		2474	}
		2475
		2476	=item cf::map::static_maps
		2477
		2478	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2479	file in the shared directory excluding F</styles> and F</editor>). May
		2480	block.
		2481
		2482	=cut
		2483
		2484	sub static_maps() {
		2485	my @dirs = "";
		2486	my @maps;
		2487
		2488	while (@dirs) {
		2489	my $dir = shift @dirs;
		2490
		2491	next if $dir eq "/styles" || $dir eq "/editor";
		2492
		2493	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2494	or return;
		2495
		2496	for (@$files) {
		2497	s/\.map$// or next;
		2498	utf8::decode $_;
		2499	push @maps, "$dir/$_";
		2500	}
		2501
		2502	push @dirs, map "$dir/$_", @$dirs;
		2503	}
		2504
		2505	\@maps
		2506	}
		2507
		2508	=back
		2509
		2510	=head3 cf::object
		2511
		2512	=cut
		2513
		2514	package cf::object;
		2515
		2516	=over 4
		2517
		2518	=item $ob->inv_recursive
		2519
		2520	Returns the inventory of the object I<and> their inventories, recursively,
		2521	but I<not> the object itself.
		2522
		2523	=cut
		2524
		2525	sub inv_recursive_;
		2526	sub inv_recursive_ {
		2527	map { $_, inv_recursive_ $_->inv } @_
		2528	}
		2529
		2530	sub inv_recursive {
		2531	inv_recursive_ inv $_[0]
		2532	}
		2533
		2534	=item $ref = $ob->ref
		2535
		2536	Creates and returns a persistent reference to an object that can be stored as a string.
		2537
		2538	=item $ob = cf::object::deref ($refstring)
		2539
		2540	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2541	even if the object actually exists. May block.
		2542
		2543	=cut
		2544
		2545	sub deref {
		2546	my ($ref) = @_;
		2547
		2548	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2549	my ($uuid, $name) = ($1, $2);
		2550	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2551	or return;
		2552	$pl->ob->uuid eq $uuid
		2553	or return;
		2554
		2555	$pl->ob
		2556	} else {
		2557	warn "$ref: cannot resolve object reference\n";
		2558	undef
		2559	}
		2560	}
		2561
		2562	package cf;
1031		2563
1032	=back	2564	=back
1033		2565
1034	=head3 cf::object::player	2566	=head3 cf::object::player
1035		2567
…		…
1040	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2572	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
1041	can be C<undef>. Does the right thing when the player is currently in a	2573	can be C<undef>. Does the right thing when the player is currently in a
1042	dialogue with the given NPC character.	2574	dialogue with the given NPC character.
1043		2575
1044	=cut	2576	=cut
		2577
		2578	our $SAY_CHANNEL = {
		2579	id => "say",
		2580	title => "Map",
		2581	reply => "say ",
		2582	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2583	};
		2584
		2585	our $CHAT_CHANNEL = {
		2586	id => "chat",
		2587	title => "Chat",
		2588	reply => "chat ",
		2589	tooltip => "Player chat and shouts, global to the server.",
		2590	};
1045		2591
1046	# rough implementation of a future "reply" method that works	2592	# rough implementation of a future "reply" method that works
1047	# with dialog boxes.	2593	# with dialog boxes.
1048	#TODO: the first argument must go, split into a $npc->reply_to ( method	2594	#TODO: the first argument must go, split into a $npc->reply_to ( method
1049	sub cf::object::player::reply($$$;$) {	2595	sub cf::object::player::reply($$$;$) {
…		…
1051		2597
1052	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2598	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1053		2599
1054	if ($self->{record_replies}) {	2600	if ($self->{record_replies}) {
1055	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2601	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2602
1056	} else {	2603	} else {
		2604	my $pl = $self->contr;
		2605
		2606	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2607	my $dialog = $pl->{npc_dialog};
		2608	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2609
		2610	} else {
1057	$msg = $npc->name . " says: $msg" if $npc;	2611	$msg = $npc->name . " says: $msg" if $npc;
1058	$self->message ($msg, $flags);	2612	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2613	}
1059	}	2614	}
		2615	}
		2616
		2617	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2618
		2619	=cut
		2620
		2621	sub cf::object::send_msg {
		2622	my $pl = shift->contr
		2623	or return;
		2624	$pl->send_msg (@_);
1060	}	2625	}
1061		2626
1062	=item $player_object->may ("access")	2627	=item $player_object->may ("access")
1063		2628
1064	Returns wether the given player is authorized to access resource "access"	2629	Returns wether the given player is authorized to access resource "access"
…		…
1073	(ref $cf::CFG{"may_$access"}	2638	(ref $cf::CFG{"may_$access"}
1074	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2639	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1075	: $cf::CFG{"may_$access"})	2640	: $cf::CFG{"may_$access"})
1076	}	2641	}
1077		2642
		2643	=item $player_object->enter_link
		2644
		2645	Freezes the player and moves him/her to a special map (C<{link}>).
		2646
		2647	The player should be reasonably safe there for short amounts of time (e.g.
		2648	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2649	though, as the player cannot control the character while it is on the link
		2650	map.
		2651
		2652	Will never block.
		2653
		2654	=item $player_object->leave_link ($map, $x, $y)
		2655
		2656	Moves the player out of the special C<{link}> map onto the specified
		2657	map. If the map is not valid (or omitted), the player will be moved back
		2658	to the location he/she was before the call to C<enter_link>, or, if that
		2659	fails, to the emergency map position.
		2660
		2661	Might block.
		2662
		2663	=cut
		2664
		2665	sub link_map {
		2666	unless ($LINK_MAP) {
		2667	$LINK_MAP = cf::map::find "{link}"
		2668	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2669	$LINK_MAP->load;
		2670	}
		2671
		2672	$LINK_MAP
		2673	}
		2674
		2675	sub cf::object::player::enter_link {
		2676	my ($self) = @_;
		2677
		2678	$self->deactivate_recursive;
		2679
		2680	++$self->{_link_recursion};
		2681
		2682	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2683
		2684	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2685	if $self->map && $self->map->{path} ne "{link}";
		2686
		2687	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2688	}
		2689
		2690	sub cf::object::player::leave_link {
		2691	my ($self, $map, $x, $y) = @_;
		2692
		2693	return unless $self->contr->active;
		2694
		2695	my $link_pos = delete $self->{_link_pos};
		2696
		2697	unless ($map) {
		2698	# restore original map position
		2699	($map, $x, $y) = @{ $link_pos || [] };
		2700	$map = cf::map::find $map;
		2701
		2702	unless ($map) {
		2703	($map, $x, $y) = @$EMERGENCY_POSITION;
		2704	$map = cf::map::find $map
		2705	or die "FATAL: cannot load emergency map\n";
		2706	}
		2707	}
		2708
		2709	($x, $y) = (-1, -1)
		2710	unless (defined $x) && (defined $y);
		2711
		2712	# use -1 or undef as default coordinates, not 0, 0
		2713	($x, $y) = ($map->enter_x, $map->enter_y)
		2714	if $x <= 0 && $y <= 0;
		2715
		2716	$map->load;
		2717	$map->load_neighbours;
		2718
		2719	return unless $self->contr->active;
		2720
		2721	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2722	if ($self->enter_map ($map, $x, $y)) {
		2723	# entering was successful
		2724	delete $self->{_link_recursion};
		2725	# only activate afterwards, to support waiting in hooks
		2726	$self->activate_recursive;
		2727	}
		2728
		2729	}
		2730
		2731	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2732
		2733	Moves the player to the given map-path and coordinates by first freezing
		2734	her, loading and preparing them map, calling the provided $check callback
		2735	that has to return the map if sucecssful, and then unfreezes the player on
		2736	the new (success) or old (failed) map position. In either case, $done will
		2737	be called at the end of this process.
		2738
		2739	Note that $check will be called with a potentially non-loaded map, so if
		2740	it needs a loaded map it has to call C<< ->load >>.
		2741
		2742	=cut
		2743
		2744	our $GOTOGEN;
		2745
		2746	sub cf::object::player::goto {
		2747	my ($self, $path, $x, $y, $check, $done) = @_;
		2748
		2749	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2750	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2751	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2752	($path, $x, $y) = @$EMERGENCY_POSITION;
		2753	}
		2754
		2755	# do generation counting so two concurrent goto's will be executed in-order
		2756	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2757
		2758	$self->enter_link;
		2759
		2760	(async {
		2761	$Coro::current->{desc} = "player::goto $path $x $y";
		2762
		2763	# *tag paths override both path and x|y
		2764	if ($path =~ /^\*(.*)$/) {
		2765	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2766	my $ob = $obs[rand @obs];
		2767
		2768	# see if we actually can go there
		2769	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2770	$ob = $obs[rand @obs];
		2771	} else {
		2772	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2773	}
		2774	# else put us there anyways for now #d#
		2775
		2776	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2777	} else {
		2778	($path, $x, $y) = (undef, undef, undef);
		2779	}
		2780	}
		2781
		2782	my $map = eval {
		2783	my $map = defined $path ? cf::map::find $path : undef;
		2784
		2785	if ($map) {
		2786	$map = $map->customise_for ($self);
		2787	$map = $check->($map, $x, $y, $self) if $check && $map;
		2788	} else {
		2789	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2790	}
		2791
		2792	$map
		2793	};
		2794
		2795	if ($@) {
		2796	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2797	LOG llevError | logBacktrace, Carp::longmess $@;
		2798	}
		2799
		2800	if ($gen == $self->{_goto_generation}) {
		2801	delete $self->{_goto_generation};
		2802	$self->leave_link ($map, $x, $y);
		2803	}
		2804
		2805	$done->($self) if $done;
		2806	})->prio (1);
		2807	}
		2808
		2809	=item $player_object->enter_exit ($exit_object)
		2810
		2811	=cut
		2812
		2813	sub parse_random_map_params {
		2814	my ($spec) = @_;
		2815
		2816	my $rmp = { # defaults
		2817	xsize => (cf::rndm 15, 40),
		2818	ysize => (cf::rndm 15, 40),
		2819	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2820	#layout => string,
		2821	};
		2822
		2823	for (split /\n/, $spec) {
		2824	my ($k, $v) = split /\s+/, $_, 2;
		2825
		2826	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2827	}
		2828
		2829	$rmp
		2830	}
		2831
		2832	sub prepare_random_map {
		2833	my ($exit) = @_;
		2834
		2835	# all this does is basically replace the /! path by
		2836	# a new random map path (?random/...) with a seed
		2837	# that depends on the exit object
		2838
		2839	my $rmp = parse_random_map_params $exit->msg;
		2840
		2841	if ($exit->map) {
		2842	$rmp->{region} = $exit->region->name;
		2843	$rmp->{origin_map} = $exit->map->path;
		2844	$rmp->{origin_x} = $exit->x;
		2845	$rmp->{origin_y} = $exit->y;
		2846
		2847	$exit->map->touch;
		2848	}
		2849
		2850	$rmp->{random_seed} ||= $exit->random_seed;
		2851
		2852	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2853	my $md5 = Digest::MD5::md5_hex $data;
		2854	my $meta = "$RANDOMDIR/$md5.meta";
		2855
		2856	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2857	aio_write $fh, 0, (length $data), $data, 0;
		2858	undef $fh;
		2859	aio_rename "$meta~", $meta;
		2860
		2861	my $slaying = "?random/$md5";
		2862
		2863	if ($exit->valid) {
		2864	$exit->slaying ("?random/$md5");
		2865	$exit->msg (undef);
		2866	}
		2867	}
		2868	}
		2869
		2870	sub cf::object::player::enter_exit {
		2871	my ($self, $exit) = @_;
		2872
		2873	return unless $self->type == cf::PLAYER;
		2874
		2875	$self->enter_link;
		2876
		2877	(async {
		2878	$Coro::current->{desc} = "enter_exit";
		2879
		2880	unless (eval {
		2881	$self->deactivate_recursive; # just to be sure
		2882
		2883	# random map handling
		2884	{
		2885	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2886
		2887	prepare_random_map $exit
		2888	if $exit->slaying eq "/!";
		2889	}
		2890
		2891	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2892	my $x = $exit->stats->hp;
		2893	my $y = $exit->stats->sp;
		2894
		2895	$self->goto ($map, $x, $y);
		2896
		2897	# if exit is damned, update players death & WoR home-position
		2898	$self->contr->savebed ($map, $x, $y)
		2899	if $exit->flag (cf::FLAG_DAMNED);
		2900
		2901	1
		2902	}) {
		2903	$self->message ("Something went wrong deep within the deliantra server. "
		2904	. "I'll try to bring you back to the map you were before. "
		2905	. "Please report this to the dungeon master!",
		2906	cf::NDI_UNIQUE | cf::NDI_RED);
		2907
		2908	error "ERROR in enter_exit: $@";
		2909	$self->leave_link;
		2910	}
		2911	})->prio (1);
		2912	}
		2913
1078	=head3 cf::client	2914	=head3 cf::client
1079		2915
1080	=over 4	2916	=over 4
1081		2917
1082	=item $client->send_drawinfo ($text, $flags)	2918	=item $client->send_drawinfo ($text, $flags)
…		…
1088		2924
1089	sub cf::client::send_drawinfo {	2925	sub cf::client::send_drawinfo {
1090	my ($self, $text, $flags) = @_;	2926	my ($self, $text, $flags) = @_;
1091		2927
1092	utf8::encode $text;	2928	utf8::encode $text;
1093	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2929	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1094	}	2930	}
1095		2931
		2932	=item $client->send_big_packet ($pkt)
		2933
		2934	Like C<send_packet>, but tries to compress large packets, and fragments
		2935	them as required.
		2936
		2937	=cut
		2938
		2939	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2940
		2941	sub cf::client::send_big_packet {
		2942	my ($self, $pkt) = @_;
		2943
		2944	# try lzf for large packets
		2945	$pkt = "lzf " . Compress::LZF::compress $pkt
		2946	if 1024 <= length $pkt and $self->{can_lzf};
		2947
		2948	# split very large packets
		2949	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2950	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2951	$pkt = "frag";
		2952	}
		2953
		2954	$self->send_packet ($pkt);
		2955	}
		2956
		2957	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2958
		2959	Send a drawinfo or msg packet to the client, formatting the msg for the
		2960	client if neccessary. C<$type> should be a string identifying the type of
		2961	the message, with C<log> being the default. If C<$color> is negative, suppress
		2962	the message unless the client supports the msg packet.
		2963
		2964	=cut
		2965
		2966	# non-persistent channels (usually the info channel)
		2967	our %CHANNEL = (
		2968	"c/motd" => {
		2969	id => "infobox",
		2970	title => "MOTD",
		2971	reply => undef,
		2972	tooltip => "The message of the day",
		2973	},
		2974	"c/identify" => {
		2975	id => "infobox",
		2976	title => "Identify",
		2977	reply => undef,
		2978	tooltip => "Items recently identified",
		2979	},
		2980	"c/examine" => {
		2981	id => "infobox",
		2982	title => "Examine",
		2983	reply => undef,
		2984	tooltip => "Signs and other items you examined",
		2985	},
		2986	"c/shopinfo" => {
		2987	id => "infobox",
		2988	title => "Shop Info",
		2989	reply => undef,
		2990	tooltip => "What your bargaining skill tells you about the shop",
		2991	},
		2992	"c/book" => {
		2993	id => "infobox",
		2994	title => "Book",
		2995	reply => undef,
		2996	tooltip => "The contents of a note or book",
		2997	},
		2998	"c/lookat" => {
		2999	id => "infobox",
		3000	title => "Look",
		3001	reply => undef,
		3002	tooltip => "What you saw there",
		3003	},
		3004	"c/who" => {
		3005	id => "infobox",
		3006	title => "Players",
		3007	reply => undef,
		3008	tooltip => "Shows players who are currently online",
		3009	},
		3010	"c/body" => {
		3011	id => "infobox",
		3012	title => "Body Parts",
		3013	reply => undef,
		3014	tooltip => "Shows which body parts you posess and are available",
		3015	},
		3016	"c/statistics" => {
		3017	id => "infobox",
		3018	title => "Statistics",
		3019	reply => undef,
		3020	tooltip => "Shows your primary statistics",
		3021	},
		3022	"c/skills" => {
		3023	id => "infobox",
		3024	title => "Skills",
		3025	reply => undef,
		3026	tooltip => "Shows your experience per skill and item power",
		3027	},
		3028	"c/shopitems" => {
		3029	id => "infobox",
		3030	title => "Shop Items",
		3031	reply => undef,
		3032	tooltip => "Shows the items currently for sale in this shop",
		3033	},
		3034	"c/resistances" => {
		3035	id => "infobox",
		3036	title => "Resistances",
		3037	reply => undef,
		3038	tooltip => "Shows your resistances",
		3039	},
		3040	"c/pets" => {
		3041	id => "infobox",
		3042	title => "Pets",
		3043	reply => undef,
		3044	tooltip => "Shows information abotu your pets/a specific pet",
		3045	},
		3046	"c/perceiveself" => {
		3047	id => "infobox",
		3048	title => "Perceive Self",
		3049	reply => undef,
		3050	tooltip => "You gained detailed knowledge about yourself",
		3051	},
		3052	"c/uptime" => {
		3053	id => "infobox",
		3054	title => "Uptime",
		3055	reply => undef,
		3056	tooltip => "How long the server has been running since last restart",
		3057	},
		3058	"c/mapinfo" => {
		3059	id => "infobox",
		3060	title => "Map Info",
		3061	reply => undef,
		3062	tooltip => "Information related to the maps",
		3063	},
		3064	"c/party" => {
		3065	id => "party",
		3066	title => "Party",
		3067	reply => "gsay ",
		3068	tooltip => "Messages and chat related to your party",
		3069	},
		3070	"c/death" => {
		3071	id => "death",
		3072	title => "Death",
		3073	reply => undef,
		3074	tooltip => "Reason for and more info about your most recent death",
		3075	},
		3076	"c/say" => $SAY_CHANNEL,
		3077	"c/chat" => $CHAT_CHANNEL,
		3078	);
		3079
		3080	sub cf::client::send_msg {
		3081	my ($self, $channel, $msg, $color, @extra) = @_;
		3082
		3083	$msg = $self->pl->expand_cfpod ($msg)
		3084	unless $color & cf::NDI_VERBATIM;
		3085
		3086	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3087
		3088	# check predefined channels, for the benefit of C
		3089	if ($CHANNEL{$channel}) {
		3090	$channel = $CHANNEL{$channel};
		3091
		3092	$self->ext_msg (channel_info => $channel);
		3093	$channel = $channel->{id};
		3094
		3095	} elsif (ref $channel) {
		3096	# send meta info to client, if not yet sent
		3097	unless (exists $self->{channel}{$channel->{id}}) {
		3098	$self->{channel}{$channel->{id}} = $channel;
		3099	$self->ext_msg (channel_info => $channel);
		3100	}
		3101
		3102	$channel = $channel->{id};
		3103	}
		3104
		3105	return unless @extra || length $msg;
		3106
		3107	# default colour, mask it out
		3108	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3109	if $color & cf::NDI_DEF;
		3110
		3111	my $pkt = "msg "
		3112	. $self->{json_coder}->encode (
		3113	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3114	);
		3115
		3116	$self->send_big_packet ($pkt);
		3117	}
		3118
		3119	=item $client->ext_msg ($type, @msg)
		3120
		3121	Sends an ext event to the client.
		3122
		3123	=cut
		3124
		3125	sub cf::client::ext_msg($$@) {
		3126	my ($self, $type, @msg) = @_;
		3127
		3128	if ($self->extcmd == 2) {
		3129	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3130	} elsif ($self->extcmd == 1) { # TODO: remove
		3131	push @msg, msgtype => "event_$type";
		3132	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3133	}
		3134	}
		3135
		3136	=item $client->ext_reply ($msgid, @msg)
		3137
		3138	Sends an ext reply to the client.
		3139
		3140	=cut
		3141
		3142	sub cf::client::ext_reply($$@) {
		3143	my ($self, $id, @msg) = @_;
		3144
		3145	if ($self->extcmd == 2) {
		3146	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3147	} elsif ($self->extcmd == 1) {
		3148	#TODO: version 1, remove
		3149	unshift @msg, msgtype => "reply", msgid => $id;
		3150	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3151	}
		3152	}
1096		3153
1097	=item $success = $client->query ($flags, "text", \&cb)	3154	=item $success = $client->query ($flags, "text", \&cb)
1098		3155
1099	Queues a query to the client, calling the given callback with	3156	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>,	3157	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>.	3158	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1102		3159
1103	Queries can fail, so check the return code. Or don't, as queries will become	3160	Queries can fail, so check the return code. Or don't, as queries will
1104	reliable at some point in the future.	3161	become reliable at some point in the future.
1105		3162
1106	=cut	3163	=cut
1107		3164
1108	sub cf::client::query {	3165	sub cf::client::query {
1109	my ($self, $flags, $text, $cb) = @_;	3166	my ($self, $flags, $text, $cb) = @_;
…		…
1117	utf8::encode $text;	3174	utf8::encode $text;
1118	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3175	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1119		3176
1120	$self->send_packet ($self->{query_queue}[0][0])	3177	$self->send_packet ($self->{query_queue}[0][0])
1121	if @{ $self->{query_queue} } == 1;	3178	if @{ $self->{query_queue} } == 1;
		3179
		3180	1
1122	}	3181	}
1123		3182
1124	cf::client->attach (	3183	cf::client->attach (
		3184	on_connect => sub {
		3185	my ($ns) = @_;
		3186
		3187	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3188	},
1125	on_reply => sub {	3189	on_reply => sub {
1126	my ($ns, $msg) = @_;	3190	my ($ns, $msg) = @_;
1127		3191
1128	# this weird shuffling is so that direct followup queries	3192	# this weird shuffling is so that direct followup queries
1129	# get handled first	3193	# get handled first
1130	my $queue = delete $ns->{query_queue};	3194	my $queue = delete $ns->{query_queue}
		3195	or return; # be conservative, not sure how that can happen, but we saw a crash here
1131		3196
1132	(shift @$queue)->[1]->($msg);	3197	(shift @$queue)->[1]->($msg);
		3198	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
1133		3199
1134	push @{ $ns->{query_queue} }, @$queue;	3200	push @{ $ns->{query_queue} }, @$queue;
1135		3201
1136	if (@{ $ns->{query_queue} } == @$queue) {	3202	if (@{ $ns->{query_queue} } == @$queue) {
1137	if (@$queue) {	3203	if (@$queue) {
…		…
1139	} else {	3205	} else {
1140	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	3206	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
1141	}	3207	}
1142	}	3208	}
1143	},	3209	},
		3210	on_exticmd => sub {
		3211	my ($ns, $buf) = @_;
		3212
		3213	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3214
		3215	if (ref $msg) {
		3216	my ($type, $reply, @payload) =
		3217	"ARRAY" eq ref $msg
		3218	? @$msg
		3219	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3220
		3221	my @reply;
		3222
		3223	if (my $cb = $EXTICMD{$type}) {
		3224	@reply = $cb->($ns, @payload);
		3225	}
		3226
		3227	$ns->ext_reply ($reply, @reply)
		3228	if $reply;
		3229
		3230	} else {
		3231	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3232	}
		3233
		3234	cf::override;
		3235	},
1144	);	3236	);
1145		3237
1146	=item $client->coro (\&cb)	3238	=item $client->async (\&cb)
1147		3239
1148	Create a new coroutine, running the specified callback. The coroutine will	3240	Create a new coroutine, running the specified callback. The coroutine will
1149	be automatically cancelled when the client gets destroyed (e.g. on logout,	3241	be automatically cancelled when the client gets destroyed (e.g. on logout,
1150	or loss of connection).	3242	or loss of connection).
1151		3243
1152	=cut	3244	=cut
1153		3245
1154	sub cf::client::coro {	3246	sub cf::client::async {
1155	my ($self, $cb) = @_;	3247	my ($self, $cb) = @_;
1156		3248
1157	my $coro; $coro = async {	3249	my $coro = &Coro::async ($cb);
1158	eval {
1159	$cb->();
1160	};
1161	warn $@ if $@;
1162	};
1163		3250
1164	$coro->on_destroy (sub {	3251	$coro->on_destroy (sub {
1165	delete $self->{_coro}{$coro+0};	3252	delete $self->{_coro}{$coro+0};
1166	});	3253	});
1167		3254
…		…
1169		3256
1170	$coro	3257	$coro
1171	}	3258	}
1172		3259
1173	cf::client->attach (	3260	cf::client->attach (
1174	on_destroy => sub {	3261	on_client_destroy => sub {
1175	my ($ns) = @_;	3262	my ($ns) = @_;
1176		3263
1177	$_->cancel for values %{ (delete $ns->{_coro}) || {} };	3264	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
1178	},	3265	},
1179	);	3266	);
…		…
1194	our $safe = new Safe "safe";	3281	our $safe = new Safe "safe";
1195	our $safe_hole = new Safe::Hole;	3282	our $safe_hole = new Safe::Hole;
1196		3283
1197	$SIG{FPE} = 'IGNORE';	3284	$SIG{FPE} = 'IGNORE';
1198		3285
1199	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3286	$safe->permit_only (Opcode::opset qw(
		3287	:base_core :base_mem :base_orig :base_math :base_loop
		3288	grepstart grepwhile mapstart mapwhile
		3289	sort time
		3290	));
1200		3291
1201	# here we export the classes and methods available to script code	3292	# here we export the classes and methods available to script code
1202		3293
1203	=pod	3294	=pod
1204		3295
1205	The following fucntions and emthods are available within a safe environment:	3296	The following functions and methods are available within a safe environment:
1206		3297
1207	cf::object contr pay_amount pay_player map	3298	cf::object
		3299	contr pay_amount pay_player map x y force_find force_add destroy
		3300	insert remove name archname title slaying race decrease split
		3301	value
		3302
1208	cf::object::player player	3303	cf::object::player
1209	cf::player peaceful	3304	player
1210	cf::map trigger	3305
		3306	cf::player
		3307	peaceful
		3308
		3309	cf::map
		3310	trigger
1211		3311
1212	=cut	3312	=cut
1213		3313
1214	for (	3314	for (
1215	["cf::object" => qw(contr pay_amount pay_player map)],	3315	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3316	insert remove inv nrof name archname title slaying race
		3317	decrease split destroy change_exp value msg lore send_msg)],
1216	["cf::object::player" => qw(player)],	3318	["cf::object::player" => qw(player)],
1217	["cf::player" => qw(peaceful)],	3319	["cf::player" => qw(peaceful send_msg)],
1218	["cf::map" => qw(trigger)],	3320	["cf::map" => qw(trigger)],
1219	) {	3321	) {
1220	no strict 'refs';
1221	my ($pkg, @funs) = @$_;	3322	my ($pkg, @funs) = @$_;
1222	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3323	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
1223	for @funs;	3324	for @funs;
1224	}	3325	}
1225		3326
…		…
1240		3341
1241	my $qcode = $code;	3342	my $qcode = $code;
1242	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3343	$qcode =~ s/"/‟/g; # not allowed in #line filenames
1243	$qcode =~ s/\n/\\n/g;	3344	$qcode =~ s/\n/\\n/g;
1244		3345
		3346	%vars = (_dummy => 0) unless %vars;
		3347
		3348	my @res;
1245	local $_;	3349	local $_;
1246	local @safe::cf::_safe_eval_args = values %vars;
1247		3350
1248	my $eval =	3351	my $eval =
1249	"do {\n"	3352	"do {\n"
1250	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3353	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
1251	. "#line 0 \"{$qcode}\"\n"	3354	. "#line 0 \"{$qcode}\"\n"
1252	. $code	3355	. $code
1253	. "\n}"	3356	. "\n}"
1254	;	3357	;
1255		3358
		3359	if ($CFG{safe_eval}) {
1256	sub_generation_inc;	3360	sub_generation_inc;
		3361	local @safe::cf::_safe_eval_args = values %vars;
1257	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3362	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
1258	sub_generation_inc;	3363	sub_generation_inc;
		3364	} else {
		3365	local @cf::_safe_eval_args = values %vars;
		3366	@res = wantarray ? eval eval : scalar eval $eval;
		3367	}
1259		3368
1260	if ($@) {	3369	if ($@) {
1261	warn "$@";	3370	warn "$@",
1262	warn "while executing safe code '$code'\n";	3371	"while executing safe code '$code'\n",
1263	warn "with arguments " . (join " ", %vars) . "\n";	3372	"with arguments " . (join " ", %vars) . "\n";
1264	}	3373	}
1265		3374
1266	wantarray ? @res : $res[0]	3375	wantarray ? @res : $res[0]
1267	}	3376	}
1268		3377
…		…
1282	=cut	3391	=cut
1283		3392
1284	sub register_script_function {	3393	sub register_script_function {
1285	my ($fun, $cb) = @_;	3394	my ($fun, $cb) = @_;
1286		3395
1287	no strict 'refs';	3396	$fun = "safe::$fun" if $CFG{safe_eval};
1288	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3397	*$fun = $safe_hole->wrap ($cb);
1289	}	3398	}
1290		3399
1291	=back	3400	=back
1292		3401
1293	=cut	3402	=cut
1294		3403
1295	#############################################################################	3404	#############################################################################
		3405	# the server's init and main functions
1296		3406
1297	=head2 EXTENSION DATABASE SUPPORT	3407	sub load_facedata($) {
		3408	my ($path) = @_;
1298		3409
1299	Crossfire maintains a very simple database for extension use. It can	3410	# HACK to clear player env face cache, we need some signal framework
1300	currently store anything that can be serialised using Storable, which	3411	# for this (global event?)
1301	excludes objects.	3412	%ext::player_env::MUSIC_FACE_CACHE = ();
1302		3413
1303	The parameter C<$family> should best start with the name of the extension	3414	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1304	using it, it should be unique.
1305		3415
1306	=over 4	3416	trace "loading facedata from $path\n";
1307		3417
1308	=item $hashref = cf::db_get $family	3418	0 < aio_load $path, my $facedata
		3419	or die "$path: $!";
1309		3420
1310	Return a hashref for use by the extension C<$family>, which can be	3421	$facedata = Coro::Storable::thaw $facedata;
1311	modified. After modifications, you have to call C<cf::db_dirty> or
1312	C<cf::db_sync>.
1313		3422
1314	=item $value = cf::db_get $family => $key	3423	$facedata->{version} == 2
		3424	or cf::cleanup "$path: version mismatch, cannot proceed.";
1315		3425
1316	Returns a single value from the database	3426	# patch in the exptable
1317		3427	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
1318	=item cf::db_put $family => $hashref	3428	$facedata->{resource}{"res/exp_table"} = {
1319		3429	type => FT_RSRC,
1320	Stores the given family hashref into the database. Updates are delayed, if	3430	data => $exp_table,
1321	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3431	hash => (Digest::MD5::md5 $exp_table),
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	}
1347
1348	my $pid;
1349
1350	sub db_save() {
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	});	3432	};
		3433	cf::cede_to_tick;
1371		3434
1372	sub db_dirty() {
1373	$dirty = 1;
1374	$idle->start;
1375	}	3435	{
		3436	my $faces = $facedata->{faceinfo};
1376		3437
1377	sub db_get($;$) {	3438	while (my ($face, $info) = each %$faces) {
1378	@_ >= 2	3439	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1379	? $DB->{$_[0]}{$_[1]}
1380	: ($DB->{$_[0]} ||= { })
1381	}
1382		3440
1383	sub db_put($$;$) {	3441	cf::face::set_visibility $idx, $info->{visibility};
1384	if (@_ >= 3) {	3442	cf::face::set_magicmap $idx, $info->{magicmap};
1385	$DB->{$_[0]}{$_[1]} = $_[2];	3443	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
1386	} else {	3444	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
1387	$DB->{$_[0]} = $_[1];
1388	}
1389	db_dirty;
1390	}
1391		3445
1392	cf::global->attach (	3446	cf::cede_to_tick;
1393	prio => 10000,
1394	on_cleanup => sub {
1395	db_sync;
1396	},	3447	}
1397	);
1398	}
1399		3448
1400	#############################################################################	3449	while (my ($face, $info) = each %$faces) {
1401	# the server's main()	3450	next unless $info->{smooth};
1402		3451
1403	sub cfg_load {	3452	my $idx = cf::face::find $face
1404	open my $fh, "<:utf8", cf::confdir . "/config"	3453	or next;
1405	or return;
1406		3454
1407	local $/;	3455	if (my $smooth = cf::face::find $info->{smooth}) {
1408	*CFG = YAML::Syck::Load <$fh>;	3456	cf::face::set_smooth $idx, $smooth;
		3457	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3458	} else {
		3459	error "smooth face '$info->{smooth}' not found for face '$face'";
		3460	}
		3461
		3462	cf::cede_to_tick;
		3463	}
		3464	}
		3465
		3466	{
		3467	my $anims = $facedata->{animinfo};
		3468
		3469	while (my ($anim, $info) = each %$anims) {
		3470	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3471	cf::cede_to_tick;
		3472	}
		3473
		3474	cf::anim::invalidate_all; # d'oh
		3475	}
		3476
		3477	{
		3478	my $res = $facedata->{resource};
		3479
		3480	while (my ($name, $info) = each %$res) {
		3481	if (defined $info->{type}) {
		3482	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3483
		3484	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3485	cf::face::set_type $idx, $info->{type};
		3486	} else {
		3487	$RESOURCE{$name} = $info; # unused
		3488	}
		3489
		3490	cf::cede_to_tick;
		3491	}
		3492	}
		3493
		3494	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3495
		3496	1
		3497	}
		3498
		3499	register_exticmd fx_want => sub {
		3500	my ($ns, $want) = @_;
		3501
		3502	while (my ($k, $v) = each %$want) {
		3503	$ns->fx_want ($k, $v);
		3504	}
		3505	};
		3506
		3507	sub load_resource_file($) {
		3508	my $guard = lock_acquire "load_resource_file";
		3509
		3510	my $status = load_resource_file_ $_[0];
		3511	get_slot 0.1, 100;
		3512	cf::arch::commit_load;
		3513
		3514	$status
		3515	}
		3516
		3517	sub reload_regions {
		3518	# HACK to clear player env face cache, we need some signal framework
		3519	# for this (global event?)
		3520	%ext::player_env::MUSIC_FACE_CACHE = ();
		3521
		3522	load_resource_file "$MAPDIR/regions"
		3523	or die "unable to load regions file\n";
		3524
		3525	for (cf::region::list) {
		3526	$_->{match} = qr/$_->{match}/
		3527	if exists $_->{match};
		3528	}
		3529	}
		3530
		3531	sub reload_facedata {
		3532	load_facedata "$DATADIR/facedata"
		3533	or die "unable to load facedata\n";
		3534	}
		3535
		3536	sub reload_archetypes {
		3537	load_resource_file "$DATADIR/archetypes"
		3538	or die "unable to load archetypes\n";
		3539	}
		3540
		3541	sub reload_treasures {
		3542	load_resource_file "$DATADIR/treasures"
		3543	or die "unable to load treasurelists\n";
		3544	}
		3545
		3546	sub reload_sound {
		3547	trace "loading sound config from $DATADIR/sound\n";
		3548
		3549	0 < Coro::AIO::aio_load "$DATADIR/sound", my $data
		3550	or die "$DATADIR/sound $!";
		3551
		3552	my $soundconf = JSON::XS->new->utf8->relaxed->decode ($data);
		3553
		3554	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3555	my $sound = $soundconf->{compat}[$_]
		3556	or next;
		3557
		3558	my $face = cf::face::find "sound/$sound->[1]";
		3559	cf::sound::set $sound->[0] => $face;
		3560	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3561	}
		3562
		3563	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3564	my $face = cf::face::find "sound/$v";
		3565	cf::sound::set $k => $face;
		3566	}
		3567	}
		3568
		3569	sub reload_resources {
		3570	trace "reloading resource files...\n";
		3571
		3572	reload_exp_table;
		3573	reload_materials;
		3574	reload_facedata;
		3575	reload_sound;
		3576	reload_archetypes;
		3577	reload_regions;
		3578	reload_treasures;
		3579
		3580	trace "finished reloading resource files\n";
		3581	}
		3582
		3583	sub reload_config {
		3584	trace "reloading config file...\n";
		3585
		3586	0 < aio_load "$CONFDIR/config", my $config
		3587	or die "$CONFDIR/config: $!";
		3588
		3589	utf8::decode $config;
		3590	*CFG = yaml_load $config;
		3591
		3592	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3593
		3594	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3595	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3596
		3597	if (exists $CFG{mlockall}) {
		3598	eval {
		3599	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3600	and die "WARNING: m(un)lockall failed: $!\n";
		3601	};
		3602	warn $@ if $@;
		3603	}
		3604	}
		3605
		3606	sub pidfile() {
		3607	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3608	or die "$PIDFILE: $!";
		3609	flock $fh, &Fcntl::LOCK_EX
		3610	or die "$PIDFILE: flock: $!";
		3611	$fh
		3612	}
		3613
		3614	# make sure only one server instance is running at any one time
		3615	sub atomic {
		3616	my $fh = pidfile;
		3617
		3618	my $pid = <$fh>;
		3619	kill 9, $pid if $pid > 0;
		3620
		3621	seek $fh, 0, 0;
		3622	print $fh $$;
		3623	}
		3624
		3625	sub main_loop {
		3626	trace "EV::loop starting\n";
		3627	if (1) {
		3628	EV::loop;
		3629	}
		3630	trace "EV::loop returned\n";
		3631	goto &main_loop unless $REALLY_UNLOOP;
1409	}	3632	}
1410		3633
1411	sub main {	3634	sub main {
		3635	cf::init_globals; # initialise logging
		3636
		3637	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3638	LOG llevInfo, "Copyright (C) 2005-2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3639	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3640	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3641
		3642	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3643
1412	# we must not ever block the main coroutine	3644	# we must not ever block the main coroutine
1413	local $Coro::idle = sub {	3645	local $Coro::idle = sub {
1414	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	3646	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
1415	(Coro::unblock_sub {	3647	(async {
1416	Event::one_event;	3648	$Coro::current->{desc} = "IDLE BUG HANDLER";
1417	})->();	3649	EV::loop EV::LOOP_ONESHOT;
		3650	})->prio (Coro::PRIO_MAX);
1418	};	3651	};
1419		3652
1420	cfg_load;	3653	evthread_start IO::AIO::poll_fileno;
1421	db_load;	3654
		3655	cf::sync_job {
		3656	cf::incloader::init ();
		3657
		3658	cf::init_anim;
		3659	cf::init_attackmess;
		3660	cf::init_dynamic;
		3661
		3662	cf::load_settings;
		3663
		3664	reload_resources;
		3665	reload_config;
		3666	db_init;
		3667
		3668	cf::init_uuid;
		3669	cf::init_signals;
		3670	cf::init_skills;
		3671
		3672	cf::init_beforeplay;
		3673
		3674	atomic;
		3675
1422	load_extensions;	3676	load_extensions;
1423	Event::loop;	3677
		3678	utime time, time, $RUNTIMEFILE;
		3679
		3680	# no (long-running) fork's whatsoever before this point(!)
		3681	use POSIX ();
		3682	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3683
		3684	cf::_post_init 0;
		3685	};
		3686
		3687	cf::object::thawer::errors_are_fatal 0;
		3688	info "parse errors in files are no longer fatal from this point on.\n";
		3689
		3690	my $free_main; $free_main = EV::idle sub {
		3691	undef $free_main;
		3692	undef &main; # free gobs of memory :)
		3693	};
		3694
		3695	goto &main_loop;
1424	}	3696	}
1425		3697
1426	#############################################################################	3698	#############################################################################
1427	# initialisation	3699	# initialisation and cleanup
1428		3700
1429	sub perl_reload() {	3701	# install some emergency cleanup handlers
		3702	BEGIN {
		3703	our %SIGWATCHER = ();
		3704	for my $signal (qw(INT HUP TERM)) {
		3705	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3706	cf::cleanup "SIG$signal";
		3707	};
		3708	}
		3709	}
		3710
		3711	sub write_runtime_sync {
		3712	my $t0 = AE::time;
		3713
		3714	# first touch the runtime file to show we are still running:
		3715	# the fsync below can take a very very long time.
		3716
		3717	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3718
		3719	my $guard = cf::lock_acquire "write_runtime";
		3720
		3721	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3722	or return;
		3723
		3724	my $value = $cf::RUNTIME + 90 + 10;
		3725	# 10 is the runtime save interval, for a monotonic clock
		3726	# 60 allows for the watchdog to kill the server.
		3727
		3728	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3729	and return;
		3730
		3731	# always fsync - this file is important
		3732	aio_fsync $fh
		3733	and return;
		3734
		3735	# touch it again to show we are up-to-date
		3736	aio_utime $fh, undef, undef;
		3737
		3738	close $fh
		3739	or return;
		3740
		3741	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3742	and return;
		3743
		3744	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3745
		3746	1
		3747	}
		3748
		3749	our $uuid_lock;
		3750	our $uuid_skip;
		3751
		3752	sub write_uuid_sync($) {
		3753	$uuid_skip ||= $_[0];
		3754
		3755	return if $uuid_lock;
		3756	local $uuid_lock = 1;
		3757
		3758	my $uuid = "$LOCALDIR/uuid";
		3759
		3760	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3761	or return;
		3762
		3763	my $value = uuid_seq uuid_cur;
		3764
		3765	unless ($value) {
		3766	info "cowardly refusing to write zero uuid value!\n";
		3767	return;
		3768	}
		3769
		3770	my $value = uuid_str $value + $uuid_skip;
		3771	$uuid_skip = 0;
		3772
		3773	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3774	and return;
		3775
		3776	# always fsync - this file is important
		3777	aio_fsync $fh
		3778	and return;
		3779
		3780	close $fh
		3781	or return;
		3782
		3783	aio_rename "$uuid~", $uuid
		3784	and return;
		3785
		3786	trace "uuid file written ($value).\n";
		3787
		3788	1
		3789
		3790	}
		3791
		3792	sub write_uuid($$) {
		3793	my ($skip, $sync) = @_;
		3794
		3795	$sync ? write_uuid_sync $skip
		3796	: async { write_uuid_sync $skip };
		3797	}
		3798
		3799	sub emergency_save() {
		3800	my $freeze_guard = cf::freeze_mainloop;
		3801
		3802	info "emergency_perl_save: enter\n";
		3803
		3804	# this is a trade-off: we want to be very quick here, so
		3805	# save all maps without fsync, and later call a global sync
		3806	# (which in turn might be very very slow)
		3807	local $USE_FSYNC = 0;
		3808
		3809	cf::sync_job {
		3810	cf::write_runtime_sync; # external watchdog should not bark
		3811
		3812	# use a peculiar iteration method to avoid tripping on perl
		3813	# refcount bugs in for. also avoids problems with players
		3814	# and maps saved/destroyed asynchronously.
		3815	info "emergency_perl_save: begin player save\n";
		3816	for my $login (keys %cf::PLAYER) {
		3817	my $pl = $cf::PLAYER{$login} or next;
		3818	$pl->valid or next;
		3819	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3820	$pl->save;
		3821	}
		3822	info "emergency_perl_save: end player save\n";
		3823
		3824	cf::write_runtime_sync; # external watchdog should not bark
		3825
		3826	info "emergency_perl_save: begin map save\n";
		3827	for my $path (keys %cf::MAP) {
		3828	my $map = $cf::MAP{$path} or next;
		3829	$map->valid or next;
		3830	$map->save;
		3831	}
		3832	info "emergency_perl_save: end map save\n";
		3833
		3834	cf::write_runtime_sync; # external watchdog should not bark
		3835
		3836	info "emergency_perl_save: begin database checkpoint\n";
		3837	BDB::db_env_txn_checkpoint $DB_ENV;
		3838	info "emergency_perl_save: end database checkpoint\n";
		3839
		3840	info "emergency_perl_save: begin write uuid\n";
		3841	write_uuid_sync 1;
		3842	info "emergency_perl_save: end write uuid\n";
		3843
		3844	cf::write_runtime_sync; # external watchdog should not bark
		3845
		3846	trace "emergency_perl_save: syncing database to disk";
		3847	BDB::db_env_txn_checkpoint $DB_ENV;
		3848
		3849	info "emergency_perl_save: starting sync\n";
		3850	IO::AIO::aio_sync sub {
		3851	info "emergency_perl_save: finished sync\n";
		3852	};
		3853
		3854	cf::write_runtime_sync; # external watchdog should not bark
		3855
		3856	trace "emergency_perl_save: flushing outstanding aio requests";
		3857	while (IO::AIO::nreqs || BDB::nreqs) {
		3858	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3859	}
		3860
		3861	cf::write_runtime_sync; # external watchdog should not bark
		3862	};
		3863
		3864	info "emergency_perl_save: leave\n";
		3865	}
		3866
		3867	sub post_cleanup {
		3868	my ($make_core) = @_;
		3869
		3870	IO::AIO::flush;
		3871
		3872	error Carp::longmess "post_cleanup backtrace"
		3873	if $make_core;
		3874
		3875	my $fh = pidfile;
		3876	unlink $PIDFILE if <$fh> == $$;
		3877	}
		3878
		3879	# a safer delete_package, copied from Symbol
		3880	sub clear_package($) {
		3881	my $pkg = shift;
		3882
		3883	# expand to full symbol table name if needed
		3884	unless ($pkg =~ /^main::.*::$/) {
		3885	$pkg = "main$pkg" if $pkg =~ /^::/;
		3886	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3887	$pkg .= '::' unless $pkg =~ /::$/;
		3888	}
		3889
		3890	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3891	my $stem_symtab = *{$stem}{HASH};
		3892
		3893	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3894	or return;
		3895
		3896	# clear all symbols
		3897	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3898	for my $name (keys %$leaf_symtab) {
		3899	_gv_clear *{"$pkg$name"};
		3900	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3901	}
		3902	}
		3903
		3904	sub do_reload_perl() {
1430	# can/must only be called in main	3905	# can/must only be called in main
		3906	unless (in_main) {
		3907	error "can only reload from main coroutine";
		3908	return;
		3909	}
		3910
		3911	return if $RELOAD++;
		3912
		3913	my $t1 = AE::time;
		3914
		3915	while ($RELOAD) {
		3916	cf::get_slot 0.1, -1, "reload_perl";
		3917	info "perl_reload: reloading...";
		3918
		3919	trace "perl_reload: entering sync_job";
		3920
		3921	cf::sync_job {
		3922	#cf::emergency_save;
		3923
		3924	trace "perl_reload: cancelling all extension coros";
		3925	$_->cancel for values %EXT_CORO;
		3926	%EXT_CORO = ();
		3927
		3928	trace "perl_reload: removing commands";
		3929	%COMMAND = ();
		3930
		3931	trace "perl_reload: removing ext/exti commands";
		3932	%EXTCMD = ();
		3933	%EXTICMD = ();
		3934
		3935	trace "perl_reload: unloading/nuking all extensions";
		3936	for my $pkg (@EXTS) {
		3937	trace "... unloading $pkg";
		3938
		3939	if (my $cb = $pkg->can ("unload")) {
		3940	eval {
		3941	$cb->($pkg);
		3942	1
		3943	} or error "$pkg unloaded, but with errors: $@";
		3944	}
		3945
		3946	trace "... clearing $pkg";
		3947	clear_package $pkg;
		3948	}
		3949
		3950	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3951	while (my ($k, $v) = each %INC) {
		3952	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3953
		3954	trace "... unloading $k";
		3955	delete $INC{$k};
		3956
		3957	$k =~ s/\.pm$//;
		3958	$k =~ s/\//::/g;
		3959
		3960	if (my $cb = $k->can ("unload_module")) {
		3961	$cb->();
		3962	}
		3963
		3964	clear_package $k;
		3965	}
		3966
		3967	trace "perl_reload: getting rid of safe::, as good as possible";
		3968	clear_package "safe::$_"
		3969	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3970
		3971	trace "perl_reload: unloading cf.pm \"a bit\"";
		3972	delete $INC{"cf.pm"};
		3973	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3974
		3975	# don't, removes xs symbols, too,
		3976	# and global variables created in xs
		3977	#clear_package __PACKAGE__;
		3978
		3979	info "perl_reload: unload completed, starting to reload now";
		3980
		3981	trace "perl_reload: reloading cf.pm";
		3982	require cf;
		3983	cf::_connect_to_perl_1;
		3984
		3985	trace "perl_reload: loading config and database again";
		3986	cf::reload_config;
		3987
		3988	trace "perl_reload: loading extensions";
		3989	cf::load_extensions;
		3990
		3991	if ($REATTACH_ON_RELOAD) {
		3992	trace "perl_reload: reattaching attachments to objects/players";
		3993	_global_reattach; # objects, sockets
		3994	trace "perl_reload: reattaching attachments to maps";
		3995	reattach $_ for values %MAP;
		3996	trace "perl_reload: reattaching attachments to players";
		3997	reattach $_ for values %PLAYER;
		3998	}
		3999
		4000	cf::_post_init 1;
		4001
		4002	trace "perl_reload: leaving sync_job";
		4003
		4004	1
		4005	} or do {
		4006	error $@;
		4007	cf::cleanup "perl_reload: error, exiting.";
		4008	};
		4009
		4010	--$RELOAD;
		4011	}
		4012
		4013	$t1 = AE::time - $t1;
		4014	info "perl_reload: completed in ${t1}s\n";
		4015	};
		4016
		4017	our $RELOAD_WATCHER; # used only during reload
		4018
		4019	sub reload_perl() {
		4020	# doing reload synchronously and two reloads happen back-to-back,
		4021	# coro crashes during coro_state_free->destroy here.
		4022
		4023	$RELOAD_WATCHER ||= cf::async {
		4024	Coro::AIO::aio_wait cache_extensions;
		4025
		4026	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4027	do_reload_perl;
		4028	undef $RELOAD_WATCHER;
		4029	};
		4030	};
		4031	}
		4032
		4033	register_command "reload" => sub {
		4034	my ($who, $arg) = @_;
		4035
		4036	if ($who->flag (FLAG_WIZ)) {
		4037	$who->message ("reloading server.");
		4038	async {
		4039	$Coro::current->{desc} = "perl_reload";
		4040	reload_perl;
		4041	};
		4042	}
		4043	};
		4044
		4045	#############################################################################
		4046
		4047	my $bug_warning = 0;
		4048
		4049	our @WAIT_FOR_TICK;
		4050	our @WAIT_FOR_TICK_BEGIN;
		4051
		4052	sub wait_for_tick() {
		4053	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4054
		4055	my $signal = new Coro::Signal;
		4056	push @WAIT_FOR_TICK, $signal;
		4057	$signal->wait;
		4058	}
		4059
		4060	sub wait_for_tick_begin() {
		4061	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4062
		4063	my $signal = new Coro::Signal;
		4064	push @WAIT_FOR_TICK_BEGIN, $signal;
		4065	$signal->wait;
		4066	}
		4067
		4068	sub tick {
1431	if ($Coro::current != $Coro::main) {	4069	if ($Coro::current != $Coro::main) {
1432	warn "can only reload from main coroutine\n";	4070	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4071	unless ++$bug_warning > 10;
1433	return;	4072	return;
1434	}	4073	}
1435		4074
1436	warn "reloading...";	4075	cf::server_tick; # one server iteration
1437		4076
1438	local $FREEZE = 1;	4077	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
1439	cf::emergency_save;
1440		4078
1441	eval {	4079	if ($NOW >= $NEXT_RUNTIME_WRITE) {
1442	# if anything goes wrong in here, we should simply crash as we already saved	4080	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
1443		4081	Coro::async_pool {
1444	# cancel all watchers	4082	$Coro::current->{desc} = "runtime saver";
1445	for (Event::all_watchers) {	4083	write_runtime_sync
1446	$_->cancel if $_->data & WF_AUTOCANCEL;	4084	or error "ERROR: unable to write runtime file: $!";
1447	}	4085	};
		4086	}
1448		4087
1449	# cancel all extension coros	4088	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
1450	$_->cancel for values %EXT_CORO;	4089	$sig->send;
1451	%EXT_CORO = ();	4090	}
		4091	while (my $sig = shift @WAIT_FOR_TICK) {
		4092	$sig->send;
		4093	}
1452		4094
1453	# unload all extensions	4095	$LOAD = ($NOW - $TICK_START) / $TICK;
1454	for (@exts) {	4096	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
1455	warn "unloading <$_>";
1456	unload_extension $_;
1457	}
1458		4097
1459	# unload all modules loaded from $LIBDIR	4098	if (0) {
1460	while (my ($k, $v) = each %INC) {	4099	if ($NEXT_TICK) {
1461	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	4100	my $jitter = $TICK_START - $NEXT_TICK;
		4101	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4102	debug "jitter $JITTER\n";#d#
		4103	}
		4104	}
		4105	}
1462		4106
1463	warn "removing <$k>";	4107	{
1464	delete $INC{$k};	4108	# configure BDB
1465		4109
1466	$k =~ s/\.pm$//;	4110	BDB::min_parallel 16;
1467	$k =~ s/\//::/g;	4111	BDB::max_poll_reqs $TICK * 0.1;
		4112	$AnyEvent::BDB::WATCHER->priority (1);
1468		4113
1469	if (my $cb = $k->can ("unload_module")) {	4114	unless ($DB_ENV) {
1470	$cb->();	4115	$DB_ENV = BDB::db_env_create;
		4116	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4117	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4118	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4119	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4120	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4121
		4122	cf::sync_job {
		4123	eval {
		4124	BDB::db_env_open
		4125	$DB_ENV,
		4126	$BDBDIR,
		4127	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4128	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4129	0666;
		4130
		4131	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1471	}	4132	};
1472		4133
1473	Symbol::delete_package $k;	4134	cf::cleanup "db_env_open(db): $@" if $@;
1474	}	4135	};
		4136	}
1475		4137
1476	# sync database to disk	4138	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1477	cf::db_sync;	4139	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1478	IO::AIO::flush;
1479
1480	# get rid of safe::, as good as possible
1481	Symbol::delete_package "safe::$_"
1482	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1483
1484	# remove register_script_function callbacks
1485	# TODO
1486
1487	# unload cf.pm "a bit"
1488	delete $INC{"cf.pm"};
1489
1490	# don't, removes xs symbols, too,
1491	# and global variables created in xs
1492	#Symbol::delete_package __PACKAGE__;
1493
1494	# reload cf.pm
1495	warn "reloading cf.pm";
1496	require cf;
1497	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1498
1499	# load config and database again
1500	cf::cfg_load;
1501	cf::db_load;
1502
1503	# load extensions
1504	warn "load extensions";
1505	cf::load_extensions;
1506
1507	# reattach attachments to objects
1508	warn "reattach";
1509	_global_reattach;
1510	};	4140	};
1511		4141	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1512	if ($@) {	4142	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1513	warn $@;
1514	warn "error while reloading, exiting.";
1515	exit 1;
1516	}	4143	};
1517		4144	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
1518	warn "reloaded successfully";	4145	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
1519	};
1520
1521	#############################################################################
1522
1523	unless ($LINK_MAP) {
1524	$LINK_MAP = cf::map::new;
1525
1526	$LINK_MAP->width (41);
1527	$LINK_MAP->height (41);
1528	$LINK_MAP->alloc;
1529	$LINK_MAP->path ("{link}");
1530	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
1531	$LINK_MAP->in_memory (MAP_IN_MEMORY);
1532	}
1533
1534	register "<global>", __PACKAGE__;
1535
1536	register_command "perl-reload" => sub {
1537	my ($who, $arg) = @_;
1538
1539	if ($who->flag (FLAG_WIZ)) {
1540	$who->message ("start of reload.");
1541	perl_reload;
1542	$who->message ("end of reload.");
1543	}	4146	};
1544	};	4147	}
1545		4148
1546	unshift @INC, $LIBDIR;	4149	{
		4150	# configure IO::AIO
1547		4151
1548	$TICK_WATCHER = Event->timer (	4152	IO::AIO::min_parallel 8;
1549	reentrant => 0,	4153	IO::AIO::max_poll_time $TICK * 0.1;
1550	prio => 0,	4154	undef $AnyEvent::AIO::WATCHER;
1551	at => $NEXT_TICK || $TICK,	4155	}
1552	data => WF_AUTOCANCEL,	4156
1553	cb => sub {	4157	our $_log_backtrace;
1554	unless ($FREEZE) {	4158	our $_log_backtrace_last;
1555	cf::server_tick; # one server iteration	4159
1556	$RUNTIME += $TICK;	4160	sub _log_backtrace {
		4161	my ($msg, @addr) = @_;
		4162
		4163	$msg =~ s/\n$//;
		4164
		4165	if ($_log_backtrace_last eq $msg) {
		4166	LOG llevInfo, "[ABT] $msg\n";
		4167	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4168	# limit the # of concurrent backtraces
		4169	} elsif ($_log_backtrace < 2) {
		4170	$_log_backtrace_last = $msg;
		4171	++$_log_backtrace;
		4172	my $perl_bt = Carp::longmess $msg;
		4173	async {
		4174	$Coro::current->{desc} = "abt $msg";
		4175
		4176	my @bt = fork_call {
		4177	@addr = map { sprintf "%x", $_ } @addr;
		4178	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4179	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4180	or die "addr2line: $!";
		4181
		4182	my @funcs;
		4183	my @res = <$fh>;
		4184	chomp for @res;
		4185	while (@res) {
		4186	my ($func, $line) = splice @res, 0, 2, ();
		4187	push @funcs, "[$func] $line";
		4188	}
		4189
		4190	@funcs
		4191	};
		4192
		4193	LOG llevInfo, "[ABT] $perl_bt\n";
		4194	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4195	LOG llevInfo, "[ABT] $_\n" for @bt;
		4196	--$_log_backtrace;
1557	}	4197	};
1558		4198	} else {
1559	$NEXT_TICK += $TICK;	4199	LOG llevInfo, "[ABT] $msg\n";
1560		4200	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1561	# if we are delayed by four ticks or more, skip them all
1562	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1563
1564	$TICK_WATCHER->at ($NEXT_TICK);
1565	$TICK_WATCHER->start;
1566	},	4201	}
1567	);	4202	}
1568		4203
1569	IO::AIO::max_poll_time $TICK * 0.2;	4204	# load additional modules
		4205	require "cf/$_.pm" for @EXTRA_MODULES;
		4206	cf::_connect_to_perl_2;
1570		4207
1571	Event->io (	4208	END { cf::emergency_save }
1572	fd => IO::AIO::poll_fileno,
1573	poll => 'r',
1574	prio => 5,
1575	data => WF_AUTOCANCEL,
1576	cb => \&IO::AIO::poll_cb,
1577	);
1578
1579	Event->timer (
1580	data => WF_AUTOCANCEL,
1581	after => 0,
1582	interval => 10,
1583	cb => sub {
1584	(Coro::unblock_sub {
1585	write_runtime
1586	or warn "ERROR: unable to write runtime file: $!";
1587	})->();
1588	},
1589	);
1590		4209
1591	1	4210	1
1592		4211

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