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/cvs/deliantra/server/lib/cf.pm
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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.15 by root, Sun Jun 11 15:02:16 2006 UTC vs.
Revision 1.28 by root, Sun Jul 30 17:42:14 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 Event;
11$Event::Eval = 1; # no idea why this is required, but it is
6 12
7use strict; 13use strict;
8 14
9our %COMMAND; 15our %COMMAND;
10our @EVENT; 16our @EVENT;
11our %PROP_TYPE; 17our %PROP_TYPE;
12our %PROP_IDX; 18our %PROP_IDX;
19our $LIBDIR = maps_directory "perl";
13 20
14BEGIN { 21BEGIN {
15 @EVENT = map lc, @EVENT; 22 @EVENT = map lc, @EVENT;
16 23
17 *CORE::GLOBAL::warn = sub { 24 *CORE::GLOBAL::warn = sub {
58prop_gen MAP_PROP => "cf::map"; 65prop_gen MAP_PROP => "cf::map";
59prop_gen ARCH_PROP => "cf::arch"; 66prop_gen ARCH_PROP => "cf::arch";
60 67
61# guessed hierarchies 68# guessed hierarchies
62 69
63@cf::object::player::ISA = 'cf::object'; 70@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64@cf::object::map::ISA = 'cf::object'; 71@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72
73# we bless all objects into derived classes to force a method lookup
74# within the Safe compartment.
75for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region)) {
76 no strict 'refs';
77 @{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78}
79
80$Event::DIED = sub {
81 warn "error in event callback: @_";
82};
65 83
66my %ext_pkg; 84my %ext_pkg;
67my @exts; 85my @exts;
68my @hook; 86my @hook;
69my %command; 87my %command;
100 118
101sub register_command { 119sub register_command {
102 my ($name, $time, $cb) = @_; 120 my ($name, $time, $cb) = @_;
103 121
104 my $caller = caller; 122 my $caller = caller;
105
106 warn "registering command '$name/$time' to '$caller'"; 123 #warn "registering command '$name/$time' to '$caller'";
107 124
108 push @{ $command{$name} }, [$time, $cb, $caller]; 125 push @{ $command{$name} }, [$time, $cb, $caller];
109 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} }; 126 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
110} 127}
111 128
129sub register_extcmd {
130 my ($name, $cb) = @_;
131
132 my $caller = caller;
133 #warn "registering extcmd '$name' to '$caller'";
134
135 $extcmd{$name} = [$cb, $caller];
136}
137
112sub register { 138sub register {
113 my ($base, $pkg) = @_; 139 my ($base, $pkg) = @_;
114 140
115 for my $idx (0 .. $#EVENT) { 141 for my $idx (0 .. $#EVENT) {
116 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) { 142 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
117 warn "registering $EVENT[$idx] hook to '$pkg'\n"; 143 #warn "registering $EVENT[$idx] hook to '$pkg'\n";
118 $hook[$idx]{$base} = $ref; 144 $hook[$idx]{$base} = $ref;
119 } 145 }
120 } 146 }
121} 147}
122 148
145 171
146 push @exts, $pkg; 172 push @exts, $pkg;
147 $ext_pkg{$base} = $pkg; 173 $ext_pkg{$base} = $pkg;
148 174
149# no strict 'refs'; 175# no strict 'refs';
150# @{"$pkg\::ISA"} = cf::ext::; 176# @{"$pkg\::ISA"} = ext::;
151 177
152 register $base, $pkg; 178 register $base, $pkg;
153} 179}
154 180
155sub unload_extension { 181sub unload_extension {
156 my ($pkg) = @_; 182 my ($pkg) = @_;
157 183
158 warn "removing extension $pkg\n"; 184 warn "removing extension $pkg\n";
185
186 if (my $cb = $pkg->can ("on_unload")) {
187 $cb->($pkg);
188 }
159 189
160 # remove hooks 190 # remove hooks
161 for my $idx (0 .. $#EVENT) { 191 for my $idx (0 .. $#EVENT) {
162 delete $hook[$idx]{$pkg}; 192 delete $hook[$idx]{$pkg};
163 } 193 }
174 delete $COMMAND{"$name\000"}; 204 delete $COMMAND{"$name\000"};
175 } 205 }
176 } 206 }
177 207
178 # remove extcmds 208 # remove extcmds
179 for my $name (keys %command) { 209 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
180 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
181
182 if (@cb) {
183 $command{$name} = \@cb;
184 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
185 } else {
186 delete $command{$name}; 210 delete $extcmd{$name};
187 delete $COMMAND{"$name\000"};
188 }
189 } 211 }
190
191 212
192 Symbol::delete_package $pkg; 213 Symbol::delete_package $pkg;
193} 214}
194 215
195sub load_extensions { 216sub load_extensions {
210 if ($who->flag (FLAG_WIZ)) { 231 if ($who->flag (FLAG_WIZ)) {
211 $who->message ("reloading..."); 232 $who->message ("reloading...");
212 233
213 warn "reloading...\n"; 234 warn "reloading...\n";
214 eval { 235 eval {
236 # 1. cancel all watchers
237 $_->cancel for Event::all_watchers;
238
239 # 2. unload all extensions
240 for (@exts) {
241 $who->message ("unloading <$_>");
215 unload_extension $_ for @exts; 242 unload_extension $_;
243 }
244
245 # 3. unload all modules loaded from $LIBDIR
246 while (my ($k, $v) = each %INC) {
247 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
248
249 $who->message ("removing <$k>");
250 delete $INC{$k};
251
252 $k =~ s/\.pm$//;
253 $k =~ s/\//::/g;
254
255 if (my $cb = $k->can ("unload_module")) {
256 $cb->();
257 }
258
259 Symbol::delete_package $k;
260 }
261
262 # 4. get rid of ext::, as good as possible
263 Symbol::delete_package "ext::$_"
264 for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266 # 5. remove register_script_function callbacks
267 # TODO
268
269 # 6. unload cf.pm "a bit"
216 delete $INC{"cf.pm"}; 270 delete $INC{"cf.pm"};
217 271
218 # don't, removes xs symbols, too 272 # don't, removes xs symbols, too
219 #Symbol::delete_package $pkg; 273 #Symbol::delete_package __PACKAGE__;
220 274
275 # 7. reload cf.pm
276 $who->message ("reloading cf.pm");
221 require cf; 277 require cf;
222 }; 278 };
223 warn $@ if $@; 279 warn $@ if $@;
224 $who->message ($@) if $@; 280 $who->message ($@) if $@;
225 warn "reloaded\n"; 281 warn "reloaded\n";
229 $who->message ("Intruder Alert!"); 285 $who->message ("Intruder Alert!");
230 } 286 }
231}; 287};
232 288
233############################################################################# 289#############################################################################
290# utility functions
291
292use JSON::Syck (); # TODO# replace by JSON::PC once working
293
294$JSON::Syck::ImplicitUnicode = 1;
295
296sub from_json($) {
297 JSON::Syck::Load $_[0]
298}
299
300sub to_json($) {
301 JSON::Syck::Dump $_[0]
302}
303
304#############################################################################
234# extcmd framework, basically convert ext <id> <pkg> arg1 args 305# extcmd framework, basically convert ext <msg>
235# into pkg::->on_extcmd_arg1 (...) while shortcutting a few 306# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
236 307
237sub on_extcmd { 308sub on_extcmd {
238 my ($pl, $buf) = @_; 309 my ($pl, $buf) = @_;
239 310
240 my ($id, $pkg, $name, $data) = split / /, $buf, 4; 311 my $msg = eval { from_json $buf };
241 312
242 if (my $method = "cf::ext::$pkg"->can ("on_extcmd_$name")) { 313 if (ref $msg) {
243 $method->($pl, $id, $buf); 314 if (my $cb = $extcmd{$msg->{msgtype}}) {
315 if (my %reply = $cb->[0]->($pl, $msg)) {
316 $pl->ext_reply ($msg->{msgid}, %reply);
317 }
318 }
319 } else {
320 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
321 }
322
244 } 323 1
245} 324}
246 325
247############################################################################# 326#############################################################################
248# load/save/clean perl data associated with a map 327# load/save/clean perl data associated with a map
249 328
305# load/save perl data associated with player->ob objects 384# load/save perl data associated with player->ob objects
306 385
307*on_player_load = sub { 386*on_player_load = sub {
308 my ($ob, $path) = @_; 387 my ($ob, $path) = @_;
309 388
310 if (open my $fh, "<:raw", "$path.cfperl") {
311
312 #d##TODO#remove
313
314 my $data = Storable::thaw do { local $/; <$fh> };
315
316 $data->{version} <= 1
317 or return; # too new
318
319 %$ob = %{$data->{ob}};
320 return;
321 }
322
323 for my $o ($ob, $ob->inv) { 389 for my $o ($ob, $ob->inv) {
324 if (my $value = $o->get_ob_key_value ("_perl_data")) { 390 if (my $value = $o->get_ob_key_value ("_perl_data")) {
325 $o->set_ob_key_value ("_perl_data"); 391 $o->set_ob_key_value ("_perl_data");
326 392
327 %$o = %{ Storable::thaw pack "H*", $value }; 393 %$o = %{ Storable::thaw pack "H*", $value };
332*on_player_save = sub { 398*on_player_save = sub {
333 my ($ob, $path) = @_; 399 my ($ob, $path) = @_;
334 400
335 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_) 401 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
336 for grep %$_, $ob, $ob->inv; 402 for grep %$_, $ob, $ob->inv;
337
338 unlink "$path.cfperl";#d##TODO#remove
339}; 403};
404
405#############################################################################
406# core extensions - in perl
407
408=item cf::player::exists $login
409
410Returns true when the given account exists.
411
412=cut
413
414sub cf::player::exists($) {
415 cf::player::find $_[0]
416 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
417}
418
419=item $player->reply ($npc, $msg[, $flags])
420
421Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
422can be C<undef>. Does the right thing when the player is currently in a
423dialogue with the given NPC character.
424
425=cut
426
427# rough implementation of a future "reply" method that works
428# with dialog boxes.
429sub cf::object::player::reply($$$;$) {
430 my ($self, $npc, $msg, $flags) = @_;
431
432 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
433
434 if ($self->{record_replies}) {
435 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
436 } else {
437 $msg = $npc->name . " says: $msg" if $npc;
438 $self->message ($msg, $flags);
439 }
440}
441
442=item $player->ext_reply ($msgid, $msgtype, %msg)
443
444Sends an ext reply to the player.
445
446=cut
447
448sub cf::player::ext_reply($$$%) {
449 my ($self, $id, %msg) = @_;
450
451 $msg{msgid} = $id;
452
453 $self->send ("ext " . to_json \%msg);
454}
455
456#############################################################################
457# map scripting support
458
459our $safe = new Safe "ext";
460our $safe_hole = new Safe::Hole;
461
462$SIG{FPE} = 'IGNORE';
463
464$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
465
466# here we export the classes and methods available to script code
467
468for (
469 ["cf::object" => qw(contr pay_amount pay_player)],
470 ["cf::object::player" => qw(player)],
471 ["cf::player" => qw(peaceful)],
472) {
473 no strict 'refs';
474 my ($pkg, @funs) = @$_;
475 *{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
476 for @funs;
477}
478
479sub safe_eval($;@) {
480 my ($code, %vars) = @_;
481
482 my $qcode = $code;
483 $qcode =~ s/"/‟/g; # not allowed in #line filenames
484 $qcode =~ s/\n/\\n/g;
485
486 local $_;
487 local @ext::cf::_safe_eval_args = values %vars;
488
489 $code =
490 "do {\n"
491 . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
492 . "#line 0 \"{$qcode}\"\n"
493 . $code
494 . "\n}"
495 ;
496
497 sub_generation_inc;
498 my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
499 sub_generation_inc;
500
501 wantarray ? @res : $res[0]
502}
503
504sub register_script_function {
505 my ($fun, $cb) = @_;
506
507 no strict 'refs';
508 *{"ext::$fun"} = $safe_hole->wrap ($cb);
509}
510
511#############################################################################
512# initialisation
340 513
341register "<global>", __PACKAGE__; 514register "<global>", __PACKAGE__;
342 515
516unshift @INC, $LIBDIR;
517
343load_extensions; 518load_extensions;
344 519
3451 5201
346 521

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