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#
# Author:: Tim Dysinger (<tim@dysinger.net>)
# Author:: Benjamin Black (<bb@chef.io>)
# Author:: Christopher Brown (<cb@chef.io>)
# Copyright:: Copyright (c) 2009-2016 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 'ohai/mixin/ec2_metadata'
require 'base64'
Ohai.plugin(:EC2) do
include Ohai::Mixin::Ec2Metadata
provides "ec2"
depends "network/interfaces"
depends "dmi"
# look for arp address that non-VPC hosts will have
def has_ec2_mac?
network[:interfaces].values.each do |iface|
unless iface[:arp].nil?
if iface[:arp].value?("fe:ff:ff:ff:ff:ff")
Ohai::Log.debug("has_ec2_mac? == true")
return true
end
end
end
Ohai::Log.debug("has_ec2_mac? == false")
false
end
# look for amazon string in dmi bios data
# this only works on hvm instances as paravirt instances have no dmi data
def has_ec2_dmi?
begin
# detect a version of '4.2.amazon'
if dmi[:bios][:all_records][0][:Version] =~ /amazon/
Ohai::Log.debug("has_ec2_dmi? == true")
true
end
rescue NoMethodError
Ohai::Log.debug("has_ec2_dmi? == false")
false
end
end
def looks_like_ec2?
# Try non-blocking connect so we don't "block" if
# the Xen environment is *not* EC2
hint?('ec2') || ( has_ec2_dmi? || has_ec2_mac?) && can_metadata_connect?(Ohai::Mixin::Ec2Metadata::EC2_METADATA_ADDR,80)
end
collect_data do
if looks_like_ec2?
Ohai::Log.debug("looks_like_ec2? == true")
ec2 Mash.new
fetch_metadata.each do |k, v|
# fetch_metadata returns IAM security credentials, including the IAM user's
# secret access key. We'd rather not have ohai send this information
# to the server.
# http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AESDG-chapter-instancedata.html#instancedata-data-categories
next if k == 'iam' && !hint?('iam')
ec2[k] = v
end
ec2[:userdata] = self.fetch_userdata
#ASCII-8BIT is equivalent to BINARY in this case
if ec2[:userdata] && ec2[:userdata].encoding.to_s == "ASCII-8BIT"
Ohai::Log.debug("Binary UserData Found. Storing in base64")
ec2[:userdata] = Base64.encode64(ec2[:userdata])
end
else
Ohai::Log.debug("looks_like_ec2? == false")
false
end
end
end
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