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module Puppet::Parser::Functions
newfunction(:validate_x509_rsa_key_pair, :doc => <<-ENDHEREDOC
Validates a PEM-formatted X.509 certificate and RSA private key using
OpenSSL. Verifies that the certficate's signature was created from the
supplied key.
Fail compilation if any value fails this check.
validate_x509_rsa_key_pair($cert, $key)
ENDHEREDOC
) do |args|
require 'openssl'
NUM_ARGS = 2 unless defined? NUM_ARGS
unless args.length == NUM_ARGS then
raise Puppet::ParseError,
("validate_x509_rsa_key_pair(): wrong number of arguments (#{args.length}; must be #{NUM_ARGS})")
end
args.each do |arg|
unless arg.is_a?(String)
raise Puppet::ParseError, "#{arg.inspect} is not a string."
end
end
begin
cert = OpenSSL::X509::Certificate.new(args[0])
rescue OpenSSL::X509::CertificateError => e
raise Puppet::ParseError, "Not a valid x509 certificate: #{e}"
end
begin
key = OpenSSL::PKey::RSA.new(args[1])
rescue OpenSSL::PKey::RSAError => e
raise Puppet::ParseError, "Not a valid RSA key: #{e}"
end
unless cert.verify(key)
raise Puppet::ParseError, "Certificate signature does not match supplied key"
end
end
end
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