| … | |
… | |
| 5 | use Storable; |
5 | use Storable; |
| 6 | use Opcode; |
6 | use Opcode; |
| 7 | use Safe; |
7 | use Safe; |
| 8 | use Safe::Hole; |
8 | use Safe::Hole; |
| 9 | |
9 | |
|
|
10 | use IO::AIO (); |
|
|
11 | use YAML::Syck (); |
| 10 | use Time::HiRes; |
12 | use Time::HiRes; |
| 11 | use Event; |
13 | use Event; |
| 12 | $Event::Eval = 1; # no idea why this is required, but it is |
14 | $Event::Eval = 1; # no idea why this is required, but it is |
| 13 | |
15 | |
|
|
16 | # work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode? |
|
|
17 | $YAML::Syck::ImplicitUnicode = 1; |
|
|
18 | |
| 14 | use strict; |
19 | use strict; |
| 15 | |
20 | |
| 16 | _init_vars; |
21 | _init_vars; |
| 17 | |
22 | |
| 18 | our %COMMAND = (); |
23 | our %COMMAND = (); |
| … | |
… | |
| 20 | our $LIBDIR = maps_directory "perl"; |
25 | our $LIBDIR = maps_directory "perl"; |
| 21 | |
26 | |
| 22 | our $TICK = MAX_TIME * 1e-6; |
27 | our $TICK = MAX_TIME * 1e-6; |
| 23 | our $TICK_WATCHER; |
28 | our $TICK_WATCHER; |
| 24 | our $NEXT_TICK; |
29 | our $NEXT_TICK; |
|
|
30 | |
|
|
31 | our %CFG; |
|
|
32 | |
|
|
33 | our $uptime; |
|
|
34 | |
|
|
35 | $uptime ||= time; |
|
|
36 | |
|
|
37 | ############################################################################# |
|
|
38 | |
|
|
39 | =head2 GLOBAL VARIABLES |
|
|
40 | |
|
|
41 | =over 4 |
|
|
42 | |
|
|
43 | =item $cf::LIBDIR |
|
|
44 | |
|
|
45 | The perl library directory, where extensions and cf-specific modules can |
|
|
46 | be found. It will be added to C<@INC> automatically. |
|
|
47 | |
|
|
48 | =item $cf::TICK |
|
|
49 | |
|
|
50 | The interval between server ticks, in seconds. |
|
|
51 | |
|
|
52 | =item %cf::CFG |
|
|
53 | |
|
|
54 | Configuration for the server, loaded from C</etc/crossfire/config>, or |
|
|
55 | from wherever your confdir points to. |
|
|
56 | |
|
|
57 | =back |
|
|
58 | |
|
|
59 | =cut |
| 25 | |
60 | |
| 26 | BEGIN { |
61 | BEGIN { |
| 27 | *CORE::GLOBAL::warn = sub { |
62 | *CORE::GLOBAL::warn = sub { |
| 28 | my $msg = join "", @_; |
63 | my $msg = join "", @_; |
| 29 | $msg .= "\n" |
64 | $msg .= "\n" |
| … | |
… | |
| 51 | my @exts; |
86 | my @exts; |
| 52 | my @hook; |
87 | my @hook; |
| 53 | my %command; |
88 | my %command; |
| 54 | my %extcmd; |
89 | my %extcmd; |
| 55 | |
90 | |
| 56 | ############################################################################# |
91 | =head2 UTILITY FUNCTIONS |
| 57 | # utility functions |
92 | |
|
|
93 | =over 4 |
|
|
94 | |
|
|
95 | =cut |
| 58 | |
96 | |
| 59 | use JSON::Syck (); # TODO# replace by JSON::PC once working |
97 | use JSON::Syck (); # TODO# replace by JSON::PC once working |
|
|
98 | |
|
|
99 | =item $ref = cf::from_json $json |
|
|
100 | |
|
|
101 | Converts a JSON string into the corresponding perl data structure. |
|
|
102 | |
|
|
103 | =cut |
| 60 | |
104 | |
| 61 | sub from_json($) { |
105 | sub from_json($) { |
| 62 | $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs |
106 | $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs |
| 63 | JSON::Syck::Load $_[0] |
107 | JSON::Syck::Load $_[0] |
| 64 | } |
108 | } |
| 65 | |
109 | |
|
|
110 | =item $json = cf::to_json $ref |
|
|
111 | |
|
|
112 | Converts a perl data structure into its JSON representation. |
|
|
113 | |
|
|
114 | =cut |
|
|
115 | |
| 66 | sub to_json($) { |
116 | sub to_json($) { |
| 67 | $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs |
117 | $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs |
| 68 | JSON::Syck::Dump $_[0] |
118 | JSON::Syck::Dump $_[0] |
| 69 | } |
119 | } |
| 70 | |
120 | |
| 71 | ############################################################################# |
121 | =back |
| 72 | # "new" plug-in system |
|
|
| 73 | |
122 | |
|
|
123 | =cut |
|
|
124 | |
|
|
125 | ############################################################################# |
|
|
126 | |
| 74 | =head3 EVENTS AND OBJECT ATTACHMENTS |
127 | =head2 EVENTS AND OBJECT ATTACHMENTS |
| 75 | |
128 | |
| 76 | =over 4 |
129 | =over 4 |
| 77 | |
130 | |
| 78 | =item $object->attach ($attachment, key => $value...) |
131 | =item $object->attach ($attachment, key => $value...) |
| 79 | |
132 | |
| … | |
… | |
| 379 | removed in future versions), and there is no public API to access override |
432 | removed in future versions), and there is no public API to access override |
| 380 | results (if you must, access C<@cf::invoke_results> directly). |
433 | results (if you must, access C<@cf::invoke_results> directly). |
| 381 | |
434 | |
| 382 | =back |
435 | =back |
| 383 | |
436 | |
| 384 | =head2 methods valid for all pointers |
437 | =cut |
|
|
438 | |
|
|
439 | ############################################################################# |
|
|
440 | |
|
|
441 | =head2 METHODS VALID FOR ALL CORE OBJECTS |
| 385 | |
442 | |
| 386 | =over 4 |
443 | =over 4 |
| 387 | |
444 | |
| 388 | =item $object->valid |
445 | =item $object->valid, $player->valid, $map->valid |
| 389 | |
|
|
| 390 | =item $player->valid |
|
|
| 391 | |
|
|
| 392 | =item $map->valid |
|
|
| 393 | |
446 | |
| 394 | Just because you have a perl object does not mean that the corresponding |
447 | Just because you have a perl object does not mean that the corresponding |
| 395 | C-level object still exists. If you try to access an object that has no |
448 | C-level object still exists. If you try to access an object that has no |
| 396 | valid C counterpart anymore you get an exception at runtime. This method |
449 | valid C counterpart anymore you get an exception at runtime. This method |
| 397 | can be used to test for existence of the C object part without causing an |
450 | can be used to test for existence of the C object part without causing an |
| … | |
… | |
| 470 | unlink $filename; |
523 | unlink $filename; |
| 471 | unlink "$filename.pst"; |
524 | unlink "$filename.pst"; |
| 472 | } |
525 | } |
| 473 | } |
526 | } |
| 474 | |
527 | |
|
|
528 | sub object_freezer_as_string { |
|
|
529 | my ($rdata, $objs) = @_; |
|
|
530 | |
|
|
531 | use Data::Dumper; |
|
|
532 | |
|
|
533 | $$rdata . Dumper $objs |
|
|
534 | } |
|
|
535 | |
| 475 | sub object_thawer_load { |
536 | sub object_thawer_load { |
| 476 | my ($filename) = @_; |
537 | my ($filename) = @_; |
| 477 | |
538 | |
| 478 | local $/; |
539 | local $/; |
| 479 | |
540 | |
| … | |
… | |
| 581 | . "#line 1 \"$path\"\n{\n" |
642 | . "#line 1 \"$path\"\n{\n" |
| 582 | . (do { local $/; <$fh> }) |
643 | . (do { local $/; <$fh> }) |
| 583 | . "\n};\n1"; |
644 | . "\n};\n1"; |
| 584 | |
645 | |
| 585 | eval $source |
646 | eval $source |
| 586 | or die "$path: $@"; |
647 | or die $@ ? "$path: $@\n" |
|
|
648 | : "extension disabled.\n"; |
| 587 | |
649 | |
| 588 | push @exts, $pkg; |
650 | push @exts, $pkg; |
| 589 | $ext_pkg{$base} = $pkg; |
651 | $ext_pkg{$base} = $pkg; |
| 590 | |
652 | |
| 591 | # no strict 'refs'; |
653 | # no strict 'refs'; |
| … | |
… | |
| 704 | } |
766 | } |
| 705 | }, |
767 | }, |
| 706 | ; |
768 | ; |
| 707 | |
769 | |
| 708 | ############################################################################# |
770 | ############################################################################# |
| 709 | # core extensions - in perl |
771 | |
|
|
772 | =head2 CORE EXTENSIONS |
|
|
773 | |
|
|
774 | Functions and methods that extend core crossfire objects. |
|
|
775 | |
|
|
776 | =over 4 |
| 710 | |
777 | |
| 711 | =item cf::player::exists $login |
778 | =item cf::player::exists $login |
| 712 | |
779 | |
| 713 | Returns true when the given account exists. |
780 | Returns true when the given account exists. |
| 714 | |
781 | |
| … | |
… | |
| 717 | sub cf::player::exists($) { |
784 | sub cf::player::exists($) { |
| 718 | cf::player::find $_[0] |
785 | cf::player::find $_[0] |
| 719 | or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2; |
786 | or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2; |
| 720 | } |
787 | } |
| 721 | |
788 | |
| 722 | =item $player->reply ($npc, $msg[, $flags]) |
789 | =item $player_object->reply ($npc, $msg[, $flags]) |
| 723 | |
790 | |
| 724 | Sends a message to the player, as if the npc C<$npc> replied. C<$npc> |
791 | Sends a message to the player, as if the npc C<$npc> replied. C<$npc> |
| 725 | can be C<undef>. Does the right thing when the player is currently in a |
792 | can be C<undef>. Does the right thing when the player is currently in a |
| 726 | dialogue with the given NPC character. |
793 | dialogue with the given NPC character. |
| 727 | |
794 | |
| … | |
… | |
| 754 | $msg{msgid} = $id; |
821 | $msg{msgid} = $id; |
| 755 | |
822 | |
| 756 | $self->send ("ext " . to_json \%msg); |
823 | $self->send ("ext " . to_json \%msg); |
| 757 | } |
824 | } |
| 758 | |
825 | |
|
|
826 | =item $player_object->may ("access") |
|
|
827 | |
|
|
828 | Returns wether the given player is authorized to access resource "access" |
|
|
829 | (e.g. "command_wizcast"). |
|
|
830 | |
|
|
831 | =cut |
|
|
832 | |
|
|
833 | sub cf::object::player::may { |
|
|
834 | my ($self, $access) = @_; |
|
|
835 | |
|
|
836 | $self->flag (cf::FLAG_WIZ) || |
|
|
837 | (ref $cf::CFG{"may_$access"} |
|
|
838 | ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}} |
|
|
839 | : $cf::CFG{"may_$access"}) |
|
|
840 | } |
|
|
841 | |
|
|
842 | =cut |
|
|
843 | |
| 759 | ############################################################################# |
844 | ############################################################################# |
| 760 | # map scripting support |
845 | |
|
|
846 | =head2 SAFE SCRIPTING |
|
|
847 | |
|
|
848 | Functions that provide a safe environment to compile and execute |
|
|
849 | snippets of perl code without them endangering the safety of the server |
|
|
850 | itself. Looping constructs, I/O operators and other built-in functionality |
|
|
851 | is not available in the safe scripting environment, and the number of |
|
|
852 | functions and methods that can be called is greatly reduced. |
|
|
853 | |
|
|
854 | =cut |
| 761 | |
855 | |
| 762 | our $safe = new Safe "safe"; |
856 | our $safe = new Safe "safe"; |
| 763 | our $safe_hole = new Safe::Hole; |
857 | our $safe_hole = new Safe::Hole; |
| 764 | |
858 | |
| 765 | $SIG{FPE} = 'IGNORE'; |
859 | $SIG{FPE} = 'IGNORE'; |
| 766 | |
860 | |
| 767 | $safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time)); |
861 | $safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time)); |
| 768 | |
862 | |
| 769 | # here we export the classes and methods available to script code |
863 | # here we export the classes and methods available to script code |
|
|
864 | |
|
|
865 | =pod |
|
|
866 | |
|
|
867 | The following fucntions and emthods are available within a safe environment: |
|
|
868 | |
|
|
869 | cf::object contr pay_amount pay_player |
|
|
870 | cf::object::player player |
|
|
871 | cf::player peaceful |
|
|
872 | |
|
|
873 | =cut |
| 770 | |
874 | |
| 771 | for ( |
875 | for ( |
| 772 | ["cf::object" => qw(contr pay_amount pay_player)], |
876 | ["cf::object" => qw(contr pay_amount pay_player)], |
| 773 | ["cf::object::player" => qw(player)], |
877 | ["cf::object::player" => qw(player)], |
| 774 | ["cf::player" => qw(peaceful)], |
878 | ["cf::player" => qw(peaceful)], |
| … | |
… | |
| 777 | my ($pkg, @funs) = @$_; |
881 | my ($pkg, @funs) = @$_; |
| 778 | *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"}) |
882 | *{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"}) |
| 779 | for @funs; |
883 | for @funs; |
| 780 | } |
884 | } |
| 781 | |
885 | |
|
|
886 | =over 4 |
|
|
887 | |
|
|
888 | =item @retval = safe_eval $code, [var => value, ...] |
|
|
889 | |
|
|
890 | Compiled and executes the given perl code snippet. additional var/value |
|
|
891 | pairs result in temporary local (my) scalar variables of the given name |
|
|
892 | that are available in the code snippet. Example: |
|
|
893 | |
|
|
894 | my $five = safe_eval '$first + $second', first => 1, second => 4; |
|
|
895 | |
|
|
896 | =cut |
|
|
897 | |
| 782 | sub safe_eval($;@) { |
898 | sub safe_eval($;@) { |
| 783 | my ($code, %vars) = @_; |
899 | my ($code, %vars) = @_; |
| 784 | |
900 | |
| 785 | my $qcode = $code; |
901 | my $qcode = $code; |
| 786 | $qcode =~ s/"/‟/g; # not allowed in #line filenames |
902 | $qcode =~ s/"/‟/g; # not allowed in #line filenames |
| … | |
… | |
| 808 | } |
924 | } |
| 809 | |
925 | |
| 810 | wantarray ? @res : $res[0] |
926 | wantarray ? @res : $res[0] |
| 811 | } |
927 | } |
| 812 | |
928 | |
|
|
929 | =item cf::register_script_function $function => $cb |
|
|
930 | |
|
|
931 | Register a function that can be called from within map/npc scripts. The |
|
|
932 | function should be reasonably secure and should be put into a package name |
|
|
933 | like the extension. |
|
|
934 | |
|
|
935 | Example: register a function that gets called whenever a map script calls |
|
|
936 | C<rent::overview>, as used by the C<rent> extension. |
|
|
937 | |
|
|
938 | cf::register_script_function "rent::overview" => sub { |
|
|
939 | ... |
|
|
940 | }; |
|
|
941 | |
|
|
942 | =cut |
|
|
943 | |
| 813 | sub register_script_function { |
944 | sub register_script_function { |
| 814 | my ($fun, $cb) = @_; |
945 | my ($fun, $cb) = @_; |
| 815 | |
946 | |
| 816 | no strict 'refs'; |
947 | no strict 'refs'; |
| 817 | *{"safe::$fun"} = $safe_hole->wrap ($cb); |
948 | *{"safe::$fun"} = $safe_hole->wrap ($cb); |
| 818 | } |
949 | } |
|
|
950 | |
|
|
951 | =back |
|
|
952 | |
|
|
953 | =cut |
| 819 | |
954 | |
| 820 | ############################################################################# |
955 | ############################################################################# |
| 821 | |
956 | |
| 822 | =head2 EXTENSION DATABASE SUPPORT |
957 | =head2 EXTENSION DATABASE SUPPORT |
| 823 | |
958 | |
| … | |
… | |
| 858 | |
993 | |
| 859 | Immediately write the database to disk I<if it is dirty>. |
994 | Immediately write the database to disk I<if it is dirty>. |
| 860 | |
995 | |
| 861 | =cut |
996 | =cut |
| 862 | |
997 | |
|
|
998 | our $DB; |
|
|
999 | |
| 863 | { |
1000 | { |
| 864 | my $db; |
|
|
| 865 | my $path = cf::localdir . "/database.pst"; |
1001 | my $path = cf::localdir . "/database.pst"; |
| 866 | |
1002 | |
| 867 | sub db_load() { |
1003 | sub db_load() { |
| 868 | warn "loading database $path\n";#d# remove later |
1004 | warn "loading database $path\n";#d# remove later |
| 869 | $db = stat $path ? Storable::retrieve $path : { }; |
1005 | $DB = stat $path ? Storable::retrieve $path : { }; |
| 870 | } |
1006 | } |
| 871 | |
1007 | |
| 872 | my $pid; |
1008 | my $pid; |
| 873 | |
1009 | |
| 874 | sub db_save() { |
1010 | sub db_save() { |
| 875 | warn "saving database $path\n";#d# remove later |
1011 | warn "saving database $path\n";#d# remove later |
| 876 | waitpid $pid, 0 if $pid; |
1012 | waitpid $pid, 0 if $pid; |
| 877 | if (0 == ($pid = fork)) { |
1013 | if (0 == ($pid = fork)) { |
| 878 | $db->{_meta}{version} = 1; |
1014 | $DB->{_meta}{version} = 1; |
| 879 | Storable::nstore $db, "$path~"; |
1015 | Storable::nstore $DB, "$path~"; |
| 880 | rename "$path~", $path; |
1016 | rename "$path~", $path; |
| 881 | cf::_exit 0 if defined $pid; |
1017 | cf::_exit 0 if defined $pid; |
| 882 | } |
1018 | } |
| 883 | } |
1019 | } |
| 884 | |
1020 | |
| … | |
… | |
| 898 | $idle->start; |
1034 | $idle->start; |
| 899 | } |
1035 | } |
| 900 | |
1036 | |
| 901 | sub db_get($;$) { |
1037 | sub db_get($;$) { |
| 902 | @_ >= 2 |
1038 | @_ >= 2 |
| 903 | ? $db->{$_[0]}{$_[1]} |
1039 | ? $DB->{$_[0]}{$_[1]} |
| 904 | : ($db->{$_[0]} ||= { }) |
1040 | : ($DB->{$_[0]} ||= { }) |
| 905 | } |
1041 | } |
| 906 | |
1042 | |
| 907 | sub db_put($$;$) { |
1043 | sub db_put($$;$) { |
| 908 | if (@_ >= 3) { |
1044 | if (@_ >= 3) { |
| 909 | $db->{$_[0]}{$_[1]} = $_[2]; |
1045 | $DB->{$_[0]}{$_[1]} = $_[2]; |
| 910 | } else { |
1046 | } else { |
| 911 | $db->{$_[0]} = $_[1]; |
1047 | $DB->{$_[0]} = $_[1]; |
| 912 | } |
1048 | } |
| 913 | db_dirty; |
1049 | db_dirty; |
| 914 | } |
1050 | } |
| 915 | |
1051 | |
| 916 | attach_global |
1052 | attach_global |
| … | |
… | |
| 922 | } |
1058 | } |
| 923 | |
1059 | |
| 924 | ############################################################################# |
1060 | ############################################################################# |
| 925 | # the server's main() |
1061 | # the server's main() |
| 926 | |
1062 | |
|
|
1063 | sub cfg_load { |
|
|
1064 | open my $fh, "<:utf8", cf::confdir . "/config" |
|
|
1065 | or return; |
|
|
1066 | |
|
|
1067 | local $/; |
|
|
1068 | *CFG = YAML::Syck::Load <$fh>; |
|
|
1069 | } |
|
|
1070 | |
| 927 | sub main { |
1071 | sub main { |
|
|
1072 | cfg_load; |
| 928 | db_load; |
1073 | db_load; |
| 929 | load_extensions; |
1074 | load_extensions; |
| 930 | Event::loop; |
1075 | Event::loop; |
| 931 | } |
1076 | } |
| 932 | |
1077 | |
| … | |
… | |
| 984 | |
1129 | |
| 985 | # reload cf.pm |
1130 | # reload cf.pm |
| 986 | $msg->("reloading cf.pm"); |
1131 | $msg->("reloading cf.pm"); |
| 987 | require cf; |
1132 | require cf; |
| 988 | |
1133 | |
| 989 | # load database again |
1134 | # load config and database again |
|
|
1135 | cf::cfg_load; |
| 990 | cf::db_load; |
1136 | cf::db_load; |
| 991 | |
1137 | |
| 992 | # load extensions |
1138 | # load extensions |
| 993 | $msg->("load extensions"); |
1139 | $msg->("load extensions"); |
| 994 | cf::load_extensions; |
1140 | cf::load_extensions; |
| … | |
… | |
| 1023 | register "<global>", __PACKAGE__; |
1169 | register "<global>", __PACKAGE__; |
| 1024 | |
1170 | |
| 1025 | unshift @INC, $LIBDIR; |
1171 | unshift @INC, $LIBDIR; |
| 1026 | |
1172 | |
| 1027 | $TICK_WATCHER = Event->timer ( |
1173 | $TICK_WATCHER = Event->timer ( |
| 1028 | prio => 1, |
1174 | prio => 1, |
|
|
1175 | async => 1, |
| 1029 | at => $NEXT_TICK || 1, |
1176 | at => $NEXT_TICK || 1, |
| 1030 | cb => sub { |
1177 | cb => sub { |
| 1031 | cf::server_tick; # one server iteration |
1178 | cf::server_tick; # one server iteration |
| 1032 | |
1179 | |
| 1033 | my $NOW = Event::time; |
1180 | my $NOW = Event::time; |
| 1034 | $NEXT_TICK += $TICK; |
1181 | $NEXT_TICK += $TICK; |
| 1035 | |
1182 | |
| 1036 | # if we are delayed by four ticks, skip them all |
1183 | # if we are delayed by four ticks or more, skip them all |
| 1037 | $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4; |
1184 | $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4; |
| 1038 | |
1185 | |
| 1039 | $TICK_WATCHER->at ($NEXT_TICK); |
1186 | $TICK_WATCHER->at ($NEXT_TICK); |
| 1040 | $TICK_WATCHER->start; |
1187 | $TICK_WATCHER->start; |
| 1041 | }, |
1188 | }, |
| 1042 | ); |
1189 | ); |
| 1043 | |
1190 | |
|
|
1191 | IO::AIO::max_poll_time $TICK * 0.2; |
|
|
1192 | |
|
|
1193 | Event->io (fd => IO::AIO::poll_fileno, |
|
|
1194 | poll => 'r', |
|
|
1195 | prio => 5, |
|
|
1196 | cb => \&IO::AIO::poll_cb); |
|
|
1197 | |
| 1044 | 1 |
1198 | 1 |
| 1045 | |
1199 | |
