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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.263 by root, Sat May 5 05:40:27 2007 UTC vs.
Revision 1.285 by root, Sun Jun 24 04:21:42 2007 UTC

90our $LINK_MAP; # the special {link} map, which is always available 90our $LINK_MAP; # the special {link} map, which is always available
91 91
92# used to convert map paths into valid unix filenames by replacing / by ∕ 92# used to convert map paths into valid unix filenames by replacing / by ∕
93our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons 93our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94 94
95our $LOAD; # a number between 0 (idle) and 1 (too many objects)
96our $LOADAVG; # same thing, but with alpha-smoothing
97our $tick_start; # for load detecting purposes
98
95binmode STDOUT; 99binmode STDOUT;
96binmode STDERR; 100binmode STDERR;
97 101
98# read virtual server time, if available 102# read virtual server time, if available
99unless ($RUNTIME || !-e "$LOCALDIR/runtime") { 103unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
139 143
140=item $cf::TICK 144=item $cf::TICK
141 145
142The interval between server ticks, in seconds. 146The interval between server ticks, in seconds.
143 147
148=item $cf::LOADAVG
149
150The current CPU load on the server (alpha-smoothed), as a value between 0
151(none) and 1 (overloaded), indicating how much time is spent on processing
152objects per tick. Healthy values are < 0.5.
153
154=item $cf::LOAD
155
156The raw value load value from the last tick.
157
144=item %cf::CFG 158=item %cf::CFG
145 159
146Configuration for the server, loaded from C</etc/crossfire/config>, or 160Configuration for the server, loaded from C</etc/crossfire/config>, or
147from wherever your confdir points to. 161from wherever your confdir points to.
148 162
173@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable'; 187@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable'; 188@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable'; 189@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable'; 190@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable'; 191@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
192@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; 193@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179 194
180# we bless all objects into (empty) derived classes to force a method lookup 195# we bless all objects into (empty) derived classes to force a method lookup
181# within the Safe compartment. 196# within the Safe compartment.
182for my $pkg (qw( 197for my $pkg (qw(
183 cf::global cf::attachable 198 cf::global cf::attachable
191} 206}
192 207
193$Event::DIED = sub { 208$Event::DIED = sub {
194 warn "error in event callback: @_"; 209 warn "error in event callback: @_";
195}; 210};
211
212#############################################################################
196 213
197=head2 UTILITY FUNCTIONS 214=head2 UTILITY FUNCTIONS
198 215
199=over 4 216=over 4
200 217
303 320
304BEGIN { *async = \&Coro::async_pool } 321BEGIN { *async = \&Coro::async_pool }
305 322
306=item cf::sync_job { BLOCK } 323=item cf::sync_job { BLOCK }
307 324
308The design of crossfire+ requires that the main coro ($Coro::main) is 325The design of Crossfire TRT requires that the main coroutine ($Coro::main)
309always able to handle events or runnable, as crossfire+ is only partly 326is always able to handle events or runnable, as Crossfire TRT is only
310reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable. 327partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
328acceptable.
311 329
312If it must be done, put the blocking parts into C<sync_job>. This will run 330If it must be done, put the blocking parts into C<sync_job>. This will run
313the given BLOCK in another coroutine while waiting for the result. The 331the given BLOCK in another coroutine while waiting for the result. The
314server will be frozen during this time, so the block should either finish 332server will be frozen during this time, so the block should either finish
315fast or be very important. 333fast or be very important.
318 336
319sub sync_job(&) { 337sub sync_job(&) {
320 my ($job) = @_; 338 my ($job) = @_;
321 339
322 if ($Coro::current == $Coro::main) { 340 if ($Coro::current == $Coro::main) {
341 my $time = Event::time;
342
323 # this is the main coro, too bad, we have to block 343 # this is the main coro, too bad, we have to block
324 # till the operation succeeds, freezing the server :/ 344 # till the operation succeeds, freezing the server :/
325 345
326 # TODO: use suspend/resume instead 346 # TODO: use suspend/resume instead
327 # (but this is cancel-safe) 347 # (but this is cancel-safe)
338 358
339 while ($busy) { 359 while ($busy) {
340 Coro::cede or Event::one_event; 360 Coro::cede or Event::one_event;
341 } 361 }
342 362
363 $time = Event::time - $time;
364
365 LOG llevError | logBacktrace, Carp::longmess "long sync job"
366 if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
367
368 $tick_start += $time; # do not account sync jobs to server load
369
343 wantarray ? @res : $res[0] 370 wantarray ? @res : $res[0]
344 } else { 371 } else {
345 # we are in another coroutine, how wonderful, everything just works 372 # we are in another coroutine, how wonderful, everything just works
346 373
347 $job->() 374 $job->()
366 $EXT_CORO{$coro+0} = $coro; 393 $EXT_CORO{$coro+0} = $coro;
367 394
368 $coro 395 $coro
369} 396}
370 397
371sub write_runtime { 398=item fork_call { }, $args
372 my $guard = cf::lock_acquire "write_runtime";
373 399
374 my $runtime = "$LOCALDIR/runtime"; 400Executes the given code block with the given arguments in a seperate
401process, returning the results. Everything must be serialisable with
402Coro::Storable. May, of course, block. Note that the executed sub may
403never block itself or use any form of Event handling.
375 404
376 warn "starting to write runtime...\n";#d# 405=cut
377 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
378 or return;
379 406
380 my $value = $cf::RUNTIME + 90 + 10; 407sub fork_call(&@) {
381 # 10 is the runtime save interval, for a monotonic clock 408 my ($cb, @args) = @_;
382 # 60 allows for the watchdog to kill the server.
383 409
384 (aio_write $fh, 0, (length $value), $value, 0) <= 0 410# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
385 and return; 411# or die "socketpair: $!";
412 pipe my $fh1, my $fh2
413 or die "pipe: $!";
386 414
387 # always fsync - this file is important 415 if (my $pid = fork) {
388 aio_fsync $fh
389 and return;
390
391 close $fh 416 close $fh2;
392 or return;
393 417
394 aio_rename "$runtime~", $runtime 418 my $res = (Coro::Handle::unblock $fh1)->readline (undef);
395 and return; 419 $res = Coro::Storable::thaw $res;
396 420
397 warn "... done writing runtime.\n";#d# 421 waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
398 422
423 die $$res unless "ARRAY" eq ref $res;
424
425 return wantarray ? @$res : $res->[-1];
426 } else {
427 reset_signals;
428 local $SIG{__WARN__};
429 local $SIG{__DIE__};
430 eval {
431 close $fh1;
432
433 my @res = eval { $cb->(@args) };
434 syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
435 };
436
437 warn $@ if $@;
438 _exit 0;
399 1 439 }
440}
441
442=item $value = cf::db_get $family => $key
443
444Returns a single value from the environment database.
445
446=item cf::db_put $family => $key => $value
447
448Stores the given C<$value> in the family. It can currently store binary
449data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
450
451=cut
452
453our $DB;
454
455sub db_init {
456 unless ($DB) {
457 $DB = BDB::db_create $DB_ENV;
458
459 cf::sync_job {
460 eval {
461 $DB->set_flags (BDB::CHKSUM);
462
463 BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
464 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
465 cf::cleanup "db_open(db): $!" if $!;
466 };
467 cf::cleanup "db_open(db): $@" if $@;
468 };
469 }
470}
471
472sub db_get($$) {
473 my $key = "$_[0]/$_[1]";
474
475 cf::sync_job {
476 BDB::db_get $DB, undef, $key, my $data;
477
478 $! ? ()
479 : $data
480 }
481}
482
483sub db_put($$$) {
484 BDB::dbreq_pri 4;
485 BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
486}
487
488=item cf::cache $id => [$paths...], $processversion => $process
489
490Generic caching function that returns the value of the resource $id,
491caching and regenerating as required.
492
493This function can block.
494
495=cut
496
497sub cache {
498 my ($id, $src, $processversion, $process) = @_;
499
500 my $meta =
501 join "\x00",
502 $processversion,
503 map {
504 aio_stat $_
505 and Carp::croak "$_: $!";
506
507 ($_, (stat _)[7,9])
508 } @$src;
509
510 my $dbmeta = db_get cache => "$id/meta";
511 if ($dbmeta ne $meta) {
512 # changed, we may need to process
513
514 my @data;
515 my $md5;
516
517 for (0 .. $#$src) {
518 0 <= aio_load $src->[$_], $data[$_]
519 or Carp::croak "$src->[$_]: $!";
520 }
521
522 # if processing is expensive, check
523 # checksum first
524 if (1) {
525 $md5 =
526 join "\x00",
527 $processversion,
528 map {
529 Coro::cede;
530 ($src->[$_], Digest::MD5::md5_hex $data[$_])
531 } 0.. $#$src;
532
533
534 my $dbmd5 = db_get cache => "$id/md5";
535 if ($dbmd5 eq $md5) {
536 db_put cache => "$id/meta", $meta;
537
538 return db_get cache => "$id/data";
539 }
540 }
541
542 my $t1 = Time::HiRes::time;
543 my $data = $process->(\@data);
544 my $t2 = Time::HiRes::time;
545
546 warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
547
548 db_put cache => "$id/data", $data;
549 db_put cache => "$id/md5" , $md5;
550 db_put cache => "$id/meta", $meta;
551
552 return $data;
553 }
554
555 db_get cache => "$id/data"
400} 556}
401 557
402=item cf::datalog type => key => value, ... 558=item cf::datalog type => key => value, ...
403 559
404Log a datalog packet of the given type with the given key-value pairs. 560Log a datalog packet of the given type with the given key-value pairs.
422attach callbacks/event handlers (a collection of which is called an "attachment") 578attach callbacks/event handlers (a collection of which is called an "attachment")
423to it. All such attachable objects support the following methods. 579to it. All such attachable objects support the following methods.
424 580
425In the following description, CLASS can be any of C<global>, C<object> 581In the following description, CLASS can be any of C<global>, C<object>
426C<player>, C<client> or C<map> (i.e. the attachable objects in 582C<player>, C<client> or C<map> (i.e. the attachable objects in
427crossfire+). 583Crossfire TRT).
428 584
429=over 4 585=over 4
430 586
431=item $attachable->attach ($attachment, key => $value...) 587=item $attachable->attach ($attachment, key => $value...)
432 588
595 $registry = $CB_TYPE[$object_type] ||= []; 751 $registry = $CB_TYPE[$object_type] ||= [];
596 752
597 } elsif ($type eq "subtype") { 753 } elsif ($type eq "subtype") {
598 defined $object_type or Carp::croak "subtype specified without type"; 754 defined $object_type or Carp::croak "subtype specified without type";
599 my $object_subtype = shift @arg; 755 my $object_subtype = shift @arg;
600 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= []; 756 $registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
601 757
602 } elsif ($type eq "package") { 758 } elsif ($type eq "package") {
603 my $pkg = shift @arg; 759 my $pkg = shift @arg;
604 760
605 while (my ($name, $id) = each %cb_id) { 761 while (my ($name, $id) = each %cb_id) {
634 _attach $registry, $klass, @attach; 790 _attach $registry, $klass, @attach;
635 } 791 }
636 792
637 $obj->{$name} = \%arg; 793 $obj->{$name} = \%arg;
638 } else { 794 } else {
639 warn "object uses attachment '$name' that is not available, postponing.\n"; 795 warn "object uses attachment '$name' which is not available, postponing.\n";
640 } 796 }
641 797
642 $obj->{_attachment}{$name} = undef; 798 $obj->{_attachment}{$name} = undef;
643} 799}
644 800
646 if (ref $_[0]) { 802 if (ref $_[0]) {
647 _object_attach @_; 803 _object_attach @_;
648 } else { 804 } else {
649 _attach shift->_attach_registry, @_; 805 _attach shift->_attach_registry, @_;
650 } 806 }
807 _recalc_want;
651}; 808};
652 809
653# all those should be optimised 810# all those should be optimised
654sub cf::attachable::detach { 811sub cf::attachable::detach {
655 my ($obj, $name) = @_; 812 my ($obj, $name) = @_;
658 delete $obj->{_attachment}{$name}; 815 delete $obj->{_attachment}{$name};
659 reattach ($obj); 816 reattach ($obj);
660 } else { 817 } else {
661 Carp::croak "cannot, currently, detach class attachments"; 818 Carp::croak "cannot, currently, detach class attachments";
662 } 819 }
820 _recalc_want;
663}; 821};
664 822
665sub cf::attachable::attached { 823sub cf::attachable::attached {
666 my ($obj, $name) = @_; 824 my ($obj, $name) = @_;
667 825
840 or return; 998 or return;
841 $av = eval { (Storable::thaw $av)->{objs} }; 999 $av = eval { (Storable::thaw $av)->{objs} };
842 } 1000 }
843 1001
844 warn sprintf "loading %s (%d)\n", 1002 warn sprintf "loading %s (%d)\n",
845 $filename, length $data, scalar @{$av || []};#d# 1003 $filename, length $data, scalar @{$av || []};
846 return ($data, $av); 1004 return ($data, $av);
847} 1005}
1006
1007=head2 COMMAND CALLBACKS
1008
1009=over 4
1010
1011=cut
848 1012
849############################################################################# 1013#############################################################################
850# command handling &c 1014# command handling &c
851 1015
852=item cf::register_command $name => \&callback($ob,$args); 1016=item cf::register_command $name => \&callback($ob,$args);
865 push @{ $COMMAND{$name} }, [$caller, $cb]; 1029 push @{ $COMMAND{$name} }, [$caller, $cb];
866} 1030}
867 1031
868=item cf::register_extcmd $name => \&callback($pl,$packet); 1032=item cf::register_extcmd $name => \&callback($pl,$packet);
869 1033
870Register a callbackf ro execution when the client sends an extcmd packet. 1034Register a callback fro execution when the client sends an extcmd packet.
871 1035
872If the callback returns something, it is sent back as if reply was being 1036If the callback returns something, it is sent back as if reply was being
873called. 1037called.
874 1038
875=cut 1039=cut
910 1074
911 cf::override; 1075 cf::override;
912 }, 1076 },
913); 1077);
914 1078
915sub load_extension {
916 my ($path) = @_;
917
918 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
919 my $base = $1;
920 my $pkg = $1;
921 $pkg =~ s/[^[:word:]]/_/g;
922 $pkg = "ext::$pkg";
923
924 warn "... loading '$path' into '$pkg'\n";
925
926 open my $fh, "<:utf8", $path
927 or die "$path: $!";
928
929 my $source =
930 "package $pkg; use strict; use utf8;\n"
931 . "#line 1 \"$path\"\n{\n"
932 . (do { local $/; <$fh> })
933 . "\n};\n1";
934
935 unless (eval $source) {
936 my $msg = $@ ? "$path: $@\n"
937 : "extension disabled.\n";
938 if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
939 warn $@;
940 warn "mandatory extension failed to load, exiting.\n";
941 exit 1;
942 }
943 die $@;
944 }
945
946 push @EXTS, $pkg;
947}
948
949sub load_extensions { 1079sub load_extensions {
1080 cf::sync_job {
1081 my %todo;
1082
950 for my $ext (<$LIBDIR/*.ext>) { 1083 for my $path (<$LIBDIR/*.ext>) {
951 next unless -r $ext; 1084 next unless -r $path;
952 eval { 1085
953 load_extension $ext; 1086 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
1087 my $base = $1;
1088 my $pkg = $1;
1089 $pkg =~ s/[^[:word:]]/_/g;
1090 $pkg = "ext::$pkg";
1091
1092 open my $fh, "<:utf8", $path
1093 or die "$path: $!";
1094
1095 my $source = do { local $/; <$fh> };
1096
1097 my %ext = (
1098 path => $path,
1099 base => $base,
1100 pkg => $pkg,
1101 );
1102
1103 $ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
1104 if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
1105
1106 $ext{source} =
1107 "package $pkg; use strict; use utf8;\n"
1108 . "#line 1 \"$path\"\n{\n"
1109 . $source
1110 . "\n};\n1";
1111
1112 $todo{$base} = \%ext;
1113 }
1114
1115 my %done;
1116 while (%todo) {
1117 my $progress;
1118
1119 while (my ($k, $v) = each %todo) {
1120 for (split /,\s*/, $v->{meta}{depends}) {
1121 goto skip
1122 unless exists $done{$_};
1123 }
1124
1125 warn "... loading '$k' into '$v->{pkg}'\n";
1126
1127 unless (eval $v->{source}) {
1128 my $msg = $@ ? "$v->{path}: $@\n"
1129 : "$v->{base}: extension inactive.\n";
1130
1131 if (exists $v->{meta}{mandatory}) {
1132 warn $msg;
1133 warn "mandatory extension failed to load, exiting.\n";
1134 exit 1;
1135 }
1136
1137 warn $msg;
1138 }
1139
1140 $done{$k} = delete $todo{$k};
1141 push @EXTS, $v->{pkg};
1142 $progress = 1;
954 1 1143 }
955 } or warn "$ext not loaded: $@"; 1144
1145 skip:
1146 die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
1147 unless $progress;
1148 }
956 } 1149 };
957} 1150}
958 1151
959############################################################################# 1152#############################################################################
1153
1154=back
960 1155
961=head2 CORE EXTENSIONS 1156=head2 CORE EXTENSIONS
962 1157
963Functions and methods that extend core crossfire objects. 1158Functions and methods that extend core crossfire objects.
964 1159
1152 } 1347 }
1153 1348
1154 \@paths 1349 \@paths
1155} 1350}
1156 1351
1352=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
1353
1354Expand crossfire pod fragments into protocol xml.
1355
1356=cut
1357
1358sub expand_cfpod {
1359 ((my $self), (local $_)) = @_;
1360
1361 # escape & and <
1362 s/&/&amp;/g;
1363 s/(?<![BIUGH])</&lt;/g;
1364
1365 # this is buggy, it needs to properly take care of nested <'s
1366
1367 1 while
1368 # replace B<>, I<>, U<> etc.
1369 s/B<([^\>]*)>/<b>$1<\/b>/
1370 || s/I<([^\>]*)>/<i>$1<\/i>/
1371 || s/U<([^\>]*)>/<u>$1<\/u>/
1372 # replace G<male|female> tags
1373 || s{G<([^>|]*)\|([^>]*)>}{
1374 $self->gender ? $2 : $1
1375 }ge
1376 # replace H<hint text>
1377 || s/H<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g;
1378
1379 # create single paragraphs (very hackish)
1380 s/(?<=\S)\n(?=\w)/ /g;
1381
1382 $_
1383}
1384
1157=item $player->ext_reply ($msgid, %msg) 1385=item $player->ext_reply ($msgid, %msg)
1158 1386
1159Sends an ext reply to the player. 1387Sends an ext reply to the player.
1160 1388
1161=cut 1389=cut
1188 1416
1189package cf::region; 1417package cf::region;
1190 1418
1191=item cf::region::find_by_path $path 1419=item cf::region::find_by_path $path
1192 1420
1193Tries to decuce the probable region for a map knowing only its path. 1421Tries to decuce the likely region for a map knowing only its path.
1194 1422
1195=cut 1423=cut
1196 1424
1197sub find_by_path($) { 1425sub find_by_path($) {
1198 my ($path) = @_; 1426 my ($path) = @_;
1272 my ($self, $merge) = @_; 1500 my ($self, $merge) = @_;
1273 1501
1274 # we have to keep some variables in memory intact 1502 # we have to keep some variables in memory intact
1275 local $self->{path}; 1503 local $self->{path};
1276 local $self->{load_path}; 1504 local $self->{load_path};
1277 local $self->{deny_save};
1278 local $self->{deny_reset};
1279 1505
1280 $self->SUPER::thawer_merge ($merge); 1506 $self->SUPER::thawer_merge ($merge);
1281} 1507}
1282 1508
1283sub normalise { 1509sub normalise {
1383 1609
1384 $_->change_map_light ($change) 1610 $_->change_map_light ($change)
1385 for grep $_->outdoor, values %cf::MAP; 1611 for grep $_->outdoor, values %cf::MAP;
1386} 1612}
1387 1613
1614sub decay_objects {
1615 my ($self) = @_;
1616
1617 return if $self->{deny_reset};
1618
1619 $self->do_decay_objects;
1620}
1621
1388sub unlink_save { 1622sub unlink_save {
1389 my ($self) = @_; 1623 my ($self) = @_;
1390 1624
1391 utf8::encode (my $save = $self->save_path); 1625 utf8::encode (my $save = $self->save_path);
1392 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save; 1626 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1448 $self->load_header_orig 1682 $self->load_header_orig
1449 or return; 1683 or return;
1450 $self->prepare_orig; 1684 $self->prepare_orig;
1451 } 1685 }
1452 1686
1687 $self->{deny_reset} = 1
1688 if $self->no_reset;
1689
1453 $self->default_region (cf::region::find_by_path $self->{path}) 1690 $self->default_region (cf::region::find_by_path $self->{path})
1454 unless $self->default_region; 1691 unless $self->default_region;
1455 1692
1456 1 1693 1
1457} 1694}
1472 $map->{last_save} = $cf::RUNTIME; 1709 $map->{last_save} = $cf::RUNTIME;
1473 1710
1474 $map->load_header 1711 $map->load_header
1475 or return; 1712 or return;
1476 1713
1477 if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?) 1714 if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1478 # doing this can freeze the server in a sync job, obviously 1715 # doing this can freeze the server in a sync job, obviously
1479 #$cf::WAIT_FOR_TICK->wait; 1716 #$cf::WAIT_FOR_TICK->wait;
1480 $map->reset; 1717 $map->reset;
1481 undef $guard; 1718 undef $guard;
1482 return find $path; 1719 return find $path;
1549 my ($self, $ob) = @_; 1786 my ($self, $ob) = @_;
1550 1787
1551 return find "~" . $ob->name . "/" . $self->{path} 1788 return find "~" . $ob->name . "/" . $self->{path}
1552 if $self->per_player; 1789 if $self->per_player;
1553 1790
1791# return find "?party/" . $ob->name . "/" . $self->{path}
1792# if $self->per_party;
1793
1554 $self 1794 $self
1555} 1795}
1556 1796
1557# find and load all maps in the 3x3 area around a map 1797# find and load all maps in the 3x3 area around a map
1558sub load_diag { 1798sub load_diag {
1668 1908
1669sub reset_at { 1909sub reset_at {
1670 my ($self) = @_; 1910 my ($self) = @_;
1671 1911
1672 # TODO: safety, remove and allow resettable per-player maps 1912 # TODO: safety, remove and allow resettable per-player maps
1673 return 1e99 if $self->isa ("ext::map_per_player");#d#
1674 return 1e99 if $self->{deny_reset}; 1913 return 1e99 if $self->{deny_reset};
1675 1914
1676 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access; 1915 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1677 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET; 1916 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1678 1917
1689 my ($self) = @_; 1928 my ($self) = @_;
1690 1929
1691 my $lock = cf::lock_acquire "map_data:$self->{path}"; 1930 my $lock = cf::lock_acquire "map_data:$self->{path}";
1692 1931
1693 return if $self->players; 1932 return if $self->players;
1694 return if $self->isa ("ext::map_per_player");#d#
1695 1933
1696 warn "resetting map ", $self->path;#d# 1934 warn "resetting map ", $self->path;
1697 1935
1698 $self->in_memory (cf::MAP_SWAPPED); 1936 $self->in_memory (cf::MAP_SWAPPED);
1699 1937
1700 # need to save uniques path 1938 # need to save uniques path
1701 unless ($self->{deny_save}) { 1939 unless ($self->{deny_save}) {
1733 $cf::MAP{$self->path} = $self; 1971 $cf::MAP{$self->path} = $self;
1734 1972
1735 $self->reset; # polite request, might not happen 1973 $self->reset; # polite request, might not happen
1736} 1974}
1737 1975
1976=item $maps = cf::map::tmp_maps
1977
1978Returns an arrayref with all map paths of currently instantiated and saved
1979maps. May block.
1980
1981=cut
1982
1983sub tmp_maps() {
1984 [
1985 map {
1986 utf8::decode $_;
1987 /\.map$/
1988 ? normalise $_
1989 : ()
1990 } @{ aio_readdir $TMPDIR or [] }
1991 ]
1992}
1993
1994=item $maps = cf::map::random_maps
1995
1996Returns an arrayref with all map paths of currently instantiated and saved
1997random maps. May block.
1998
1999=cut
2000
2001sub random_maps() {
2002 [
2003 map {
2004 utf8::decode $_;
2005 /\.map$/
2006 ? normalise "?random/$_"
2007 : ()
2008 } @{ aio_readdir $RANDOMDIR or [] }
2009 ]
2010}
2011
1738=item cf::map::unique_maps 2012=item cf::map::unique_maps
1739 2013
1740Returns an arrayref of paths of all shared maps that have 2014Returns an arrayref of paths of all shared maps that have
1741instantiated unique items. May block. 2015instantiated unique items. May block.
1742 2016
1743=cut 2017=cut
1744 2018
1745sub unique_maps() { 2019sub unique_maps() {
1746 my $files = aio_readdir $UNIQUEDIR 2020 [
1747 or return; 2021 map {
1748
1749 my @paths;
1750
1751 for (@$files) {
1752 utf8::decode $_; 2022 utf8::decode $_;
1753 next if /\.pst$/; 2023 /\.map$/
1754 next unless /^$PATH_SEP/o; 2024 ? normalise $_
1755 2025 : ()
1756 push @paths, cf::map::normalise $_; 2026 } @{ aio_readdir $UNIQUEDIR or [] }
1757 } 2027 ]
1758
1759 \@paths
1760} 2028}
1761 2029
1762package cf; 2030package cf;
1763 2031
1764=back 2032=back
1810 2078
1811 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4; 2079 $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1812 2080
1813 if ($self->{record_replies}) { 2081 if ($self->{record_replies}) {
1814 push @{ $self->{record_replies} }, [$npc, $msg, $flags]; 2082 push @{ $self->{record_replies} }, [$npc, $msg, $flags];
2083
1815 } else { 2084 } else {
2085 my $pl = $self->contr;
2086
2087 if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
2088 my $diag = $pl->{npc_dialog};
2089 $diag->{pl}->ext_reply (
2090 $diag->{id},
2091 msgtype => "reply",
2092 msg => $diag->{pl}->expand_cfpod ($msg),
2093 add_topics => []
2094 );
2095
2096 } else {
1816 $msg = $npc->name . " says: $msg" if $npc; 2097 $msg = $npc->name . " says: $msg" if $npc;
1817 $self->message ($msg, $flags); 2098 $self->message ($msg, $flags);
2099 }
1818 } 2100 }
1819} 2101}
1820 2102
1821=item $player_object->may ("access") 2103=item $player_object->may ("access")
1822 2104
1870 $self->deactivate_recursive; 2152 $self->deactivate_recursive;
1871 2153
1872 return if UNIVERSAL::isa $self->map, "ext::map_link"; 2154 return if UNIVERSAL::isa $self->map, "ext::map_link";
1873 2155
1874 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y] 2156 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1875 if $self->map; 2157 if $self->map && $self->map->{path} ne "{link}";
1876 2158
1877 $self->enter_map ($LINK_MAP || link_map, 10, 10); 2159 $self->enter_map ($LINK_MAP || link_map, 10, 10);
1878} 2160}
1879 2161
1880sub cf::object::player::leave_link { 2162sub cf::object::player::leave_link {
1881 my ($self, $map, $x, $y) = @_; 2163 my ($self, $map, $x, $y) = @_;
2164
2165 return unless $self->contr->active;
1882 2166
1883 my $link_pos = delete $self->{_link_pos}; 2167 my $link_pos = delete $self->{_link_pos};
1884 2168
1885 unless ($map) { 2169 unless ($map) {
1886 # restore original map position 2170 # restore original map position
1909 2193
1910 local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext 2194 local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1911 $self->enter_map ($map, $x, $y); 2195 $self->enter_map ($map, $x, $y);
1912} 2196}
1913 2197
1914cf::player->attach (
1915 on_logout => sub {
1916 my ($pl) = @_;
1917
1918 # abort map switching before logout
1919 if ($pl->ob->{_link_pos}) {
1920 cf::sync_job {
1921 $pl->ob->leave_link
1922 };
1923 }
1924 },
1925 on_login => sub {
1926 my ($pl) = @_;
1927
1928 # try to abort aborted map switching on player login :)
1929 # should happen only on crashes
1930 if ($pl->ob->{_link_pos}) {
1931 $pl->ob->enter_link;
1932 (async {
1933 $pl->ob->reply (undef,
1934 "There was an internal problem at your last logout, "
1935 . "the server will try to bring you to your intended destination in a second.",
1936 cf::NDI_RED);
1937 # we need this sleep as the login has a concurrent enter_exit running
1938 # and this sleep increases chances of the player not ending up in scorn
1939 Coro::Timer::sleep 1;
1940 $pl->ob->leave_link;
1941 })->prio (2);
1942 }
1943 },
1944);
1945
1946=item $player_object->goto ($path, $x, $y) 2198=item $player_object->goto ($path, $x, $y[, $check->($map)])
1947 2199
2200Moves the player to the given map-path and coordinates by first freezing
2201her, loading and preparing them map, calling the provided $check callback
2202that has to return the map if sucecssful, and then unfreezes the player on
2203the new (success) or old (failed) map position.
2204
1948=cut 2205=cut
2206
2207our $GOTOGEN;
1949 2208
1950sub cf::object::player::goto { 2209sub cf::object::player::goto {
1951 my ($self, $path, $x, $y) = @_; 2210 my ($self, $path, $x, $y, $check) = @_;
2211
2212 # do generation counting so two concurrent goto's will be executed in-order
2213 my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1952 2214
1953 $self->enter_link; 2215 $self->enter_link;
1954 2216
1955 (async { 2217 (async {
1956 my $map = eval { 2218 my $map = eval {
1957 my $map = cf::map::find $path; 2219 my $map = cf::map::find $path;
2220
2221 if ($map) {
1958 $map = $map->customise_for ($self) if $map; 2222 $map = $map->customise_for ($self);
2223 $map = $check->($map) if $check && $map;
2224 } else {
2225 $self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
2226 }
2227
1959 $map 2228 $map
2229 };
2230
2231 if ($@) {
2232 $self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
2233 LOG llevError | logBacktrace, Carp::longmess $@;
1960 } or 2234 }
1961 $self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1962 2235
2236 if ($gen == $self->{_goto_generation}) {
2237 delete $self->{_goto_generation};
1963 $self->leave_link ($map, $x, $y); 2238 $self->leave_link ($map, $x, $y);
2239 }
1964 })->prio (1); 2240 })->prio (1);
1965} 2241}
1966 2242
1967=item $player_object->enter_exit ($exit_object) 2243=item $player_object->enter_exit ($exit_object)
1968 2244
2071sub cf::client::send_drawinfo { 2347sub cf::client::send_drawinfo {
2072 my ($self, $text, $flags) = @_; 2348 my ($self, $text, $flags) = @_;
2073 2349
2074 utf8::encode $text; 2350 utf8::encode $text;
2075 $self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text); 2351 $self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2352}
2353
2354=item $client->send_msg ($color, $type, $msg, [extra...])
2355
2356Send a drawinfo or msg packet to the client, formatting the msg for the
2357client if neccessary. C<$type> should be a string identifying the type of
2358the message, with C<log> being the default. If C<$color> is negative, suppress
2359the message unless the client supports the msg packet.
2360
2361=cut
2362
2363sub cf::client::send_msg {
2364 my ($self, $color, $type, $msg, @extra) = @_;
2365
2366 $msg = $self->pl->expand_cfpod ($msg);
2367
2368 if ($self->can_msg) {
2369 $self->send_packet ("msg " . cf::to_json [$color, $type, $msg, @extra]);
2370 } else {
2371 # replace some tags by gcfclient-compatible ones
2372 for ($msg) {
2373 1 while
2374 s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
2375 || s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
2376 || s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
2377 || s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
2378 || s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
2379 }
2380
2381 if ($color >= 0) {
2382 if (0 && $msg =~ /\[/) {
2383 $self->send_packet ("drawextinfo $color 4 0 $msg")
2384 } else {
2385 s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
2386 $self->send_packet ("drawinfo $color $msg")
2387 }
2388 }
2389 }
2076} 2390}
2077 2391
2078=item $client->ext_event ($type, %msg) 2392=item $client->ext_event ($type, %msg)
2079 2393
2080Sends an exti event to the client. 2394Sends an exti event to the client.
2282=back 2596=back
2283 2597
2284=cut 2598=cut
2285 2599
2286############################################################################# 2600#############################################################################
2287
2288=head2 EXTENSION DATABASE SUPPORT
2289
2290Crossfire maintains a very simple database for extension use. It can
2291currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2292convert to/from binary).
2293
2294The parameter C<$family> should best start with the name of the extension
2295using it, it should be unique.
2296
2297=over 4
2298
2299=item $value = cf::db_get $family => $key
2300
2301Returns a single value from the database.
2302
2303=item cf::db_put $family => $key => $value
2304
2305Stores the given C<$value> in the family.
2306
2307=cut
2308
2309our $DB;
2310
2311sub db_init {
2312 unless ($DB) {
2313 $DB = BDB::db_create $DB_ENV;
2314
2315 cf::sync_job {
2316 eval {
2317 $DB->set_flags (BDB::CHKSUM);
2318
2319 BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2320 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2321 cf::cleanup "db_open(db): $!" if $!;
2322 };
2323 cf::cleanup "db_open(db): $@" if $@;
2324 };
2325 }
2326}
2327
2328sub db_get($$) {
2329 my $key = "$_[0]/$_[1]";
2330
2331 cf::sync_job {
2332 BDB::db_get $DB, undef, $key, my $data;
2333
2334 $! ? ()
2335 : $data
2336 }
2337}
2338
2339sub db_put($$$) {
2340 BDB::dbreq_pri 4;
2341 BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2342}
2343
2344=item cf::cache $id => [$paths...], $processversion => $process
2345
2346Generic caching function that returns the value of the resource $id,
2347caching and regenerating as required.
2348
2349This function can block.
2350
2351=cut
2352
2353sub cache {
2354 my ($id, $src, $processversion, $process) = @_;
2355
2356 my $meta =
2357 join "\x00",
2358 $processversion,
2359 map {
2360 aio_stat $_
2361 and Carp::croak "$_: $!";
2362
2363 ($_, (stat _)[7,9])
2364 } @$src;
2365
2366 my $dbmeta = db_get cache => "$id/meta";
2367 if ($dbmeta ne $meta) {
2368 # changed, we may need to process
2369
2370 my @data;
2371 my $md5;
2372
2373 for (0 .. $#$src) {
2374 0 <= aio_load $src->[$_], $data[$_]
2375 or Carp::croak "$src->[$_]: $!";
2376 }
2377
2378 # if processing is expensive, check
2379 # checksum first
2380 if (1) {
2381 $md5 =
2382 join "\x00",
2383 $processversion,
2384 map {
2385 Coro::cede;
2386 ($src->[$_], Digest::MD5::md5_hex $data[$_])
2387 } 0.. $#$src;
2388
2389
2390 my $dbmd5 = db_get cache => "$id/md5";
2391 if ($dbmd5 eq $md5) {
2392 db_put cache => "$id/meta", $meta;
2393
2394 return db_get cache => "$id/data";
2395 }
2396 }
2397
2398 my $t1 = Time::HiRes::time;
2399 my $data = $process->(\@data);
2400 my $t2 = Time::HiRes::time;
2401
2402 warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2403
2404 db_put cache => "$id/data", $data;
2405 db_put cache => "$id/md5" , $md5;
2406 db_put cache => "$id/meta", $meta;
2407
2408 return $data;
2409 }
2410
2411 db_get cache => "$id/data"
2412}
2413
2414=item fork_call { }, $args
2415
2416Executes the given code block with the given arguments in a seperate
2417process, returning the results. Everything must be serialisable with
2418Coro::Storable. May, of course, block. Note that the executed sub may
2419never block itself or use any form of Event handling.
2420
2421=cut
2422
2423sub fork_call(&@) {
2424 my ($cb, @args) = @_;
2425
2426# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2427# or die "socketpair: $!";
2428 pipe my $fh1, my $fh2
2429 or die "pipe: $!";
2430
2431 if (my $pid = fork) {
2432 close $fh2;
2433
2434 my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2435 $res = Coro::Storable::thaw $res;
2436
2437 waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2438
2439 die $$res unless "ARRAY" eq ref $res;
2440
2441 return wantarray ? @$res : $res->[-1];
2442 } else {
2443 reset_signals;
2444 local $SIG{__WARN__};
2445 local $SIG{__DIE__};
2446 eval {
2447 close $fh1;
2448
2449 my @res = eval { $cb->(@args) };
2450 syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2451 };
2452
2453 warn $@ if $@;
2454 _exit 0;
2455 }
2456}
2457
2458
2459
2460#############################################################################
2461# the server's init and main functions 2601# the server's init and main functions
2462 2602
2463sub load_facedata($) { 2603sub load_facedata($) {
2464 my ($path) = @_; 2604 my ($path) = @_;
2465 2605
2535sub reload_resources { 2675sub reload_resources {
2536 warn "reloading resource files...\n"; 2676 warn "reloading resource files...\n";
2537 2677
2538 reload_regions; 2678 reload_regions;
2539 reload_facedata; 2679 reload_facedata;
2680 #reload_archetypes;#d#
2540 reload_archetypes; 2681 reload_archetypes;
2541 reload_treasures; 2682 reload_treasures;
2542 2683
2543 warn "finished reloading resource files\n"; 2684 warn "finished reloading resource files\n";
2544} 2685}
2601 }, 2742 },
2602 ); 2743 );
2603 } 2744 }
2604} 2745}
2605 2746
2747sub write_runtime {
2748 my $runtime = "$LOCALDIR/runtime";
2749
2750 # first touch the runtime file to show we are still running:
2751 # the fsync below can take a very very long time.
2752
2753 IO::AIO::aio_utime $runtime, undef, undef;
2754
2755 my $guard = cf::lock_acquire "write_runtime";
2756
2757 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
2758 or return;
2759
2760 my $value = $cf::RUNTIME + 90 + 10;
2761 # 10 is the runtime save interval, for a monotonic clock
2762 # 60 allows for the watchdog to kill the server.
2763
2764 (aio_write $fh, 0, (length $value), $value, 0) <= 0
2765 and return;
2766
2767 # always fsync - this file is important
2768 aio_fsync $fh
2769 and return;
2770
2771 # touch it again to show we are up-to-date
2772 aio_utime $fh, undef, undef;
2773
2774 close $fh
2775 or return;
2776
2777 aio_rename "$runtime~", $runtime
2778 and return;
2779
2780 warn "runtime file written.\n";
2781
2782 1
2783}
2784
2606sub emergency_save() { 2785sub emergency_save() {
2607 my $freeze_guard = cf::freeze_mainloop; 2786 my $freeze_guard = cf::freeze_mainloop;
2608 2787
2609 warn "enter emergency perl save\n"; 2788 warn "enter emergency perl save\n";
2610 2789
2814 my $signal = new Coro::Signal; 2993 my $signal = new Coro::Signal;
2815 push @WAIT_FOR_TICK_BEGIN, $signal; 2994 push @WAIT_FOR_TICK_BEGIN, $signal;
2816 $signal->wait; 2995 $signal->wait;
2817} 2996}
2818 2997
2998 my $min = 1e6;#d#
2999 my $avg = 10;
2819$TICK_WATCHER = Event->timer ( 3000$TICK_WATCHER = Event->timer (
2820 reentrant => 0, 3001 reentrant => 0,
2821 parked => 1, 3002 parked => 1,
2822 prio => 0, 3003 prio => 0,
2823 at => $NEXT_TICK || $TICK, 3004 at => $NEXT_TICK || $TICK,
2827 Carp::cluck "major BUG: server tick called outside of main coro, skipping it" 3008 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2828 unless ++$bug_warning > 10; 3009 unless ++$bug_warning > 10;
2829 return; 3010 return;
2830 } 3011 }
2831 3012
2832 $NOW = Event::time; 3013 $NOW = $tick_start = Event::time;
2833 3014
2834 cf::server_tick; # one server iteration 3015 cf::server_tick; # one server iteration
3016
3017 0 && sync_job {#d#
3018 for(1..10) {
3019 my $t = Event::time;
3020 my $map = my $map = new_from_path cf::map "/tmp/x.map"
3021 or die;
3022
3023 $map->width (50);
3024 $map->height (50);
3025 $map->alloc;
3026 $map->_load_objects ("/tmp/x.map", 1);
3027 my $t = Event::time - $t;
3028
3029 #next unless $t < 0.0013;#d#
3030 if ($t < $min) {
3031 $min = $t;
3032 }
3033 $avg = $avg * 0.99 + $t * 0.01;
3034 }
3035 warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
3036 exit 0;
3037 # 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
3038 };
2835 3039
2836 $RUNTIME += $TICK; 3040 $RUNTIME += $TICK;
2837 $NEXT_TICK += $TICK; 3041 $NEXT_TICK += $TICK;
2838 3042
2839 if ($NOW >= $NEXT_RUNTIME_WRITE) { 3043 if ($NOW >= $NEXT_RUNTIME_WRITE) {
2845 } 3049 }
2846 3050
2847# my $AFTER = Event::time; 3051# my $AFTER = Event::time;
2848# warn $AFTER - $NOW;#d# 3052# warn $AFTER - $NOW;#d#
2849 3053
3054 if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
3055 $sig->send;
3056 }
3057 while (my $sig = shift @WAIT_FOR_TICK) {
3058 $sig->send;
3059 }
3060
3061 $NOW = Event::time;
3062
2850 # if we are delayed by four ticks or more, skip them all 3063 # if we are delayed by four ticks or more, skip them all
2851 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; 3064 $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2852 3065
2853 $TICK_WATCHER->at ($NEXT_TICK); 3066 $TICK_WATCHER->at ($NEXT_TICK);
2854 $TICK_WATCHER->start; 3067 $TICK_WATCHER->start;
2855 3068
2856 if (my $sig = shift @WAIT_FOR_TICK_BEGIN) { 3069 $LOAD = ($NOW - $tick_start) / $TICK;
2857 $sig->send; 3070 $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2858 }
2859 while (my $sig = shift @WAIT_FOR_TICK) {
2860 $sig->send;
2861 }
2862 3071
2863 _post_tick; 3072 _post_tick;
3073
3074
2864 }, 3075 },
2865); 3076);
2866 3077
2867{ 3078{
2868 BDB::max_poll_time $TICK * 0.1; 3079 BDB::max_poll_time $TICK * 0.1;

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