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# Copyright © 2010 Julian Blake Kongslie <jblake@omgwallhack.org>
# Licensed under the BSD 3-clause license.
use strict;
use warnings;
package Piny::Auth;
use Moose;
use MooseX::StrictConstructor;
use Digest::HMAC_SHA1;
# Attributes
has 'key' =>
( is => 'ro'
, isa => 'String'
, lazy_build => 1
);
# Public methods
sub hash {
my ( $s, $params ) = @_;
my $hmac = Digest::HMAC_SHA1->new( $s->key );
if ( ref $params ) {
foreach my $key ( sort keys %$params ) {
$hmac->add( length( $key ) . "\0" . $key . "\0" . length( $params->{$key} ) . "\0" . $params->{$key} . "\0" );
};
} else {
$hmac->add( $params );
};
return $hmac->b64digest;
};
# Builder methods
# If constructed with just one argument, then treat it as the key.
around BUILDARGS => sub {
my ( $orig, $class ) = ( shift, shift );
if ( @_ == 1 && ! ref $_[0] ) {
return $class->$orig( key => $_[0] );
} else {
return $class->$orig( @_ );
};
};
sub _build_key {
my ( $s ) = @_;
open( my $fh, "<", "/etc/libpiny.key" ) or die "Can't open libpiny.key: $!";
my $key;
{
local $/;
$key = <$fh>;
};
close( $fh );
return $key;
};
# Moose boilerplate
__PACKAGE__->meta->make_immutable;
1;
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