/usr/lib/ruby/vendor_ruby/ohai/mixin/ec2_metadata.rb is in ohai 6.14.0-2.
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:: Tim Dysinger (<tim@dysinger.net>)
# Author:: Benjamin Black (<bb@opscode.com>)
# Author:: Christopher Brown (<cb@opscode.com>)
# Copyright:: Copyright (c) 2009 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.
require 'net/http'
require 'socket'
module Ohai
module Mixin
module Ec2Metadata
EC2_METADATA_ADDR = "169.254.169.254" unless defined?(EC2_METADATA_ADDR)
EC2_METADATA_URL = "/2008-02-01/meta-data" unless defined?(EC2_METADATA_URL)
EC2_USERDATA_URL = "/2008-02-01/user-data" unless defined?(EC2_USERDATA_URL)
EC2_ARRAY_VALUES = %w(security-groups)
def can_metadata_connect?(addr, port, timeout=2)
t = Socket.new(Socket::Constants::AF_INET, Socket::Constants::SOCK_STREAM, 0)
saddr = Socket.pack_sockaddr_in(port, addr)
connected = false
begin
t.connect_nonblock(saddr)
rescue Errno::EINPROGRESS
r,w,e = IO::select(nil,[t],nil,timeout)
if !w.nil?
connected = true
else
begin
t.connect_nonblock(saddr)
rescue Errno::EISCONN
t.close
connected = true
rescue SystemCallError
end
end
rescue SystemCallError
end
Ohai::Log.debug("can_metadata_connect? == #{connected}")
connected
end
def http_client
Net::HTTP.start(EC2_METADATA_ADDR).tap {|h| h.read_timeout = 600}
end
def fetch_metadata(id='')
metadata = Hash.new
http_client.get("#{EC2_METADATA_URL}/#{id}").body.split("\n").each do |o|
key = "#{id}#{o.gsub(/\=.*$/, '/')}"
if key[-1..-1] != '/'
metadata[key.gsub(/\-|\//, '_').to_sym] =
if EC2_ARRAY_VALUES.include? key
http_client.get("#{EC2_METADATA_URL}/#{key}").body.split("\n")
else
http_client.get("#{EC2_METADATA_URL}/#{key}").body
end
else
fetch_metadata(key).each{|k,v| metadata[k] = v}
end
end
metadata
end
def fetch_userdata()
response = http_client.get("#{EC2_USERDATA_URL}/")
response.code == "200" ? response.body : nil
end
end
end
end
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