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# Copyright (c) 2007 Jon Connell. |
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# All Rights Reserved. |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the same terms as Perl itself. |
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package Finance::Bank::Cahoot::CredentialsProvider::CryptFile; |
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use base qw(Finance::Bank::Cahoot::CredentialsProvider); |
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use strict; |
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use warnings 'all'; |
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use vars qw($VERSION); |
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$VERSION = '1.07'; |
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use Carp qw(croak); |
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use Crypt::CBC; |
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use English '-no_match_vars'; |
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use File::Slurp qw(slurp); |
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use IO::File; |
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sub _init |
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{ |
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my ($self, $options) = @_; |
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croak 'No key provided' if not defined $options->{key}; |
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my $cipher = Crypt::CBC->new(-key => $options->{key}, |
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-cipher => 'DES_PP'); |
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my $keyfile = $options->{keyfile}; |
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$keyfile = $ENV{HOME}.'/.cahoot' if not defined $keyfile; |
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if (-e $keyfile) { |
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my $fh = new IO::File $keyfile, 'r' |
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or croak "Can't open $keyfile for reading: $OS_ERROR"; |
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my $data = slurp $fh; |
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my $plaintext = $cipher->decrypt($data); |
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for (split /\n/, $plaintext) { |
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my ($k, $v) = split /\t/; |
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$self->{$k} = $v; |
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} |
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$fh->close; |
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} |
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100
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if (defined $options->{fallback}) { |
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my $fallback_class = 'Finance::Bank::Cahoot::CredentialsProvider::'.$options->{fallback}; |
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eval "use $fallback_class"; ## no critic |
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100
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croak 'Invalid fallback provider '.$options->{fallback} if $EVAL_ERROR; |
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my $fallback_args = { credentials => $self->{_credentials}, |
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options => $options->{fallback_options} }; |
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eval "\$self->{_fallback} = $fallback_class->new(\%{\$fallback_args})"; ## no critic |
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croak 'Fallback provider '.$options->{fallback}.' failed to initialise' if $EVAL_ERROR; |
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} |
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my $do_update = 0; |
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foreach my $credential (@{$self->{_credentials}}) { |
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if (not defined $self->{$credential}) { |
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croak 'No fallback provider given and '.$credential.' is not in keyfile' |
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if not defined $self->{_fallback}; |
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$self->{$credential} = $self->{_fallback}->$credential; |
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$do_update = 1; |
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} |
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} |
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if ($do_update) { |
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my $fh = new IO::File $keyfile, 'w' |
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or croak "Can't open $keyfile for writing: $OS_ERROR"; |
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my @ciphers; |
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foreach my $credential (@{$self->{_credentials}}) { |
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push @ciphers, $credential."\t".$self->{$credential}; |
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} |
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my $ciphertext = $cipher->encrypt(join "\n", @ciphers); |
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$fh->print($ciphertext); |
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$fh->close; |
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} |
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return $self; |
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} |
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sub get |
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{ |
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my ($self, $credential, $offset) = @_; |
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return substr $self->{$credential}, $offset, 1 |
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if defined $offset; |
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return $self->{$credential}; |
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} |
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1; |
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__END__ |