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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.102 by root, Wed Dec 27 15:20:54 2006 UTC vs.
Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC

8use Storable; 8use Storable;
9use Opcode; 9use Opcode;
10use Safe; 10use Safe;
11use Safe::Hole; 11use Safe::Hole;
12 12
13use Coro; 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;
18 19
20use Digest::MD5;
21use Fcntl;
19use IO::AIO 2.3; 22use IO::AIO 2.31 ();
20use YAML::Syck (); 23use YAML::Syck ();
21use Time::HiRes; 24use Time::HiRes;
22 25
23use Event; $Event::Eval = 1; # no idea why this is required, but it is 26use Event; $Event::Eval = 1; # no idea why this is required, but it is
24 27
25# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode? 28# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26$YAML::Syck::ImplicitUnicode = 1; 29$YAML::Syck::ImplicitUnicode = 1;
27 30
28$Coro::main->prio (Coro::PRIO_MIN); 31$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29 32
30sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload 33sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31 34
32our %COMMAND = (); 35our %COMMAND = ();
33our %COMMAND_TIME = (); 36our %COMMAND_TIME = ();
37our $LIBDIR = datadir . "/ext"; 40our $LIBDIR = datadir . "/ext";
38 41
39our $TICK = MAX_TIME * 1e-6; 42our $TICK = MAX_TIME * 1e-6;
40our $TICK_WATCHER; 43our $TICK_WATCHER;
41our $NEXT_TICK; 44our $NEXT_TICK;
45our $NOW;
42 46
43our %CFG; 47our %CFG;
44 48
45our $UPTIME; $UPTIME ||= time; 49our $UPTIME; $UPTIME ||= time;
50our $RUNTIME;
51
52our %MAP; # all maps
53our $LINK_MAP; # the special {link} map
54our $RANDOM_MAPS = cf::localdir . "/random";
55our %EXT_CORO;
56
57binmode STDOUT;
58binmode STDERR;
59
60# read virtual server time, if available
61unless ($RUNTIME || !-e cf::localdir . "/runtime") {
62 open my $fh, "<", cf::localdir . "/runtime"
63 or die "unable to read runtime file: $!";
64 $RUNTIME = <$fh> + 0.;
65}
66
67mkdir cf::localdir;
68mkdir cf::localdir . "/" . cf::playerdir;
69mkdir cf::localdir . "/" . cf::tmpdir;
70mkdir cf::localdir . "/" . cf::uniquedir;
71mkdir $RANDOM_MAPS;
72
73# a special map that is always available
74our $LINK_MAP;
75our $EMERGENCY_POSITION;
46 76
47############################################################################# 77#############################################################################
48 78
49=head2 GLOBAL VARIABLES 79=head2 GLOBAL VARIABLES
50 80
51=over 4 81=over 4
52 82
53=item $cf::UPTIME 83=item $cf::UPTIME
54 84
55The timestamp of the server start (so not actually an uptime). 85The timestamp of the server start (so not actually an uptime).
86
87=item $cf::RUNTIME
88
89The time this server has run, starts at 0 and is increased by $cf::TICK on
90every server tick.
56 91
57=item $cf::LIBDIR 92=item $cf::LIBDIR
58 93
59The perl library directory, where extensions and cf-specific modules can 94The perl library directory, where extensions and cf-specific modules can
60be found. It will be added to C<@INC> automatically. 95be found. It will be added to C<@INC> automatically.
96
97=item $cf::NOW
98
99The time of the last (current) server tick.
61 100
62=item $cf::TICK 101=item $cf::TICK
63 102
64The interval between server ticks, in seconds. 103The interval between server ticks, in seconds.
65 104
73=cut 112=cut
74 113
75BEGIN { 114BEGIN {
76 *CORE::GLOBAL::warn = sub { 115 *CORE::GLOBAL::warn = sub {
77 my $msg = join "", @_; 116 my $msg = join "", @_;
117 utf8::encode $msg;
118
78 $msg .= "\n" 119 $msg .= "\n"
79 unless $msg =~ /\n$/; 120 unless $msg =~ /\n$/;
80 121
81 print STDERR "cfperl: $msg";
82 LOG llevError, "cfperl: $msg"; 122 LOG llevError, "cfperl: $msg";
83 }; 123 };
84} 124}
85 125
86@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable'; 126@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
139sub to_json($) { 179sub to_json($) {
140 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 180 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
141 JSON::Syck::Dump $_[0] 181 JSON::Syck::Dump $_[0]
142} 182}
143 183
184=item cf::lock_wait $string
185
186Wait until the given lock is available. See cf::lock_acquire.
187
188=item my $lock = cf::lock_acquire $string
189
190Wait until the given lock is available and then acquires it and returns
191a Coro::guard object. If the guard object gets destroyed (goes out of scope,
192for example when the coroutine gets canceled), the lock is automatically
193returned.
194
195Lock names should begin with a unique identifier (for example, cf::map::find
196uses map_find and cf::map::load uses map_load).
197
198=cut
199
200our %LOCK;
201
202sub lock_wait($) {
203 my ($key) = @_;
204
205 # wait for lock, if any
206 while ($LOCK{$key}) {
207 push @{ $LOCK{$key} }, $Coro::current;
208 Coro::schedule;
209 }
210}
211
212sub lock_acquire($) {
213 my ($key) = @_;
214
215 # wait, to be sure we are not locked
216 lock_wait $key;
217
218 $LOCK{$key} = [];
219
220 Coro::guard {
221 # wake up all waiters, to be on the safe side
222 $_->ready for @{ delete $LOCK{$key} };
223 }
224}
225
226sub freeze_mainloop {
227 return unless $TICK_WATCHER->is_active;
228
229 my $guard = Coro::guard { $TICK_WATCHER->start };
230 $TICK_WATCHER->stop;
231 $guard
232}
233
234=item cf::async { BLOCK }
235
236Currently the same as Coro::async_pool, meaning you cannot use
237C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
238thing you are allowed to do is call C<prio> on it.
239
240=cut
241
242BEGIN { *async = \&Coro::async_pool }
243
244=item cf::sync_job { BLOCK }
245
246The design of crossfire+ requires that the main coro ($Coro::main) is
247always able to handle events or runnable, as crossfire+ is only partly
248reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
249
250If it must be done, put the blocking parts into C<sync_job>. This will run
251the given BLOCK in another coroutine while waiting for the result. The
252server will be frozen during this time, so the block should either finish
253fast or be very important.
254
255=cut
256
257sub sync_job(&) {
258 my ($job) = @_;
259
260 if ($Coro::current == $Coro::main) {
261 # this is the main coro, too bad, we have to block
262 # till the operation succeeds, freezing the server :/
263
264 # TODO: use suspend/resume instead
265 # (but this is cancel-safe)
266 my $freeze_guard = freeze_mainloop;
267
268 my $busy = 1;
269 my @res;
270
271 (async {
272 @res = eval { $job->() };
273 warn $@ if $@;
274 undef $busy;
275 })->prio (Coro::PRIO_MAX);
276
277 while ($busy) {
278 Coro::cede or Event::one_event;
279 }
280
281 wantarray ? @res : $res[0]
282 } else {
283 # we are in another coroutine, how wonderful, everything just works
284
285 $job->()
286 }
287}
288
289=item $coro = cf::async_ext { BLOCK }
290
291Like async, but this coro is automcatially being canceled when the
292extension calling this is being unloaded.
293
294=cut
295
296sub async_ext(&) {
297 my $cb = shift;
298
299 my $coro = &Coro::async ($cb);
300
301 $coro->on_destroy (sub {
302 delete $EXT_CORO{$coro+0};
303 });
304 $EXT_CORO{$coro+0} = $coro;
305
306 $coro
307}
308
309sub write_runtime {
310 my $runtime = cf::localdir . "/runtime";
311
312 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
313 or return;
314
315 my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
316 (aio_write $fh, 0, (length $value), $value, 0) <= 0
317 and return;
318
319 aio_fsync $fh
320 and return;
321
322 close $fh
323 or return;
324
325 aio_rename "$runtime~", $runtime
326 and return;
327
328 1
329}
330
144=back 331=back
145 332
146=cut 333=cut
334
335#############################################################################
336
337package cf::path;
338
339sub new {
340 my ($class, $path, $base) = @_;
341
342 $path = $path->as_string if ref $path;
343
344 my $self = bless { }, $class;
345
346 # {... are special paths that are not touched
347 # ?xxx/... are special absolute paths
348 # ?random/... random maps
349 # /! non-realised random map exit
350 # /... normal maps
351 # ~/... per-player maps without a specific player (DO NOT USE)
352 # ~user/... per-player map of a specific user
353
354 if ($path =~ /^{/) {
355 # fine as it is
356 } elsif ($path =~ s{^\?random/}{}) {
357 Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
358 $self->{random} = cf::from_json $data;
359 } else {
360 if ($path =~ s{^~([^/]+)?}{}) {
361 $self->{user_rel} = 1;
362
363 if (defined $1) {
364 $self->{user} = $1;
365 } elsif ($base =~ m{^~([^/]+)/}) {
366 $self->{user} = $1;
367 } else {
368 warn "cannot resolve user-relative path without user <$path,$base>\n";
369 }
370 } elsif ($path =~ /^\//) {
371 # already absolute
372 } else {
373 $base =~ s{[^/]+/?$}{};
374 return $class->new ("$base/$path");
375 }
376
377 for ($path) {
378 redo if s{/\.?/}{/};
379 redo if s{/[^/]+/\.\./}{/};
380 }
381 }
382
383 $self->{path} = $path;
384
385 $self
386}
387
388# the name / primary key / in-game path
389sub as_string {
390 my ($self) = @_;
391
392 $self->{user_rel} ? "~$self->{user}$self->{path}"
393 : $self->{random} ? "?random/$self->{path}"
394 : $self->{path}
395}
396
397# the displayed name, this is a one way mapping
398sub visible_name {
399 my ($self) = @_;
400
401# if (my $rmp = $self->{random}) {
402# # todo: be more intelligent about this
403# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
404# } else {
405 $self->as_string
406# }
407}
408
409# escape the /'s in the path
410sub _escaped_path {
411 # ∕ is U+2215
412 (my $path = $_[0]{path}) =~ s/\//∕/g;
413 $path
414}
415
416# the original (read-only) location
417sub load_path {
418 my ($self) = @_;
419
420 sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
421}
422
423# the temporary/swap location
424sub save_path {
425 my ($self) = @_;
426
427 $self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
428 : $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
429 : sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
430}
431
432# the unique path, might be eq to save_path
433sub uniq_path {
434 my ($self) = @_;
435
436 $self->{user_rel} || $self->{random}
437 ? undef
438 : sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
439}
440
441# return random map parameters, or undef
442sub random_map_params {
443 my ($self) = @_;
444
445 $self->{random}
446}
447
448# this is somewhat ugly, but style maps do need special treatment
449sub is_style_map {
450 $_[0]{path} =~ m{^/styles/}
451}
452
453package cf;
147 454
148############################################################################# 455#############################################################################
149 456
150=head2 ATTACHABLE OBJECTS 457=head2 ATTACHABLE OBJECTS
151 458
505); 812);
506 813
507sub object_freezer_save { 814sub object_freezer_save {
508 my ($filename, $rdata, $objs) = @_; 815 my ($filename, $rdata, $objs) = @_;
509 816
817 sync_job {
510 if (length $$rdata) { 818 if (length $$rdata) {
511 warn sprintf "saving %s (%d,%d)\n", 819 warn sprintf "saving %s (%d,%d)\n",
512 $filename, length $$rdata, scalar @$objs; 820 $filename, length $$rdata, scalar @$objs;
513 821
514 if (open my $fh, ">:raw", "$filename~") { 822 if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
515 chmod SAVE_MODE, $fh;
516 syswrite $fh, $$rdata;
517 close $fh;
518
519 if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520 chmod SAVE_MODE, $fh; 823 chmod SAVE_MODE, $fh;
521 syswrite $fh, Storable::nfreeze { version => 1, objs => $objs }; 824 aio_write $fh, 0, (length $$rdata), $$rdata, 0;
825 aio_fsync $fh;
522 close $fh; 826 close $fh;
827
828 if (@$objs) {
829 if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
830 chmod SAVE_MODE, $fh;
831 my $data = Storable::nfreeze { version => 1, objs => $objs };
832 aio_write $fh, 0, (length $data), $data, 0;
833 aio_fsync $fh;
834 close $fh;
523 rename "$filename.pst~", "$filename.pst"; 835 aio_rename "$filename.pst~", "$filename.pst";
836 }
837 } else {
838 aio_unlink "$filename.pst";
839 }
840
841 aio_rename "$filename~", $filename;
524 } else { 842 } else {
525 unlink "$filename.pst"; 843 warn "FATAL: $filename~: $!\n";
526 } 844 }
527
528 rename "$filename~", $filename;
529 } else { 845 } else {
530 warn "FATAL: $filename~: $!\n";
531 }
532 } else {
533 unlink $filename; 846 aio_unlink $filename;
534 unlink "$filename.pst"; 847 aio_unlink "$filename.pst";
848 }
535 } 849 }
536} 850}
537 851
538sub object_freezer_as_string { 852sub object_freezer_as_string {
539 my ($rdata, $objs) = @_; 853 my ($rdata, $objs) = @_;
544} 858}
545 859
546sub object_thawer_load { 860sub object_thawer_load {
547 my ($filename) = @_; 861 my ($filename) = @_;
548 862
549 local $/; 863 my ($data, $av);
550 864
551 my $av; 865 (aio_load $filename, $data) >= 0
866 or return;
552 867
553 #TODO: use sysread etc. 868 unless (aio_stat "$filename.pst") {
554 if (open my $data, "<:raw:perlio", $filename) { 869 (aio_load "$filename.pst", $av) >= 0
555 $data = <$data>; 870 or return;
556 if (open my $pst, "<:raw:perlio", "$filename.pst") {
557 $av = eval { (Storable::thaw <$pst>)->{objs} }; 871 $av = eval { (Storable::thaw $av)->{objs} };
558 } 872 }
873
874 warn sprintf "loading %s (%d)\n",
875 $filename, length $data, scalar @{$av || []};#d#
559 return ($data, $av); 876 return ($data, $av);
560 }
561
562 ()
563} 877}
564 878
565############################################################################# 879#############################################################################
566# command handling &c 880# command handling &c
567 881
788 $self->send ("ext " . to_json \%msg); 1102 $self->send ("ext " . to_json \%msg);
789} 1103}
790 1104
791=back 1105=back
792 1106
1107
1108=head3 cf::map
1109
1110=over 4
1111
1112=cut
1113
1114package cf::map;
1115
1116use Fcntl;
1117use Coro::AIO;
1118
1119our $MAX_RESET = 3600;
1120our $DEFAULT_RESET = 3000;
1121
1122sub generate_random_map {
1123 my ($path, $rmp) = @_;
1124
1125 # mit "rum" bekleckern, nicht
1126 cf::map::_create_random_map
1127 $path,
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 $rmp->{region})
1139}
1140
1141# and all this just because we cannot iterate over
1142# all maps in C++...
1143sub change_all_map_light {
1144 my ($change) = @_;
1145
1146 $_->change_map_light ($change)
1147 for grep $_->outdoor, values %cf::MAP;
1148}
1149
1150sub try_load_header($) {
1151 my ($path) = @_;
1152
1153 utf8::encode $path;
1154 aio_open $path, O_RDONLY, 0
1155 or return;
1156
1157 my $map = cf::map::new
1158 or return;
1159
1160 # for better error messages only, will be overwritten
1161 $map->path ($path);
1162
1163 $map->load_header ($path)
1164 or return;
1165
1166 $map->{load_path} = $path;
1167
1168 $map
1169}
1170
1171sub find;
1172sub find {
1173 my ($path, $origin) = @_;
1174
1175 #warn "find<$path,$origin>\n";#d#
1176
1177 $path = new cf::path $path, $origin && $origin->path;
1178 my $key = $path->as_string;
1179
1180 cf::lock_wait "map_find:$key";
1181
1182 $cf::MAP{$key} || do {
1183 my $guard = cf::lock_acquire "map_find:$key";
1184
1185 # do it the slow way
1186 my $map = try_load_header $path->save_path;
1187
1188 Coro::cede;
1189
1190 if ($map) {
1191 $map->last_access ((delete $map->{last_access})
1192 || $cf::RUNTIME); #d#
1193 # safety
1194 $map->{instantiate_time} = $cf::RUNTIME
1195 if $map->{instantiate_time} > $cf::RUNTIME;
1196 } else {
1197 if (my $rmp = $path->random_map_params) {
1198 $map = generate_random_map $key, $rmp;
1199 } else {
1200 $map = try_load_header $path->load_path;
1201 }
1202
1203 $map or return;
1204
1205 $map->{load_original} = 1;
1206 $map->{instantiate_time} = $cf::RUNTIME;
1207 $map->last_access ($cf::RUNTIME);
1208 $map->instantiate;
1209
1210 # per-player maps become, after loading, normal maps
1211 $map->per_player (0) if $path->{user_rel};
1212 }
1213
1214 $map->path ($key);
1215 $map->{path} = $path;
1216 $map->{last_save} = $cf::RUNTIME;
1217
1218 Coro::cede;
1219
1220 if ($map->should_reset) {
1221 $map->reset;
1222 undef $guard;
1223 $map = find $path
1224 or return;
1225 }
1226
1227 $cf::MAP{$key} = $map
1228 }
1229}
1230
1231sub load {
1232 my ($self) = @_;
1233
1234 my $path = $self->{path};
1235 my $guard = cf::lock_acquire "map_load:" . $path->as_string;
1236
1237 return if $self->in_memory != cf::MAP_SWAPPED;
1238
1239 $self->in_memory (cf::MAP_LOADING);
1240
1241 $self->alloc;
1242 $self->load_objects ($self->{load_path}, 1)
1243 or return;
1244
1245 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1246 if delete $self->{load_original};
1247
1248 if (my $uniq = $path->uniq_path) {
1249 utf8::encode $uniq;
1250 if (aio_open $uniq, O_RDONLY, 0) {
1251 $self->clear_unique_items;
1252 $self->load_objects ($uniq, 0);
1253 }
1254 }
1255
1256 Coro::cede;
1257
1258 # now do the right thing for maps
1259 $self->link_multipart_objects;
1260
1261 if ($self->{path}->is_style_map) {
1262 $self->{deny_save} = 1;
1263 $self->{deny_reset} = 1;
1264 } else {
1265 $self->fix_auto_apply;
1266 $self->decay_objects;
1267 $self->update_buttons;
1268 $self->set_darkness_map;
1269 $self->difficulty ($self->estimate_difficulty)
1270 unless $self->difficulty;
1271 $self->activate;
1272 }
1273
1274 Coro::cede;
1275
1276 $self->in_memory (cf::MAP_IN_MEMORY);
1277}
1278
1279sub find_sync {
1280 my ($path, $origin) = @_;
1281
1282 cf::sync_job { cf::map::find $path, $origin }
1283}
1284
1285sub do_load_sync {
1286 my ($map) = @_;
1287
1288 cf::sync_job { $map->load };
1289}
1290
1291sub save {
1292 my ($self) = @_;
1293
1294 my $lock = cf::lock_acquire "map_data:" . $self->path;
1295
1296 $self->{last_save} = $cf::RUNTIME;
1297
1298 return unless $self->dirty;
1299
1300 my $save = $self->{path}->save_path; utf8::encode $save;
1301 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
1302
1303 $self->{load_path} = $save;
1304
1305 return if $self->{deny_save};
1306
1307 local $self->{last_access} = $self->last_access;#d#
1308
1309 if ($uniq) {
1310 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1311 $self->save_objects ($uniq, cf::IO_UNIQUES);
1312 } else {
1313 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
1314 }
1315}
1316
1317sub swap_out {
1318 my ($self) = @_;
1319
1320 # save first because save cedes
1321 $self->save;
1322
1323 my $lock = cf::lock_acquire "map_data:" . $self->path;
1324
1325 return if $self->players;
1326 return if $self->in_memory != cf::MAP_IN_MEMORY;
1327 return if $self->{deny_save};
1328
1329 $self->clear;
1330 $self->in_memory (cf::MAP_SWAPPED);
1331}
1332
1333sub reset_at {
1334 my ($self) = @_;
1335
1336 # TODO: safety, remove and allow resettable per-player maps
1337 return 1e99 if $self->{path}{user_rel};
1338 return 1e99 if $self->{deny_reset};
1339
1340 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1341 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1342
1343 $time + $to
1344}
1345
1346sub should_reset {
1347 my ($self) = @_;
1348
1349 $self->reset_at <= $cf::RUNTIME
1350}
1351
1352sub unlink_save {
1353 my ($self) = @_;
1354
1355 utf8::encode (my $save = $self->{path}->save_path);
1356 aioreq_pri 3; IO::AIO::aio_unlink $save;
1357 aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
1358}
1359
1360sub rename {
1361 my ($self, $new_path) = @_;
1362
1363 $self->unlink_save;
1364
1365 delete $cf::MAP{$self->path};
1366 $self->{path} = new cf::path $new_path;
1367 $self->path ($self->{path}->as_string);
1368 $cf::MAP{$self->path} = $self;
1369
1370 $self->save;
1371}
1372
1373sub reset {
1374 my ($self) = @_;
1375
1376 my $lock = cf::lock_acquire "map_data:" . $self->path;
1377
1378 return if $self->players;
1379 return if $self->{path}{user_rel};#d#
1380
1381 warn "resetting map ", $self->path;#d#
1382
1383 delete $cf::MAP{$self->path};
1384
1385 $_->clear_links_to ($self) for values %cf::MAP;
1386
1387 $self->unlink_save;
1388 $self->destroy;
1389}
1390
1391my $nuke_counter = "aaaa";
1392
1393sub nuke {
1394 my ($self) = @_;
1395
1396 $self->{deny_save} = 1;
1397 $self->reset_timeout (1);
1398 $self->rename ("{nuke}/" . ($nuke_counter++));
1399 $self->reset; # polite request, might not happen
1400}
1401
1402sub customise_for {
1403 my ($map, $ob) = @_;
1404
1405 if ($map->per_player) {
1406 return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
1407 }
1408
1409 $map
1410}
1411
1412sub emergency_save {
1413 my $freeze_guard = cf::freeze_mainloop;
1414
1415 warn "enter emergency map save\n";
1416
1417 cf::sync_job {
1418 warn "begin emergency map save\n";
1419 $_->save for values %cf::MAP;
1420 };
1421
1422 warn "end emergency map save\n";
1423}
1424
1425package cf;
1426
1427=back
1428
1429
793=head3 cf::object::player 1430=head3 cf::object::player
794 1431
795=over 4 1432=over 4
796 1433
797=item $player_object->reply ($npc, $msg[, $flags]) 1434=item $player_object->reply ($npc, $msg[, $flags])
832 (ref $cf::CFG{"may_$access"} 1469 (ref $cf::CFG{"may_$access"}
833 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}} 1470 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
834 : $cf::CFG{"may_$access"}) 1471 : $cf::CFG{"may_$access"})
835} 1472}
836 1473
1474=item $player_object->enter_link
1475
1476Freezes the player and moves him/her to a special map (C<{link}>).
1477
1478The player should be reaosnably safe there for short amounts of time. You
1479I<MUST> call C<leave_link> as soon as possible, though.
1480
1481=item $player_object->leave_link ($map, $x, $y)
1482
1483Moves the player out of the specila link map onto the given map. If the
1484map is not valid (or omitted), the player will be moved back to the
1485location he/she was before the call to C<enter_link>, or, if that fails,
1486to the emergency map position.
1487
1488Might block.
1489
1490=cut
1491
1492sub cf::object::player::enter_link {
1493 my ($self) = @_;
1494
1495 $self->deactivate_recursive;
1496
1497 return if $self->map == $LINK_MAP;
1498
1499 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1500 if $self->map;
1501
1502 $self->enter_map ($LINK_MAP, 20, 20);
1503}
1504
1505sub cf::object::player::leave_link {
1506 my ($self, $map, $x, $y) = @_;
1507
1508 my $link_pos = delete $self->{_link_pos};
1509
1510 unless ($map) {
1511 # restore original map position
1512 ($map, $x, $y) = @{ $link_pos || [] };
1513 $map = cf::map::find $map;
1514
1515 unless ($map) {
1516 ($map, $x, $y) = @$EMERGENCY_POSITION;
1517 $map = cf::map::find $map
1518 or die "FATAL: cannot load emergency map\n";
1519 }
1520 }
1521
1522 ($x, $y) = (-1, -1)
1523 unless (defined $x) && (defined $y);
1524
1525 # use -1 or undef as default coordinates, not 0, 0
1526 ($x, $y) = ($map->enter_x, $map->enter_y)
1527 if $x <=0 && $y <= 0;
1528
1529 $map->load;
1530
1531 $self->activate_recursive;
1532 $self->enter_map ($map, $x, $y);
1533}
1534
1535cf::player->attach (
1536 on_logout => sub {
1537 my ($pl) = @_;
1538
1539 # abort map switching before logout
1540 if ($pl->ob->{_link_pos}) {
1541 cf::sync_job {
1542 $pl->ob->leave_link
1543 };
1544 }
1545 },
1546 on_login => sub {
1547 my ($pl) = @_;
1548
1549 # try to abort aborted map switching on player login :)
1550 # should happen only on crashes
1551 if ($pl->ob->{_link_pos}) {
1552
1553 $pl->ob->enter_link;
1554 (async {
1555 # we need this sleep as the login has a concurrent enter_exit running
1556 # and this sleep increases chances of the player not ending up in scorn
1557 $pl->ob->reply (undef,
1558 "There was an internal problem at your last logout, "
1559 . "the server will try to bring you to your intended destination in a second.",
1560 cf::NDI_RED);
1561 Coro::Timer::sleep 1;
1562 $pl->ob->leave_link;
1563 })->prio (2);
1564 }
1565 },
1566);
1567
1568=item $player_object->goto ($path, $x, $y)
1569
1570=cut
1571
1572sub cf::object::player::goto {
1573 my ($self, $path, $x, $y) = @_;
1574
1575 $self->enter_link;
1576
1577 (async {
1578 $path = new cf::path $path;
1579
1580 my $map = cf::map::find $path->as_string;
1581 $map = $map->customise_for ($self) if $map;
1582
1583# warn "entering ", $map->path, " at ($x, $y)\n"
1584# if $map;
1585
1586 $map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1587
1588 $self->leave_link ($map, $x, $y);
1589 })->prio (1);
1590}
1591
1592=item $player_object->enter_exit ($exit_object)
1593
1594=cut
1595
1596sub parse_random_map_params {
1597 my ($spec) = @_;
1598
1599 my $rmp = { # defaults
1600 xsize => 10,
1601 ysize => 10,
1602 };
1603
1604 for (split /\n/, $spec) {
1605 my ($k, $v) = split /\s+/, $_, 2;
1606
1607 $rmp->{lc $k} = $v if (length $k) && (length $v);
1608 }
1609
1610 $rmp
1611}
1612
1613sub prepare_random_map {
1614 my ($exit) = @_;
1615
1616 # all this does is basically replace the /! path by
1617 # a new random map path (?random/...) with a seed
1618 # that depends on the exit object
1619
1620 my $rmp = parse_random_map_params $exit->msg;
1621
1622 if ($exit->map) {
1623 $rmp->{region} = $exit->map->region_name;
1624 $rmp->{origin_map} = $exit->map->path;
1625 $rmp->{origin_x} = $exit->x;
1626 $rmp->{origin_y} = $exit->y;
1627 }
1628
1629 $rmp->{random_seed} ||= $exit->random_seed;
1630
1631 my $data = cf::to_json $rmp;
1632 my $md5 = Digest::MD5::md5_hex $data;
1633
1634 if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
1635 aio_write $fh, 0, (length $data), $data, 0;
1636
1637 $exit->slaying ("?random/$md5");
1638 $exit->msg (undef);
1639 }
1640}
1641
1642sub cf::object::player::enter_exit {
1643 my ($self, $exit) = @_;
1644
1645 return unless $self->type == cf::PLAYER;
1646
1647 $self->enter_link;
1648
1649 (async {
1650 $self->deactivate_recursive; # just to be sure
1651 unless (eval {
1652 prepare_random_map $exit
1653 if $exit->slaying eq "/!";
1654
1655 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1656 $self->goto ($path, $exit->stats->hp, $exit->stats->sp);
1657
1658 1;
1659 }) {
1660 $self->message ("Something went wrong deep within the crossfire server. "
1661 . "I'll try to bring you back to the map you were before. "
1662 . "Please report this to the dungeon master",
1663 cf::NDI_UNIQUE | cf::NDI_RED);
1664
1665 warn "ERROR in enter_exit: $@";
1666 $self->leave_link;
1667 }
1668 })->prio (1);
1669}
1670
837=head3 cf::client 1671=head3 cf::client
838 1672
839=over 4 1673=over 4
840 1674
841=item $client->send_drawinfo ($text, $flags) 1675=item $client->send_drawinfo ($text, $flags)
884 on_reply => sub { 1718 on_reply => sub {
885 my ($ns, $msg) = @_; 1719 my ($ns, $msg) = @_;
886 1720
887 # this weird shuffling is so that direct followup queries 1721 # this weird shuffling is so that direct followup queries
888 # get handled first 1722 # get handled first
889 my $queue = delete $ns->{query_queue}; 1723 my $queue = delete $ns->{query_queue}
1724 or return; # be conservative, not sure how that can happen, but we saw a crash here
890 1725
891 (shift @$queue)->[1]->($msg); 1726 (shift @$queue)->[1]->($msg);
892 1727
893 push @{ $ns->{query_queue} }, @$queue; 1728 push @{ $ns->{query_queue} }, @$queue;
894 1729
900 } 1735 }
901 } 1736 }
902 }, 1737 },
903); 1738);
904 1739
905=item $client->coro (\&cb) 1740=item $client->async (\&cb)
906 1741
907Create a new coroutine, running the specified callback. The coroutine will 1742Create a new coroutine, running the specified callback. The coroutine will
908be automatically cancelled when the client gets destroyed (e.g. on logout, 1743be automatically cancelled when the client gets destroyed (e.g. on logout,
909or loss of connection). 1744or loss of connection).
910 1745
911=cut 1746=cut
912 1747
913sub cf::client::coro { 1748sub cf::client::async {
914 my ($self, $cb) = @_; 1749 my ($self, $cb) = @_;
915 1750
916 my $coro; $coro = async { 1751 my $coro = &Coro::async ($cb);
917 eval { 1752
918 $cb->(); 1753 $coro->on_destroy (sub {
919 };
920 warn $@ if $@;
921 delete $self->{_coro}{$coro+0}; 1754 delete $self->{_coro}{$coro+0};
922 }; 1755 });
923 1756
924 $self->{_coro}{$coro+0} = $coro; 1757 $self->{_coro}{$coro+0} = $coro;
1758
1759 $coro
925} 1760}
926 1761
927cf::client->attach ( 1762cf::client->attach (
928 on_destroy => sub { 1763 on_destroy => sub {
929 my ($ns) = @_; 1764 my ($ns) = @_;
1093 1928
1094{ 1929{
1095 my $path = cf::localdir . "/database.pst"; 1930 my $path = cf::localdir . "/database.pst";
1096 1931
1097 sub db_load() { 1932 sub db_load() {
1098 warn "loading database $path\n";#d# remove later
1099 $DB = stat $path ? Storable::retrieve $path : { }; 1933 $DB = stat $path ? Storable::retrieve $path : { };
1100 } 1934 }
1101 1935
1102 my $pid; 1936 my $pid;
1103 1937
1104 sub db_save() { 1938 sub db_save() {
1105 warn "saving database $path\n";#d# remove later
1106 waitpid $pid, 0 if $pid; 1939 waitpid $pid, 0 if $pid;
1107 if (0 == ($pid = fork)) { 1940 if (0 == ($pid = fork)) {
1108 $DB->{_meta}{version} = 1; 1941 $DB->{_meta}{version} = 1;
1109 Storable::nstore $DB, "$path~"; 1942 Storable::nstore $DB, "$path~";
1110 rename "$path~", $path; 1943 rename "$path~", $path;
1158 open my $fh, "<:utf8", cf::confdir . "/config" 1991 open my $fh, "<:utf8", cf::confdir . "/config"
1159 or return; 1992 or return;
1160 1993
1161 local $/; 1994 local $/;
1162 *CFG = YAML::Syck::Load <$fh>; 1995 *CFG = YAML::Syck::Load <$fh>;
1996
1997 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
1998
1999 $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2000 $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
2001
2002 if (exists $CFG{mlockall}) {
2003 eval {
2004 $CFG{mlockall} ? &mlockall : &munlockall
2005 and die "WARNING: m(un)lockall failed: $!\n";
2006 };
2007 warn $@ if $@;
2008 }
1163} 2009}
1164 2010
1165sub main { 2011sub main {
2012 # we must not ever block the main coroutine
2013 local $Coro::idle = sub {
2014 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2015 async { Event::one_event };
2016 };
2017
1166 cfg_load; 2018 cfg_load;
1167 db_load; 2019 db_load;
1168 load_extensions; 2020 load_extensions;
1169 Event::loop; 2021 Event::loop;
1170} 2022}
1171 2023
1172############################################################################# 2024#############################################################################
1173# initialisation 2025# initialisation
1174 2026
1175sub _perl_reload(&) { 2027sub reload() {
1176 my ($msg) = @_; 2028 # can/must only be called in main
2029 if ($Coro::current != $Coro::main) {
2030 warn "can only reload from main coroutine\n";
2031 return;
2032 }
1177 2033
1178 $msg->("reloading..."); 2034 warn "reloading...";
2035
2036 my $guard = freeze_mainloop;
2037 cf::emergency_save;
1179 2038
1180 eval { 2039 eval {
2040 # if anything goes wrong in here, we should simply crash as we already saved
2041
1181 # cancel all watchers 2042 # cancel all watchers
1182 for (Event::all_watchers) { 2043 for (Event::all_watchers) {
1183 $_->cancel if $_->data & WF_AUTOCANCEL; 2044 $_->cancel if $_->data & WF_AUTOCANCEL;
1184 } 2045 }
1185 2046
2047 # cancel all extension coros
2048 $_->cancel for values %EXT_CORO;
2049 %EXT_CORO = ();
2050
1186 # unload all extensions 2051 # unload all extensions
1187 for (@exts) { 2052 for (@exts) {
1188 $msg->("unloading <$_>"); 2053 warn "unloading <$_>";
1189 unload_extension $_; 2054 unload_extension $_;
1190 } 2055 }
1191 2056
1192 # unload all modules loaded from $LIBDIR 2057 # unload all modules loaded from $LIBDIR
1193 while (my ($k, $v) = each %INC) { 2058 while (my ($k, $v) = each %INC) {
1194 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/; 2059 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1195 2060
1196 $msg->("removing <$k>"); 2061 warn "removing <$k>";
1197 delete $INC{$k}; 2062 delete $INC{$k};
1198 2063
1199 $k =~ s/\.pm$//; 2064 $k =~ s/\.pm$//;
1200 $k =~ s/\//::/g; 2065 $k =~ s/\//::/g;
1201 2066
1206 Symbol::delete_package $k; 2071 Symbol::delete_package $k;
1207 } 2072 }
1208 2073
1209 # sync database to disk 2074 # sync database to disk
1210 cf::db_sync; 2075 cf::db_sync;
2076 IO::AIO::flush;
1211 2077
1212 # get rid of safe::, as good as possible 2078 # get rid of safe::, as good as possible
1213 Symbol::delete_package "safe::$_" 2079 Symbol::delete_package "safe::$_"
1214 for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region); 2080 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1215 2081
1216 # remove register_script_function callbacks 2082 # remove register_script_function callbacks
1217 # TODO 2083 # TODO
1218 2084
1219 # unload cf.pm "a bit" 2085 # unload cf.pm "a bit"
1222 # don't, removes xs symbols, too, 2088 # don't, removes xs symbols, too,
1223 # and global variables created in xs 2089 # and global variables created in xs
1224 #Symbol::delete_package __PACKAGE__; 2090 #Symbol::delete_package __PACKAGE__;
1225 2091
1226 # reload cf.pm 2092 # reload cf.pm
1227 $msg->("reloading cf.pm"); 2093 warn "reloading cf.pm";
1228 require cf; 2094 require cf;
1229 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt 2095 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1230 2096
1231 # load config and database again 2097 # load config and database again
1232 cf::cfg_load; 2098 cf::cfg_load;
1233 cf::db_load; 2099 cf::db_load;
1234 2100
1235 # load extensions 2101 # load extensions
1236 $msg->("load extensions"); 2102 warn "load extensions";
1237 cf::load_extensions; 2103 cf::load_extensions;
1238 2104
1239 # reattach attachments to objects 2105 # reattach attachments to objects
1240 $msg->("reattach"); 2106 warn "reattach";
1241 _global_reattach; 2107 _global_reattach;
1242 }; 2108 };
1243 $msg->($@) if $@;
1244 2109
1245 $msg->("reloaded"); 2110 if ($@) {
2111 warn $@;
2112 warn "error while reloading, exiting.";
2113 exit 1;
2114 }
2115
2116 warn "reloaded successfully";
1246}; 2117};
1247 2118
1248sub perl_reload() { 2119#############################################################################
1249 _perl_reload { 2120
1250 warn $_[0]; 2121unless ($LINK_MAP) {
1251 print "$_[0]\n"; 2122 $LINK_MAP = cf::map::new;
1252 }; 2123
2124 $LINK_MAP->width (41);
2125 $LINK_MAP->height (41);
2126 $LINK_MAP->alloc;
2127 $LINK_MAP->path ("{link}");
2128 $LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
2129 $LINK_MAP->in_memory (MAP_IN_MEMORY);
2130
2131 # dirty hack because... archetypes are not yet loaded
2132 Event->timer (
2133 after => 2,
2134 cb => sub {
2135 $_[0]->w->cancel;
2136
2137 # provide some exits "home"
2138 my $exit = cf::object::new "exit";
2139
2140 $exit->slaying ($EMERGENCY_POSITION->[0]);
2141 $exit->stats->hp ($EMERGENCY_POSITION->[1]);
2142 $exit->stats->sp ($EMERGENCY_POSITION->[2]);
2143
2144 $LINK_MAP->insert ($exit->clone, 19, 19);
2145 $LINK_MAP->insert ($exit->clone, 19, 20);
2146 $LINK_MAP->insert ($exit->clone, 19, 21);
2147 $LINK_MAP->insert ($exit->clone, 20, 19);
2148 $LINK_MAP->insert ($exit->clone, 20, 21);
2149 $LINK_MAP->insert ($exit->clone, 21, 19);
2150 $LINK_MAP->insert ($exit->clone, 21, 20);
2151 $LINK_MAP->insert ($exit->clone, 21, 21);
2152
2153 $exit->destroy;
2154 });
2155
2156 $LINK_MAP->{deny_save} = 1;
2157 $LINK_MAP->{deny_reset} = 1;
2158
2159 $cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1253} 2160}
1254 2161
1255register "<global>", __PACKAGE__; 2162register "<global>", __PACKAGE__;
1256 2163
1257register_command "perl-reload" => sub { 2164register_command "reload" => sub {
1258 my ($who, $arg) = @_; 2165 my ($who, $arg) = @_;
1259 2166
1260 if ($who->flag (FLAG_WIZ)) { 2167 if ($who->flag (FLAG_WIZ)) {
1261 _perl_reload { 2168 $who->message ("start of reload.");
1262 warn $_[0]; 2169 reload;
1263 $who->message ($_[0]); 2170 $who->message ("end of reload.");
1264 };
1265 } 2171 }
1266}; 2172};
1267 2173
1268unshift @INC, $LIBDIR; 2174unshift @INC, $LIBDIR;
1269 2175
1270$TICK_WATCHER = Event->timer ( 2176$TICK_WATCHER = Event->timer (
2177 reentrant => 0,
1271 prio => 0, 2178 prio => 0,
1272 at => $NEXT_TICK || 1, 2179 at => $NEXT_TICK || $TICK,
1273 data => WF_AUTOCANCEL, 2180 data => WF_AUTOCANCEL,
1274 cb => sub { 2181 cb => sub {
1275 cf::server_tick; # one server iteration 2182 cf::server_tick; # one server iteration
1276 2183 $RUNTIME += $TICK;
1277 my $NOW = Event::time;
1278 $NEXT_TICK += $TICK; 2184 $NEXT_TICK += $TICK;
1279 2185
1280 # if we are delayed by four ticks or more, skip them all 2186 # if we are delayed by four ticks or more, skip them all
1281 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4; 2187 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1282 2188
1283 $TICK_WATCHER->at ($NEXT_TICK); 2189 $TICK_WATCHER->at ($NEXT_TICK);
1284 $TICK_WATCHER->start; 2190 $TICK_WATCHER->start;
1285 }, 2191 },
1286); 2192);
1287 2193
1288IO::AIO::max_poll_time $TICK * 0.2; 2194IO::AIO::max_poll_time $TICK * 0.2;
1289 2195
2196Event->io (
1290Event->io (fd => IO::AIO::poll_fileno, 2197 fd => IO::AIO::poll_fileno,
1291 poll => 'r', 2198 poll => 'r',
1292 prio => 5, 2199 prio => 5,
1293 data => WF_AUTOCANCEL, 2200 data => WF_AUTOCANCEL,
1294 cb => \&IO::AIO::poll_cb); 2201 cb => \&IO::AIO::poll_cb,
2202);
2203
2204Event->timer (
2205 data => WF_AUTOCANCEL,
2206 after => 0,
2207 interval => 10,
2208 cb => sub {
2209 (Coro::unblock_sub {
2210 write_runtime
2211 or warn "ERROR: unable to write runtime file: $!";
2212 })->();
2213 },
2214);
2215
2216END { cf::emergency_save }
1295 2217
12961 22181
1297 2219

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