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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.65 by root, Tue Sep 12 22:18:55 2006 UTC vs.
Revision 1.171 by root, Sun Jan 14 12:24:48 2007 UTC

1package cf; 1package cf;
2
3use utf8;
4use strict;
2 5
3use Symbol; 6use Symbol;
4use List::Util; 7use List::Util;
5use Storable; 8use Storable;
6use Opcode; 9use Opcode;
7use Safe; 10use Safe;
8use Safe::Hole; 11use Safe::Hole;
9 12
13use Coro 3.3 ();
14use Coro::Event;
15use Coro::Timer;
16use Coro::Signal;
17use Coro::Semaphore;
18use Coro::AIO;
19
20use Data::Dumper;
21use Digest::MD5;
22use Fcntl;
23use IO::AIO 2.32 ();
24use YAML::Syck ();
10use Time::HiRes; 25use Time::HiRes;
11use Event; 26
12$Event::Eval = 1; # no idea why this is required, but it is 27use Event; $Event::Eval = 1; # no idea why this is required, but it is
13 28
14use strict; 29sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15 30
16_init_vars; 31# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
32$YAML::Syck::ImplicitUnicode = 1;
17 33
34$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
35
18our %COMMAND = (); 36our %COMMAND = ();
37our %COMMAND_TIME = ();
38
39our @EXTS = (); # list of extension package names
40our %EXTCMD = ();
41our %EXT_CORO = (); # coroutines bound to extensions
42our %EXT_MAP = (); # pluggable maps
43
19our @EVENT; 44our @EVENT;
20our $LIBDIR = maps_directory "perl"; 45our $LIBDIR = datadir . "/ext";
21 46
22our $TICK = MAX_TIME * 1e-6; 47our $TICK = MAX_TIME * 1e-6;
23our $TICK_WATCHER; 48our $TICK_WATCHER;
49our $AIO_POLL_WATCHER;
50our $WRITE_RUNTIME_WATCHER;
24our $NEXT_TICK; 51our $NEXT_TICK;
52our $NOW;
53
54our %CFG;
55
56our $UPTIME; $UPTIME ||= time;
57our $RUNTIME;
58
59our %PLAYER; # all users
60our %MAP; # all maps
61our $LINK_MAP; # the special {link} map, which is always available
62our $RANDOM_MAPS = cf::localdir . "/random";
63
64our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
65our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
66
67# used to convert map paths into valid unix filenames by replacing / by ∕
68our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
69
70binmode STDOUT;
71binmode STDERR;
72
73# read virtual server time, if available
74unless ($RUNTIME || !-e cf::localdir . "/runtime") {
75 open my $fh, "<", cf::localdir . "/runtime"
76 or die "unable to read runtime file: $!";
77 $RUNTIME = <$fh> + 0.;
78}
79
80mkdir cf::localdir;
81mkdir cf::localdir . "/" . cf::playerdir;
82mkdir cf::localdir . "/" . cf::tmpdir;
83mkdir cf::localdir . "/" . cf::uniquedir;
84mkdir $RANDOM_MAPS;
85
86our $EMERGENCY_POSITION;
87
88#############################################################################
89
90=head2 GLOBAL VARIABLES
91
92=over 4
93
94=item $cf::UPTIME
95
96The timestamp of the server start (so not actually an uptime).
97
98=item $cf::RUNTIME
99
100The time this server has run, starts at 0 and is increased by $cf::TICK on
101every server tick.
102
103=item $cf::LIBDIR
104
105The perl library directory, where extensions and cf-specific modules can
106be found. It will be added to C<@INC> automatically.
107
108=item $cf::NOW
109
110The time of the last (current) server tick.
111
112=item $cf::TICK
113
114The interval between server ticks, in seconds.
115
116=item %cf::CFG
117
118Configuration for the server, loaded from C</etc/crossfire/config>, or
119from wherever your confdir points to.
120
121=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
122
123These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
124or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
125processing has been done. Call C<< ->wait >> on them to maximise the
126window of cpu time available, or simply to synchronise to the server tick.
127
128=back
129
130=cut
25 131
26BEGIN { 132BEGIN {
27 *CORE::GLOBAL::warn = sub { 133 *CORE::GLOBAL::warn = sub {
28 my $msg = join "", @_; 134 my $msg = join "", @_;
135 utf8::encode $msg;
136
29 $msg .= "\n" 137 $msg .= "\n"
30 unless $msg =~ /\n$/; 138 unless $msg =~ /\n$/;
31 139
32 print STDERR "cfperl: $msg";
33 LOG llevError, "cfperl: $msg"; 140 LOG llevError, $msg;
34 }; 141 };
35} 142}
36 143
144@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
145@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
146@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
147@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
148@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
37@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; 149@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
38 150
39# we bless all objects into (empty) derived classes to force a method lookup 151# we bless all objects into (empty) derived classes to force a method lookup
40# within the Safe compartment. 152# within the Safe compartment.
41for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) { 153for my $pkg (qw(
154 cf::global cf::attachable
155 cf::object cf::object::player
156 cf::client cf::player
157 cf::arch cf::living
158 cf::map cf::party cf::region
159)) {
42 no strict 'refs'; 160 no strict 'refs';
43 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg; 161 @{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44} 162}
45 163
46$Event::DIED = sub { 164$Event::DIED = sub {
47 warn "error in event callback: @_"; 165 warn "error in event callback: @_";
48}; 166};
49 167
50my %ext_pkg; 168=head2 UTILITY FUNCTIONS
51my @exts;
52my @hook;
53my %command;
54my %extcmd;
55 169
56############################################################################# 170=over 4
57# utility functions 171
172=item dumpval $ref
173
174=cut
175
176sub dumpval {
177 eval {
178 local $SIG{__DIE__};
179 my $d;
180 if (1) {
181 $d = new Data::Dumper([$_[0]], ["*var"]);
182 $d->Terse(1);
183 $d->Indent(2);
184 $d->Quotekeys(0);
185 $d->Useqq(1);
186 #$d->Bless(...);
187 $d->Seen($_[1]) if @_ > 1;
188 $d = $d->Dump();
189 }
190 $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
191 $d
192 } || "[unable to dump $_[0]: '$@']";
193}
58 194
59use JSON::Syck (); # TODO# replace by JSON::PC once working 195use JSON::Syck (); # TODO# replace by JSON::PC once working
196
197=item $ref = cf::from_json $json
198
199Converts a JSON string into the corresponding perl data structure.
200
201=cut
60 202
61sub from_json($) { 203sub from_json($) {
62 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs 204 $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
63 JSON::Syck::Load $_[0] 205 JSON::Syck::Load $_[0]
64} 206}
65 207
208=item $json = cf::to_json $ref
209
210Converts a perl data structure into its JSON representation.
211
212=cut
213
66sub to_json($) { 214sub to_json($) {
67 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 215 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
68 JSON::Syck::Dump $_[0] 216 JSON::Syck::Dump $_[0]
69} 217}
70 218
219=item cf::lock_wait $string
220
221Wait until the given lock is available. See cf::lock_acquire.
222
223=item my $lock = cf::lock_acquire $string
224
225Wait until the given lock is available and then acquires it and returns
226a Coro::guard object. If the guard object gets destroyed (goes out of scope,
227for example when the coroutine gets canceled), the lock is automatically
228returned.
229
230Lock names should begin with a unique identifier (for example, cf::map::find
231uses map_find and cf::map::load uses map_load).
232
233=cut
234
235our %LOCK;
236
237sub lock_wait($) {
238 my ($key) = @_;
239
240 # wait for lock, if any
241 while ($LOCK{$key}) {
242 push @{ $LOCK{$key} }, $Coro::current;
243 Coro::schedule;
244 }
245}
246
247sub lock_acquire($) {
248 my ($key) = @_;
249
250 # wait, to be sure we are not locked
251 lock_wait $key;
252
253 $LOCK{$key} = [];
254
255 Coro::guard {
256 # wake up all waiters, to be on the safe side
257 $_->ready for @{ delete $LOCK{$key} };
258 }
259}
260
261sub freeze_mainloop {
262 return unless $TICK_WATCHER->is_active;
263
264 my $guard = Coro::guard {
265 $TICK_WATCHER->start;
266 $WRITE_RUNTIME_WATCHER->start;
267 };
268 $WRITE_RUNTIME_WATCHER->stop;
269 $TICK_WATCHER->stop;
270 $guard
271}
272
273=item cf::async { BLOCK }
274
275Currently the same as Coro::async_pool, meaning you cannot use
276C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
277thing you are allowed to do is call C<prio> on it.
278
279=cut
280
281BEGIN { *async = \&Coro::async_pool }
282
283=item cf::sync_job { BLOCK }
284
285The design of crossfire+ requires that the main coro ($Coro::main) is
286always able to handle events or runnable, as crossfire+ is only partly
287reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
288
289If it must be done, put the blocking parts into C<sync_job>. This will run
290the given BLOCK in another coroutine while waiting for the result. The
291server will be frozen during this time, so the block should either finish
292fast or be very important.
293
294=cut
295
296sub sync_job(&) {
297 my ($job) = @_;
298
299 if ($Coro::current == $Coro::main) {
300 # this is the main coro, too bad, we have to block
301 # till the operation succeeds, freezing the server :/
302
303 # TODO: use suspend/resume instead
304 # (but this is cancel-safe)
305 my $freeze_guard = freeze_mainloop;
306
307 my $busy = 1;
308 my @res;
309
310 (async {
311 @res = eval { $job->() };
312 warn $@ if $@;
313 undef $busy;
314 })->prio (Coro::PRIO_MAX);
315
316 while ($busy) {
317 Coro::cede or Event::one_event;
318 }
319
320 wantarray ? @res : $res[0]
321 } else {
322 # we are in another coroutine, how wonderful, everything just works
323
324 $job->()
325 }
326}
327
328=item $coro = cf::async_ext { BLOCK }
329
330Like async, but this coro is automatically being canceled when the
331extension calling this is being unloaded.
332
333=cut
334
335sub async_ext(&) {
336 my $cb = shift;
337
338 my $coro = &Coro::async ($cb);
339
340 $coro->on_destroy (sub {
341 delete $EXT_CORO{$coro+0};
342 });
343 $EXT_CORO{$coro+0} = $coro;
344
345 $coro
346}
347
348sub write_runtime {
349 my $runtime = cf::localdir . "/runtime";
350
351 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
352 or return;
353
354 my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
355 (aio_write $fh, 0, (length $value), $value, 0) <= 0
356 and return;
357
358 aio_fsync $fh
359 and return;
360
361 close $fh
362 or return;
363
364 aio_rename "$runtime~", $runtime
365 and return;
366
367 1
368}
369
370=back
371
372=cut
373
71############################################################################# 374#############################################################################
72# "new" plug-in system
73 375
74=head3 EVENTS AND OBJECT ATTACHMENTS 376=head2 ATTACHABLE OBJECTS
377
378Many objects in crossfire are so-called attachable objects. That means you can
379attach callbacks/event handlers (a collection of which is called an "attachment")
380to it. All such attachable objects support the following methods.
381
382In the following description, CLASS can be any of C<global>, C<object>
383C<player>, C<client> or C<map> (i.e. the attachable objects in
384crossfire+).
75 385
76=over 4 386=over 4
77 387
78=item $object->attach ($attachment, key => $value...)
79
80=item $object->detach ($attachment)
81
82Attach/detach a pre-registered attachment to an object.
83
84=item $player->attach ($attachment, key => $value...)
85
86=item $player->detach ($attachment)
87
88Attach/detach a pre-registered attachment to a player.
89
90=item $map->attach ($attachment, key => $value...) 388=item $attachable->attach ($attachment, key => $value...)
91 389
92=item $map->detach ($attachment) 390=item $attachable->detach ($attachment)
93 391
94Attach/detach a pre-registered attachment to a map. 392Attach/detach a pre-registered attachment to a specific object and give it
393the specified key/value pairs as arguments.
95 394
96=item $bool = $object->attached ($name) 395Example, attach a minesweeper attachment to the given object, making it a
39610x10 minesweeper game:
97 397
98=item $bool = $player->attached ($name) 398 $obj->attach (minesweeper => width => 10, height => 10);
99 399
100=item $bool = $map->attached ($name) 400=item $bool = $attachable->attached ($name)
101 401
102Checks wether the named attachment is currently attached to the object. 402Checks wether the named attachment is currently attached to the object.
103 403
104=item cf::attach_global ... 404=item cf::CLASS->attach ...
105 405
106Attach handlers for global events. 406=item cf::CLASS->detach ...
107 407
108This and all following C<attach_*>-functions expect any number of the 408Define an anonymous attachment and attach it to all objects of the given
109following handler/hook descriptions: 409CLASS. See the next function for an explanation of its arguments.
410
411You can attach to global events by using the C<cf::global> class.
412
413Example, log all player logins:
414
415 cf::player->attach (
416 on_login => sub {
417 my ($pl) = @_;
418 ...
419 },
420 );
421
422Example, attach to the jeweler skill:
423
424 cf::object->attach (
425 type => cf::SKILL,
426 subtype => cf::SK_JEWELER,
427 on_use_skill => sub {
428 my ($sk, $ob, $part, $dir, $msg) = @_;
429 ...
430 },
431 );
432
433=item cf::CLASS::attachment $name, ...
434
435Register an attachment by C<$name> through which attachable objects of the
436given CLASS can refer to this attachment.
437
438Some classes such as crossfire maps and objects can specify attachments
439that are attached at load/instantiate time, thus the need for a name.
440
441These calls expect any number of the following handler/hook descriptions:
110 442
111=over 4 443=over 4
112 444
113=item prio => $number 445=item prio => $number
114 446
116by another C<prio> setting). Lower priority handlers get executed 448by another C<prio> setting). Lower priority handlers get executed
117earlier. The default priority is C<0>, and many built-in handlers are 449earlier. The default priority is C<0>, and many built-in handlers are
118registered at priority C<-1000>, so lower priorities should not be used 450registered at priority C<-1000>, so lower priorities should not be used
119unless you know what you are doing. 451unless you know what you are doing.
120 452
453=item type => $type
454
455(Only for C<< cf::object->attach >> calls), limits the attachment to the
456given type of objects only (the additional parameter C<subtype> can be
457used to further limit to the given subtype).
458
121=item on_I<event> => \&cb 459=item on_I<event> => \&cb
122 460
123Call the given code reference whenever the named event happens (event is 461Call the given code reference whenever the named event happens (event is
124something like C<instantiate>, C<apply>, C<use_skill> and so on, and which 462something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
125handlers are recognised generally depends on the type of object these 463handlers are recognised generally depends on the type of object these
134package and register them. Only handlers for eevents supported by the 472package and register them. Only handlers for eevents supported by the
135object/class are recognised. 473object/class are recognised.
136 474
137=back 475=back
138 476
139=item cf::attach_to_type $object_type, $subtype, ... 477Example, define an attachment called "sockpuppet" that calls the given
478event handler when a monster attacks:
140 479
141Attach handlers for a specific object type (e.g. TRANSPORT) and 480 cf::object::attachment sockpuppet =>
142subtype. If C<$subtype> is zero or undef, matches all objects of the given 481 on_skill_attack => sub {
143type. 482 my ($self, $victim) = @_;
144 483 ...
145=item cf::attach_to_objects ...
146
147Attach handlers to all objects. Do not use this except for debugging or
148very rare events, as handlers are (obviously) called for I<all> objects in
149the game.
150
151=item cf::attach_to_players ...
152
153Attach handlers to all players.
154
155=item cf::attach_to_maps ...
156
157Attach handlers to all maps.
158
159=item cf:register_attachment $name, ...
160
161Register an attachment by name through which objects can refer to this
162attachment.
163
164=item cf:register_player_attachment $name, ...
165
166Register an attachment by name through which players can refer to this
167attachment.
168
169=item cf:register_map_attachment $name, ...
170
171Register an attachment by name through which maps can refer to this
172attachment.
173
174=cut
175
176# the following variables are defined in .xs and must not be re-created
177our @CB_GLOBAL = (); # registry for all global events
178our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179our @CB_PLAYER = ();
180our @CB_TYPE = (); # registry for type (cf-object class) based events
181our @CB_MAP = ();
182
183my %attachment;
184
185sub _attach_cb($\%$$$) {
186 my ($registry, $undo, $event, $prio, $cb) = @_;
187
188 use sort 'stable';
189
190 $cb = [$prio, $cb];
191
192 @{$registry->[$event]} = sort
193 { $a->[0] cmp $b->[0] }
194 @{$registry->[$event] || []}, $cb;
195
196 push @{$undo->{cb}}, [$event, $cb];
197}
198
199# attach handles attaching event callbacks
200# the only thing the caller has to do is pass the correct
201# registry (== where the callback attaches to).
202sub _attach(\@$@) {
203 my ($registry, $klass, @arg) = @_;
204
205 my $prio = 0;
206
207 my %undo = (
208 registry => $registry,
209 cb => [],
210 );
211
212 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214 while (@arg) {
215 my $type = shift @arg;
216
217 if ($type eq "prio") {
218 $prio = shift @arg;
219
220 } elsif ($type eq "package") {
221 my $pkg = shift @arg;
222
223 while (my ($name, $id) = each %cb_id) {
224 if (my $cb = $pkg->can ($name)) {
225 _attach_cb $registry, %undo, $id, $prio, $cb;
226 }
227 } 484 }
228
229 } elsif (exists $cb_id{$type}) {
230 _attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232 } elsif (ref $type) {
233 warn "attaching objects not supported, ignoring.\n";
234
235 } else {
236 shift @arg;
237 warn "attach argument '$type' not supported, ignoring.\n";
238 }
239 }
240
241 \%undo
242}
243
244sub _attach_attachment {
245 my ($obj, $name, %arg) = @_;
246
247 return if exists $obj->{_attachment}{$name};
248
249 my $res;
250
251 if (my $attach = $attachment{$name}) {
252 my $registry = $obj->registry;
253
254 for (@$attach) {
255 my ($klass, @attach) = @$_;
256 $res = _attach @$registry, $klass, @attach;
257 }
258
259 $obj->{$name} = \%arg;
260 } else {
261 warn "object uses attachment '$name' that is not available, postponing.\n";
262 }
263
264 $obj->{_attachment}{$name} = undef;
265
266 $res->{attachment} = $name;
267 $res
268}
269
270*cf::object::attach =
271*cf::player::attach =
272*cf::map::attach = sub {
273 my ($obj, $name, %arg) = @_;
274
275 _attach_attachment $obj, $name, %arg;
276};
277
278# all those should be optimised
279*cf::object::detach =
280*cf::player::detach =
281*cf::map::detach = sub {
282 my ($obj, $name) = @_;
283
284 delete $obj->{_attachment}{$name};
285 reattach ($obj);
286};
287
288*cf::object::attached =
289*cf::player::attached =
290*cf::map::attached = sub {
291 my ($obj, $name) = @_;
292
293 exists $obj->{_attachment}{$name}
294};
295
296sub attach_global {
297 _attach @CB_GLOBAL, KLASS_GLOBAL, @_
298}
299
300sub attach_to_type {
301 my $type = shift;
302 my $subtype = shift;
303
304 _attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305}
306
307sub attach_to_objects {
308 _attach @CB_OBJECT, KLASS_OBJECT, @_
309}
310
311sub attach_to_players {
312 _attach @CB_PLAYER, KLASS_PLAYER, @_
313}
314
315sub attach_to_maps {
316 _attach @CB_MAP, KLASS_MAP, @_
317}
318
319sub register_attachment {
320 my $name = shift;
321
322 $attachment{$name} = [[KLASS_OBJECT, @_]];
323}
324
325sub register_player_attachment {
326 my $name = shift;
327
328 $attachment{$name} = [[KLASS_PLAYER, @_]];
329}
330
331sub register_map_attachment {
332 my $name = shift;
333
334 $attachment{$name} = [[KLASS_MAP, @_]];
335}
336
337our $override;
338our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340sub override {
341 $override = 1;
342 @invoke_results = ();
343}
344
345sub do_invoke {
346 my $event = shift;
347 my $callbacks = shift;
348
349 @invoke_results = ();
350
351 local $override;
352
353 for (@$callbacks) {
354 eval { &{$_->[1]} };
355
356 if ($@) {
357 warn "$@";
358 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
359 override;
360 }
361
362 return 1 if $override;
363 }
364
365 0 485 }
366}
367 486
368=item $bool = cf::invoke EVENT_GLOBAL_XXX, ... 487=item $attachable->valid
369
370=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376Generate a global/object/player/map-specific event with the given arguments.
377
378This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379removed in future versions), and there is no public API to access override
380results (if you must, access C<@cf::invoke_results> directly).
381
382=back
383
384=head2 methods valid for all pointers
385
386=over 4
387
388=item $object->valid
389
390=item $player->valid
391
392=item $map->valid
393 488
394Just because you have a perl object does not mean that the corresponding 489Just because you have a perl object does not mean that the corresponding
395C-level object still exists. If you try to access an object that has no 490C-level object still exists. If you try to access an object that has no
396valid C counterpart anymore you get an exception at runtime. This method 491valid C counterpart anymore you get an exception at runtime. This method
397can be used to test for existence of the C object part without causing an 492can be used to test for existence of the C object part without causing an
398exception. 493exception.
399 494
495=cut
496
497# the following variables are defined in .xs and must not be re-created
498our @CB_GLOBAL = (); # registry for all global events
499our @CB_ATTACHABLE = (); # registry for all attachables
500our @CB_OBJECT = (); # all objects (should not be used except in emergency)
501our @CB_PLAYER = ();
502our @CB_CLIENT = ();
503our @CB_TYPE = (); # registry for type (cf-object class) based events
504our @CB_MAP = ();
505
506my %attachment;
507
508sub cf::attachable::thawer_merge {
509 # simply override everything except _meta
510 local $_[0]{_meta};
511 %{$_[0]} = %{$_[1]};
512}
513
514sub _attach_cb($$$$) {
515 my ($registry, $event, $prio, $cb) = @_;
516
517 use sort 'stable';
518
519 $cb = [$prio, $cb];
520
521 @{$registry->[$event]} = sort
522 { $a->[0] cmp $b->[0] }
523 @{$registry->[$event] || []}, $cb;
524}
525
526# hack
527my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
528
529# attach handles attaching event callbacks
530# the only thing the caller has to do is pass the correct
531# registry (== where the callback attaches to).
532sub _attach {
533 my ($registry, $klass, @arg) = @_;
534
535 my $object_type;
536 my $prio = 0;
537 my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
538
539 #TODO: get rid of this hack
540 if ($attachable_klass{$klass}) {
541 %cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
542 }
543
544 while (@arg) {
545 my $type = shift @arg;
546
547 if ($type eq "prio") {
548 $prio = shift @arg;
549
550 } elsif ($type eq "type") {
551 $object_type = shift @arg;
552 $registry = $CB_TYPE[$object_type] ||= [];
553
554 } elsif ($type eq "subtype") {
555 defined $object_type or Carp::croak "subtype specified without type";
556 my $object_subtype = shift @arg;
557 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
558
559 } elsif ($type eq "package") {
560 my $pkg = shift @arg;
561
562 while (my ($name, $id) = each %cb_id) {
563 if (my $cb = $pkg->can ($name)) {
564 _attach_cb $registry, $id, $prio, $cb;
565 }
566 }
567
568 } elsif (exists $cb_id{$type}) {
569 _attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
570
571 } elsif (ref $type) {
572 warn "attaching objects not supported, ignoring.\n";
573
574 } else {
575 shift @arg;
576 warn "attach argument '$type' not supported, ignoring.\n";
577 }
578 }
579}
580
581sub _object_attach {
582 my ($obj, $name, %arg) = @_;
583
584 return if exists $obj->{_attachment}{$name};
585
586 if (my $attach = $attachment{$name}) {
587 my $registry = $obj->registry;
588
589 for (@$attach) {
590 my ($klass, @attach) = @$_;
591 _attach $registry, $klass, @attach;
592 }
593
594 $obj->{$name} = \%arg;
595 } else {
596 warn "object uses attachment '$name' that is not available, postponing.\n";
597 }
598
599 $obj->{_attachment}{$name} = undef;
600}
601
602sub cf::attachable::attach {
603 if (ref $_[0]) {
604 _object_attach @_;
605 } else {
606 _attach shift->_attach_registry, @_;
607 }
608};
609
610# all those should be optimised
611sub cf::attachable::detach {
612 my ($obj, $name) = @_;
613
614 if (ref $obj) {
615 delete $obj->{_attachment}{$name};
616 reattach ($obj);
617 } else {
618 Carp::croak "cannot, currently, detach class attachments";
619 }
620};
621
622sub cf::attachable::attached {
623 my ($obj, $name) = @_;
624
625 exists $obj->{_attachment}{$name}
626}
627
628for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
629 eval "#line " . __LINE__ . " 'cf.pm'
630 sub cf::\L$klass\E::_attach_registry {
631 (\\\@CB_$klass, KLASS_$klass)
632 }
633
634 sub cf::\L$klass\E::attachment {
635 my \$name = shift;
636
637 \$attachment{\$name} = [[KLASS_$klass, \@_]];
638 }
639 ";
640 die if $@;
641}
642
643our $override;
644our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
645
646sub override {
647 $override = 1;
648 @invoke_results = ();
649}
650
651sub do_invoke {
652 my $event = shift;
653 my $callbacks = shift;
654
655 @invoke_results = ();
656
657 local $override;
658
659 for (@$callbacks) {
660 eval { &{$_->[1]} };
661
662 if ($@) {
663 warn "$@";
664 warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
665 override;
666 }
667
668 return 1 if $override;
669 }
670
671 0
672}
673
674=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
675
676=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
677
678Generate an object-specific event with the given arguments.
679
680This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
681removed in future versions), and there is no public API to access override
682results (if you must, access C<@cf::invoke_results> directly).
683
400=back 684=back
401 685
402=cut 686=cut
403
404*cf::object::valid =
405*cf::player::valid =
406*cf::map::valid = \&cf::_valid;
407 687
408############################################################################# 688#############################################################################
409# object support 689# object support
410 690
411sub instantiate {
412 my ($obj, $data) = @_;
413
414 $data = from_json $data;
415
416 for (@$data) {
417 my ($name, $args) = @$_;
418
419 $obj->attach ($name, %{$args || {} });
420 }
421}
422
423# basically do the same as instantiate, without calling instantiate
424sub reattach { 691sub reattach {
692 # basically do the same as instantiate, without calling instantiate
425 my ($obj) = @_; 693 my ($obj) = @_;
694
695 bless $obj, ref $obj; # re-bless in case extensions have been reloaded
696
426 my $registry = $obj->registry; 697 my $registry = $obj->registry;
427 698
428 @$registry = (); 699 @$registry = ();
429 700
430 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} }; 701 delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
431 702
432 for my $name (keys %{ $obj->{_attachment} || {} }) { 703 for my $name (keys %{ $obj->{_attachment} || {} }) {
433 if (my $attach = $attachment{$name}) { 704 if (my $attach = $attachment{$name}) {
434 for (@$attach) { 705 for (@$attach) {
435 my ($klass, @attach) = @$_; 706 my ($klass, @attach) = @$_;
436 _attach @$registry, $klass, @attach; 707 _attach $registry, $klass, @attach;
437 } 708 }
438 } else { 709 } else {
439 warn "object uses attachment '$name' that is not available, postponing.\n"; 710 warn "object uses attachment '$name' that is not available, postponing.\n";
440 } 711 }
441 } 712 }
442} 713}
443 714
444sub object_freezer_save { 715cf::attachable->attach (
445 my ($filename, $rdata, $objs) = @_;
446
447 if (length $$rdata) {
448 warn sprintf "saving %s (%d,%d)\n",
449 $filename, length $$rdata, scalar @$objs;
450
451 if (open my $fh, ">:raw", "$filename~") {
452 chmod SAVE_MODE, $fh;
453 syswrite $fh, $$rdata;
454 close $fh;
455
456 if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
457 chmod SAVE_MODE, $fh;
458 syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
459 close $fh;
460 rename "$filename.pst~", "$filename.pst";
461 } else {
462 unlink "$filename.pst";
463 }
464
465 rename "$filename~", $filename;
466 } else {
467 warn "FATAL: $filename~: $!\n";
468 }
469 } else {
470 unlink $filename;
471 unlink "$filename.pst";
472 }
473}
474
475sub object_thawer_load {
476 my ($filename) = @_;
477
478 local $/;
479
480 my $av;
481
482 #TODO: use sysread etc.
483 if (open my $data, "<:raw:perlio", $filename) {
484 $data = <$data>;
485 if (open my $pst, "<:raw:perlio", "$filename.pst") {
486 $av = eval { (Storable::thaw <$pst>)->{objs} };
487 }
488 return ($data, $av);
489 }
490
491 ()
492}
493
494attach_to_objects
495 prio => -1000000, 716 prio => -1000000,
717 on_instantiate => sub {
718 my ($obj, $data) = @_;
719
720 $data = from_json $data;
721
722 for (@$data) {
723 my ($name, $args) = @$_;
724
725 $obj->attach ($name, %{$args || {} });
726 }
727 },
728 on_reattach => \&reattach,
496 on_clone => sub { 729 on_clone => sub {
497 my ($src, $dst) = @_; 730 my ($src, $dst) = @_;
498 731
499 @{$dst->registry} = @{$src->registry}; 732 @{$dst->registry} = @{$src->registry};
500 733
501 %$dst = %$src; 734 %$dst = %$src;
502 735
503 %{$dst->{_attachment}} = %{$src->{_attachment}} 736 %{$dst->{_attachment}} = %{$src->{_attachment}}
504 if exists $src->{_attachment}; 737 if exists $src->{_attachment};
505 }, 738 },
506; 739);
740
741sub object_freezer_save {
742 my ($filename, $rdata, $objs) = @_;
743
744 sync_job {
745 if (length $$rdata) {
746 warn sprintf "saving %s (%d,%d)\n",
747 $filename, length $$rdata, scalar @$objs;
748
749 if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
750 chmod SAVE_MODE, $fh;
751 aio_write $fh, 0, (length $$rdata), $$rdata, 0;
752 aio_fsync $fh;
753 close $fh;
754
755 if (@$objs) {
756 if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
757 chmod SAVE_MODE, $fh;
758 my $data = Storable::nfreeze { version => 1, objs => $objs };
759 aio_write $fh, 0, (length $data), $data, 0;
760 aio_fsync $fh;
761 close $fh;
762 aio_rename "$filename.pst~", "$filename.pst";
763 }
764 } else {
765 aio_unlink "$filename.pst";
766 }
767
768 aio_rename "$filename~", $filename;
769 } else {
770 warn "FATAL: $filename~: $!\n";
771 }
772 } else {
773 aio_unlink $filename;
774 aio_unlink "$filename.pst";
775 }
776 }
777}
778
779sub object_freezer_as_string {
780 my ($rdata, $objs) = @_;
781
782 use Data::Dumper;
783
784 $$rdata . Dumper $objs
785}
786
787sub object_thawer_load {
788 my ($filename) = @_;
789
790 my ($data, $av);
791
792 (aio_load $filename, $data) >= 0
793 or return;
794
795 unless (aio_stat "$filename.pst") {
796 (aio_load "$filename.pst", $av) >= 0
797 or return;
798 $av = eval { (Storable::thaw $av)->{objs} };
799 }
800
801 warn sprintf "loading %s (%d)\n",
802 $filename, length $data, scalar @{$av || []};#d#
803 return ($data, $av);
804}
507 805
508############################################################################# 806#############################################################################
509# old plug-in events 807# command handling &c
510 808
511sub inject_event { 809=item cf::register_command $name => \&callback($ob,$args);
512 my $extension = shift;
513 my $event_code = shift;
514 810
515 my $cb = $hook[$event_code]{$extension} 811Register a callback for execution when the client sends the user command
516 or return; 812$name.
517 813
518 &$cb 814=cut
519}
520
521sub inject_global_event {
522 my $event = shift;
523
524 my $cb = $hook[$event]
525 or return;
526
527 List::Util::max map &$_, values %$cb
528}
529
530sub inject_command {
531 my ($name, $obj, $params) = @_;
532
533 for my $cmd (@{ $command{$name} }) {
534 $cmd->[1]->($obj, $params);
535 }
536
537 -1
538}
539 815
540sub register_command { 816sub register_command {
541 my ($name, $time, $cb) = @_; 817 my ($name, $cb) = @_;
542 818
543 my $caller = caller; 819 my $caller = caller;
544 #warn "registering command '$name/$time' to '$caller'"; 820 #warn "registering command '$name/$time' to '$caller'";
545 821
546 push @{ $command{$name} }, [$time, $cb, $caller]; 822 push @{ $COMMAND{$name} }, [$caller, $cb];
547 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548} 823}
824
825=item cf::register_extcmd $name => \&callback($pl,$packet);
826
827Register a callbackf ro execution when the client sends an extcmd packet.
828
829If the callback returns something, it is sent back as if reply was being
830called.
831
832=cut
549 833
550sub register_extcmd { 834sub register_extcmd {
551 my ($name, $cb) = @_; 835 my ($name, $cb) = @_;
552 836
553 my $caller = caller; 837 $EXTCMD{$name} = $cb;
554 #warn "registering extcmd '$name' to '$caller'";
555
556 $extcmd{$name} = [$cb, $caller];
557} 838}
558 839
559sub register { 840cf::player->attach (
560 my ($base, $pkg) = @_; 841 on_command => sub {
842 my ($pl, $name, $params) = @_;
561 843
562 #TODO 844 my $cb = $COMMAND{$name}
563} 845 or return;
846
847 for my $cmd (@$cb) {
848 $cmd->[1]->($pl->ob, $params);
849 }
850
851 cf::override;
852 },
853 on_extcmd => sub {
854 my ($pl, $buf) = @_;
855
856 my $msg = eval { from_json $buf };
857
858 if (ref $msg) {
859 if (my $cb = $EXTCMD{$msg->{msgtype}}) {
860 if (my %reply = $cb->($pl, $msg)) {
861 $pl->ext_reply ($msg->{msgid}, %reply);
862 }
863 }
864 } else {
865 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
866 }
867
868 cf::override;
869 },
870);
564 871
565sub load_extension { 872sub load_extension {
566 my ($path) = @_; 873 my ($path) = @_;
567 874
568 $path =~ /([^\/\\]+)\.ext$/ or die "$path"; 875 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
569 my $base = $1; 876 my $base = $1;
570 my $pkg = $1; 877 my $pkg = $1;
571 $pkg =~ s/[^[:word:]]/_/g; 878 $pkg =~ s/[^[:word:]]/_/g;
572 $pkg = "ext::$pkg"; 879 $pkg = "ext::$pkg";
573 880
574 warn "loading '$path' into '$pkg'\n"; 881 warn "... loading '$path' into '$pkg'\n";
575 882
576 open my $fh, "<:utf8", $path 883 open my $fh, "<:utf8", $path
577 or die "$path: $!"; 884 or die "$path: $!";
578 885
579 my $source = 886 my $source =
580 "package $pkg; use strict; use utf8;\n" 887 "package $pkg; use strict; use utf8;\n"
581 . "#line 1 \"$path\"\n{\n" 888 . "#line 1 \"$path\"\n{\n"
582 . (do { local $/; <$fh> }) 889 . (do { local $/; <$fh> })
583 . "\n};\n1"; 890 . "\n};\n1";
584 891
585 eval $source 892 unless (eval $source) {
586 or die "$path: $@"; 893 my $msg = $@ ? "$path: $@\n"
587 894 : "extension disabled.\n";
588 push @exts, $pkg; 895 if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
589 $ext_pkg{$base} = $pkg; 896 warn $@;
590 897 warn "mandatory extension failed to load, exiting.\n";
591# no strict 'refs'; 898 exit 1;
592# @{"$pkg\::ISA"} = ext::; 899 }
593 900 die $@;
594 register $base, $pkg;
595}
596
597sub unload_extension {
598 my ($pkg) = @_;
599
600 warn "removing extension $pkg\n";
601
602 # remove hooks
603 #TODO
604# for my $idx (0 .. $#PLUGIN_EVENT) {
605# delete $hook[$idx]{$pkg};
606# } 901 }
607 902
608 # remove commands 903 push @EXTS, $pkg;
609 for my $name (keys %command) {
610 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
611
612 if (@cb) {
613 $command{$name} = \@cb;
614 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615 } else {
616 delete $command{$name};
617 delete $COMMAND{"$name\000"};
618 }
619 }
620
621 # remove extcmds
622 for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
623 delete $extcmd{$name};
624 }
625
626 if (my $cb = $pkg->can ("unload")) {
627 eval {
628 $cb->($pkg);
629 1
630 } or warn "$pkg unloaded, but with errors: $@";
631 }
632
633 Symbol::delete_package $pkg;
634} 904}
635 905
636sub load_extensions { 906sub load_extensions {
637 my $LIBDIR = maps_directory "perl";
638
639 for my $ext (<$LIBDIR/*.ext>) { 907 for my $ext (<$LIBDIR/*.ext>) {
640 next unless -r $ext; 908 next unless -r $ext;
641 eval { 909 eval {
642 load_extension $ext; 910 load_extension $ext;
643 1 911 1
644 } or warn "$ext not loaded: $@"; 912 } or warn "$ext not loaded: $@";
645 } 913 }
646} 914}
647 915
648############################################################################# 916#############################################################################
649# extcmd framework, basically convert ext <msg>
650# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
651 917
652attach_to_players 918=head2 CORE EXTENSIONS
653 on_extcmd => sub {
654 my ($pl, $buf) = @_;
655 919
656 my $msg = eval { from_json $buf }; 920Functions and methods that extend core crossfire objects.
657 921
658 if (ref $msg) { 922=cut
659 if (my $cb = $extcmd{$msg->{msgtype}}) { 923
660 if (my %reply = $cb->[0]->($pl, $msg)) { 924package cf::player;
661 $pl->ext_reply ($msg->{msgid}, %reply); 925
662 } 926use Coro::AIO;
927
928=head3 cf::player
929
930=over 4
931
932=item cf::player::find $login
933
934Returns the given player object, loading it if necessary (might block).
935
936=cut
937
938sub playerdir($) {
939 cf::localdir
940 . "/"
941 . cf::playerdir
942 . "/"
943 . (ref $_[0] ? $_[0]->ob->name : $_[0])
944}
945
946sub path($) {
947 my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
948
949 (playerdir $login) . "/$login.pl"
950}
951
952sub find_active($) {
953 $cf::PLAYER{$_[0]}
954 and $cf::PLAYER{$_[0]}->active
955 and $cf::PLAYER{$_[0]}
956}
957
958sub exists($) {
959 my ($login) = @_;
960
961 $cf::PLAYER{$login}
962 or cf::sync_job { !aio_stat $login }
963}
964
965sub find($) {
966 return $cf::PLAYER{$_[0]} || do {
967 my $login = $_[0];
968
969 my $guard = cf::lock_acquire "user_find:$login";
970
971 $cf::PLAYER{$_[0]} || do {
972 my $pl = load_pl path $login
973 or return;
974 $cf::PLAYER{$login} = $pl
663 } 975 }
664 } else {
665 warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
666 }
667
668 cf::override;
669 }, 976 }
670; 977}
671 978
672############################################################################# 979sub save($) {
673# load/save/clean perl data associated with a map 980 my ($pl) = @_;
674 981
675*cf::mapsupport::on_clean = sub { 982 return if $pl->{deny_save};
983
984 my $path = path $pl;
985 my $guard = cf::lock_acquire "user_save:$path";
986
987 return if $pl->{deny_save};
988
989 aio_mkdir playerdir $pl, 0770;
990 $pl->{last_save} = $cf::RUNTIME;
991
992 $pl->save_pl ($path);
993 Coro::cede;
994}
995
996sub new($) {
997 my ($login) = @_;
998
999 my $self = create;
1000
1001 $self->ob->name ($login);
1002 $self->{deny_save} = 1;
1003
1004 $cf::PLAYER{$login} = $self;
1005
1006 $self
1007}
1008
1009=item $pl->quit_character
1010
1011Nukes the player without looking back. If logged in, the connection will
1012be destroyed. May block for a long time.
1013
1014=cut
1015
1016sub quit_character {
1017 my ($pl) = @_;
1018
1019 $pl->{deny_save} = 1;
1020 $pl->password ("*"); # this should lock out the player until we nuked the dir
1021
1022 $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1023 $pl->deactivate;
1024 $pl->invoke (cf::EVENT_PLAYER_QUIT);
1025 $pl->ns->destroy if $pl->ns;
1026
1027 my $path = playerdir $pl;
1028 my $temp = "$path~$cf::RUNTIME~deleting~";
1029 aio_rename $path, $temp;
1030 delete $cf::PLAYER{$pl->ob->name};
1031 $pl->destroy;
1032 IO::AIO::aio_rmtree $temp;
1033}
1034
1035=item cf::player::list_logins
1036
1037Returns am arrayref of all valid playernames in the system, can take a
1038while and may block, so not sync_job-capable, ever.
1039
1040=cut
1041
1042sub list_logins {
1043 my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
1044 or return [];
1045
1046 my @logins;
1047
1048 for my $login (@$dirs) {
1049 my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
1050 aio_read $fh, 0, 512, my $buf, 0 or next;
1051 $buf !~ /^password -------------$/m or next; # official not-valid tag
1052
1053 utf8::decode $login;
1054 push @logins, $login;
1055 }
1056
1057 \@logins
1058}
1059
1060=item $player->maps
1061
1062Returns an arrayref of map paths that are private for this
1063player. May block.
1064
1065=cut
1066
1067sub maps($) {
1068 my ($pl) = @_;
1069
1070 my $files = aio_readdir playerdir $pl
1071 or return;
1072
1073 my @paths;
1074
1075 for (@$files) {
1076 utf8::decode $_;
1077 next if /\.(?:pl|pst)$/;
1078 next unless /^$PATH_SEP/o;
1079
1080 s/\.map$//;
1081 push @paths, "~" . $pl->ob->name . "/" . $_;
1082 }
1083
1084 \@paths
1085}
1086
1087=item $player->ext_reply ($msgid, $msgtype, %msg)
1088
1089Sends an ext reply to the player.
1090
1091=cut
1092
1093sub ext_reply($$$%) {
1094 my ($self, $id, %msg) = @_;
1095
1096 $msg{msgid} = $id;
1097
1098 $self->send ("ext " . cf::to_json \%msg);
1099}
1100
1101package cf;
1102
1103=back
1104
1105
1106=head3 cf::map
1107
1108=over 4
1109
1110=cut
1111
1112package cf::map;
1113
1114use Fcntl;
1115use Coro::AIO;
1116
1117use overload
1118 '""' => \&as_string;
1119
1120our $MAX_RESET = 3600;
1121our $DEFAULT_RESET = 3000;
1122
1123sub generate_random_map {
1124 my ($self, $rmp) = @_;
1125
1126 # mit "rum" bekleckern, nicht
1127 $self->_create_random_map (
1128 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1129 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1130 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1131 $rmp->{exit_on_final_map},
1132 $rmp->{xsize}, $rmp->{ysize},
1133 $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1134 $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1135 $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1136 $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1137 $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1138 (cf::region::find $rmp->{region}), $rmp->{custom}
1139 )
1140}
1141
1142sub register {
1143 my (undef, $regex) = @_;
1144 my $pkg = caller;
1145
1146 no strict;
1147 push @{"$pkg\::ISA"}, __PACKAGE__;
1148
1149 $EXT_MAP{$pkg} = qr<$regex>;
1150}
1151
1152# also paths starting with '/'
1153$EXT_MAP{"cf::map"} = qr{^(?=/)};
1154
1155sub thawer_merge {
1156 # we have to keep some variables in memory intact
1157 local $_[0]{path};
1158 local $_[0]{deny_save};
1159 local $_[0]{deny_reset};
1160
1161 $_[0]->SUPER::thawer_merge ($_[1]);
1162}
1163
1164sub normalise {
1165 my ($path, $base) = @_;
1166
1167 # map plan:
1168 #
1169 # /! non-realised random map exit (special hack!)
1170 # {... are special paths that are not being touched
1171 # ?xxx/... are special absolute paths
1172 # ?random/... random maps
1173 # /... normal maps
1174 # ~user/... per-player map of a specific user
1175
1176 $path =~ s/$PATH_SEP/\//go;
1177
1178 # treat it as relative path if it starts with
1179 # something that looks reasonable
1180 if ($path =~ m{^(?:\./|\.\./|\w)}) {
1181 $base or Carp::carp "normalise called with relative path and no base: '$path'";
1182
1183 $base =~ s{[^/]+/?$}{};
1184 $path = "$base/$path";
1185 }
1186
1187 for ($path) {
1188 redo if s{//}{/};
1189 redo if s{/\.?/}{/};
1190 redo if s{/[^/]+/\.\./}{/};
1191 }
1192
1193 $path
1194}
1195
1196sub new_from_path {
1197 my (undef, $path, $base) = @_;
1198
1199 return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
1200
1201 $path = normalise $path, $base;
1202
1203 for my $pkg (keys %EXT_MAP) {
1204 if ($path =~ $EXT_MAP{$pkg}) {
1205 my $self = bless cf::map::new, $pkg;
1206 $self->{path} = $path; $self->path ($path);
1207 $self->init; # pass $1 etc.
1208 return $self;
1209 }
1210 }
1211
1212 Carp::carp "unable to resolve path '$path'.";
1213 ()
1214}
1215
1216sub init {
1217 my ($self) = @_;
1218
1219 $self
1220}
1221
1222sub as_string {
1223 my ($self) = @_;
1224
1225 "$self->{path}"
1226}
1227
1228# the displayed name, this is a one way mapping
1229sub visible_name {
1230 &as_string
1231}
1232
1233# the original (read-only) location
1234sub load_path {
1235 my ($self) = @_;
1236
1237 sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
1238}
1239
1240# the temporary/swap location
1241sub save_path {
1242 my ($self) = @_;
1243
1244 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1245 sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
1246}
1247
1248# the unique path, undef == no special unique path
1249sub uniq_path {
1250 my ($self) = @_;
1251
1252 (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
1253 sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
1254}
1255
1256# and all this just because we cannot iterate over
1257# all maps in C++...
1258sub change_all_map_light {
1259 my ($change) = @_;
1260
1261 $_->change_map_light ($change)
1262 for grep $_->outdoor, values %cf::MAP;
1263}
1264
1265sub unlink_save {
1266 my ($self) = @_;
1267
1268 utf8::encode (my $save = $self->save_path);
1269 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1270 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1271}
1272
1273sub load_header_from($) {
1274 my ($self, $path) = @_;
1275
1276 utf8::encode $path;
1277 aio_open $path, O_RDONLY, 0
1278 or return;
1279
1280 $self->_load_header ($path)
1281 or return;
1282
1283 $self->{load_path} = $path;
1284
1285 1
1286}
1287
1288sub load_orig {
1289 my ($self) = @_;
1290
1291 $self->load_header_from ($self->load_path)
1292}
1293
1294sub load_temp {
1295 my ($self) = @_;
1296
1297 $self->load_header_from ($self->save_path)
1298}
1299
1300sub load_header {
1301 my ($self) = @_;
1302
1303 if ($self->load_temp) {
1304 $self->last_access ((delete $self->{last_access})
1305 || $cf::RUNTIME); #d#
1306 # safety
1307 $self->{instantiate_time} = $cf::RUNTIME
1308 if $self->{instantiate_time} > $cf::RUNTIME;
1309 } else {
1310 $self->load_orig
1311 or return;
1312
1313 $self->{load_original} = 1;
1314 $self->{instantiate_time} = $cf::RUNTIME;
1315 $self->last_access ($cf::RUNTIME);
1316 $self->instantiate;
1317 }
1318
1319 1
1320}
1321
1322sub find;
1323sub find {
1324 my ($path, $origin) = @_;
1325
1326 $path = normalise $path, $origin && $origin->path;
1327
1328 cf::lock_wait "map_find:$path";
1329
1330 $cf::MAP{$path} || do {
1331 my $guard = cf::lock_acquire "map_find:$path";
1332 my $map = new_from_path cf::map $path
1333 or return;
1334
1335 $map->{last_save} = $cf::RUNTIME;
1336
1337 $map->load_header
1338 or return;
1339
1340 if ($map->should_reset) {
1341 $cf::WAIT_FOR_TICK->wait;
1342 $map->reset;
1343 undef $guard;
1344 $map = find $path
1345 or return;
1346 }
1347
1348 $cf::MAP{$path} = $map
1349 }
1350}
1351
1352sub load {
1353 my ($self) = @_;
1354
1355 my $path = $self->{path};
1356 my $guard = cf::lock_acquire "map_load:$path";
1357
1358 return if $self->in_memory != cf::MAP_SWAPPED;
1359
1360 $self->in_memory (cf::MAP_LOADING);
1361
1362 $self->alloc;
1363 $self->_load_objects ($self->{load_path}, 1)
1364 or return;
1365
1366 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1367 if delete $self->{load_original};
1368
1369 if (my $uniq = $self->uniq_path) {
1370 utf8::encode $uniq;
1371 if (aio_open $uniq, O_RDONLY, 0) {
1372 $self->clear_unique_items;
1373 $self->_load_objects ($uniq, 0);
1374 }
1375 }
1376
1377 Coro::cede;
1378
1379 # now do the right thing for maps
1380 $self->link_multipart_objects;
1381
1382 unless ($self->{deny_activate}) {
1383 $self->decay_objects;
1384 $self->fix_auto_apply;
1385 $self->update_buttons;
1386 Coro::cede;
1387 $self->set_darkness_map;
1388 $self->difficulty ($self->estimate_difficulty)
1389 unless $self->difficulty;
1390 Coro::cede;
1391 $self->activate;
1392 }
1393
1394 $self->in_memory (cf::MAP_IN_MEMORY);
1395}
1396
1397sub customise_for {
1398 my ($self, $ob) = @_;
1399
1400 return find "~" . $ob->name . "/" . $self->{path}
1401 if $self->per_player;
1402
1403 $self
1404}
1405
1406# find and load all maps in the 3x3 area around a map
1407sub load_diag {
676 my ($map) = @_; 1408 my ($map) = @_;
677 1409
678 my $path = $map->tmpname; 1410 my @diag; # diagonal neighbours
679 defined $path or return;
680 1411
681 unlink "$path.pst"; 1412 for (0 .. 3) {
1413 my $neigh = $map->tile_path ($_)
1414 or next;
1415 $neigh = find $neigh, $map
1416 or next;
1417 $neigh->load;
1418
1419 push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
1420 [$neigh->tile_path (($_ + 1) % 4), $neigh];
1421 }
1422
1423 for (@diag) {
1424 my $neigh = find @$_
1425 or next;
1426 $neigh->load;
1427 }
1428}
1429
1430sub find_sync {
1431 my ($path, $origin) = @_;
1432
1433 cf::sync_job { find $path, $origin }
1434}
1435
1436sub do_load_sync {
1437 my ($map) = @_;
1438
1439 cf::sync_job { $map->load };
1440}
1441
1442our %MAP_PREFETCH;
1443our $MAP_PREFETCHER = Coro::async {
1444 while () {
1445 for my $path (keys %MAP_PREFETCH) {
1446 my $map = find $path
1447 or next;
1448 $map->load;
1449
1450 delete $MAP_PREFETCH{$path};
1451 }
1452 Coro::schedule;
1453 }
682}; 1454};
683 1455
684attach_to_maps prio => -10000, package => cf::mapsupport::; 1456sub find_async {
1457 my ($path, $origin) = @_;
685 1458
686############################################################################# 1459 $path = normalise $path, $origin && $origin->{path};
687# load/save perl data associated with player->ob objects
688 1460
689sub all_objects(@) { 1461 if (my $map = $cf::MAP{$path}) {
690 @_, map all_objects ($_->inv), @_ 1462 return $map if $map->in_memory == cf::MAP_IN_MEMORY;
691}
692
693# TODO: compatibility cruft, remove when no longer needed
694attach_to_players
695 on_load => sub {
696 my ($pl, $path) = @_;
697
698 for my $o (all_objects $pl->ob) {
699 if (my $value = $o->get_ob_key_value ("_perl_data")) {
700 $o->set_ob_key_value ("_perl_data");
701
702 %$o = %{ Storable::thaw pack "H*", $value };
703 }
704 }
705 }, 1463 }
706;
707 1464
708############################################################################# 1465 $MAP_PREFETCH{$path} = 0;
709# core extensions - in perl 1466 $MAP_PREFETCHER->ready;
710 1467
711=item cf::player::exists $login 1468 ()
712
713Returns true when the given account exists.
714
715=cut
716
717sub cf::player::exists($) {
718 cf::player::find $_[0]
719 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
720} 1469}
721 1470
1471sub save {
1472 my ($self) = @_;
1473
1474 my $lock = cf::lock_acquire "map_data:" . $self->path;
1475
1476 $self->{last_save} = $cf::RUNTIME;
1477
1478 return unless $self->dirty;
1479
1480 my $save = $self->save_path; utf8::encode $save;
1481 my $uniq = $self->uniq_path; utf8::encode $uniq;
1482
1483 $self->{load_path} = $save;
1484
1485 return if $self->{deny_save};
1486
1487 local $self->{last_access} = $self->last_access;#d#
1488
1489 cf::async {
1490 $_->contr->save for $self->players;
1491 };
1492
1493 if ($uniq) {
1494 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1495 $self->_save_objects ($uniq, cf::IO_UNIQUES);
1496 } else {
1497 $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1498 }
1499}
1500
1501sub swap_out {
1502 my ($self) = @_;
1503
1504 # save first because save cedes
1505 $self->save;
1506
1507 my $lock = cf::lock_acquire "map_data:" . $self->path;
1508
1509 return if $self->players;
1510 return if $self->in_memory != cf::MAP_IN_MEMORY;
1511 return if $self->{deny_save};
1512
1513 $self->clear;
1514 $self->in_memory (cf::MAP_SWAPPED);
1515}
1516
1517sub reset_at {
1518 my ($self) = @_;
1519
1520 # TODO: safety, remove and allow resettable per-player maps
1521 return 1e99 if $self->isa ("ext::map_per_player");#d#
1522 return 1e99 if $self->{deny_reset};
1523
1524 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1525 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1526
1527 $time + $to
1528}
1529
1530sub should_reset {
1531 my ($self) = @_;
1532
1533 $self->reset_at <= $cf::RUNTIME
1534}
1535
1536sub rename {
1537 my ($self, $new_path) = @_;
1538
1539 normalise $new_path;
1540
1541 $self->unlink_save;
1542
1543 delete $cf::MAP{$self->path};
1544 $self->{path} = $new_path; $self->path ($self->{path});
1545 $cf::MAP{$self->path} = $self;
1546
1547 $self->save;
1548}
1549
1550sub reset {
1551 my ($self) = @_;
1552
1553 my $lock = cf::lock_acquire "map_data:$self->{path}";
1554
1555 return if $self->players;
1556 return if $self->isa ("ext::map_per_player");#d#
1557
1558 warn "resetting map ", $self->path;#d#
1559
1560 delete $cf::MAP{$self->path};
1561
1562 $self->in_memory (cf::MAP_SWAPPED);
1563 $self->clear;
1564
1565 $_->clear_links_to ($self) for values %cf::MAP;
1566
1567 $self->unlink_save;
1568 $self->destroy;
1569}
1570
1571my $nuke_counter = "aaaa";
1572
1573sub nuke {
1574 my ($self) = @_;
1575
1576 $self->{deny_save} = 1;
1577 $self->reset_timeout (1);
1578 $self->rename ("{nuke}/" . ($nuke_counter++));
1579 $self->reset; # polite request, might not happen
1580}
1581
1582=item cf::map::unique_maps
1583
1584Returns an arrayref of paths of all shared maps that have
1585instantiated unique items. May block.
1586
1587=cut
1588
1589sub unique_maps() {
1590 my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
1591 or return;
1592
1593 my @paths;
1594
1595 for (@$files) {
1596 utf8::decode $_;
1597 next if /\.pst$/;
1598 next unless /^$PATH_SEP/o;
1599
1600 s/\.map$//;
1601 push @paths, $_;
1602 }
1603
1604 \@paths
1605}
1606
1607package cf;
1608
1609=back
1610
1611=head3 cf::object
1612
1613=cut
1614
1615package cf::object;
1616
1617=over 4
1618
1619=item $ob->inv_recursive
1620
1621Returns the inventory of the object _and_ their inventories, recursively.
1622
1623=cut
1624
1625sub inv_recursive_;
1626sub inv_recursive_ {
1627 map { $_, inv_recursive_ $_->inv } @_
1628}
1629
1630sub inv_recursive {
1631 inv_recursive_ inv $_[0]
1632}
1633
1634package cf;
1635
1636=back
1637
1638=head3 cf::object::player
1639
1640=over 4
1641
722=item $player->reply ($npc, $msg[, $flags]) 1642=item $player_object->reply ($npc, $msg[, $flags])
723 1643
724Sends a message to the player, as if the npc C<$npc> replied. C<$npc> 1644Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
725can be C<undef>. Does the right thing when the player is currently in a 1645can be C<undef>. Does the right thing when the player is currently in a
726dialogue with the given NPC character. 1646dialogue with the given NPC character.
727 1647
728=cut 1648=cut
729 1649
730# rough implementation of a future "reply" method that works 1650# rough implementation of a future "reply" method that works
731# with dialog boxes. 1651# with dialog boxes.
1652#TODO: the first argument must go, split into a $npc->reply_to ( method
732sub cf::object::player::reply($$$;$) { 1653sub cf::object::player::reply($$$;$) {
733 my ($self, $npc, $msg, $flags) = @_; 1654 my ($self, $npc, $msg, $flags) = @_;
734 1655
735 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4; 1656 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
736 1657
740 $msg = $npc->name . " says: $msg" if $npc; 1661 $msg = $npc->name . " says: $msg" if $npc;
741 $self->message ($msg, $flags); 1662 $self->message ($msg, $flags);
742 } 1663 }
743} 1664}
744 1665
745=item $player->ext_reply ($msgid, $msgtype, %msg) 1666=item $player_object->may ("access")
746 1667
747Sends an ext reply to the player. 1668Returns wether the given player is authorized to access resource "access"
1669(e.g. "command_wizcast").
748 1670
749=cut 1671=cut
750 1672
751sub cf::player::ext_reply($$$%) { 1673sub cf::object::player::may {
1674 my ($self, $access) = @_;
1675
1676 $self->flag (cf::FLAG_WIZ) ||
1677 (ref $cf::CFG{"may_$access"}
1678 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1679 : $cf::CFG{"may_$access"})
1680}
1681
1682=item $player_object->enter_link
1683
1684Freezes the player and moves him/her to a special map (C<{link}>).
1685
1686The player should be reasonably safe there for short amounts of time. You
1687I<MUST> call C<leave_link> as soon as possible, though.
1688
1689Will never block.
1690
1691=item $player_object->leave_link ($map, $x, $y)
1692
1693Moves the player out of the special C<{link}> map onto the specified
1694map. If the map is not valid (or omitted), the player will be moved back
1695to the location he/she was before the call to C<enter_link>, or, if that
1696fails, to the emergency map position.
1697
1698Might block.
1699
1700=cut
1701
1702sub link_map {
1703 unless ($LINK_MAP) {
1704 $LINK_MAP = cf::map::find "{link}"
1705 or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
1706 $LINK_MAP->load;
1707 }
1708
1709 $LINK_MAP
1710}
1711
1712sub cf::object::player::enter_link {
1713 my ($self) = @_;
1714
1715 $self->deactivate_recursive;
1716
1717 return if UNIVERSAL::isa $self->map, "ext::map_link";
1718
1719 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1720 if $self->map;
1721
1722 $self->enter_map ($LINK_MAP || link_map, 20, 20);
1723}
1724
1725sub cf::object::player::leave_link {
1726 my ($self, $map, $x, $y) = @_;
1727
1728 my $link_pos = delete $self->{_link_pos};
1729
1730 unless ($map) {
1731 # restore original map position
1732 ($map, $x, $y) = @{ $link_pos || [] };
1733 $map = cf::map::find $map;
1734
1735 unless ($map) {
1736 ($map, $x, $y) = @$EMERGENCY_POSITION;
1737 $map = cf::map::find $map
1738 or die "FATAL: cannot load emergency map\n";
1739 }
1740 }
1741
1742 ($x, $y) = (-1, -1)
1743 unless (defined $x) && (defined $y);
1744
1745 # use -1 or undef as default coordinates, not 0, 0
1746 ($x, $y) = ($map->enter_x, $map->enter_y)
1747 if $x <=0 && $y <= 0;
1748
1749 $map->load;
1750 $map->load_diag;
1751
1752 return unless $self->contr->active;
1753 $self->activate_recursive;
1754 $self->enter_map ($map, $x, $y);
1755}
1756
1757cf::player->attach (
1758 on_logout => sub {
1759 my ($pl) = @_;
1760
1761 # abort map switching before logout
1762 if ($pl->ob->{_link_pos}) {
1763 cf::sync_job {
1764 $pl->ob->leave_link
1765 };
1766 }
1767 },
1768 on_login => sub {
1769 my ($pl) = @_;
1770
1771 # try to abort aborted map switching on player login :)
1772 # should happen only on crashes
1773 if ($pl->ob->{_link_pos}) {
1774 $pl->ob->enter_link;
1775 (async {
1776 # we need this sleep as the login has a concurrent enter_exit running
1777 # and this sleep increases chances of the player not ending up in scorn
1778 $pl->ob->reply (undef,
1779 "There was an internal problem at your last logout, "
1780 . "the server will try to bring you to your intended destination in a second.",
1781 cf::NDI_RED);
1782 Coro::Timer::sleep 1;
1783 $pl->ob->leave_link;
1784 })->prio (2);
1785 }
1786 },
1787);
1788
1789=item $player_object->goto ($path, $x, $y)
1790
1791=cut
1792
1793sub cf::object::player::goto {
1794 my ($self, $path, $x, $y) = @_;
1795
1796 $self->enter_link;
1797
1798 (async {
1799 my $map = cf::map::find $path;
1800 $map = $map->customise_for ($self) if $map;
1801
1802# warn "entering ", $map->path, " at ($x, $y)\n"
1803# if $map;
1804
1805 $map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1806
1807 $self->leave_link ($map, $x, $y);
1808 })->prio (1);
1809}
1810
1811=item $player_object->enter_exit ($exit_object)
1812
1813=cut
1814
1815sub parse_random_map_params {
1816 my ($spec) = @_;
1817
1818 my $rmp = { # defaults
1819 xsize => 10,
1820 ysize => 10,
1821 };
1822
1823 for (split /\n/, $spec) {
1824 my ($k, $v) = split /\s+/, $_, 2;
1825
1826 $rmp->{lc $k} = $v if (length $k) && (length $v);
1827 }
1828
1829 $rmp
1830}
1831
1832sub prepare_random_map {
1833 my ($exit) = @_;
1834
1835 # all this does is basically replace the /! path by
1836 # a new random map path (?random/...) with a seed
1837 # that depends on the exit object
1838
1839 my $rmp = parse_random_map_params $exit->msg;
1840
1841 if ($exit->map) {
1842 $rmp->{region} = $exit->map->region_name;
1843 $rmp->{origin_map} = $exit->map->path;
1844 $rmp->{origin_x} = $exit->x;
1845 $rmp->{origin_y} = $exit->y;
1846 }
1847
1848 $rmp->{random_seed} ||= $exit->random_seed;
1849
1850 my $data = cf::to_json $rmp;
1851 my $md5 = Digest::MD5::md5_hex $data;
1852
1853 if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
1854 aio_write $fh, 0, (length $data), $data, 0;
1855
1856 $exit->slaying ("?random/$md5");
1857 $exit->msg (undef);
1858 }
1859}
1860
1861sub cf::object::player::enter_exit {
752 my ($self, $id, %msg) = @_; 1862 my ($self, $exit) = @_;
753 1863
754 $msg{msgid} = $id; 1864 return unless $self->type == cf::PLAYER;
755 1865
756 $self->send ("ext " . to_json \%msg); 1866 $self->enter_link;
757}
758 1867
759############################################################################# 1868 (async {
760# map scripting support 1869 $self->deactivate_recursive; # just to be sure
1870 unless (eval {
1871 prepare_random_map $exit
1872 if $exit->slaying eq "/!";
1873
1874 my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
1875 $self->goto ($path, $exit->stats->hp, $exit->stats->sp);
1876
1877 1;
1878 }) {
1879 $self->message ("Something went wrong deep within the crossfire server. "
1880 . "I'll try to bring you back to the map you were before. "
1881 . "Please report this to the dungeon master!",
1882 cf::NDI_UNIQUE | cf::NDI_RED);
1883
1884 warn "ERROR in enter_exit: $@";
1885 $self->leave_link;
1886 }
1887 })->prio (1);
1888}
1889
1890=head3 cf::client
1891
1892=over 4
1893
1894=item $client->send_drawinfo ($text, $flags)
1895
1896Sends a drawinfo packet to the client. Circumvents output buffering so
1897should not be used under normal circumstances.
1898
1899=cut
1900
1901sub cf::client::send_drawinfo {
1902 my ($self, $text, $flags) = @_;
1903
1904 utf8::encode $text;
1905 $self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
1906}
1907
1908
1909=item $success = $client->query ($flags, "text", \&cb)
1910
1911Queues a query to the client, calling the given callback with
1912the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
1913C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1914
1915Queries can fail, so check the return code. Or don't, as queries will become
1916reliable at some point in the future.
1917
1918=cut
1919
1920sub cf::client::query {
1921 my ($self, $flags, $text, $cb) = @_;
1922
1923 return unless $self->state == ST_PLAYING
1924 || $self->state == ST_SETUP
1925 || $self->state == ST_CUSTOM;
1926
1927 $self->state (ST_CUSTOM);
1928
1929 utf8::encode $text;
1930 push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1931
1932 $self->send_packet ($self->{query_queue}[0][0])
1933 if @{ $self->{query_queue} } == 1;
1934}
1935
1936cf::client->attach (
1937 on_reply => sub {
1938 my ($ns, $msg) = @_;
1939
1940 # this weird shuffling is so that direct followup queries
1941 # get handled first
1942 my $queue = delete $ns->{query_queue}
1943 or return; # be conservative, not sure how that can happen, but we saw a crash here
1944
1945 (shift @$queue)->[1]->($msg);
1946
1947 push @{ $ns->{query_queue} }, @$queue;
1948
1949 if (@{ $ns->{query_queue} } == @$queue) {
1950 if (@$queue) {
1951 $ns->send_packet ($ns->{query_queue}[0][0]);
1952 } else {
1953 $ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
1954 }
1955 }
1956 },
1957);
1958
1959=item $client->async (\&cb)
1960
1961Create a new coroutine, running the specified callback. The coroutine will
1962be automatically cancelled when the client gets destroyed (e.g. on logout,
1963or loss of connection).
1964
1965=cut
1966
1967sub cf::client::async {
1968 my ($self, $cb) = @_;
1969
1970 my $coro = &Coro::async ($cb);
1971
1972 $coro->on_destroy (sub {
1973 delete $self->{_coro}{$coro+0};
1974 });
1975
1976 $self->{_coro}{$coro+0} = $coro;
1977
1978 $coro
1979}
1980
1981cf::client->attach (
1982 on_destroy => sub {
1983 my ($ns) = @_;
1984
1985 $_->cancel for values %{ (delete $ns->{_coro}) || {} };
1986 },
1987);
1988
1989=back
1990
1991
1992=head2 SAFE SCRIPTING
1993
1994Functions that provide a safe environment to compile and execute
1995snippets of perl code without them endangering the safety of the server
1996itself. Looping constructs, I/O operators and other built-in functionality
1997is not available in the safe scripting environment, and the number of
1998functions and methods that can be called is greatly reduced.
1999
2000=cut
761 2001
762our $safe = new Safe "safe"; 2002our $safe = new Safe "safe";
763our $safe_hole = new Safe::Hole; 2003our $safe_hole = new Safe::Hole;
764 2004
765$SIG{FPE} = 'IGNORE'; 2005$SIG{FPE} = 'IGNORE';
766 2006
767$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time)); 2007$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
768 2008
769# here we export the classes and methods available to script code 2009# here we export the classes and methods available to script code
770 2010
2011=pod
2012
2013The following fucntions and emthods are available within a safe environment:
2014
2015 cf::object contr pay_amount pay_player map
2016 cf::object::player player
2017 cf::player peaceful
2018 cf::map trigger
2019
2020=cut
2021
771for ( 2022for (
772 ["cf::object" => qw(contr pay_amount pay_player)], 2023 ["cf::object" => qw(contr pay_amount pay_player map)],
773 ["cf::object::player" => qw(player)], 2024 ["cf::object::player" => qw(player)],
774 ["cf::player" => qw(peaceful)], 2025 ["cf::player" => qw(peaceful)],
2026 ["cf::map" => qw(trigger)],
775) { 2027) {
776 no strict 'refs'; 2028 no strict 'refs';
777 my ($pkg, @funs) = @$_; 2029 my ($pkg, @funs) = @$_;
778 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"}) 2030 *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
779 for @funs; 2031 for @funs;
780} 2032}
2033
2034=over 4
2035
2036=item @retval = safe_eval $code, [var => value, ...]
2037
2038Compiled and executes the given perl code snippet. additional var/value
2039pairs result in temporary local (my) scalar variables of the given name
2040that are available in the code snippet. Example:
2041
2042 my $five = safe_eval '$first + $second', first => 1, second => 4;
2043
2044=cut
781 2045
782sub safe_eval($;@) { 2046sub safe_eval($;@) {
783 my ($code, %vars) = @_; 2047 my ($code, %vars) = @_;
784 2048
785 my $qcode = $code; 2049 my $qcode = $code;
808 } 2072 }
809 2073
810 wantarray ? @res : $res[0] 2074 wantarray ? @res : $res[0]
811} 2075}
812 2076
2077=item cf::register_script_function $function => $cb
2078
2079Register a function that can be called from within map/npc scripts. The
2080function should be reasonably secure and should be put into a package name
2081like the extension.
2082
2083Example: register a function that gets called whenever a map script calls
2084C<rent::overview>, as used by the C<rent> extension.
2085
2086 cf::register_script_function "rent::overview" => sub {
2087 ...
2088 };
2089
2090=cut
2091
813sub register_script_function { 2092sub register_script_function {
814 my ($fun, $cb) = @_; 2093 my ($fun, $cb) = @_;
815 2094
816 no strict 'refs'; 2095 no strict 'refs';
817 *{"safe::$fun"} = $safe_hole->wrap ($cb); 2096 *{"safe::$fun"} = $safe_hole->wrap ($cb);
818} 2097}
2098
2099=back
2100
2101=cut
819 2102
820############################################################################# 2103#############################################################################
821 2104
822=head2 EXTENSION DATABASE SUPPORT 2105=head2 EXTENSION DATABASE SUPPORT
823 2106
858 2141
859Immediately write the database to disk I<if it is dirty>. 2142Immediately write the database to disk I<if it is dirty>.
860 2143
861=cut 2144=cut
862 2145
2146our $DB;
2147
863{ 2148{
864 my $db;
865 my $path = cf::datadir . "/database.pst"; 2149 my $path = cf::localdir . "/database.pst";
866 2150
867 sub db_load() { 2151 sub db_load() {
868 warn "loading database $path\n";#d# remove later
869 $db = stat $path ? Storable::retrieve $path : { }; 2152 $DB = stat $path ? Storable::retrieve $path : { };
870 } 2153 }
871 2154
872 my $pid; 2155 my $pid;
873 2156
874 sub db_save() { 2157 sub db_save() {
875 warn "saving database $path\n";#d# remove later
876 waitpid $pid, 0 if $pid; 2158 waitpid $pid, 0 if $pid;
877 unless ($pid = fork) { 2159 if (0 == ($pid = fork)) {
878 $db->{_meta}{version} = 1; 2160 $DB->{_meta}{version} = 1;
879 Storable::nstore $db, "$path~"; 2161 Storable::nstore $DB, "$path~";
880 rename "$path~", $path; 2162 rename "$path~", $path;
881 cf::_exit 0 if defined $pid; 2163 cf::_exit 0 if defined $pid;
882 } 2164 }
883 } 2165 }
884 2166
887 sub db_sync() { 2169 sub db_sync() {
888 db_save if $dirty; 2170 db_save if $dirty;
889 undef $dirty; 2171 undef $dirty;
890 } 2172 }
891 2173
892 my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub { 2174 my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
893 db_sync; 2175 db_sync;
894 }); 2176 });
895 2177
896 sub db_dirty() { 2178 sub db_dirty() {
897 $dirty = 1; 2179 $dirty = 1;
898 $idle->start; 2180 $idle->start;
899 } 2181 }
900 2182
901 sub db_get($;$) { 2183 sub db_get($;$) {
902 @_ >= 2 2184 @_ >= 2
903 ? $db->{$_[0]}{$_[1]} 2185 ? $DB->{$_[0]}{$_[1]}
904 : ($db->{$_[0]} ||= { }) 2186 : ($DB->{$_[0]} ||= { })
905 } 2187 }
906 2188
907 sub db_put($$;$) { 2189 sub db_put($$;$) {
908 if (@_ >= 3) { 2190 if (@_ >= 3) {
909 $db->{$_[0]}{$_[1]} = $_[2]; 2191 $DB->{$_[0]}{$_[1]} = $_[2];
910 } else { 2192 } else {
911 $db->{$_[0]} = $_[1]; 2193 $DB->{$_[0]} = $_[1];
912 } 2194 }
913 db_dirty; 2195 db_dirty;
914 } 2196 }
2197
2198 cf::global->attach (
2199 prio => 10000,
2200 on_cleanup => sub {
2201 db_sync;
2202 },
2203 );
915} 2204}
916 2205
917############################################################################# 2206#############################################################################
918# the server's main() 2207# the server's main()
919 2208
2209sub cfg_load {
2210 open my $fh, "<:utf8", cf::confdir . "/config"
2211 or return;
2212
2213 local $/;
2214 *CFG = YAML::Syck::Load <$fh>;
2215
2216 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2217
2218 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2219 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
2220
2221 if (exists $CFG{mlockall}) {
2222 eval {
2223 $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2224 and die "WARNING: m(un)lockall failed: $!\n";
2225 };
2226 warn $@ if $@;
2227 }
2228}
2229
920sub main { 2230sub main {
2231 # we must not ever block the main coroutine
2232 local $Coro::idle = sub {
2233 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2234 async { Event::one_event };
2235 };
2236
2237 cfg_load;
921 db_load; 2238 db_load;
922 load_extensions; 2239 load_extensions;
923 Event::loop; 2240 Event::loop;
924} 2241}
925 2242
926############################################################################# 2243#############################################################################
927# initialisation 2244# initialisation and cleanup
928 2245
2246# install some emergency cleanup handlers
2247BEGIN {
2248 for my $signal (qw(INT HUP TERM)) {
2249 Event->signal (
2250 data => WF_AUTOCANCEL,
2251 signal => $signal,
2252 cb => sub {
2253 cf::cleanup "SIG$signal";
2254 },
2255 );
2256 }
2257}
2258
2259sub emergency_save() {
2260 my $freeze_guard = cf::freeze_mainloop;
2261
2262 warn "enter emergency perl save\n";
2263
2264 cf::sync_job {
2265 # use a peculiar iteration method to avoid tripping on perl
2266 # refcount bugs in for. also avoids problems with players
2267 # and maps saved/destroyed asynchronously.
2268 warn "begin emergency player save\n";
2269 for my $login (keys %cf::PLAYER) {
2270 my $pl = $cf::PLAYER{$login} or next;
2271 $pl->valid or next;
2272 $pl->save;
2273 }
2274 warn "end emergency player save\n";
2275
2276 warn "begin emergency map save\n";
2277 for my $path (keys %cf::MAP) {
2278 my $map = $cf::MAP{$path} or next;
2279 $map->valid or next;
2280 $map->save;
2281 }
2282 warn "end emergency map save\n";
2283 };
2284
2285 warn "leave emergency perl save\n";
2286}
2287
929sub _perl_reload(&) { 2288sub reload() {
930 my ($msg) = @_; 2289 # can/must only be called in main
2290 if ($Coro::current != $Coro::main) {
2291 warn "can only reload from main coroutine\n";
2292 return;
2293 }
931 2294
932 $msg->("reloading..."); 2295 warn "reloading...";
2296
2297 warn "freezing server";
2298 my $guard = freeze_mainloop;
2299 cf::emergency_save;
2300
2301 warn "sync database to disk";
2302 cf::db_sync;
2303 IO::AIO::flush;
933 2304
934 eval { 2305 eval {
2306 # if anything goes wrong in here, we should simply crash as we already saved
2307
935 # cancel all watchers 2308 warn "cancel all watchers";
936 $_->cancel for Event::all_watchers; 2309 for (Event::all_watchers) {
2310 $_->cancel if $_->data & WF_AUTOCANCEL;
2311 }
937 2312
2313 warn "cancel all extension coros";
2314 $_->cancel for values %EXT_CORO;
2315 %EXT_CORO = ();
2316
2317 warn "remove commands";
2318 %COMMAND = ();
2319
2320 warn "remove ext commands";
2321 %EXTCMD = ();
2322
938 # unload all extensions 2323 warn "unload/nuke all extensions";
939 for (@exts) { 2324 for my $pkg (@EXTS) {
940 $msg->("unloading <$_>"); 2325 warn "... unloading $pkg";
941 unload_extension $_; 2326
2327 if (my $cb = $pkg->can ("unload")) {
2328 eval {
2329 $cb->($pkg);
2330 1
2331 } or warn "$pkg unloaded, but with errors: $@";
942 } 2332 }
943 2333
2334 warn "... nuking $pkg";
2335 Symbol::delete_package $pkg;
2336 }
2337
944 # unload all modules loaded from $LIBDIR 2338 warn "unload all perl modules loaded from $LIBDIR";
945 while (my ($k, $v) = each %INC) { 2339 while (my ($k, $v) = each %INC) {
946 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/; 2340 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
947 2341
948 $msg->("removing <$k>"); 2342 warn "removing <$k>";
949 delete $INC{$k}; 2343 delete $INC{$k};
950 2344
951 $k =~ s/\.pm$//; 2345 $k =~ s/\.pm$//;
952 $k =~ s/\//::/g; 2346 $k =~ s/\//::/g;
953 2347
956 } 2350 }
957 2351
958 Symbol::delete_package $k; 2352 Symbol::delete_package $k;
959 } 2353 }
960 2354
961 # sync database to disk
962 cf::db_sync;
963
964 # get rid of safe::, as good as possible 2355 warn "get rid of safe::, as good as possible";
965 Symbol::delete_package "safe::$_" 2356 Symbol::delete_package "safe::$_"
966 for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region); 2357 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
967 2358
968 # remove register_script_function callbacks
969 # TODO
970
971 # unload cf.pm "a bit" 2359 warn "unload cf.pm \"a bit\"";
972 delete $INC{"cf.pm"}; 2360 delete $INC{"cf.pm"};
973 2361
974 # don't, removes xs symbols, too, 2362 # don't, removes xs symbols, too,
975 # and global variables created in xs 2363 # and global variables created in xs
976 #Symbol::delete_package __PACKAGE__; 2364 #Symbol::delete_package __PACKAGE__;
977 2365
978 # reload cf.pm
979 $msg->("reloading cf.pm"); 2366 warn "reloading cf.pm";
980 require cf; 2367 require cf;
2368 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
981 2369
982 # load database again 2370 warn "load config and database again";
2371 cf::cfg_load;
983 cf::db_load; 2372 cf::db_load;
984 2373
985 # load extensions 2374 warn "load extensions";
986 $msg->("load extensions");
987 cf::load_extensions; 2375 cf::load_extensions;
988 2376
989 # reattach attachments to objects 2377 warn "reattach attachments to objects/players";
990 $msg->("reattach");
991 _global_reattach; 2378 _global_reattach;
2379 warn "reattach attachments to maps";
2380 reattach $_ for values %MAP;
992 }; 2381 };
993 $msg->($@) if $@;
994 2382
995 $msg->("reloaded"); 2383 if ($@) {
2384 warn $@;
2385 warn "error while reloading, exiting.";
2386 exit 1;
2387 }
2388
2389 warn "reloaded";
996}; 2390};
997 2391
998sub perl_reload() {
999 _perl_reload {
1000 warn $_[0];
1001 print "$_[0]\n";
1002 };
1003}
1004
1005register_command "perl-reload", 0, sub { 2392register_command "reload" => sub {
1006 my ($who, $arg) = @_; 2393 my ($who, $arg) = @_;
1007 2394
1008 if ($who->flag (FLAG_WIZ)) { 2395 if ($who->flag (FLAG_WIZ)) {
1009 _perl_reload { 2396 $who->message ("start of reload.");
1010 warn $_[0]; 2397 reload;
1011 $who->message ($_[0]); 2398 $who->message ("end of reload.");
1012 };
1013 } 2399 }
1014}; 2400};
1015 2401
1016register "<global>", __PACKAGE__;
1017
1018unshift @INC, $LIBDIR; 2402unshift @INC, $LIBDIR;
1019 2403
1020$TICK_WATCHER = Event->timer ( 2404$TICK_WATCHER = Event->timer (
2405 reentrant => 0,
1021 prio => 1, 2406 prio => 0,
1022 at => $NEXT_TICK || 1, 2407 at => $NEXT_TICK || $TICK,
2408 data => WF_AUTOCANCEL,
1023 cb => sub { 2409 cb => sub {
2410 $NOW = Event::time;
2411
1024 cf::server_tick; # one server iteration 2412 cf::server_tick; # one server iteration
1025 2413 $RUNTIME += $TICK;
1026 my $NOW = Event::time;
1027 $NEXT_TICK += $TICK; 2414 $NEXT_TICK += $TICK;
1028 2415
2416 $WAIT_FOR_TICK->broadcast;
2417 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
2418
1029 # if we are delayed by four ticks, skip them all 2419 # if we are delayed by four ticks or more, skip them all
1030 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4; 2420 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1031 2421
1032 $TICK_WATCHER->at ($NEXT_TICK); 2422 $TICK_WATCHER->at ($NEXT_TICK);
1033 $TICK_WATCHER->start; 2423 $TICK_WATCHER->start;
1034 }, 2424 },
1035); 2425);
1036 2426
2427IO::AIO::max_poll_time $TICK * 0.2;
2428
2429$AIO_POLL_WATCHER = Event->io (
2430 fd => IO::AIO::poll_fileno,
2431 poll => 'r',
2432 prio => 5,
2433 data => WF_AUTOCANCEL,
2434 cb => \&IO::AIO::poll_cb,
2435);
2436
2437$WRITE_RUNTIME_WATCHER = Event->timer (
2438 data => WF_AUTOCANCEL,
2439 after => 0,
2440 interval => 10,
2441 cb => sub {
2442 (Coro::unblock_sub {
2443 write_runtime
2444 or warn "ERROR: unable to write runtime file: $!";
2445 })->();
2446 },
2447);
2448
2449END { cf::emergency_save }
2450
10371 24511
1038 2452

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