lwrp.rb

#
# cookbooks/ssh_authorized_key/resources/default.rb
#

def initialize(name, collection=nil, node=nil)
  super(name, collection, node)
  @action = :create 
end

actions :create, :delete

attribute :key_type, :equal_to => [ :rsa, "rsa", :dsa, "dsa" ], :default => :rsa
attribute :key, :kind_of => String, :required => true
attribute :user, :kind_of => String, :required => true
attribute :target, :kind_of => String, :default => nil

# cookbooks/ssh_authorized_key/provider/default.rb

def find_authorized_keys_file
  new_resource.target ? new_resource.target : "/tmp/#{new_resource.user}.ssh_authorized_keys"
end

action :create do
  execute "create_authorized_key-#{new_resource.name]}" do
    command "/bin/echo '#{new_resource.key_type]} #{new_resource.key}' >> '#{find_authorized_keys_file}'"
    not_if "/bin/grep '#{params[:key]}' '#{find_authorized_keys_file}'"
  end
end

action :delete do
  execute "delete_authorized_key-#{new_resource.name}" do
    command "/bin/sed -i '/#{new_resource.key}/d' '#{find_authorized_keys_file}'"
  end
end