#
# Author:: Bryan McLellan <btm@opscode.com>
# Copyright:: Copyright (c) 2012 Opscode, 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.
#

provides "keys/ssh"
require_plugin "keys"

keys[:ssh] = Mash.new

def is_dsa_or_rsa?(file)
  case IO.read(file).split[0]
  when "ssh-dss"
    "dsa"
  when "ssh-rsa"
    "rsa"
  else
    nil
  end
end

sshd_config = if File.exists?("/etc/ssh/sshd_config")
                "/etc/ssh/sshd_config"
              elsif File.exists?("/etc/sshd_config")
                # Darwin
                "/etc/sshd_config"
              else
                Ohai::Log.debug("Failed to find sshd configuration file")
                nil
              end

if sshd_config
  File.open(sshd_config) do |conf|
    conf.each_line do |line|
      if line.match(/^hostkey\s/i)
        pub_file = "#{line.split[1]}.pub"
        key_type = is_dsa_or_rsa?(pub_file)
        keys[:ssh]["host_#{key_type}_public"] = IO.read(pub_file).split[1] unless key_type.nil?
      end
    end
  end
else
  if keys[:ssh][:host_dsa_public].nil? && File.exists?("/etc/ssh/ssh_host_dsa_key.pub")
    keys[:ssh][:host_dsa_public] = IO.read("/etc/ssh/ssh_host_dsa_key.pub").split[1]
  end

  if keys[:ssh][:host_rsa_public].nil? && File.exists?("/etc/ssh/ssh_host_rsa_key.pub")
    keys[:ssh][:host_rsa_public] = IO.read("/etc/ssh/ssh_host_rsa_key.pub").split[1]
  end
end