/usr/share/perl5/TM/ResourceAble/BDB.pm is in libtm-perl 1.56-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | package TM::ResourceAble::BDB::main;
use strict;
use warnings;
use Tie::Hash;
use base qw(Tie::StdHash);
sub FETCH {
my ($self, $key) = @_;
#warn "FETCH main $key";
if ($key eq 'assertions' || $key eq 'mid2iid') {
return $self->{$key}; # where the BDB is tied to
} elsif ($key eq 'index') { # not part of this game
return $self->{'index'};
} elsif ($key eq 'variants') { # not part of this game
return $self->{'variants'};
} elsif ($key eq '__main') { # dont like being asked about that
return $self->{'__main'};
} else {
return $self->{'__main'}->{$key}; # get it from the secret store
}
}
sub STORE {
my ($self, $key, $val) = @_;
#warn "STORE main $key $val";
if ($key eq 'assertions' || $key eq 'mid2iid') {
$self->{$key} = $val; # those go directly into the hash
} elsif ($key eq 'index') { # not part of this game
$self->{'index'} = $val;
} elsif ($key eq 'variants') { # not part of this game
$self->{'variants'} = $val; # memory-only, will not be persisted, THIS IS A BUG
} elsif ($key eq '__main') { # this is *directly* store (the value being a tied hash)
$self->{'__main'} = $val;
} else {
$self->{'__main'}->{$key} = $val; # those will be redirected into the tied store
}
}
1;
package TM::ResourceAble::BDB;
use strict;
use warnings;
use Data::Dumper;
use TM;
use base qw(TM);
use Class::Trait ('TM::ResourceAble');
sub new {
my $class = shift;
my %options = @_;
my $file = delete $options{file} or die "file?";
$options{url} = "file:$file";
my %self;
tie %self, 'TM::ResourceAble::BDB::main', "$file.main";
use BerkeleyDB;
my %flags = (-Flags => DB_CREATE ) unless -e "$file.main" && -s "$file.main";
# warn Dumper \%flags;
my $dbm = tie %{ $self{'__main'} }, 'BerkeleyDB::Hash',
-Filename => "$file.main", %flags;
# $dbm->filter_store_value ( sub {
# warn "really storing $_ into __main";
# $_;
# } ) ;
# $dbm->filter_fetch_value ( sub {
# warn "really getting $_ from __main";
# $_;
# } ) ;
my $dba = tie %{ $self{assertions} }, 'BerkeleyDB::Hash',
-Filename => "$file.assertions", %flags;
$dba->filter_store_value ( sub {
use Storable qw(freeze);
$_ = freeze ($_);
} ) ;
$dba->filter_fetch_value ( sub {
use Storable qw(thaw);
$_ = thaw ($_);
} ) ;
my $dbt = tie %{ $self{mid2iid} }, 'BerkeleyDB::Hash',
-Filename => "$file.toplets", %flags;
$dbt->filter_store_value ( sub {
use Storable qw(freeze);
$_ = freeze ($_);
} ) ;
$dbt->filter_fetch_value ( sub {
use Storable qw(thaw);
$_ = thaw ($_);
} ) ;
unless (defined $self{last_mod}) { # empty? => careful cloning from prototypical TM
#warn "initializing BDB";
my $tmp = bless $class->SUPER::new (%options), $class;
foreach my $k (keys %$tmp) {
if ($k eq 'mid2iid') {
my $mid2iid = $self{mid2iid}; # fetch once
$mid2iid->{$_} = $tmp->{mid2iid}->{$_} for keys %{ $tmp->{mid2iid} };
$self{mid2iid} = $mid2iid;
} elsif ($k eq 'assertions') {
my $asserts = $self{assertions};
$asserts->{$_} = $tmp->{assertions}->{$_} for keys %{ $tmp->{assertions} };
$self{assertions} = $asserts;
} else {
$self{$k} = $tmp->{$k};
}
}
}
return bless \%self, $class;
}
1;
__END__
sub xDESTROY {
my $self = shift;
warn "DESTROY BDB";
untie %{ $self->{mid2iid} };
untie %{ $self->{assertions} };
untie %{ $self->{'__main'} };
}
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