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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.46 by root, Sun Aug 27 16:15:12 2006 UTC vs.
Revision 1.94 by root, Thu Dec 21 23:02:54 2006 UTC

5use Storable; 5use Storable;
6use Opcode; 6use Opcode;
7use Safe; 7use Safe;
8use Safe::Hole; 8use Safe::Hole;
9 9
10use IO::AIO ();
11use YAML::Syck ();
10use Time::HiRes; 12use Time::HiRes;
11use Event; 13use Event;
12$Event::Eval = 1; # no idea why this is required, but it is 14$Event::Eval = 1; # no idea why this is required, but it is
13 15
16# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17$YAML::Syck::ImplicitUnicode = 1;
18
14use strict; 19use strict;
15 20
21sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22
16our %COMMAND = (); 23our %COMMAND = ();
24our %COMMAND_TIME = ();
25our %EXTCMD = ();
26
27_init_vars;
28
17our @EVENT; 29our @EVENT;
18our %PROP_TYPE; 30our $LIBDIR = datadir . "/ext";
19our %PROP_IDX;
20our $LIBDIR = maps_directory "perl";
21 31
22our $TICK = MAX_TIME * 1e-6; 32our $TICK = MAX_TIME * 1e-6;
23our $TICK_WATCHER; 33our $TICK_WATCHER;
24our $NEXT_TICK; 34our $NEXT_TICK;
35
36our %CFG;
37
38our $UPTIME; $UPTIME ||= time;
39
40#############################################################################
41
42=head2 GLOBAL VARIABLES
43
44=over 4
45
46=item $cf::UPTIME
47
48The timestamp of the server start (so not actually an uptime).
49
50=item $cf::LIBDIR
51
52The perl library directory, where extensions and cf-specific modules can
53be found. It will be added to C<@INC> automatically.
54
55=item $cf::TICK
56
57The interval between server ticks, in seconds.
58
59=item %cf::CFG
60
61Configuration for the server, loaded from C</etc/crossfire/config>, or
62from wherever your confdir points to.
63
64=back
65
66=cut
25 67
26BEGIN { 68BEGIN {
27 *CORE::GLOBAL::warn = sub { 69 *CORE::GLOBAL::warn = sub {
28 my $msg = join "", @_; 70 my $msg = join "", @_;
29 $msg .= "\n" 71 $msg .= "\n"
32 print STDERR "cfperl: $msg"; 74 print STDERR "cfperl: $msg";
33 LOG llevError, "cfperl: $msg"; 75 LOG llevError, "cfperl: $msg";
34 }; 76 };
35} 77}
36 78
37my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply! 79@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38 80@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39# generate property mutators 81@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40sub prop_gen { 82@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41 my ($prefix, $class) = @_; 83@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43 no strict 'refs';
44
45 for my $prop (keys %PROP_TYPE) {
46 $prop =~ /^\Q$prefix\E_(.*$)/ or next;
47 my $sub = lc $1;
48
49 my $type = $PROP_TYPE{$prop};
50 my $idx = $PROP_IDX {$prop};
51
52 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53 $_[0]->get_property ($type, $idx)
54 };
55
56 *{"$class\::set_$sub"} = sub {
57 $_[0]->set_property ($type, $idx, $_[1]);
58 } unless $ignore_set{$prop};
59 }
60}
61
62# auto-generate most of the API
63
64prop_gen OBJECT_PROP => "cf::object";
65# CFAPI_OBJECT_ANIMATION?
66prop_gen PLAYER_PROP => "cf::object::player";
67
68prop_gen MAP_PROP => "cf::map";
69prop_gen ARCH_PROP => "cf::arch";
70
71@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; 84@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72 85
73# we bless all objects into (empty) derived classes to force a method lookup 86# we bless all objects into (empty) derived classes to force a method lookup
74# within the Safe compartment. 87# within the Safe compartment.
75for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) { 88for my $pkg (qw(
89 cf::global
90 cf::object cf::object::player
91 cf::client cf::player
92 cf::arch cf::living
93 cf::map cf::party cf::region
94)) {
76 no strict 'refs'; 95 no strict 'refs';
77 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg; 96 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78} 97}
79 98
80$Event::DIED = sub { 99$Event::DIED = sub {
82}; 101};
83 102
84my %ext_pkg; 103my %ext_pkg;
85my @exts; 104my @exts;
86my @hook; 105my @hook;
87my %command;
88my %extcmd;
89 106
90############################################################################# 107=head2 UTILITY FUNCTIONS
91# utility functions 108
109=over 4
110
111=cut
92 112
93use JSON::Syck (); # TODO# replace by JSON::PC once working 113use JSON::Syck (); # TODO# replace by JSON::PC once working
114
115=item $ref = cf::from_json $json
116
117Converts a JSON string into the corresponding perl data structure.
118
119=cut
94 120
95sub from_json($) { 121sub from_json($) {
96 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs 122 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97 JSON::Syck::Load $_[0] 123 JSON::Syck::Load $_[0]
98} 124}
99 125
126=item $json = cf::to_json $ref
127
128Converts a perl data structure into its JSON representation.
129
130=cut
131
100sub to_json($) { 132sub to_json($) {
101 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 133 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102 JSON::Syck::Dump $_[0] 134 JSON::Syck::Dump $_[0]
103} 135}
104 136
137=back
138
139=cut
140
105############################################################################# 141#############################################################################
106# "new" plug-in system
107 142
108=item $object->attach ($attachment, ...) 143=head2 ATTACHABLE OBJECTS
109 144
110Attach a pre-registered attachment to an object. 145Many objects in crossfire are so-called attachable objects. That means you can
146attach callbacks/event handlers (a collection of which is called an "attachment")
147to it. All such attachable objects support the following methods.
111 148
112=item $player->attach ($attachment, ...) 149In the following description, CLASS can be any of C<global>, C<object>
150C<player>, C<client> or C<map> (i.e. the attachable objects in
151crossfire+).
113 152
114Attach a pre-registered attachment to a player. 153=over 4
115 154
116=item $map->attach ($attachment, ...) # not yet persistent 155=item $attachable->attach ($attachment, key => $value...)
117 156
118Attach a pre-registered attachment to a map. 157=item $attachable->detach ($attachment)
119 158
120=item cf::attach_global ... 159Attach/detach a pre-registered attachment to a specific object and give it
160the specified key/value pairs as arguments.
121 161
122Attach handlers for global events. 162Example, attach a minesweeper attachment to the given object, making it a
16310x10 minesweeper game:
123 164
124This and all following C<attach_*>-functions expect any number of the 165 $obj->attach (minesweeper => width => 10, height => 10);
125following handler/hook descriptions: 166
167=item $bool = $attachable->attached ($name)
168
169Checks wether the named attachment is currently attached to the object.
170
171=item cf::CLASS->attach ...
172
173=item cf::CLASS->detach ...
174
175Define an anonymous attachment and attach it to all objects of the given
176CLASS. See the next function for an explanation of its arguments.
177
178You can attach to global events by using the C<cf::global> class.
179
180Example, log all player logins:
181
182 cf::player->attach (
183 on_login => sub {
184 my ($pl) = @_;
185 ...
186 },
187 );
188
189Example, attach to the jeweler skill:
190
191 cf::object->attach (
192 type => cf::SKILL,
193 subtype => cf::SK_JEWELER,
194 on_use_skill => sub {
195 my ($sk, $ob, $part, $dir, $msg) = @_;
196 ...
197 },
198 );
199
200=item cf::CLASS::attachment $name, ...
201
202Register an attachment by C<$name> through which attachable objects of the
203given CLASS can refer to this attachment.
204
205Some classes such as crossfire maps and objects can specify attachments
206that are attached at load/instantiate time, thus the need for a name.
207
208These calls expect any number of the following handler/hook descriptions:
126 209
127=over 4 210=over 4
128 211
129=item prio => $number 212=item prio => $number
130 213
132by another C<prio> setting). Lower priority handlers get executed 215by another C<prio> setting). Lower priority handlers get executed
133earlier. The default priority is C<0>, and many built-in handlers are 216earlier. The default priority is C<0>, and many built-in handlers are
134registered at priority C<-1000>, so lower priorities should not be used 217registered at priority C<-1000>, so lower priorities should not be used
135unless you know what you are doing. 218unless you know what you are doing.
136 219
220=item type => $type
221
222(Only for C<< cf::object->attach >> calls), limits the attachment to the
223given type of objects only (the additional parameter C<subtype> can be
224used to further limit to the given subtype).
225
137=item on_I<event> => \&cb 226=item on_I<event> => \&cb
138 227
139Call the given code reference whenever the named event happens (event is 228Call the given code reference whenever the named event happens (event is
140something like C<instantiate>, C<apply>, C<use_skill> and so on, and which 229something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
141handlers are recognised generally depends on the type of object these 230handlers are recognised generally depends on the type of object these
150package and register them. Only handlers for eevents supported by the 239package and register them. Only handlers for eevents supported by the
151object/class are recognised. 240object/class are recognised.
152 241
153=back 242=back
154 243
155=item cf::attach_to_type $object_type, ... 244Example, define an attachment called "sockpuppet" that calls the given
245event handler when a monster attacks:
156 246
157Attach handlers for a specific object type (e.g. TRANSPORT). 247 cf::object::attachment sockpuppet =>
158 248 on_skill_attack => sub {
159=item cf::attach_to_objects ... 249 my ($self, $victim) = @_;
160 250 ...
161Attach handlers to all objects. Do not use this except for debugging or 251 }
162very rare events, as handlers are (obviously) called for I<all> objects in 252 }
163the game.
164
165=item cf::attach_to_players ...
166
167Attach handlers to all players.
168
169=item cf::attach_to_maps ...
170
171Attach handlers to all maps.
172
173=item cf:register_attachment $name, ...
174 253
175=cut 254=cut
176 255
177# the following variables are defined in .xs and must not be re-created 256# the following variables are defined in .xs and must not be re-created
178our @CB_GLOBAL = (); # registry for all global events 257our @CB_GLOBAL = (); # registry for all global events
179our @CB_OBJECT = (); # all objects (should not be used except in emergency) 258our @CB_OBJECT = (); # all objects (should not be used except in emergency)
180our @CB_PLAYER = (); 259our @CB_PLAYER = ();
260our @CB_CLIENT = ();
181our @CB_TYPE = (); # registry for type (cf-object class) based events 261our @CB_TYPE = (); # registry for type (cf-object class) based events
182our @CB_MAP = (); 262our @CB_MAP = ();
183 263
184my %attachment; 264my %attachment;
185 265
186sub _attach_cb($\%$$$) { 266sub _attach_cb($$$$) {
187 my ($registry, $undo, $event, $prio, $cb) = @_; 267 my ($registry, $event, $prio, $cb) = @_;
188 268
189 use sort 'stable'; 269 use sort 'stable';
190 270
191 $cb = [$prio, $cb]; 271 $cb = [$prio, $cb];
192 272
193 @{$registry->[$event]} = sort 273 @{$registry->[$event]} = sort
194 { $a->[0] cmp $b->[0] } 274 { $a->[0] cmp $b->[0] }
195 @{$registry->[$event] || []}, $cb; 275 @{$registry->[$event] || []}, $cb;
196
197 push @{$undo->{cb}}, [$event, $cb];
198} 276}
199 277
200# attach handles attaching event callbacks 278# attach handles attaching event callbacks
201# the only thing the caller has to do is pass the correct 279# the only thing the caller has to do is pass the correct
202# registry (== where the callback attaches to). 280# registry (== where the callback attaches to).
203sub _attach(\@$@) { 281sub _attach {
204 my ($registry, $klass, @arg) = @_; 282 my ($registry, $klass, @arg) = @_;
205 283
284 my $object_type;
206 my $prio = 0; 285 my $prio = 0;
207
208 my %undo = (
209 registry => $registry,
210 cb => [],
211 );
212
213 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT; 286 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
214 287
215 while (@arg) { 288 while (@arg) {
216 my $type = shift @arg; 289 my $type = shift @arg;
217 290
218 if ($type eq "prio") { 291 if ($type eq "prio") {
219 $prio = shift @arg; 292 $prio = shift @arg;
220 293
294 } elsif ($type eq "type") {
295 $object_type = shift @arg;
296 $registry = $CB_TYPE[$object_type] ||= [];
297
298 } elsif ($type eq "subtype") {
299 defined $object_type or Carp::croak "subtype specified without type";
300 my $object_subtype = shift @arg;
301 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
302
221 } elsif ($type eq "package") { 303 } elsif ($type eq "package") {
222 my $pkg = shift @arg; 304 my $pkg = shift @arg;
223 305
224 while (my ($name, $id) = each %cb_id) { 306 while (my ($name, $id) = each %cb_id) {
225 if (my $cb = $pkg->can ($name)) { 307 if (my $cb = $pkg->can ($name)) {
226 _attach_cb $registry, %undo, $id, $prio, $cb; 308 _attach_cb $registry, $id, $prio, $cb;
227 } 309 }
228 } 310 }
229 311
230 } elsif (exists $cb_id{$type}) { 312 } elsif (exists $cb_id{$type}) {
231 _attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg; 313 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
232 314
233 } elsif (ref $type) { 315 } elsif (ref $type) {
234 warn "attaching objects not supported, ignoring.\n"; 316 warn "attaching objects not supported, ignoring.\n";
235 317
236 } else { 318 } else {
237 shift @arg; 319 shift @arg;
238 warn "attach argument '$type' not supported, ignoring.\n"; 320 warn "attach argument '$type' not supported, ignoring.\n";
239 } 321 }
240 } 322 }
241
242 \%undo
243} 323}
244 324
245sub _attach_attachment { 325sub _object_attach {
246 my ($klass, $obj, $name, @args) = q_; 326 my ($obj, $name, %arg) = @_;
247 327
248 my $res; 328 return if exists $obj->{_attachment}{$name};
249 329
250 if (my $attach = $attachment{$name}) { 330 if (my $attach = $attachment{$name}) {
251 my $registry = $obj->registry; 331 my $registry = $obj->registry;
252 332
333 for (@$attach) {
334 my ($klass, @attach) = @$_;
253 $res = _attach @$registry, $klass, @$attach; 335 _attach $registry, $klass, @attach;
254
255 if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
256 for (@$cb) {
257 eval { $_->[1]->($obj, @args); };
258 if ($@) {
259 warn "$@";
260 warn "... while processing '$name' instantiate with args <@args>.\n";
261 }
262 } 336 }
263 } 337
338 $obj->{$name} = \%arg;
264 } else { 339 } else {
265 warn "object uses attachment '$name' that is not available, postponing.\n"; 340 warn "object uses attachment '$name' that is not available, postponing.\n";
266 } 341 }
267 342
268 push @{$obj->{_attachment}}, $name; 343 $obj->{_attachment}{$name} = undef;
269
270 $res->{attachment} = $name;
271 $res
272} 344}
273 345
274sub cf::object::attach { 346sub cf::attachable::attach {
347 if (ref $_[0]) {
348 _object_attach @_;
349 } else {
350 _attach shift->_attach_registry, @_;
351 }
352};
353
354# all those should be optimised
355sub cf::attachable::detach {
275 my ($obj, $name, @args) = @_; 356 my ($obj, $name) = @_;
276 357
277 _attach_attachment KLASS_OBJECT, $obj, $name, @args; 358 if (ref $obj) {
278} 359 delete $obj->{_attachment}{$name};
360 reattach ($obj);
361 } else {
362 Carp::croak "cannot, currently, detach class attachments";
363 }
364};
279 365
280sub cf::player::attach { 366sub cf::attachable::attached {
281 my ($obj, $name, @args) = @_; 367 my ($obj, $name) = @_;
282 368
283 _attach_attachment KLASS_PLAYER, $obj, $name, @args; 369 exists $obj->{_attachment}{$name}
284} 370}
285 371
286sub cf::map::attach { 372for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
287 my ($obj, $name, @args) = @_; 373 eval "#line " . __LINE__ . " 'cf.pm'
374 sub cf::\L$klass\E::_attach_registry {
375 (\\\@CB_$klass, KLASS_$klass)
376 }
288 377
289 _attach_attachment KLASS_MAP, $obj, $name, @args; 378 sub cf::\L$klass\E::attachment {
290}
291
292sub attach_global {
293 _attach @CB_GLOBAL, KLASS_GLOBAL, @_
294}
295
296sub attach_to_type {
297 my $type = shift;
298
299 _attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
300}
301
302sub attach_to_objects {
303 _attach @CB_OBJECT, KLASS_OBJECT, @_
304}
305
306sub attach_to_players {
307 _attach @CB_PLAYER, KLASS_PLAYER, @_
308}
309
310sub attach_to_maps {
311 _attach @CB_MAP, KLASS_MAP, @_
312}
313
314sub register_attachment {
315 my $name = shift; 379 my \$name = shift;
316 380
317 $attachment{$name} = [@_]; 381 \$attachment{\$name} = [[KLASS_$klass, \@_]];
382 }
383 ";
384 die if $@;
318} 385}
319 386
320our $override; 387our $override;
321our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals? 388our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322 389
336 for (@$callbacks) { 403 for (@$callbacks) {
337 eval { &{$_->[1]} }; 404 eval { &{$_->[1]} };
338 405
339 if ($@) { 406 if ($@) {
340 warn "$@"; 407 warn "$@";
341 warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n"; 408 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342 override; 409 override;
343 } 410 }
344 411
345 return 1 if $override; 412 return 1 if $override;
346 } 413 }
347 414
348 0 415 0
349} 416}
417
418=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
419
420=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
425
426=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428Generate a global/object/player/map-specific event with the given arguments.
429
430This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431removed in future versions), and there is no public API to access override
432results (if you must, access C<@cf::invoke_results> directly).
433
434=back
435
436=cut
437
438#############################################################################
439
440=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442Attachable objects includes objects, players, clients and maps.
443
444=over 4
445
446=item $object->valid
447
448Just because you have a perl object does not mean that the corresponding
449C-level object still exists. If you try to access an object that has no
450valid C counterpart anymore you get an exception at runtime. This method
451can be used to test for existence of the C object part without causing an
452exception.
453
454=back
455
456=cut
350 457
351############################################################################# 458#############################################################################
352# object support 459# object support
353 460
354sub instantiate { 461sub instantiate {
356 463
357 $data = from_json $data; 464 $data = from_json $data;
358 465
359 for (@$data) { 466 for (@$data) {
360 my ($name, $args) = @$_; 467 my ($name, $args) = @$_;
361 attach $obj, $name, @{$args || [] }; 468
469 $obj->attach ($name, %{$args || {} });
362 } 470 }
363} 471}
364 472
365# basically do the same as instantiate, without calling instantiate 473# basically do the same as instantiate, without calling instantiate
366sub reattach { 474sub reattach {
367 warn "reattach<@_>\n";#d#
368 my ($obj) = @_; 475 my ($obj) = @_;
369 my $registry = $obj->registry; 476 my $registry = $obj->registry;
370 477
478 @$registry = ();
479
480 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
481
371 for my $name (@{ $obj->{_attachment} }) { 482 for my $name (keys %{ $obj->{_attachment} || {} }) {
372 if (my $attach = $attachment{$name}) { 483 if (my $attach = $attachment{$name}) {
484 for (@$attach) {
485 my ($klass, @attach) = @$_;
373 _attach @$registry, KLASS_OBJECT, @$attach; 486 _attach $registry, $klass, @attach;
487 }
374 } else { 488 } else {
375 warn "object uses attachment '$name' that is not available, postponing.\n"; 489 warn "object uses attachment '$name' that is not available, postponing.\n";
376 } 490 }
377 } 491 }
378
379 warn "reattach<@_, $_>\n";
380} 492}
381 493
382sub object_freezer_save { 494sub object_freezer_save {
383 my ($filename, $objs) = @_; 495 my ($filename, $rdata, $objs) = @_;
384 warn "freeze $filename\n";#d#
385 use Data::Dumper; print Dumper $objs;
386 496
387 $filename .= ".pst"; 497 if (length $$rdata) {
498 warn sprintf "saving %s (%d,%d)\n",
499 $filename, length $$rdata, scalar @$objs;
388 500
389 if (@$objs) {
390 open my $fh, ">:raw", "$filename~"; 501 if (open my $fh, ">:raw", "$filename~") {
391 chmod $fh, SAVE_MODE; 502 chmod SAVE_MODE, $fh;
503 syswrite $fh, $$rdata;
504 close $fh;
505
506 if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507 chmod SAVE_MODE, $fh;
392 syswrite $fh, Storable::nfreeze { version => 1, objs => $objs }; 508 syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393 close $fh; 509 close $fh;
510 rename "$filename.pst~", "$filename.pst";
511 } else {
512 unlink "$filename.pst";
513 }
514
394 rename "$filename~", $filename; 515 rename "$filename~", $filename;
516 } else {
517 warn "FATAL: $filename~: $!\n";
518 }
395 } else { 519 } else {
396 unlink $filename; 520 unlink $filename;
521 unlink "$filename.pst";
397 } 522 }
523}
524
525sub object_freezer_as_string {
526 my ($rdata, $objs) = @_;
527
528 use Data::Dumper;
529
530 $$rdata . Dumper $objs
398} 531}
399 532
400sub object_thawer_load { 533sub object_thawer_load {
401 my ($filename) = @_; 534 my ($filename) = @_;
402 535
403 warn "thaw $filename\n";#d# 536 local $/;
404 537
538 my $av;
539
540 #TODO: use sysread etc.
541 if (open my $data, "<:raw:perlio", $filename) {
542 $data = <$data>;
405 open my $fh, "<:raw:perlio", "$filename.pst" 543 if (open my $pst, "<:raw:perlio", "$filename.pst") {
406 or return; 544 $av = eval { (Storable::thaw <$pst>)->{objs} };
545 }
546 return ($data, $av);
547 }
407 548
408 eval { local $/; (Storable::thaw <$fh>)->{objs} } 549 ()
409} 550}
410 551
411attach_to_objects 552cf::object->attach (
412 prio => -1000000, 553 prio => -1000000,
413 on_clone => sub { 554 on_clone => sub {
414 my ($src, $dst) = @_; 555 my ($src, $dst) = @_;
415 556
416 @{$dst->registry} = @{$src->registry}; 557 @{$dst->registry} = @{$src->registry};
417 warn "registry clone ", join ":", @{$src->registry};#d#
418 558
419 %$dst = %$src; 559 %$dst = %$src;
420 560
421 $dst->{_attachment} = [@{ $src->{_attachment} }] 561 %{$dst->{_attachment}} = %{$src->{_attachment}}
422 if exists $src->{_attachment}; 562 if exists $src->{_attachment};
423
424 warn "clone<@_>\n";#d#
425 }, 563 },
426; 564);
427 565
428############################################################################# 566#############################################################################
429# old plug-in events 567# command handling &c
430 568
431sub inject_event { 569=item cf::register_command $name => \&callback($ob,$args);
432 my $extension = shift;
433 my $event_code = shift;
434 570
435 my $cb = $hook[$event_code]{$extension} 571Register a callback for execution when the client sends the user command
436 or return; 572$name.
437 573
438 &$cb 574=cut
439}
440
441sub inject_global_event {
442 my $event = shift;
443
444 my $cb = $hook[$event]
445 or return;
446
447 List::Util::max map &$_, values %$cb
448}
449
450sub inject_command {
451 my ($name, $obj, $params) = @_;
452
453 for my $cmd (@{ $command{$name} }) {
454 $cmd->[1]->($obj, $params);
455 }
456
457 -1
458}
459 575
460sub register_command { 576sub register_command {
461 my ($name, $time, $cb) = @_; 577 my ($name, $cb) = @_;
462 578
463 my $caller = caller; 579 my $caller = caller;
464 #warn "registering command '$name/$time' to '$caller'"; 580 #warn "registering command '$name/$time' to '$caller'";
465 581
466 push @{ $command{$name} }, [$time, $cb, $caller]; 582 push @{ $COMMAND{$name} }, [$caller, $cb];
467 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
468} 583}
584
585=item cf::register_extcmd $name => \&callback($pl,$packet);
586
587Register a callbackf ro execution when the client sends an extcmd packet.
588
589If the callback returns something, it is sent back as if reply was being
590called.
591
592=cut
469 593
470sub register_extcmd { 594sub register_extcmd {
471 my ($name, $cb) = @_; 595 my ($name, $cb) = @_;
472 596
473 my $caller = caller; 597 my $caller = caller;
474 #warn "registering extcmd '$name' to '$caller'"; 598 #warn "registering extcmd '$name' to '$caller'";
475 599
476 $extcmd{$name} = [$cb, $caller]; 600 $EXTCMD{$name} = [$cb, $caller];
477} 601}
602
603cf::player->attach (
604 on_command => sub {
605 my ($pl, $name, $params) = @_;
606
607 my $cb = $COMMAND{$name}
608 or return;
609
610 for my $cmd (@$cb) {
611 $cmd->[1]->($pl->ob, $params);
612 }
613
614 cf::override;
615 },
616 on_extcmd => sub {
617 my ($pl, $buf) = @_;
618
619 my $msg = eval { from_json $buf };
620
621 if (ref $msg) {
622 if (my $cb = $EXTCMD{$msg->{msgtype}}) {
623 if (my %reply = $cb->[0]->($pl, $msg)) {
624 $pl->ext_reply ($msg->{msgid}, %reply);
625 }
626 }
627 } else {
628 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
629 }
630
631 cf::override;
632 },
633);
478 634
479sub register { 635sub register {
480 my ($base, $pkg) = @_; 636 my ($base, $pkg) = @_;
481 637
482 #TODO 638 #TODO
501 . "#line 1 \"$path\"\n{\n" 657 . "#line 1 \"$path\"\n{\n"
502 . (do { local $/; <$fh> }) 658 . (do { local $/; <$fh> })
503 . "\n};\n1"; 659 . "\n};\n1";
504 660
505 eval $source 661 eval $source
506 or die "$path: $@"; 662 or die $@ ? "$path: $@\n"
663 : "extension disabled.\n";
507 664
508 push @exts, $pkg; 665 push @exts, $pkg;
509 $ext_pkg{$base} = $pkg; 666 $ext_pkg{$base} = $pkg;
510 667
511# no strict 'refs'; 668# no strict 'refs';
524# for my $idx (0 .. $#PLUGIN_EVENT) { 681# for my $idx (0 .. $#PLUGIN_EVENT) {
525# delete $hook[$idx]{$pkg}; 682# delete $hook[$idx]{$pkg};
526# } 683# }
527 684
528 # remove commands 685 # remove commands
529 for my $name (keys %command) { 686 for my $name (keys %COMMAND) {
530 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} }; 687 my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
531 688
532 if (@cb) { 689 if (@cb) {
533 $command{$name} = \@cb; 690 $COMMAND{$name} = \@cb;
534 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
535 } else { 691 } else {
536 delete $command{$name};
537 delete $COMMAND{"$name\000"}; 692 delete $COMMAND{$name};
538 } 693 }
539 } 694 }
540 695
541 # remove extcmds 696 # remove extcmds
542 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) { 697 for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
543 delete $extcmd{$name}; 698 delete $EXTCMD{$name};
544 } 699 }
545 700
546 if (my $cb = $pkg->can ("unload")) { 701 if (my $cb = $pkg->can ("unload")) {
547 eval { 702 eval {
548 $cb->($pkg); 703 $cb->($pkg);
552 707
553 Symbol::delete_package $pkg; 708 Symbol::delete_package $pkg;
554} 709}
555 710
556sub load_extensions { 711sub load_extensions {
557 my $LIBDIR = maps_directory "perl";
558
559 for my $ext (<$LIBDIR/*.ext>) { 712 for my $ext (<$LIBDIR/*.ext>) {
560 next unless -r $ext; 713 next unless -r $ext;
561 eval { 714 eval {
562 load_extension $ext; 715 load_extension $ext;
563 1 716 1
564 } or warn "$ext not loaded: $@"; 717 } or warn "$ext not loaded: $@";
565 } 718 }
566} 719}
567 720
568sub _perl_reload(&) {
569 my ($msg) = @_;
570
571 $msg->("reloading...");
572
573 eval {
574 # 1. cancel all watchers
575 $_->cancel for Event::all_watchers;
576
577 # 2. unload all extensions
578 for (@exts) {
579 $msg->("unloading <$_>");
580 unload_extension $_;
581 }
582
583 # 3. unload all modules loaded from $LIBDIR
584 while (my ($k, $v) = each %INC) {
585 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
586
587 $msg->("removing <$k>");
588 delete $INC{$k};
589
590 $k =~ s/\.pm$//;
591 $k =~ s/\//::/g;
592
593 if (my $cb = $k->can ("unload_module")) {
594 $cb->();
595 }
596
597 Symbol::delete_package $k;
598 }
599
600 # 4. get rid of safe::, as good as possible
601 Symbol::delete_package "safe::$_"
602 for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
603
604 # 5. remove register_script_function callbacks
605 # TODO
606
607 # 6. unload cf.pm "a bit"
608 delete $INC{"cf.pm"};
609
610 # don't, removes xs symbols, too,
611 # and global variables created in xs
612 #Symbol::delete_package __PACKAGE__;
613
614 # 7. reload cf.pm
615 $msg->("reloading cf.pm");
616 require cf;
617 };
618 $msg->($@) if $@;
619
620 $msg->("reloaded");
621};
622
623sub perl_reload() {
624 _perl_reload {
625 warn $_[0];
626 print "$_[0]\n";
627 };
628}
629
630register_command "perl-reload", 0, sub {
631 my ($who, $arg) = @_;
632
633 if ($who->flag (FLAG_WIZ)) {
634 _perl_reload {
635 warn $_[0];
636 $who->message ($_[0]);
637 };
638 }
639};
640
641#############################################################################
642# extcmd framework, basically convert ext <msg>
643# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
644
645attach_to_players
646 on_extcmd => sub {
647 my ($pl, $buf) = @_;
648
649 my $msg = eval { from_json $buf };
650
651 if (ref $msg) {
652 if (my $cb = $extcmd{$msg->{msgtype}}) {
653 if (my %reply = $cb->[0]->($pl, $msg)) {
654 $pl->ext_reply ($msg->{msgid}, %reply);
655 }
656 }
657 } else {
658 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
659 }
660
661 cf::override;
662 },
663;
664
665############################################################################# 721#############################################################################
666# load/save/clean perl data associated with a map 722# load/save/clean perl data associated with a map
667 723
668*cf::mapsupport::on_clean = sub { 724*cf::mapsupport::on_clean = sub {
669 my ($map) = @_; 725 my ($map) = @_;
670 726
671 my $path = $map->tmpname; 727 my $path = $map->tmpname;
672 defined $path or return; 728 defined $path or return;
673 729
674 unlink "$path.cfperl";
675 unlink "$path.pst"; 730 unlink "$path.pst";
676}; 731};
677 732
678*cf::mapsupport::on_swapin =
679*cf::mapsupport::on_load = sub {
680 my ($map) = @_;
681
682 my $path = $map->tmpname;
683 $path = $map->path unless defined $path;
684
685 open my $fh, "<:raw", "$path.cfperl"
686 or return; # no perl data
687
688 my $data = Storable::thaw do { local $/; <$fh> };
689
690 $data->{version} <= 1
691 or return; # too new
692
693 $map->_set_obs ($data->{obs});
694};
695
696attach_to_maps prio => -10000, package => cf::mapsupport::; 733cf::map->attach (prio => -10000, package => cf::mapsupport::);
697 734
698############################################################################# 735#############################################################################
699# load/save perl data associated with player->ob objects 736# load/save perl data associated with player->ob objects
700 737
701sub all_objects(@) { 738sub all_objects(@) {
702 @_, map all_objects ($_->inv), @_ 739 @_, map all_objects ($_->inv), @_
703} 740}
704 741
705attach_to_players 742# TODO: compatibility cruft, remove when no longer needed
743cf::player->attach (
706 on_load => sub { 744 on_load => sub {
707 my ($pl, $path) = @_; 745 my ($pl, $path) = @_;
708 746
709 for my $o (all_objects $pl->ob) { 747 for my $o (all_objects $pl->ob) {
710 if (my $value = $o->get_ob_key_value ("_perl_data")) { 748 if (my $value = $o->get_ob_key_value ("_perl_data")) {
712 750
713 %$o = %{ Storable::thaw pack "H*", $value }; 751 %$o = %{ Storable::thaw pack "H*", $value };
714 } 752 }
715 } 753 }
716 }, 754 },
717; 755);
718 756
719############################################################################# 757#############################################################################
720# core extensions - in perl 758
759=head2 CORE EXTENSIONS
760
761Functions and methods that extend core crossfire objects.
762
763=over 4
721 764
722=item cf::player::exists $login 765=item cf::player::exists $login
723 766
724Returns true when the given account exists. 767Returns true when the given account exists.
725 768
728sub cf::player::exists($) { 771sub cf::player::exists($) {
729 cf::player::find $_[0] 772 cf::player::find $_[0]
730 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2; 773 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731} 774}
732 775
733=item $player->reply ($npc, $msg[, $flags]) 776=item $player_object->reply ($npc, $msg[, $flags])
734 777
735Sends a message to the player, as if the npc C<$npc> replied. C<$npc> 778Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736can be C<undef>. Does the right thing when the player is currently in a 779can be C<undef>. Does the right thing when the player is currently in a
737dialogue with the given NPC character. 780dialogue with the given NPC character.
738 781
765 $msg{msgid} = $id; 808 $msg{msgid} = $id;
766 809
767 $self->send ("ext " . to_json \%msg); 810 $self->send ("ext " . to_json \%msg);
768} 811}
769 812
813=item $player_object->may ("access")
814
815Returns wether the given player is authorized to access resource "access"
816(e.g. "command_wizcast").
817
818=cut
819
820sub cf::object::player::may {
821 my ($self, $access) = @_;
822
823 $self->flag (cf::FLAG_WIZ) ||
824 (ref $cf::CFG{"may_$access"}
825 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826 : $cf::CFG{"may_$access"})
827}
828
829=cut
830
770############################################################################# 831#############################################################################
771# map scripting support 832
833=head2 SAFE SCRIPTING
834
835Functions that provide a safe environment to compile and execute
836snippets of perl code without them endangering the safety of the server
837itself. Looping constructs, I/O operators and other built-in functionality
838is not available in the safe scripting environment, and the number of
839functions and methods that can be called is greatly reduced.
840
841=cut
772 842
773our $safe = new Safe "safe"; 843our $safe = new Safe "safe";
774our $safe_hole = new Safe::Hole; 844our $safe_hole = new Safe::Hole;
775 845
776$SIG{FPE} = 'IGNORE'; 846$SIG{FPE} = 'IGNORE';
777 847
778$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time)); 848$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779 849
780# here we export the classes and methods available to script code 850# here we export the classes and methods available to script code
781 851
852=pod
853
854The following fucntions and emthods are available within a safe environment:
855
856 cf::object contr pay_amount pay_player map
857 cf::object::player player
858 cf::player peaceful
859 cf::map trigger
860
861=cut
862
782for ( 863for (
783 ["cf::object" => qw(contr pay_amount pay_player)], 864 ["cf::object" => qw(contr pay_amount pay_player map)],
784 ["cf::object::player" => qw(player)], 865 ["cf::object::player" => qw(player)],
785 ["cf::player" => qw(peaceful)], 866 ["cf::player" => qw(peaceful)],
867 ["cf::map" => qw(trigger)],
786) { 868) {
787 no strict 'refs'; 869 no strict 'refs';
788 my ($pkg, @funs) = @$_; 870 my ($pkg, @funs) = @$_;
789 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"}) 871 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790 for @funs; 872 for @funs;
791} 873}
874
875=over 4
876
877=item @retval = safe_eval $code, [var => value, ...]
878
879Compiled and executes the given perl code snippet. additional var/value
880pairs result in temporary local (my) scalar variables of the given name
881that are available in the code snippet. Example:
882
883 my $five = safe_eval '$first + $second', first => 1, second => 4;
884
885=cut
792 886
793sub safe_eval($;@) { 887sub safe_eval($;@) {
794 my ($code, %vars) = @_; 888 my ($code, %vars) = @_;
795 889
796 my $qcode = $code; 890 my $qcode = $code;
819 } 913 }
820 914
821 wantarray ? @res : $res[0] 915 wantarray ? @res : $res[0]
822} 916}
823 917
918=item cf::register_script_function $function => $cb
919
920Register a function that can be called from within map/npc scripts. The
921function should be reasonably secure and should be put into a package name
922like the extension.
923
924Example: register a function that gets called whenever a map script calls
925C<rent::overview>, as used by the C<rent> extension.
926
927 cf::register_script_function "rent::overview" => sub {
928 ...
929 };
930
931=cut
932
824sub register_script_function { 933sub register_script_function {
825 my ($fun, $cb) = @_; 934 my ($fun, $cb) = @_;
826 935
827 no strict 'refs'; 936 no strict 'refs';
828 *{"safe::$fun"} = $safe_hole->wrap ($cb); 937 *{"safe::$fun"} = $safe_hole->wrap ($cb);
829} 938}
830 939
940=back
941
942=cut
943
944#############################################################################
945
946=head2 EXTENSION DATABASE SUPPORT
947
948Crossfire maintains a very simple database for extension use. It can
949currently store anything that can be serialised using Storable, which
950excludes objects.
951
952The parameter C<$family> should best start with the name of the extension
953using it, it should be unique.
954
955=over 4
956
957=item $hashref = cf::db_get $family
958
959Return a hashref for use by the extension C<$family>, which can be
960modified. After modifications, you have to call C<cf::db_dirty> or
961C<cf::db_sync>.
962
963=item $value = cf::db_get $family => $key
964
965Returns a single value from the database
966
967=item cf::db_put $family => $hashref
968
969Stores the given family hashref into the database. Updates are delayed, if
970you want the data to be synced to disk immediately, use C<cf::db_sync>.
971
972=item cf::db_put $family => $key => $value
973
974Stores the given C<$value> in the family hash. Updates are delayed, if you
975want the data to be synced to disk immediately, use C<cf::db_sync>.
976
977=item cf::db_dirty
978
979Marks the database as dirty, to be updated at a later time.
980
981=item cf::db_sync
982
983Immediately write the database to disk I<if it is dirty>.
984
985=cut
986
987our $DB;
988
989{
990 my $path = cf::localdir . "/database.pst";
991
992 sub db_load() {
993 warn "loading database $path\n";#d# remove later
994 $DB = stat $path ? Storable::retrieve $path : { };
995 }
996
997 my $pid;
998
999 sub db_save() {
1000 warn "saving database $path\n";#d# remove later
1001 waitpid $pid, 0 if $pid;
1002 if (0 == ($pid = fork)) {
1003 $DB->{_meta}{version} = 1;
1004 Storable::nstore $DB, "$path~";
1005 rename "$path~", $path;
1006 cf::_exit 0 if defined $pid;
1007 }
1008 }
1009
1010 my $dirty;
1011
1012 sub db_sync() {
1013 db_save if $dirty;
1014 undef $dirty;
1015 }
1016
1017 my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1018 db_sync;
1019 });
1020
1021 sub db_dirty() {
1022 $dirty = 1;
1023 $idle->start;
1024 }
1025
1026 sub db_get($;$) {
1027 @_ >= 2
1028 ? $DB->{$_[0]}{$_[1]}
1029 : ($DB->{$_[0]} ||= { })
1030 }
1031
1032 sub db_put($$;$) {
1033 if (@_ >= 3) {
1034 $DB->{$_[0]}{$_[1]} = $_[2];
1035 } else {
1036 $DB->{$_[0]} = $_[1];
1037 }
1038 db_dirty;
1039 }
1040
1041 cf::global->attach (
1042 prio => 10000,
1043 on_cleanup => sub {
1044 db_sync;
1045 },
1046 );
1047}
1048
831############################################################################# 1049#############################################################################
832# the server's main() 1050# the server's main()
833 1051
1052sub cfg_load {
1053 open my $fh, "<:utf8", cf::confdir . "/config"
1054 or return;
1055
1056 local $/;
1057 *CFG = YAML::Syck::Load <$fh>;
1058}
1059
834sub main { 1060sub main {
1061 cfg_load;
1062 db_load;
1063 load_extensions;
835 Event::loop; 1064 Event::loop;
836} 1065}
837 1066
838############################################################################# 1067#############################################################################
839# initialisation 1068# initialisation
840 1069
1070sub _perl_reload(&) {
1071 my ($msg) = @_;
1072
1073 $msg->("reloading...");
1074
1075 eval {
1076 # cancel all watchers
1077 for (Event::all_watchers) {
1078 $_->cancel if $_->data & WF_AUTOCANCEL;
1079 }
1080
1081 # unload all extensions
1082 for (@exts) {
1083 $msg->("unloading <$_>");
1084 unload_extension $_;
1085 }
1086
1087 # unload all modules loaded from $LIBDIR
1088 while (my ($k, $v) = each %INC) {
1089 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090
1091 $msg->("removing <$k>");
1092 delete $INC{$k};
1093
1094 $k =~ s/\.pm$//;
1095 $k =~ s/\//::/g;
1096
1097 if (my $cb = $k->can ("unload_module")) {
1098 $cb->();
1099 }
1100
1101 Symbol::delete_package $k;
1102 }
1103
1104 # sync database to disk
1105 cf::db_sync;
1106
1107 # get rid of safe::, as good as possible
1108 Symbol::delete_package "safe::$_"
1109 for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1110
1111 # remove register_script_function callbacks
1112 # TODO
1113
1114 # unload cf.pm "a bit"
1115 delete $INC{"cf.pm"};
1116
1117 # don't, removes xs symbols, too,
1118 # and global variables created in xs
1119 #Symbol::delete_package __PACKAGE__;
1120
1121 # reload cf.pm
1122 $msg->("reloading cf.pm");
1123 require cf;
1124
1125 # load config and database again
1126 cf::cfg_load;
1127 cf::db_load;
1128
1129 # load extensions
1130 $msg->("load extensions");
1131 cf::load_extensions;
1132
1133 # reattach attachments to objects
1134 $msg->("reattach");
1135 _global_reattach;
1136 };
1137 $msg->($@) if $@;
1138
1139 $msg->("reloaded");
1140};
1141
1142sub perl_reload() {
1143 _perl_reload {
1144 warn $_[0];
1145 print "$_[0]\n";
1146 };
1147}
1148
841register "<global>", __PACKAGE__; 1149register "<global>", __PACKAGE__;
842 1150
1151register_command "perl-reload" => sub {
1152 my ($who, $arg) = @_;
1153
1154 if ($who->flag (FLAG_WIZ)) {
1155 _perl_reload {
1156 warn $_[0];
1157 $who->message ($_[0]);
1158 };
1159 }
1160};
1161
843unshift @INC, $LIBDIR; 1162unshift @INC, $LIBDIR;
844 1163
845load_extensions;
846
847$TICK_WATCHER = Event->timer ( 1164$TICK_WATCHER = Event->timer (
848 prio => 1, 1165 prio => 0,
849 at => $NEXT_TICK || 1, 1166 at => $NEXT_TICK || 1,
1167 data => WF_AUTOCANCEL,
850 cb => sub { 1168 cb => sub {
851 cf::server_tick; # one server iteration 1169 cf::server_tick; # one server iteration
852 1170
853 my $NOW = Event::time; 1171 my $NOW = Event::time;
854 $NEXT_TICK += $TICK; 1172 $NEXT_TICK += $TICK;
855 1173
856 # if we are delayed by four ticks, skip them all 1174 # if we are delayed by four ticks or more, skip them all
857 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4; 1175 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
858 1176
859 $TICK_WATCHER->at ($NEXT_TICK); 1177 $TICK_WATCHER->at ($NEXT_TICK);
860 $TICK_WATCHER->start; 1178 $TICK_WATCHER->start;
861 }, 1179 },
862); 1180);
863 1181
1182IO::AIO::max_poll_time $TICK * 0.2;
1183
1184Event->io (fd => IO::AIO::poll_fileno,
1185 poll => 'r',
1186 prio => 5,
1187 data => WF_AUTOCANCEL,
1188 cb => \&IO::AIO::poll_cb);
1189
8641 11901
865 1191

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