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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.17 by root, Mon Jun 19 10:20:07 2006 UTC vs.
Revision 1.42 by root, Fri Aug 25 15:31:44 2006 UTC

1package cf; 1package cf;
2 2
3use Symbol; 3use Symbol;
4use List::Util; 4use List::Util;
5use Storable; 5use Storable;
6use Opcode;
7use Safe;
8use Safe::Hole;
9
10use Time::HiRes;
11use Event;
12$Event::Eval = 1; # no idea why this is required, but it is
6 13
7use strict; 14use strict;
8 15
9our %COMMAND; 16our %COMMAND = ();
10our @EVENT; 17our @EVENT;
18our @PLUGIN_EVENT;
11our %PROP_TYPE; 19our %PROP_TYPE;
12our %PROP_IDX; 20our %PROP_IDX;
21our $LIBDIR = maps_directory "perl";
22
23our $TICK = MAX_TIME * 1e-6;
24our $TICK_WATCHER;
25our $NEXT_TICK;
13 26
14BEGIN { 27BEGIN {
15 @EVENT = map lc, @EVENT; 28 @PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
16 29
17 *CORE::GLOBAL::warn = sub { 30 *CORE::GLOBAL::warn = sub {
18 my $msg = join "", @_; 31 my $msg = join "", @_;
19 $msg .= "\n" 32 $msg .= "\n"
20 unless $msg =~ /\n$/; 33 unless $msg =~ /\n$/;
58prop_gen MAP_PROP => "cf::map"; 71prop_gen MAP_PROP => "cf::map";
59prop_gen ARCH_PROP => "cf::arch"; 72prop_gen ARCH_PROP => "cf::arch";
60 73
61# guessed hierarchies 74# guessed hierarchies
62 75
63@cf::object::player::ISA = 'cf::object'; 76@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64@cf::object::map::ISA = 'cf::object'; 77@safe::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78
79# we bless all objects into (empty) derived classes to force a method lookup
80# within the Safe compartment.
81for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
82 no strict 'refs';
83 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84}
85
86$Event::DIED = sub {
87 warn "error in event callback: @_";
88};
65 89
66my %ext_pkg; 90my %ext_pkg;
67my @exts; 91my @exts;
68my @hook; 92my @hook;
69my %command; 93my %command;
70my %extcmd; 94my %extcmd;
71 95
96#############################################################################
97# "new" plug-in system
98
99=item cf::object::attach ... # NYI
100
101=item cf::attach_global ...
102
103=item cf::attach_to_type ...
104
105=item cf::attach_to_objects ...
106
107=item cf::attach_to_players ...
108
109=item cf::attach_to_maps ...
110
111 prio => $number, # lower is earlier
112 on_xxx => \&cb,
113 package => package::,
114
115=cut
116
117# the following variables are defined in .xs and must not be re-created
118our @CB_GLOBAL = (); # registry for all global events
119our @CB_OBJECT = ();
120our @CB_PLAYER = ();
121our @CB_TYPE = (); # registry for type (cf-object class) based events
122our @CB_MAP = ();
123
124sub _attach_cb($\%$$$) {
125 my ($registry, $undo, $event, $prio, $cb) = @_;
126
127 use sort 'stable';
128
129 $cb = [$prio, $cb];
130
131 @{$registry->[$event]} = sort
132 { $a->[0] cmp $b->[0] }
133 @{$registry->[$event] || []}, $cb;
134
135 push @{$undo->{cb}}, [$event, $cb];
136}
137
138# attach handles attaching event callbacks
139# the only thing the caller has to do is pass the correct
140# registry (== where the callback attaches to).
141sub _attach(\@$\@) {
142 my ($registry, $klass, $arg) = @_;
143
144 my $prio = 0;
145
146 my %undo = (
147 registry => $registry,
148 cb => [],
149 );
150
151 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
152
153 while (@$arg) {
154 my $type = shift @$arg;
155
156 if ($type eq "prio") {
157 $prio = shift @$arg;
158
159 } elsif ($type eq "package") {
160 my $pkg = shift @$arg;
161
162 while (my ($name, $id) = each %cb_id) {
163 if (my $cb = $pkg->can ($name)) {
164 _attach_cb $registry, %undo, $id, $prio, $cb;
165 }
166 }
167
168 } elsif (exists $cb_id{$type}) {
169 _attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;
170
171 } elsif (ref $type) {
172 warn "attaching objects not supported, ignoring.\n";
173
174 } else {
175 shift @$arg;
176 warn "attach argument '$type' not supported, ignoring.\n";
177 }
178 }
179
180 \%undo
181}
182
183sub cf::object::attach {
184 die;
185}
186
187sub attach_global {
188 _attach @CB_GLOBAL, KLASS_GLOBAL, @_
189}
190
191sub attach_to_type {
192 my $type = shift;
193 _attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
194}
195
196sub attach_to_objects {
197 _attach @CB_OBJECT, KLASS_OBJECT, @_
198}
199
200sub attach_to_players {
201 _attach @CB_PLAYER, KLASS_PLAYER, @_
202}
203
204sub attach_to_maps {
205 _attach @CB_MAP, KLASS_MAP, @_
206}
207
208our $override;
209
210sub override() {
211 $override = 1
212}
213
214sub invoke {
215 my $event = shift;
216 my $callbacks = shift;
217
218 local $override;
219
220 for (@$callbacks) {
221 eval { &{$_->[1]} };
222
223 if ($@) {
224 warn "$@";
225 warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
226 override;
227 }
228
229 return 1 if $override;
230 }
231
232 0
233}
234
235#############################################################################
236# old plug-in events
237
72sub inject_event { 238sub inject_event {
73 my $extension = shift; 239 my $extension = shift;
74 my $event_code = shift; 240 my $event_code = shift;
75 241
76 my $cb = $hook[$event_code]{$extension} 242 my $cb = $hook[$event_code]{$extension}
118} 284}
119 285
120sub register { 286sub register {
121 my ($base, $pkg) = @_; 287 my ($base, $pkg) = @_;
122 288
123 for my $idx (0 .. $#EVENT) { 289 for my $idx (0 .. $#PLUGIN_EVENT) {
124 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) { 290 if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
125 #warn "registering $EVENT[$idx] hook to '$pkg'\n"; 291 #warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
126 $hook[$idx]{$base} = $ref; 292 $hook[$idx]{$base} = $ref;
127 } 293 }
128 } 294 }
129} 295}
130 296
133 299
134 $path =~ /([^\/\\]+)\.ext$/ or die "$path"; 300 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
135 my $base = $1; 301 my $base = $1;
136 my $pkg = $1; 302 my $pkg = $1;
137 $pkg =~ s/[^[:word:]]/_/g; 303 $pkg =~ s/[^[:word:]]/_/g;
138 $pkg = "cf::ext::$pkg"; 304 $pkg = "ext::$pkg";
139 305
140 warn "loading '$path' into '$pkg'\n"; 306 warn "loading '$path' into '$pkg'\n";
141 307
142 open my $fh, "<:utf8", $path 308 open my $fh, "<:utf8", $path
143 or die "$path: $!"; 309 or die "$path: $!";
153 319
154 push @exts, $pkg; 320 push @exts, $pkg;
155 $ext_pkg{$base} = $pkg; 321 $ext_pkg{$base} = $pkg;
156 322
157# no strict 'refs'; 323# no strict 'refs';
158# @{"$pkg\::ISA"} = cf::ext::; 324# @{"$pkg\::ISA"} = ext::;
159 325
160 register $base, $pkg; 326 register $base, $pkg;
161} 327}
162 328
163sub unload_extension { 329sub unload_extension {
164 my ($pkg) = @_; 330 my ($pkg) = @_;
165 331
166 warn "removing extension $pkg\n"; 332 warn "removing extension $pkg\n";
167 333
168 # remove hooks 334 # remove hooks
169 for my $idx (0 .. $#EVENT) { 335 for my $idx (0 .. $#PLUGIN_EVENT) {
170 delete $hook[$idx]{$pkg}; 336 delete $hook[$idx]{$pkg};
171 } 337 }
172 338
173 # remove commands 339 # remove commands
174 for my $name (keys %command) { 340 for my $name (keys %command) {
186 # remove extcmds 352 # remove extcmds
187 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) { 353 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
188 delete $extcmd{$name}; 354 delete $extcmd{$name};
189 } 355 }
190 356
357 if (my $cb = $pkg->can ("on_unload")) {
358 eval {
359 $cb->($pkg);
360 1
361 } or warn "$pkg unloaded, but with errors: $@";
362 }
363
191 Symbol::delete_package $pkg; 364 Symbol::delete_package $pkg;
192} 365}
193 366
194sub load_extensions { 367sub load_extensions {
195 my $LIBDIR = maps_directory "perl"; 368 my $LIBDIR = maps_directory "perl";
201 1 374 1
202 } or warn "$ext not loaded: $@"; 375 } or warn "$ext not loaded: $@";
203 } 376 }
204} 377}
205 378
379sub _perl_reload(&) {
380 my ($msg) = @_;
381
382 $msg->("reloading...");
383
384 eval {
385 # 1. cancel all watchers
386 $_->cancel for Event::all_watchers;
387
388 # 2. unload all extensions
389 for (@exts) {
390 $msg->("unloading <$_>");
391 unload_extension $_;
392 }
393
394 # 3. unload all modules loaded from $LIBDIR
395 while (my ($k, $v) = each %INC) {
396 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
397
398 $msg->("removing <$k>");
399 delete $INC{$k};
400
401 $k =~ s/\.pm$//;
402 $k =~ s/\//::/g;
403
404 if (my $cb = $k->can ("unload_module")) {
405 $cb->();
406 }
407
408 Symbol::delete_package $k;
409 }
410
411 # 4. get rid of safe::, as good as possible
412 Symbol::delete_package "safe::$_"
413 for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
414
415 # 5. remove register_script_function callbacks
416 # TODO
417
418 # 6. unload cf.pm "a bit"
419 delete $INC{"cf.pm"};
420
421 # don't, removes xs symbols, too,
422 # and global variables created in xs
423 #Symbol::delete_package __PACKAGE__;
424
425 # 7. reload cf.pm
426 $msg->("reloading cf.pm");
427 require cf;
428 };
429 $msg->($@) if $@;
430
431 $msg->("reloaded");
432};
433
434sub perl_reload() {
435 _perl_reload {
436 warn $_[0];
437 print "$_[0]\n";
438 };
439}
440
206register_command "perl-reload", 0, sub { 441register_command "perl-reload", 0, sub {
207 my ($who, $arg) = @_; 442 my ($who, $arg) = @_;
208 443
209 if ($who->flag (FLAG_WIZ)) { 444 if ($who->flag (FLAG_WIZ)) {
210 $who->message ("reloading..."); 445 _perl_reload {
211 446 warn $_[0];
212 warn "reloading...\n"; 447 $who->message ($_[0]);
213 eval {
214 unload_extension $_ for @exts;
215 delete $INC{"cf.pm"};
216
217 # don't, removes xs symbols, too
218 #Symbol::delete_package $pkg;
219
220 require cf;
221 }; 448 };
222 warn $@ if $@;
223 $who->message ($@) if $@;
224 warn "reloaded\n";
225
226 $who->message ("reloaded");
227 } else {
228 $who->message ("Intruder Alert!");
229 } 449 }
230}; 450};
231 451
232############################################################################# 452#############################################################################
453# utility functions
454
455use JSON::Syck (); # TODO# replace by JSON::PC once working
456
457sub from_json($) {
458 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
459 JSON::Syck::Load $_[0]
460}
461
462sub to_json($) {
463 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
464 JSON::Syck::Dump $_[0]
465}
466
467#############################################################################
233# extcmd framework, basically convert ext <id> <pkg> arg1 args 468# extcmd framework, basically convert ext <msg>
234# into pkg::->on_extcmd_arg1 (...) while shortcutting a few 469# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
235 470
236sub on_extcmd { 471sub on_extcmd {
237 my ($pl, $buf) = @_; 472 my ($pl, $buf) = @_;
238 473
239 my ($type) = $buf =~ s/^(\S+) // ? $1 : ""; 474 my $msg = eval { from_json $buf };
240 475
241 $extcmd{$type}[0]->($pl, $buf) 476 if (ref $msg) {
242 if $extcmd{$type}; 477 if (my $cb = $extcmd{$msg->{msgtype}}) {
478 if (my %reply = $cb->[0]->($pl, $msg)) {
479 $pl->ext_reply ($msg->{msgid}, %reply);
480 }
481 }
482 } else {
483 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
484 }
485
486 1
243} 487}
244 488
245############################################################################# 489#############################################################################
246# load/save/clean perl data associated with a map 490# load/save/clean perl data associated with a map
247 491
248*on_mapclean = sub { 492*cf::mapsupport::on_clean = sub {
249 my ($map) = @_; 493 my ($map) = @_;
250 494
251 my $path = $map->tmpname; 495 my $path = $map->tmpname;
252 defined $path or return; 496 defined $path or return;
253 497
254 unlink "$path.cfperl"; 498 unlink "$path.cfperl";
255}; 499};
256 500
257*on_mapin = 501*cf::mapsupport::on_swapin =
258*on_mapload = sub { 502*cf::mapsupport::on_load = sub {
259 my ($map) = @_; 503 my ($map) = @_;
260 504
261 my $path = $map->tmpname; 505 my $path = $map->tmpname;
262 $path = $map->path unless defined $path; 506 $path = $map->path unless defined $path;
263 507
270 or return; # too new 514 or return; # too new
271 515
272 $map->_set_obs ($data->{obs}); 516 $map->_set_obs ($data->{obs});
273}; 517};
274 518
275*on_mapout = sub { 519*cf::mapsupport::on_swapout = sub {
276 my ($map) = @_; 520 my ($map) = @_;
277 521
278 my $path = $map->tmpname; 522 my $path = $map->tmpname;
279 $path = $map->path unless defined $path; 523 $path = $map->path unless defined $path;
280 524
297 } else { 541 } else {
298 unlink "$path.cfperl"; 542 unlink "$path.cfperl";
299 } 543 }
300}; 544};
301 545
546attach_to_maps prio => -10000, package => cf::mapsupport::;
547
302############################################################################# 548#############################################################################
303# load/save perl data associated with player->ob objects 549# load/save perl data associated with player->ob objects
304 550
305*on_player_load = sub { 551sub all_objects(@) {
552 @_, map all_objects ($_->inv), @_
553}
554
555attach_to_players
556 on_load => sub {
306 my ($ob, $path) = @_; 557 my ($pl, $path) = @_;
307 558
308 if (open my $fh, "<:raw", "$path.cfperl") { 559 for my $o (all_objects $pl->ob) {
309
310 #d##TODO#remove
311
312 my $data = Storable::thaw do { local $/; <$fh> };
313
314 $data->{version} <= 1
315 or return; # too new
316
317 %$ob = %{$data->{ob}};
318 return;
319 }
320
321 for my $o ($ob, $ob->inv) {
322 if (my $value = $o->get_ob_key_value ("_perl_data")) { 560 if (my $value = $o->get_ob_key_value ("_perl_data")) {
323 $o->set_ob_key_value ("_perl_data"); 561 $o->set_ob_key_value ("_perl_data");
324 562
325 %$o = %{ Storable::thaw pack "H*", $value }; 563 %$o = %{ Storable::thaw pack "H*", $value };
564 }
326 } 565 }
327 } 566 },
328}; 567 on_save => sub {
329
330*on_player_save = sub {
331 my ($ob, $path) = @_; 568 my ($pl, $path) = @_;
332 569
333 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_) 570 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
334 for grep %$_, $ob, $ob->inv; 571 for grep %$_, all_objects $pl->ob;
572 },
573;
335 574
336 unlink "$path.cfperl";#d##TODO#remove 575#############################################################################
337}; 576# core extensions - in perl
577
578=item cf::player::exists $login
579
580Returns true when the given account exists.
581
582=cut
583
584sub cf::player::exists($) {
585 cf::player::find $_[0]
586 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
587}
588
589=item $player->reply ($npc, $msg[, $flags])
590
591Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
592can be C<undef>. Does the right thing when the player is currently in a
593dialogue with the given NPC character.
594
595=cut
596
597# rough implementation of a future "reply" method that works
598# with dialog boxes.
599sub cf::object::player::reply($$$;$) {
600 my ($self, $npc, $msg, $flags) = @_;
601
602 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
603
604 if ($self->{record_replies}) {
605 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
606 } else {
607 $msg = $npc->name . " says: $msg" if $npc;
608 $self->message ($msg, $flags);
609 }
610}
611
612=item $player->ext_reply ($msgid, $msgtype, %msg)
613
614Sends an ext reply to the player.
615
616=cut
617
618sub cf::player::ext_reply($$$%) {
619 my ($self, $id, %msg) = @_;
620
621 $msg{msgid} = $id;
622
623 $self->send ("ext " . to_json \%msg);
624}
625
626#############################################################################
627# map scripting support
628
629our $safe = new Safe "safe";
630our $safe_hole = new Safe::Hole;
631
632$SIG{FPE} = 'IGNORE';
633
634$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
635
636# here we export the classes and methods available to script code
637
638for (
639 ["cf::object" => qw(contr pay_amount pay_player)],
640 ["cf::object::player" => qw(player)],
641 ["cf::player" => qw(peaceful)],
642) {
643 no strict 'refs';
644 my ($pkg, @funs) = @$_;
645 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
646 for @funs;
647}
648
649sub safe_eval($;@) {
650 my ($code, %vars) = @_;
651
652 my $qcode = $code;
653 $qcode =~ s/"/‟/g; # not allowed in #line filenames
654 $qcode =~ s/\n/\\n/g;
655
656 local $_;
657 local @safe::cf::_safe_eval_args = values %vars;
658
659 my $eval =
660 "do {\n"
661 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
662 . "#line 0 \"{$qcode}\"\n"
663 . $code
664 . "\n}"
665 ;
666
667 sub_generation_inc;
668 my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
669 sub_generation_inc;
670
671 if ($@) {
672 warn "$@";
673 warn "while executing safe code '$code'\n";
674 warn "with arguments " . (join " ", %vars) . "\n";
675 }
676
677 wantarray ? @res : $res[0]
678}
679
680sub register_script_function {
681 my ($fun, $cb) = @_;
682
683 no strict 'refs';
684 *{"safe::$fun"} = $safe_hole->wrap ($cb);
685}
686
687#############################################################################
688# the server's main()
689
690sub main {
691 Event::loop;
692}
693
694#############################################################################
695# initialisation
338 696
339register "<global>", __PACKAGE__; 697register "<global>", __PACKAGE__;
340 698
341unshift @INC, maps_directory "perl"; 699unshift @INC, $LIBDIR;
342 700
343load_extensions; 701load_extensions;
344 702
703$TICK_WATCHER = Event->timer (
704 prio => 1,
705 at => $NEXT_TICK || 1,
706 cb => sub {
707 cf::server_tick; # one server iteration
708
709 my $NOW = Event::time;
710 $NEXT_TICK += $TICK;
711
712 # if we are delayed by four ticks, skip them all
713 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
714
715 $TICK_WATCHER->at ($NEXT_TICK);
716 $TICK_WATCHER->start;
717 },
718);
719
3451 7201
346 721

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