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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.14 by root, Fri Mar 31 22:47:35 2006 UTC vs.
Revision 1.498 by elmex, Tue Jan 5 16:16:37 2010 UTC

1#
2# This file is part of Deliantra, the Roguelike Realtime MMORPG.
3#
4# Copyright (©) 2006,2007,2008 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
1package cf; 23package cf;
24
25use 5.10.0;
26use utf8;
27use strict qw(vars subs);
2 28
3use Symbol; 29use Symbol;
4use List::Util; 30use List::Util;
31use Socket;
32use EV;
33use Opcode;
34use Safe;
35use Safe::Hole;
5use Storable; 36use Storable ();
37use Carp ();
6 38
7use strict; 39use Guard ();
40use Coro ();
41use Coro::State;
42use Coro::Handle;
43use Coro::EV;
44use Coro::AnyEvent;
45use Coro::Timer;
46use Coro::Signal;
47use Coro::Semaphore;
48use Coro::SemaphoreSet;
49use Coro::AnyEvent;
50use Coro::AIO;
51use Coro::BDB 1.6;
52use Coro::Storable;
53use Coro::Util ();
8 54
9our %COMMAND; 55use JSON::XS 2.01 ();
56use BDB ();
57use Data::Dumper;
58use Fcntl;
59use YAML::XS ();
60use IO::AIO ();
61use Time::HiRes;
62use Compress::LZF;
63use Digest::MD5 ();
64
65AnyEvent::detect;
66
67# configure various modules to our taste
68#
69$Storable::canonical = 1; # reduce rsync transfers
70Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
71
72$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
73
74# make sure c-lzf reinitialises itself
75Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
76Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
77
78# strictly for debugging
79$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
80
81sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
82
83our %COMMAND = ();
84our %COMMAND_TIME = ();
85
86our @EXTS = (); # list of extension package names
87our %EXTCMD = ();
88our %EXTICMD = ();
89our %EXT_CORO = (); # coroutines bound to extensions
90our %EXT_MAP = (); # pluggable maps
91
92our $RELOAD; # number of reloads so far, non-zero while in reload
10our @EVENT; 93our @EVENT;
11our %PROP_TYPE; 94our @REFLECT; # set by XS
12our %PROP_IDX; 95our %REFLECT; # set by us
13 96
14BEGIN { 97our $CONFDIR = confdir;
15 @EVENT = map lc, @EVENT; 98our $DATADIR = datadir;
99our $LIBDIR = "$DATADIR/ext";
100our $PODDIR = "$DATADIR/pod";
101our $MAPDIR = "$DATADIR/" . mapdir;
102our $LOCALDIR = localdir;
103our $TMPDIR = "$LOCALDIR/" . tmpdir;
104our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
105our $PLAYERDIR = "$LOCALDIR/" . playerdir;
106our $RANDOMDIR = "$LOCALDIR/random";
107our $BDBDIR = "$LOCALDIR/db";
108our $PIDFILE = "$LOCALDIR/pid";
109our $RUNTIMEFILE = "$LOCALDIR/runtime";
16 110
17 *CORE::GLOBAL::warn = sub { 111our %RESOURCE;
112
113our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
114our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
115our $NEXT_TICK;
116our $USE_FSYNC = 1; # use fsync to write maps - default on
117
118our $BDB_DEADLOCK_WATCHER;
119our $BDB_CHECKPOINT_WATCHER;
120our $BDB_TRICKLE_WATCHER;
121our $DB_ENV;
122
123our @EXTRA_MODULES = qw(pod match mapscript);
124
125our %CFG;
126
127our $UPTIME; $UPTIME ||= time;
128our $RUNTIME;
129our $NOW;
130
131our (%PLAYER, %PLAYER_LOADING); # all users
132our (%MAP, %MAP_LOADING ); # all maps
133our $LINK_MAP; # the special {link} map, which is always available
134
135# used to convert map paths into valid unix filenames by replacing / by ∕
136our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
137
138our $LOAD; # a number between 0 (idle) and 1 (too many objects)
139our $LOADAVG; # same thing, but with alpha-smoothing
140our $JITTER; # average jitter
141our $TICK_START; # for load detecting purposes
142
143our @POST_INIT;
144
145our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
146our $REALLY_UNLOOP; # never set to true, please :)
147
148binmode STDOUT;
149binmode STDERR;
150
151# read virtual server time, if available
152unless ($RUNTIME || !-e $RUNTIMEFILE) {
153 open my $fh, "<", $RUNTIMEFILE
154 or die "unable to read $RUNTIMEFILE file: $!";
155 $RUNTIME = <$fh> + 0.;
156}
157
158eval "sub TICK() { $TICK } 1" or die;
159
160mkdir $_
161 for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
162
163our $EMERGENCY_POSITION;
164
165sub cf::map::normalise;
166
167#############################################################################
168
169%REFLECT = ();
170for (@REFLECT) {
171 my $reflect = JSON::XS::decode_json $_;
172 $REFLECT{$reflect->{class}} = $reflect;
173}
174
175# this is decidedly evil
176$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
177
178#############################################################################
179
180=head2 GLOBAL VARIABLES
181
182=over 4
183
184=item $cf::UPTIME
185
186The timestamp of the server start (so not actually an uptime).
187
188=item $cf::RUNTIME
189
190The time this server has run, starts at 0 and is increased by $cf::TICK on
191every server tick.
192
193=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
194$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
195$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
196
197Various directories - "/etc", read-only install directory, perl-library
198directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
199unique-items directory, player file directory, random maps directory and
200database environment.
201
202=item $cf::NOW
203
204The time of the last (current) server tick.
205
206=item $cf::TICK
207
208The interval between server ticks, in seconds.
209
210=item $cf::LOADAVG
211
212The current CPU load on the server (alpha-smoothed), as a value between 0
213(none) and 1 (overloaded), indicating how much time is spent on processing
214objects per tick. Healthy values are < 0.5.
215
216=item $cf::LOAD
217
218The raw value load value from the last tick.
219
220=item %cf::CFG
221
222Configuration for the server, loaded from C</etc/deliantra-server/config>, or
223from wherever your confdir points to.
224
225=item cf::wait_for_tick, cf::wait_for_tick_begin
226
227These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
228returns directly I<after> the tick processing (and consequently, can only wake one process
229per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
230
231=item @cf::INVOKE_RESULTS
232
233This array contains the results of the last C<invoke ()> call. When
234C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
235that call.
236
237=item %cf::REFLECT
238
239Contains, for each (C++) class name, a hash reference with information
240about object members (methods, scalars, arrays and flags) and other
241metadata, which is useful for introspection.
242
243=back
244
245=cut
246
247$Coro::State::WARNHOOK = sub {
18 my $msg = join "", @_; 248 my $msg = join "", @_;
249
19 $msg .= "\n" 250 $msg .= "\n"
20 unless $msg =~ /\n$/; 251 unless $msg =~ /\n$/;
21 252
22 print STDERR "cfperl: $msg"; 253 $msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
254
23 LOG llevError, "cfperl: $msg"; 255 LOG llevError, $msg;
256};
257
258$Coro::State::DIEHOOK = sub {
259 return unless $^S eq 0; # "eq", not "=="
260
261 warn Carp::longmess $_[0];
262
263 if ($Coro::current == $Coro::main) {#d#
264 warn "DIEHOOK called in main context, Coro bug?\n";#d#
265 return;#d#
266 }#d#
267
268 # kill coroutine otherwise
269 Coro::terminate
270};
271
272@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
273@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
274@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
275@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
276@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
277@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
278@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
279
280# we bless all objects into (empty) derived classes to force a method lookup
281# within the Safe compartment.
282for my $pkg (qw(
283 cf::global cf::attachable
284 cf::object cf::object::player
285 cf::client cf::player
286 cf::arch cf::living
287 cf::map cf::mapspace
288 cf::party cf::region
289)) {
290 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
291}
292
293$EV::DIED = sub {
294 Carp::cluck "error in event callback: @_";
295};
296
297#############################################################################
298
299=head2 UTILITY FUNCTIONS
300
301=over 4
302
303=item dumpval $ref
304
305=cut
306
307sub dumpval {
308 eval {
309 local $SIG{__DIE__};
310 my $d;
311 if (1) {
312 $d = new Data::Dumper([$_[0]], ["*var"]);
313 $d->Terse(1);
314 $d->Indent(2);
315 $d->Quotekeys(0);
316 $d->Useqq(1);
317 #$d->Bless(...);
318 $d->Seen($_[1]) if @_ > 1;
319 $d = $d->Dump();
320 }
321 $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
322 $d
323 } || "[unable to dump $_[0]: '$@']";
324}
325
326=item $ref = cf::decode_json $json
327
328Converts a JSON string into the corresponding perl data structure.
329
330=item $json = cf::encode_json $ref
331
332Converts a perl data structure into its JSON representation.
333
334=cut
335
336our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
337
338sub encode_json($) { $json_coder->encode ($_[0]) }
339sub decode_json($) { $json_coder->decode ($_[0]) }
340
341=item cf::post_init { BLOCK }
342
343Execute the given codeblock, I<after> all extensions have been (re-)loaded,
344but I<before> the server starts ticking again.
345
346The cdoeblock will have a single boolean argument to indicate whether this
347is a reload or not.
348
349=cut
350
351sub post_init(&) {
352 push @POST_INIT, shift;
353}
354
355=item cf::lock_wait $string
356
357Wait until the given lock is available. See cf::lock_acquire.
358
359=item my $lock = cf::lock_acquire $string
360
361Wait until the given lock is available and then acquires it and returns
362a L<Guard> object. If the guard object gets destroyed (goes out of scope,
363for example when the coroutine gets canceled), the lock is automatically
364returned.
365
366Locks are *not* recursive, locking from the same coro twice results in a
367deadlocked coro.
368
369Lock names should begin with a unique identifier (for example, cf::map::find
370uses map_find and cf::map::load uses map_load).
371
372=item $locked = cf::lock_active $string
373
374Return true if the lock is currently active, i.e. somebody has locked it.
375
376=cut
377
378our $LOCKS = new Coro::SemaphoreSet;
379
380sub lock_wait($) {
381 $LOCKS->wait ($_[0]);
382}
383
384sub lock_acquire($) {
385 $LOCKS->guard ($_[0])
386}
387
388sub lock_active($) {
389 $LOCKS->count ($_[0]) < 1
390}
391
392sub freeze_mainloop {
393 tick_inhibit_inc;
394
395 &Guard::guard (\&tick_inhibit_dec);
396}
397
398=item cf::periodic $interval, $cb
399
400Like EV::periodic, but randomly selects a starting point so that the actions
401get spread over timer.
402
403=cut
404
405sub periodic($$) {
406 my ($interval, $cb) = @_;
407
408 my $start = rand List::Util::min 180, $interval;
409
410 EV::periodic $start, $interval, 0, $cb
411}
412
413=item cf::get_slot $time[, $priority[, $name]]
414
415Allocate $time seconds of blocking CPU time at priority C<$priority>:
416This call blocks and returns only when you have at least C<$time> seconds
417of cpu time till the next tick. The slot is only valid till the next cede.
418
419The optional C<$name> can be used to identify the job to run. It might be
420used for statistical purposes and should identify the same time-class.
421
422Useful for short background jobs.
423
424=cut
425
426our @SLOT_QUEUE;
427our $SLOT_QUEUE;
428
429$SLOT_QUEUE->cancel if $SLOT_QUEUE;
430$SLOT_QUEUE = Coro::async {
431 $Coro::current->desc ("timeslot manager");
432
433 my $signal = new Coro::Signal;
434
435 while () {
436 next_job:
437 my $avail = cf::till_tick;
438 if ($avail > 0.01) {
439 for (0 .. $#SLOT_QUEUE) {
440 if ($SLOT_QUEUE[$_][0] < $avail) {
441 my $job = splice @SLOT_QUEUE, $_, 1, ();
442 $job->[2]->send;
443 Coro::cede;
444 goto next_job;
445 }
446 }
447 }
448
449 if (@SLOT_QUEUE) {
450 # we do not use wait_for_tick() as it returns immediately when tick is inactive
451 push @cf::WAIT_FOR_TICK, $signal;
452 $signal->wait;
453 } else {
454 Coro::schedule;
455 }
456 }
457};
458
459sub get_slot($;$$) {
460 return if tick_inhibit || $Coro::current == $Coro::main;
461
462 my ($time, $pri, $name) = @_;
463
464 $time = $TICK * .6 if $time > $TICK * .6;
465 my $sig = new Coro::Signal;
466
467 push @SLOT_QUEUE, [$time, $pri, $sig, $name];
468 @SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
469 $SLOT_QUEUE->ready;
470 $sig->wait;
471}
472
473=item cf::async { BLOCK }
474
475Currently the same as Coro::async_pool, meaning you cannot use
476C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
477thing you are allowed to do is call C<prio> on it.
478
479=cut
480
481BEGIN { *async = \&Coro::async_pool }
482
483=item cf::sync_job { BLOCK }
484
485The design of Deliantra requires that the main coroutine ($Coro::main)
486is always able to handle events or runnable, as Deliantra is only
487partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
488acceptable.
489
490If it must be done, put the blocking parts into C<sync_job>. This will run
491the given BLOCK in another coroutine while waiting for the result. The
492server will be frozen during this time, so the block should either finish
493fast or be very important.
494
495=cut
496
497sub sync_job(&) {
498 my ($job) = @_;
499
500 if ($Coro::current == $Coro::main) {
501 my $time = EV::time;
502
503 # this is the main coro, too bad, we have to block
504 # till the operation succeeds, freezing the server :/
505
506 LOG llevError, Carp::longmess "sync job";#d#
507
508 my $freeze_guard = freeze_mainloop;
509
510 my $busy = 1;
511 my @res;
512
513 (async {
514 $Coro::current->desc ("sync job coro");
515 @res = eval { $job->() };
516 warn $@ if $@;
517 undef $busy;
518 })->prio (Coro::PRIO_MAX);
519
520 while ($busy) {
521 if (Coro::nready) {
522 Coro::cede_notself;
523 } else {
524 EV::loop EV::LOOP_ONESHOT;
525 }
526 }
527
528 my $time = EV::time - $time;
529
530 $TICK_START += $time; # do not account sync jobs to server load
531
532 wantarray ? @res : $res[0]
533 } else {
534 # we are in another coroutine, how wonderful, everything just works
535
536 $job->()
537 }
538}
539
540=item $coro = cf::async_ext { BLOCK }
541
542Like async, but this coro is automatically being canceled when the
543extension calling this is being unloaded.
544
545=cut
546
547sub async_ext(&) {
548 my $cb = shift;
549
550 my $coro = &Coro::async ($cb);
551
552 $coro->on_destroy (sub {
553 delete $EXT_CORO{$coro+0};
554 });
555 $EXT_CORO{$coro+0} = $coro;
556
557 $coro
558}
559
560=item fork_call { }, $args
561
562Executes the given code block with the given arguments in a seperate
563process, returning the results. Everything must be serialisable with
564Coro::Storable. May, of course, block. Note that the executed sub may
565never block itself or use any form of event handling.
566
567=cut
568
569sub fork_call(&@) {
570 my ($cb, @args) = @_;
571
572 # we seemingly have to make a local copy of the whole thing,
573 # otherwise perl prematurely frees the stuff :/
574 # TODO: investigate and fix (likely this will be rather laborious)
575
576 my @res = Coro::Util::fork_eval {
577 reset_signals;
578 &$cb
579 }, @args;
580
581 wantarray ? @res : $res[-1]
582}
583
584=item $coin = coin_from_name $name
585
586=cut
587
588our %coin_alias = (
589 "silver" => "silvercoin",
590 "silvercoin" => "silvercoin",
591 "silvercoins" => "silvercoin",
592 "gold" => "goldcoin",
593 "goldcoin" => "goldcoin",
594 "goldcoins" => "goldcoin",
595 "platinum" => "platinacoin",
596 "platinumcoin" => "platinacoin",
597 "platinumcoins" => "platinacoin",
598 "platina" => "platinacoin",
599 "platinacoin" => "platinacoin",
600 "platinacoins" => "platinacoin",
601 "royalty" => "royalty",
602 "royalties" => "royalty",
603);
604
605sub coin_from_name($) {
606 $coin_alias{$_[0]}
607 ? cf::arch::find $coin_alias{$_[0]}
608 : undef
609}
610
611=item $value = cf::db_get $family => $key
612
613Returns a single value from the environment database.
614
615=item cf::db_put $family => $key => $value
616
617Stores the given C<$value> in the family. It can currently store binary
618data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
619
620=item $db = cf::db_table "name"
621
622Create and/or open a new database table. The string must not be "db" and must be unique
623within each server.
624
625=cut
626
627sub db_table($) {
628 my ($name) = @_;
629 my $db = BDB::db_create $DB_ENV;
630
631 eval {
632 $db->set_flags (BDB::CHKSUM);
633
634 utf8::encode $name;
635 BDB::db_open $db, undef, $name, undef, BDB::BTREE,
636 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
637 cf::cleanup "db_open(db): $!" if $!;
24 }; 638 };
25} 639 cf::cleanup "db_open(db): $@" if $@;
26 640
27my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply! 641 $db
642}
28 643
29# generate property mutators 644our $DB;
30sub prop_gen { 645
646sub db_init {
647 cf::sync_job {
648 $DB ||= db_table "db";
649 };
650}
651
652sub db_get($$) {
653 my $key = "$_[0]/$_[1]";
654
655 cf::sync_job {
656 BDB::db_get $DB, undef, $key, my $data;
657
658 $! ? ()
659 : $data
660 }
661}
662
663sub db_put($$$) {
664 BDB::dbreq_pri 4;
665 BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
666}
667
668=item cf::cache $id => [$paths...], $processversion => $process
669
670Generic caching function that returns the value of the resource $id,
671caching and regenerating as required.
672
673This function can block.
674
675=cut
676
677sub cache {
678 my ($id, $src, $processversion, $process) = @_;
679
680 my $meta =
681 join "\x00",
682 $processversion,
683 map {
684 aio_stat $_
685 and Carp::croak "$_: $!";
686
687 ($_, (stat _)[7,9])
688 } @$src;
689
690 my $dbmeta = db_get cache => "$id/meta";
691 if ($dbmeta ne $meta) {
692 # changed, we may need to process
693
694 my @data;
695 my $md5;
696
697 for (0 .. $#$src) {
698 0 <= aio_load $src->[$_], $data[$_]
699 or Carp::croak "$src->[$_]: $!";
700 }
701
702 # if processing is expensive, check
703 # checksum first
704 if (1) {
705 $md5 =
706 join "\x00",
707 $processversion,
708 map {
709 cf::cede_to_tick;
710 ($src->[$_], Digest::MD5::md5_hex $data[$_])
711 } 0.. $#$src;
712
713
714 my $dbmd5 = db_get cache => "$id/md5";
715 if ($dbmd5 eq $md5) {
716 db_put cache => "$id/meta", $meta;
717
718 return db_get cache => "$id/data";
719 }
720 }
721
722 my $t1 = Time::HiRes::time;
723 my $data = $process->(\@data);
724 my $t2 = Time::HiRes::time;
725
726 warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
727
728 db_put cache => "$id/data", $data;
729 db_put cache => "$id/md5" , $md5;
730 db_put cache => "$id/meta", $meta;
731
732 return $data;
733 }
734
735 db_get cache => "$id/data"
736}
737
738=item cf::datalog type => key => value, ...
739
740Log a datalog packet of the given type with the given key-value pairs.
741
742=cut
743
744sub datalog($@) {
745 my ($type, %kv) = @_;
746 warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
747}
748
749=back
750
751=cut
752
753#############################################################################
754
755=head2 ATTACHABLE OBJECTS
756
757Many objects in deliantra are so-called attachable objects. That means you can
758attach callbacks/event handlers (a collection of which is called an "attachment")
759to it. All such attachable objects support the following methods.
760
761In the following description, CLASS can be any of C<global>, C<object>
762C<player>, C<client> or C<map> (i.e. the attachable objects in
763Deliantra).
764
765=over 4
766
767=item $attachable->attach ($attachment, key => $value...)
768
769=item $attachable->detach ($attachment)
770
771Attach/detach a pre-registered attachment to a specific object and give it
772the specified key/value pairs as arguments.
773
774Example, attach a minesweeper attachment to the given object, making it a
77510x10 minesweeper game:
776
777 $obj->attach (minesweeper => width => 10, height => 10);
778
779=item $bool = $attachable->attached ($name)
780
781Checks wether the named attachment is currently attached to the object.
782
783=item cf::CLASS->attach ...
784
785=item cf::CLASS->detach ...
786
787Define an anonymous attachment and attach it to all objects of the given
788CLASS. See the next function for an explanation of its arguments.
789
790You can attach to global events by using the C<cf::global> class.
791
792Example, log all player logins:
793
794 cf::player->attach (
795 on_login => sub {
796 my ($pl) = @_;
797 ...
798 },
799 );
800
801Example, attach to the jeweler skill:
802
803 cf::object->attach (
804 type => cf::SKILL,
805 subtype => cf::SK_JEWELER,
806 on_use_skill => sub {
807 my ($sk, $ob, $part, $dir, $msg) = @_;
808 ...
809 },
810 );
811
812=item cf::CLASS::attachment $name, ...
813
814Register an attachment by C<$name> through which attachable objects of the
815given CLASS can refer to this attachment.
816
817Some classes such as deliantra maps and objects can specify attachments
818that are attached at load/instantiate time, thus the need for a name.
819
820These calls expect any number of the following handler/hook descriptions:
821
822=over 4
823
824=item prio => $number
825
826Set the priority for all following handlers/hooks (unless overwritten
827by another C<prio> setting). Lower priority handlers get executed
828earlier. The default priority is C<0>, and many built-in handlers are
829registered at priority C<-1000>, so lower priorities should not be used
830unless you know what you are doing.
831
832=item type => $type
833
834(Only for C<< cf::object->attach >> calls), limits the attachment to the
835given type of objects only (the additional parameter C<subtype> can be
836used to further limit to the given subtype).
837
838=item on_I<event> => \&cb
839
840Call the given code reference whenever the named event happens (event is
841something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
842handlers are recognised generally depends on the type of object these
843handlers attach to).
844
845See F<include/eventinc.h> for the full list of events supported, and their
846class.
847
848=item package => package::
849
850Look for sub functions of the name C<< on_I<event> >> in the given
851package and register them. Only handlers for eevents supported by the
852object/class are recognised.
853
854=back
855
856Example, define an attachment called "sockpuppet" that calls the given
857event handler when a monster attacks:
858
859 cf::object::attachment sockpuppet =>
860 on_skill_attack => sub {
861 my ($self, $victim) = @_;
862 ...
863 }
864 }
865
866=item $attachable->valid
867
868Just because you have a perl object does not mean that the corresponding
869C-level object still exists. If you try to access an object that has no
870valid C counterpart anymore you get an exception at runtime. This method
871can be used to test for existence of the C object part without causing an
872exception.
873
874=cut
875
876# the following variables are defined in .xs and must not be re-created
877our @CB_GLOBAL = (); # registry for all global events
878our @CB_ATTACHABLE = (); # registry for all attachables
879our @CB_OBJECT = (); # all objects (should not be used except in emergency)
880our @CB_PLAYER = ();
881our @CB_CLIENT = ();
882our @CB_TYPE = (); # registry for type (cf-object class) based events
883our @CB_MAP = ();
884
885my %attachment;
886
887sub cf::attachable::thawer_merge {
888 # simply override everything except _meta
889 local $_[0]{_meta};
890 %{$_[0]} = %{$_[1]};
891}
892
893sub _attach_cb($$$$) {
894 my ($registry, $event, $prio, $cb) = @_;
895
896 use sort 'stable';
897
898 $cb = [$prio, $cb];
899
900 @{$registry->[$event]} = sort
901 { $a->[0] cmp $b->[0] }
902 @{$registry->[$event] || []}, $cb;
903}
904
905# hack
906my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
907
908# attach handles attaching event callbacks
909# the only thing the caller has to do is pass the correct
910# registry (== where the callback attaches to).
911sub _attach {
912 my ($registry, $klass, @arg) = @_;
913
914 my $object_type;
915 my $prio = 0;
916 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
917
918 #TODO: get rid of this hack
919 if ($attachable_klass{$klass}) {
920 %cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
921 }
922
923 while (@arg) {
924 my $type = shift @arg;
925
926 if ($type eq "prio") {
927 $prio = shift @arg;
928
929 } elsif ($type eq "type") {
930 $object_type = shift @arg;
931 $registry = $CB_TYPE[$object_type] ||= [];
932
933 } elsif ($type eq "subtype") {
934 defined $object_type or Carp::croak "subtype specified without type";
935 my $object_subtype = shift @arg;
936 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
937
938 } elsif ($type eq "package") {
939 my $pkg = shift @arg;
940
941 while (my ($name, $id) = each %cb_id) {
942 if (my $cb = $pkg->can ($name)) {
943 _attach_cb $registry, $id, $prio, $cb;
944 }
945 }
946
947 } elsif (exists $cb_id{$type}) {
948 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
949
950 } elsif (ref $type) {
951 warn "attaching objects not supported, ignoring.\n";
952
953 } else {
954 shift @arg;
955 warn "attach argument '$type' not supported, ignoring.\n";
956 }
957 }
958}
959
960sub _object_attach {
961 my ($obj, $name, %arg) = @_;
962
963 return if exists $obj->{_attachment}{$name};
964
965 if (my $attach = $attachment{$name}) {
966 my $registry = $obj->registry;
967
968 for (@$attach) {
969 my ($klass, @attach) = @$_;
970 _attach $registry, $klass, @attach;
971 }
972
973 $obj->{$name} = \%arg;
974 } else {
975 warn "object uses attachment '$name' which is not available, postponing.\n";
976 }
977
978 $obj->{_attachment}{$name} = undef;
979}
980
981sub cf::attachable::attach {
982 if (ref $_[0]) {
983 _object_attach @_;
984 } else {
985 _attach shift->_attach_registry, @_;
986 }
987 _recalc_want;
988};
989
990# all those should be optimised
991sub cf::attachable::detach {
992 my ($obj, $name) = @_;
993
994 if (ref $obj) {
995 delete $obj->{_attachment}{$name};
996 reattach ($obj);
997 } else {
998 Carp::croak "cannot, currently, detach class attachments";
999 }
1000 _recalc_want;
1001};
1002
1003sub cf::attachable::attached {
1004 my ($obj, $name) = @_;
1005
1006 exists $obj->{_attachment}{$name}
1007}
1008
1009for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
1010 eval "#line " . __LINE__ . " 'cf.pm'
1011 sub cf::\L$klass\E::_attach_registry {
1012 (\\\@CB_$klass, KLASS_$klass)
1013 }
1014
1015 sub cf::\L$klass\E::attachment {
1016 my \$name = shift;
1017
1018 \$attachment{\$name} = [[KLASS_$klass, \@_]];
1019 }
1020 ";
1021 die if $@;
1022}
1023
1024our $override;
1025our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
1026
1027sub override {
1028 $override = 1;
1029 @INVOKE_RESULTS = (@_);
1030}
1031
1032sub do_invoke {
1033 my $event = shift;
1034 my $callbacks = shift;
1035
1036 @INVOKE_RESULTS = ();
1037
1038 local $override;
1039
1040 for (@$callbacks) {
1041 eval { &{$_->[1]} };
1042
1043 if ($@) {
1044 warn "$@";
1045 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
1046 override;
1047 }
1048
1049 return 1 if $override;
1050 }
1051
1052 0
1053}
1054
1055=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
1056
1057=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
1058
1059Generate an object-specific event with the given arguments.
1060
1061This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
1062removed in future versions), and there is no public API to access override
1063results (if you must, access C<@cf::INVOKE_RESULTS> directly).
1064
1065=back
1066
1067=cut
1068
1069#############################################################################
1070# object support
1071
1072sub _object_equal($$);
1073sub _object_equal($$) {
1074 my ($a, $b) = @_;
1075
1076 return 0 unless (ref $a) eq (ref $b);
1077
1078 if ("HASH" eq ref $a) {
1079 my @ka = keys %$a;
1080 my @kb = keys %$b;
1081
1082 return 0 if @ka != @kb;
1083
1084 for (0 .. $#ka) {
1085 return 0 unless $ka[$_] eq $kb[$_];
1086 return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
1087 }
1088
1089 } elsif ("ARRAY" eq ref $a) {
1090
1091 return 0 if @$a != @$b;
1092
1093 for (0 .. $#$a) {
1094 return 0 unless _object_equal $a->[$_], $b->[$_];
1095 }
1096
1097 } elsif ($a ne $b) {
1098 return 0;
1099 }
1100
1101 1
1102}
1103
1104our $SLOW_MERGES;#d#
1105sub _can_merge {
1106 my ($ob1, $ob2) = @_;
1107
1108 ++$SLOW_MERGES;#d#
1109
1110 # we do the slow way here
1111 return _object_equal $ob1, $ob2
1112}
1113
1114sub reattach {
1115 # basically do the same as instantiate, without calling instantiate
1116 my ($obj) = @_;
1117
1118 # no longer needed after getting rid of delete_package?
1119 #bless $obj, ref $obj; # re-bless in case extensions have been reloaded
1120
1121 my $registry = $obj->registry;
1122
1123 @$registry = ();
1124
1125 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
1126
1127 for my $name (keys %{ $obj->{_attachment} || {} }) {
1128 if (my $attach = $attachment{$name}) {
1129 for (@$attach) {
1130 my ($klass, @attach) = @$_;
1131 _attach $registry, $klass, @attach;
1132 }
1133 } else {
1134 warn "object uses attachment '$name' that is not available, postponing.\n";
1135 }
1136 }
1137}
1138
1139cf::attachable->attach (
1140 prio => -1000000,
1141 on_instantiate => sub {
1142 my ($obj, $data) = @_;
1143
1144 $data = decode_json $data;
1145
1146 for (@$data) {
1147 my ($name, $args) = @$_;
1148
1149 $obj->attach ($name, %{$args || {} });
1150 }
1151 },
1152 on_reattach => \&reattach,
1153 on_clone => sub {
1154 my ($src, $dst) = @_;
1155
1156 @{$dst->registry} = @{$src->registry};
1157
1158 %$dst = %$src;
1159
1160 %{$dst->{_attachment}} = %{$src->{_attachment}}
1161 if exists $src->{_attachment};
1162 },
1163);
1164
1165sub object_freezer_save {
1166 my ($filename, $rdata, $objs) = @_;
1167
1168 sync_job {
1169 if (length $$rdata) {
1170 utf8::decode (my $decname = $filename);
1171 warn sprintf "saving %s (%d,%d)\n",
1172 $decname, length $$rdata, scalar @$objs;
1173
1174 if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
1175 aio_chmod $fh, SAVE_MODE;
1176 aio_write $fh, 0, (length $$rdata), $$rdata, 0;
1177 if ($cf::USE_FSYNC) {
1178 aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
1179 aio_fsync $fh;
1180 }
1181 aio_close $fh;
1182
1183 if (@$objs) {
1184 if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
1185 aio_chmod $fh, SAVE_MODE;
1186 my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
1187 aio_write $fh, 0, (length $data), $data, 0;
1188 if ($cf::USE_FSYNC) {
1189 aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
1190 aio_fsync $fh;
1191 }
1192 aio_close $fh;
1193 aio_rename "$filename.pst~", "$filename.pst";
1194 }
1195 } else {
1196 aio_unlink "$filename.pst";
1197 }
1198
1199 aio_rename "$filename~", $filename;
1200
1201 $filename =~ s%/[^/]+$%%;
1202 aio_pathsync $filename if $cf::USE_FSYNC;
1203 } else {
1204 warn "unable to save objects: $filename~: $!\n";
1205 }
1206 } else {
1207 aio_unlink $filename;
1208 aio_unlink "$filename.pst";
1209 }
1210 };
1211}
1212
1213sub object_freezer_as_string {
1214 my ($rdata, $objs) = @_;
1215
1216 use Data::Dumper;
1217
1218 $$rdata . Dumper $objs
1219}
1220
1221sub object_thawer_load {
1222 my ($filename) = @_;
1223
1224 my ($data, $av);
1225
1226 (aio_load $filename, $data) >= 0
1227 or return;
1228
1229 unless (aio_stat "$filename.pst") {
1230 (aio_load "$filename.pst", $av) >= 0
1231 or return;
1232
1233 my $st = eval { Coro::Storable::thaw $av };
1234 $av = $st->{objs};
1235 }
1236
1237 utf8::decode (my $decname = $filename);
1238 warn sprintf "loading %s (%d,%d)\n",
1239 $decname, length $data, scalar @{$av || []};
1240
1241 ($data, $av)
1242}
1243
1244=head2 COMMAND CALLBACKS
1245
1246=over 4
1247
1248=cut
1249
1250#############################################################################
1251# command handling &c
1252
1253=item cf::register_command $name => \&callback($ob,$args);
1254
1255Register a callback for execution when the client sends the user command
1256$name.
1257
1258=cut
1259
1260sub register_command {
1261 my ($name, $cb) = @_;
1262
1263 my $caller = caller;
1264 #warn "registering command '$name/$time' to '$caller'";
1265
1266 push @{ $COMMAND{$name} }, [$caller, $cb];
1267}
1268
1269=item cf::register_extcmd $name => \&callback($pl,$packet);
1270
1271Register a callback for execution when the client sends an (synchronous)
1272extcmd packet. Ext commands will be processed in the order they are
1273received by the server, like other user commands. The first argument is
1274the logged-in player. Ext commands can only be processed after a player
1275has logged in successfully.
1276
1277If the callback returns something, it is sent back as if reply was being
1278called.
1279
1280=item cf::register_exticmd $name => \&callback($ns,$packet);
1281
1282Register a callback for execution when the client sends an (asynchronous)
1283exticmd packet. Exti commands are processed by the server as soon as they
1284are received, i.e. out of order w.r.t. other commands. The first argument
1285is a client socket. Exti commands can be received anytime, even before
1286log-in.
1287
1288If the callback returns something, it is sent back as if reply was being
1289called.
1290
1291=cut
1292
1293sub register_extcmd {
1294 my ($name, $cb) = @_;
1295
1296 $EXTCMD{$name} = $cb;
1297}
1298
1299sub register_exticmd {
1300 my ($name, $cb) = @_;
1301
1302 $EXTICMD{$name} = $cb;
1303}
1304
1305use File::Glob ();
1306
1307cf::player->attach (
1308 on_command => sub {
1309 my ($pl, $name, $params) = @_;
1310
1311 my $cb = $COMMAND{$name}
1312 or return;
1313
1314 for my $cmd (@$cb) {
1315 $cmd->[1]->($pl->ob, $params);
1316 }
1317
1318 cf::override;
1319 },
1320 on_extcmd => sub {
1321 my ($pl, $buf) = @_;
1322
1323 my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
1324
1325 if (ref $msg) {
1326 my ($type, $reply, @payload) =
1327 "ARRAY" eq ref $msg
1328 ? @$msg
1329 : ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
1330
1331 my @reply;
1332
1333 if (my $cb = $EXTCMD{$type}) {
1334 @reply = $cb->($pl, @payload);
1335 }
1336
1337 $pl->ext_reply ($reply, @reply)
1338 if $reply;
1339
1340 } else {
1341 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
1342 }
1343
1344 cf::override;
1345 },
1346);
1347
1348# "readahead" all extensions
1349sub cache_extensions {
1350 my $grp = IO::AIO::aio_group;
1351
1352 add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
1353 for (grep /\.ext$/, @{$_[0]}) {
1354 add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
1355 }
1356 };
1357
1358 $grp
1359}
1360
1361sub load_extensions {
1362 cf::sync_job {
1363 my %todo;
1364
1365 for my $path (<$LIBDIR/*.ext>) {
1366 next unless -r $path;
1367
1368 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
1369 my $base = $1;
1370 my $pkg = $1;
1371 $pkg =~ s/[^[:word:]]/_/g;
1372 $pkg = "ext::$pkg";
1373
1374 open my $fh, "<:utf8", $path
1375 or die "$path: $!";
1376
1377 my $source = do { local $/; <$fh> };
1378
1379 my %ext = (
1380 path => $path,
1381 base => $base,
1382 pkg => $pkg,
1383 );
1384
1385 $ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
1386 if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
1387
1388 $ext{source} =
1389 "package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
1390 . "#line 1 \"$path\"\n{\n"
1391 . $source
1392 . "\n};\n1";
1393
1394 $todo{$base} = \%ext;
1395 }
1396
1397 my %done;
1398 while (%todo) {
1399 my $progress;
1400
1401 while (my ($k, $v) = each %todo) {
1402 for (split /,\s*/, $v->{meta}{depends}) {
1403 goto skip
1404 unless exists $done{$_};
1405 }
1406
1407 warn "... loading '$k' into '$v->{pkg}'\n";
1408
1409 unless (eval $v->{source}) {
1410 my $msg = $@ ? "$v->{path}: $@\n"
1411 : "$v->{base}: extension inactive.\n";
1412
1413 if (exists $v->{meta}{mandatory}) {
1414 warn $msg;
1415 cf::cleanup "mandatory extension failed to load, exiting.";
1416 }
1417
1418 warn $msg;
1419 }
1420
1421 $done{$k} = delete $todo{$k};
1422 push @EXTS, $v->{pkg};
1423 $progress = 1;
1424 }
1425
1426 skip:
1427 die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
1428 unless $progress;
1429 }
1430 };
1431}
1432
1433#############################################################################
1434
1435=back
1436
1437=head2 CORE EXTENSIONS
1438
1439Functions and methods that extend core deliantra objects.
1440
1441=cut
1442
1443package cf::player;
1444
1445use Coro::AIO;
1446
1447=head3 cf::player
1448
1449=over 4
1450
1451=item cf::player::num_playing
1452
1453Returns the official number of playing players, as per the Crossfire metaserver rules.
1454
1455=cut
1456
1457sub num_playing {
1458 scalar grep
1459 $_->ob->map
1460 && !$_->hidden
1461 && !$_->ob->flag (cf::FLAG_WIZ),
1462 cf::player::list
1463}
1464
1465=item cf::player::find $login
1466
1467Returns the given player object, loading it if necessary (might block).
1468
1469=cut
1470
1471sub playerdir($) {
1472 "$PLAYERDIR/"
1473 . (ref $_[0] ? $_[0]->ob->name : $_[0])
1474}
1475
1476sub path($) {
1477 my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
1478
1479 (playerdir $login) . "/playerdata"
1480}
1481
1482sub find_active($) {
1483 $cf::PLAYER{$_[0]}
1484 and $cf::PLAYER{$_[0]}->active
1485 and $cf::PLAYER{$_[0]}
1486}
1487
1488sub exists($) {
1489 my ($login) = @_;
1490
1491 $cf::PLAYER{$login}
1492 or !aio_stat path $login
1493}
1494
1495sub find($) {
1496 return $cf::PLAYER{$_[0]} || do {
1497 my $login = $_[0];
1498
1499 my $guard = cf::lock_acquire "user_find:$login";
1500
1501 $cf::PLAYER{$_[0]} || do {
1502 # rename old playerfiles to new ones
1503 #TODO: remove when no longer required
1504 aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
1505 aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
1506 aio_unlink +(playerdir $login) . "/$login.pl.pst";
1507 aio_unlink +(playerdir $login) . "/$login.pl";
1508
1509 my $f = new_from_file cf::object::thawer path $login
1510 or return;
1511
1512 my $pl = cf::player::load_pl $f
1513 or return;
1514
1515 local $cf::PLAYER_LOADING{$login} = $pl;
1516 $f->resolve_delayed_derefs;
1517 $cf::PLAYER{$login} = $pl
1518 }
1519 }
1520}
1521
1522sub save($) {
1523 my ($pl) = @_;
1524
1525 return if $pl->{deny_save};
1526
1527 my $path = path $pl;
1528 my $guard = cf::lock_acquire "user_save:$path";
1529
1530 return if $pl->{deny_save};
1531
1532 aio_mkdir playerdir $pl, 0770;
1533 $pl->{last_save} = $cf::RUNTIME;
1534
1535 cf::get_slot 0.01;
1536
1537 $pl->save_pl ($path);
1538 cf::cede_to_tick;
1539}
1540
1541sub new($) {
1542 my ($login) = @_;
1543
1544 my $self = create;
1545
1546 $self->ob->name ($login);
1547 $self->{deny_save} = 1;
1548
1549 $cf::PLAYER{$login} = $self;
1550
1551 $self
1552}
1553
1554=item $player->send_msg ($channel, $msg, $color, [extra...])
1555
1556=cut
1557
1558sub send_msg {
1559 my $ns = shift->ns
1560 or return;
1561 $ns->send_msg (@_);
1562}
1563
1564=item $pl->quit_character
1565
1566Nukes the player without looking back. If logged in, the connection will
1567be destroyed. May block for a long time.
1568
1569=cut
1570
1571sub quit_character {
1572 my ($pl) = @_;
1573
1574 my $name = $pl->ob->name;
1575
1576 $pl->{deny_save} = 1;
1577 $pl->password ("*"); # this should lock out the player until we have nuked the dir
1578
1579 $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1580 $pl->deactivate;
1581 my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
1582 $pl->ob->check_score;
1583 $pl->invoke (cf::EVENT_PLAYER_QUIT);
1584 $pl->ns->destroy if $pl->ns;
1585
1586 my $path = playerdir $pl;
1587 my $temp = "$path~$cf::RUNTIME~deleting~";
1588 aio_rename $path, $temp;
1589 delete $cf::PLAYER{$pl->ob->name};
1590 $pl->destroy;
1591
1592 my $prefix = qr<^~\Q$name\E/>;
1593
1594 # nuke player maps
1595 $cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
1596
1597 IO::AIO::aio_rmtree $temp;
1598}
1599
1600=item $pl->kick
1601
1602Kicks a player out of the game. This destroys the connection.
1603
1604=cut
1605
1606sub kick {
1607 my ($pl, $kicker) = @_;
1608
1609 $pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
1610 $pl->killer ("kicked");
1611 $pl->ns->destroy;
1612}
1613
1614=item cf::player::list_logins
1615
1616Returns am arrayref of all valid playernames in the system, can take a
1617while and may block, so not sync_job-capable, ever.
1618
1619=cut
1620
1621sub list_logins {
1622 my $dirs = aio_readdir $PLAYERDIR
1623 or return [];
1624
1625 my @logins;
1626
1627 for my $login (@$dirs) {
1628 my $path = path $login;
1629
1630 # a .pst is a dead give-away for a valid player
1631 # if no pst file found, open and chekc for blocked users
1632 if (aio_stat "$path.pst") {
1633 my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
1634 aio_read $fh, 0, 512, my $buf, 0 or next;
1635 $buf !~ /^password -------------$/m or next; # official not-valid tag
1636 }
1637
1638 utf8::decode $login;
1639 push @logins, $login;
1640 }
1641
1642 \@logins
1643}
1644
1645=item $player->maps
1646
1647Returns an arrayref of map paths that are private for this
1648player. May block.
1649
1650=cut
1651
1652sub maps($) {
1653 my ($pl) = @_;
1654
1655 $pl = ref $pl ? $pl->ob->name : $pl;
1656
1657 my $files = aio_readdir playerdir $pl
1658 or return;
1659
1660 my @paths;
1661
1662 for (@$files) {
1663 utf8::decode $_;
1664 next if /\.(?:pl|pst)$/;
1665 next unless /^$PATH_SEP/o;
1666
1667 push @paths, cf::map::normalise "~$pl/$_";
1668 }
1669
1670 \@paths
1671}
1672
1673=item $protocol_xml = $player->expand_cfpod ($cfpod)
1674
1675Expand deliantra pod fragments into protocol xml.
1676
1677=item $player->ext_reply ($msgid, @msg)
1678
1679Sends an ext reply to the player.
1680
1681=cut
1682
1683sub ext_reply($$@) {
1684 my ($self, $id, @msg) = @_;
1685
1686 $self->ns->ext_reply ($id, @msg)
1687}
1688
1689=item $player->ext_msg ($type, @msg)
1690
1691Sends an ext event to the client.
1692
1693=cut
1694
1695sub ext_msg($$@) {
1696 my ($self, $type, @msg) = @_;
1697
1698 $self->ns->ext_msg ($type, @msg);
1699}
1700
1701=head3 cf::region
1702
1703=over 4
1704
1705=cut
1706
1707package cf::region;
1708
1709=item cf::region::find_by_path $path
1710
1711Tries to decuce the likely region for a map knowing only its path.
1712
1713=cut
1714
1715sub find_by_path($) {
1716 my ($path) = @_;
1717
1718 my ($match, $specificity);
1719
1720 for my $region (list) {
1721 if ($region->{match} && $path =~ $region->{match}) {
1722 ($match, $specificity) = ($region, $region->specificity)
1723 if $region->specificity > $specificity;
1724 }
1725 }
1726
1727 $match
1728}
1729
1730=back
1731
1732=head3 cf::map
1733
1734=over 4
1735
1736=cut
1737
1738package cf::map;
1739
1740use Fcntl;
1741use Coro::AIO;
1742
1743use overload
1744 '""' => \&as_string,
1745 fallback => 1;
1746
1747our $MAX_RESET = 3600;
1748our $DEFAULT_RESET = 3000;
1749
1750sub generate_random_map {
1751 my ($self, $rmp) = @_;
1752
1753 my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
1754
1755 # mit "rum" bekleckern, nicht
1756 $self->_create_random_map (
1757 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1758 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1759 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1760 $rmp->{exit_on_final_map},
1761 $rmp->{xsize}, $rmp->{ysize},
1762 $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1763 $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1764 $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1765 $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1766 $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1767 (cf::region::find $rmp->{region}), $rmp->{custom}
1768 )
1769}
1770
1771=item cf::map->register ($regex, $prio)
1772
1773Register a handler for the map path matching the given regex at the
1774givne priority (higher is better, built-in handlers have priority 0, the
1775default).
1776
1777=cut
1778
1779sub register {
1780 my (undef, $regex, $prio) = @_;
1781 my $pkg = caller;
1782
1783 no strict;
1784 push @{"$pkg\::ISA"}, __PACKAGE__;
1785
1786 $EXT_MAP{$pkg} = [$prio, qr<$regex>];
1787}
1788
1789# also paths starting with '/'
1790$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
1791
1792sub thawer_merge {
1793 my ($self, $merge) = @_;
1794
1795 # we have to keep some variables in memory intact
1796 local $self->{path};
1797 local $self->{load_path};
1798
1799 $self->SUPER::thawer_merge ($merge);
1800}
1801
1802sub normalise {
1803 my ($path, $base) = @_;
1804
1805 $path = "$path"; # make sure its a string
1806
1807 $path =~ s/\.map$//;
1808
1809 # map plan:
1810 #
1811 # /! non-realised random map exit (special hack!)
1812 # {... are special paths that are not being touched
1813 # ?xxx/... are special absolute paths
1814 # ?random/... random maps
1815 # /... normal maps
1816 # ~user/... per-player map of a specific user
1817
1818 $path =~ s/$PATH_SEP/\//go;
1819
1820 # treat it as relative path if it starts with
1821 # something that looks reasonable
1822 if ($path =~ m{^(?:\./|\.\./|\w)}) {
1823 $base or Carp::carp "normalise called with relative path and no base: '$path'";
1824
1825 $base =~ s{[^/]+/?$}{};
1826 $path = "$base/$path";
1827 }
1828
1829 for ($path) {
1830 redo if s{//}{/};
1831 redo if s{/\.?/}{/};
1832 redo if s{/[^/]+/\.\./}{/};
1833 }
1834
1835 $path
1836}
1837
1838sub new_from_path {
1839 my (undef, $path, $base) = @_;
1840
1841 return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
1842
1843 $path = normalise $path, $base;
1844
1845 for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
1846 if ($path =~ $EXT_MAP{$pkg}[1]) {
1847 my $self = bless cf::map::new, $pkg;
1848 $self->{path} = $path; $self->path ($path);
1849 $self->init; # pass $1 etc.
1850 return $self;
1851 }
1852 }
1853
1854 Carp::cluck "unable to resolve path '$path' (base '$base').";
1855 ()
1856}
1857
1858sub init {
1859 my ($self) = @_;
1860
1861 $self
1862}
1863
1864sub as_string {
1865 my ($self) = @_;
1866
1867 "$self->{path}"
1868}
1869
1870# the displayed name, this is a one way mapping
1871sub visible_name {
1872 &as_string
1873}
1874
1875# the original (read-only) location
1876sub load_path {
1877 my ($self) = @_;
1878
1879 "$MAPDIR/$self->{path}.map"
1880}
1881
1882# the temporary/swap location
1883sub save_path {
1884 my ($self) = @_;
1885
1886 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1887 "$TMPDIR/$path.map"
1888}
1889
1890# the unique path, undef == no special unique path
1891sub uniq_path {
1892 my ($self) = @_;
1893
1894 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1895 "$UNIQUEDIR/$path"
1896}
1897
1898sub decay_objects {
1899 my ($self) = @_;
1900
1901 return if $self->{deny_reset};
1902
1903 $self->do_decay_objects;
1904}
1905
1906sub unlink_save {
1907 my ($self) = @_;
1908
1909 utf8::encode (my $save = $self->save_path);
1910 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1911 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1912}
1913
1914sub load_header_from($) {
1915 my ($self, $path) = @_;
1916
1917 utf8::encode $path;
1918 my $f = new_from_file cf::object::thawer $path
1919 or return;
1920
1921 $self->_load_header ($f)
1922 or return;
1923
1924 local $MAP_LOADING{$self->{path}} = $self;
1925 $f->resolve_delayed_derefs;
1926
1927 $self->{load_path} = $path;
1928
1929 1
1930}
1931
1932sub load_header_orig {
1933 my ($self) = @_;
1934
1935 $self->load_header_from ($self->load_path)
1936}
1937
1938sub load_header_temp {
1939 my ($self) = @_;
1940
1941 $self->load_header_from ($self->save_path)
1942}
1943
1944sub prepare_temp {
1945 my ($self) = @_;
1946
1947 $self->last_access ((delete $self->{last_access})
1948 || $cf::RUNTIME); #d#
1949 # safety
1950 $self->{instantiate_time} = $cf::RUNTIME
1951 if $self->{instantiate_time} > $cf::RUNTIME;
1952}
1953
1954sub prepare_orig {
1955 my ($self) = @_;
1956
1957 $self->{load_original} = 1;
1958 $self->{instantiate_time} = $cf::RUNTIME;
1959 $self->last_access ($cf::RUNTIME);
1960 $self->instantiate;
1961}
1962
1963sub load_header {
1964 my ($self) = @_;
1965
1966 if ($self->load_header_temp) {
1967 $self->prepare_temp;
1968 } else {
1969 $self->load_header_orig
1970 or return;
1971 $self->prepare_orig;
1972 }
1973
1974 $self->{deny_reset} = 1
1975 if $self->no_reset;
1976
1977 $self->default_region (cf::region::find_by_path $self->{path})
1978 unless $self->default_region;
1979
1980 1
1981}
1982
1983sub find;
1984sub find {
1985 my ($path, $origin) = @_;
1986
1987 $path = normalise $path, $origin && $origin->path;
1988
1989 my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
1990 my $guard2 = cf::lock_acquire "map_find:$path";
1991
1992 $cf::MAP{$path} || do {
1993 my $map = new_from_path cf::map $path
1994 or return;
1995
1996 $map->{last_save} = $cf::RUNTIME;
1997
1998 $map->load_header
1999 or return;
2000
2001 if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
2002 # doing this can freeze the server in a sync job, obviously
2003 #$cf::WAIT_FOR_TICK->wait;
2004 undef $guard2;
2005 undef $guard1;
2006 $map->reset;
2007 return find $path;
2008 }
2009
2010 $cf::MAP{$path} = $map
2011 }
2012}
2013
2014sub pre_load { }
2015sub post_load { }
2016
2017sub load {
2018 my ($self) = @_;
2019
2020 local $self->{deny_reset} = 1; # loading can take a long time
2021
2022 my $path = $self->{path};
2023
2024 {
2025 my $guard = cf::lock_acquire "map_data:$path";
2026
2027 return unless $self->valid;
2028 return unless $self->in_memory == cf::MAP_SWAPPED;
2029
2030 $self->in_memory (cf::MAP_LOADING);
2031
2032 $self->alloc;
2033
2034 $self->pre_load;
2035 cf::cede_to_tick;
2036
2037 my $f = new_from_file cf::object::thawer $self->{load_path};
2038 $f->skip_block;
2039 $self->_load_objects ($f)
2040 or return;
2041
2042 $self->post_load_original
2043 if delete $self->{load_original};
2044
2045 if (my $uniq = $self->uniq_path) {
2046 utf8::encode $uniq;
2047 unless (aio_stat $uniq) {
2048 if (my $f = new_from_file cf::object::thawer $uniq) {
2049 $self->clear_unique_items;
2050 $self->_load_objects ($f);
2051 $f->resolve_delayed_derefs;
2052 }
2053 }
2054 }
2055
2056 $f->resolve_delayed_derefs;
2057
2058 cf::cede_to_tick;
2059 # now do the right thing for maps
2060 $self->link_multipart_objects;
2061 $self->difficulty ($self->estimate_difficulty)
2062 unless $self->difficulty;
2063 cf::cede_to_tick;
2064
2065 unless ($self->{deny_activate}) {
2066 $self->decay_objects;
2067 $self->fix_auto_apply;
2068 $self->update_buttons;
2069 cf::cede_to_tick;
2070 $self->activate;
2071 }
2072
2073 $self->{last_save} = $cf::RUNTIME;
2074 $self->last_access ($cf::RUNTIME);
2075
2076 $self->in_memory (cf::MAP_ACTIVE);
2077 }
2078
2079 $self->post_load;
2080}
2081
2082sub customise_for {
2083 my ($self, $ob) = @_;
2084
2085 return find "~" . $ob->name . "/" . $self->{path}
2086 if $self->per_player;
2087
2088# return find "?party/" . $ob->name . "/" . $self->{path}
2089# if $self->per_party;
2090
2091 $self
2092}
2093
2094# find and load all maps in the 3x3 area around a map
2095sub load_neighbours {
2096 my ($map) = @_;
2097
2098 my @neigh; # diagonal neighbours
2099
2100 for (0 .. 3) {
2101 my $neigh = $map->tile_path ($_)
2102 or next;
2103 $neigh = find $neigh, $map
2104 or next;
2105 $neigh->load;
2106
2107 push @neigh,
2108 [$neigh->tile_path (($_ + 3) % 4), $neigh],
2109 [$neigh->tile_path (($_ + 1) % 4), $neigh];
2110 }
2111
2112 for (grep defined $_->[0], @neigh) {
2113 my ($path, $origin) = @$_;
2114 my $neigh = find $path, $origin
2115 or next;
2116 $neigh->load;
2117 }
2118}
2119
2120sub find_sync {
2121 my ($path, $origin) = @_;
2122
2123 cf::sync_job { find $path, $origin }
2124}
2125
2126sub do_load_sync {
2127 my ($map) = @_;
2128
2129 cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
2130 if $Coro::current == $Coro::main;
2131
2132 cf::sync_job { $map->load };
2133}
2134
2135our %MAP_PREFETCH;
2136our $MAP_PREFETCHER = undef;
2137
2138sub find_async {
2139 my ($path, $origin, $load) = @_;
2140
2141 $path = normalise $path, $origin && $origin->{path};
2142
2143 if (my $map = $cf::MAP{$path}) {
2144 return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
2145 }
2146
2147 $MAP_PREFETCH{$path} |= $load;
2148
2149 $MAP_PREFETCHER ||= cf::async {
2150 $Coro::current->{desc} = "map prefetcher";
2151
2152 while (%MAP_PREFETCH) {
2153 while (my ($k, $v) = each %MAP_PREFETCH) {
2154 if (my $map = find $k) {
2155 $map->load if $v;
2156 }
2157
2158 delete $MAP_PREFETCH{$k};
2159 }
2160 }
2161 undef $MAP_PREFETCHER;
2162 };
2163 $MAP_PREFETCHER->prio (6);
2164
2165 ()
2166}
2167
2168sub save {
2169 my ($self) = @_;
2170
2171 my $lock = cf::lock_acquire "map_data:$self->{path}";
2172
2173 $self->{last_save} = $cf::RUNTIME;
2174
2175 return unless $self->dirty;
2176
2177 my $save = $self->save_path; utf8::encode $save;
2178 my $uniq = $self->uniq_path; utf8::encode $uniq;
2179
2180 $self->{load_path} = $save;
2181
2182 return if $self->{deny_save};
2183
2184 local $self->{last_access} = $self->last_access;#d#
2185
2186 cf::async {
2187 $Coro::current->{desc} = "map player save";
2188 $_->contr->save for $self->players;
2189 };
2190
2191 cf::get_slot 0.02;
2192
2193 if ($uniq) {
2194 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
2195 $self->_save_objects ($uniq, cf::IO_UNIQUES);
2196 } else {
2197 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
2198 }
2199}
2200
2201sub swap_out {
2202 my ($self) = @_;
2203
2204 # save first because save cedes
2205 $self->save;
2206
2207 my $lock = cf::lock_acquire "map_data:$self->{path}";
2208
2209 return if $self->players;
2210 return if $self->in_memory != cf::MAP_ACTIVE;
2211 return if $self->{deny_save};
2212
2213 $self->in_memory (cf::MAP_SWAPPED);
2214
2215 $self->deactivate;
2216 $_->clear_links_to ($self) for values %cf::MAP;
2217 $self->clear;
2218}
2219
2220sub reset_at {
2221 my ($self) = @_;
2222
2223 # TODO: safety, remove and allow resettable per-player maps
2224 return 1e99 if $self->{deny_reset};
2225
2226 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
2227 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
2228
2229 $time + $to
2230}
2231
2232sub should_reset {
2233 my ($self) = @_;
2234
2235 $self->reset_at <= $cf::RUNTIME
2236}
2237
2238sub reset {
2239 my ($self) = @_;
2240
2241 my $lock = cf::lock_acquire "map_data:$self->{path}";
2242
2243 return if $self->players;
2244
2245 warn "resetting map ", $self->path, "\n";
2246
2247 $self->in_memory (cf::MAP_SWAPPED);
2248
2249 # need to save uniques path
2250 unless ($self->{deny_save}) {
2251 my $uniq = $self->uniq_path; utf8::encode $uniq;
2252
2253 $self->_save_objects ($uniq, cf::IO_UNIQUES)
2254 if $uniq;
2255 }
2256
2257 delete $cf::MAP{$self->path};
2258
2259 $self->deactivate;
2260 $_->clear_links_to ($self) for values %cf::MAP;
2261 $self->clear;
2262
2263 $self->unlink_save;
2264 $self->destroy;
2265}
2266
2267my $nuke_counter = "aaaa";
2268
2269sub nuke {
2270 my ($self) = @_;
2271
2272 {
2273 my $lock = cf::lock_acquire "map_data:$self->{path}";
2274
2275 delete $cf::MAP{$self->path};
2276
2277 $self->unlink_save;
2278
2279 bless $self, "cf::map";
2280 delete $self->{deny_reset};
2281 $self->{deny_save} = 1;
2282 $self->reset_timeout (1);
2283 $self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
2284
2285 $cf::MAP{$self->path} = $self;
2286 }
2287
2288 $self->reset; # polite request, might not happen
2289}
2290
2291=item $maps = cf::map::tmp_maps
2292
2293Returns an arrayref with all map paths of currently instantiated and saved
2294maps. May block.
2295
2296=cut
2297
2298sub tmp_maps() {
2299 [
2300 map {
2301 utf8::decode $_;
2302 /\.map$/
2303 ? normalise $_
2304 : ()
2305 } @{ aio_readdir $TMPDIR or [] }
2306 ]
2307}
2308
2309=item $maps = cf::map::random_maps
2310
2311Returns an arrayref with all map paths of currently instantiated and saved
2312random maps. May block.
2313
2314=cut
2315
2316sub random_maps() {
2317 [
2318 map {
2319 utf8::decode $_;
2320 /\.map$/
2321 ? normalise "?random/$_"
2322 : ()
2323 } @{ aio_readdir $RANDOMDIR or [] }
2324 ]
2325}
2326
2327=item cf::map::unique_maps
2328
2329Returns an arrayref of paths of all shared maps that have
2330instantiated unique items. May block.
2331
2332=cut
2333
2334sub unique_maps() {
2335 [
2336 map {
2337 utf8::decode $_;
2338 s/\.map$//; # TODO future compatibility hack
2339 /\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
2340 ? ()
2341 : normalise $_
2342 } @{ aio_readdir $UNIQUEDIR or [] }
2343 ]
2344}
2345
2346=item cf::map::static_maps
2347
2348Returns an arrayref if paths of all static maps (all preinstalled F<.map>
2349file in the shared directory excluding F</styles> and F</editor>). May
2350block.
2351
2352=cut
2353
2354sub static_maps() {
2355 my @dirs = "";
2356 my @maps;
2357
2358 while (@dirs) {
2359 my $dir = shift @dirs;
2360
2361 next if $dir eq "/styles" || $dir eq "/editor";
2362
2363 my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
2364 or return;
2365
2366 for (@$files) {
2367 s/\.map$// or next;
2368 utf8::decode $_;
2369 push @maps, "$dir/$_";
2370 }
2371
2372 push @dirs, map "$dir/$_", @$dirs;
2373 }
2374
2375 \@maps
2376}
2377
2378=back
2379
2380=head3 cf::object
2381
2382=cut
2383
2384package cf::object;
2385
2386=over 4
2387
2388=item $ob->inv_recursive
2389
2390Returns the inventory of the object I<and> their inventories, recursively,
2391but I<not> the object itself.
2392
2393=cut
2394
2395sub inv_recursive_;
2396sub inv_recursive_ {
2397 map { $_, inv_recursive_ $_->inv } @_
2398}
2399
2400sub inv_recursive {
2401 inv_recursive_ inv $_[0]
2402}
2403
2404=item $ref = $ob->ref
2405
2406Creates and returns a persistent reference to an object that can be stored as a string.
2407
2408=item $ob = cf::object::deref ($refstring)
2409
2410returns the objetc referenced by refstring. may return undef when it cnanot find the object,
2411even if the object actually exists. May block.
2412
2413=cut
2414
2415sub deref {
2416 my ($ref) = @_;
2417
2418 if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
2419 my ($uuid, $name) = ($1, $2);
2420 my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
2421 or return;
2422 $pl->ob->uuid eq $uuid
2423 or return;
2424
2425 $pl->ob
2426 } else {
2427 warn "$ref: cannot resolve object reference\n";
2428 undef
2429 }
2430}
2431
2432package cf;
2433
2434=back
2435
2436=head3 cf::object::player
2437
2438=over 4
2439
2440=item $player_object->reply ($npc, $msg[, $flags])
2441
2442Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
2443can be C<undef>. Does the right thing when the player is currently in a
2444dialogue with the given NPC character.
2445
2446=cut
2447
2448our $SAY_CHANNEL = {
2449 id => "say",
2450 title => "Map",
2451 reply => "say ",
2452 tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
2453};
2454
2455our $CHAT_CHANNEL = {
2456 id => "chat",
2457 title => "Chat",
2458 reply => "chat ",
2459 tooltip => "Player chat and shouts, global to the server.",
2460};
2461
2462# rough implementation of a future "reply" method that works
2463# with dialog boxes.
2464#TODO: the first argument must go, split into a $npc->reply_to ( method
2465sub cf::object::player::reply($$$;$) {
2466 my ($self, $npc, $msg, $flags) = @_;
2467
2468 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
2469
2470 if ($self->{record_replies}) {
2471 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
2472
2473 } else {
2474 my $pl = $self->contr;
2475
2476 if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
2477 my $dialog = $pl->{npc_dialog};
2478 $dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
2479
2480 } else {
2481 $msg = $npc->name . " says: $msg" if $npc;
2482 $self->send_msg ($SAY_CHANNEL => $msg, $flags);
2483 }
2484 }
2485}
2486
2487=item $object->send_msg ($channel, $msg, $color, [extra...])
2488
2489=cut
2490
2491sub cf::object::send_msg {
2492 my $pl = shift->contr
2493 or return;
2494 $pl->send_msg (@_);
2495}
2496
2497=item $player_object->may ("access")
2498
2499Returns wether the given player is authorized to access resource "access"
2500(e.g. "command_wizcast").
2501
2502=cut
2503
2504sub cf::object::player::may {
31 my ($prefix, $class) = @_; 2505 my ($self, $access) = @_;
32 2506
2507 $self->flag (cf::FLAG_WIZ) ||
2508 (ref $cf::CFG{"may_$access"}
2509 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
2510 : $cf::CFG{"may_$access"})
2511}
2512
2513=item $player_object->enter_link
2514
2515Freezes the player and moves him/her to a special map (C<{link}>).
2516
2517The player should be reasonably safe there for short amounts of time (e.g.
2518for loading a map). You I<MUST> call C<leave_link> as soon as possible,
2519though, as the palyer cannot control the character while it is on the link
2520map.
2521
2522Will never block.
2523
2524=item $player_object->leave_link ($map, $x, $y)
2525
2526Moves the player out of the special C<{link}> map onto the specified
2527map. If the map is not valid (or omitted), the player will be moved back
2528to the location he/she was before the call to C<enter_link>, or, if that
2529fails, to the emergency map position.
2530
2531Might block.
2532
2533=cut
2534
2535sub link_map {
2536 unless ($LINK_MAP) {
2537 $LINK_MAP = cf::map::find "{link}"
2538 or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
2539 $LINK_MAP->load;
2540 }
2541
2542 $LINK_MAP
2543}
2544
2545sub cf::object::player::enter_link {
2546 my ($self) = @_;
2547
2548 $self->deactivate_recursive;
2549
2550 return if UNIVERSAL::isa $self->map, "ext::map_link";
2551
2552 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
2553 if $self->map && $self->map->{path} ne "{link}";
2554
2555 $self->enter_map ($LINK_MAP || link_map, 10, 10);
2556}
2557
2558sub cf::object::player::leave_link {
2559 my ($self, $map, $x, $y) = @_;
2560
2561 return unless $self->contr->active;
2562
2563 my $link_pos = delete $self->{_link_pos};
2564
2565 unless ($map) {
2566 # restore original map position
2567 ($map, $x, $y) = @{ $link_pos || [] };
2568 $map = cf::map::find $map;
2569
2570 unless ($map) {
2571 ($map, $x, $y) = @$EMERGENCY_POSITION;
2572 $map = cf::map::find $map
2573 or die "FATAL: cannot load emergency map\n";
2574 }
2575 }
2576
2577 ($x, $y) = (-1, -1)
2578 unless (defined $x) && (defined $y);
2579
2580 # use -1 or undef as default coordinates, not 0, 0
2581 ($x, $y) = ($map->enter_x, $map->enter_y)
2582 if $x <= 0 && $y <= 0;
2583
2584 $map->load;
2585 $map->load_neighbours;
2586
2587 return unless $self->contr->active;
2588
2589 local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
2590 $self->enter_map ($map, $x, $y);
2591
2592 # only activate afterwards, to support waiting in hooks
2593 $self->activate_recursive;
2594}
2595
2596=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
2597
2598Moves the player to the given map-path and coordinates by first freezing
2599her, loading and preparing them map, calling the provided $check callback
2600that has to return the map if sucecssful, and then unfreezes the player on
2601the new (success) or old (failed) map position. In either case, $done will
2602be called at the end of this process.
2603
2604Note that $check will be called with a potentially non-loaded map, so if
2605it needs a loaded map it has to call C<< ->load >>.
2606
2607=cut
2608
2609our $GOTOGEN;
2610
2611sub cf::object::player::goto {
2612 my ($self, $path, $x, $y, $check, $done) = @_;
2613
2614 # do generation counting so two concurrent goto's will be executed in-order
2615 my $gen = $self->{_goto_generation} = ++$GOTOGEN;
2616
2617 $self->enter_link;
2618
2619 (async {
2620 $Coro::current->{desc} = "player::goto $path $x $y";
2621
2622 # *tag paths override both path and x|y
2623 if ($path =~ /^\*(.*)$/) {
2624 if (my @obs = grep $_->map, ext::map_tags::find $1) {
2625 my $ob = $obs[rand @obs];
2626
2627 # see if we actually can go there
2628 if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
2629 $ob = $obs[rand @obs];
2630 } else {
2631 $self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
2632 }
2633 # else put us there anyways for now #d#
2634
2635 ($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
2636 } else {
2637 ($path, $x, $y) = (undef, undef, undef);
2638 }
2639 }
2640
2641 my $map = eval {
2642 my $map = defined $path ? cf::map::find $path : undef;
2643
2644 if ($map) {
2645 $map = $map->customise_for ($self);
2646 $map = $check->($map) if $check && $map;
2647 } else {
2648 $self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
2649 }
2650
2651 $map
2652 };
2653
2654 if ($@) {
2655 $self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
2656 LOG llevError | logBacktrace, Carp::longmess $@;
2657 }
2658
2659 if ($gen == $self->{_goto_generation}) {
2660 delete $self->{_goto_generation};
2661 $self->leave_link ($map, $x, $y);
2662 }
2663
2664 $done->() if $done;
2665 })->prio (1);
2666}
2667
2668=item $player_object->enter_exit ($exit_object)
2669
2670=cut
2671
2672sub parse_random_map_params {
2673 my ($spec) = @_;
2674
2675 my $rmp = { # defaults
2676 xsize => (cf::rndm 15, 40),
2677 ysize => (cf::rndm 15, 40),
2678 symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
2679 #layout => string,
2680 };
2681
2682 for (split /\n/, $spec) {
2683 my ($k, $v) = split /\s+/, $_, 2;
2684
2685 $rmp->{lc $k} = $v if (length $k) && (length $v);
2686 }
2687
2688 $rmp
2689}
2690
2691sub prepare_random_map {
2692 my ($exit) = @_;
2693
2694 # all this does is basically replace the /! path by
2695 # a new random map path (?random/...) with a seed
2696 # that depends on the exit object
2697
2698 my $rmp = parse_random_map_params $exit->msg;
2699
2700 if ($exit->map) {
2701 $rmp->{region} = $exit->region->name;
2702 $rmp->{origin_map} = $exit->map->path;
2703 $rmp->{origin_x} = $exit->x;
2704 $rmp->{origin_y} = $exit->y;
2705
2706 $exit->map->touch;
2707 }
2708
2709 $rmp->{random_seed} ||= $exit->random_seed;
2710
2711 my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
2712 my $md5 = Digest::MD5::md5_hex $data;
2713 my $meta = "$RANDOMDIR/$md5.meta";
2714
2715 if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
2716 aio_write $fh, 0, (length $data), $data, 0;
2717 undef $fh;
2718 aio_rename "$meta~", $meta;
2719
2720 my $slaying = "?random/$md5";
2721
2722 if ($exit->valid) {
2723 $exit->slaying ("?random/$md5");
2724 $exit->msg (undef);
2725 }
2726 }
2727}
2728
2729sub cf::object::player::enter_exit {
2730 my ($self, $exit) = @_;
2731
2732 return unless $self->type == cf::PLAYER;
2733
2734 $self->enter_link;
2735
2736 (async {
2737 $Coro::current->{desc} = "enter_exit";
2738
2739 unless (eval {
2740 $self->deactivate_recursive; # just to be sure
2741
2742 # random map handling
2743 {
2744 my $guard = cf::lock_acquire "exit_prepare:$exit";
2745
2746 prepare_random_map $exit
2747 if $exit->slaying eq "/!";
2748 }
2749
2750 my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
2751 my $x = $exit->stats->hp;
2752 my $y = $exit->stats->sp;
2753
2754 $self->goto ($map, $x, $y);
2755
2756 # if exit is damned, update players death & WoR home-position
2757 $self->contr->savebed ($map, $x, $y)
2758 if $exit->flag (cf::FLAG_DAMNED);
2759
2760 1
2761 }) {
2762 $self->message ("Something went wrong deep within the deliantra server. "
2763 . "I'll try to bring you back to the map you were before. "
2764 . "Please report this to the dungeon master!",
2765 cf::NDI_UNIQUE | cf::NDI_RED);
2766
2767 warn "ERROR in enter_exit: $@";
2768 $self->leave_link;
2769 }
2770 })->prio (1);
2771}
2772
2773=head3 cf::client
2774
2775=over 4
2776
2777=item $client->send_drawinfo ($text, $flags)
2778
2779Sends a drawinfo packet to the client. Circumvents output buffering so
2780should not be used under normal circumstances.
2781
2782=cut
2783
2784sub cf::client::send_drawinfo {
2785 my ($self, $text, $flags) = @_;
2786
2787 utf8::encode $text;
2788 $self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2789}
2790
2791=item $client->send_big_packet ($pkt)
2792
2793Like C<send_packet>, but tries to compress large packets, and fragments
2794them as required.
2795
2796=cut
2797
2798our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
2799
2800sub cf::client::send_big_packet {
2801 my ($self, $pkt) = @_;
2802
2803 # try lzf for large packets
2804 $pkt = "lzf " . Compress::LZF::compress $pkt
2805 if 1024 <= length $pkt and $self->{can_lzf};
2806
2807 # split very large packets
2808 if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
2809 $self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
2810 $pkt = "frag";
2811 }
2812
2813 $self->send_packet ($pkt);
2814}
2815
2816=item $client->send_msg ($channel, $msg, $color, [extra...])
2817
2818Send a drawinfo or msg packet to the client, formatting the msg for the
2819client if neccessary. C<$type> should be a string identifying the type of
2820the message, with C<log> being the default. If C<$color> is negative, suppress
2821the message unless the client supports the msg packet.
2822
2823=cut
2824
2825# non-persistent channels (usually the info channel)
2826our %CHANNEL = (
2827 "c/motd" => {
2828 id => "infobox",
2829 title => "MOTD",
2830 reply => undef,
2831 tooltip => "The message of the day",
2832 },
2833 "c/identify" => {
2834 id => "infobox",
2835 title => "Identify",
2836 reply => undef,
2837 tooltip => "Items recently identified",
2838 },
2839 "c/examine" => {
2840 id => "infobox",
2841 title => "Examine",
2842 reply => undef,
2843 tooltip => "Signs and other items you examined",
2844 },
2845 "c/shopinfo" => {
2846 id => "infobox",
2847 title => "Shop Info",
2848 reply => undef,
2849 tooltip => "What your bargaining skill tells you about the shop",
2850 },
2851 "c/book" => {
2852 id => "infobox",
2853 title => "Book",
2854 reply => undef,
2855 tooltip => "The contents of a note or book",
2856 },
2857 "c/lookat" => {
2858 id => "infobox",
2859 title => "Look",
2860 reply => undef,
2861 tooltip => "What you saw there",
2862 },
2863 "c/who" => {
2864 id => "infobox",
2865 title => "Players",
2866 reply => undef,
2867 tooltip => "Shows players who are currently online",
2868 },
2869 "c/body" => {
2870 id => "infobox",
2871 title => "Body Parts",
2872 reply => undef,
2873 tooltip => "Shows which body parts you posess and are available",
2874 },
2875 "c/statistics" => {
2876 id => "infobox",
2877 title => "Statistics",
2878 reply => undef,
2879 tooltip => "Shows your primary statistics",
2880 },
2881 "c/skills" => {
2882 id => "infobox",
2883 title => "Skills",
2884 reply => undef,
2885 tooltip => "Shows your experience per skill and item power",
2886 },
2887 "c/shopitems" => {
2888 id => "infobox",
2889 title => "Shop Items",
2890 reply => undef,
2891 tooltip => "Shows the items currently for sale in this shop",
2892 },
2893 "c/resistances" => {
2894 id => "infobox",
2895 title => "Resistances",
2896 reply => undef,
2897 tooltip => "Shows your resistances",
2898 },
2899 "c/pets" => {
2900 id => "infobox",
2901 title => "Pets",
2902 reply => undef,
2903 tooltip => "Shows information abotu your pets/a specific pet",
2904 },
2905 "c/perceiveself" => {
2906 id => "infobox",
2907 title => "Perceive Self",
2908 reply => undef,
2909 tooltip => "You gained detailed knowledge about yourself",
2910 },
2911 "c/uptime" => {
2912 id => "infobox",
2913 title => "Uptime",
2914 reply => undef,
2915 tooltip => "How long the server has been running since last restart",
2916 },
2917 "c/mapinfo" => {
2918 id => "infobox",
2919 title => "Map Info",
2920 reply => undef,
2921 tooltip => "Information related to the maps",
2922 },
2923 "c/party" => {
2924 id => "party",
2925 title => "Party",
2926 reply => "gsay ",
2927 tooltip => "Messages and chat related to your party",
2928 },
2929 "c/death" => {
2930 id => "death",
2931 title => "Death",
2932 reply => undef,
2933 tooltip => "Reason for and more info about your most recent death",
2934 },
2935 "c/say" => $SAY_CHANNEL,
2936 "c/chat" => $CHAT_CHANNEL,
2937);
2938
2939sub cf::client::send_msg {
2940 my ($self, $channel, $msg, $color, @extra) = @_;
2941
2942 $msg = $self->pl->expand_cfpod ($msg)
2943 unless $color & cf::NDI_VERBATIM;
2944
2945 $color &= cf::NDI_CLIENT_MASK; # just in case...
2946
2947 # check predefined channels, for the benefit of C
2948 if ($CHANNEL{$channel}) {
2949 $channel = $CHANNEL{$channel};
2950
2951 $self->ext_msg (channel_info => $channel);
2952 $channel = $channel->{id};
2953
2954 } elsif (ref $channel) {
2955 # send meta info to client, if not yet sent
2956 unless (exists $self->{channel}{$channel->{id}}) {
2957 $self->{channel}{$channel->{id}} = $channel;
2958 $self->ext_msg (channel_info => $channel);
2959 }
2960
2961 $channel = $channel->{id};
2962 }
2963
2964 return unless @extra || length $msg;
2965
2966 # default colour, mask it out
2967 $color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
2968 if $color & cf::NDI_DEF;
2969
2970 my $pkt = "msg "
2971 . $self->{json_coder}->encode (
2972 [$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
2973 );
2974
2975 $self->send_big_packet ($pkt);
2976}
2977
2978=item $client->ext_msg ($type, @msg)
2979
2980Sends an ext event to the client.
2981
2982=cut
2983
2984sub cf::client::ext_msg($$@) {
2985 my ($self, $type, @msg) = @_;
2986
2987 if ($self->extcmd == 2) {
2988 $self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
2989 } elsif ($self->extcmd == 1) { # TODO: remove
2990 push @msg, msgtype => "event_$type";
2991 $self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
2992 }
2993}
2994
2995=item $client->ext_reply ($msgid, @msg)
2996
2997Sends an ext reply to the client.
2998
2999=cut
3000
3001sub cf::client::ext_reply($$@) {
3002 my ($self, $id, @msg) = @_;
3003
3004 if ($self->extcmd == 2) {
3005 $self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
3006 } elsif ($self->extcmd == 1) {
3007 #TODO: version 1, remove
3008 unshift @msg, msgtype => "reply", msgid => $id;
3009 $self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
3010 }
3011}
3012
3013=item $success = $client->query ($flags, "text", \&cb)
3014
3015Queues a query to the client, calling the given callback with
3016the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
3017C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
3018
3019Queries can fail, so check the return code. Or don't, as queries will
3020become reliable at some point in the future.
3021
3022=cut
3023
3024sub cf::client::query {
3025 my ($self, $flags, $text, $cb) = @_;
3026
3027 return unless $self->state == ST_PLAYING
3028 || $self->state == ST_SETUP
3029 || $self->state == ST_CUSTOM;
3030
3031 $self->state (ST_CUSTOM);
3032
3033 utf8::encode $text;
3034 push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
3035
3036 $self->send_packet ($self->{query_queue}[0][0])
3037 if @{ $self->{query_queue} } == 1;
3038
3039 1
3040}
3041
3042cf::client->attach (
3043 on_connect => sub {
3044 my ($ns) = @_;
3045
3046 $ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
3047 },
3048 on_reply => sub {
3049 my ($ns, $msg) = @_;
3050
3051 # this weird shuffling is so that direct followup queries
3052 # get handled first
3053 my $queue = delete $ns->{query_queue}
3054 or return; # be conservative, not sure how that can happen, but we saw a crash here
3055
3056 (shift @$queue)->[1]->($msg);
3057 return unless $ns->valid; # temporary(?) workaround for callback destroying socket
3058
3059 push @{ $ns->{query_queue} }, @$queue;
3060
3061 if (@{ $ns->{query_queue} } == @$queue) {
3062 if (@$queue) {
3063 $ns->send_packet ($ns->{query_queue}[0][0]);
3064 } else {
3065 $ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
3066 }
3067 }
3068 },
3069 on_exticmd => sub {
3070 my ($ns, $buf) = @_;
3071
3072 my $msg = eval { $ns->{json_coder}->decode ($buf) };
3073
3074 if (ref $msg) {
3075 my ($type, $reply, @payload) =
3076 "ARRAY" eq ref $msg
3077 ? @$msg
3078 : ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
3079
3080 my @reply;
3081
3082 if (my $cb = $EXTICMD{$type}) {
3083 @reply = $cb->($ns, @payload);
3084 }
3085
3086 $ns->ext_reply ($reply, @reply)
3087 if $reply;
3088
3089 } else {
3090 warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
3091 }
3092
3093 cf::override;
3094 },
3095);
3096
3097=item $client->async (\&cb)
3098
3099Create a new coroutine, running the specified callback. The coroutine will
3100be automatically cancelled when the client gets destroyed (e.g. on logout,
3101or loss of connection).
3102
3103=cut
3104
3105sub cf::client::async {
3106 my ($self, $cb) = @_;
3107
3108 my $coro = &Coro::async ($cb);
3109
3110 $coro->on_destroy (sub {
3111 delete $self->{_coro}{$coro+0};
3112 });
3113
3114 $self->{_coro}{$coro+0} = $coro;
3115
3116 $coro
3117}
3118
3119cf::client->attach (
3120 on_destroy => sub {
3121 my ($ns) = @_;
3122
3123 $_->cancel for values %{ (delete $ns->{_coro}) || {} };
3124 },
3125);
3126
3127=back
3128
3129
3130=head2 SAFE SCRIPTING
3131
3132Functions that provide a safe environment to compile and execute
3133snippets of perl code without them endangering the safety of the server
3134itself. Looping constructs, I/O operators and other built-in functionality
3135is not available in the safe scripting environment, and the number of
3136functions and methods that can be called is greatly reduced.
3137
3138=cut
3139
3140our $safe = new Safe "safe";
3141our $safe_hole = new Safe::Hole;
3142
3143$SIG{FPE} = 'IGNORE';
3144
3145$safe->permit_only (Opcode::opset qw(
3146 :base_core :base_mem :base_orig :base_math :base_loop
3147 grepstart grepwhile mapstart mapwhile
3148 sort time
3149));
3150
3151# here we export the classes and methods available to script code
3152
3153=pod
3154
3155The following functions and methods are available within a safe environment:
3156
3157 cf::object
3158 contr pay_amount pay_player map x y force_find force_add destroy
3159 insert remove name archname title slaying race decrease split
3160 value
3161
3162 cf::object::player
3163 player
3164
3165 cf::player
3166 peaceful
3167
3168 cf::map
3169 trigger
3170
3171=cut
3172
3173for (
3174 ["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
3175 insert remove inv nrof name archname title slaying race
3176 decrease split destroy change_exp value msg lore send_msg)],
3177 ["cf::object::player" => qw(player)],
3178 ["cf::player" => qw(peaceful send_msg)],
3179 ["cf::map" => qw(trigger)],
3180) {
33 no strict 'refs'; 3181 no strict 'refs';
3182 my ($pkg, @funs) = @$_;
3183 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
3184 for @funs;
3185}
34 3186
35 for my $prop (keys %PROP_TYPE) { 3187=over 4
36 $prop =~ /^\Q$prefix\E_(.*$)/ or next;
37 my $sub = lc $1;
38 3188
39 my $type = $PROP_TYPE{$prop}; 3189=item @retval = safe_eval $code, [var => value, ...]
40 my $idx = $PROP_IDX {$prop};
41 3190
42 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub { 3191Compiled and executes the given perl code snippet. additional var/value
43 $_[0]->get_property ($type, $idx) 3192pairs result in temporary local (my) scalar variables of the given name
3193that are available in the code snippet. Example:
3194
3195 my $five = safe_eval '$first + $second', first => 1, second => 4;
3196
3197=cut
3198
3199sub safe_eval($;@) {
3200 my ($code, %vars) = @_;
3201
3202 my $qcode = $code;
3203 $qcode =~ s/"/‟/g; # not allowed in #line filenames
3204 $qcode =~ s/\n/\\n/g;
3205
3206 %vars = (_dummy => 0) unless %vars;
3207
3208 local $_;
3209 local @safe::cf::_safe_eval_args = values %vars;
3210
3211 my $eval =
3212 "do {\n"
3213 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
3214 . "#line 0 \"{$qcode}\"\n"
3215 . $code
3216 . "\n}"
3217 ;
3218
3219 sub_generation_inc;
3220 my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
3221 sub_generation_inc;
3222
3223 if ($@) {
3224 warn "$@";
3225 warn "while executing safe code '$code'\n";
3226 warn "with arguments " . (join " ", %vars) . "\n";
3227 }
3228
3229 wantarray ? @res : $res[0]
3230}
3231
3232=item cf::register_script_function $function => $cb
3233
3234Register a function that can be called from within map/npc scripts. The
3235function should be reasonably secure and should be put into a package name
3236like the extension.
3237
3238Example: register a function that gets called whenever a map script calls
3239C<rent::overview>, as used by the C<rent> extension.
3240
3241 cf::register_script_function "rent::overview" => sub {
3242 ...
3243 };
3244
3245=cut
3246
3247sub register_script_function {
3248 my ($fun, $cb) = @_;
3249
3250 no strict 'refs';
3251 *{"safe::$fun"} = $safe_hole->wrap ($cb);
3252}
3253
3254=back
3255
3256=cut
3257
3258#############################################################################
3259# the server's init and main functions
3260
3261sub load_facedata($) {
3262 my ($path) = @_;
3263
3264 # HACK to clear player env face cache, we need some signal framework
3265 # for this (global event?)
3266 %ext::player_env::MUSIC_FACE_CACHE = ();
3267
3268 my $enc = JSON::XS->new->utf8->canonical->relaxed;
3269
3270 warn "loading facedata from $path\n";
3271
3272 my $facedata;
3273 0 < aio_load $path, $facedata
3274 or die "$path: $!";
3275
3276 $facedata = Coro::Storable::thaw $facedata;
3277
3278 $facedata->{version} == 2
3279 or cf::cleanup "$path: version mismatch, cannot proceed.";
3280
3281 # patch in the exptable
3282 $facedata->{resource}{"res/exp_table"} = {
3283 type => FT_RSRC,
3284 data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
3285 };
3286 cf::cede_to_tick;
3287
3288 {
3289 my $faces = $facedata->{faceinfo};
3290
3291 while (my ($face, $info) = each %$faces) {
3292 my $idx = (cf::face::find $face) || cf::face::alloc $face;
3293
3294 cf::face::set_visibility $idx, $info->{visibility};
3295 cf::face::set_magicmap $idx, $info->{magicmap};
3296 cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
3297 cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
3298
3299 cf::cede_to_tick;
44 }; 3300 }
45 3301
46 *{"$class\::set_$sub"} = sub { 3302 while (my ($face, $info) = each %$faces) {
47 $_[0]->set_property ($type, $idx, $_[1]); 3303 next unless $info->{smooth};
48 } unless $ignore_set{$prop}; 3304
3305 my $idx = cf::face::find $face
3306 or next;
3307
3308 if (my $smooth = cf::face::find $info->{smooth}) {
3309 cf::face::set_smooth $idx, $smooth;
3310 cf::face::set_smoothlevel $idx, $info->{smoothlevel};
3311 } else {
3312 warn "smooth face '$info->{smooth}' not found for face '$face'";
3313 }
3314
3315 cf::cede_to_tick;
3316 }
3317 }
3318
49 } 3319 {
50} 3320 my $anims = $facedata->{animinfo};
51 3321
52# auto-generate most of the API 3322 while (my ($anim, $info) = each %$anims) {
3323 cf::anim::set $anim, $info->{frames}, $info->{facings};
3324 cf::cede_to_tick;
3325 }
53 3326
54prop_gen OBJECT_PROP => "cf::object"; 3327 cf::anim::invalidate_all; # d'oh
55# CFAPI_OBJECT_ANIMATION? 3328 }
56prop_gen PLAYER_PROP => "cf::object::player";
57 3329
58prop_gen MAP_PROP => "cf::map"; 3330 {
59prop_gen ARCH_PROP => "cf::arch"; 3331 my $res = $facedata->{resource};
60 3332
61# guessed hierarchies 3333 while (my ($name, $info) = each %$res) {
3334 if (defined $info->{type}) {
3335 my $idx = (cf::face::find $name) || cf::face::alloc $name;
62 3336
63@cf::object::player::ISA = 'cf::object'; 3337 cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
64@cf::object::map::ISA = 'cf::object'; 3338 cf::face::set_type $idx, $info->{type};
3339 } else {
3340 $RESOURCE{$name} = $info;
3341 }
65 3342
66my %ext_pkg; 3343 cf::cede_to_tick;
67my @exts; 3344 }
68my @hook; 3345 }
69my %command;
70 3346
71sub inject_event { 3347 cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
72 my $extension = shift;
73 my $event_code = shift;
74 3348
75 my $cb = $hook[$event_code]{$extension} 3349 1
3350}
3351
3352cf::global->attach (on_resource_update => sub {
3353 if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
3354 $soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
3355
3356 for (0 .. SOUND_CAST_SPELL_0 - 1) {
3357 my $sound = $soundconf->{compat}[$_]
3358 or next;
3359
3360 my $face = cf::face::find "sound/$sound->[1]";
3361 cf::sound::set $sound->[0] => $face;
3362 cf::sound::old_sound_index $_, $face; # gcfclient-compat
3363 }
3364
3365 while (my ($k, $v) = each %{$soundconf->{event}}) {
3366 my $face = cf::face::find "sound/$v";
3367 cf::sound::set $k => $face;
3368 }
3369 }
3370});
3371
3372register_exticmd fx_want => sub {
3373 my ($ns, $want) = @_;
3374
3375 while (my ($k, $v) = each %$want) {
3376 $ns->fx_want ($k, $v);
3377 }
3378};
3379
3380sub load_resource_file($) {
3381 my $guard = lock_acquire "load_resource_file";
3382
3383 my $status = load_resource_file_ $_[0];
3384 get_slot 0.1, 100;
3385 cf::arch::commit_load;
3386
3387 $status
3388}
3389
3390sub reload_regions {
3391 # HACK to clear player env face cache, we need some signal framework
3392 # for this (global event?)
3393 %ext::player_env::MUSIC_FACE_CACHE = ();
3394
3395 load_resource_file "$MAPDIR/regions"
3396 or die "unable to load regions file\n";
3397
3398 for (cf::region::list) {
3399 $_->{match} = qr/$_->{match}/
3400 if exists $_->{match};
3401 }
3402}
3403
3404sub reload_facedata {
3405 load_facedata "$DATADIR/facedata"
3406 or die "unable to load facedata\n";
3407}
3408
3409sub reload_archetypes {
3410 load_resource_file "$DATADIR/archetypes"
3411 or die "unable to load archetypes\n";
3412}
3413
3414sub reload_treasures {
3415 load_resource_file "$DATADIR/treasures"
3416 or die "unable to load treasurelists\n";
3417}
3418
3419sub reload_resources {
3420 warn "reloading resource files...\n";
3421
3422 reload_facedata;
3423 reload_archetypes;
3424 reload_regions;
3425 reload_treasures;
3426
3427 warn "finished reloading resource files\n";
3428}
3429
3430sub reload_config {
3431 warn "reloading config file...\n";
3432
3433 open my $fh, "<:utf8", "$CONFDIR/config"
76 or return; 3434 or return;
77 3435
78 &$cb 3436 local $/;
79} 3437 *CFG = YAML::XS::Load scalar <$fh>;
80 3438
81sub inject_global_event { 3439 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
82 my $event = shift;
83 3440
84 my $cb = $hook[$event] 3441 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
85 or return; 3442 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
86 3443
87 List::Util::max map &$_, values %$cb 3444 if (exists $CFG{mlockall}) {
88}
89
90sub inject_command {
91 my ($name, $obj, $params) = @_;
92
93 for my $cmd (@{ $command{$name} }) {
94 $cmd->[1]->($obj, $params);
95 }
96
97 -1
98}
99
100sub register_command {
101 my ($name, $time, $cb) = @_;
102
103 my $caller = caller;
104
105 warn "registering command '$name/$time' to '$caller'";
106
107 push @{ $command{$name} }, [$time, $cb, $caller];
108 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
109}
110
111sub register {
112 my ($base, $pkg) = @_;
113
114 for my $idx (0 .. $#EVENT) {
115 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
116 warn "registering $EVENT[$idx] hook to '$pkg'\n";
117 $hook[$idx]{$base} = $ref;
118 }
119 }
120}
121
122sub load_extension {
123 my ($path) = @_;
124
125 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
126 my $base = $1;
127 my $pkg = $1;
128 $pkg =~ s/[^[:word:]]/_/g;
129 $pkg = "cf::ext::$pkg";
130
131 warn "loading '$path' into '$pkg'\n";
132
133 open my $fh, "<:utf8", $path
134 or die "$path: $!";
135
136 my $source =
137 "package $pkg; use strict; use utf8;\n"
138 . "#line 1 \"$path\"\n{\n"
139 . (do { local $/; <$fh> })
140 . "\n};\n1";
141
142 eval $source
143 or die "$path: $@";
144
145 push @exts, $pkg;
146 $ext_pkg{$base} = $pkg;
147
148# no strict 'refs';
149# @{"$pkg\::ISA"} = cf::ext::;
150
151 register $base, $pkg;
152}
153
154sub unload_extension {
155 my ($pkg) = @_;
156
157 warn "removing extension $pkg\n";
158
159 # remove hooks
160 for my $idx (0 .. $#EVENT) {
161 delete $hook[$idx]{$pkg};
162 }
163
164 # remove commands
165 for my $name (keys %command) {
166 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
167
168 if (@cb) {
169 $command{$name} = \@cb;
170 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
171 } else {
172 delete $command{$name};
173 delete $COMMAND{"$name\000"};
174 }
175 }
176
177 Symbol::delete_package $pkg;
178}
179
180sub load_extensions {
181 my $LIBDIR = maps_directory "perl";
182
183 for my $ext (<$LIBDIR/*.ext>) {
184 next unless -r $ext;
185 eval { 3445 eval {
186 load_extension $ext; 3446 $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
187 1 3447 and die "WARNING: m(un)lockall failed: $!\n";
188 } or warn "$ext not loaded: $@";
189 }
190}
191
192register_command "perl-reload", 0, sub {
193 my ($who, $arg) = @_;
194
195 if ($who->flag (FLAG_WIZ)) {
196 $who->message ("reloading...");
197
198 warn "reloading...\n";
199 eval {
200 unload_extension $_ for @exts;
201 delete $INC{"cf.pm"};
202
203 # don't, removes xs symbols, too
204 #Symbol::delete_package $pkg;
205
206 require cf;
207 }; 3448 };
208 warn $@ if $@; 3449 warn $@ if $@;
209 $who->message ($@) if $@; 3450 }
3451
3452 warn "finished reloading resource files\n";
3453}
3454
3455sub pidfile() {
3456 sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
3457 or die "$PIDFILE: $!";
3458 flock $fh, &Fcntl::LOCK_EX
3459 or die "$PIDFILE: flock: $!";
3460 $fh
3461}
3462
3463# make sure only one server instance is running at any one time
3464sub atomic {
3465 my $fh = pidfile;
3466
3467 my $pid = <$fh>;
3468 kill 9, $pid if $pid > 0;
3469
3470 seek $fh, 0, 0;
3471 print $fh $$;
3472}
3473
3474sub main_loop {
3475 warn "EV::loop starting\n";
3476 if (1) {
3477 EV::loop;
3478 }
3479 warn "EV::loop returned\n";
3480 goto &main_loop unless $REALLY_UNLOOP;
3481}
3482
3483sub main {
3484 cf::init_globals; # initialise logging
3485
3486 LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
3487 LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
3488 LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
3489 LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
3490
3491 cf::init_experience;
3492 cf::init_anim;
3493 cf::init_attackmess;
3494 cf::init_dynamic;
3495
3496 $Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
3497
3498 # we must not ever block the main coroutine
3499 local $Coro::idle = sub {
3500 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
3501 (async {
3502 $Coro::current->{desc} = "IDLE BUG HANDLER";
3503 EV::loop EV::LOOP_ONESHOT;
3504 })->prio (Coro::PRIO_MAX);
3505 };
3506
3507 evthread_start IO::AIO::poll_fileno;
3508
3509 cf::sync_job {
3510 cf::load_settings;
3511 cf::load_materials;
3512
3513 reload_resources;
3514 reload_config;
3515 db_init;
3516
3517 cf::init_uuid;
3518 cf::init_signals;
3519 cf::init_commands;
3520 cf::init_skills;
3521
3522 cf::init_beforeplay;
3523
3524 atomic;
3525
3526 load_extensions;
3527
3528 utime time, time, $RUNTIMEFILE;
3529
3530 # no (long-running) fork's whatsoever before this point(!)
3531 use POSIX ();
3532 POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
3533
3534 (pop @POST_INIT)->(0) while @POST_INIT;
3535 };
3536
3537 main_loop;
3538}
3539
3540#############################################################################
3541# initialisation and cleanup
3542
3543# install some emergency cleanup handlers
3544BEGIN {
3545 our %SIGWATCHER = ();
3546 for my $signal (qw(INT HUP TERM)) {
3547 $SIGWATCHER{$signal} = EV::signal $signal, sub {
3548 cf::cleanup "SIG$signal";
3549 };
3550 }
3551}
3552
3553sub write_runtime_sync {
3554 # first touch the runtime file to show we are still running:
3555 # the fsync below can take a very very long time.
3556
3557 IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
3558
3559 my $guard = cf::lock_acquire "write_runtime";
3560
3561 my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
3562 or return;
3563
3564 my $value = $cf::RUNTIME + 90 + 10;
3565 # 10 is the runtime save interval, for a monotonic clock
3566 # 60 allows for the watchdog to kill the server.
3567
3568 (aio_write $fh, 0, (length $value), $value, 0) <= 0
3569 and return;
3570
3571 # always fsync - this file is important
3572 aio_fsync $fh
3573 and return;
3574
3575 # touch it again to show we are up-to-date
3576 aio_utime $fh, undef, undef;
3577
3578 close $fh
3579 or return;
3580
3581 aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
3582 and return;
3583
3584 warn "runtime file written.\n";
3585
3586 1
3587}
3588
3589our $uuid_lock;
3590our $uuid_skip;
3591
3592sub write_uuid_sync($) {
3593 $uuid_skip ||= $_[0];
3594
3595 return if $uuid_lock;
3596 local $uuid_lock = 1;
3597
3598 my $uuid = "$LOCALDIR/uuid";
3599
3600 my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
3601 or return;
3602
3603 my $value = uuid_seq uuid_cur;
3604
3605 unless ($value) {
3606 warn "cowardly refusing to write zero uuid value!\n";
3607 return;
3608 }
3609
3610 my $value = uuid_str $value + $uuid_skip;
3611 $uuid_skip = 0;
3612
3613 (aio_write $fh, 0, (length $value), $value, 0) <= 0
3614 and return;
3615
3616 # always fsync - this file is important
3617 aio_fsync $fh
3618 and return;
3619
3620 close $fh
3621 or return;
3622
3623 aio_rename "$uuid~", $uuid
3624 and return;
3625
3626 warn "uuid file written ($value).\n";
3627
3628 1
3629
3630}
3631
3632sub write_uuid($$) {
3633 my ($skip, $sync) = @_;
3634
3635 $sync ? write_uuid_sync $skip
3636 : async { write_uuid_sync $skip };
3637}
3638
3639sub emergency_save() {
3640 my $freeze_guard = cf::freeze_mainloop;
3641
3642 warn "emergency_perl_save: enter\n";
3643
3644 cf::sync_job {
3645 # this is a trade-off: we want to be very quick here, so
3646 # save all maps without fsync, and later call a global sync
3647 # (which in turn might be very very slow)
3648 local $USE_FSYNC = 0;
3649
3650 # use a peculiar iteration method to avoid tripping on perl
3651 # refcount bugs in for. also avoids problems with players
3652 # and maps saved/destroyed asynchronously.
3653 warn "emergency_perl_save: begin player save\n";
3654 for my $login (keys %cf::PLAYER) {
3655 my $pl = $cf::PLAYER{$login} or next;
3656 $pl->valid or next;
3657 delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
3658 $pl->save;
3659 }
3660 warn "emergency_perl_save: end player save\n";
3661
3662 warn "emergency_perl_save: begin map save\n";
3663 for my $path (keys %cf::MAP) {
3664 my $map = $cf::MAP{$path} or next;
3665 $map->valid or next;
3666 $map->save;
3667 }
3668 warn "emergency_perl_save: end map save\n";
3669
3670 warn "emergency_perl_save: begin database checkpoint\n";
3671 BDB::db_env_txn_checkpoint $DB_ENV;
3672 warn "emergency_perl_save: end database checkpoint\n";
3673
3674 warn "emergency_perl_save: begin write uuid\n";
3675 write_uuid_sync 1;
3676 warn "emergency_perl_save: end write uuid\n";
3677 };
3678
3679 warn "emergency_perl_save: starting sync()\n";
3680 IO::AIO::aio_sync sub {
3681 warn "emergency_perl_save: finished sync()\n";
3682 };
3683
3684 warn "emergency_perl_save: leave\n";
3685}
3686
3687sub post_cleanup {
3688 my ($make_core) = @_;
3689
3690 warn Carp::longmess "post_cleanup backtrace"
3691 if $make_core;
3692
3693 my $fh = pidfile;
3694 unlink $PIDFILE if <$fh> == $$;
3695}
3696
3697# a safer delete_package, copied from Symbol
3698sub clear_package($) {
3699 my $pkg = shift;
3700
3701 # expand to full symbol table name if needed
3702 unless ($pkg =~ /^main::.*::$/) {
3703 $pkg = "main$pkg" if $pkg =~ /^::/;
3704 $pkg = "main::$pkg" unless $pkg =~ /^main::/;
3705 $pkg .= '::' unless $pkg =~ /::$/;
3706 }
3707
3708 my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
3709 my $stem_symtab = *{$stem}{HASH};
3710
3711 defined $stem_symtab and exists $stem_symtab->{$leaf}
3712 or return;
3713
3714 # clear all symbols
3715 my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
3716 for my $name (keys %$leaf_symtab) {
3717 _gv_clear *{"$pkg$name"};
3718# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
3719 }
3720 warn "cleared package $pkg\n";#d#
3721}
3722
3723sub do_reload_perl() {
3724 # can/must only be called in main
3725 if ($Coro::current != $Coro::main) {
3726 warn "can only reload from main coroutine";
3727 return;
3728 }
3729
3730 return if $RELOAD++;
3731
3732 my $t1 = EV::time;
3733
3734 while ($RELOAD) {
3735 warn "reloading...";
3736
3737 warn "entering sync_job";
3738
3739 cf::sync_job {
3740 cf::write_runtime_sync; # external watchdog should not bark
3741 cf::emergency_save;
3742 cf::write_runtime_sync; # external watchdog should not bark
3743
3744 warn "syncing database to disk";
3745 BDB::db_env_txn_checkpoint $DB_ENV;
3746
3747 # if anything goes wrong in here, we should simply crash as we already saved
3748
3749 warn "flushing outstanding aio requests";
3750 while (IO::AIO::nreqs || BDB::nreqs) {
3751 Coro::EV::timer_once 0.01; # let the sync_job do it's thing
3752 }
3753
3754 warn "cancelling all extension coros";
3755 $_->cancel for values %EXT_CORO;
3756 %EXT_CORO = ();
3757
3758 warn "removing commands";
3759 %COMMAND = ();
3760
3761 warn "removing ext/exti commands";
3762 %EXTCMD = ();
3763 %EXTICMD = ();
3764
3765 warn "unloading/nuking all extensions";
3766 for my $pkg (@EXTS) {
3767 warn "... unloading $pkg";
3768
3769 if (my $cb = $pkg->can ("unload")) {
3770 eval {
3771 $cb->($pkg);
3772 1
3773 } or warn "$pkg unloaded, but with errors: $@";
3774 }
3775
3776 warn "... clearing $pkg";
3777 clear_package $pkg;
3778 }
3779
3780 warn "unloading all perl modules loaded from $LIBDIR";
3781 while (my ($k, $v) = each %INC) {
3782 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
3783
3784 warn "... unloading $k";
3785 delete $INC{$k};
3786
3787 $k =~ s/\.pm$//;
3788 $k =~ s/\//::/g;
3789
3790 if (my $cb = $k->can ("unload_module")) {
3791 $cb->();
3792 }
3793
3794 clear_package $k;
3795 }
3796
3797 warn "getting rid of safe::, as good as possible";
3798 clear_package "safe::$_"
3799 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
3800
3801 warn "unloading cf.pm \"a bit\"";
3802 delete $INC{"cf.pm"};
3803 delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
3804
3805 # don't, removes xs symbols, too,
3806 # and global variables created in xs
3807 #clear_package __PACKAGE__;
3808
3809 warn "unload completed, starting to reload now";
3810
3811 warn "reloading cf.pm";
3812 require cf;
3813 cf::_connect_to_perl_1;
3814
3815 warn "loading config and database again";
3816 cf::reload_config;
3817
3818 warn "loading extensions";
3819 cf::load_extensions;
3820
3821 if ($REATTACH_ON_RELOAD) {
3822 warn "reattaching attachments to objects/players";
3823 _global_reattach; # objects, sockets
3824 warn "reattaching attachments to maps";
3825 reattach $_ for values %MAP;
3826 warn "reattaching attachments to players";
3827 reattach $_ for values %PLAYER;
3828 }
3829
3830 warn "running post_init jobs";
3831 (pop @POST_INIT)->(1) while @POST_INIT;
3832
3833 warn "leaving sync_job";
3834
3835 1
3836 } or do {
3837 warn $@;
3838 cf::cleanup "error while reloading, exiting.";
3839 };
3840
210 warn "reloaded\n"; 3841 warn "reloaded";
3842 --$RELOAD;
3843 }
211 3844
3845 $t1 = EV::time - $t1;
3846 warn "reload completed in ${t1}s\n";
3847};
3848
3849our $RELOAD_WATCHER; # used only during reload
3850
3851sub reload_perl() {
3852 # doing reload synchronously and two reloads happen back-to-back,
3853 # coro crashes during coro_state_free->destroy here.
3854
3855 $RELOAD_WATCHER ||= cf::async {
3856 Coro::AIO::aio_wait cache_extensions;
3857
3858 $RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
3859 do_reload_perl;
3860 undef $RELOAD_WATCHER;
3861 };
3862 };
3863}
3864
3865register_command "reload" => sub {
3866 my ($who, $arg) = @_;
3867
3868 if ($who->flag (FLAG_WIZ)) {
212 $who->message ("reloaded"); 3869 $who->message ("reloading server.");
3870 async {
3871 $Coro::current->{desc} = "perl_reload";
3872 reload_perl;
3873 };
3874 }
3875};
3876
3877unshift @INC, $LIBDIR;
3878
3879my $bug_warning = 0;
3880
3881our @WAIT_FOR_TICK;
3882our @WAIT_FOR_TICK_BEGIN;
3883
3884sub wait_for_tick {
3885 return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
3886
3887 my $signal = new Coro::Signal;
3888 push @WAIT_FOR_TICK, $signal;
3889 $signal->wait;
3890}
3891
3892sub wait_for_tick_begin {
3893 return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
3894
3895 my $signal = new Coro::Signal;
3896 push @WAIT_FOR_TICK_BEGIN, $signal;
3897 $signal->wait;
3898}
3899
3900sub tick {
3901 if ($Coro::current != $Coro::main) {
3902 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
3903 unless ++$bug_warning > 10;
3904 return;
3905 }
3906
3907 cf::server_tick; # one server iteration
3908
3909 if ($NOW >= $NEXT_RUNTIME_WRITE) {
3910 $NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
3911 Coro::async_pool {
3912 $Coro::current->{desc} = "runtime saver";
3913 write_runtime_sync
3914 or warn "ERROR: unable to write runtime file: $!";
3915 };
3916 }
3917
3918 if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
3919 $sig->send;
3920 }
3921 while (my $sig = shift @WAIT_FOR_TICK) {
3922 $sig->send;
3923 }
3924
3925 $LOAD = ($NOW - $TICK_START) / $TICK;
3926 $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
3927
3928 if (0) {
3929 if ($NEXT_TICK) {
3930 my $jitter = $TICK_START - $NEXT_TICK;
3931 $JITTER = $JITTER * 0.75 + $jitter * 0.25;
3932 warn "jitter $JITTER\n";#d#
3933 }
3934 }
3935}
3936
3937{
3938 # configure BDB
3939
3940 BDB::min_parallel 8;
3941 BDB::max_poll_reqs $TICK * 0.1;
3942 $AnyEvent::BDB::WATCHER->priority (1);
3943
3944 unless ($DB_ENV) {
3945 $DB_ENV = BDB::db_env_create;
3946 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
3947 $DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
3948 $DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
3949 $DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
3950 $DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
3951
3952 cf::sync_job {
3953 eval {
3954 BDB::db_env_open
3955 $DB_ENV,
3956 $BDBDIR,
3957 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
3958 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
3959 0666;
3960
3961 cf::cleanup "db_env_open($BDBDIR): $!" if $!;
3962 };
3963
3964 cf::cleanup "db_env_open(db): $@" if $@;
3965 };
3966 }
3967
3968 $BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
3969 BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
3970 };
3971 $BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
3972 BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
3973 };
3974 $BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
3975 BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
3976 };
3977}
3978
3979{
3980 # configure IO::AIO
3981
3982 IO::AIO::min_parallel 8;
3983 IO::AIO::max_poll_time $TICK * 0.1;
3984 undef $AnyEvent::AIO::WATCHER;
3985}
3986
3987my $_log_backtrace;
3988
3989sub _log_backtrace {
3990 my ($msg, @addr) = @_;
3991
3992 $msg =~ s/\n//;
3993
3994 # limit the # of concurrent backtraces
3995 if ($_log_backtrace < 2) {
3996 ++$_log_backtrace;
3997 my $perl_bt = Carp::longmess $msg;
3998 async {
3999 $Coro::current->{desc} = "abt $msg";
4000
4001 my @bt = fork_call {
4002 @addr = map { sprintf "%x", $_ } @addr;
4003 my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
4004 open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
4005 or die "addr2line: $!";
4006
4007 my @funcs;
4008 my @res = <$fh>;
4009 chomp for @res;
4010 while (@res) {
4011 my ($func, $line) = splice @res, 0, 2, ();
4012 push @funcs, "[$func] $line";
4013 }
4014
4015 @funcs
4016 };
4017
4018 LOG llevInfo, "[ABT] $perl_bt\n";
4019 LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
4020 LOG llevInfo, "[ABT] $_\n" for @bt;
4021 --$_log_backtrace;
4022 };
213 } else { 4023 } else {
214 $who->message ("Intruder Alert!"); 4024 LOG llevInfo, "[ABT] $msg\n";
4025 LOG llevInfo, "[ABT] [suppressed]\n";
215 } 4026 }
216}; 4027}
217 4028
218############################################################################# 4029# load additional modules
219# load/save/clean perl data associated with a map 4030require "cf/$_.pm" for @EXTRA_MODULES;
4031cf::_connect_to_perl_2;
220 4032
221*on_mapclean = sub { 4033END { cf::emergency_save }
222 my ($map) = @_;
223
224 my $path = $map->tmpname;
225 defined $path or return;
226
227 unlink "$path.cfperl";
228};
229
230*on_mapin =
231*on_mapload = sub {
232 my ($map) = @_;
233
234 my $path = $map->tmpname;
235 $path = $map->path unless defined $path;
236
237 open my $fh, "<:raw", "$path.cfperl"
238 or return; # no perl data
239
240 my $data = Storable::thaw do { local $/; <$fh> };
241
242 $data->{version} <= 1
243 or return; # too new
244
245 $map->_set_obs ($data->{obs});
246};
247
248*on_mapout = sub {
249 my ($map) = @_;
250
251 my $path = $map->tmpname;
252 $path = $map->path unless defined $path;
253
254 my $obs = $map->_get_obs;
255
256 if (defined $obs) {
257 open my $fh, ">:raw", "$path.cfperl"
258 or die "$path.cfperl: $!";
259
260 stat $path;
261
262 print $fh Storable::nfreeze {
263 size => (stat _)[7],
264 time => (stat _)[9],
265 version => 1,
266 obs => $obs,
267 };
268
269 chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
270 } else {
271 unlink "$path.cfperl";
272 }
273};
274
275#############################################################################
276# load/save perl data associated with player->ob objects
277
278*on_player_load = sub {
279 my ($ob, $path) = @_;
280
281 if (open my $fh, "<:raw", "$path.cfperl") {
282
283 #d##TODO#remove
284
285 my $data = Storable::thaw do { local $/; <$fh> };
286
287 $data->{version} <= 1
288 or return; # too new
289
290 %$ob = %{$data->{ob}};
291 return;
292 }
293
294 for my $o ($ob, $ob->inv) {
295 if (my $value = $o->get_ob_key_value ("_perl_data")) {
296 $o->set_ob_key_value ("_perl_data");
297
298 %$o = %{ Storable::thaw pack "H*", $value };
299 }
300 }
301};
302
303*on_player_save = sub {
304 my ($ob, $path) = @_;
305
306 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
307 for grep %$_, $ob, $ob->inv;
308
309 unlink "$path.cfperl";#d##TODO#remove
310};
311
312register "<global>", __PACKAGE__;
313
314load_extensions;
315 4034
3161 40351
317 4036

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