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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.105 by root, Sun Dec 31 17:17:23 2006 UTC vs.
Revision 1.153 by root, Mon Jan 8 23:36:16 2007 UTC

8use Storable; 8use Storable;
9use Opcode; 9use Opcode;
10use Safe; 10use Safe;
11use Safe::Hole; 11use Safe::Hole;
12 12
13use Coro 3.3; 13use Coro 3.3 ();
14use Coro::Event; 14use Coro::Event;
15use Coro::Timer; 15use Coro::Timer;
16use Coro::Signal; 16use Coro::Signal;
17use Coro::Semaphore; 17use Coro::Semaphore;
18use Coro::AIO; 18use Coro::AIO;
19 19
20use Digest::MD5;
20use Fcntl; 21use Fcntl;
21use IO::AIO 2.31 (); 22use IO::AIO 2.32 ();
22use YAML::Syck (); 23use YAML::Syck ();
23use Time::HiRes; 24use Time::HiRes;
24 25
25use Event; $Event::Eval = 1; # no idea why this is required, but it is 26use Event; $Event::Eval = 1; # no idea why this is required, but it is
26 27
27# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode? 28# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
28$YAML::Syck::ImplicitUnicode = 1; 29$YAML::Syck::ImplicitUnicode = 1;
29 30
30$Coro::main->prio (2); # run main coroutine ("the server") with very high priority 31$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
31 32
32sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload 33sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
33 34
34our %COMMAND = (); 35our %COMMAND = ();
35our %COMMAND_TIME = (); 36our %COMMAND_TIME = ();
46our %CFG; 47our %CFG;
47 48
48our $UPTIME; $UPTIME ||= time; 49our $UPTIME; $UPTIME ||= time;
49our $RUNTIME; 50our $RUNTIME;
50 51
52our %PLAYER; # all users
51our %MAP; # all maps 53our %MAP; # all maps
52our $LINK_MAP; # the special {link} map 54our $LINK_MAP; # the special {link} map
53our $FREEZE; 55our $RANDOM_MAPS = cf::localdir . "/random";
56our %EXT_CORO; # coroutines bound to extensions
54 57
55binmode STDOUT; 58binmode STDOUT;
56binmode STDERR; 59binmode STDERR;
57 60
58# read virtual server time, if available 61# read virtual server time, if available
64 67
65mkdir cf::localdir; 68mkdir cf::localdir;
66mkdir cf::localdir . "/" . cf::playerdir; 69mkdir cf::localdir . "/" . cf::playerdir;
67mkdir cf::localdir . "/" . cf::tmpdir; 70mkdir cf::localdir . "/" . cf::tmpdir;
68mkdir cf::localdir . "/" . cf::uniquedir; 71mkdir cf::localdir . "/" . cf::uniquedir;
72mkdir $RANDOM_MAPS;
69 73
70our %EXT_CORO; 74# a special map that is always available
75our $LINK_MAP;
76our $EMERGENCY_POSITION;
71 77
72############################################################################# 78#############################################################################
73 79
74=head2 GLOBAL VARIABLES 80=head2 GLOBAL VARIABLES
75 81
112 utf8::encode $msg; 118 utf8::encode $msg;
113 119
114 $msg .= "\n" 120 $msg .= "\n"
115 unless $msg =~ /\n$/; 121 unless $msg =~ /\n$/;
116 122
117 LOG llevError, "cfperl: $msg"; 123 LOG llevError, $msg;
118 }; 124 };
119} 125}
120 126
121@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable'; 127@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
122@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable'; 128@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
174sub to_json($) { 180sub to_json($) {
175 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 181 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
176 JSON::Syck::Dump $_[0] 182 JSON::Syck::Dump $_[0]
177} 183}
178 184
179# main coro must never ever "block" except in Event 185=item cf::lock_wait $string
180# sync_job ensures this by running the job in a coroutine 186
181# and waiting in Event while the server is otherwise frozen 187Wait until the given lock is available. See cf::lock_acquire.
188
189=item my $lock = cf::lock_acquire $string
190
191Wait until the given lock is available and then acquires it and returns
192a Coro::guard object. If the guard object gets destroyed (goes out of scope,
193for example when the coroutine gets canceled), the lock is automatically
194returned.
195
196Lock names should begin with a unique identifier (for example, cf::map::find
197uses map_find and cf::map::load uses map_load).
198
199=cut
200
201our %LOCK;
202
203sub lock_wait($) {
204 my ($key) = @_;
205
206 # wait for lock, if any
207 while ($LOCK{$key}) {
208 push @{ $LOCK{$key} }, $Coro::current;
209 Coro::schedule;
210 }
211}
212
213sub lock_acquire($) {
214 my ($key) = @_;
215
216 # wait, to be sure we are not locked
217 lock_wait $key;
218
219 $LOCK{$key} = [];
220
221 Coro::guard {
222 # wake up all waiters, to be on the safe side
223 $_->ready for @{ delete $LOCK{$key} };
224 }
225}
226
227sub freeze_mainloop {
228 return unless $TICK_WATCHER->is_active;
229
230 my $guard = Coro::guard { $TICK_WATCHER->start };
231 $TICK_WATCHER->stop;
232 $guard
233}
234
235=item cf::async { BLOCK }
236
237Currently the same as Coro::async_pool, meaning you cannot use
238C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
239thing you are allowed to do is call C<prio> on it.
240
241=cut
242
243BEGIN { *async = \&Coro::async_pool }
244
245=item cf::sync_job { BLOCK }
246
247The design of crossfire+ requires that the main coro ($Coro::main) is
248always able to handle events or runnable, as crossfire+ is only partly
249reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
250
251If it must be done, put the blocking parts into C<sync_job>. This will run
252the given BLOCK in another coroutine while waiting for the result. The
253server will be frozen during this time, so the block should either finish
254fast or be very important.
255
256=cut
257
182sub sync_job(&) { 258sub sync_job(&) {
183 my ($job) = @_; 259 my ($job) = @_;
184 260
185 my $busy = 1;
186 my @res;
187
188 local $FREEZE = 1;
189
190 my $coro = Coro::async {
191 @res = eval { $job->() };
192 warn $@ if $@;
193 undef $busy;
194 };
195
196 if ($Coro::current == $Coro::main) { 261 if ($Coro::current == $Coro::main) {
262 # this is the main coro, too bad, we have to block
263 # till the operation succeeds, freezing the server :/
264
265 # TODO: use suspend/resume instead
266 # (but this is cancel-safe)
267 my $freeze_guard = freeze_mainloop;
268
269 my $busy = 1;
270 my @res;
271
272 (async {
273 @res = eval { $job->() };
274 warn $@ if $@;
275 undef $busy;
197 $coro->prio (Coro::PRIO_MAX); 276 })->prio (Coro::PRIO_MAX);
277
198 while ($busy) { 278 while ($busy) {
199 Coro::cede_notself; 279 Coro::cede or Event::one_event;
200 Event::one_event unless Coro::nready;
201 } 280 }
281
282 wantarray ? @res : $res[0]
202 } else { 283 } else {
203 $coro->join; 284 # we are in another coroutine, how wonderful, everything just works
285
286 $job->()
204 } 287 }
205
206 wantarray ? @res : $res[0]
207} 288}
208 289
209=item $coro = cf::coro { BLOCK } 290=item $coro = cf::async_ext { BLOCK }
210 291
211Creates and returns a new coro. This coro is automcatially being canceled 292Like async, but this coro is automcatially being canceled when the
212when the extension calling this is being unloaded. 293extension calling this is being unloaded.
213 294
214=cut 295=cut
215 296
216sub coro(&) { 297sub async_ext(&) {
217 my $cb = shift; 298 my $cb = shift;
218 299
219 my $coro; $coro = async { 300 my $coro = &Coro::async ($cb);
220 eval {
221 $cb->();
222 };
223 warn $@ if $@;
224 };
225 301
226 $coro->on_destroy (sub { 302 $coro->on_destroy (sub {
227 delete $EXT_CORO{$coro+0}; 303 delete $EXT_CORO{$coro+0};
228 }); 304 });
229 $EXT_CORO{$coro+0} = $coro; 305 $EXT_CORO{$coro+0} = $coro;
230 306
231 $coro 307 $coro
232} 308}
233 309
310sub write_runtime {
311 my $runtime = cf::localdir . "/runtime";
312
313 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
314 or return;
315
316 my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
317 (aio_write $fh, 0, (length $value), $value, 0) <= 0
318 and return;
319
320 aio_fsync $fh
321 and return;
322
323 close $fh
324 or return;
325
326 aio_rename "$runtime~", $runtime
327 and return;
328
329 1
330}
331
234=back 332=back
235 333
236=cut 334=cut
335
336#############################################################################
337
338package cf::path;
339
340sub new {
341 my ($class, $path, $base) = @_;
342
343 $path = $path->as_string if ref $path;
344
345 my $self = bless { }, $class;
346
347 # {... are special paths that are not touched
348 # ?xxx/... are special absolute paths
349 # ?random/... random maps
350 # /! non-realised random map exit
351 # /... normal maps
352 # ~/... per-player maps without a specific player (DO NOT USE)
353 # ~user/... per-player map of a specific user
354
355 if ($path =~ /^{/) {
356 # fine as it is
357 } elsif ($path =~ s{^\?random/}{}) {
358 Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
359 $self->{random} = cf::from_json $data;
360 } else {
361 if ($path =~ s{^~([^/]+)?}{}) {
362 $self->{user_rel} = 1;
363
364 if (defined $1) {
365 $self->{user} = $1;
366 } elsif ($base =~ m{^~([^/]+)/}) {
367 $self->{user} = $1;
368 } else {
369 warn "cannot resolve user-relative path without user <$path,$base>\n";
370 }
371 } elsif ($path =~ /^\//) {
372 # already absolute
373 } else {
374 $base =~ s{[^/]+/?$}{};
375 return $class->new ("$base/$path");
376 }
377
378 for ($path) {
379 redo if s{/\.?/}{/};
380 redo if s{/[^/]+/\.\./}{/};
381 }
382 }
383
384 $self->{path} = $path;
385
386 $self
387}
388
389# the name / primary key / in-game path
390sub as_string {
391 my ($self) = @_;
392
393 $self->{user_rel} ? "~$self->{user}$self->{path}"
394 : $self->{random} ? "?random/$self->{path}"
395 : $self->{path}
396}
397
398# the displayed name, this is a one way mapping
399sub visible_name {
400 my ($self) = @_;
401
402# if (my $rmp = $self->{random}) {
403# # todo: be more intelligent about this
404# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
405# } else {
406 $self->as_string
407# }
408}
409
410# escape the /'s in the path
411sub _escaped_path {
412 # ∕ is U+2215
413 (my $path = $_[0]{path}) =~ s/\//∕/g;
414 $path
415}
416
417# the original (read-only) location
418sub load_path {
419 my ($self) = @_;
420
421 sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
422}
423
424# the temporary/swap location
425sub save_path {
426 my ($self) = @_;
427
428 $self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
429 : $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
430 : sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
431}
432
433# the unique path, might be eq to save_path
434sub uniq_path {
435 my ($self) = @_;
436
437 $self->{user_rel} || $self->{random}
438 ? undef
439 : sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
440}
441
442# return random map parameters, or undef
443sub random_map_params {
444 my ($self) = @_;
445
446 $self->{random}
447}
448
449# this is somewhat ugly, but style maps do need special treatment
450sub is_style_map {
451 $_[0]{path} =~ m{^/styles/}
452}
453
454package cf;
237 455
238############################################################################# 456#############################################################################
239 457
240=head2 ATTACHABLE OBJECTS 458=head2 ATTACHABLE OBJECTS
241 459
649 or return; 867 or return;
650 868
651 unless (aio_stat "$filename.pst") { 869 unless (aio_stat "$filename.pst") {
652 (aio_load "$filename.pst", $av) >= 0 870 (aio_load "$filename.pst", $av) >= 0
653 or return; 871 or return;
654 $av = eval { (Storable::thaw <$av>)->{objs} }; 872 $av = eval { (Storable::thaw $av)->{objs} };
655 } 873 }
656 874
875 warn sprintf "loading %s (%d)\n",
876 $filename, length $data, scalar @{$av || []};#d#
657 return ($data, $av); 877 return ($data, $av);
658} 878}
659 879
660############################################################################# 880#############################################################################
661# command handling &c 881# command handling &c
852 1072
853=head2 CORE EXTENSIONS 1073=head2 CORE EXTENSIONS
854 1074
855Functions and methods that extend core crossfire objects. 1075Functions and methods that extend core crossfire objects.
856 1076
1077=cut
1078
1079package cf::player;
1080
857=head3 cf::player 1081=head3 cf::player
858 1082
859=over 4 1083=over 4
860 1084
861=item cf::player::exists $login 1085=item cf::player::find $login
862 1086
863Returns true when the given account exists. 1087Returns the given player object, loading it if necessary (might block).
864 1088
865=cut 1089=cut
866 1090
867sub cf::player::exists($) { 1091sub playerdir($) {
868 cf::player::find $_[0] 1092 cf::localdir
869 or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2; 1093 . "/"
1094 . cf::playerdir
1095 . "/"
1096 . (ref $_[0] ? $_[0]->ob->name : $_[0])
1097}
1098
1099sub path($) {
1100 my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
1101
1102 (playerdir $login) . "/$login.pl"
1103}
1104
1105sub find_active($) {
1106 $cf::PLAYER{$_[0]}
1107 and $cf::PLAYER{$_[0]}->active
1108 and $cf::PLAYER{$_[0]}
1109}
1110
1111sub exists($) {
1112 my ($login) = @_;
1113
1114 $cf::PLAYER{$login}
1115 or cf::sync_job { !aio_stat $login }
1116}
1117
1118sub find($) {
1119 return $cf::PLAYER{$_[0]} || do {
1120 my $login = $_[0];
1121
1122 my $guard = cf::lock_acquire "user_find:$login";
1123
1124 $cf::PLAYER{$_[0]} || do {
1125 my $pl = load_pl path $login
1126 or return;
1127 $cf::PLAYER{$login} = $pl
1128 }
1129 }
1130}
1131
1132sub save($) {
1133 my ($pl) = @_;
1134
1135 return if $pl->{deny_save};
1136
1137 my $path = path $pl;
1138 my $guard = cf::lock_acquire "user_save:$path";
1139
1140 return if $pl->{deny_save};
1141
1142 Coro::AIO::aio_mkdir playerdir $pl, 0770;
1143 $pl->{last_save} = $cf::RUNTIME;
1144
1145 $pl->save_pl ($path);
1146 Coro::cede;
1147}
1148
1149sub new($) {
1150 my ($login) = @_;
1151
1152 my $self = create;
1153
1154 $self->ob->name ($login);
1155 $self->{deny_save} = 1;
1156
1157 $cf::PLAYER{$login} = $self;
1158
1159 $self
1160}
1161
1162sub quit_character {
1163 my ($pl) = @_;
1164
1165 $pl->{deny_save} = 1;
1166 $pl->password ("*"); # this should lock out the player until we nuked the dir
1167
1168 $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1169 $pl->deactivate;
1170 $pl->invoke (cf::EVENT_PLAYER_QUIT);
1171 $pl->ns->destroy if $pl->ns;
1172
1173 my $path = playerdir $pl;
1174 my $temp = "$path~$cf::RUNTIME~deleting~";
1175 Coro::AIO::aio_rename $path, $temp;
1176 delete $cf::PLAYER{$pl->ob->name};
1177 $pl->destroy;
1178 IO::AIO::aio_rmtree $temp;
870} 1179}
871 1180
872=item $player->ext_reply ($msgid, $msgtype, %msg) 1181=item $player->ext_reply ($msgid, $msgtype, %msg)
873 1182
874Sends an ext reply to the player. 1183Sends an ext reply to the player.
875 1184
876=cut 1185=cut
877 1186
878sub cf::player::ext_reply($$$%) { 1187sub ext_reply($$$%) {
879 my ($self, $id, %msg) = @_; 1188 my ($self, $id, %msg) = @_;
880 1189
881 $msg{msgid} = $id; 1190 $msg{msgid} = $id;
882 1191
883 $self->send ("ext " . to_json \%msg); 1192 $self->send ("ext " . cf::to_json \%msg);
884} 1193}
1194
1195package cf;
885 1196
886=back 1197=back
1198
1199
1200=head3 cf::map
1201
1202=over 4
1203
1204=cut
1205
1206package cf::map;
1207
1208use Fcntl;
1209use Coro::AIO;
1210
1211our $MAX_RESET = 3600;
1212our $DEFAULT_RESET = 3000;
1213
1214sub generate_random_map {
1215 my ($path, $rmp) = @_;
1216
1217 # mit "rum" bekleckern, nicht
1218 cf::map::_create_random_map
1219 $path,
1220 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1221 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1222 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
1223 $rmp->{exit_on_final_map},
1224 $rmp->{xsize}, $rmp->{ysize},
1225 $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
1226 $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
1227 $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
1228 $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
1229 $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
1230 (cf::region::find $rmp->{region})
1231}
1232
1233# and all this just because we cannot iterate over
1234# all maps in C++...
1235sub change_all_map_light {
1236 my ($change) = @_;
1237
1238 $_->change_map_light ($change)
1239 for grep $_->outdoor, values %cf::MAP;
1240}
1241
1242sub try_load_header($) {
1243 my ($path) = @_;
1244
1245 utf8::encode $path;
1246 aio_open $path, O_RDONLY, 0
1247 or return;
1248
1249 my $map = cf::map::new
1250 or return;
1251
1252 # for better error messages only, will be overwritten
1253 $map->path ($path);
1254
1255 $map->load_header ($path)
1256 or return;
1257
1258 $map->{load_path} = $path;
1259
1260 $map
1261}
1262
1263sub find;
1264sub find {
1265 my ($path, $origin) = @_;
1266
1267 #warn "find<$path,$origin>\n";#d#
1268
1269 $path = new cf::path $path, $origin && $origin->path;
1270 my $key = $path->as_string;
1271
1272 cf::lock_wait "map_find:$key";
1273
1274 $cf::MAP{$key} || do {
1275 my $guard = cf::lock_acquire "map_find:$key";
1276
1277 # do it the slow way
1278 my $map = try_load_header $path->save_path;
1279
1280 Coro::cede;
1281
1282 if ($map) {
1283 $map->last_access ((delete $map->{last_access})
1284 || $cf::RUNTIME); #d#
1285 # safety
1286 $map->{instantiate_time} = $cf::RUNTIME
1287 if $map->{instantiate_time} > $cf::RUNTIME;
1288 } else {
1289 if (my $rmp = $path->random_map_params) {
1290 $map = generate_random_map $key, $rmp;
1291 } else {
1292 $map = try_load_header $path->load_path;
1293 }
1294
1295 $map or return;
1296
1297 $map->{load_original} = 1;
1298 $map->{instantiate_time} = $cf::RUNTIME;
1299 $map->last_access ($cf::RUNTIME);
1300 $map->instantiate;
1301
1302 # per-player maps become, after loading, normal maps
1303 $map->per_player (0) if $path->{user_rel};
1304 }
1305
1306 $map->path ($key);
1307 $map->{path} = $path;
1308 $map->{last_save} = $cf::RUNTIME;
1309
1310 Coro::cede;
1311
1312 if ($map->should_reset) {
1313 $map->reset;
1314 undef $guard;
1315 $map = find $path
1316 or return;
1317 }
1318
1319 $cf::MAP{$key} = $map
1320 }
1321}
1322
1323sub load {
1324 my ($self) = @_;
1325
1326 my $path = $self->{path};
1327 my $guard = cf::lock_acquire "map_load:" . $path->as_string;
1328
1329 return if $self->in_memory != cf::MAP_SWAPPED;
1330
1331 $self->in_memory (cf::MAP_LOADING);
1332
1333 $self->alloc;
1334 $self->load_objects ($self->{load_path}, 1)
1335 or return;
1336
1337 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1338 if delete $self->{load_original};
1339
1340 if (my $uniq = $path->uniq_path) {
1341 utf8::encode $uniq;
1342 if (aio_open $uniq, O_RDONLY, 0) {
1343 $self->clear_unique_items;
1344 $self->load_objects ($uniq, 0);
1345 }
1346 }
1347
1348 Coro::cede;
1349
1350 # now do the right thing for maps
1351 $self->link_multipart_objects;
1352
1353 if ($self->{path}->is_style_map) {
1354 $self->{deny_save} = 1;
1355 $self->{deny_reset} = 1;
1356 } else {
1357 $self->fix_auto_apply;
1358 $self->decay_objects;
1359 $self->update_buttons;
1360 $self->set_darkness_map;
1361 $self->difficulty ($self->estimate_difficulty)
1362 unless $self->difficulty;
1363 $self->activate;
1364 }
1365
1366 Coro::cede;
1367
1368 $self->in_memory (cf::MAP_IN_MEMORY);
1369}
1370
1371sub find_sync {
1372 my ($path, $origin) = @_;
1373
1374 cf::sync_job { cf::map::find $path, $origin }
1375}
1376
1377sub do_load_sync {
1378 my ($map) = @_;
1379
1380 cf::sync_job { $map->load };
1381}
1382
1383sub save {
1384 my ($self) = @_;
1385
1386 my $lock = cf::lock_acquire "map_data:" . $self->path;
1387
1388 $self->{last_save} = $cf::RUNTIME;
1389
1390 return unless $self->dirty;
1391
1392 my $save = $self->{path}->save_path; utf8::encode $save;
1393 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
1394
1395 $self->{load_path} = $save;
1396
1397 return if $self->{deny_save};
1398
1399 local $self->{last_access} = $self->last_access;#d#
1400
1401 cf::async {
1402 $_->contr->save for $self->players;
1403 };
1404
1405 if ($uniq) {
1406 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1407 $self->save_objects ($uniq, cf::IO_UNIQUES);
1408 } else {
1409 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1410 }
1411}
1412
1413sub swap_out {
1414 my ($self) = @_;
1415
1416 # save first because save cedes
1417 $self->save;
1418
1419 my $lock = cf::lock_acquire "map_data:" . $self->path;
1420
1421 return if $self->players;
1422 return if $self->in_memory != cf::MAP_IN_MEMORY;
1423 return if $self->{deny_save};
1424
1425 $self->clear;
1426 $self->in_memory (cf::MAP_SWAPPED);
1427}
1428
1429sub reset_at {
1430 my ($self) = @_;
1431
1432 # TODO: safety, remove and allow resettable per-player maps
1433 return 1e99 if $self->{path}{user_rel};
1434 return 1e99 if $self->{deny_reset};
1435
1436 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1437 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1438
1439 $time + $to
1440}
1441
1442sub should_reset {
1443 my ($self) = @_;
1444
1445 $self->reset_at <= $cf::RUNTIME
1446}
1447
1448sub unlink_save {
1449 my ($self) = @_;
1450
1451 utf8::encode (my $save = $self->{path}->save_path);
1452 aioreq_pri 3; IO::AIO::aio_unlink $save;
1453 aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
1454}
1455
1456sub rename {
1457 my ($self, $new_path) = @_;
1458
1459 $self->unlink_save;
1460
1461 delete $cf::MAP{$self->path};
1462 $self->{path} = new cf::path $new_path;
1463 $self->path ($self->{path}->as_string);
1464 $cf::MAP{$self->path} = $self;
1465
1466 $self->save;
1467}
1468
1469sub reset {
1470 my ($self) = @_;
1471
1472 my $lock = cf::lock_acquire "map_data:" . $self->path;
1473
1474 return if $self->players;
1475 return if $self->{path}{user_rel};#d#
1476
1477 warn "resetting map ", $self->path;#d#
1478
1479 delete $cf::MAP{$self->path};
1480
1481 $_->clear_links_to ($self) for values %cf::MAP;
1482
1483 $self->unlink_save;
1484 $self->destroy;
1485}
1486
1487my $nuke_counter = "aaaa";
1488
1489sub nuke {
1490 my ($self) = @_;
1491
1492 $self->{deny_save} = 1;
1493 $self->reset_timeout (1);
1494 $self->rename ("{nuke}/" . ($nuke_counter++));
1495 $self->reset; # polite request, might not happen
1496}
1497
1498sub customise_for {
1499 my ($map, $ob) = @_;
1500
1501 if ($map->per_player) {
1502 return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
1503 }
1504
1505 $map
1506}
1507
1508sub emergency_save {
1509 my $freeze_guard = cf::freeze_mainloop;
1510
1511 warn "enter emergency perl save\n";
1512
1513 cf::sync_job {
1514 warn "begin emergency player save\n";
1515 $_->save for values %cf::PLAYER;
1516 warn "end emergency player save\n";
1517
1518 warn "begin emergency map save\n";
1519 $_->save for values %cf::MAP;
1520 warn "end emergency map save\n";
1521 };
1522
1523 warn "leave emergency perl save\n";
1524}
1525
1526package cf;
1527
1528=back
1529
887 1530
888=head3 cf::object::player 1531=head3 cf::object::player
889 1532
890=over 4 1533=over 4
891 1534
927 (ref $cf::CFG{"may_$access"} 1570 (ref $cf::CFG{"may_$access"}
928 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}} 1571 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
929 : $cf::CFG{"may_$access"}) 1572 : $cf::CFG{"may_$access"})
930} 1573}
931 1574
1575=item $player_object->enter_link
1576
1577Freezes the player and moves him/her to a special map (C<{link}>).
1578
1579The player should be reaosnably safe there for short amounts of time. You
1580I<MUST> call C<leave_link> as soon as possible, though.
1581
1582=item $player_object->leave_link ($map, $x, $y)
1583
1584Moves the player out of the specila link map onto the given map. If the
1585map is not valid (or omitted), the player will be moved back to the
1586location he/she was before the call to C<enter_link>, or, if that fails,
1587to the emergency map position.
1588
1589Might block.
1590
1591=cut
1592
1593sub cf::object::player::enter_link {
1594 my ($self) = @_;
1595
1596 $self->deactivate_recursive;
1597
1598 return if $self->map == $LINK_MAP;
1599
1600 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1601 if $self->map;
1602
1603 $self->enter_map ($LINK_MAP, 20, 20);
1604}
1605
1606sub cf::object::player::leave_link {
1607 my ($self, $map, $x, $y) = @_;
1608
1609 my $link_pos = delete $self->{_link_pos};
1610
1611 unless ($map) {
1612 # restore original map position
1613 ($map, $x, $y) = @{ $link_pos || [] };
1614 $map = cf::map::find $map;
1615
1616 unless ($map) {
1617 ($map, $x, $y) = @$EMERGENCY_POSITION;
1618 $map = cf::map::find $map
1619 or die "FATAL: cannot load emergency map\n";
1620 }
1621 }
1622
1623 ($x, $y) = (-1, -1)
1624 unless (defined $x) && (defined $y);
1625
1626 # use -1 or undef as default coordinates, not 0, 0
1627 ($x, $y) = ($map->enter_x, $map->enter_y)
1628 if $x <=0 && $y <= 0;
1629
1630 $map->load;
1631
1632 return unless $self->contr->active;
1633 $self->activate_recursive;
1634 $self->enter_map ($map, $x, $y);
1635}
1636
1637cf::player->attach (
1638 on_logout => sub {
1639 my ($pl) = @_;
1640
1641 # abort map switching before logout
1642 if ($pl->ob->{_link_pos}) {
1643 cf::sync_job {
1644 $pl->ob->leave_link
1645 };
1646 }
1647 },
1648 on_login => sub {
1649 my ($pl) = @_;
1650
1651 # try to abort aborted map switching on player login :)
1652 # should happen only on crashes
1653 if ($pl->ob->{_link_pos}) {
1654 $pl->ob->enter_link;
1655 (async {
1656 # we need this sleep as the login has a concurrent enter_exit running
1657 # and this sleep increases chances of the player not ending up in scorn
1658 $pl->ob->reply (undef,
1659 "There was an internal problem at your last logout, "
1660 . "the server will try to bring you to your intended destination in a second.",
1661 cf::NDI_RED);
1662 Coro::Timer::sleep 1;
1663 $pl->ob->leave_link;
1664 })->prio (2);
1665 }
1666 },
1667);
1668
1669=item $player_object->goto ($path, $x, $y)
1670
1671=cut
1672
1673sub cf::object::player::goto {
1674 my ($self, $path, $x, $y) = @_;
1675
1676 $path = new cf::path $path;
1677 $path ne "/" or Carp::cluck ("oy");#d#
1678
1679 $self->enter_link;
1680
1681 (async {
1682 my $map = cf::map::find $path->as_string;
1683 $map = $map->customise_for ($self) if $map;
1684
1685# warn "entering ", $map->path, " at ($x, $y)\n"
1686# if $map;
1687
1688 $map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1689
1690 $self->leave_link ($map, $x, $y);
1691 })->prio (1);
1692}
1693
1694=item $player_object->enter_exit ($exit_object)
1695
1696=cut
1697
1698sub parse_random_map_params {
1699 my ($spec) = @_;
1700
1701 my $rmp = { # defaults
1702 xsize => 10,
1703 ysize => 10,
1704 };
1705
1706 for (split /\n/, $spec) {
1707 my ($k, $v) = split /\s+/, $_, 2;
1708
1709 $rmp->{lc $k} = $v if (length $k) && (length $v);
1710 }
1711
1712 $rmp
1713}
1714
1715sub prepare_random_map {
1716 my ($exit) = @_;
1717
1718 # all this does is basically replace the /! path by
1719 # a new random map path (?random/...) with a seed
1720 # that depends on the exit object
1721
1722 my $rmp = parse_random_map_params $exit->msg;
1723
1724 if ($exit->map) {
1725 $rmp->{region} = $exit->map->region_name;
1726 $rmp->{origin_map} = $exit->map->path;
1727 $rmp->{origin_x} = $exit->x;
1728 $rmp->{origin_y} = $exit->y;
1729 }
1730
1731 $rmp->{random_seed} ||= $exit->random_seed;
1732
1733 my $data = cf::to_json $rmp;
1734 my $md5 = Digest::MD5::md5_hex $data;
1735
1736 if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
1737 aio_write $fh, 0, (length $data), $data, 0;
1738
1739 $exit->slaying ("?random/$md5");
1740 $exit->msg (undef);
1741 }
1742}
1743
1744sub cf::object::player::enter_exit {
1745 my ($self, $exit) = @_;
1746
1747 return unless $self->type == cf::PLAYER;
1748
1749 $self->enter_link;
1750
1751 (async {
1752 $self->deactivate_recursive; # just to be sure
1753 unless (eval {
1754 prepare_random_map $exit
1755 if $exit->slaying eq "/!";
1756
1757 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1758 $self->goto ($path, $exit->stats->hp, $exit->stats->sp);
1759
1760 1;
1761 }) {
1762 $self->message ("Something went wrong deep within the crossfire server. "
1763 . "I'll try to bring you back to the map you were before. "
1764 . "Please report this to the dungeon master",
1765 cf::NDI_UNIQUE | cf::NDI_RED);
1766
1767 warn "ERROR in enter_exit: $@";
1768 $self->leave_link;
1769 }
1770 })->prio (1);
1771}
1772
932=head3 cf::client 1773=head3 cf::client
933 1774
934=over 4 1775=over 4
935 1776
936=item $client->send_drawinfo ($text, $flags) 1777=item $client->send_drawinfo ($text, $flags)
979 on_reply => sub { 1820 on_reply => sub {
980 my ($ns, $msg) = @_; 1821 my ($ns, $msg) = @_;
981 1822
982 # this weird shuffling is so that direct followup queries 1823 # this weird shuffling is so that direct followup queries
983 # get handled first 1824 # get handled first
984 my $queue = delete $ns->{query_queue}; 1825 my $queue = delete $ns->{query_queue}
1826 or return; # be conservative, not sure how that can happen, but we saw a crash here
985 1827
986 (shift @$queue)->[1]->($msg); 1828 (shift @$queue)->[1]->($msg);
987 1829
988 push @{ $ns->{query_queue} }, @$queue; 1830 push @{ $ns->{query_queue} }, @$queue;
989 1831
995 } 1837 }
996 } 1838 }
997 }, 1839 },
998); 1840);
999 1841
1000=item $client->coro (\&cb) 1842=item $client->async (\&cb)
1001 1843
1002Create a new coroutine, running the specified callback. The coroutine will 1844Create a new coroutine, running the specified callback. The coroutine will
1003be automatically cancelled when the client gets destroyed (e.g. on logout, 1845be automatically cancelled when the client gets destroyed (e.g. on logout,
1004or loss of connection). 1846or loss of connection).
1005 1847
1006=cut 1848=cut
1007 1849
1008sub cf::client::coro { 1850sub cf::client::async {
1009 my ($self, $cb) = @_; 1851 my ($self, $cb) = @_;
1010 1852
1011 my $coro; $coro = async { 1853 my $coro = &Coro::async ($cb);
1012 eval {
1013 $cb->();
1014 };
1015 warn $@ if $@;
1016 };
1017 1854
1018 $coro->on_destroy (sub { 1855 $coro->on_destroy (sub {
1019 delete $self->{_coro}{$coro+0}; 1856 delete $self->{_coro}{$coro+0};
1020 }); 1857 });
1021 1858
1193 2030
1194{ 2031{
1195 my $path = cf::localdir . "/database.pst"; 2032 my $path = cf::localdir . "/database.pst";
1196 2033
1197 sub db_load() { 2034 sub db_load() {
1198 warn "loading database $path\n";#d# remove later
1199 $DB = stat $path ? Storable::retrieve $path : { }; 2035 $DB = stat $path ? Storable::retrieve $path : { };
1200 } 2036 }
1201 2037
1202 my $pid; 2038 my $pid;
1203 2039
1204 sub db_save() { 2040 sub db_save() {
1205 warn "saving database $path\n";#d# remove later
1206 waitpid $pid, 0 if $pid; 2041 waitpid $pid, 0 if $pid;
1207 if (0 == ($pid = fork)) { 2042 if (0 == ($pid = fork)) {
1208 $DB->{_meta}{version} = 1; 2043 $DB->{_meta}{version} = 1;
1209 Storable::nstore $DB, "$path~"; 2044 Storable::nstore $DB, "$path~";
1210 rename "$path~", $path; 2045 rename "$path~", $path;
1258 open my $fh, "<:utf8", cf::confdir . "/config" 2093 open my $fh, "<:utf8", cf::confdir . "/config"
1259 or return; 2094 or return;
1260 2095
1261 local $/; 2096 local $/;
1262 *CFG = YAML::Syck::Load <$fh>; 2097 *CFG = YAML::Syck::Load <$fh>;
2098
2099 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2100
2101 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2102 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
2103
2104 if (exists $CFG{mlockall}) {
2105 eval {
2106 $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2107 and die "WARNING: m(un)lockall failed: $!\n";
2108 };
2109 warn $@ if $@;
2110 }
1263} 2111}
1264 2112
1265sub main { 2113sub main {
2114 # we must not ever block the main coroutine
2115 local $Coro::idle = sub {
2116 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2117 async { Event::one_event };
2118 };
2119
1266 cfg_load; 2120 cfg_load;
1267 db_load; 2121 db_load;
1268 load_extensions; 2122 load_extensions;
1269 Event::loop; 2123 Event::loop;
1270} 2124}
1271 2125
1272############################################################################# 2126#############################################################################
1273# initialisation 2127# initialisation
1274 2128
1275sub _perl_reload() { 2129sub reload() {
2130 # can/must only be called in main
2131 if ($Coro::current != $Coro::main) {
2132 warn "can only reload from main coroutine\n";
2133 return;
2134 }
2135
1276 warn "reloading..."; 2136 warn "reloading...";
1277 2137
2138 my $guard = freeze_mainloop;
2139 cf::emergency_save;
2140
1278 eval { 2141 eval {
1279 local $FREEZE = 1; 2142 # if anything goes wrong in here, we should simply crash as we already saved
1280
1281 cf::emergency_save;
1282 2143
1283 # cancel all watchers 2144 # cancel all watchers
1284 for (Event::all_watchers) { 2145 for (Event::all_watchers) {
1285 $_->cancel if $_->data & WF_AUTOCANCEL; 2146 $_->cancel if $_->data & WF_AUTOCANCEL;
1286 } 2147 }
1344 cf::load_extensions; 2205 cf::load_extensions;
1345 2206
1346 # reattach attachments to objects 2207 # reattach attachments to objects
1347 warn "reattach"; 2208 warn "reattach";
1348 _global_reattach; 2209 _global_reattach;
2210 reattach $_ for values %MAP;
1349 }; 2211 };
1350 warn $@ if $@;
1351 2212
1352 warn "reloaded"; 2213 if ($@) {
2214 warn $@;
2215 warn "error while reloading, exiting.";
2216 exit 1;
2217 }
2218
2219 warn "reloaded successfully";
1353}; 2220};
1354 2221
1355sub perl_reload() { 2222#############################################################################
1356 _perl_reload; 2223
2224unless ($LINK_MAP) {
2225 $LINK_MAP = cf::map::new;
2226
2227 $LINK_MAP->width (41);
2228 $LINK_MAP->height (41);
2229 $LINK_MAP->alloc;
2230 $LINK_MAP->path ("{link}");
2231 $LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
2232 $LINK_MAP->in_memory (MAP_IN_MEMORY);
2233
2234 # dirty hack because... archetypes are not yet loaded
2235 Event->timer (
2236 after => 10,
2237 cb => sub {
2238 $_[0]->w->cancel;
2239
2240 # provide some exits "home"
2241 my $exit = cf::object::new "exit";
2242
2243 $exit->slaying ($EMERGENCY_POSITION->[0]);
2244 $exit->stats->hp ($EMERGENCY_POSITION->[1]);
2245 $exit->stats->sp ($EMERGENCY_POSITION->[2]);
2246
2247 $LINK_MAP->insert ($exit->clone, 19, 19);
2248 $LINK_MAP->insert ($exit->clone, 19, 20);
2249 $LINK_MAP->insert ($exit->clone, 19, 21);
2250 $LINK_MAP->insert ($exit->clone, 20, 19);
2251 $LINK_MAP->insert ($exit->clone, 20, 21);
2252 $LINK_MAP->insert ($exit->clone, 21, 19);
2253 $LINK_MAP->insert ($exit->clone, 21, 20);
2254 $LINK_MAP->insert ($exit->clone, 21, 21);
2255
2256 $exit->destroy;
2257 });
2258
2259 $LINK_MAP->{deny_save} = 1;
2260 $LINK_MAP->{deny_reset} = 1;
2261
2262 $cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1357} 2263}
1358 2264
1359register "<global>", __PACKAGE__; 2265register "<global>", __PACKAGE__;
1360 2266
1361register_command "perl-reload" => sub { 2267register_command "reload" => sub {
1362 my ($who, $arg) = @_; 2268 my ($who, $arg) = @_;
1363 2269
1364 if ($who->flag (FLAG_WIZ)) { 2270 if ($who->flag (FLAG_WIZ)) {
2271 $who->message ("start of reload.");
2272 reload;
1365 $who->message ("reloading..."); 2273 $who->message ("end of reload.");
1366 _perl_reload;
1367 } 2274 }
1368}; 2275};
1369 2276
1370unshift @INC, $LIBDIR; 2277unshift @INC, $LIBDIR;
1371 2278
1373 reentrant => 0, 2280 reentrant => 0,
1374 prio => 0, 2281 prio => 0,
1375 at => $NEXT_TICK || $TICK, 2282 at => $NEXT_TICK || $TICK,
1376 data => WF_AUTOCANCEL, 2283 data => WF_AUTOCANCEL,
1377 cb => sub { 2284 cb => sub {
1378 unless ($FREEZE) {
1379 cf::server_tick; # one server iteration 2285 cf::server_tick; # one server iteration
1380 $RUNTIME += $TICK; 2286 $RUNTIME += $TICK;
1381 }
1382
1383 $NEXT_TICK += $TICK; 2287 $NEXT_TICK += $TICK;
1384 2288
1385 # if we are delayed by four ticks or more, skip them all 2289 # if we are delayed by four ticks or more, skip them all
1386 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; 2290 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1387 2291
1390 }, 2294 },
1391); 2295);
1392 2296
1393IO::AIO::max_poll_time $TICK * 0.2; 2297IO::AIO::max_poll_time $TICK * 0.2;
1394 2298
2299Event->io (
1395Event->io (fd => IO::AIO::poll_fileno, 2300 fd => IO::AIO::poll_fileno,
1396 poll => 'r', 2301 poll => 'r',
1397 prio => 5, 2302 prio => 5,
1398 data => WF_AUTOCANCEL, 2303 data => WF_AUTOCANCEL,
1399 cb => \&IO::AIO::poll_cb); 2304 cb => \&IO::AIO::poll_cb,
2305);
1400 2306
1401# we must not ever block the main coroutine 2307Event->timer (
1402$Coro::idle = sub { 2308 data => WF_AUTOCANCEL,
1403 #Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d# 2309 after => 0,
1404 warn "FATAL: Coro::idle was called, major BUG\n"; 2310 interval => 10,
2311 cb => sub {
1405 (Coro::unblock_sub { 2312 (Coro::unblock_sub {
1406 Event::one_event; 2313 write_runtime
2314 or warn "ERROR: unable to write runtime file: $!";
1407 })->(); 2315 })->();
1408}; 2316 },
2317);
2318
2319END { cf::emergency_save }
1409 2320
14101 23211
1411 2322

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