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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 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
16_reload_1; 21sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
17 22
18our %COMMAND = (); 23our %COMMAND = ();
24our %COMMAND_TIME = ();
25our %EXTCMD = ();
26
27_init_vars;
28
19our @EVENT; 29our @EVENT;
20our %PROP_TYPE; 30our $LIBDIR = datadir . "/ext";
21our %PROP_IDX;
22our $LIBDIR = maps_directory "perl";
23 31
24our $TICK = MAX_TIME * 1e-6; 32our $TICK = MAX_TIME * 1e-6;
25our $TICK_WATCHER; 33our $TICK_WATCHER;
26our $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
27 67
28BEGIN { 68BEGIN {
29 *CORE::GLOBAL::warn = sub { 69 *CORE::GLOBAL::warn = sub {
30 my $msg = join "", @_; 70 my $msg = join "", @_;
31 $msg .= "\n" 71 $msg .= "\n"
34 print STDERR "cfperl: $msg"; 74 print STDERR "cfperl: $msg";
35 LOG llevError, "cfperl: $msg"; 75 LOG llevError, "cfperl: $msg";
36 }; 76 };
37} 77}
38 78
39my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply! 79@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40 80@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41# generate property mutators 81@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42sub prop_gen { 82@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43 my ($prefix, $class) = @_; 83@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45 no strict 'refs';
46
47 for my $prop (keys %PROP_TYPE) {
48 $prop =~ /^\Q$prefix\E_(.*$)/ or next;
49 my $sub = lc $1;
50
51 my $type = $PROP_TYPE{$prop};
52 my $idx = $PROP_IDX {$prop};
53
54 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55 $_[0]->get_property ($type, $idx)
56 };
57
58 *{"$class\::set_$sub"} = sub {
59 $_[0]->set_property ($type, $idx, $_[1]);
60 } unless $ignore_set{$prop};
61 }
62}
63
64# auto-generate most of the API
65
66prop_gen OBJECT_PROP => "cf::object";
67# CFAPI_OBJECT_ANIMATION?
68prop_gen PLAYER_PROP => "cf::object::player";
69
70prop_gen MAP_PROP => "cf::map";
71prop_gen ARCH_PROP => "cf::arch";
72
73@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; 84@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74 85
75# 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
76# within the Safe compartment. 87# within the Safe compartment.
77for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) { 88for my $pkg (qw(
89 cf::global
90 cf::object cf::object::player
91 cf::client cf::player
92 cf::arch cf::living
93 cf::map cf::party cf::region
94)) {
78 no strict 'refs'; 95 no strict 'refs';
79 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg; 96 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80} 97}
81 98
82$Event::DIED = sub { 99$Event::DIED = sub {
84}; 101};
85 102
86my %ext_pkg; 103my %ext_pkg;
87my @exts; 104my @exts;
88my @hook; 105my @hook;
89my %command;
90my %extcmd;
91 106
92############################################################################# 107=head2 UTILITY FUNCTIONS
93# utility functions 108
109=over 4
110
111=cut
94 112
95use 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 $json
116
117Converts a JSON string into the corresponding perl data structure.
118
119=cut
96 120
97sub from_json($) { 121sub from_json($) {
98 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs 122 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99 JSON::Syck::Load $_[0] 123 JSON::Syck::Load $_[0]
100} 124}
101 125
126=item $json = cf::to_json $ref
127
128Converts a perl data structure into its JSON representation.
129
130=cut
131
102sub to_json($) { 132sub to_json($) {
103 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 133 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104 JSON::Syck::Dump $_[0] 134 JSON::Syck::Dump $_[0]
105} 135}
106 136
137=back
138
139=cut
140
107############################################################################# 141#############################################################################
108# "new" plug-in system
109 142
143=head2 ATTACHABLE OBJECTS
144
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.
148
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+).
152
153=over 4
154
110=item $object->attach ($attachment, key => $value...) 155=item $attachable->attach ($attachment, key => $value...)
111 156
112Attach a pre-registered attachment to an object. 157=item $attachable->detach ($attachment)
113 158
114=item $player->attach ($attachment, key => $value...) 159Attach/detach a pre-registered attachment to a specific object and give it
160the specified key/value pairs as arguments.
115 161
116Attach a pre-registered attachment to a player. 162Example, attach a minesweeper attachment to the given object, making it a
16310x10 minesweeper game:
117 164
118=item $map->attach ($attachment, key => $value...) # not yet persistent 165 $obj->attach (minesweeper => width => 10, height => 10);
119 166
120Attach a pre-registered attachment to a map. 167=item $bool = $attachable->attached ($name)
121 168
122=item cf::attach_global ... 169Checks wether the named attachment is currently attached to the object.
123 170
124Attach handlers for global events. 171=item cf::CLASS->attach ...
125 172
126This and all following C<attach_*>-functions expect any number of the 173=item cf::CLASS->detach ...
127following handler/hook descriptions: 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:
128 209
129=over 4 210=over 4
130 211
131=item prio => $number 212=item prio => $number
132 213
134by another C<prio> setting). Lower priority handlers get executed 215by another C<prio> setting). Lower priority handlers get executed
135earlier. 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
136registered at priority C<-1000>, so lower priorities should not be used 217registered at priority C<-1000>, so lower priorities should not be used
137unless you know what you are doing. 218unless you know what you are doing.
138 219
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
139=item on_I<event> => \&cb 226=item on_I<event> => \&cb
140 227
141Call the given code reference whenever the named event happens (event is 228Call the given code reference whenever the named event happens (event is
142something 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
143handlers are recognised generally depends on the type of object these 230handlers are recognised generally depends on the type of object these
152package and register them. Only handlers for eevents supported by the 239package and register them. Only handlers for eevents supported by the
153object/class are recognised. 240object/class are recognised.
154 241
155=back 242=back
156 243
157=item cf::attach_to_type $object_type, $subtype, ... 244Example, define an attachment called "sockpuppet" that calls the given
245event handler when a monster attacks:
158 246
159Attach handlers for a specific object type (e.g. TRANSPORT) and 247 cf::object::attachment sockpuppet =>
160subtype. If C<$subtype> is zero or undef, matches all objects of the given 248 on_skill_attack => sub {
161type. 249 my ($self, $victim) = @_;
162 250 ...
163=item cf::attach_to_objects ... 251 }
164 252 }
165Attach handlers to all objects. Do not use this except for debugging or
166very rare events, as handlers are (obviously) called for I<all> objects in
167the game.
168
169=item cf::attach_to_players ...
170
171Attach handlers to all players.
172
173=item cf::attach_to_maps ...
174
175Attach handlers to all maps.
176
177=item cf:register_attachment $name, ...
178 253
179=cut 254=cut
180 255
181# the following variables are defined in .xs and must not be re-created 256# the following variables are defined in .xs and must not be re-created
182our @CB_GLOBAL = (); # registry for all global events 257our @CB_GLOBAL = (); # registry for all global events
183our @CB_OBJECT = (); # all objects (should not be used except in emergency) 258our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184our @CB_PLAYER = (); 259our @CB_PLAYER = ();
260our @CB_CLIENT = ();
185our @CB_TYPE = (); # registry for type (cf-object class) based events 261our @CB_TYPE = (); # registry for type (cf-object class) based events
186our @CB_MAP = (); 262our @CB_MAP = ();
187 263
188my %attachment; 264my %attachment;
189 265
190sub _attach_cb($\%$$$) { 266sub _attach_cb($$$$) {
191 my ($registry, $undo, $event, $prio, $cb) = @_; 267 my ($registry, $event, $prio, $cb) = @_;
192 268
193 use sort 'stable'; 269 use sort 'stable';
194 270
195 $cb = [$prio, $cb]; 271 $cb = [$prio, $cb];
196 272
197 @{$registry->[$event]} = sort 273 @{$registry->[$event]} = sort
198 { $a->[0] cmp $b->[0] } 274 { $a->[0] cmp $b->[0] }
199 @{$registry->[$event] || []}, $cb; 275 @{$registry->[$event] || []}, $cb;
200
201 push @{$undo->{cb}}, [$event, $cb];
202} 276}
203 277
204# attach handles attaching event callbacks 278# attach handles attaching event callbacks
205# 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
206# registry (== where the callback attaches to). 280# registry (== where the callback attaches to).
207sub _attach(\@$@) { 281sub _attach {
208 my ($registry, $klass, @arg) = @_; 282 my ($registry, $klass, @arg) = @_;
209 283
284 my $object_type;
210 my $prio = 0; 285 my $prio = 0;
211
212 my %undo = (
213 registry => $registry,
214 cb => [],
215 );
216
217 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;
218 287
219 while (@arg) { 288 while (@arg) {
220 my $type = shift @arg; 289 my $type = shift @arg;
221 290
222 if ($type eq "prio") { 291 if ($type eq "prio") {
223 $prio = shift @arg; 292 $prio = shift @arg;
224 293
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
225 } elsif ($type eq "package") { 303 } elsif ($type eq "package") {
226 my $pkg = shift @arg; 304 my $pkg = shift @arg;
227 305
228 while (my ($name, $id) = each %cb_id) { 306 while (my ($name, $id) = each %cb_id) {
229 if (my $cb = $pkg->can ($name)) { 307 if (my $cb = $pkg->can ($name)) {
230 _attach_cb $registry, %undo, $id, $prio, $cb; 308 _attach_cb $registry, $id, $prio, $cb;
231 } 309 }
232 } 310 }
233 311
234 } elsif (exists $cb_id{$type}) { 312 } elsif (exists $cb_id{$type}) {
235 _attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg; 313 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236 314
237 } elsif (ref $type) { 315 } elsif (ref $type) {
238 warn "attaching objects not supported, ignoring.\n"; 316 warn "attaching objects not supported, ignoring.\n";
239 317
240 } else { 318 } else {
241 shift @arg; 319 shift @arg;
242 warn "attach argument '$type' not supported, ignoring.\n"; 320 warn "attach argument '$type' not supported, ignoring.\n";
243 } 321 }
244 } 322 }
245
246 \%undo
247} 323}
248 324
249sub _attach_attachment { 325sub _object_attach {
250 my ($obj, $name, %arg) = @_; 326 my ($obj, $name, %arg) = @_;
251 327
252 my $res; 328 return if exists $obj->{_attachment}{$name};
253 329
254 if (my $attach = $attachment{$name}) { 330 if (my $attach = $attachment{$name}) {
255 my $registry = $obj->registry; 331 my $registry = $obj->registry;
256 332
257 for (@$attach) { 333 for (@$attach) {
258 my ($klass, @attach) = @$_; 334 my ($klass, @attach) = @$_;
259 $res = _attach @$registry, $klass, @attach; 335 _attach $registry, $klass, @attach;
260 } 336 }
261 337
262 $obj->{$name} = \%arg; 338 $obj->{$name} = \%arg;
263 } else { 339 } else {
264 warn "object uses attachment '$name' that is not available, postponing.\n"; 340 warn "object uses attachment '$name' that is not available, postponing.\n";
265 } 341 }
266 342
267 $obj->{_attachment}{$name} = undef; 343 $obj->{_attachment}{$name} = undef;
268
269 $res->{attachment} = $name;
270 $res
271} 344}
272 345
273sub 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 {
274 my ($obj, $name, %arg) = @_; 356 my ($obj, $name) = @_;
275 357
276 _attach_attachment $obj, $name, %arg; 358 if (ref $obj) {
277} 359 delete $obj->{_attachment}{$name};
360 reattach ($obj);
361 } else {
362 Carp::croak "cannot, currently, detach class attachments";
363 }
364};
278 365
279sub cf::player::attach { 366sub cf::attachable::attached {
280 my ($obj, $name, %arg) = @_; 367 my ($obj, $name) = @_;
281 368
282 _attach_attachment KLASS_PLAYER, $obj, $name, %arg; 369 exists $obj->{_attachment}{$name}
283} 370}
284 371
285sub cf::map::attach { 372for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
286 my ($obj, $name, %arg) = @_; 373 eval "#line " . __LINE__ . " 'cf.pm'
374 sub cf::\L$klass\E::_attach_registry {
375 (\\\@CB_$klass, KLASS_$klass)
376 }
287 377
288 _attach_attachment KLASS_MAP, $obj, $name, %arg; 378 sub cf::\L$klass\E::attachment {
289}
290
291sub attach_global {
292 _attach @CB_GLOBAL, KLASS_GLOBAL, @_
293}
294
295sub attach_to_type {
296 my $type = shift;
297 my $subtype = shift;
298
299 _attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, 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} = [[KLASS_OBJECT, @_]]; 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 {
374 481
375 for my $name (keys %{ $obj->{_attachment} || {} }) { 482 for my $name (keys %{ $obj->{_attachment} || {} }) {
376 if (my $attach = $attachment{$name}) { 483 if (my $attach = $attachment{$name}) {
377 for (@$attach) { 484 for (@$attach) {
378 my ($klass, @attach) = @$_; 485 my ($klass, @attach) = @$_;
379 _attach @$registry, $klass, @attach; 486 _attach $registry, $klass, @attach;
380 } 487 }
381 } else { 488 } else {
382 warn "object uses attachment '$name' that is not available, postponing.\n"; 489 warn "object uses attachment '$name' that is not available, postponing.\n";
383 } 490 }
384 } 491 }
385} 492}
386 493
387sub object_freezer_save { 494sub object_freezer_save {
388 my ($filename, $objs) = @_; 495 my ($filename, $rdata, $objs) = @_;
389 496
390 if (@$objs) { 497 if (length $$rdata) {
498 warn sprintf "saving %s (%d,%d)\n",
499 $filename, length $$rdata, scalar @$objs;
500
391 open my $fh, ">:raw", "$filename.pst~"; 501 if (open my $fh, ">:raw", "$filename~") {
502 chmod SAVE_MODE, $fh;
503 syswrite $fh, $$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 $fh;
394 chmod SAVE_MODE, "$filename.pst~";
395 rename "$filename.pst~", "$filename.pst"; 510 rename "$filename.pst~", "$filename.pst";
511 } else {
512 unlink "$filename.pst";
513 }
514
515 rename "$filename~", $filename;
516 } else {
517 warn "FATAL: $filename~: $!\n";
518 }
396 } else { 519 } else {
520 unlink $filename;
397 unlink "$filename.pst"; 521 unlink "$filename.pst";
398 } 522 }
523}
399 524
400 chmod SAVE_MODE, "$filename~"; 525sub object_freezer_as_string {
401 rename "$filename~", $filename; 526 my ($rdata, $objs) = @_;
527
528 use Data::Dumper;
529
530 $$rdata . Dumper $objs
402} 531}
403 532
404sub object_thawer_load { 533sub object_thawer_load {
405 my ($filename) = @_; 534 my ($filename) = @_;
406 535
536 local $/;
537
538 my $av;
539
540 #TODO: use sysread etc.
541 if (open my $data, "<:raw:perlio", $filename) {
542 $data = <$data>;
407 open my $fh, "<:raw:perlio", "$filename.pst" 543 if (open my $pst, "<:raw:perlio", "$filename.pst") {
408 or return; 544 $av = eval { (Storable::thaw <$pst>)->{objs} };
545 }
546 return ($data, $av);
547 }
409 548
410 eval { local $/; (Storable::thaw <$fh>)->{objs} } 549 ()
411} 550}
412 551
413attach_to_objects 552cf::object->attach (
414 prio => -1000000, 553 prio => -1000000,
415 on_clone => sub { 554 on_clone => sub {
416 my ($src, $dst) = @_; 555 my ($src, $dst) = @_;
417 556
418 @{$dst->registry} = @{$src->registry}; 557 @{$dst->registry} = @{$src->registry};
420 %$dst = %$src; 559 %$dst = %$src;
421 560
422 %{$dst->{_attachment}} = %{$src->{_attachment}} 561 %{$dst->{_attachment}} = %{$src->{_attachment}}
423 if exists $src->{_attachment}; 562 if exists $src->{_attachment};
424 }, 563 },
425; 564);
426 565
427############################################################################# 566#############################################################################
428# old plug-in events 567# command handling &c
429 568
430sub inject_event { 569=item cf::register_command $name => \&callback($ob,$args);
431 my $extension = shift;
432 my $event_code = shift;
433 570
434 my $cb = $hook[$event_code]{$extension} 571Register a callback for execution when the client sends the user command
435 or return; 572$name.
436 573
437 &$cb 574=cut
438}
439
440sub inject_global_event {
441 my $event = shift;
442
443 my $cb = $hook[$event]
444 or return;
445
446 List::Util::max map &$_, values %$cb
447}
448
449sub inject_command {
450 my ($name, $obj, $params) = @_;
451
452 for my $cmd (@{ $command{$name} }) {
453 $cmd->[1]->($obj, $params);
454 }
455
456 -1
457}
458 575
459sub register_command { 576sub register_command {
460 my ($name, $time, $cb) = @_; 577 my ($name, $cb) = @_;
461 578
462 my $caller = caller; 579 my $caller = caller;
463 #warn "registering command '$name/$time' to '$caller'"; 580 #warn "registering command '$name/$time' to '$caller'";
464 581
465 push @{ $command{$name} }, [$time, $cb, $caller]; 582 push @{ $COMMAND{$name} }, [$caller, $cb];
466 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467} 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
468 593
469sub register_extcmd { 594sub register_extcmd {
470 my ($name, $cb) = @_; 595 my ($name, $cb) = @_;
471 596
472 my $caller = caller; 597 my $caller = caller;
473 #warn "registering extcmd '$name' to '$caller'"; 598 #warn "registering extcmd '$name' to '$caller'";
474 599
475 $extcmd{$name} = [$cb, $caller]; 600 $EXTCMD{$name} = [$cb, $caller];
476} 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);
477 634
478sub register { 635sub register {
479 my ($base, $pkg) = @_; 636 my ($base, $pkg) = @_;
480 637
481 #TODO 638 #TODO
500 . "#line 1 \"$path\"\n{\n" 657 . "#line 1 \"$path\"\n{\n"
501 . (do { local $/; <$fh> }) 658 . (do { local $/; <$fh> })
502 . "\n};\n1"; 659 . "\n};\n1";
503 660
504 eval $source 661 eval $source
505 or die "$path: $@"; 662 or die $@ ? "$path: $@\n"
663 : "extension disabled.\n";
506 664
507 push @exts, $pkg; 665 push @exts, $pkg;
508 $ext_pkg{$base} = $pkg; 666 $ext_pkg{$base} = $pkg;
509 667
510# no strict 'refs'; 668# no strict 'refs';
523# for my $idx (0 .. $#PLUGIN_EVENT) { 681# for my $idx (0 .. $#PLUGIN_EVENT) {
524# delete $hook[$idx]{$pkg}; 682# delete $hook[$idx]{$pkg};
525# } 683# }
526 684
527 # remove commands 685 # remove commands
528 for my $name (keys %command) { 686 for my $name (keys %COMMAND) {
529 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} }; 687 my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
530 688
531 if (@cb) { 689 if (@cb) {
532 $command{$name} = \@cb; 690 $COMMAND{$name} = \@cb;
533 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534 } else { 691 } else {
535 delete $command{$name};
536 delete $COMMAND{"$name\000"}; 692 delete $COMMAND{$name};
537 } 693 }
538 } 694 }
539 695
540 # remove extcmds 696 # remove extcmds
541 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) { 697 for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
542 delete $extcmd{$name}; 698 delete $EXTCMD{$name};
543 } 699 }
544 700
545 if (my $cb = $pkg->can ("unload")) { 701 if (my $cb = $pkg->can ("unload")) {
546 eval { 702 eval {
547 $cb->($pkg); 703 $cb->($pkg);
551 707
552 Symbol::delete_package $pkg; 708 Symbol::delete_package $pkg;
553} 709}
554 710
555sub load_extensions { 711sub load_extensions {
556 my $LIBDIR = maps_directory "perl";
557
558 for my $ext (<$LIBDIR/*.ext>) { 712 for my $ext (<$LIBDIR/*.ext>) {
559 next unless -r $ext; 713 next unless -r $ext;
560 eval { 714 eval {
561 load_extension $ext; 715 load_extension $ext;
562 1 716 1
563 } or warn "$ext not loaded: $@"; 717 } or warn "$ext not loaded: $@";
564 } 718 }
565} 719}
566 720
567sub _perl_reload(&) {
568 my ($msg) = @_;
569
570 $msg->("reloading...");
571
572 eval {
573 # 1. cancel all watchers
574 $_->cancel for Event::all_watchers;
575
576 # 2. unload all extensions
577 for (@exts) {
578 $msg->("unloading <$_>");
579 unload_extension $_;
580 }
581
582 # 3. unload all modules loaded from $LIBDIR
583 while (my ($k, $v) = each %INC) {
584 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
585
586 $msg->("removing <$k>");
587 delete $INC{$k};
588
589 $k =~ s/\.pm$//;
590 $k =~ s/\//::/g;
591
592 if (my $cb = $k->can ("unload_module")) {
593 $cb->();
594 }
595
596 Symbol::delete_package $k;
597 }
598
599 # 4. get rid of safe::, as good as possible
600 Symbol::delete_package "safe::$_"
601 for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603 # 5. remove register_script_function callbacks
604 # TODO
605
606 # 6. unload cf.pm "a bit"
607 delete $INC{"cf.pm"};
608
609 # don't, removes xs symbols, too,
610 # and global variables created in xs
611 #Symbol::delete_package __PACKAGE__;
612
613 # 7. reload cf.pm
614 $msg->("reloading cf.pm");
615 require cf;
616 };
617 $msg->($@) if $@;
618
619 $msg->("reloaded");
620};
621
622sub perl_reload() {
623 _perl_reload {
624 warn $_[0];
625 print "$_[0]\n";
626 };
627}
628
629register_command "perl-reload", 0, sub {
630 my ($who, $arg) = @_;
631
632 if ($who->flag (FLAG_WIZ)) {
633 _perl_reload {
634 warn $_[0];
635 $who->message ($_[0]);
636 };
637 }
638};
639
640#############################################################################
641# extcmd framework, basically convert ext <msg>
642# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644attach_to_players
645 on_extcmd => sub {
646 my ($pl, $buf) = @_;
647
648 my $msg = eval { from_json $buf };
649
650 if (ref $msg) {
651 if (my $cb = $extcmd{$msg->{msgtype}}) {
652 if (my %reply = $cb->[0]->($pl, $msg)) {
653 $pl->ext_reply ($msg->{msgid}, %reply);
654 }
655 }
656 } else {
657 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
658 }
659
660 cf::override;
661 },
662;
663
664############################################################################# 721#############################################################################
665# load/save/clean perl data associated with a map 722# load/save/clean perl data associated with a map
666 723
667*cf::mapsupport::on_clean = sub { 724*cf::mapsupport::on_clean = sub {
668 my ($map) = @_; 725 my ($map) = @_;
671 defined $path or return; 728 defined $path or return;
672 729
673 unlink "$path.pst"; 730 unlink "$path.pst";
674}; 731};
675 732
676# old style persistent data, TODO: remove #d#
677*cf::mapsupport::on_swapin =
678*cf::mapsupport::on_load = sub {
679 my ($map) = @_;
680
681 my $path = $map->tmpname;
682 $path = $map->path unless defined $path;
683
684 open my $fh, "<:raw", "$path.cfperl"
685 or return; # no perl data
686
687 my $data = Storable::thaw do { local $/; <$fh> };
688
689 $data->{version} <= 1
690 or return; # too new
691
692 $map->_set_obs ($data->{obs});
693 $map->invoke (EVENT_MAP_UPGRADE);
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
864_reload_2; 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);
865 1189
8661 11901
867 1191

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