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#
# Copyright:: Copyright 2008-2016, Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "chef/resource"
class Chef
class Resource
# @author Charles Johnson <charles@chef.io>
# generates rsa private key files. If a valid rsa key file can be opened at the specified location,
# no new file will be created. If the RSA key file cannot be opened, either because it does not exist
# or because the password to the RSA key file does not match the password in the recipe, it will be overwritten.
class OpensslRsaPrivateKey < Chef::Resource
require "openssl"
resource_name :openssl_rsa_private_key
property :path, String, name_property: true
property :key_length, equal_to: [1024, 2048, 4096, 8192], default: 2048
property :key_pass, String
property :key_cipher, String, default: "des3", equal_to: valid_ciphers
property :owner, String, default: "root"
property :group, String, default: node["root_group"]
property :mode, [Integer, String], default: "0640"
property :force, [true, false], default: false
action :create do
return if new_resource.force || priv_key_file_valid?(new_resource.path, new_resource.key_pass)
converge_by("create #{new_resource.key_length} bit RSA key #{new_resource.path}") do
if new_resource.key_pass
unencrypted_rsa_key = gen_rsa_priv_key(new_resource.key_length)
rsa_key_content = encrypt_rsa_key(unencrypted_rsa_key, new_resource.key_pass, new_resource.cipher)
else
rsa_key_content = gen_rsa_priv_key(new_resource.key_length).to_pem
end
declare_resource(:file, new_resource.path) do
action :create
owner new_resource.owner
group new_resource.group
mode new_resource.mode
sensitive true
content rsa_key_content
end
end
end
action_class do
def gen_rsa_key(key_length)
raise ArgumentError, "Key length must be a power of 2 greater than or equal to 1024" unless key_length_valid?(key_length)
OpenSSL::PKey::RSA.new(key_length)
end
# Key manipulation helpers
# Returns a pem string
def encrypt_rsa_key(rsa_key, key_password)
raise TypeError, "rsa_key must be a Ruby OpenSSL::PKey::RSA object" unless rsa_key.is_a?(OpenSSL::PKey::RSA)
raise TypeError, "RSA key password must be a string" unless key_password.is_a?(String)
cipher = OpenSSL::Cipher::Cipher.new("des3")
rsa_key.to_pem(cipher, key_password)
end
end
end
end
end
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