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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.21 by root, Sun Jul 16 17:51:40 2006 UTC vs.
Revision 1.199 by root, Mon Jan 29 14:46:01 2007 UTC

1package cf; 1package cf;
2
3use utf8;
4use strict;
2 5
3use Symbol; 6use Symbol;
4use List::Util; 7use List::Util;
5use Storable; 8use Storable;
9use Opcode;
10use Safe;
11use Safe::Hole;
6 12
13use Coro 3.5 ();
7use Event; 14use Coro::Event;
15use Coro::Timer;
16use Coro::Signal;
17use Coro::Semaphore;
18use Coro::AIO;
19
20use Data::Dumper;
21use Digest::MD5;
22use Fcntl;
23use IO::AIO 2.32 ();
24use YAML::Syck ();
25use Time::HiRes;
26
8$Event::Eval = 1; # no idea why this is required, but it is 27use Event; $Event::Eval = 1; # no idea why this is required, but it is
9 28
10use strict; 29sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
11 30
12our %COMMAND; 31# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
32$YAML::Syck::ImplicitUnicode = 1;
33
34$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
35
36our %COMMAND = ();
37our %COMMAND_TIME = ();
38
39our @EXTS = (); # list of extension package names
40our %EXTCMD = ();
41our %EXT_CORO = (); # coroutines bound to extensions
42our %EXT_MAP = (); # pluggable maps
43
13our @EVENT; 44our @EVENT;
14our %PROP_TYPE; 45our $LIBDIR = datadir . "/ext";
15our %PROP_IDX; 46
47our $TICK = MAX_TIME * 1e-6;
48our $TICK_WATCHER;
49our $AIO_POLL_WATCHER;
50our $WRITE_RUNTIME_WATCHER;
51our $NEXT_TICK;
52our $NOW;
53
54our %CFG;
55
56our $UPTIME; $UPTIME ||= time;
57our $RUNTIME;
58
59our %PLAYER; # all users
60our %MAP; # all maps
61our $LINK_MAP; # the special {link} map, which is always available
62our $RANDOM_MAPS = cf::localdir . "/random";
63
64our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
65our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
66
67# used to convert map paths into valid unix filenames by replacing / by ∕
68our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
69
70binmode STDOUT;
71binmode STDERR;
72
73# read virtual server time, if available
74unless ($RUNTIME || !-e cf::localdir . "/runtime") {
75 open my $fh, "<", cf::localdir . "/runtime"
76 or die "unable to read runtime file: $!";
77 $RUNTIME = <$fh> + 0.;
78}
79
80mkdir cf::localdir;
81mkdir cf::localdir . "/" . cf::playerdir;
82mkdir cf::localdir . "/" . cf::tmpdir;
83mkdir cf::localdir . "/" . cf::uniquedir;
84mkdir $RANDOM_MAPS;
85
86our $EMERGENCY_POSITION;
87
88sub cf::map::normalise;
89
90#############################################################################
91
92=head2 GLOBAL VARIABLES
93
94=over 4
95
96=item $cf::UPTIME
97
98The timestamp of the server start (so not actually an uptime).
99
100=item $cf::RUNTIME
101
102The time this server has run, starts at 0 and is increased by $cf::TICK on
103every server tick.
104
105=item $cf::LIBDIR
106
107The perl library directory, where extensions and cf-specific modules can
108be found. It will be added to C<@INC> automatically.
109
110=item $cf::NOW
111
112The time of the last (current) server tick.
113
114=item $cf::TICK
115
116The interval between server ticks, in seconds.
117
118=item %cf::CFG
119
120Configuration for the server, loaded from C</etc/crossfire/config>, or
121from wherever your confdir points to.
122
123=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
124
125These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
126or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
127processing has been done. Call C<< ->wait >> on them to maximise the
128window of cpu time available, or simply to synchronise to the server tick.
129
130=back
131
132=cut
16 133
17BEGIN { 134BEGIN {
18 @EVENT = map lc, @EVENT;
19
20 *CORE::GLOBAL::warn = sub { 135 *CORE::GLOBAL::warn = sub {
21 my $msg = join "", @_; 136 my $msg = join "", @_;
137 utf8::encode $msg;
138
22 $msg .= "\n" 139 $msg .= "\n"
23 unless $msg =~ /\n$/; 140 unless $msg =~ /\n$/;
24 141
25 print STDERR "cfperl: $msg";
26 LOG llevError, "cfperl: $msg"; 142 LOG llevError, $msg;
27 }; 143 };
28} 144}
29 145
30my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply! 146@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
147@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
148@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
149@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
150@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
151@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
31 152
32# generate property mutators 153# we bless all objects into (empty) derived classes to force a method lookup
33sub prop_gen { 154# within the Safe compartment.
34 my ($prefix, $class) = @_; 155for my $pkg (qw(
35 156 cf::global cf::attachable
157 cf::object cf::object::player
158 cf::client cf::player
159 cf::arch cf::living
160 cf::map cf::party cf::region
161)) {
36 no strict 'refs'; 162 no strict 'refs';
37 163 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
38 for my $prop (keys %PROP_TYPE) {
39 $prop =~ /^\Q$prefix\E_(.*$)/ or next;
40 my $sub = lc $1;
41
42 my $type = $PROP_TYPE{$prop};
43 my $idx = $PROP_IDX {$prop};
44
45 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
46 $_[0]->get_property ($type, $idx)
47 };
48
49 *{"$class\::set_$sub"} = sub {
50 $_[0]->set_property ($type, $idx, $_[1]);
51 } unless $ignore_set{$prop};
52 }
53} 164}
54
55# auto-generate most of the API
56
57prop_gen OBJECT_PROP => "cf::object";
58# CFAPI_OBJECT_ANIMATION?
59prop_gen PLAYER_PROP => "cf::object::player";
60
61prop_gen MAP_PROP => "cf::map";
62prop_gen ARCH_PROP => "cf::arch";
63
64# guessed hierarchies
65
66@cf::object::player::ISA = 'cf::object';
67@cf::object::map::ISA = 'cf::object';
68 165
69$Event::DIED = sub { 166$Event::DIED = sub {
70 warn "error in event callback: @_"; 167 warn "error in event callback: @_";
71}; 168};
72 169
73my %ext_pkg; 170=head2 UTILITY FUNCTIONS
74my @exts;
75my @hook;
76my %command;
77my %extcmd;
78 171
79sub inject_event { 172=over 4
80 my $extension = shift; 173
174=item dumpval $ref
175
176=cut
177
178sub dumpval {
179 eval {
180 local $SIG{__DIE__};
181 my $d;
182 if (1) {
183 $d = new Data::Dumper([$_[0]], ["*var"]);
184 $d->Terse(1);
185 $d->Indent(2);
186 $d->Quotekeys(0);
187 $d->Useqq(1);
188 #$d->Bless(...);
189 $d->Seen($_[1]) if @_ > 1;
190 $d = $d->Dump();
191 }
192 $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
193 $d
194 } || "[unable to dump $_[0]: '$@']";
195}
196
197use JSON::Syck (); # TODO# replace by JSON::PC once working
198
199=item $ref = cf::from_json $json
200
201Converts a JSON string into the corresponding perl data structure.
202
203=cut
204
205sub from_json($) {
206 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
207 JSON::Syck::Load $_[0]
208}
209
210=item $json = cf::to_json $ref
211
212Converts a perl data structure into its JSON representation.
213
214=cut
215
216sub to_json($) {
217 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
218 JSON::Syck::Dump $_[0]
219}
220
221=item cf::lock_wait $string
222
223Wait until the given lock is available. See cf::lock_acquire.
224
225=item my $lock = cf::lock_acquire $string
226
227Wait until the given lock is available and then acquires it and returns
228a Coro::guard object. If the guard object gets destroyed (goes out of scope,
229for example when the coroutine gets canceled), the lock is automatically
230returned.
231
232Lock names should begin with a unique identifier (for example, cf::map::find
233uses map_find and cf::map::load uses map_load).
234
235=cut
236
237our %LOCK;
238
239sub lock_wait($) {
240 my ($key) = @_;
241
242 # wait for lock, if any
243 while ($LOCK{$key}) {
244 push @{ $LOCK{$key} }, $Coro::current;
245 Coro::schedule;
246 }
247}
248
249sub lock_acquire($) {
250 my ($key) = @_;
251
252 # wait, to be sure we are not locked
253 lock_wait $key;
254
255 $LOCK{$key} = [];
256
257 Coro::guard {
258 # wake up all waiters, to be on the safe side
259 $_->ready for @{ delete $LOCK{$key} };
260 }
261}
262
263sub freeze_mainloop {
264 return unless $TICK_WATCHER->is_active;
265
266 my $guard = Coro::guard {
267 $TICK_WATCHER->start;
268 $WRITE_RUNTIME_WATCHER->start;
269 };
270 $WRITE_RUNTIME_WATCHER->stop;
271 $TICK_WATCHER->stop;
272 $guard
273}
274
275=item cf::async { BLOCK }
276
277Currently the same as Coro::async_pool, meaning you cannot use
278C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
279thing you are allowed to do is call C<prio> on it.
280
281=cut
282
283BEGIN { *async = \&Coro::async_pool }
284
285=item cf::sync_job { BLOCK }
286
287The design of crossfire+ requires that the main coro ($Coro::main) is
288always able to handle events or runnable, as crossfire+ is only partly
289reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
290
291If it must be done, put the blocking parts into C<sync_job>. This will run
292the given BLOCK in another coroutine while waiting for the result. The
293server will be frozen during this time, so the block should either finish
294fast or be very important.
295
296=cut
297
298sub sync_job(&) {
299 my ($job) = @_;
300
301 if ($Coro::current == $Coro::main) {
302 # this is the main coro, too bad, we have to block
303 # till the operation succeeds, freezing the server :/
304
305 # TODO: use suspend/resume instead
306 # (but this is cancel-safe)
307 my $freeze_guard = freeze_mainloop;
308
309 my $busy = 1;
310 my @res;
311
312 (async {
313 @res = eval { $job->() };
314 warn $@ if $@;
315 undef $busy;
316 })->prio (Coro::PRIO_MAX);
317
318 while ($busy) {
319 Coro::cede or Event::one_event;
320 }
321
322 wantarray ? @res : $res[0]
323 } else {
324 # we are in another coroutine, how wonderful, everything just works
325
326 $job->()
327 }
328}
329
330=item $coro = cf::async_ext { BLOCK }
331
332Like async, but this coro is automatically being canceled when the
333extension calling this is being unloaded.
334
335=cut
336
337sub async_ext(&) {
81 my $event_code = shift; 338 my $cb = shift;
82 339
83 my $cb = $hook[$event_code]{$extension} 340 my $coro = &Coro::async ($cb);
341
342 $coro->on_destroy (sub {
343 delete $EXT_CORO{$coro+0};
344 });
345 $EXT_CORO{$coro+0} = $coro;
346
347 $coro
348}
349
350sub write_runtime {
351 my $runtime = cf::localdir . "/runtime";
352
353 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
84 or return; 354 or return;
85 355
86 &$cb 356 my $value = $cf::RUNTIME + 90 + 10;
87} 357 # 10 is the runtime save interval, for a monotonic clock
358 # 60 allows for the watchdog to kill the server.
88 359
89sub inject_global_event { 360 (aio_write $fh, 0, (length $value), $value, 0) <= 0
361 and return;
362
363 aio_fsync $fh
364 and return;
365
366 close $fh
367 or return;
368
369 aio_rename "$runtime~", $runtime
370 and return;
371
372 1
373}
374
375=back
376
377=cut
378
379#############################################################################
380
381=head2 ATTACHABLE OBJECTS
382
383Many objects in crossfire are so-called attachable objects. That means you can
384attach callbacks/event handlers (a collection of which is called an "attachment")
385to it. All such attachable objects support the following methods.
386
387In the following description, CLASS can be any of C<global>, C<object>
388C<player>, C<client> or C<map> (i.e. the attachable objects in
389crossfire+).
390
391=over 4
392
393=item $attachable->attach ($attachment, key => $value...)
394
395=item $attachable->detach ($attachment)
396
397Attach/detach a pre-registered attachment to a specific object and give it
398the specified key/value pairs as arguments.
399
400Example, attach a minesweeper attachment to the given object, making it a
40110x10 minesweeper game:
402
403 $obj->attach (minesweeper => width => 10, height => 10);
404
405=item $bool = $attachable->attached ($name)
406
407Checks wether the named attachment is currently attached to the object.
408
409=item cf::CLASS->attach ...
410
411=item cf::CLASS->detach ...
412
413Define an anonymous attachment and attach it to all objects of the given
414CLASS. See the next function for an explanation of its arguments.
415
416You can attach to global events by using the C<cf::global> class.
417
418Example, log all player logins:
419
420 cf::player->attach (
421 on_login => sub {
422 my ($pl) = @_;
423 ...
424 },
425 );
426
427Example, attach to the jeweler skill:
428
429 cf::object->attach (
430 type => cf::SKILL,
431 subtype => cf::SK_JEWELER,
432 on_use_skill => sub {
433 my ($sk, $ob, $part, $dir, $msg) = @_;
434 ...
435 },
436 );
437
438=item cf::CLASS::attachment $name, ...
439
440Register an attachment by C<$name> through which attachable objects of the
441given CLASS can refer to this attachment.
442
443Some classes such as crossfire maps and objects can specify attachments
444that are attached at load/instantiate time, thus the need for a name.
445
446These calls expect any number of the following handler/hook descriptions:
447
448=over 4
449
450=item prio => $number
451
452Set the priority for all following handlers/hooks (unless overwritten
453by another C<prio> setting). Lower priority handlers get executed
454earlier. The default priority is C<0>, and many built-in handlers are
455registered at priority C<-1000>, so lower priorities should not be used
456unless you know what you are doing.
457
458=item type => $type
459
460(Only for C<< cf::object->attach >> calls), limits the attachment to the
461given type of objects only (the additional parameter C<subtype> can be
462used to further limit to the given subtype).
463
464=item on_I<event> => \&cb
465
466Call the given code reference whenever the named event happens (event is
467something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
468handlers are recognised generally depends on the type of object these
469handlers attach to).
470
471See F<include/eventinc.h> for the full list of events supported, and their
472class.
473
474=item package => package::
475
476Look for sub functions of the name C<< on_I<event> >> in the given
477package and register them. Only handlers for eevents supported by the
478object/class are recognised.
479
480=back
481
482Example, define an attachment called "sockpuppet" that calls the given
483event handler when a monster attacks:
484
485 cf::object::attachment sockpuppet =>
486 on_skill_attack => sub {
487 my ($self, $victim) = @_;
488 ...
489 }
490 }
491
492=item $attachable->valid
493
494Just because you have a perl object does not mean that the corresponding
495C-level object still exists. If you try to access an object that has no
496valid C counterpart anymore you get an exception at runtime. This method
497can be used to test for existence of the C object part without causing an
498exception.
499
500=cut
501
502# the following variables are defined in .xs and must not be re-created
503our @CB_GLOBAL = (); # registry for all global events
504our @CB_ATTACHABLE = (); # registry for all attachables
505our @CB_OBJECT = (); # all objects (should not be used except in emergency)
506our @CB_PLAYER = ();
507our @CB_CLIENT = ();
508our @CB_TYPE = (); # registry for type (cf-object class) based events
509our @CB_MAP = ();
510
511my %attachment;
512
513sub cf::attachable::thawer_merge {
514 # simply override everything except _meta
515 local $_[0]{_meta};
516 %{$_[0]} = %{$_[1]};
517}
518
519sub _attach_cb($$$$) {
520 my ($registry, $event, $prio, $cb) = @_;
521
522 use sort 'stable';
523
524 $cb = [$prio, $cb];
525
526 @{$registry->[$event]} = sort
527 { $a->[0] cmp $b->[0] }
528 @{$registry->[$event] || []}, $cb;
529}
530
531# hack
532my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
533
534# attach handles attaching event callbacks
535# the only thing the caller has to do is pass the correct
536# registry (== where the callback attaches to).
537sub _attach {
538 my ($registry, $klass, @arg) = @_;
539
540 my $object_type;
541 my $prio = 0;
542 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
543
544 #TODO: get rid of this hack
545 if ($attachable_klass{$klass}) {
546 %cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
547 }
548
549 while (@arg) {
550 my $type = shift @arg;
551
552 if ($type eq "prio") {
553 $prio = shift @arg;
554
555 } elsif ($type eq "type") {
556 $object_type = shift @arg;
557 $registry = $CB_TYPE[$object_type] ||= [];
558
559 } elsif ($type eq "subtype") {
560 defined $object_type or Carp::croak "subtype specified without type";
561 my $object_subtype = shift @arg;
562 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
563
564 } elsif ($type eq "package") {
565 my $pkg = shift @arg;
566
567 while (my ($name, $id) = each %cb_id) {
568 if (my $cb = $pkg->can ($name)) {
569 _attach_cb $registry, $id, $prio, $cb;
570 }
571 }
572
573 } elsif (exists $cb_id{$type}) {
574 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
575
576 } elsif (ref $type) {
577 warn "attaching objects not supported, ignoring.\n";
578
579 } else {
580 shift @arg;
581 warn "attach argument '$type' not supported, ignoring.\n";
582 }
583 }
584}
585
586sub _object_attach {
587 my ($obj, $name, %arg) = @_;
588
589 return if exists $obj->{_attachment}{$name};
590
591 if (my $attach = $attachment{$name}) {
592 my $registry = $obj->registry;
593
594 for (@$attach) {
595 my ($klass, @attach) = @$_;
596 _attach $registry, $klass, @attach;
597 }
598
599 $obj->{$name} = \%arg;
600 } else {
601 warn "object uses attachment '$name' that is not available, postponing.\n";
602 }
603
604 $obj->{_attachment}{$name} = undef;
605}
606
607sub cf::attachable::attach {
608 if (ref $_[0]) {
609 _object_attach @_;
610 } else {
611 _attach shift->_attach_registry, @_;
612 }
613};
614
615# all those should be optimised
616sub cf::attachable::detach {
617 my ($obj, $name) = @_;
618
619 if (ref $obj) {
620 delete $obj->{_attachment}{$name};
621 reattach ($obj);
622 } else {
623 Carp::croak "cannot, currently, detach class attachments";
624 }
625};
626
627sub cf::attachable::attached {
628 my ($obj, $name) = @_;
629
630 exists $obj->{_attachment}{$name}
631}
632
633for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
634 eval "#line " . __LINE__ . " 'cf.pm'
635 sub cf::\L$klass\E::_attach_registry {
636 (\\\@CB_$klass, KLASS_$klass)
637 }
638
639 sub cf::\L$klass\E::attachment {
640 my \$name = shift;
641
642 \$attachment{\$name} = [[KLASS_$klass, \@_]];
643 }
644 ";
645 die if $@;
646}
647
648our $override;
649our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
650
651sub override {
652 $override = 1;
653 @invoke_results = ();
654}
655
656sub do_invoke {
90 my $event = shift; 657 my $event = shift;
658 my $callbacks = shift;
91 659
92 my $cb = $hook[$event] 660 @invoke_results = ();
661
662 local $override;
663
664 for (@$callbacks) {
665 eval { &{$_->[1]} };
666
667 if ($@) {
668 warn "$@";
669 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
670 override;
671 }
672
673 return 1 if $override;
674 }
675
676 0
677}
678
679=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
680
681=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
682
683Generate an object-specific event with the given arguments.
684
685This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
686removed in future versions), and there is no public API to access override
687results (if you must, access C<@cf::invoke_results> directly).
688
689=back
690
691=cut
692
693#############################################################################
694# object support
695
696sub reattach {
697 # basically do the same as instantiate, without calling instantiate
698 my ($obj) = @_;
699
700 bless $obj, ref $obj; # re-bless in case extensions have been reloaded
701
702 my $registry = $obj->registry;
703
704 @$registry = ();
705
706 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
707
708 for my $name (keys %{ $obj->{_attachment} || {} }) {
709 if (my $attach = $attachment{$name}) {
710 for (@$attach) {
711 my ($klass, @attach) = @$_;
712 _attach $registry, $klass, @attach;
713 }
714 } else {
715 warn "object uses attachment '$name' that is not available, postponing.\n";
716 }
717 }
718}
719
720cf::attachable->attach (
721 prio => -1000000,
722 on_instantiate => sub {
723 my ($obj, $data) = @_;
724
725 $data = from_json $data;
726
727 for (@$data) {
728 my ($name, $args) = @$_;
729
730 $obj->attach ($name, %{$args || {} });
731 }
732 },
733 on_reattach => \&reattach,
734 on_clone => sub {
735 my ($src, $dst) = @_;
736
737 @{$dst->registry} = @{$src->registry};
738
739 %$dst = %$src;
740
741 %{$dst->{_attachment}} = %{$src->{_attachment}}
742 if exists $src->{_attachment};
743 },
744);
745
746sub object_freezer_save {
747 my ($filename, $rdata, $objs) = @_;
748
749 sync_job {
750 if (length $$rdata) {
751 warn sprintf "saving %s (%d,%d)\n",
752 $filename, length $$rdata, scalar @$objs;
753
754 if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
755 chmod SAVE_MODE, $fh;
756 aio_write $fh, 0, (length $$rdata), $$rdata, 0;
757 aio_fsync $fh;
758 close $fh;
759
760 if (@$objs) {
761 if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
762 chmod SAVE_MODE, $fh;
763 my $data = Storable::nfreeze { version => 1, objs => $objs };
764 aio_write $fh, 0, (length $data), $data, 0;
765 aio_fsync $fh;
766 close $fh;
767 aio_rename "$filename.pst~", "$filename.pst";
768 }
769 } else {
770 aio_unlink "$filename.pst";
771 }
772
773 aio_rename "$filename~", $filename;
774 } else {
775 warn "FATAL: $filename~: $!\n";
776 }
777 } else {
778 aio_unlink $filename;
779 aio_unlink "$filename.pst";
780 }
781 }
782}
783
784sub object_freezer_as_string {
785 my ($rdata, $objs) = @_;
786
787 use Data::Dumper;
788
789 $$rdata . Dumper $objs
790}
791
792sub object_thawer_load {
793 my ($filename) = @_;
794
795 my ($data, $av);
796
797 (aio_load $filename, $data) >= 0
93 or return; 798 or return;
94 799
95 List::Util::max map &$_, values %$cb 800 unless (aio_stat "$filename.pst") {
96} 801 (aio_load "$filename.pst", $av) >= 0
97 802 or return;
98sub inject_command { 803 $av = eval { (Storable::thaw $av)->{objs} };
99 my ($name, $obj, $params) = @_;
100
101 for my $cmd (@{ $command{$name} }) {
102 $cmd->[1]->($obj, $params);
103 } 804 }
104 805
105 -1 806 warn sprintf "loading %s (%d)\n",
807 $filename, length $data, scalar @{$av || []};#d#
808 return ($data, $av);
106} 809}
810
811#############################################################################
812# command handling &c
813
814=item cf::register_command $name => \&callback($ob,$args);
815
816Register a callback for execution when the client sends the user command
817$name.
818
819=cut
107 820
108sub register_command { 821sub register_command {
109 my ($name, $time, $cb) = @_; 822 my ($name, $cb) = @_;
110 823
111 my $caller = caller; 824 my $caller = caller;
112 #warn "registering command '$name/$time' to '$caller'"; 825 #warn "registering command '$name/$time' to '$caller'";
113 826
114 push @{ $command{$name} }, [$time, $cb, $caller]; 827 push @{ $COMMAND{$name} }, [$caller, $cb];
115 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
116} 828}
829
830=item cf::register_extcmd $name => \&callback($pl,$packet);
831
832Register a callbackf ro execution when the client sends an extcmd packet.
833
834If the callback returns something, it is sent back as if reply was being
835called.
836
837=cut
117 838
118sub register_extcmd { 839sub register_extcmd {
119 my ($name, $cb) = @_; 840 my ($name, $cb) = @_;
120 841
121 my $caller = caller; 842 $EXTCMD{$name} = $cb;
122 #warn "registering extcmd '$name' to '$caller'";
123
124 $extcmd{$name} = [$cb, $caller];
125} 843}
126 844
127sub register { 845cf::player->attach (
128 my ($base, $pkg) = @_; 846 on_command => sub {
847 my ($pl, $name, $params) = @_;
129 848
130 for my $idx (0 .. $#EVENT) { 849 my $cb = $COMMAND{$name}
131 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) { 850 or return;
132 #warn "registering $EVENT[$idx] hook to '$pkg'\n"; 851
133 $hook[$idx]{$base} = $ref; 852 for my $cmd (@$cb) {
853 $cmd->[1]->($pl->ob, $params);
134 } 854 }
855
856 cf::override;
135 } 857 },
136} 858 on_extcmd => sub {
859 my ($pl, $buf) = @_;
860
861 my $msg = eval { from_json $buf };
862
863 if (ref $msg) {
864 if (my $cb = $EXTCMD{$msg->{msgtype}}) {
865 if (my %reply = $cb->($pl, $msg)) {
866 $pl->ext_reply ($msg->{msgid}, %reply);
867 }
868 }
869 } else {
870 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
871 }
872
873 cf::override;
874 },
875);
137 876
138sub load_extension { 877sub load_extension {
139 my ($path) = @_; 878 my ($path) = @_;
140 879
141 $path =~ /([^\/\\]+)\.ext$/ or die "$path"; 880 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
142 my $base = $1; 881 my $base = $1;
143 my $pkg = $1; 882 my $pkg = $1;
144 $pkg =~ s/[^[:word:]]/_/g; 883 $pkg =~ s/[^[:word:]]/_/g;
145 $pkg = "cf::ext::$pkg"; 884 $pkg = "ext::$pkg";
146 885
147 warn "loading '$path' into '$pkg'\n"; 886 warn "... loading '$path' into '$pkg'\n";
148 887
149 open my $fh, "<:utf8", $path 888 open my $fh, "<:utf8", $path
150 or die "$path: $!"; 889 or die "$path: $!";
151 890
152 my $source = 891 my $source =
153 "package $pkg; use strict; use utf8;\n" 892 "package $pkg; use strict; use utf8;\n"
154 . "#line 1 \"$path\"\n{\n" 893 . "#line 1 \"$path\"\n{\n"
155 . (do { local $/; <$fh> }) 894 . (do { local $/; <$fh> })
156 . "\n};\n1"; 895 . "\n};\n1";
157 896
158 eval $source 897 unless (eval $source) {
159 or die "$path: $@"; 898 my $msg = $@ ? "$path: $@\n"
899 : "extension disabled.\n";
900 if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
901 warn $@;
902 warn "mandatory extension failed to load, exiting.\n";
903 exit 1;
904 }
905 die $@;
906 }
160 907
161 push @exts, $pkg; 908 push @EXTS, $pkg;
162 $ext_pkg{$base} = $pkg;
163
164# no strict 'refs';
165# @{"$pkg\::ISA"} = cf::ext::;
166
167 register $base, $pkg;
168}
169
170sub unload_extension {
171 my ($pkg) = @_;
172
173 warn "removing extension $pkg\n";
174
175 if (my $cb = $pkg->can ("on_unload")) {
176 $cb->($pkg);
177 }
178
179 # remove hooks
180 for my $idx (0 .. $#EVENT) {
181 delete $hook[$idx]{$pkg};
182 }
183
184 # remove commands
185 for my $name (keys %command) {
186 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
187
188 if (@cb) {
189 $command{$name} = \@cb;
190 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
191 } else {
192 delete $command{$name};
193 delete $COMMAND{"$name\000"};
194 }
195 }
196
197 # remove extcmds
198 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
199 delete $extcmd{$name};
200 }
201
202 Symbol::delete_package $pkg;
203} 909}
204 910
205sub load_extensions { 911sub load_extensions {
206 my $LIBDIR = maps_directory "perl";
207
208 for my $ext (<$LIBDIR/*.ext>) { 912 for my $ext (<$LIBDIR/*.ext>) {
209 next unless -r $ext; 913 next unless -r $ext;
210 eval { 914 eval {
211 load_extension $ext; 915 load_extension $ext;
212 1 916 1
213 } or warn "$ext not loaded: $@"; 917 } or warn "$ext not loaded: $@";
214 } 918 }
215} 919}
216 920
217register_command "perl-reload", 0, sub { 921#############################################################################
922
923=head2 CORE EXTENSIONS
924
925Functions and methods that extend core crossfire objects.
926
927=cut
928
929package cf::player;
930
931use Coro::AIO;
932
933=head3 cf::player
934
935=over 4
936
937=item cf::player::find $login
938
939Returns the given player object, loading it if necessary (might block).
940
941=cut
942
943sub playerdir($) {
944 cf::localdir
945 . "/"
946 . cf::playerdir
947 . "/"
948 . (ref $_[0] ? $_[0]->ob->name : $_[0])
949}
950
951sub path($) {
952 my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
953
954 (playerdir $login) . "/$login.pl"
955}
956
957sub find_active($) {
958 $cf::PLAYER{$_[0]}
959 and $cf::PLAYER{$_[0]}->active
960 and $cf::PLAYER{$_[0]}
961}
962
963sub exists($) {
964 my ($login) = @_;
965
966 $cf::PLAYER{$login}
967 or cf::sync_job { !aio_stat path $login }
968}
969
970sub find($) {
971 return $cf::PLAYER{$_[0]} || do {
972 my $login = $_[0];
973
974 my $guard = cf::lock_acquire "user_find:$login";
975
976 $cf::PLAYER{$_[0]} || do {
977 my $pl = load_pl path $login
978 or return;
979 $cf::PLAYER{$login} = $pl
980 }
981 }
982}
983
984sub save($) {
985 my ($pl) = @_;
986
987 return if $pl->{deny_save};
988
989 my $path = path $pl;
990 my $guard = cf::lock_acquire "user_save:$path";
991
992 return if $pl->{deny_save};
993
994 aio_mkdir playerdir $pl, 0770;
995 $pl->{last_save} = $cf::RUNTIME;
996
997 $pl->save_pl ($path);
998 Coro::cede;
999}
1000
1001sub new($) {
1002 my ($login) = @_;
1003
1004 my $self = create;
1005
1006 $self->ob->name ($login);
1007 $self->{deny_save} = 1;
1008
1009 $cf::PLAYER{$login} = $self;
1010
1011 $self
1012}
1013
1014=item $pl->quit_character
1015
1016Nukes the player without looking back. If logged in, the connection will
1017be destroyed. May block for a long time.
1018
1019=cut
1020
1021sub quit_character {
1022 my ($pl) = @_;
1023
1024 $pl->{deny_save} = 1;
1025 $pl->password ("*"); # this should lock out the player until we nuked the dir
1026
1027 $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1028 $pl->deactivate;
1029 $pl->invoke (cf::EVENT_PLAYER_QUIT);
1030 $pl->ns->destroy if $pl->ns;
1031
1032 my $path = playerdir $pl;
1033 my $temp = "$path~$cf::RUNTIME~deleting~";
1034 aio_rename $path, $temp;
1035 delete $cf::PLAYER{$pl->ob->name};
1036 $pl->destroy;
1037 IO::AIO::aio_rmtree $temp;
1038}
1039
1040=item cf::player::list_logins
1041
1042Returns am arrayref of all valid playernames in the system, can take a
1043while and may block, so not sync_job-capable, ever.
1044
1045=cut
1046
1047sub list_logins {
1048 my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
1049 or return [];
1050
1051 my @logins;
1052
1053 for my $login (@$dirs) {
1054 my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
1055 aio_read $fh, 0, 512, my $buf, 0 or next;
1056 $buf !~ /^password -------------$/m or next; # official not-valid tag
1057
1058 utf8::decode $login;
1059 push @logins, $login;
1060 }
1061
1062 \@logins
1063}
1064
1065=item $player->maps
1066
1067Returns an arrayref of map paths that are private for this
1068player. May block.
1069
1070=cut
1071
1072sub maps($) {
1073 my ($pl) = @_;
1074
1075 my $files = aio_readdir playerdir $pl
1076 or return;
1077
1078 my @paths;
1079
1080 for (@$files) {
1081 utf8::decode $_;
1082 next if /\.(?:pl|pst)$/;
1083 next unless /^$PATH_SEP/o;
1084
1085 push @paths, cf::map::normalise "~" . $pl->ob->name . "/" . $_;
1086 }
1087
1088 \@paths
1089}
1090
1091=item $player->ext_reply ($msgid, $msgtype, %msg)
1092
1093Sends an ext reply to the player.
1094
1095=cut
1096
1097sub ext_reply($$$%) {
1098 my ($self, $id, %msg) = @_;
1099
1100 $msg{msgid} = $id;
1101
1102 $self->send ("ext " . cf::to_json \%msg);
1103}
1104
1105package cf;
1106
1107=back
1108
1109
1110=head3 cf::map
1111
1112=over 4
1113
1114=cut
1115
1116package cf::map;
1117
1118use Fcntl;
1119use Coro::AIO;
1120
1121use overload
1122 '""' => \&as_string,
1123 fallback => 1;
1124
1125our $MAX_RESET = 3600;
1126our $DEFAULT_RESET = 3000;
1127
1128sub generate_random_map {
1129 my ($self, $rmp) = @_;
1130 # mit "rum" bekleckern, nicht
1131 $self->_create_random_map (
1132 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1133 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1134 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1135 $rmp->{exit_on_final_map},
1136 $rmp->{xsize}, $rmp->{ysize},
1137 $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1138 $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1139 $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1140 $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1141 $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1142 (cf::region::find $rmp->{region}), $rmp->{custom}
1143 )
1144}
1145
1146=item cf::map->register ($regex, $prio)
1147
1148Register a handler for the map path matching the given regex at the
1149givne priority (higher is better, built-in handlers have priority 0, the
1150default).
1151
1152=cut
1153
1154sub register {
1155 my (undef, $regex, $prio) = @_;
1156 my $pkg = caller;
1157
1158 no strict;
1159 push @{"$pkg\::ISA"}, __PACKAGE__;
1160
1161 $EXT_MAP{$pkg} = [$prio, qr<$regex>];
1162}
1163
1164# also paths starting with '/'
1165$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
1166
1167sub thawer_merge {
1168 my ($self, $merge) = @_;
1169
1170 # we have to keep some variables in memory intact
1171 local $self->{path};
1172 local $self->{load_path};
1173 local $self->{deny_save};
1174 local $self->{deny_reset};
1175
1176 $self->SUPER::thawer_merge ($merge);
1177}
1178
1179sub normalise {
218 my ($who, $arg) = @_; 1180 my ($path, $base) = @_;
219 1181
220 if ($who->flag (FLAG_WIZ)) { 1182 $path = "$path"; # make sure its a string
221 $who->message ("reloading...");
222 1183
223 warn "reloading...\n"; 1184 $path =~ s/\.map$//;
1185
1186 # map plan:
1187 #
1188 # /! non-realised random map exit (special hack!)
1189 # {... are special paths that are not being touched
1190 # ?xxx/... are special absolute paths
1191 # ?random/... random maps
1192 # /... normal maps
1193 # ~user/... per-player map of a specific user
1194
1195 $path =~ s/$PATH_SEP/\//go;
1196
1197 # treat it as relative path if it starts with
1198 # something that looks reasonable
1199 if ($path =~ m{^(?:\./|\.\./|\w)}) {
1200 $base or Carp::carp "normalise called with relative path and no base: '$path'";
1201
1202 $base =~ s{[^/]+/?$}{};
1203 $path = "$base/$path";
1204 }
1205
1206 for ($path) {
1207 redo if s{//}{/};
1208 redo if s{/\.?/}{/};
1209 redo if s{/[^/]+/\.\./}{/};
1210 }
1211
1212 $path
1213}
1214
1215sub new_from_path {
1216 my (undef, $path, $base) = @_;
1217
1218 return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
1219
1220 $path = normalise $path, $base;
1221
1222 for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
1223 if ($path =~ $EXT_MAP{$pkg}[1]) {
1224 my $self = bless cf::map::new, $pkg;
1225 $self->{path} = $path; $self->path ($path);
1226 $self->init; # pass $1 etc.
1227 return $self;
1228 }
1229 }
1230
1231 Carp::carp "unable to resolve path '$path' (base '$base').";
1232 ()
1233}
1234
1235sub init {
1236 my ($self) = @_;
1237
1238 $self
1239}
1240
1241sub as_string {
1242 my ($self) = @_;
1243
1244 "$self->{path}"
1245}
1246
1247# the displayed name, this is a one way mapping
1248sub visible_name {
1249 &as_string
1250}
1251
1252# the original (read-only) location
1253sub load_path {
1254 my ($self) = @_;
1255
1256 sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
1257}
1258
1259# the temporary/swap location
1260sub save_path {
1261 my ($self) = @_;
1262
1263 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1264 sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
1265}
1266
1267# the unique path, undef == no special unique path
1268sub uniq_path {
1269 my ($self) = @_;
1270
1271 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1272 sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
1273}
1274
1275# and all this just because we cannot iterate over
1276# all maps in C++...
1277sub change_all_map_light {
1278 my ($change) = @_;
1279
1280 $_->change_map_light ($change)
1281 for grep $_->outdoor, values %cf::MAP;
1282}
1283
1284sub unlink_save {
1285 my ($self) = @_;
1286
1287 utf8::encode (my $save = $self->save_path);
1288 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1289 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1290}
1291
1292sub load_header_from($) {
1293 my ($self, $path) = @_;
1294
1295 utf8::encode $path;
1296 aio_open $path, O_RDONLY, 0
1297 or return;
1298
1299 $self->_load_header ($path)
1300 or return;
1301
1302 $self->{load_path} = $path;
1303
1304 1
1305}
1306
1307sub load_header_orig {
1308 my ($self) = @_;
1309
1310 $self->load_header_from ($self->load_path)
1311}
1312
1313sub load_header_temp {
1314 my ($self) = @_;
1315
1316 $self->load_header_from ($self->save_path)
1317}
1318
1319sub prepare_temp {
1320 my ($self) = @_;
1321
1322 $self->last_access ((delete $self->{last_access})
1323 || $cf::RUNTIME); #d#
1324 # safety
1325 $self->{instantiate_time} = $cf::RUNTIME
1326 if $self->{instantiate_time} > $cf::RUNTIME;
1327}
1328
1329sub prepare_orig {
1330 my ($self) = @_;
1331
1332 $self->{load_original} = 1;
1333 $self->{instantiate_time} = $cf::RUNTIME;
1334 $self->last_access ($cf::RUNTIME);
1335 $self->instantiate;
1336}
1337
1338sub load_header {
1339 my ($self) = @_;
1340
1341 if ($self->load_header_temp) {
1342 $self->prepare_temp;
1343 } else {
1344 $self->load_header_orig
1345 or return;
1346 $self->prepare_orig;
1347 }
1348
1349 1
1350}
1351
1352sub find;
1353sub find {
1354 my ($path, $origin) = @_;
1355
1356 $path = normalise $path, $origin && $origin->path;
1357
1358 cf::lock_wait "map_find:$path";
1359
1360 $cf::MAP{$path} || do {
1361 my $guard = cf::lock_acquire "map_find:$path";
1362 my $map = new_from_path cf::map $path
1363 or return;
1364
1365 $map->{last_save} = $cf::RUNTIME;
1366
1367 $map->load_header
1368 or return;
1369
1370 if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
1371 # doing this can freeze the server in a sync job, obviously
1372 #$cf::WAIT_FOR_TICK->wait;
1373 $map->reset;
1374 undef $guard;
1375 return find $path;
1376 }
1377
1378 $cf::MAP{$path} = $map
1379 }
1380}
1381
1382sub pre_load { }
1383sub post_load { }
1384
1385sub load {
1386 my ($self) = @_;
1387
1388 local $self->{deny_reset} = 1; # loading can take a long time
1389
1390 my $path = $self->{path};
1391 my $guard = cf::lock_acquire "map_load:$path";
1392
1393 return if $self->in_memory != cf::MAP_SWAPPED;
1394
1395 $self->in_memory (cf::MAP_LOADING);
1396
1397 $self->alloc;
1398
1399 $self->pre_load;
1400
1401 $self->_load_objects ($self->{load_path}, 1)
1402 or return;
1403
1404 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1405 if delete $self->{load_original};
1406
1407 if (my $uniq = $self->uniq_path) {
1408 utf8::encode $uniq;
1409 if (aio_open $uniq, O_RDONLY, 0) {
1410 $self->clear_unique_items;
1411 $self->_load_objects ($uniq, 0);
1412 }
1413 }
1414
1415 Coro::cede;
1416
1417 # now do the right thing for maps
1418 $self->link_multipart_objects;
1419
1420 unless ($self->{deny_activate}) {
1421 $self->decay_objects;
1422 $self->fix_auto_apply;
1423 $self->update_buttons;
1424 Coro::cede;
1425 $self->set_darkness_map;
1426 $self->difficulty ($self->estimate_difficulty)
1427 unless $self->difficulty;
1428 Coro::cede;
1429 $self->activate;
1430 }
1431
1432 $self->post_load;
1433
1434 $self->in_memory (cf::MAP_IN_MEMORY);
1435}
1436
1437sub customise_for {
1438 my ($self, $ob) = @_;
1439
1440 return find "~" . $ob->name . "/" . $self->{path}
1441 if $self->per_player;
1442
1443 $self
1444}
1445
1446# find and load all maps in the 3x3 area around a map
1447sub load_diag {
1448 my ($map) = @_;
1449
1450 my @diag; # diagonal neighbours
1451
1452 for (0 .. 3) {
1453 my $neigh = $map->tile_path ($_)
1454 or next;
1455 $neigh = find $neigh, $map
1456 or next;
1457 $neigh->load;
1458
1459 push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
1460 [$neigh->tile_path (($_ + 1) % 4), $neigh];
1461 }
1462
1463 for (@diag) {
1464 my $neigh = find @$_
1465 or next;
1466 $neigh->load;
1467 }
1468}
1469
1470sub find_sync {
1471 my ($path, $origin) = @_;
1472
1473 cf::sync_job { find $path, $origin }
1474}
1475
1476sub do_load_sync {
1477 my ($map) = @_;
1478
1479 cf::sync_job { $map->load };
1480}
1481
1482our %MAP_PREFETCH;
1483our $MAP_PREFETCHER = undef;
1484
1485sub find_async {
1486 my ($path, $origin) = @_;
1487
1488 $path = normalise $path, $origin && $origin->{path};
1489
1490 if (my $map = $cf::MAP{$path}) {
1491 return $map if $map->in_memory == cf::MAP_IN_MEMORY;
1492 }
1493
1494 undef $MAP_PREFETCH{$path};
1495 $MAP_PREFETCHER ||= cf::async {
1496 while (%MAP_PREFETCH) {
1497 for my $path (keys %MAP_PREFETCH) {
1498 my $map = find $path
1499 or next;
1500 $map->load;
1501
1502 delete $MAP_PREFETCH{$path};
1503 }
1504 }
1505 undef $MAP_PREFETCHER;
1506 };
1507 $MAP_PREFETCHER->prio (6);
1508
1509 ()
1510}
1511
1512sub save {
1513 my ($self) = @_;
1514
1515 my $lock = cf::lock_acquire "map_data:" . $self->path;
1516
1517 $self->{last_save} = $cf::RUNTIME;
1518
1519 return unless $self->dirty;
1520
1521 my $save = $self->save_path; utf8::encode $save;
1522 my $uniq = $self->uniq_path; utf8::encode $uniq;
1523
1524 $self->{load_path} = $save;
1525
1526 return if $self->{deny_save};
1527
1528 local $self->{last_access} = $self->last_access;#d#
1529
1530 cf::async {
1531 $_->contr->save for $self->players;
1532 };
1533
1534 if ($uniq) {
1535 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1536 $self->_save_objects ($uniq, cf::IO_UNIQUES);
1537 } else {
1538 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1539 }
1540}
1541
1542sub swap_out {
1543 my ($self) = @_;
1544
1545 # save first because save cedes
1546 $self->save;
1547
1548 my $lock = cf::lock_acquire "map_data:" . $self->path;
1549
1550 return if $self->players;
1551 return if $self->in_memory != cf::MAP_IN_MEMORY;
1552 return if $self->{deny_save};
1553
1554 $self->clear;
1555 $self->in_memory (cf::MAP_SWAPPED);
1556}
1557
1558sub reset_at {
1559 my ($self) = @_;
1560
1561 # TODO: safety, remove and allow resettable per-player maps
1562 return 1e99 if $self->isa ("ext::map_per_player");#d#
1563 return 1e99 if $self->{deny_reset};
1564
1565 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1566 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1567
1568 $time + $to
1569}
1570
1571sub should_reset {
1572 my ($self) = @_;
1573
1574 $self->reset_at <= $cf::RUNTIME
1575}
1576
1577sub reset {
1578 my ($self) = @_;
1579
1580 my $lock = cf::lock_acquire "map_data:$self->{path}";
1581
1582 return if $self->players;
1583 return if $self->isa ("ext::map_per_player");#d#
1584
1585 warn "resetting map ", $self->path;#d#
1586
1587 delete $cf::MAP{$self->path};
1588
1589 $self->in_memory (cf::MAP_SWAPPED);
1590 $self->clear;
1591
1592 $_->clear_links_to ($self) for values %cf::MAP;
1593
1594 $self->unlink_save;
1595 $self->destroy;
1596}
1597
1598my $nuke_counter = "aaaa";
1599
1600sub nuke {
1601 my ($self) = @_;
1602
1603 delete $cf::MAP{$self->path};
1604
1605 $self->unlink_save;
1606
1607 bless $self, "cf::map";
1608 delete $self->{deny_reset};
1609 $self->{deny_save} = 1;
1610 $self->reset_timeout (1);
1611 $self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
1612
1613 $cf::MAP{$self->path} = $self;
1614
1615 $self->reset; # polite request, might not happen
1616}
1617
1618=item cf::map::unique_maps
1619
1620Returns an arrayref of paths of all shared maps that have
1621instantiated unique items. May block.
1622
1623=cut
1624
1625sub unique_maps() {
1626 my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
1627 or return;
1628
1629 my @paths;
1630
1631 for (@$files) {
1632 utf8::decode $_;
1633 next if /\.pst$/;
1634 next unless /^$PATH_SEP/o;
1635
1636 push @paths, cf::map::normalise $_;
1637 }
1638
1639 \@paths
1640}
1641
1642package cf;
1643
1644=back
1645
1646=head3 cf::object
1647
1648=cut
1649
1650package cf::object;
1651
1652=over 4
1653
1654=item $ob->inv_recursive
1655
1656Returns the inventory of the object _and_ their inventories, recursively.
1657
1658=cut
1659
1660sub inv_recursive_;
1661sub inv_recursive_ {
1662 map { $_, inv_recursive_ $_->inv } @_
1663}
1664
1665sub inv_recursive {
1666 inv_recursive_ inv $_[0]
1667}
1668
1669package cf;
1670
1671=back
1672
1673=head3 cf::object::player
1674
1675=over 4
1676
1677=item $player_object->reply ($npc, $msg[, $flags])
1678
1679Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
1680can be C<undef>. Does the right thing when the player is currently in a
1681dialogue with the given NPC character.
1682
1683=cut
1684
1685# rough implementation of a future "reply" method that works
1686# with dialog boxes.
1687#TODO: the first argument must go, split into a $npc->reply_to ( method
1688sub cf::object::player::reply($$$;$) {
1689 my ($self, $npc, $msg, $flags) = @_;
1690
1691 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1692
1693 if ($self->{record_replies}) {
1694 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
1695 } else {
1696 $msg = $npc->name . " says: $msg" if $npc;
1697 $self->message ($msg, $flags);
1698 }
1699}
1700
1701=item $player_object->may ("access")
1702
1703Returns wether the given player is authorized to access resource "access"
1704(e.g. "command_wizcast").
1705
1706=cut
1707
1708sub cf::object::player::may {
1709 my ($self, $access) = @_;
1710
1711 $self->flag (cf::FLAG_WIZ) ||
1712 (ref $cf::CFG{"may_$access"}
1713 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1714 : $cf::CFG{"may_$access"})
1715}
1716
1717=item $player_object->enter_link
1718
1719Freezes the player and moves him/her to a special map (C<{link}>).
1720
1721The player should be reasonably safe there for short amounts of time. You
1722I<MUST> call C<leave_link> as soon as possible, though.
1723
1724Will never block.
1725
1726=item $player_object->leave_link ($map, $x, $y)
1727
1728Moves the player out of the special C<{link}> map onto the specified
1729map. If the map is not valid (or omitted), the player will be moved back
1730to the location he/she was before the call to C<enter_link>, or, if that
1731fails, to the emergency map position.
1732
1733Might block.
1734
1735=cut
1736
1737sub link_map {
1738 unless ($LINK_MAP) {
1739 $LINK_MAP = cf::map::find "{link}"
1740 or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
1741 $LINK_MAP->load;
1742 }
1743
1744 $LINK_MAP
1745}
1746
1747sub cf::object::player::enter_link {
1748 my ($self) = @_;
1749
1750 $self->deactivate_recursive;
1751
1752 return if UNIVERSAL::isa $self->map, "ext::map_link";
1753
1754 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1755 if $self->map;
1756
1757 $self->enter_map ($LINK_MAP || link_map, 10, 10);
1758}
1759
1760sub cf::object::player::leave_link {
1761 my ($self, $map, $x, $y) = @_;
1762
1763 my $link_pos = delete $self->{_link_pos};
1764
1765 unless ($map) {
1766 # restore original map position
1767 ($map, $x, $y) = @{ $link_pos || [] };
1768 $map = cf::map::find $map;
1769
1770 unless ($map) {
1771 ($map, $x, $y) = @$EMERGENCY_POSITION;
1772 $map = cf::map::find $map
1773 or die "FATAL: cannot load emergency map\n";
1774 }
1775 }
1776
1777 ($x, $y) = (-1, -1)
1778 unless (defined $x) && (defined $y);
1779
1780 # use -1 or undef as default coordinates, not 0, 0
1781 ($x, $y) = ($map->enter_x, $map->enter_y)
1782 if $x <=0 && $y <= 0;
1783
1784 $map->load;
1785 $map->load_diag;
1786
1787 return unless $self->contr->active;
1788 $self->activate_recursive;
1789 $self->enter_map ($map, $x, $y);
1790}
1791
1792cf::player->attach (
1793 on_logout => sub {
1794 my ($pl) = @_;
1795
1796 # abort map switching before logout
1797 if ($pl->ob->{_link_pos}) {
1798 cf::sync_job {
1799 $pl->ob->leave_link
1800 };
1801 }
1802 },
1803 on_login => sub {
1804 my ($pl) = @_;
1805
1806 # try to abort aborted map switching on player login :)
1807 # should happen only on crashes
1808 if ($pl->ob->{_link_pos}) {
1809 $pl->ob->enter_link;
1810 (async {
1811 # we need this sleep as the login has a concurrent enter_exit running
1812 # and this sleep increases chances of the player not ending up in scorn
1813 $pl->ob->reply (undef,
1814 "There was an internal problem at your last logout, "
1815 . "the server will try to bring you to your intended destination in a second.",
1816 cf::NDI_RED);
1817 Coro::Timer::sleep 1;
1818 $pl->ob->leave_link;
1819 })->prio (2);
1820 }
1821 },
1822);
1823
1824=item $player_object->goto ($path, $x, $y)
1825
1826=cut
1827
1828sub cf::object::player::goto {
1829 my ($self, $path, $x, $y) = @_;
1830
1831 $self->enter_link;
1832
1833 (async {
1834 my $map = eval {
1835 my $map = cf::map::find $path;
1836 $map = $map->customise_for ($self) if $map;
1837 $map
1838 } or
1839 $self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1840
1841 $self->leave_link ($map, $x, $y);
1842 })->prio (1);
1843}
1844
1845=item $player_object->enter_exit ($exit_object)
1846
1847=cut
1848
1849sub parse_random_map_params {
1850 my ($spec) = @_;
1851
1852 my $rmp = { # defaults
1853 xsize => (cf::rndm 15, 40),
1854 ysize => (cf::rndm 15, 40),
1855 symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
1856 #layout => string,
1857 };
1858
1859 for (split /\n/, $spec) {
1860 my ($k, $v) = split /\s+/, $_, 2;
1861
1862 $rmp->{lc $k} = $v if (length $k) && (length $v);
1863 }
1864
1865 $rmp
1866}
1867
1868sub prepare_random_map {
1869 my ($exit) = @_;
1870
1871 my $guard = cf::lock_acquire "exit_prepare:$exit";
1872
1873 # all this does is basically replace the /! path by
1874 # a new random map path (?random/...) with a seed
1875 # that depends on the exit object
1876
1877 my $rmp = parse_random_map_params $exit->msg;
1878
1879 if ($exit->map) {
1880 $rmp->{region} = $exit->region->name;
1881 $rmp->{origin_map} = $exit->map->path;
1882 $rmp->{origin_x} = $exit->x;
1883 $rmp->{origin_y} = $exit->y;
1884 }
1885
1886 $rmp->{random_seed} ||= $exit->random_seed;
1887
1888 my $data = cf::to_json $rmp;
1889 my $md5 = Digest::MD5::md5_hex $data;
1890 my $meta = "$cf::RANDOM_MAPS/$md5.meta";
1891
1892 if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1893 aio_write $fh, 0, (length $data), $data, 0;
1894 undef $fh;
1895 aio_rename "$meta~", $meta;
1896
1897 $exit->slaying ("?random/$md5");
1898 $exit->msg (undef);
1899 }
1900}
1901
1902sub cf::object::player::enter_exit {
1903 my ($self, $exit) = @_;
1904
1905 return unless $self->type == cf::PLAYER;
1906
1907 if ($exit->slaying eq "/!") {
1908 #TODO: this should de-fi-ni-te-ly not be a sync-job
1909 cf::sync_job { prepare_random_map $exit };
1910 }
1911
1912 my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
1913 my $hp = $exit->stats->hp;
1914 my $sp = $exit->stats->sp;
1915
1916 $self->enter_link;
1917
1918 (async {
1919 $self->deactivate_recursive; # just to be sure
1920 unless (eval {
1921 $self->goto ($slaying, $hp, $sp);
1922
1923 1;
1924 }) {
1925 $self->message ("Something went wrong deep within the crossfire server. "
1926 . "I'll try to bring you back to the map you were before. "
1927 . "Please report this to the dungeon master!",
1928 cf::NDI_UNIQUE | cf::NDI_RED);
1929
1930 warn "ERROR in enter_exit: $@";
1931 $self->leave_link;
1932 }
1933 })->prio (1);
1934}
1935
1936=head3 cf::client
1937
1938=over 4
1939
1940=item $client->send_drawinfo ($text, $flags)
1941
1942Sends a drawinfo packet to the client. Circumvents output buffering so
1943should not be used under normal circumstances.
1944
1945=cut
1946
1947sub cf::client::send_drawinfo {
1948 my ($self, $text, $flags) = @_;
1949
1950 utf8::encode $text;
1951 $self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
1952}
1953
1954
1955=item $success = $client->query ($flags, "text", \&cb)
1956
1957Queues a query to the client, calling the given callback with
1958the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
1959C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1960
1961Queries can fail, so check the return code. Or don't, as queries will become
1962reliable at some point in the future.
1963
1964=cut
1965
1966sub cf::client::query {
1967 my ($self, $flags, $text, $cb) = @_;
1968
1969 return unless $self->state == ST_PLAYING
1970 || $self->state == ST_SETUP
1971 || $self->state == ST_CUSTOM;
1972
1973 $self->state (ST_CUSTOM);
1974
1975 utf8::encode $text;
1976 push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1977
1978 $self->send_packet ($self->{query_queue}[0][0])
1979 if @{ $self->{query_queue} } == 1;
1980}
1981
1982cf::client->attach (
1983 on_reply => sub {
1984 my ($ns, $msg) = @_;
1985
1986 # this weird shuffling is so that direct followup queries
1987 # get handled first
1988 my $queue = delete $ns->{query_queue}
1989 or return; # be conservative, not sure how that can happen, but we saw a crash here
1990
1991 (shift @$queue)->[1]->($msg);
1992
1993 push @{ $ns->{query_queue} }, @$queue;
1994
1995 if (@{ $ns->{query_queue} } == @$queue) {
1996 if (@$queue) {
1997 $ns->send_packet ($ns->{query_queue}[0][0]);
1998 } else {
1999 $ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2000 }
2001 }
2002 },
2003);
2004
2005=item $client->async (\&cb)
2006
2007Create a new coroutine, running the specified callback. The coroutine will
2008be automatically cancelled when the client gets destroyed (e.g. on logout,
2009or loss of connection).
2010
2011=cut
2012
2013sub cf::client::async {
2014 my ($self, $cb) = @_;
2015
2016 my $coro = &Coro::async ($cb);
2017
2018 $coro->on_destroy (sub {
2019 delete $self->{_coro}{$coro+0};
2020 });
2021
2022 $self->{_coro}{$coro+0} = $coro;
2023
2024 $coro
2025}
2026
2027cf::client->attach (
2028 on_destroy => sub {
2029 my ($ns) = @_;
2030
2031 $_->cancel for values %{ (delete $ns->{_coro}) || {} };
2032 },
2033);
2034
2035=back
2036
2037
2038=head2 SAFE SCRIPTING
2039
2040Functions that provide a safe environment to compile and execute
2041snippets of perl code without them endangering the safety of the server
2042itself. Looping constructs, I/O operators and other built-in functionality
2043is not available in the safe scripting environment, and the number of
2044functions and methods that can be called is greatly reduced.
2045
2046=cut
2047
2048our $safe = new Safe "safe";
2049our $safe_hole = new Safe::Hole;
2050
2051$SIG{FPE} = 'IGNORE';
2052
2053$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
2054
2055# here we export the classes and methods available to script code
2056
2057=pod
2058
2059The following fucntions and emthods are available within a safe environment:
2060
2061 cf::object contr pay_amount pay_player map
2062 cf::object::player player
2063 cf::player peaceful
2064 cf::map trigger
2065
2066=cut
2067
2068for (
2069 ["cf::object" => qw(contr pay_amount pay_player map)],
2070 ["cf::object::player" => qw(player)],
2071 ["cf::player" => qw(peaceful)],
2072 ["cf::map" => qw(trigger)],
2073) {
2074 no strict 'refs';
2075 my ($pkg, @funs) = @$_;
2076 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
2077 for @funs;
2078}
2079
2080=over 4
2081
2082=item @retval = safe_eval $code, [var => value, ...]
2083
2084Compiled and executes the given perl code snippet. additional var/value
2085pairs result in temporary local (my) scalar variables of the given name
2086that are available in the code snippet. Example:
2087
2088 my $five = safe_eval '$first + $second', first => 1, second => 4;
2089
2090=cut
2091
2092sub safe_eval($;@) {
2093 my ($code, %vars) = @_;
2094
2095 my $qcode = $code;
2096 $qcode =~ s/"/‟/g; # not allowed in #line filenames
2097 $qcode =~ s/\n/\\n/g;
2098
2099 local $_;
2100 local @safe::cf::_safe_eval_args = values %vars;
2101
2102 my $eval =
2103 "do {\n"
2104 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
2105 . "#line 0 \"{$qcode}\"\n"
2106 . $code
2107 . "\n}"
2108 ;
2109
2110 sub_generation_inc;
2111 my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
2112 sub_generation_inc;
2113
2114 if ($@) {
2115 warn "$@";
2116 warn "while executing safe code '$code'\n";
2117 warn "with arguments " . (join " ", %vars) . "\n";
2118 }
2119
2120 wantarray ? @res : $res[0]
2121}
2122
2123=item cf::register_script_function $function => $cb
2124
2125Register a function that can be called from within map/npc scripts. The
2126function should be reasonably secure and should be put into a package name
2127like the extension.
2128
2129Example: register a function that gets called whenever a map script calls
2130C<rent::overview>, as used by the C<rent> extension.
2131
2132 cf::register_script_function "rent::overview" => sub {
2133 ...
2134 };
2135
2136=cut
2137
2138sub register_script_function {
2139 my ($fun, $cb) = @_;
2140
2141 no strict 'refs';
2142 *{"safe::$fun"} = $safe_hole->wrap ($cb);
2143}
2144
2145=back
2146
2147=cut
2148
2149#############################################################################
2150
2151=head2 EXTENSION DATABASE SUPPORT
2152
2153Crossfire maintains a very simple database for extension use. It can
2154currently store anything that can be serialised using Storable, which
2155excludes objects.
2156
2157The parameter C<$family> should best start with the name of the extension
2158using it, it should be unique.
2159
2160=over 4
2161
2162=item $hashref = cf::db_get $family
2163
2164Return a hashref for use by the extension C<$family>, which can be
2165modified. After modifications, you have to call C<cf::db_dirty> or
2166C<cf::db_sync>.
2167
2168=item $value = cf::db_get $family => $key
2169
2170Returns a single value from the database
2171
2172=item cf::db_put $family => $hashref
2173
2174Stores the given family hashref into the database. Updates are delayed, if
2175you want the data to be synced to disk immediately, use C<cf::db_sync>.
2176
2177=item cf::db_put $family => $key => $value
2178
2179Stores the given C<$value> in the family hash. Updates are delayed, if you
2180want the data to be synced to disk immediately, use C<cf::db_sync>.
2181
2182=item cf::db_dirty
2183
2184Marks the database as dirty, to be updated at a later time.
2185
2186=item cf::db_sync
2187
2188Immediately write the database to disk I<if it is dirty>.
2189
2190=cut
2191
2192our $DB;
2193
2194{
2195 my $path = cf::localdir . "/database.pst";
2196
2197 sub db_load() {
2198 $DB = stat $path ? Storable::retrieve $path : { };
2199 }
2200
2201 my $pid;
2202
2203 sub db_save() {
2204 waitpid $pid, 0 if $pid;
2205 if (0 == ($pid = fork)) {
2206 $DB->{_meta}{version} = 1;
2207 Storable::nstore $DB, "$path~";
2208 rename "$path~", $path;
2209 cf::_exit 0 if defined $pid;
2210 }
2211 }
2212
2213 my $dirty;
2214
2215 sub db_sync() {
2216 db_save if $dirty;
2217 undef $dirty;
2218 }
2219
2220 my $idle = Event->idle (
2221 reentrant => 0,
2222 min => 10,
2223 max => 20,
2224 repeat => 0,
2225 data => WF_AUTOCANCEL,
2226 cb => \&db_sync,
2227 );
2228
2229 sub db_dirty() {
2230 $dirty = 1;
2231 $idle->start;
2232 }
2233
2234 sub db_get($;$) {
2235 @_ >= 2
2236 ? $DB->{$_[0]}{$_[1]}
2237 : ($DB->{$_[0]} ||= { })
2238 }
2239
2240 sub db_put($$;$) {
2241 if (@_ >= 3) {
2242 $DB->{$_[0]}{$_[1]} = $_[2];
2243 } else {
2244 $DB->{$_[0]} = $_[1];
2245 }
2246 db_dirty;
2247 }
2248
2249 cf::global->attach (
2250 prio => 10000,
2251 on_cleanup => sub {
2252 db_sync;
2253 },
2254 );
2255}
2256
2257#############################################################################
2258# the server's main()
2259
2260sub cfg_load {
2261 open my $fh, "<:utf8", cf::confdir . "/config"
2262 or return;
2263
2264 local $/;
2265 *CFG = YAML::Syck::Load <$fh>;
2266
2267 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2268
2269 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2270 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
2271
2272 if (exists $CFG{mlockall}) {
224 eval { 2273 eval {
225 $_->cancel for Event::all_watchers; 2274 $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
226 2275 and die "WARNING: m(un)lockall failed: $!\n";
227 unload_extension $_ for @exts;
228 delete $INC{"cf.pm"};
229
230 # don't, removes xs symbols, too
231 #Symbol::delete_package __PACKAGE__;
232
233 require cf;
234 }; 2276 };
235 warn $@ if $@; 2277 warn $@ if $@;
236 $who->message ($@) if $@; 2278 }
237 warn "reloaded\n"; 2279}
238 2280
239 $who->message ("reloaded"); 2281sub main {
240 } else { 2282 # we must not ever block the main coroutine
241 $who->message ("Intruder Alert!"); 2283 local $Coro::idle = sub {
2284 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2285 (async {
2286 Event::one_event;
2287 })->prio (Coro::PRIO_MAX);
242 } 2288 };
2289
2290 cfg_load;
2291 db_load;
2292 load_extensions;
2293
2294 $TICK_WATCHER->start;
2295 Event::loop;
2296}
2297
2298#############################################################################
2299# initialisation and cleanup
2300
2301# install some emergency cleanup handlers
2302BEGIN {
2303 for my $signal (qw(INT HUP TERM)) {
2304 Event->signal (
2305 reentrant => 0,
2306 data => WF_AUTOCANCEL,
2307 signal => $signal,
2308 prio => 0,
2309 cb => sub {
2310 cf::cleanup "SIG$signal";
2311 },
2312 );
2313 }
2314}
2315
2316sub emergency_save() {
2317 my $freeze_guard = cf::freeze_mainloop;
2318
2319 warn "enter emergency perl save\n";
2320
2321 cf::sync_job {
2322 # use a peculiar iteration method to avoid tripping on perl
2323 # refcount bugs in for. also avoids problems with players
2324 # and maps saved/destroyed asynchronously.
2325 warn "begin emergency player save\n";
2326 for my $login (keys %cf::PLAYER) {
2327 my $pl = $cf::PLAYER{$login} or next;
2328 $pl->valid or next;
2329 $pl->save;
2330 }
2331 warn "end emergency player save\n";
2332
2333 warn "begin emergency map save\n";
2334 for my $path (keys %cf::MAP) {
2335 my $map = $cf::MAP{$path} or next;
2336 $map->valid or next;
2337 $map->save;
2338 }
2339 warn "end emergency map save\n";
2340 };
2341
2342 warn "leave emergency perl save\n";
2343}
2344
2345sub reload() {
2346 # can/must only be called in main
2347 if ($Coro::current != $Coro::main) {
2348 warn "can only reload from main coroutine";
2349 return;
2350 }
2351
2352 warn "reloading...";
2353
2354 warn "cancelling server ticker";
2355 $TICK_WATCHER->cancel;
2356
2357 cf::emergency_save;
2358
2359 eval {
2360 # if anything goes wrong in here, we should simply crash as we already saved
2361
2362 warn "syncing database to disk";
2363 cf::db_sync;
2364
2365 warn "cancelling all WF_AUTOCANCEL watchers";
2366 for (Event::all_watchers) {
2367 $_->cancel if $_->data & WF_AUTOCANCEL;
2368 }
2369
2370 warn "flushing outstanding aio requests";
2371 for (;;) {
2372 IO::AIO::flush;
2373 Coro::cede;
2374 last unless IO::AIO::nreqs;
2375 warn "iterate...";
2376 }
2377
2378 warn "cancelling all extension coros";
2379 $_->cancel for values %EXT_CORO;
2380 %EXT_CORO = ();
2381
2382 warn "removing commands";
2383 %COMMAND = ();
2384
2385 warn "removing ext commands";
2386 %EXTCMD = ();
2387
2388 warn "unloading/nuking all extensions";
2389 for my $pkg (@EXTS) {
2390 warn "... unloading $pkg";
2391
2392 if (my $cb = $pkg->can ("unload")) {
2393 eval {
2394 $cb->($pkg);
2395 1
2396 } or warn "$pkg unloaded, but with errors: $@";
2397 }
2398
2399 warn "... nuking $pkg";
2400 Symbol::delete_package $pkg;
2401 }
2402
2403 warn "unloading all perl modules loaded from $LIBDIR";
2404 while (my ($k, $v) = each %INC) {
2405 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
2406
2407 warn "... unloading $k";
2408 delete $INC{$k};
2409
2410 $k =~ s/\.pm$//;
2411 $k =~ s/\//::/g;
2412
2413 if (my $cb = $k->can ("unload_module")) {
2414 $cb->();
2415 }
2416
2417 Symbol::delete_package $k;
2418 }
2419
2420 warn "getting rid of safe::, as good as possible";
2421 Symbol::delete_package "safe::$_"
2422 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2423
2424 warn "unloading cf.pm \"a bit\"";
2425 delete $INC{"cf.pm"};
2426
2427 # don't, removes xs symbols, too,
2428 # and global variables created in xs
2429 #Symbol::delete_package __PACKAGE__;
2430
2431 warn "unload completed, starting to reload now";
2432
2433 warn "reloading cf.pm";
2434 require cf;
2435 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2436
2437 warn "loading config and database again";
2438 cf::cfg_load;
2439 cf::db_load;
2440
2441 warn "loading extensions";
2442 cf::load_extensions;
2443
2444 warn "reattaching attachments to objects/players";
2445 _global_reattach;
2446 warn "reattaching attachments to maps";
2447 reattach $_ for values %MAP;
2448
2449 warn "restarting server ticker";
2450
2451 $TICK_WATCHER->start;
2452 };
2453
2454 if ($@) {
2455 warn $@;
2456 warn "error while reloading, exiting.";
2457 exit 1;
2458 }
2459
2460 warn "reloaded";
243}; 2461};
244 2462
245############################################################################# 2463our $RELOAD_WATCHER; # used only during reload
246# extcmd framework, basically convert ext <id> <pkg> arg1 args
247# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
248 2464
249sub on_extcmd { 2465register_command "reload" => sub {
250 my ($pl, $buf) = @_; 2466 my ($who, $arg) = @_;
251 2467
252 my ($type) = $buf =~ s/^(\S+) // ? $1 : ""; 2468 if ($who->flag (FLAG_WIZ)) {
2469 $who->message ("reloading server.");
253 2470
254 $extcmd{$type}[0]->($pl, $buf) 2471 # doing reload synchronously and two reloads happen back-to-back,
255 if $extcmd{$type}; 2472 # coro crashes during coro_state_free->destroy here.
256}
257 2473
258############################################################################# 2474 $RELOAD_WATCHER ||= Event->timer (
259# load/save/clean perl data associated with a map 2475 reentrant => 0,
260 2476 after => 0,
261*on_mapclean = sub { 2477 data => WF_AUTOCANCEL,
262 my ($map) = @_; 2478 cb => sub {
263 2479 reload;
264 my $path = $map->tmpname; 2480 undef $RELOAD_WATCHER;
265 defined $path or return; 2481 },
266 2482 );
267 unlink "$path.cfperl"; 2483 }
268}; 2484};
269 2485
270*on_mapin = 2486unshift @INC, $LIBDIR;
271*on_mapload = sub {
272 my ($map) = @_;
273 2487
274 my $path = $map->tmpname; 2488my $bug_warning = 0;
275 $path = $map->path unless defined $path;
276 2489
277 open my $fh, "<:raw", "$path.cfperl" 2490$TICK_WATCHER = Event->timer (
278 or return; # no perl data 2491 reentrant => 0,
279 2492 parked => 1,
280 my $data = Storable::thaw do { local $/; <$fh> }; 2493 prio => 0,
281 2494 at => $NEXT_TICK || $TICK,
282 $data->{version} <= 1 2495 data => WF_AUTOCANCEL,
283 or return; # too new 2496 cb => sub {
284 2497 if ($Coro::current != $Coro::main) {
285 $map->_set_obs ($data->{obs}); 2498 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
286}; 2499 unless ++$bug_warning > 10;
287 2500 return;
288*on_mapout = sub {
289 my ($map) = @_;
290
291 my $path = $map->tmpname;
292 $path = $map->path unless defined $path;
293
294 my $obs = $map->_get_obs;
295
296 if (defined $obs) {
297 open my $fh, ">:raw", "$path.cfperl"
298 or die "$path.cfperl: $!";
299
300 stat $path;
301
302 print $fh Storable::nfreeze {
303 size => (stat _)[7],
304 time => (stat _)[9],
305 version => 1,
306 obs => $obs,
307 }; 2501 }
308 2502
309 chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g* 2503 $NOW = Event::time;
310 } else {
311 unlink "$path.cfperl";
312 }
313};
314 2504
315############################################################################# 2505 cf::server_tick; # one server iteration
316# load/save perl data associated with player->ob objects 2506 $RUNTIME += $TICK;
2507 $NEXT_TICK += $TICK;
317 2508
318*on_player_load = sub { 2509 $WAIT_FOR_TICK->broadcast;
319 my ($ob, $path) = @_; 2510 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
320 2511
321 if (open my $fh, "<:raw", "$path.cfperl") { 2512 Event::sweep;
322 2513 Coro::cede_notself;
323 #d##TODO#remove
324
325 my $data = Storable::thaw do { local $/; <$fh> };
326
327 $data->{version} <= 1
328 or return; # too new
329
330 %$ob = %{$data->{ob}};
331 return;
332 }
333
334 for my $o ($ob, $ob->inv) {
335 if (my $value = $o->get_ob_key_value ("_perl_data")) {
336 $o->set_ob_key_value ("_perl_data");
337
338 %$o = %{ Storable::thaw pack "H*", $value };
339 } 2514
2515# my $AFTER = Event::time;
2516# warn $AFTER - $NOW;#d#
2517
2518 # if we are delayed by four ticks or more, skip them all
2519 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
2520
2521 $TICK_WATCHER->at ($NEXT_TICK);
2522 $TICK_WATCHER->start;
340 } 2523 },
341}; 2524);
342 2525
343*on_player_save = sub { 2526IO::AIO::max_poll_time $TICK * 0.1;
344 my ($ob, $path) = @_;
345 2527
346 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_) 2528undef $Coro::AIO::WATCHER;
347 for grep %$_, $ob, $ob->inv; 2529$AIO_POLL_WATCHER = Event->io (
2530 reentrant => 0,
2531 fd => IO::AIO::poll_fileno,
2532 poll => 'r',
2533 prio => 6,
2534 data => WF_AUTOCANCEL,
2535 cb => \&IO::AIO::poll_cb,
2536);
348 2537
349 unlink "$path.cfperl";#d##TODO#remove 2538$WRITE_RUNTIME_WATCHER = Event->timer (
350}; 2539 reentrant => 0,
2540 data => WF_AUTOCANCEL,
2541 after => 1,
2542 interval => 10,
2543 prio => 6, # keep it lowest so it acts like a watchdog
2544 cb => Coro::unblock_sub {
2545 write_runtime
2546 or warn "ERROR: unable to write runtime file: $!";
2547 },
2548);
351 2549
352register "<global>", __PACKAGE__; 2550END { cf::emergency_save }
353
354unshift @INC, maps_directory "perl";
355
356load_extensions;
357 2551
3581 25521
359 2553

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