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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.34 by root, Thu Aug 24 13:13:49 2006 UTC vs.
Revision 1.479 by root, Thu Oct 8 05:04:27 2009 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
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your 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 GNU General Public License
17# along with this program. If not, see <http://www.gnu.org/licenses/>.
18#
19# The authors can be reached via e-mail to <support@deliantra.net>
20#
21
1package cf; 22package cf;
23
24use 5.10.0;
25use utf8;
26use strict qw(vars subs);
2 27
3use Symbol; 28use Symbol;
4use List::Util; 29use List::Util;
5use Storable; 30use Socket;
31use EV;
6use Opcode; 32use Opcode;
7use Safe; 33use Safe;
8use Safe::Hole; 34use Safe::Hole;
35use Storable ();
9 36
37use Guard ();
38use Coro ();
39use Coro::State;
40use Coro::Handle;
41use Coro::EV;
42use Coro::AnyEvent;
43use Coro::Timer;
44use Coro::Signal;
45use Coro::Semaphore;
46use Coro::SemaphoreSet;
47use Coro::AnyEvent;
48use Coro::AIO;
49use Coro::BDB 1.6;
50use Coro::Storable;
51use Coro::Util ();
52
53use JSON::XS 2.01 ();
54use BDB ();
55use Data::Dumper;
56use Digest::MD5;
57use Fcntl;
58use YAML ();
59use IO::AIO ();
10use Time::HiRes; 60use Time::HiRes;
11use Event; 61use Compress::LZF;
12$Event::Eval = 1; # no idea why this is required, but it is 62use Digest::MD5 ();
13 63
14use strict; 64AnyEvent::detect;
15 65
16our %COMMAND; 66# configure various modules to our taste
67#
68$Storable::canonical = 1; # reduce rsync transfers
69Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
70
71$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
72
73# make sure c-lzf reinitialises itself
74Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
75Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
76
77# strictly for debugging
78$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
79
80sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
81
82our %COMMAND = ();
83our %COMMAND_TIME = ();
84
85our @EXTS = (); # list of extension package names
86our %EXTCMD = ();
87our %EXTICMD = ();
88our %EXT_CORO = (); # coroutines bound to extensions
89our %EXT_MAP = (); # pluggable maps
90
91our $RELOAD; # number of reloads so far, non-zero while in reload
17our @EVENT; 92our @EVENT;
18our %PROP_TYPE; 93our @REFLECT; # set by XS
19our %PROP_IDX; 94our %REFLECT; # set by us
20our $LIBDIR = maps_directory "perl";
21 95
22BEGIN { 96our $CONFDIR = confdir;
23 @EVENT = map lc, @EVENT; 97our $DATADIR = datadir;
98our $LIBDIR = "$DATADIR/ext";
99our $PODDIR = "$DATADIR/pod";
100our $MAPDIR = "$DATADIR/" . mapdir;
101our $LOCALDIR = localdir;
102our $TMPDIR = "$LOCALDIR/" . tmpdir;
103our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
104our $PLAYERDIR = "$LOCALDIR/" . playerdir;
105our $RANDOMDIR = "$LOCALDIR/random";
106our $BDBDIR = "$LOCALDIR/db";
107our $PIDFILE = "$LOCALDIR/pid";
108our $RUNTIMEFILE = "$LOCALDIR/runtime";
24 109
25 *CORE::GLOBAL::warn = sub { 110our %RESOURCE;
111
112our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
113our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
114our $NEXT_TICK;
115our $USE_FSYNC = 1; # use fsync to write maps - default on
116
117our $BDB_DEADLOCK_WATCHER;
118our $BDB_CHECKPOINT_WATCHER;
119our $BDB_TRICKLE_WATCHER;
120our $DB_ENV;
121
122our @EXTRA_MODULES = qw(pod mapscript);
123
124our %CFG;
125
126our $UPTIME; $UPTIME ||= time;
127our $RUNTIME;
128our $NOW;
129
130our (%PLAYER, %PLAYER_LOADING); # all users
131our (%MAP, %MAP_LOADING ); # all maps
132our $LINK_MAP; # the special {link} map, which is always available
133
134# used to convert map paths into valid unix filenames by replacing / by ∕
135our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
136
137our $LOAD; # a number between 0 (idle) and 1 (too many objects)
138our $LOADAVG; # same thing, but with alpha-smoothing
139our $JITTER; # average jitter
140our $TICK_START; # for load detecting purposes
141
142our @POST_INIT;
143
144our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
145our $REALLY_UNLOOP; # never set to true, please :)
146
147binmode STDOUT;
148binmode STDERR;
149
150# read virtual server time, if available
151unless ($RUNTIME || !-e $RUNTIMEFILE) {
152 open my $fh, "<", $RUNTIMEFILE
153 or die "unable to read $RUNTIMEFILE file: $!";
154 $RUNTIME = <$fh> + 0.;
155}
156
157eval "sub TICK() { $TICK } 1" or die;
158
159mkdir $_
160 for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
161
162our $EMERGENCY_POSITION;
163
164sub cf::map::normalise;
165
166#############################################################################
167
168%REFLECT = ();
169for (@REFLECT) {
170 my $reflect = JSON::XS::decode_json $_;
171 $REFLECT{$reflect->{class}} = $reflect;
172}
173
174#############################################################################
175
176=head2 GLOBAL VARIABLES
177
178=over 4
179
180=item $cf::UPTIME
181
182The timestamp of the server start (so not actually an uptime).
183
184=item $cf::RUNTIME
185
186The time this server has run, starts at 0 and is increased by $cf::TICK on
187every server tick.
188
189=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
190$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
191$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
192
193Various directories - "/etc", read-only install directory, perl-library
194directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
195unique-items directory, player file directory, random maps directory and
196database environment.
197
198=item $cf::NOW
199
200The time of the last (current) server tick.
201
202=item $cf::TICK
203
204The interval between server ticks, in seconds.
205
206=item $cf::LOADAVG
207
208The current CPU load on the server (alpha-smoothed), as a value between 0
209(none) and 1 (overloaded), indicating how much time is spent on processing
210objects per tick. Healthy values are < 0.5.
211
212=item $cf::LOAD
213
214The raw value load value from the last tick.
215
216=item %cf::CFG
217
218Configuration for the server, loaded from C</etc/deliantra-server/config>, or
219from wherever your confdir points to.
220
221=item cf::wait_for_tick, cf::wait_for_tick_begin
222
223These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
224returns directly I<after> the tick processing (and consequently, can only wake one process
225per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
226
227=item @cf::INVOKE_RESULTS
228
229This array contains the results of the last C<invoke ()> call. When
230C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
231that call.
232
233=item %cf::REFLECT
234
235Contains, for each (C++) class name, a hash reference with information
236about object members (methods, scalars and arrays) and other metadata,
237which is useful for introspection.
238
239=back
240
241=cut
242
243$Coro::State::WARNHOOK = sub {
26 my $msg = join "", @_; 244 my $msg = join "", @_;
245
27 $msg .= "\n" 246 $msg .= "\n"
28 unless $msg =~ /\n$/; 247 unless $msg =~ /\n$/;
29 248
30 print STDERR "cfperl: $msg"; 249 $msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
250
31 LOG llevError, "cfperl: $msg"; 251 LOG llevError, $msg;
32 }; 252};
33}
34 253
35my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply! 254$Coro::State::DIEHOOK = sub {
255 return unless $^S eq 0; # "eq", not "=="
36 256
37# generate property mutators 257 warn Carp::longmess $_[0];
38sub prop_gen {
39 my ($prefix, $class) = @_;
40 258
41 no strict 'refs'; 259 if ($Coro::current == $Coro::main) {#d#
260 warn "DIEHOOK called in main context, Coro bug?\n";#d#
261 return;#d#
262 }#d#
42 263
43 for my $prop (keys %PROP_TYPE) { 264 # kill coroutine otherwise
44 $prop =~ /^\Q$prefix\E_(.*$)/ or next; 265 Coro::terminate
45 my $sub = lc $1; 266};
46 267
47 my $type = $PROP_TYPE{$prop}; 268@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
48 my $idx = $PROP_IDX {$prop}; 269@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
49 270@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
50 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub { 271@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
51 $_[0]->get_property ($type, $idx) 272@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
52 }; 273@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
53
54 *{"$class\::set_$sub"} = sub {
55 $_[0]->set_property ($type, $idx, $_[1]);
56 } unless $ignore_set{$prop};
57 }
58}
59
60# auto-generate most of the API
61
62prop_gen OBJECT_PROP => "cf::object";
63# CFAPI_OBJECT_ANIMATION?
64prop_gen PLAYER_PROP => "cf::object::player";
65
66prop_gen MAP_PROP => "cf::map";
67prop_gen ARCH_PROP => "cf::arch";
68
69# guessed hierarchies
70
71@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; 274@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
72@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
73 275
74# we bless all objects into derived classes to force a method lookup 276# we bless all objects into (empty) derived classes to force a method lookup
75# within the Safe compartment. 277# within the Safe compartment.
76for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) { 278for my $pkg (qw(
77 no strict 'refs'; 279 cf::global cf::attachable
280 cf::object cf::object::player
281 cf::client cf::player
282 cf::arch cf::living
283 cf::map cf::mapspace
284 cf::party cf::region
285)) {
78 @{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg; 286 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79} 287}
80 288
81$Event::DIED = sub { 289$EV::DIED = sub {
82 warn "error in event callback: @_"; 290 warn "error in event callback: @_";
83}; 291};
84 292
85my %ext_pkg; 293#############################################################################
86my @exts;
87my @hook;
88my %command;
89my %extcmd;
90 294
91sub inject_event { 295=head2 UTILITY FUNCTIONS
92 my $extension = shift; 296
297=over 4
298
299=item dumpval $ref
300
301=cut
302
303sub dumpval {
304 eval {
305 local $SIG{__DIE__};
306 my $d;
307 if (1) {
308 $d = new Data::Dumper([$_[0]], ["*var"]);
309 $d->Terse(1);
310 $d->Indent(2);
311 $d->Quotekeys(0);
312 $d->Useqq(1);
313 #$d->Bless(...);
314 $d->Seen($_[1]) if @_ > 1;
315 $d = $d->Dump();
316 }
317 $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
318 $d
319 } || "[unable to dump $_[0]: '$@']";
320}
321
322=item $ref = cf::decode_json $json
323
324Converts a JSON string into the corresponding perl data structure.
325
326=item $json = cf::encode_json $ref
327
328Converts a perl data structure into its JSON representation.
329
330=cut
331
332our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
333
334sub encode_json($) { $json_coder->encode ($_[0]) }
335sub decode_json($) { $json_coder->decode ($_[0]) }
336
337=item cf::post_init { BLOCK }
338
339Execute the given codeblock, I<after> all extensions have been (re-)loaded,
340but I<before> the server starts ticking again.
341
342The cdoeblock will have a single boolean argument to indicate whether this
343is a reload or not.
344
345=cut
346
347sub post_init(&) {
348 push @POST_INIT, shift;
349}
350
351=item cf::lock_wait $string
352
353Wait until the given lock is available. See cf::lock_acquire.
354
355=item my $lock = cf::lock_acquire $string
356
357Wait until the given lock is available and then acquires it and returns
358a L<Guard> object. If the guard object gets destroyed (goes out of scope,
359for example when the coroutine gets canceled), the lock is automatically
360returned.
361
362Locks are *not* recursive, locking from the same coro twice results in a
363deadlocked coro.
364
365Lock names should begin with a unique identifier (for example, cf::map::find
366uses map_find and cf::map::load uses map_load).
367
368=item $locked = cf::lock_active $string
369
370Return true if the lock is currently active, i.e. somebody has locked it.
371
372=cut
373
374our $LOCKS = new Coro::SemaphoreSet;
375
376sub lock_wait($) {
377 $LOCKS->wait ($_[0]);
378}
379
380sub lock_acquire($) {
381 $LOCKS->guard ($_[0])
382}
383
384sub lock_active($) {
385 $LOCKS->count ($_[0]) < 1
386}
387
388sub freeze_mainloop {
389 tick_inhibit_inc;
390
391 &Guard::guard (\&tick_inhibit_dec);
392}
393
394=item cf::periodic $interval, $cb
395
396Like EV::periodic, but randomly selects a starting point so that the actions
397get spread over timer.
398
399=cut
400
401sub periodic($$) {
402 my ($interval, $cb) = @_;
403
404 my $start = rand List::Util::min 180, $interval;
405
406 EV::periodic $start, $interval, 0, $cb
407}
408
409=item cf::get_slot $time[, $priority[, $name]]
410
411Allocate $time seconds of blocking CPU time at priority C<$priority>:
412This call blocks and returns only when you have at least C<$time> seconds
413of cpu time till the next tick. The slot is only valid till the next cede.
414
415The optional C<$name> can be used to identify the job to run. It might be
416used for statistical purposes and should identify the same time-class.
417
418Useful for short background jobs.
419
420=cut
421
422our @SLOT_QUEUE;
423our $SLOT_QUEUE;
424
425$SLOT_QUEUE->cancel if $SLOT_QUEUE;
426$SLOT_QUEUE = Coro::async {
427 $Coro::current->desc ("timeslot manager");
428
429 my $signal = new Coro::Signal;
430
431 while () {
432 next_job:
433 my $avail = cf::till_tick;
434 if ($avail > 0.01) {
435 for (0 .. $#SLOT_QUEUE) {
436 if ($SLOT_QUEUE[$_][0] < $avail) {
437 my $job = splice @SLOT_QUEUE, $_, 1, ();
438 $job->[2]->send;
439 Coro::cede;
440 goto next_job;
441 }
442 }
443 }
444
445 if (@SLOT_QUEUE) {
446 # we do not use wait_for_tick() as it returns immediately when tick is inactive
447 push @cf::WAIT_FOR_TICK, $signal;
448 $signal->wait;
449 } else {
450 Coro::schedule;
451 }
452 }
453};
454
455sub get_slot($;$$) {
456 return if tick_inhibit || $Coro::current == $Coro::main;
457
458 my ($time, $pri, $name) = @_;
459
460 $time = $TICK * .6 if $time > $TICK * .6;
461 my $sig = new Coro::Signal;
462
463 push @SLOT_QUEUE, [$time, $pri, $sig, $name];
464 @SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
465 $SLOT_QUEUE->ready;
466 $sig->wait;
467}
468
469=item cf::async { BLOCK }
470
471Currently the same as Coro::async_pool, meaning you cannot use
472C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
473thing you are allowed to do is call C<prio> on it.
474
475=cut
476
477BEGIN { *async = \&Coro::async_pool }
478
479=item cf::sync_job { BLOCK }
480
481The design of Deliantra requires that the main coroutine ($Coro::main)
482is always able to handle events or runnable, as Deliantra is only
483partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
484acceptable.
485
486If it must be done, put the blocking parts into C<sync_job>. This will run
487the given BLOCK in another coroutine while waiting for the result. The
488server will be frozen during this time, so the block should either finish
489fast or be very important.
490
491=cut
492
493sub sync_job(&) {
494 my ($job) = @_;
495
496 if ($Coro::current == $Coro::main) {
497 my $time = EV::time;
498
499 # this is the main coro, too bad, we have to block
500 # till the operation succeeds, freezing the server :/
501
502 LOG llevError, Carp::longmess "sync job";#d#
503
504 my $freeze_guard = freeze_mainloop;
505
506 my $busy = 1;
507 my @res;
508
509 (async {
510 $Coro::current->desc ("sync job coro");
511 @res = eval { $job->() };
512 warn $@ if $@;
513 undef $busy;
514 })->prio (Coro::PRIO_MAX);
515
516 while ($busy) {
517 if (Coro::nready) {
518 Coro::cede_notself;
519 } else {
520 EV::loop EV::LOOP_ONESHOT;
521 }
522 }
523
524 my $time = EV::time - $time;
525
526 $TICK_START += $time; # do not account sync jobs to server load
527
528 wantarray ? @res : $res[0]
529 } else {
530 # we are in another coroutine, how wonderful, everything just works
531
532 $job->()
533 }
534}
535
536=item $coro = cf::async_ext { BLOCK }
537
538Like async, but this coro is automatically being canceled when the
539extension calling this is being unloaded.
540
541=cut
542
543sub async_ext(&) {
544 my $cb = shift;
545
546 my $coro = &Coro::async ($cb);
547
548 $coro->on_destroy (sub {
549 delete $EXT_CORO{$coro+0};
550 });
551 $EXT_CORO{$coro+0} = $coro;
552
553 $coro
554}
555
556=item fork_call { }, $args
557
558Executes the given code block with the given arguments in a seperate
559process, returning the results. Everything must be serialisable with
560Coro::Storable. May, of course, block. Note that the executed sub may
561never block itself or use any form of event handling.
562
563=cut
564
565sub fork_call(&@) {
566 my ($cb, @args) = @_;
567
568 # we seemingly have to make a local copy of the whole thing,
569 # otherwise perl prematurely frees the stuff :/
570 # TODO: investigate and fix (likely this will be rather laborious)
571
572 my @res = Coro::Util::fork_eval {
573 reset_signals;
574 &$cb
575 }, @args;
576
577 wantarray ? @res : $res[-1]
578}
579
580=item $coin = coin_from_name $name
581
582=cut
583
584our %coin_alias = (
585 "silver" => "silvercoin",
586 "silvercoin" => "silvercoin",
587 "silvercoins" => "silvercoin",
588 "gold" => "goldcoin",
589 "goldcoin" => "goldcoin",
590 "goldcoins" => "goldcoin",
591 "platinum" => "platinacoin",
592 "platinumcoin" => "platinacoin",
593 "platinumcoins" => "platinacoin",
594 "platina" => "platinacoin",
595 "platinacoin" => "platinacoin",
596 "platinacoins" => "platinacoin",
597 "royalty" => "royalty",
598 "royalties" => "royalty",
599);
600
601sub coin_from_name($) {
602 $coin_alias{$_[0]}
603 ? cf::arch::find $coin_alias{$_[0]}
604 : undef
605}
606
607=item $value = cf::db_get $family => $key
608
609Returns a single value from the environment database.
610
611=item cf::db_put $family => $key => $value
612
613Stores the given C<$value> in the family. It can currently store binary
614data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
615
616=item $db = cf::db_table "name"
617
618Create and/or open a new database table. The string must not be "db" and must be unique
619within each server.
620
621=cut
622
623sub db_table($) {
624 my ($name) = @_;
625 my $db = BDB::db_create $DB_ENV;
626
627 eval {
628 $db->set_flags (BDB::CHKSUM);
629
630 utf8::encode $name;
631 BDB::db_open $db, undef, $name, undef, BDB::BTREE,
632 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
633 cf::cleanup "db_open(db): $!" if $!;
634 };
635 cf::cleanup "db_open(db): $@" if $@;
636
637 $db
638}
639
640our $DB;
641
642sub db_init {
643 cf::sync_job {
644 $DB ||= db_table "db";
645 };
646}
647
648sub db_get($$) {
649 my $key = "$_[0]/$_[1]";
650
651 cf::sync_job {
652 BDB::db_get $DB, undef, $key, my $data;
653
654 $! ? ()
655 : $data
656 }
657}
658
659sub db_put($$$) {
660 BDB::dbreq_pri 4;
661 BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
662}
663
664=item cf::cache $id => [$paths...], $processversion => $process
665
666Generic caching function that returns the value of the resource $id,
667caching and regenerating as required.
668
669This function can block.
670
671=cut
672
673sub cache {
674 my ($id, $src, $processversion, $process) = @_;
675
676 my $meta =
677 join "\x00",
678 $processversion,
679 map {
680 aio_stat $_
681 and Carp::croak "$_: $!";
682
683 ($_, (stat _)[7,9])
684 } @$src;
685
686 my $dbmeta = db_get cache => "$id/meta";
687 if ($dbmeta ne $meta) {
688 # changed, we may need to process
689
690 my @data;
691 my $md5;
692
693 for (0 .. $#$src) {
694 0 <= aio_load $src->[$_], $data[$_]
695 or Carp::croak "$src->[$_]: $!";
696 }
697
698 # if processing is expensive, check
699 # checksum first
700 if (1) {
701 $md5 =
702 join "\x00",
703 $processversion,
704 map {
705 cf::cede_to_tick;
706 ($src->[$_], Digest::MD5::md5_hex $data[$_])
707 } 0.. $#$src;
708
709
710 my $dbmd5 = db_get cache => "$id/md5";
711 if ($dbmd5 eq $md5) {
712 db_put cache => "$id/meta", $meta;
713
714 return db_get cache => "$id/data";
715 }
716 }
717
718 my $t1 = Time::HiRes::time;
719 my $data = $process->(\@data);
720 my $t2 = Time::HiRes::time;
721
722 warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
723
724 db_put cache => "$id/data", $data;
725 db_put cache => "$id/md5" , $md5;
726 db_put cache => "$id/meta", $meta;
727
728 return $data;
729 }
730
731 db_get cache => "$id/data"
732}
733
734=item cf::datalog type => key => value, ...
735
736Log a datalog packet of the given type with the given key-value pairs.
737
738=cut
739
740sub datalog($@) {
741 my ($type, %kv) = @_;
742 warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
743}
744
745=back
746
747=cut
748
749#############################################################################
750
751=head2 ATTACHABLE OBJECTS
752
753Many objects in deliantra are so-called attachable objects. That means you can
754attach callbacks/event handlers (a collection of which is called an "attachment")
755to it. All such attachable objects support the following methods.
756
757In the following description, CLASS can be any of C<global>, C<object>
758C<player>, C<client> or C<map> (i.e. the attachable objects in
759Deliantra).
760
761=over 4
762
763=item $attachable->attach ($attachment, key => $value...)
764
765=item $attachable->detach ($attachment)
766
767Attach/detach a pre-registered attachment to a specific object and give it
768the specified key/value pairs as arguments.
769
770Example, attach a minesweeper attachment to the given object, making it a
77110x10 minesweeper game:
772
773 $obj->attach (minesweeper => width => 10, height => 10);
774
775=item $bool = $attachable->attached ($name)
776
777Checks wether the named attachment is currently attached to the object.
778
779=item cf::CLASS->attach ...
780
781=item cf::CLASS->detach ...
782
783Define an anonymous attachment and attach it to all objects of the given
784CLASS. See the next function for an explanation of its arguments.
785
786You can attach to global events by using the C<cf::global> class.
787
788Example, log all player logins:
789
790 cf::player->attach (
791 on_login => sub {
792 my ($pl) = @_;
793 ...
794 },
795 );
796
797Example, attach to the jeweler skill:
798
799 cf::object->attach (
800 type => cf::SKILL,
801 subtype => cf::SK_JEWELER,
802 on_use_skill => sub {
803 my ($sk, $ob, $part, $dir, $msg) = @_;
804 ...
805 },
806 );
807
808=item cf::CLASS::attachment $name, ...
809
810Register an attachment by C<$name> through which attachable objects of the
811given CLASS can refer to this attachment.
812
813Some classes such as deliantra maps and objects can specify attachments
814that are attached at load/instantiate time, thus the need for a name.
815
816These calls expect any number of the following handler/hook descriptions:
817
818=over 4
819
820=item prio => $number
821
822Set the priority for all following handlers/hooks (unless overwritten
823by another C<prio> setting). Lower priority handlers get executed
824earlier. The default priority is C<0>, and many built-in handlers are
825registered at priority C<-1000>, so lower priorities should not be used
826unless you know what you are doing.
827
828=item type => $type
829
830(Only for C<< cf::object->attach >> calls), limits the attachment to the
831given type of objects only (the additional parameter C<subtype> can be
832used to further limit to the given subtype).
833
834=item on_I<event> => \&cb
835
836Call the given code reference whenever the named event happens (event is
837something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
838handlers are recognised generally depends on the type of object these
839handlers attach to).
840
841See F<include/eventinc.h> for the full list of events supported, and their
842class.
843
844=item package => package::
845
846Look for sub functions of the name C<< on_I<event> >> in the given
847package and register them. Only handlers for eevents supported by the
848object/class are recognised.
849
850=back
851
852Example, define an attachment called "sockpuppet" that calls the given
853event handler when a monster attacks:
854
855 cf::object::attachment sockpuppet =>
856 on_skill_attack => sub {
857 my ($self, $victim) = @_;
858 ...
859 }
860 }
861
862=item $attachable->valid
863
864Just because you have a perl object does not mean that the corresponding
865C-level object still exists. If you try to access an object that has no
866valid C counterpart anymore you get an exception at runtime. This method
867can be used to test for existence of the C object part without causing an
868exception.
869
870=cut
871
872# the following variables are defined in .xs and must not be re-created
873our @CB_GLOBAL = (); # registry for all global events
874our @CB_ATTACHABLE = (); # registry for all attachables
875our @CB_OBJECT = (); # all objects (should not be used except in emergency)
876our @CB_PLAYER = ();
877our @CB_CLIENT = ();
878our @CB_TYPE = (); # registry for type (cf-object class) based events
879our @CB_MAP = ();
880
881my %attachment;
882
883sub cf::attachable::thawer_merge {
884 # simply override everything except _meta
885 local $_[0]{_meta};
886 %{$_[0]} = %{$_[1]};
887}
888
889sub _attach_cb($$$$) {
890 my ($registry, $event, $prio, $cb) = @_;
891
892 use sort 'stable';
893
894 $cb = [$prio, $cb];
895
896 @{$registry->[$event]} = sort
897 { $a->[0] cmp $b->[0] }
898 @{$registry->[$event] || []}, $cb;
899}
900
901# hack
902my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
903
904# attach handles attaching event callbacks
905# the only thing the caller has to do is pass the correct
906# registry (== where the callback attaches to).
907sub _attach {
908 my ($registry, $klass, @arg) = @_;
909
910 my $object_type;
911 my $prio = 0;
912 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
913
914 #TODO: get rid of this hack
915 if ($attachable_klass{$klass}) {
916 %cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
917 }
918
919 while (@arg) {
920 my $type = shift @arg;
921
922 if ($type eq "prio") {
923 $prio = shift @arg;
924
925 } elsif ($type eq "type") {
926 $object_type = shift @arg;
927 $registry = $CB_TYPE[$object_type] ||= [];
928
929 } elsif ($type eq "subtype") {
930 defined $object_type or Carp::croak "subtype specified without type";
931 my $object_subtype = shift @arg;
932 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
933
934 } elsif ($type eq "package") {
935 my $pkg = shift @arg;
936
937 while (my ($name, $id) = each %cb_id) {
938 if (my $cb = $pkg->can ($name)) {
939 _attach_cb $registry, $id, $prio, $cb;
940 }
941 }
942
943 } elsif (exists $cb_id{$type}) {
944 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
945
946 } elsif (ref $type) {
947 warn "attaching objects not supported, ignoring.\n";
948
949 } else {
950 shift @arg;
951 warn "attach argument '$type' not supported, ignoring.\n";
952 }
953 }
954}
955
956sub _object_attach {
957 my ($obj, $name, %arg) = @_;
958
959 return if exists $obj->{_attachment}{$name};
960
961 if (my $attach = $attachment{$name}) {
962 my $registry = $obj->registry;
963
964 for (@$attach) {
965 my ($klass, @attach) = @$_;
966 _attach $registry, $klass, @attach;
967 }
968
969 $obj->{$name} = \%arg;
970 } else {
971 warn "object uses attachment '$name' which is not available, postponing.\n";
972 }
973
974 $obj->{_attachment}{$name} = undef;
975}
976
977sub cf::attachable::attach {
978 if (ref $_[0]) {
979 _object_attach @_;
980 } else {
981 _attach shift->_attach_registry, @_;
982 }
983 _recalc_want;
984};
985
986# all those should be optimised
987sub cf::attachable::detach {
988 my ($obj, $name) = @_;
989
990 if (ref $obj) {
991 delete $obj->{_attachment}{$name};
992 reattach ($obj);
993 } else {
994 Carp::croak "cannot, currently, detach class attachments";
995 }
996 _recalc_want;
997};
998
999sub cf::attachable::attached {
1000 my ($obj, $name) = @_;
1001
1002 exists $obj->{_attachment}{$name}
1003}
1004
1005for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
1006 eval "#line " . __LINE__ . " 'cf.pm'
1007 sub cf::\L$klass\E::_attach_registry {
1008 (\\\@CB_$klass, KLASS_$klass)
1009 }
1010
1011 sub cf::\L$klass\E::attachment {
1012 my \$name = shift;
1013
1014 \$attachment{\$name} = [[KLASS_$klass, \@_]];
1015 }
1016 ";
1017 die if $@;
1018}
1019
1020our $override;
1021our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
1022
1023sub override {
1024 $override = 1;
1025 @INVOKE_RESULTS = (@_);
1026}
1027
1028sub do_invoke {
93 my $event_code = shift; 1029 my $event = shift;
1030 my $callbacks = shift;
94 1031
95 my $cb = $hook[$event_code]{$extension} 1032 @INVOKE_RESULTS = ();
1033
1034 local $override;
1035
1036 for (@$callbacks) {
1037 eval { &{$_->[1]} };
1038
1039 if ($@) {
1040 warn "$@";
1041 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
1042 override;
1043 }
1044
1045 return 1 if $override;
1046 }
1047
1048 0
1049}
1050
1051=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
1052
1053=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
1054
1055Generate an object-specific event with the given arguments.
1056
1057This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
1058removed in future versions), and there is no public API to access override
1059results (if you must, access C<@cf::INVOKE_RESULTS> directly).
1060
1061=back
1062
1063=cut
1064
1065#############################################################################
1066# object support
1067
1068sub _object_equal($$);
1069sub _object_equal($$) {
1070 my ($a, $b) = @_;
1071
1072 return 0 unless (ref $a) eq (ref $b);
1073
1074 if ("HASH" eq ref $a) {
1075 my @ka = keys %$a;
1076 my @kb = keys %$b;
1077
1078 return 0 if @ka != @kb;
1079
1080 for (0 .. $#ka) {
1081 return 0 unless $ka[$_] eq $kb[$_];
1082 return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
1083 }
1084
1085 } elsif ("ARRAY" eq ref $a) {
1086
1087 return 0 if @$a != @$b;
1088
1089 for (0 .. $#$a) {
1090 return 0 unless _object_equal $a->[$_], $b->[$_];
1091 }
1092
1093 } elsif ($a ne $b) {
1094 return 0;
1095 }
1096
1097 1
1098}
1099
1100our $SLOW_MERGES;#d#
1101sub _can_merge {
1102 my ($ob1, $ob2) = @_;
1103
1104 ++$SLOW_MERGES;#d#
1105
1106 # we do the slow way here
1107 return _object_equal $ob1, $ob2
1108}
1109
1110sub reattach {
1111 # basically do the same as instantiate, without calling instantiate
1112 my ($obj) = @_;
1113
1114 # no longer needed after getting rid of delete_package?
1115 #bless $obj, ref $obj; # re-bless in case extensions have been reloaded
1116
1117 my $registry = $obj->registry;
1118
1119 @$registry = ();
1120
1121 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
1122
1123 for my $name (keys %{ $obj->{_attachment} || {} }) {
1124 if (my $attach = $attachment{$name}) {
1125 for (@$attach) {
1126 my ($klass, @attach) = @$_;
1127 _attach $registry, $klass, @attach;
1128 }
1129 } else {
1130 warn "object uses attachment '$name' that is not available, postponing.\n";
1131 }
1132 }
1133}
1134
1135cf::attachable->attach (
1136 prio => -1000000,
1137 on_instantiate => sub {
1138 my ($obj, $data) = @_;
1139
1140 $data = decode_json $data;
1141
1142 for (@$data) {
1143 my ($name, $args) = @$_;
1144
1145 $obj->attach ($name, %{$args || {} });
1146 }
1147 },
1148 on_reattach => \&reattach,
1149 on_clone => sub {
1150 my ($src, $dst) = @_;
1151
1152 @{$dst->registry} = @{$src->registry};
1153
1154 %$dst = %$src;
1155
1156 %{$dst->{_attachment}} = %{$src->{_attachment}}
1157 if exists $src->{_attachment};
1158 },
1159);
1160
1161sub object_freezer_save {
1162 my ($filename, $rdata, $objs) = @_;
1163
1164 sync_job {
1165 if (length $$rdata) {
1166 utf8::decode (my $decname = $filename);
1167 warn sprintf "saving %s (%d,%d)\n",
1168 $decname, length $$rdata, scalar @$objs;
1169
1170 if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
1171 aio_chmod $fh, SAVE_MODE;
1172 aio_write $fh, 0, (length $$rdata), $$rdata, 0;
1173 if ($cf::USE_FSYNC) {
1174 aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
1175 aio_fsync $fh;
1176 }
1177 aio_close $fh;
1178
1179 if (@$objs) {
1180 if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
1181 aio_chmod $fh, SAVE_MODE;
1182 my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
1183 aio_write $fh, 0, (length $data), $data, 0;
1184 if ($cf::USE_FSYNC) {
1185 aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
1186 aio_fsync $fh;
1187 }
1188 aio_close $fh;
1189 aio_rename "$filename.pst~", "$filename.pst";
1190 }
1191 } else {
1192 aio_unlink "$filename.pst";
1193 }
1194
1195 aio_rename "$filename~", $filename;
1196
1197 $filename =~ s%/[^/]+$%%;
1198 aio_pathsync $filename if $cf::USE_FSYNC;
1199 } else {
1200 warn "unable to save objects: $filename~: $!\n";
1201 }
1202 } else {
1203 aio_unlink $filename;
1204 aio_unlink "$filename.pst";
1205 }
1206 };
1207}
1208
1209sub object_freezer_as_string {
1210 my ($rdata, $objs) = @_;
1211
1212 use Data::Dumper;
1213
1214 $$rdata . Dumper $objs
1215}
1216
1217sub object_thawer_load {
1218 my ($filename) = @_;
1219
1220 my ($data, $av);
1221
1222 (aio_load $filename, $data) >= 0
96 or return; 1223 or return;
97 1224
98 &$cb 1225 unless (aio_stat "$filename.pst") {
99} 1226 (aio_load "$filename.pst", $av) >= 0
100
101sub inject_global_event {
102 my $event = shift;
103
104 my $cb = $hook[$event]
105 or return; 1227 or return;
106 1228
107 List::Util::max map &$_, values %$cb 1229 my $st = eval { Coro::Storable::thaw $av };
108} 1230 $av = $st->{objs};
109
110sub inject_command {
111 my ($name, $obj, $params) = @_;
112
113 for my $cmd (@{ $command{$name} }) {
114 $cmd->[1]->($obj, $params);
115 } 1231 }
116 1232
117 -1 1233 utf8::decode (my $decname = $filename);
1234 warn sprintf "loading %s (%d,%d)\n",
1235 $decname, length $data, scalar @{$av || []};
1236
1237 ($data, $av)
118} 1238}
1239
1240=head2 COMMAND CALLBACKS
1241
1242=over 4
1243
1244=cut
1245
1246#############################################################################
1247# command handling &c
1248
1249=item cf::register_command $name => \&callback($ob,$args);
1250
1251Register a callback for execution when the client sends the user command
1252$name.
1253
1254=cut
119 1255
120sub register_command { 1256sub register_command {
121 my ($name, $time, $cb) = @_; 1257 my ($name, $cb) = @_;
122 1258
123 my $caller = caller; 1259 my $caller = caller;
124 #warn "registering command '$name/$time' to '$caller'"; 1260 #warn "registering command '$name/$time' to '$caller'";
125 1261
126 push @{ $command{$name} }, [$time, $cb, $caller]; 1262 push @{ $COMMAND{$name} }, [$caller, $cb];
127 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
128} 1263}
1264
1265=item cf::register_extcmd $name => \&callback($pl,$packet);
1266
1267Register a callback for execution when the client sends an (synchronous)
1268extcmd packet. Ext commands will be processed in the order they are
1269received by the server, like other user commands. The first argument is
1270the logged-in player. Ext commands can only be processed after a player
1271has logged in successfully.
1272
1273If the callback returns something, it is sent back as if reply was being
1274called.
1275
1276=item cf::register_exticmd $name => \&callback($ns,$packet);
1277
1278Register a callback for execution when the client sends an (asynchronous)
1279exticmd packet. Exti commands are processed by the server as soon as they
1280are received, i.e. out of order w.r.t. other commands. The first argument
1281is a client socket. Exti commands can be received anytime, even before
1282log-in.
1283
1284If the callback returns something, it is sent back as if reply was being
1285called.
1286
1287=cut
129 1288
130sub register_extcmd { 1289sub register_extcmd {
131 my ($name, $cb) = @_; 1290 my ($name, $cb) = @_;
132 1291
133 my $caller = caller; 1292 $EXTCMD{$name} = $cb;
134 #warn "registering extcmd '$name' to '$caller'";
135
136 $extcmd{$name} = [$cb, $caller];
137} 1293}
1294
1295sub register_exticmd {
1296 my ($name, $cb) = @_;
1297
1298 $EXTICMD{$name} = $cb;
1299}
1300
1301use File::Glob ();
1302
1303cf::player->attach (
1304 on_command => sub {
1305 my ($pl, $name, $params) = @_;
1306
1307 my $cb = $COMMAND{$name}
1308 or return;
1309
1310 for my $cmd (@$cb) {
1311 $cmd->[1]->($pl->ob, $params);
1312 }
1313
1314 cf::override;
1315 },
1316 on_extcmd => sub {
1317 my ($pl, $buf) = @_;
1318
1319 my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
1320
1321 if (ref $msg) {
1322 my ($type, $reply, @payload) =
1323 "ARRAY" eq ref $msg
1324 ? @$msg
1325 : ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
1326
1327 my @reply;
1328
1329 if (my $cb = $EXTCMD{$type}) {
1330 @reply = $cb->($pl, @payload);
1331 }
1332
1333 $pl->ext_reply ($reply, @reply)
1334 if $reply;
1335
1336 } else {
1337 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
1338 }
1339
1340 cf::override;
1341 },
1342);
1343
1344# "readahead" all extensions
1345sub cache_extensions {
1346 my $grp = IO::AIO::aio_group;
1347
1348 add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
1349 for (grep /\.ext$/, @{$_[0]}) {
1350 add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
1351 }
1352 };
1353
1354 $grp
1355}
1356
1357sub load_extensions {
1358 cf::sync_job {
1359 my %todo;
1360
1361 for my $path (<$LIBDIR/*.ext>) {
1362 next unless -r $path;
1363
1364 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
1365 my $base = $1;
1366 my $pkg = $1;
1367 $pkg =~ s/[^[:word:]]/_/g;
1368 $pkg = "ext::$pkg";
1369
1370 open my $fh, "<:utf8", $path
1371 or die "$path: $!";
1372
1373 my $source = do { local $/; <$fh> };
1374
1375 my %ext = (
1376 path => $path,
1377 base => $base,
1378 pkg => $pkg,
1379 );
1380
1381 $ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
1382 if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
1383
1384 $ext{source} =
1385 "package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
1386 . "#line 1 \"$path\"\n{\n"
1387 . $source
1388 . "\n};\n1";
1389
1390 $todo{$base} = \%ext;
1391 }
1392
1393 my %done;
1394 while (%todo) {
1395 my $progress;
1396
1397 while (my ($k, $v) = each %todo) {
1398 for (split /,\s*/, $v->{meta}{depends}) {
1399 goto skip
1400 unless exists $done{$_};
1401 }
1402
1403 warn "... loading '$k' into '$v->{pkg}'\n";
1404
1405 unless (eval $v->{source}) {
1406 my $msg = $@ ? "$v->{path}: $@\n"
1407 : "$v->{base}: extension inactive.\n";
1408
1409 if (exists $v->{meta}{mandatory}) {
1410 warn $msg;
1411 cf::cleanup "mandatory extension failed to load, exiting.";
1412 }
1413
1414 warn $msg;
1415 }
1416
1417 $done{$k} = delete $todo{$k};
1418 push @EXTS, $v->{pkg};
1419 $progress = 1;
1420 }
1421
1422 skip:
1423 die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
1424 unless $progress;
1425 }
1426 };
1427}
1428
1429#############################################################################
1430
1431=back
1432
1433=head2 CORE EXTENSIONS
1434
1435Functions and methods that extend core deliantra objects.
1436
1437=cut
1438
1439package cf::player;
1440
1441use Coro::AIO;
1442
1443=head3 cf::player
1444
1445=over 4
1446
1447=item cf::player::num_playing
1448
1449Returns the official number of playing players, as per the Crossfire metaserver rules.
1450
1451=cut
1452
1453sub num_playing {
1454 scalar grep
1455 $_->ob->map
1456 && !$_->hidden
1457 && !$_->ob->flag (cf::FLAG_WIZ),
1458 cf::player::list
1459}
1460
1461=item cf::player::find $login
1462
1463Returns the given player object, loading it if necessary (might block).
1464
1465=cut
1466
1467sub playerdir($) {
1468 "$PLAYERDIR/"
1469 . (ref $_[0] ? $_[0]->ob->name : $_[0])
1470}
1471
1472sub path($) {
1473 my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
1474
1475 (playerdir $login) . "/playerdata"
1476}
1477
1478sub find_active($) {
1479 $cf::PLAYER{$_[0]}
1480 and $cf::PLAYER{$_[0]}->active
1481 and $cf::PLAYER{$_[0]}
1482}
1483
1484sub exists($) {
1485 my ($login) = @_;
1486
1487 $cf::PLAYER{$login}
1488 or !aio_stat path $login
1489}
1490
1491sub find($) {
1492 return $cf::PLAYER{$_[0]} || do {
1493 my $login = $_[0];
1494
1495 my $guard = cf::lock_acquire "user_find:$login";
1496
1497 $cf::PLAYER{$_[0]} || do {
1498 # rename old playerfiles to new ones
1499 #TODO: remove when no longer required
1500 aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
1501 aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
1502 aio_unlink +(playerdir $login) . "/$login.pl.pst";
1503 aio_unlink +(playerdir $login) . "/$login.pl";
1504
1505 my $f = new_from_file cf::object::thawer path $login
1506 or return;
1507
1508 my $pl = cf::player::load_pl $f
1509 or return;
1510
1511 local $cf::PLAYER_LOADING{$login} = $pl;
1512 $f->resolve_delayed_derefs;
1513 $cf::PLAYER{$login} = $pl
1514 }
1515 }
1516}
1517
1518sub save($) {
1519 my ($pl) = @_;
1520
1521 return if $pl->{deny_save};
1522
1523 my $path = path $pl;
1524 my $guard = cf::lock_acquire "user_save:$path";
1525
1526 return if $pl->{deny_save};
1527
1528 aio_mkdir playerdir $pl, 0770;
1529 $pl->{last_save} = $cf::RUNTIME;
1530
1531 cf::get_slot 0.01;
1532
1533 $pl->save_pl ($path);
1534 cf::cede_to_tick;
1535}
1536
1537sub new($) {
1538 my ($login) = @_;
1539
1540 my $self = create;
1541
1542 $self->ob->name ($login);
1543 $self->{deny_save} = 1;
1544
1545 $cf::PLAYER{$login} = $self;
1546
1547 $self
1548}
1549
1550=item $player->send_msg ($channel, $msg, $color, [extra...])
1551
1552=cut
1553
1554sub send_msg {
1555 my $ns = shift->ns
1556 or return;
1557 $ns->send_msg (@_);
1558}
1559
1560=item $pl->quit_character
1561
1562Nukes the player without looking back. If logged in, the connection will
1563be destroyed. May block for a long time.
1564
1565=cut
1566
1567sub quit_character {
1568 my ($pl) = @_;
1569
1570 my $name = $pl->ob->name;
1571
1572 $pl->{deny_save} = 1;
1573 $pl->password ("*"); # this should lock out the player until we have nuked the dir
1574
1575 $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1576 $pl->deactivate;
1577 my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
1578 $pl->ob->check_score;
1579 $pl->invoke (cf::EVENT_PLAYER_QUIT);
1580 $pl->ns->destroy if $pl->ns;
1581
1582 my $path = playerdir $pl;
1583 my $temp = "$path~$cf::RUNTIME~deleting~";
1584 aio_rename $path, $temp;
1585 delete $cf::PLAYER{$pl->ob->name};
1586 $pl->destroy;
1587
1588 my $prefix = qr<^~\Q$name\E/>;
1589
1590 # nuke player maps
1591 $cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
1592
1593 IO::AIO::aio_rmtree $temp;
1594}
1595
1596=item $pl->kick
1597
1598Kicks a player out of the game. This destroys the connection.
1599
1600=cut
1601
1602sub kick {
1603 my ($pl, $kicker) = @_;
1604
1605 $pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
1606 $pl->killer ("kicked");
1607 $pl->ns->destroy;
1608}
1609
1610=item cf::player::list_logins
1611
1612Returns am arrayref of all valid playernames in the system, can take a
1613while and may block, so not sync_job-capable, ever.
1614
1615=cut
1616
1617sub list_logins {
1618 my $dirs = aio_readdir $PLAYERDIR
1619 or return [];
1620
1621 my @logins;
1622
1623 for my $login (@$dirs) {
1624 my $path = path $login;
1625
1626 # a .pst is a dead give-away for a valid player
1627 # if no pst file found, open and chekc for blocked users
1628 if (aio_stat "$path.pst") {
1629 my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
1630 aio_read $fh, 0, 512, my $buf, 0 or next;
1631 $buf !~ /^password -------------$/m or next; # official not-valid tag
1632 }
1633
1634 utf8::decode $login;
1635 push @logins, $login;
1636 }
1637
1638 \@logins
1639}
1640
1641=item $player->maps
1642
1643Returns an arrayref of map paths that are private for this
1644player. May block.
1645
1646=cut
1647
1648sub maps($) {
1649 my ($pl) = @_;
1650
1651 $pl = ref $pl ? $pl->ob->name : $pl;
1652
1653 my $files = aio_readdir playerdir $pl
1654 or return;
1655
1656 my @paths;
1657
1658 for (@$files) {
1659 utf8::decode $_;
1660 next if /\.(?:pl|pst)$/;
1661 next unless /^$PATH_SEP/o;
1662
1663 push @paths, cf::map::normalise "~$pl/$_";
1664 }
1665
1666 \@paths
1667}
1668
1669=item $protocol_xml = $player->expand_cfpod ($cfpod)
1670
1671Expand deliantra pod fragments into protocol xml.
1672
1673=item $player->ext_reply ($msgid, @msg)
1674
1675Sends an ext reply to the player.
1676
1677=cut
1678
1679sub ext_reply($$@) {
1680 my ($self, $id, @msg) = @_;
1681
1682 $self->ns->ext_reply ($id, @msg)
1683}
1684
1685=item $player->ext_msg ($type, @msg)
1686
1687Sends an ext event to the client.
1688
1689=cut
1690
1691sub ext_msg($$@) {
1692 my ($self, $type, @msg) = @_;
1693
1694 $self->ns->ext_msg ($type, @msg);
1695}
1696
1697=head3 cf::region
1698
1699=over 4
1700
1701=cut
1702
1703package cf::region;
1704
1705=item cf::region::find_by_path $path
1706
1707Tries to decuce the likely region for a map knowing only its path.
1708
1709=cut
1710
1711sub find_by_path($) {
1712 my ($path) = @_;
1713
1714 my ($match, $specificity);
1715
1716 for my $region (list) {
1717 if ($region->{match} && $path =~ $region->{match}) {
1718 ($match, $specificity) = ($region, $region->specificity)
1719 if $region->specificity > $specificity;
1720 }
1721 }
1722
1723 $match
1724}
1725
1726=back
1727
1728=head3 cf::map
1729
1730=over 4
1731
1732=cut
1733
1734package cf::map;
1735
1736use Fcntl;
1737use Coro::AIO;
1738
1739use overload
1740 '""' => \&as_string,
1741 fallback => 1;
1742
1743our $MAX_RESET = 3600;
1744our $DEFAULT_RESET = 3000;
1745
1746sub generate_random_map {
1747 my ($self, $rmp) = @_;
1748
1749 my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
1750
1751 # mit "rum" bekleckern, nicht
1752 $self->_create_random_map (
1753 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1754 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1755 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1756 $rmp->{exit_on_final_map},
1757 $rmp->{xsize}, $rmp->{ysize},
1758 $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1759 $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1760 $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1761 $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1762 $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1763 (cf::region::find $rmp->{region}), $rmp->{custom}
1764 )
1765}
1766
1767=item cf::map->register ($regex, $prio)
1768
1769Register a handler for the map path matching the given regex at the
1770givne priority (higher is better, built-in handlers have priority 0, the
1771default).
1772
1773=cut
138 1774
139sub register { 1775sub register {
1776 my (undef, $regex, $prio) = @_;
1777 my $pkg = caller;
1778
1779 no strict;
1780 push @{"$pkg\::ISA"}, __PACKAGE__;
1781
1782 $EXT_MAP{$pkg} = [$prio, qr<$regex>];
1783}
1784
1785# also paths starting with '/'
1786$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
1787
1788sub thawer_merge {
140 my ($base, $pkg) = @_; 1789 my ($self, $merge) = @_;
141 1790
142 for my $idx (0 .. $#EVENT) { 1791 # we have to keep some variables in memory intact
143 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) { 1792 local $self->{path};
144 #warn "registering $EVENT[$idx] hook to '$pkg'\n"; 1793 local $self->{load_path};
145 $hook[$idx]{$base} = $ref;
146 }
147 }
148}
149 1794
150sub load_extension { 1795 $self->SUPER::thawer_merge ($merge);
1796}
1797
1798sub normalise {
151 my ($path) = @_; 1799 my ($path, $base) = @_;
152 1800
153 $path =~ /([^\/\\]+)\.ext$/ or die "$path"; 1801 $path = "$path"; # make sure its a string
154 my $base = $1;
155 my $pkg = $1;
156 $pkg =~ s/[^[:word:]]/_/g;
157 $pkg = "cf::ext::$pkg";
158 1802
159 warn "loading '$path' into '$pkg'\n"; 1803 $path =~ s/\.map$//;
160 1804
161 open my $fh, "<:utf8", $path 1805 # map plan:
162 or die "$path: $!"; 1806 #
1807 # /! non-realised random map exit (special hack!)
1808 # {... are special paths that are not being touched
1809 # ?xxx/... are special absolute paths
1810 # ?random/... random maps
1811 # /... normal maps
1812 # ~user/... per-player map of a specific user
163 1813
164 my $source = 1814 $path =~ s/$PATH_SEP/\//go;
165 "package $pkg; use strict; use utf8;\n"
166 . "#line 1 \"$path\"\n{\n"
167 . (do { local $/; <$fh> })
168 . "\n};\n1";
169 1815
170 eval $source 1816 # treat it as relative path if it starts with
171 or die "$path: $@"; 1817 # something that looks reasonable
1818 if ($path =~ m{^(?:\./|\.\./|\w)}) {
1819 $base or Carp::carp "normalise called with relative path and no base: '$path'";
172 1820
173 push @exts, $pkg; 1821 $base =~ s{[^/]+/?$}{};
174 $ext_pkg{$base} = $pkg; 1822 $path = "$base/$path";
1823 }
175 1824
176# no strict 'refs'; 1825 for ($path) {
177# @{"$pkg\::ISA"} = ext::; 1826 redo if s{//}{/};
1827 redo if s{/\.?/}{/};
1828 redo if s{/[^/]+/\.\./}{/};
1829 }
178 1830
179 register $base, $pkg; 1831 $path
180} 1832}
181 1833
182sub unload_extension { 1834sub new_from_path {
1835 my (undef, $path, $base) = @_;
1836
1837 return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
1838
1839 $path = normalise $path, $base;
1840
1841 for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
1842 if ($path =~ $EXT_MAP{$pkg}[1]) {
1843 my $self = bless cf::map::new, $pkg;
1844 $self->{path} = $path; $self->path ($path);
1845 $self->init; # pass $1 etc.
1846 return $self;
1847 }
1848 }
1849
1850 Carp::cluck "unable to resolve path '$path' (base '$base').";
1851 ()
1852}
1853
1854sub init {
183 my ($pkg) = @_; 1855 my ($self) = @_;
184 1856
185 warn "removing extension $pkg\n"; 1857 $self
1858}
186 1859
187 # remove hooks 1860sub as_string {
188 for my $idx (0 .. $#EVENT) { 1861 my ($self) = @_;
189 delete $hook[$idx]{$pkg}; 1862
1863 "$self->{path}"
1864}
1865
1866# the displayed name, this is a one way mapping
1867sub visible_name {
1868 &as_string
1869}
1870
1871# the original (read-only) location
1872sub load_path {
1873 my ($self) = @_;
1874
1875 "$MAPDIR/$self->{path}.map"
1876}
1877
1878# the temporary/swap location
1879sub save_path {
1880 my ($self) = @_;
1881
1882 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1883 "$TMPDIR/$path.map"
1884}
1885
1886# the unique path, undef == no special unique path
1887sub uniq_path {
1888 my ($self) = @_;
1889
1890 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1891 "$UNIQUEDIR/$path"
1892}
1893
1894sub decay_objects {
1895 my ($self) = @_;
1896
1897 return if $self->{deny_reset};
1898
1899 $self->do_decay_objects;
1900}
1901
1902sub unlink_save {
1903 my ($self) = @_;
1904
1905 utf8::encode (my $save = $self->save_path);
1906 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1907 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1908}
1909
1910sub load_header_from($) {
1911 my ($self, $path) = @_;
1912
1913 utf8::encode $path;
1914 my $f = new_from_file cf::object::thawer $path
1915 or return;
1916
1917 $self->_load_header ($f)
1918 or return;
1919
1920 local $MAP_LOADING{$self->{path}} = $self;
1921 $f->resolve_delayed_derefs;
1922
1923 $self->{load_path} = $path;
1924
190 } 1925 1
1926}
191 1927
192 # remove commands 1928sub load_header_orig {
193 for my $name (keys %command) { 1929 my ($self) = @_;
194 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
195 1930
196 if (@cb) { 1931 $self->load_header_from ($self->load_path)
197 $command{$name} = \@cb; 1932}
198 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb; 1933
1934sub load_header_temp {
1935 my ($self) = @_;
1936
1937 $self->load_header_from ($self->save_path)
1938}
1939
1940sub prepare_temp {
1941 my ($self) = @_;
1942
1943 $self->last_access ((delete $self->{last_access})
1944 || $cf::RUNTIME); #d#
1945 # safety
1946 $self->{instantiate_time} = $cf::RUNTIME
1947 if $self->{instantiate_time} > $cf::RUNTIME;
1948}
1949
1950sub prepare_orig {
1951 my ($self) = @_;
1952
1953 $self->{load_original} = 1;
1954 $self->{instantiate_time} = $cf::RUNTIME;
1955 $self->last_access ($cf::RUNTIME);
1956 $self->instantiate;
1957}
1958
1959sub load_header {
1960 my ($self) = @_;
1961
1962 if ($self->load_header_temp) {
1963 $self->prepare_temp;
199 } else { 1964 } else {
200 delete $command{$name}; 1965 $self->load_header_orig
201 delete $COMMAND{"$name\000"}; 1966 or return;
202 } 1967 $self->prepare_orig;
1968 }
1969
1970 $self->{deny_reset} = 1
1971 if $self->no_reset;
1972
1973 $self->default_region (cf::region::find_by_path $self->{path})
1974 unless $self->default_region;
1975
203 } 1976 1
1977}
204 1978
205 # remove extcmds 1979sub find;
206 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) { 1980sub find {
207 delete $extcmd{$name}; 1981 my ($path, $origin) = @_;
1982
1983 $path = normalise $path, $origin && $origin->path;
1984
1985 my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
1986 my $guard2 = cf::lock_acquire "map_find:$path";
1987
1988 $cf::MAP{$path} || do {
1989 my $map = new_from_path cf::map $path
1990 or return;
1991
1992 $map->{last_save} = $cf::RUNTIME;
1993
1994 $map->load_header
1995 or return;
1996
1997 if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1998 # doing this can freeze the server in a sync job, obviously
1999 #$cf::WAIT_FOR_TICK->wait;
2000 undef $guard2;
2001 undef $guard1;
2002 $map->reset;
2003 return find $path;
2004 }
2005
2006 $cf::MAP{$path} = $map
2007 }
2008}
2009
2010sub pre_load { }
2011sub post_load { }
2012
2013sub load {
2014 my ($self) = @_;
2015
2016 local $self->{deny_reset} = 1; # loading can take a long time
2017
2018 my $path = $self->{path};
2019
208 } 2020 {
2021 my $guard = cf::lock_acquire "map_data:$path";
209 2022
210 if (my $cb = $pkg->can ("on_unload")) { 2023 return unless $self->valid;
211 eval { 2024 return unless $self->in_memory == cf::MAP_SWAPPED;
212 $cb->($pkg); 2025
2026 $self->in_memory (cf::MAP_LOADING);
2027
2028 $self->alloc;
2029
2030 $self->pre_load;
2031 cf::cede_to_tick;
2032
2033 my $f = new_from_file cf::object::thawer $self->{load_path};
2034 $f->skip_block;
2035 $self->_load_objects ($f)
2036 or return;
2037
2038 $self->post_load_original
2039 if delete $self->{load_original};
2040
2041 if (my $uniq = $self->uniq_path) {
2042 utf8::encode $uniq;
2043 unless (aio_stat $uniq) {
2044 if (my $f = new_from_file cf::object::thawer $uniq) {
2045 $self->clear_unique_items;
2046 $self->_load_objects ($f);
2047 $f->resolve_delayed_derefs;
213 1 2048 }
214 } or warn "$pkg unloaded, but with errors: $@";
215 }
216
217 Symbol::delete_package $pkg;
218}
219
220sub load_extensions {
221 my $LIBDIR = maps_directory "perl";
222
223 for my $ext (<$LIBDIR/*.ext>) {
224 next unless -r $ext;
225 eval {
226 load_extension $ext;
227 1
228 } or warn "$ext not loaded: $@";
229 }
230}
231
232register_command "perl-reload", 0, sub {
233 my ($who, $arg) = @_;
234
235 if ($who->flag (FLAG_WIZ)) {
236 $who->message ("reloading...");
237
238 warn "reloading...\n";
239 eval {
240 # 1. cancel all watchers
241 $_->cancel for Event::all_watchers;
242
243 # 2. unload all extensions
244 for (@exts) {
245 $who->message ("unloading <$_>");
246 unload_extension $_;
247 } 2049 }
2050 }
248 2051
249 # 3. unload all modules loaded from $LIBDIR 2052 $f->resolve_delayed_derefs;
2053
2054 cf::cede_to_tick;
2055 # now do the right thing for maps
2056 $self->link_multipart_objects;
2057 $self->difficulty ($self->estimate_difficulty)
2058 unless $self->difficulty;
2059 cf::cede_to_tick;
2060
2061 unless ($self->{deny_activate}) {
2062 $self->decay_objects;
2063 $self->fix_auto_apply;
2064 $self->update_buttons;
2065 cf::cede_to_tick;
2066 $self->activate;
2067 }
2068
2069 $self->{last_save} = $cf::RUNTIME;
2070 $self->last_access ($cf::RUNTIME);
2071
2072 $self->in_memory (cf::MAP_ACTIVE);
2073 }
2074
2075 $self->post_load;
2076}
2077
2078sub customise_for {
2079 my ($self, $ob) = @_;
2080
2081 return find "~" . $ob->name . "/" . $self->{path}
2082 if $self->per_player;
2083
2084# return find "?party/" . $ob->name . "/" . $self->{path}
2085# if $self->per_party;
2086
2087 $self
2088}
2089
2090# find and load all maps in the 3x3 area around a map
2091sub load_neighbours {
2092 my ($map) = @_;
2093
2094 my @neigh; # diagonal neighbours
2095
2096 for (0 .. 3) {
2097 my $neigh = $map->tile_path ($_)
2098 or next;
2099 $neigh = find $neigh, $map
2100 or next;
2101 $neigh->load;
2102
2103 push @neigh,
2104 [$neigh->tile_path (($_ + 3) % 4), $neigh],
2105 [$neigh->tile_path (($_ + 1) % 4), $neigh];
2106 }
2107
2108 for (grep defined $_->[0], @neigh) {
2109 my ($path, $origin) = @$_;
2110 my $neigh = find $path, $origin
2111 or next;
2112 $neigh->load;
2113 }
2114}
2115
2116sub find_sync {
2117 my ($path, $origin) = @_;
2118
2119 cf::sync_job { find $path, $origin }
2120}
2121
2122sub do_load_sync {
2123 my ($map) = @_;
2124
2125 cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
2126 if $Coro::current == $Coro::main;
2127
2128 cf::sync_job { $map->load };
2129}
2130
2131our %MAP_PREFETCH;
2132our $MAP_PREFETCHER = undef;
2133
2134sub find_async {
2135 my ($path, $origin, $load) = @_;
2136
2137 $path = normalise $path, $origin && $origin->{path};
2138
2139 if (my $map = $cf::MAP{$path}) {
2140 return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
2141 }
2142
2143 $MAP_PREFETCH{$path} |= $load;
2144
2145 $MAP_PREFETCHER ||= cf::async {
2146 $Coro::current->{desc} = "map prefetcher";
2147
2148 while (%MAP_PREFETCH) {
250 while (my ($k, $v) = each %INC) { 2149 while (my ($k, $v) = each %MAP_PREFETCH) {
251 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/; 2150 if (my $map = find $k) {
252 2151 $map->load if $v;
253 $who->message ("removing <$k>");
254 delete $INC{$k};
255
256 $k =~ s/\.pm$//;
257 $k =~ s/\//::/g;
258
259 if (my $cb = $k->can ("unload_module")) {
260 $cb->();
261 } 2152 }
262 2153
263 Symbol::delete_package $k; 2154 delete $MAP_PREFETCH{$k};
264 } 2155 }
265
266 # 4. get rid of ext::, as good as possible
267 Symbol::delete_package "ext::$_"
268 for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
269
270 # 5. remove register_script_function callbacks
271 # TODO
272
273 # 6. unload cf.pm "a bit"
274 delete $INC{"cf.pm"};
275
276 # don't, removes xs symbols, too
277 #Symbol::delete_package __PACKAGE__;
278
279 # 7. reload cf.pm
280 $who->message ("reloading cf.pm");
281 require cf;
282 }; 2156 }
283 warn $@ if $@; 2157 undef $MAP_PREFETCHER;
284 $who->message ($@) if $@; 2158 };
285 warn "reloaded\n"; 2159 $MAP_PREFETCHER->prio (6);
286 2160
287 $who->message ("reloaded"); 2161 ()
2162}
2163
2164sub save {
2165 my ($self) = @_;
2166
2167 my $lock = cf::lock_acquire "map_data:$self->{path}";
2168
2169 $self->{last_save} = $cf::RUNTIME;
2170
2171 return unless $self->dirty;
2172
2173 my $save = $self->save_path; utf8::encode $save;
2174 my $uniq = $self->uniq_path; utf8::encode $uniq;
2175
2176 $self->{load_path} = $save;
2177
2178 return if $self->{deny_save};
2179
2180 local $self->{last_access} = $self->last_access;#d#
2181
2182 cf::async {
2183 $Coro::current->{desc} = "map player save";
2184 $_->contr->save for $self->players;
2185 };
2186
2187 cf::get_slot 0.02;
2188
2189 if ($uniq) {
2190 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
2191 $self->_save_objects ($uniq, cf::IO_UNIQUES);
288 } else { 2192 } else {
289 $who->message ("Intruder Alert!"); 2193 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
290 } 2194 }
291};
292
293#############################################################################
294# utility functions
295
296use JSON::Syck (); # TODO# replace by JSON::PC once working
297
298sub from_json($) {
299 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
300 JSON::Syck::Load $_[0]
301} 2195}
302 2196
303sub to_json($) { 2197sub swap_out {
304 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
305 JSON::Syck::Dump $_[0]
306}
307
308#############################################################################
309# extcmd framework, basically convert ext <msg>
310# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
311
312sub on_extcmd {
313 my ($pl, $buf) = @_; 2198 my ($self) = @_;
314 2199
315 my $msg = eval { from_json $buf }; 2200 # save first because save cedes
2201 $self->save;
316 2202
317 if (ref $msg) { 2203 my $lock = cf::lock_acquire "map_data:$self->{path}";
318 if (my $cb = $extcmd{$msg->{msgtype}}) { 2204
319 if (my %reply = $cb->[0]->($pl, $msg)) { 2205 return if $self->players;
320 $pl->ext_reply ($msg->{msgid}, %reply); 2206 return if $self->in_memory != cf::MAP_ACTIVE;
321 } 2207 return if $self->{deny_save};
322 } 2208
2209 $self->in_memory (cf::MAP_SWAPPED);
2210
2211 $self->deactivate;
2212 $_->clear_links_to ($self) for values %cf::MAP;
2213 $self->clear;
2214}
2215
2216sub reset_at {
2217 my ($self) = @_;
2218
2219 # TODO: safety, remove and allow resettable per-player maps
2220 return 1e99 if $self->{deny_reset};
2221
2222 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
2223 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
2224
2225 $time + $to
2226}
2227
2228sub should_reset {
2229 my ($self) = @_;
2230
2231 $self->reset_at <= $cf::RUNTIME
2232}
2233
2234sub reset {
2235 my ($self) = @_;
2236
2237 my $lock = cf::lock_acquire "map_data:$self->{path}";
2238
2239 return if $self->players;
2240
2241 warn "resetting map ", $self->path, "\n";
2242
2243 $self->in_memory (cf::MAP_SWAPPED);
2244
2245 # need to save uniques path
2246 unless ($self->{deny_save}) {
2247 my $uniq = $self->uniq_path; utf8::encode $uniq;
2248
2249 $self->_save_objects ($uniq, cf::IO_UNIQUES)
2250 if $uniq;
2251 }
2252
2253 delete $cf::MAP{$self->path};
2254
2255 $self->deactivate;
2256 $_->clear_links_to ($self) for values %cf::MAP;
2257 $self->clear;
2258
2259 $self->unlink_save;
2260 $self->destroy;
2261}
2262
2263my $nuke_counter = "aaaa";
2264
2265sub nuke {
2266 my ($self) = @_;
2267
2268 {
2269 my $lock = cf::lock_acquire "map_data:$self->{path}";
2270
2271 delete $cf::MAP{$self->path};
2272
2273 $self->unlink_save;
2274
2275 bless $self, "cf::map";
2276 delete $self->{deny_reset};
2277 $self->{deny_save} = 1;
2278 $self->reset_timeout (1);
2279 $self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
2280
2281 $cf::MAP{$self->path} = $self;
2282 }
2283
2284 $self->reset; # polite request, might not happen
2285}
2286
2287=item $maps = cf::map::tmp_maps
2288
2289Returns an arrayref with all map paths of currently instantiated and saved
2290maps. May block.
2291
2292=cut
2293
2294sub tmp_maps() {
2295 [
2296 map {
2297 utf8::decode $_;
2298 /\.map$/
2299 ? normalise $_
2300 : ()
2301 } @{ aio_readdir $TMPDIR or [] }
2302 ]
2303}
2304
2305=item $maps = cf::map::random_maps
2306
2307Returns an arrayref with all map paths of currently instantiated and saved
2308random maps. May block.
2309
2310=cut
2311
2312sub random_maps() {
2313 [
2314 map {
2315 utf8::decode $_;
2316 /\.map$/
2317 ? normalise "?random/$_"
2318 : ()
2319 } @{ aio_readdir $RANDOMDIR or [] }
2320 ]
2321}
2322
2323=item cf::map::unique_maps
2324
2325Returns an arrayref of paths of all shared maps that have
2326instantiated unique items. May block.
2327
2328=cut
2329
2330sub unique_maps() {
2331 [
2332 map {
2333 utf8::decode $_;
2334 s/\.map$//; # TODO future compatibility hack
2335 /\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
2336 ? ()
2337 : normalise $_
2338 } @{ aio_readdir $UNIQUEDIR or [] }
2339 ]
2340}
2341
2342=back
2343
2344=head3 cf::object
2345
2346=cut
2347
2348package cf::object;
2349
2350=over 4
2351
2352=item $ob->inv_recursive
2353
2354Returns the inventory of the object I<and> their inventories, recursively,
2355but I<not> the object itself.
2356
2357=cut
2358
2359sub inv_recursive_;
2360sub inv_recursive_ {
2361 map { $_, inv_recursive_ $_->inv } @_
2362}
2363
2364sub inv_recursive {
2365 inv_recursive_ inv $_[0]
2366}
2367
2368=item $ref = $ob->ref
2369
2370Creates and returns a persistent reference to an object that can be stored as a string.
2371
2372=item $ob = cf::object::deref ($refstring)
2373
2374returns the objetc referenced by refstring. may return undef when it cnanot find the object,
2375even if the object actually exists. May block.
2376
2377=cut
2378
2379sub deref {
2380 my ($ref) = @_;
2381
2382 if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
2383 my ($uuid, $name) = ($1, $2);
2384 my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
2385 or return;
2386 $pl->ob->uuid eq $uuid
2387 or return;
2388
2389 $pl->ob
323 } else { 2390 } else {
324 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n"; 2391 warn "$ref: cannot resolve object reference\n";
325 } 2392 undef
326
327 1 2393 }
328} 2394}
329 2395
330############################################################################# 2396package cf;
331# load/save/clean perl data associated with a map
332 2397
333*on_mapclean = sub { 2398=back
334 my ($map) = @_;
335 2399
336 my $path = $map->tmpname; 2400=head3 cf::object::player
337 defined $path or return;
338 2401
339 unlink "$path.cfperl"; 2402=over 4
340};
341 2403
342*on_mapin =
343*on_mapload = sub {
344 my ($map) = @_;
345
346 my $path = $map->tmpname;
347 $path = $map->path unless defined $path;
348
349 open my $fh, "<:raw", "$path.cfperl"
350 or return; # no perl data
351
352 my $data = Storable::thaw do { local $/; <$fh> };
353
354 $data->{version} <= 1
355 or return; # too new
356
357 $map->_set_obs ($data->{obs});
358};
359
360*on_mapout = sub {
361 my ($map) = @_;
362
363 my $path = $map->tmpname;
364 $path = $map->path unless defined $path;
365
366 my $obs = $map->_get_obs;
367
368 if (defined $obs) {
369 open my $fh, ">:raw", "$path.cfperl"
370 or die "$path.cfperl: $!";
371
372 stat $path;
373
374 print $fh Storable::nfreeze {
375 size => (stat _)[7],
376 time => (stat _)[9],
377 version => 1,
378 obs => $obs,
379 };
380
381 chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
382 } else {
383 unlink "$path.cfperl";
384 }
385};
386
387#############################################################################
388# load/save perl data associated with player->ob objects
389
390sub all_objects(@) {
391 @_, map all_objects ($_->inv), @_
392}
393
394*on_player_load = sub {
395 my ($ob, $path) = @_;
396
397 for my $o (all_objects $ob) {
398 if (my $value = $o->get_ob_key_value ("_perl_data")) {
399 $o->set_ob_key_value ("_perl_data");
400
401 %$o = %{ Storable::thaw pack "H*", $value };
402 }
403 }
404};
405
406*on_player_save = sub {
407 my ($ob, $path) = @_;
408
409 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
410 for grep %$_, all_objects $ob;
411};
412
413#############################################################################
414# core extensions - in perl
415
416=item cf::player::exists $login
417
418Returns true when the given account exists.
419
420=cut
421
422sub cf::player::exists($) {
423 cf::player::find $_[0]
424 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
425}
426
427=item $player->reply ($npc, $msg[, $flags]) 2404=item $player_object->reply ($npc, $msg[, $flags])
428 2405
429Sends a message to the player, as if the npc C<$npc> replied. C<$npc> 2406Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
430can be C<undef>. Does the right thing when the player is currently in a 2407can be C<undef>. Does the right thing when the player is currently in a
431dialogue with the given NPC character. 2408dialogue with the given NPC character.
432 2409
433=cut 2410=cut
434 2411
2412our $SAY_CHANNEL = {
2413 id => "say",
2414 title => "Map",
2415 reply => "say ",
2416 tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
2417};
2418
2419our $CHAT_CHANNEL = {
2420 id => "chat",
2421 title => "Chat",
2422 reply => "chat ",
2423 tooltip => "Player chat and shouts, global to the server.",
2424};
2425
435# rough implementation of a future "reply" method that works 2426# rough implementation of a future "reply" method that works
436# with dialog boxes. 2427# with dialog boxes.
2428#TODO: the first argument must go, split into a $npc->reply_to ( method
437sub cf::object::player::reply($$$;$) { 2429sub cf::object::player::reply($$$;$) {
438 my ($self, $npc, $msg, $flags) = @_; 2430 my ($self, $npc, $msg, $flags) = @_;
439 2431
440 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4; 2432 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
441 2433
442 if ($self->{record_replies}) { 2434 if ($self->{record_replies}) {
443 push @{ $self->{record_replies} }, [$npc, $msg, $flags]; 2435 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
2436
444 } else { 2437 } else {
2438 my $pl = $self->contr;
2439
2440 if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
2441 my $dialog = $pl->{npc_dialog};
2442 $dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
2443
2444 } else {
445 $msg = $npc->name . " says: $msg" if $npc; 2445 $msg = $npc->name . " says: $msg" if $npc;
446 $self->message ($msg, $flags); 2446 $self->send_msg ($SAY_CHANNEL => $msg, $flags);
2447 }
2448 }
2449}
2450
2451=item $object->send_msg ($channel, $msg, $color, [extra...])
2452
2453=cut
2454
2455sub cf::object::send_msg {
2456 my $pl = shift->contr
2457 or return;
2458 $pl->send_msg (@_);
2459}
2460
2461=item $player_object->may ("access")
2462
2463Returns wether the given player is authorized to access resource "access"
2464(e.g. "command_wizcast").
2465
2466=cut
2467
2468sub cf::object::player::may {
2469 my ($self, $access) = @_;
2470
2471 $self->flag (cf::FLAG_WIZ) ||
2472 (ref $cf::CFG{"may_$access"}
2473 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
2474 : $cf::CFG{"may_$access"})
2475}
2476
2477=item $player_object->enter_link
2478
2479Freezes the player and moves him/her to a special map (C<{link}>).
2480
2481The player should be reasonably safe there for short amounts of time (e.g.
2482for loading a map). You I<MUST> call C<leave_link> as soon as possible,
2483though, as the palyer cannot control the character while it is on the link
2484map.
2485
2486Will never block.
2487
2488=item $player_object->leave_link ($map, $x, $y)
2489
2490Moves the player out of the special C<{link}> map onto the specified
2491map. If the map is not valid (or omitted), the player will be moved back
2492to the location he/she was before the call to C<enter_link>, or, if that
2493fails, to the emergency map position.
2494
2495Might block.
2496
2497=cut
2498
2499sub link_map {
2500 unless ($LINK_MAP) {
2501 $LINK_MAP = cf::map::find "{link}"
2502 or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
2503 $LINK_MAP->load;
2504 }
2505
2506 $LINK_MAP
2507}
2508
2509sub cf::object::player::enter_link {
2510 my ($self) = @_;
2511
2512 $self->deactivate_recursive;
2513
2514 return if UNIVERSAL::isa $self->map, "ext::map_link";
2515
2516 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
2517 if $self->map && $self->map->{path} ne "{link}";
2518
2519 $self->enter_map ($LINK_MAP || link_map, 10, 10);
2520}
2521
2522sub cf::object::player::leave_link {
2523 my ($self, $map, $x, $y) = @_;
2524
2525 return unless $self->contr->active;
2526
2527 my $link_pos = delete $self->{_link_pos};
2528
2529 unless ($map) {
2530 # restore original map position
2531 ($map, $x, $y) = @{ $link_pos || [] };
2532 $map = cf::map::find $map;
2533
2534 unless ($map) {
2535 ($map, $x, $y) = @$EMERGENCY_POSITION;
2536 $map = cf::map::find $map
2537 or die "FATAL: cannot load emergency map\n";
2538 }
2539 }
2540
2541 ($x, $y) = (-1, -1)
2542 unless (defined $x) && (defined $y);
2543
2544 # use -1 or undef as default coordinates, not 0, 0
2545 ($x, $y) = ($map->enter_x, $map->enter_y)
2546 if $x <=0 && $y <= 0;
2547
2548 $map->load;
2549 $map->load_neighbours;
2550
2551 return unless $self->contr->active;
2552
2553 local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
2554 $self->enter_map ($map, $x, $y);
2555
2556 # only activate afterwards, to support waiting in hooks
2557 $self->activate_recursive;
2558}
2559
2560=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
2561
2562Moves the player to the given map-path and coordinates by first freezing
2563her, loading and preparing them map, calling the provided $check callback
2564that has to return the map if sucecssful, and then unfreezes the player on
2565the new (success) or old (failed) map position. In either case, $done will
2566be called at the end of this process.
2567
2568Note that $check will be called with a potentially non-loaded map, so if
2569it needs a loaded map it has to call C<< ->load >>.
2570
2571=cut
2572
2573our $GOTOGEN;
2574
2575sub cf::object::player::goto {
2576 my ($self, $path, $x, $y, $check, $done) = @_;
2577
2578 # do generation counting so two concurrent goto's will be executed in-order
2579 my $gen = $self->{_goto_generation} = ++$GOTOGEN;
2580
2581 $self->enter_link;
2582
2583 (async {
2584 $Coro::current->{desc} = "player::goto $path $x $y";
2585
2586 # *tag paths override both path and x|y
2587 if ($path =~ /^\*(.*)$/) {
2588 if (my @obs = grep $_->map, ext::map_tags::find $1) {
2589 my $ob = $obs[rand @obs];
2590
2591 # see if we actually can go there
2592 if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
2593 $ob = $obs[rand @obs];
2594 } else {
2595 $self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
2596 }
2597 # else put us there anyways for now #d#
2598
2599 ($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
2600 } else {
2601 ($path, $x, $y) = (undef, undef, undef);
2602 }
2603 }
2604
2605 my $map = eval {
2606 my $map = defined $path ? cf::map::find $path : undef;
2607
2608 if ($map) {
2609 $map = $map->customise_for ($self);
2610 $map = $check->($map) if $check && $map;
2611 } else {
2612 $self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
2613 }
2614
2615 $map
2616 };
2617
2618 if ($@) {
2619 $self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
2620 LOG llevError | logBacktrace, Carp::longmess $@;
2621 }
2622
2623 if ($gen == $self->{_goto_generation}) {
2624 delete $self->{_goto_generation};
2625 $self->leave_link ($map, $x, $y);
2626 }
2627
2628 $done->() if $done;
2629 })->prio (1);
2630}
2631
2632=item $player_object->enter_exit ($exit_object)
2633
2634=cut
2635
2636sub parse_random_map_params {
2637 my ($spec) = @_;
2638
2639 my $rmp = { # defaults
2640 xsize => (cf::rndm 15, 40),
2641 ysize => (cf::rndm 15, 40),
2642 symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
2643 #layout => string,
447 } 2644 };
448}
449 2645
2646 for (split /\n/, $spec) {
2647 my ($k, $v) = split /\s+/, $_, 2;
2648
2649 $rmp->{lc $k} = $v if (length $k) && (length $v);
2650 }
2651
2652 $rmp
2653}
2654
2655sub prepare_random_map {
2656 my ($exit) = @_;
2657
2658 # all this does is basically replace the /! path by
2659 # a new random map path (?random/...) with a seed
2660 # that depends on the exit object
2661
2662 my $rmp = parse_random_map_params $exit->msg;
2663
2664 if ($exit->map) {
2665 $rmp->{region} = $exit->region->name;
2666 $rmp->{origin_map} = $exit->map->path;
2667 $rmp->{origin_x} = $exit->x;
2668 $rmp->{origin_y} = $exit->y;
2669
2670 $exit->map->touch;
2671 }
2672
2673 $rmp->{random_seed} ||= $exit->random_seed;
2674
2675 my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
2676 my $md5 = Digest::MD5::md5_hex $data;
2677 my $meta = "$RANDOMDIR/$md5.meta";
2678
2679 if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
2680 aio_write $fh, 0, (length $data), $data, 0;
2681 undef $fh;
2682 aio_rename "$meta~", $meta;
2683
2684 my $slaying = "?random/$md5";
2685
2686 if ($exit->valid) {
2687 $exit->slaying ("?random/$md5");
2688 $exit->msg (undef);
2689 }
2690 }
2691}
2692
2693sub cf::object::player::enter_exit {
2694 my ($self, $exit) = @_;
2695
2696 return unless $self->type == cf::PLAYER;
2697
2698 $self->enter_link;
2699
2700 (async {
2701 $Coro::current->{desc} = "enter_exit";
2702
2703 unless (eval {
2704 $self->deactivate_recursive; # just to be sure
2705
2706 # random map handling
2707 {
2708 my $guard = cf::lock_acquire "exit_prepare:$exit";
2709
2710 prepare_random_map $exit
2711 if $exit->slaying eq "/!";
2712 }
2713
2714 my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
2715 my $x = $exit->stats->hp;
2716 my $y = $exit->stats->sp;
2717
2718 $self->goto ($map, $x, $y);
2719
2720 # if exit is damned, update players death & WoR home-position
2721 $self->contr->savebed ($map, $x, $y)
2722 if $exit->flag (cf::FLAG_DAMNED);
2723
2724 1
2725 }) {
2726 $self->message ("Something went wrong deep within the deliantra server. "
2727 . "I'll try to bring you back to the map you were before. "
2728 . "Please report this to the dungeon master!",
2729 cf::NDI_UNIQUE | cf::NDI_RED);
2730
2731 warn "ERROR in enter_exit: $@";
2732 $self->leave_link;
2733 }
2734 })->prio (1);
2735}
2736
2737=head3 cf::client
2738
2739=over 4
2740
2741=item $client->send_drawinfo ($text, $flags)
2742
2743Sends a drawinfo packet to the client. Circumvents output buffering so
2744should not be used under normal circumstances.
2745
2746=cut
2747
2748sub cf::client::send_drawinfo {
2749 my ($self, $text, $flags) = @_;
2750
2751 utf8::encode $text;
2752 $self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2753}
2754
2755=item $client->send_msg ($channel, $msg, $color, [extra...])
2756
2757Send a drawinfo or msg packet to the client, formatting the msg for the
2758client if neccessary. C<$type> should be a string identifying the type of
2759the message, with C<log> being the default. If C<$color> is negative, suppress
2760the message unless the client supports the msg packet.
2761
2762=cut
2763
2764# non-persistent channels (usually the info channel)
2765our %CHANNEL = (
2766 "c/identify" => {
2767 id => "infobox",
2768 title => "Identify",
2769 reply => undef,
2770 tooltip => "Items recently identified",
2771 },
2772 "c/examine" => {
2773 id => "infobox",
2774 title => "Examine",
2775 reply => undef,
2776 tooltip => "Signs and other items you examined",
2777 },
2778 "c/book" => {
2779 id => "infobox",
2780 title => "Book",
2781 reply => undef,
2782 tooltip => "The contents of a note or book",
2783 },
2784 "c/lookat" => {
2785 id => "infobox",
2786 title => "Look",
2787 reply => undef,
2788 tooltip => "What you saw there",
2789 },
2790 "c/who" => {
2791 id => "infobox",
2792 title => "Players",
2793 reply => undef,
2794 tooltip => "Shows players who are currently online",
2795 },
2796 "c/body" => {
2797 id => "infobox",
2798 title => "Body Parts",
2799 reply => undef,
2800 tooltip => "Shows which body parts you posess and are available",
2801 },
2802 "c/statistics" => {
2803 id => "infobox",
2804 title => "Statistics",
2805 reply => undef,
2806 tooltip => "Shows your primary statistics",
2807 },
2808 "c/skills" => {
2809 id => "infobox",
2810 title => "Skills",
2811 reply => undef,
2812 tooltip => "Shows your experience per skill and item power",
2813 },
2814 "c/shopitems" => {
2815 id => "infobox",
2816 title => "Shop Items",
2817 reply => undef,
2818 tooltip => "Shows the items currently for sale in this shop",
2819 },
2820 "c/resistances" => {
2821 id => "infobox",
2822 title => "Resistances",
2823 reply => undef,
2824 tooltip => "Shows your resistances",
2825 },
2826 "c/pets" => {
2827 id => "infobox",
2828 title => "Pets",
2829 reply => undef,
2830 tooltip => "Shows information abotu your pets/a specific pet",
2831 },
2832 "c/perceiveself" => {
2833 id => "infobox",
2834 title => "Perceive Self",
2835 reply => undef,
2836 tooltip => "You gained detailed knowledge about yourself",
2837 },
2838 "c/uptime" => {
2839 id => "infobox",
2840 title => "Uptime",
2841 reply => undef,
2842 tooltip => "How long the server has been running since last restart",
2843 },
2844 "c/mapinfo" => {
2845 id => "infobox",
2846 title => "Map Info",
2847 reply => undef,
2848 tooltip => "Information related to the maps",
2849 },
2850 "c/party" => {
2851 id => "party",
2852 title => "Party",
2853 reply => "gsay ",
2854 tooltip => "Messages and chat related to your party",
2855 },
2856 "c/death" => {
2857 id => "death",
2858 title => "Death",
2859 reply => undef,
2860 tooltip => "Reason for and more info about your most recent death",
2861 },
2862 "c/say" => $SAY_CHANNEL,
2863 "c/chat" => $CHAT_CHANNEL,
2864);
2865
2866sub cf::client::send_msg {
2867 my ($self, $channel, $msg, $color, @extra) = @_;
2868
2869 $msg = $self->pl->expand_cfpod ($msg)
2870 unless $color & cf::NDI_VERBATIM;
2871
2872 $color &= cf::NDI_CLIENT_MASK; # just in case...
2873
2874 # check predefined channels, for the benefit of C
2875 if ($CHANNEL{$channel}) {
2876 $channel = $CHANNEL{$channel};
2877
2878 $self->ext_msg (channel_info => $channel);
2879 $channel = $channel->{id};
2880
2881 } elsif (ref $channel) {
2882 # send meta info to client, if not yet sent
2883 unless (exists $self->{channel}{$channel->{id}}) {
2884 $self->{channel}{$channel->{id}} = $channel;
2885 $self->ext_msg (channel_info => $channel);
2886 }
2887
2888 $channel = $channel->{id};
2889 }
2890
2891 return unless @extra || length $msg;
2892
2893 # default colour, mask it out
2894 $color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
2895 if $color & cf::NDI_DEF;
2896
2897 my $pkt = "msg "
2898 . $self->{json_coder}->encode (
2899 [$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
2900 );
2901
2902 # try lzf for large packets
2903 $pkt = "lzf " . Compress::LZF::compress $pkt
2904 if 1024 <= length $pkt and $self->{can_lzf};
2905
2906 # split very large packets
2907 if (8192 < length $pkt and $self->{can_lzf}) {
2908 $self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
2909 $pkt = "frag";
2910 }
2911
2912 $self->send_packet ($pkt);
2913}
2914
2915=item $client->ext_msg ($type, @msg)
2916
2917Sends an ext event to the client.
2918
2919=cut
2920
2921sub cf::client::ext_msg($$@) {
2922 my ($self, $type, @msg) = @_;
2923
2924 if ($self->extcmd == 2) {
2925 $self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
2926 } elsif ($self->extcmd == 1) { # TODO: remove
2927 push @msg, msgtype => "event_$type";
2928 $self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
2929 }
2930}
2931
450=item $player->ext_reply ($msgid, $msgtype, %msg) 2932=item $client->ext_reply ($msgid, @msg)
451 2933
452Sends an ext reply to the player. 2934Sends an ext reply to the client.
453 2935
454=cut 2936=cut
455 2937
456sub cf::player::ext_reply($$$%) { 2938sub cf::client::ext_reply($$@) {
457 my ($self, $id, %msg) = @_; 2939 my ($self, $id, @msg) = @_;
458 2940
459 $msg{msgid} = $id; 2941 if ($self->extcmd == 2) {
460 2942 $self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
461 $self->send ("ext " . to_json \%msg); 2943 } elsif ($self->extcmd == 1) {
2944 #TODO: version 1, remove
2945 unshift @msg, msgtype => "reply", msgid => $id;
2946 $self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
2947 }
462} 2948}
463 2949
464############################################################################# 2950=item $success = $client->query ($flags, "text", \&cb)
465# map scripting support
466 2951
2952Queues a query to the client, calling the given callback with
2953the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2954C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2955
2956Queries can fail, so check the return code. Or don't, as queries will
2957become reliable at some point in the future.
2958
2959=cut
2960
2961sub cf::client::query {
2962 my ($self, $flags, $text, $cb) = @_;
2963
2964 return unless $self->state == ST_PLAYING
2965 || $self->state == ST_SETUP
2966 || $self->state == ST_CUSTOM;
2967
2968 $self->state (ST_CUSTOM);
2969
2970 utf8::encode $text;
2971 push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2972
2973 $self->send_packet ($self->{query_queue}[0][0])
2974 if @{ $self->{query_queue} } == 1;
2975
2976 1
2977}
2978
2979cf::client->attach (
2980 on_connect => sub {
2981 my ($ns) = @_;
2982
2983 $ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
2984 },
2985 on_reply => sub {
2986 my ($ns, $msg) = @_;
2987
2988 # this weird shuffling is so that direct followup queries
2989 # get handled first
2990 my $queue = delete $ns->{query_queue}
2991 or return; # be conservative, not sure how that can happen, but we saw a crash here
2992
2993 (shift @$queue)->[1]->($msg);
2994 return unless $ns->valid; # temporary(?) workaround for callback destroying socket
2995
2996 push @{ $ns->{query_queue} }, @$queue;
2997
2998 if (@{ $ns->{query_queue} } == @$queue) {
2999 if (@$queue) {
3000 $ns->send_packet ($ns->{query_queue}[0][0]);
3001 } else {
3002 $ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
3003 }
3004 }
3005 },
3006 on_exticmd => sub {
3007 my ($ns, $buf) = @_;
3008
3009 my $msg = eval { $ns->{json_coder}->decode ($buf) };
3010
3011 if (ref $msg) {
3012 my ($type, $reply, @payload) =
3013 "ARRAY" eq ref $msg
3014 ? @$msg
3015 : ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
3016
3017 my @reply;
3018
3019 if (my $cb = $EXTICMD{$type}) {
3020 @reply = $cb->($ns, @payload);
3021 }
3022
3023 $ns->ext_reply ($reply, @reply)
3024 if $reply;
3025
3026 } else {
3027 warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
3028 }
3029
3030 cf::override;
3031 },
3032);
3033
3034=item $client->async (\&cb)
3035
3036Create a new coroutine, running the specified callback. The coroutine will
3037be automatically cancelled when the client gets destroyed (e.g. on logout,
3038or loss of connection).
3039
3040=cut
3041
3042sub cf::client::async {
3043 my ($self, $cb) = @_;
3044
3045 my $coro = &Coro::async ($cb);
3046
3047 $coro->on_destroy (sub {
3048 delete $self->{_coro}{$coro+0};
3049 });
3050
3051 $self->{_coro}{$coro+0} = $coro;
3052
3053 $coro
3054}
3055
3056cf::client->attach (
3057 on_destroy => sub {
3058 my ($ns) = @_;
3059
3060 $_->cancel for values %{ (delete $ns->{_coro}) || {} };
3061 },
3062);
3063
3064=back
3065
3066
3067=head2 SAFE SCRIPTING
3068
3069Functions that provide a safe environment to compile and execute
3070snippets of perl code without them endangering the safety of the server
3071itself. Looping constructs, I/O operators and other built-in functionality
3072is not available in the safe scripting environment, and the number of
3073functions and methods that can be called is greatly reduced.
3074
3075=cut
3076
467our $safe = new Safe "ext"; 3077our $safe = new Safe "safe";
468our $safe_hole = new Safe::Hole; 3078our $safe_hole = new Safe::Hole;
469 3079
470$SIG{FPE} = 'IGNORE'; 3080$SIG{FPE} = 'IGNORE';
471 3081
472$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time)); 3082$safe->permit_only (Opcode::opset qw(
3083 :base_core :base_mem :base_orig :base_math
3084 grepstart grepwhile mapstart mapwhile
3085 sort time
3086));
473 3087
474# here we export the classes and methods available to script code 3088# here we export the classes and methods available to script code
475 3089
3090=pod
3091
3092The following functions and methods are available within a safe environment:
3093
3094 cf::object
3095 contr pay_amount pay_player map x y force_find force_add destroy
3096 insert remove name archname title slaying race decrease split
3097 value
3098
3099 cf::object::player
3100 player
3101
3102 cf::player
3103 peaceful
3104
3105 cf::map
3106 trigger
3107
3108=cut
3109
476for ( 3110for (
477 ["cf::object" => qw(contr pay_amount pay_player)], 3111 ["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
3112 insert remove inv nrof name archname title slaying race
3113 decrease split destroy change_exp value msg lore send_msg)],
478 ["cf::object::player" => qw(player)], 3114 ["cf::object::player" => qw(player)],
479 ["cf::player" => qw(peaceful)], 3115 ["cf::player" => qw(peaceful send_msg)],
3116 ["cf::map" => qw(trigger)],
480) { 3117) {
481 no strict 'refs'; 3118 no strict 'refs';
482 my ($pkg, @funs) = @$_; 3119 my ($pkg, @funs) = @$_;
483 *{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"}) 3120 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
484 for @funs; 3121 for @funs;
485} 3122}
3123
3124=over 4
3125
3126=item @retval = safe_eval $code, [var => value, ...]
3127
3128Compiled and executes the given perl code snippet. additional var/value
3129pairs result in temporary local (my) scalar variables of the given name
3130that are available in the code snippet. Example:
3131
3132 my $five = safe_eval '$first + $second', first => 1, second => 4;
3133
3134=cut
486 3135
487sub safe_eval($;@) { 3136sub safe_eval($;@) {
488 my ($code, %vars) = @_; 3137 my ($code, %vars) = @_;
489 3138
490 my $qcode = $code; 3139 my $qcode = $code;
491 $qcode =~ s/"/‟/g; # not allowed in #line filenames 3140 $qcode =~ s/"/‟/g; # not allowed in #line filenames
492 $qcode =~ s/\n/\\n/g; 3141 $qcode =~ s/\n/\\n/g;
493 3142
3143 %vars = (_dummy => 0) unless %vars;
3144
494 local $_; 3145 local $_;
495 local @ext::cf::_safe_eval_args = values %vars; 3146 local @safe::cf::_safe_eval_args = values %vars;
496 3147
497 $code = 3148 my $eval =
498 "do {\n" 3149 "do {\n"
499 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n" 3150 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
500 . "#line 0 \"{$qcode}\"\n" 3151 . "#line 0 \"{$qcode}\"\n"
501 . $code 3152 . $code
502 . "\n}" 3153 . "\n}"
503 ; 3154 ;
504 3155
505 sub_generation_inc; 3156 sub_generation_inc;
506 my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code); 3157 my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
507 sub_generation_inc; 3158 sub_generation_inc;
508 3159
3160 if ($@) {
3161 warn "$@";
3162 warn "while executing safe code '$code'\n";
3163 warn "with arguments " . (join " ", %vars) . "\n";
3164 }
3165
509 wantarray ? @res : $res[0] 3166 wantarray ? @res : $res[0]
510} 3167}
3168
3169=item cf::register_script_function $function => $cb
3170
3171Register a function that can be called from within map/npc scripts. The
3172function should be reasonably secure and should be put into a package name
3173like the extension.
3174
3175Example: register a function that gets called whenever a map script calls
3176C<rent::overview>, as used by the C<rent> extension.
3177
3178 cf::register_script_function "rent::overview" => sub {
3179 ...
3180 };
3181
3182=cut
511 3183
512sub register_script_function { 3184sub register_script_function {
513 my ($fun, $cb) = @_; 3185 my ($fun, $cb) = @_;
514 3186
515 no strict 'refs'; 3187 no strict 'refs';
516 *{"ext::$fun"} = $safe_hole->wrap ($cb); 3188 *{"safe::$fun"} = $safe_hole->wrap ($cb);
517} 3189}
3190
3191=back
3192
3193=cut
518 3194
519############################################################################# 3195#############################################################################
520# the server's main() 3196# the server's init and main functions
521 3197
522sub run { 3198sub load_facedata($) {
523 my $tick = MAX_TIME * 1e-6; 3199 my ($path) = @_;
524 my $next = Event::time;
525 my $timer = Event->timer (at => $next, cb => sub {
526 cf::server_tick; # one server iteration
527 3200
528 $next += $tick; 3201 # HACK to clear player env face cache, we need some signal framework
529 my $NOW = Event::time; 3202 # for this (global event?)
3203 %ext::player_env::MUSIC_FACE_CACHE = ();
530 3204
531 # if we are delayd by > 0.25 second, skip ticks 3205 my $enc = JSON::XS->new->utf8->canonical->relaxed;
532 $next = $NOW if $NOW >= $next + .25;
533 3206
534 $_[0]->w->at ($next); 3207 warn "loading facedata from $path\n";
535 $_[0]->w->start; 3208
3209 my $facedata;
3210 0 < aio_load $path, $facedata
3211 or die "$path: $!";
3212
3213 $facedata = Coro::Storable::thaw $facedata;
3214
3215 $facedata->{version} == 2
3216 or cf::cleanup "$path: version mismatch, cannot proceed.";
3217
3218 # patch in the exptable
3219 $facedata->{resource}{"res/exp_table"} = {
3220 type => FT_RSRC,
3221 data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
536 }); 3222 };
3223 cf::cede_to_tick;
537 3224
538 Event::loop; 3225 {
3226 my $faces = $facedata->{faceinfo};
3227
3228 while (my ($face, $info) = each %$faces) {
3229 my $idx = (cf::face::find $face) || cf::face::alloc $face;
3230
3231 cf::face::set_visibility $idx, $info->{visibility};
3232 cf::face::set_magicmap $idx, $info->{magicmap};
3233 cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
3234 cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
3235
3236 cf::cede_to_tick;
3237 }
3238
3239 while (my ($face, $info) = each %$faces) {
3240 next unless $info->{smooth};
3241
3242 my $idx = cf::face::find $face
3243 or next;
3244
3245 if (my $smooth = cf::face::find $info->{smooth}) {
3246 cf::face::set_smooth $idx, $smooth;
3247 cf::face::set_smoothlevel $idx, $info->{smoothlevel};
3248 } else {
3249 warn "smooth face '$info->{smooth}' not found for face '$face'";
3250 }
3251
3252 cf::cede_to_tick;
3253 }
3254 }
3255
3256 {
3257 my $anims = $facedata->{animinfo};
3258
3259 while (my ($anim, $info) = each %$anims) {
3260 cf::anim::set $anim, $info->{frames}, $info->{facings};
3261 cf::cede_to_tick;
3262 }
3263
3264 cf::anim::invalidate_all; # d'oh
3265 }
3266
3267 {
3268 # TODO: for gcfclient pleasure, we should give resources
3269 # that gcfclient doesn't grok a >10000 face index.
3270 my $res = $facedata->{resource};
3271
3272 while (my ($name, $info) = each %$res) {
3273 if (defined $info->{type}) {
3274 my $idx = (cf::face::find $name) || cf::face::alloc $name;
3275 my $data;
3276
3277 if ($info->{type} & 1) {
3278 # prepend meta info
3279
3280 my $meta = $enc->encode ({
3281 name => $name,
3282 %{ $info->{meta} || {} },
3283 });
3284
3285 $data = pack "(w/a*)*", $meta, $info->{data};
3286 } else {
3287 $data = $info->{data};
3288 }
3289
3290 cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
3291 cf::face::set_type $idx, $info->{type};
3292 } else {
3293 $RESOURCE{$name} = $info;
3294 }
3295
3296 cf::cede_to_tick;
3297 }
3298 }
3299
3300 cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
3301
3302 1
3303}
3304
3305cf::global->attach (on_resource_update => sub {
3306 if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
3307 $soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
3308
3309 for (0 .. SOUND_CAST_SPELL_0 - 1) {
3310 my $sound = $soundconf->{compat}[$_]
3311 or next;
3312
3313 my $face = cf::face::find "sound/$sound->[1]";
3314 cf::sound::set $sound->[0] => $face;
3315 cf::sound::old_sound_index $_, $face; # gcfclient-compat
3316 }
3317
3318 while (my ($k, $v) = each %{$soundconf->{event}}) {
3319 my $face = cf::face::find "sound/$v";
3320 cf::sound::set $k => $face;
3321 }
3322 }
3323});
3324
3325register_exticmd fx_want => sub {
3326 my ($ns, $want) = @_;
3327
3328 while (my ($k, $v) = each %$want) {
3329 $ns->fx_want ($k, $v);
3330 }
3331};
3332
3333sub load_resource_file($) {
3334 my $guard = lock_acquire "load_resource_file";
3335
3336 my $status = load_resource_file_ $_[0];
3337 get_slot 0.1, 100;
3338 cf::arch::commit_load;
3339
3340 $status
3341}
3342
3343sub reload_regions {
3344 # HACK to clear player env face cache, we need some signal framework
3345 # for this (global event?)
3346 %ext::player_env::MUSIC_FACE_CACHE = ();
3347
3348 load_resource_file "$MAPDIR/regions"
3349 or die "unable to load regions file\n";
3350
3351 for (cf::region::list) {
3352 $_->{match} = qr/$_->{match}/
3353 if exists $_->{match};
3354 }
3355}
3356
3357sub reload_facedata {
3358 load_facedata "$DATADIR/facedata"
3359 or die "unable to load facedata\n";
3360}
3361
3362sub reload_archetypes {
3363 load_resource_file "$DATADIR/archetypes"
3364 or die "unable to load archetypes\n";
3365}
3366
3367sub reload_treasures {
3368 load_resource_file "$DATADIR/treasures"
3369 or die "unable to load treasurelists\n";
3370}
3371
3372sub reload_resources {
3373 warn "reloading resource files...\n";
3374
3375 reload_facedata;
3376 reload_archetypes;
3377 reload_regions;
3378 reload_treasures;
3379
3380 warn "finished reloading resource files\n";
3381}
3382
3383sub reload_config {
3384 open my $fh, "<:utf8", "$CONFDIR/config"
3385 or return;
3386
3387 local $/;
3388 *CFG = YAML::Load <$fh>;
3389
3390 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
3391
3392 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
3393 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
3394
3395 if (exists $CFG{mlockall}) {
3396 eval {
3397 $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
3398 and die "WARNING: m(un)lockall failed: $!\n";
3399 };
3400 warn $@ if $@;
3401 }
3402}
3403
3404sub pidfile() {
3405 sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
3406 or die "$PIDFILE: $!";
3407 flock $fh, &Fcntl::LOCK_EX
3408 or die "$PIDFILE: flock: $!";
3409 $fh
3410}
3411
3412# make sure only one server instance is running at any one time
3413sub atomic {
3414 my $fh = pidfile;
3415
3416 my $pid = <$fh>;
3417 kill 9, $pid if $pid > 0;
3418
3419 seek $fh, 0, 0;
3420 print $fh $$;
3421}
3422
3423sub main_loop {
3424 warn "EV::loop starting\n";
3425 if (1) {
3426 EV::loop;
3427 }
3428 warn "EV::loop returned\n";
3429 goto &main_loop unless $REALLY_UNLOOP;
3430}
3431
3432sub main {
3433 cf::init_globals; # initialise logging
3434
3435 LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
3436 LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
3437 LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
3438 LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
3439
3440 cf::init_experience;
3441 cf::init_anim;
3442 cf::init_attackmess;
3443 cf::init_dynamic;
3444
3445 $Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
3446
3447 # we must not ever block the main coroutine
3448 local $Coro::idle = sub {
3449 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
3450 (async {
3451 $Coro::current->{desc} = "IDLE BUG HANDLER";
3452 EV::loop EV::LOOP_ONESHOT;
3453 })->prio (Coro::PRIO_MAX);
3454 };
3455
3456 evthread_start IO::AIO::poll_fileno;
3457
3458 cf::sync_job {
3459 reload_resources;
3460 reload_config;
3461 db_init;
3462
3463 cf::load_settings;
3464 cf::load_materials;
3465 cf::init_uuid;
3466 cf::init_signals;
3467 cf::init_commands;
3468 cf::init_skills;
3469
3470 cf::init_beforeplay;
3471
3472 atomic;
3473
3474 load_extensions;
3475
3476 utime time, time, $RUNTIMEFILE;
3477
3478 # no (long-running) fork's whatsoever before this point(!)
3479 use POSIX ();
3480 POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
3481
3482 (pop @POST_INIT)->(0) while @POST_INIT;
3483 };
3484
3485 main_loop;
539} 3486}
540 3487
541############################################################################# 3488#############################################################################
542# initialisation 3489# initialisation and cleanup
543 3490
544register "<global>", __PACKAGE__; 3491# install some emergency cleanup handlers
3492BEGIN {
3493 our %SIGWATCHER = ();
3494 for my $signal (qw(INT HUP TERM)) {
3495 $SIGWATCHER{$signal} = EV::signal $signal, sub {
3496 cf::cleanup "SIG$signal";
3497 };
3498 }
3499}
3500
3501sub write_runtime_sync {
3502 # first touch the runtime file to show we are still running:
3503 # the fsync below can take a very very long time.
3504
3505 IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
3506
3507 my $guard = cf::lock_acquire "write_runtime";
3508
3509 my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
3510 or return;
3511
3512 my $value = $cf::RUNTIME + 90 + 10;
3513 # 10 is the runtime save interval, for a monotonic clock
3514 # 60 allows for the watchdog to kill the server.
3515
3516 (aio_write $fh, 0, (length $value), $value, 0) <= 0
3517 and return;
3518
3519 # always fsync - this file is important
3520 aio_fsync $fh
3521 and return;
3522
3523 # touch it again to show we are up-to-date
3524 aio_utime $fh, undef, undef;
3525
3526 close $fh
3527 or return;
3528
3529 aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
3530 and return;
3531
3532 warn "runtime file written.\n";
3533
3534 1
3535}
3536
3537our $uuid_lock;
3538our $uuid_skip;
3539
3540sub write_uuid_sync($) {
3541 $uuid_skip ||= $_[0];
3542
3543 return if $uuid_lock;
3544 local $uuid_lock = 1;
3545
3546 my $uuid = "$LOCALDIR/uuid";
3547
3548 my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
3549 or return;
3550
3551 my $value = uuid_seq uuid_cur;
3552
3553 unless ($value) {
3554 warn "cowardly refusing to write zero uuid value!\n";
3555 return;
3556 }
3557
3558 my $value = uuid_str $value + $uuid_skip;
3559 $uuid_skip = 0;
3560
3561 (aio_write $fh, 0, (length $value), $value, 0) <= 0
3562 and return;
3563
3564 # always fsync - this file is important
3565 aio_fsync $fh
3566 and return;
3567
3568 close $fh
3569 or return;
3570
3571 aio_rename "$uuid~", $uuid
3572 and return;
3573
3574 warn "uuid file written ($value).\n";
3575
3576 1
3577
3578}
3579
3580sub write_uuid($$) {
3581 my ($skip, $sync) = @_;
3582
3583 $sync ? write_uuid_sync $skip
3584 : async { write_uuid_sync $skip };
3585}
3586
3587sub emergency_save() {
3588 my $freeze_guard = cf::freeze_mainloop;
3589
3590 warn "emergency_perl_save: enter\n";
3591
3592 cf::sync_job {
3593 # this is a trade-off: we want to be very quick here, so
3594 # save all maps without fsync, and later call a global sync
3595 # (which in turn might be very very slow)
3596 local $USE_FSYNC = 0;
3597
3598 # use a peculiar iteration method to avoid tripping on perl
3599 # refcount bugs in for. also avoids problems with players
3600 # and maps saved/destroyed asynchronously.
3601 warn "emergency_perl_save: begin player save\n";
3602 for my $login (keys %cf::PLAYER) {
3603 my $pl = $cf::PLAYER{$login} or next;
3604 $pl->valid or next;
3605 delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
3606 $pl->save;
3607 }
3608 warn "emergency_perl_save: end player save\n";
3609
3610 warn "emergency_perl_save: begin map save\n";
3611 for my $path (keys %cf::MAP) {
3612 my $map = $cf::MAP{$path} or next;
3613 $map->valid or next;
3614 $map->save;
3615 }
3616 warn "emergency_perl_save: end map save\n";
3617
3618 warn "emergency_perl_save: begin database checkpoint\n";
3619 BDB::db_env_txn_checkpoint $DB_ENV;
3620 warn "emergency_perl_save: end database checkpoint\n";
3621
3622 warn "emergency_perl_save: begin write uuid\n";
3623 write_uuid_sync 1;
3624 warn "emergency_perl_save: end write uuid\n";
3625 };
3626
3627 warn "emergency_perl_save: starting sync()\n";
3628 IO::AIO::aio_sync sub {
3629 warn "emergency_perl_save: finished sync()\n";
3630 };
3631
3632 warn "emergency_perl_save: leave\n";
3633}
3634
3635sub post_cleanup {
3636 my ($make_core) = @_;
3637
3638 warn Carp::longmess "post_cleanup backtrace"
3639 if $make_core;
3640
3641 my $fh = pidfile;
3642 unlink $PIDFILE if <$fh> == $$;
3643}
3644
3645# a safer delete_package, copied from Symbol
3646sub clear_package($) {
3647 my $pkg = shift;
3648
3649 # expand to full symbol table name if needed
3650 unless ($pkg =~ /^main::.*::$/) {
3651 $pkg = "main$pkg" if $pkg =~ /^::/;
3652 $pkg = "main::$pkg" unless $pkg =~ /^main::/;
3653 $pkg .= '::' unless $pkg =~ /::$/;
3654 }
3655
3656 my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
3657 my $stem_symtab = *{$stem}{HASH};
3658
3659 defined $stem_symtab and exists $stem_symtab->{$leaf}
3660 or return;
3661
3662 # clear all symbols
3663 my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
3664 for my $name (keys %$leaf_symtab) {
3665 _gv_clear *{"$pkg$name"};
3666# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
3667 }
3668 warn "cleared package $pkg\n";#d#
3669}
3670
3671sub do_reload_perl() {
3672 # can/must only be called in main
3673 if ($Coro::current != $Coro::main) {
3674 warn "can only reload from main coroutine";
3675 return;
3676 }
3677
3678 return if $RELOAD++;
3679
3680 my $t1 = EV::time;
3681
3682 while ($RELOAD) {
3683 warn "reloading...";
3684
3685 warn "entering sync_job";
3686
3687 cf::sync_job {
3688 cf::write_runtime_sync; # external watchdog should not bark
3689 cf::emergency_save;
3690 cf::write_runtime_sync; # external watchdog should not bark
3691
3692 warn "syncing database to disk";
3693 BDB::db_env_txn_checkpoint $DB_ENV;
3694
3695 # if anything goes wrong in here, we should simply crash as we already saved
3696
3697 warn "flushing outstanding aio requests";
3698 while (IO::AIO::nreqs || BDB::nreqs) {
3699 Coro::EV::timer_once 0.01; # let the sync_job do it's thing
3700 }
3701
3702 warn "cancelling all extension coros";
3703 $_->cancel for values %EXT_CORO;
3704 %EXT_CORO = ();
3705
3706 warn "removing commands";
3707 %COMMAND = ();
3708
3709 warn "removing ext/exti commands";
3710 %EXTCMD = ();
3711 %EXTICMD = ();
3712
3713 warn "unloading/nuking all extensions";
3714 for my $pkg (@EXTS) {
3715 warn "... unloading $pkg";
3716
3717 if (my $cb = $pkg->can ("unload")) {
3718 eval {
3719 $cb->($pkg);
3720 1
3721 } or warn "$pkg unloaded, but with errors: $@";
3722 }
3723
3724 warn "... clearing $pkg";
3725 clear_package $pkg;
3726 }
3727
3728 warn "unloading all perl modules loaded from $LIBDIR";
3729 while (my ($k, $v) = each %INC) {
3730 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
3731
3732 warn "... unloading $k";
3733 delete $INC{$k};
3734
3735 $k =~ s/\.pm$//;
3736 $k =~ s/\//::/g;
3737
3738 if (my $cb = $k->can ("unload_module")) {
3739 $cb->();
3740 }
3741
3742 clear_package $k;
3743 }
3744
3745 warn "getting rid of safe::, as good as possible";
3746 clear_package "safe::$_"
3747 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
3748
3749 warn "unloading cf.pm \"a bit\"";
3750 delete $INC{"cf.pm"};
3751 delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
3752
3753 # don't, removes xs symbols, too,
3754 # and global variables created in xs
3755 #clear_package __PACKAGE__;
3756
3757 warn "unload completed, starting to reload now";
3758
3759 warn "reloading cf.pm";
3760 require cf;
3761 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
3762
3763 warn "loading config and database again";
3764 cf::reload_config;
3765
3766 warn "loading extensions";
3767 cf::load_extensions;
3768
3769 if ($REATTACH_ON_RELOAD) {
3770 warn "reattaching attachments to objects/players";
3771 _global_reattach; # objects, sockets
3772 warn "reattaching attachments to maps";
3773 reattach $_ for values %MAP;
3774 warn "reattaching attachments to players";
3775 reattach $_ for values %PLAYER;
3776 }
3777
3778 warn "running post_init jobs";
3779 (pop @POST_INIT)->(1) while @POST_INIT;
3780
3781 warn "leaving sync_job";
3782
3783 1
3784 } or do {
3785 warn $@;
3786 cf::cleanup "error while reloading, exiting.";
3787 };
3788
3789 warn "reloaded";
3790 --$RELOAD;
3791 }
3792
3793 $t1 = EV::time - $t1;
3794 warn "reload completed in ${t1}s\n";
3795};
3796
3797our $RELOAD_WATCHER; # used only during reload
3798
3799sub reload_perl() {
3800 # doing reload synchronously and two reloads happen back-to-back,
3801 # coro crashes during coro_state_free->destroy here.
3802
3803 $RELOAD_WATCHER ||= cf::async {
3804 Coro::AIO::aio_wait cache_extensions;
3805
3806 $RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
3807 do_reload_perl;
3808 undef $RELOAD_WATCHER;
3809 };
3810 };
3811}
3812
3813register_command "reload" => sub {
3814 my ($who, $arg) = @_;
3815
3816 if ($who->flag (FLAG_WIZ)) {
3817 $who->message ("reloading server.");
3818 async {
3819 $Coro::current->{desc} = "perl_reload";
3820 reload_perl;
3821 };
3822 }
3823};
545 3824
546unshift @INC, $LIBDIR; 3825unshift @INC, $LIBDIR;
547 3826
548load_extensions; 3827my $bug_warning = 0;
3828
3829our @WAIT_FOR_TICK;
3830our @WAIT_FOR_TICK_BEGIN;
3831
3832sub wait_for_tick {
3833 return if tick_inhibit || $Coro::current == $Coro::main;
3834
3835 my $signal = new Coro::Signal;
3836 push @WAIT_FOR_TICK, $signal;
3837 $signal->wait;
3838}
3839
3840sub wait_for_tick_begin {
3841 return if tick_inhibit || $Coro::current == $Coro::main;
3842
3843 my $signal = new Coro::Signal;
3844 push @WAIT_FOR_TICK_BEGIN, $signal;
3845 $signal->wait;
3846}
3847
3848sub tick {
3849 if ($Coro::current != $Coro::main) {
3850 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
3851 unless ++$bug_warning > 10;
3852 return;
3853 }
3854
3855 cf::server_tick; # one server iteration
3856
3857 if ($NOW >= $NEXT_RUNTIME_WRITE) {
3858 $NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
3859 Coro::async_pool {
3860 $Coro::current->{desc} = "runtime saver";
3861 write_runtime_sync
3862 or warn "ERROR: unable to write runtime file: $!";
3863 };
3864 }
3865
3866 if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
3867 $sig->send;
3868 }
3869 while (my $sig = shift @WAIT_FOR_TICK) {
3870 $sig->send;
3871 }
3872
3873 $LOAD = ($NOW - $TICK_START) / $TICK;
3874 $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
3875
3876 if (0) {
3877 if ($NEXT_TICK) {
3878 my $jitter = $TICK_START - $NEXT_TICK;
3879 $JITTER = $JITTER * 0.75 + $jitter * 0.25;
3880 warn "jitter $JITTER\n";#d#
3881 }
3882 }
3883}
3884
3885{
3886 # configure BDB
3887
3888 BDB::min_parallel 8;
3889 BDB::max_poll_reqs $TICK * 0.1;
3890 $AnyEvent::BDB::WATCHER->priority (1);
3891
3892 unless ($DB_ENV) {
3893 $DB_ENV = BDB::db_env_create;
3894 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
3895 $DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
3896 $DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
3897 $DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
3898 $DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
3899
3900 cf::sync_job {
3901 eval {
3902 BDB::db_env_open
3903 $DB_ENV,
3904 $BDBDIR,
3905 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
3906 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
3907 0666;
3908
3909 cf::cleanup "db_env_open($BDBDIR): $!" if $!;
3910 };
3911
3912 cf::cleanup "db_env_open(db): $@" if $@;
3913 };
3914 }
3915
3916 $BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
3917 BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
3918 };
3919 $BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
3920 BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
3921 };
3922 $BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
3923 BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
3924 };
3925}
3926
3927{
3928 # configure IO::AIO
3929
3930 IO::AIO::min_parallel 8;
3931 IO::AIO::max_poll_time $TICK * 0.1;
3932 undef $AnyEvent::AIO::WATCHER;
3933}
3934
3935my $_log_backtrace;
3936
3937sub _log_backtrace {
3938 my ($msg, @addr) = @_;
3939
3940 $msg =~ s/\n//;
3941
3942 # limit the # of concurrent backtraces
3943 if ($_log_backtrace < 2) {
3944 ++$_log_backtrace;
3945 my $perl_bt = Carp::longmess $msg;
3946 async {
3947 $Coro::current->{desc} = "abt $msg";
3948
3949 my @bt = fork_call {
3950 @addr = map { sprintf "%x", $_ } @addr;
3951 my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
3952 open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
3953 or die "addr2line: $!";
3954
3955 my @funcs;
3956 my @res = <$fh>;
3957 chomp for @res;
3958 while (@res) {
3959 my ($func, $line) = splice @res, 0, 2, ();
3960 push @funcs, "[$func] $line";
3961 }
3962
3963 @funcs
3964 };
3965
3966 LOG llevInfo, "[ABT] $perl_bt\n";
3967 LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
3968 LOG llevInfo, "[ABT] $_\n" for @bt;
3969 --$_log_backtrace;
3970 };
3971 } else {
3972 LOG llevInfo, "[ABT] $msg\n";
3973 LOG llevInfo, "[ABT] [suppressed]\n";
3974 }
3975}
3976
3977# load additional modules
3978require "cf/$_.pm" for @EXTRA_MODULES;
3979
3980END { cf::emergency_save }
549 3981
5501 39821
551 3983

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