[242] | 1 | package Epoll::DB::Poll::Bdata; |
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[219] | 2 | |
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| 3 | # $Id$ |
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| 4 | |
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| 5 | use strict; |
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| 6 | use warnings; |
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[242] | 7 | use base 'Epoll::DB::common'; |
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| 8 | use Epoll::DB::Poll; |
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[319] | 9 | use YAML (); |
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[219] | 10 | use Crypt::CBC; |
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[240] | 11 | use Crypt::DES_EDE3; # Called from CBC |
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[219] | 12 | |
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| 13 | =head1 NAME |
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| 14 | |
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[242] | 15 | Epoll::Model::Vote - Catalyst Model |
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[219] | 16 | |
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| 17 | =head1 DESCRIPTION |
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| 18 | |
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| 19 | Catalyst Model. |
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| 20 | |
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| 21 | =cut |
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| 22 | |
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| 23 | sub new { |
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| 24 | my ($class, $dbstring, $poll) = @_; |
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| 25 | |
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| 26 | bless { |
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| 27 | poll => $poll, |
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| 28 | dbstring => $dbstring, |
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[242] | 29 | db => Epoll::DB::common::_newdb($dbstring), |
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[319] | 30 | data => {}, |
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[219] | 31 | }, $class; |
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| 32 | } |
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| 33 | |
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| 34 | sub voteid { $_[0]->poll->voteid } |
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| 35 | |
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| 36 | sub poll { |
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| 37 | my ($self) = @_; |
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| 38 | $self->{poll}; |
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| 39 | } |
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| 40 | |
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| 41 | sub uid { |
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| 42 | my ($self) = @_; |
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[242] | 43 | $self->{data}{id} ||= Epoll::DB::common::gen_uid(); |
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[219] | 44 | } |
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| 45 | |
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| 46 | sub xmlout { |
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| 47 | my ($self) = @_; |
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[319] | 48 | $self->uid; |
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| 49 | YAML::Dump($self->{data}); |
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[219] | 50 | } |
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| 51 | |
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| 52 | sub xmlin { |
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| 53 | my ($self, $data) = @_; |
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[319] | 54 | $self->{data} = YAML::Load($data); |
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[219] | 55 | } |
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| 56 | |
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| 57 | sub _store_clear { |
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| 58 | my ($self) = @_; |
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| 59 | my $addb = $self->db->prepare_cached( |
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| 60 | q{ |
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| 61 | insert into ballot (id, poll, invalid) values (?,?,?) |
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| 62 | } |
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| 63 | ); |
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| 64 | |
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| 65 | my $needvalid = 'f'; |
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| 66 | my %items = (); |
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[319] | 67 | foreach(keys %{$self->{data}{content} || {}}) { |
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[219] | 68 | if ($self->poll->find_choice_key($_)) { |
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| 69 | $items{$_} = 't'; |
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| 70 | } else { |
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| 71 | $items{$_} = 'f'; |
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| 72 | $needvalid = undef; |
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| 73 | } |
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| 74 | } |
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| 75 | |
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| 76 | $addb->execute($self->uid, $self->voteid, $needvalid) or do { |
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| 77 | $self->rollback; |
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| 78 | return; |
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| 79 | }; |
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| 80 | |
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| 81 | my $addbc = $self->db->prepare_cached( |
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| 82 | q{ |
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[319] | 83 | insert into ballot_item (id, value, fromlist, weight) values (?,?,?,?) |
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[219] | 84 | } |
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| 85 | ); |
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[319] | 86 | foreach (keys %{$self->{data}{content} || {}}) { |
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[219] | 87 | $_ or next; |
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[319] | 88 | $addbc->execute($self->uid, $_, $items{$_}, $self->{data}{content}{$_}) or do { |
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[219] | 89 | $self->rollback; |
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| 90 | return; |
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| 91 | }; |
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| 92 | } |
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| 93 | |
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| 94 | 1; |
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| 95 | } |
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| 96 | |
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| 97 | sub _store_crypted { |
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| 98 | my ($self) = @_; |
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[319] | 99 | |
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[219] | 100 | my $addenc = $self->db->prepare_cached( |
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| 101 | q{insert into ballot_enc (id, data, enckey, poll) values (?,?,?,?)} |
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| 102 | ); |
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[242] | 103 | my $uid = Epoll::DB::common::gen_uid(); |
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[319] | 104 | |
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| 105 | if (my $pollkey = $self->poll->public_key) { |
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| 106 | my $symkey = map{ chr(rand(256)) } (1 .. 24); |
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| 107 | my $cipher = new Crypt::CBC($symkey, 'DES_EDE3'); |
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| 108 | my $encryptedballot = $cipher->encrypt_hex( |
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| 109 | $self->xmlout() |
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| 110 | ); |
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| 111 | my $encsymkey = $self->poll->rsa->encrypt ( |
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| 112 | Message => $symkey, |
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| 113 | Key => $self->poll->public_key, |
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| 114 | Armour => 1, |
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| 115 | ) || die $self->poll->rsa->errstr(); |
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| 116 | $addenc->execute($uid, $encryptedballot, $encsymkey, $self->voteid); |
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| 117 | } else { |
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| 118 | $addenc->execute($uid, $self->xmlout(), undef, $self->voteid); |
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| 119 | } |
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[219] | 120 | } |
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| 121 | |
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| 122 | sub _load_crypted { |
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| 123 | my ($self, $ballotid, $privkey) = @_; |
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| 124 | my $sth = $self->db->prepare_cached( |
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| 125 | q{select * from ballot_enc where id = ? for update} |
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| 126 | ); |
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| 127 | $sth->execute($ballotid); |
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| 128 | my $ballot = $sth->fetchrow_hashref; |
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| 129 | $sth->finish; |
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[325] | 130 | if ($ballot->{enckey}) { |
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| 131 | $self->_load_crypted_data($ballot->{data}, $ballot->{enckey}, $privkey); |
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| 132 | } else { |
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| 133 | return $ballot->{data} |
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| 134 | } |
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[219] | 135 | } |
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| 136 | |
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[319] | 137 | sub _load_crypted_data { |
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| 138 | my ($self, $data, $encsymkey, $privkey) = @_; |
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| 139 | if ($encsymkey) { |
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| 140 | my $symkey = $self->poll->rsa->decrypt ( |
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| 141 | Cyphertext => $encsymkey, |
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| 142 | Key => $privkey, |
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| 143 | Armour => 1, |
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| 144 | ) || die $self->poll->rsa->errstr(); |
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| 145 | my $cipher = new Crypt::CBC($symkey, 'DES_EDE3'); |
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| 146 | return $self->xmlin($cipher->decrypt_hex($data)); |
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| 147 | } else { |
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| 148 | return $self->xmlin($data); |
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| 149 | } |
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| 150 | } |
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| 151 | |
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| 152 | sub decrypt_data { |
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| 153 | my ($self, $ballotid, $data, $encsymkey, $privkey) = @_; |
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| 154 | if ($self->_load_crypted_data($data, $encsymkey, $privkey) && |
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| 155 | $self->_store_clear && |
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| 156 | $self->_set_decrypted($ballotid)) { |
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| 157 | $self->commit; |
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| 158 | return; |
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| 159 | } else { |
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| 160 | $self->rollback; |
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| 161 | return 1; |
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| 162 | } |
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| 163 | } |
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| 164 | |
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| 165 | sub _set_decrypted { |
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| 166 | my ($self, $ballotid) = @_; |
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| 167 | my $upd = $self->db->prepare_cached(q{update ballot_enc set decrypted = true where id = ?}); |
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| 168 | $upd->execute($ballotid) |
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| 169 | } |
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| 170 | |
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[219] | 171 | sub decrypt { |
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| 172 | my ($self, $ballotid, $privkey) = @_; |
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| 173 | $self->_load_crypted($ballotid, $privkey); |
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| 174 | $self->_store_clear or return; |
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[319] | 175 | if ($self->_set_decrypted($ballotid)) { |
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[219] | 176 | $self->commit; |
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| 177 | return; |
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| 178 | } else { |
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| 179 | $self->rollback; |
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| 180 | return 1; |
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| 181 | } |
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| 182 | } |
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| 183 | |
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| 184 | |
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| 185 | =head1 AUTHOR |
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| 186 | |
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| 187 | Thauvin Olivier |
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| 188 | |
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| 189 | =head1 LICENSE |
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| 190 | |
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| 191 | This library is free software, you can redistribute it and/or modify |
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| 192 | it under the same terms as Perl itself or CeCILL. |
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| 193 | |
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| 194 | =cut |
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| 195 | |
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| 196 | 1; |
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