/usr/lib/ruby/vendor_ruby/ohai/plugins/ssh_host_key.rb is in ohai 8.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# 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.
#
Ohai.plugin(:SSHHostKey) do
provides "keys/ssh"
depends "keys"
def extract_keytype?(content)
case content[0]
when "ssh-dss"
[ "dsa", nil ]
when "ssh-rsa"
[ "rsa", nil ]
when /^ecdsa/
[ "ecdsa", content[0] ]
when 'ssh-ed25519'
[ 'ed25519', nil ]
else
[ nil, nil ]
end
end
collect_data do
keys[:ssh] = Mash.new
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"
content = IO.read(pub_file).split
key_type, key_subtype = extract_keytype?(content)
keys[:ssh]["host_#{key_type}_public"] = content[1] unless key_type.nil?
keys[:ssh]["host_#{key_type}_type"] = key_subtype unless key_subtype.nil?
end
end
end
end
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
if keys[:ssh][:host_ecdsa_public].nil? && File.exists?("/etc/ssh/ssh_host_ecdsa_key.pub")
content = IO.read("/etc/ssh/ssh_host_ecdsa_key.pub")
keys[:ssh][:host_ecdsa_public] = content.split[1]
keys[:ssh][:host_ecdsa_type] = content.split[0]
end
if keys[:ssh][:host_ed25519_public].nil? && File.exists?("/etc/ssh/ssh_host_ed25519_key.pub")
keys[:ssh][:host_ed25519_public] = IO.read("/etc/ssh/ssh_host_ed25519_key.pub").split[1]
end
end
end
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