Module: Resolvers::Utils::Networking

Defined in:
lib/facter/resolvers/utils/networking.rb

Class Method Summary collapse

Class Method Details

.build_binding(addr, mask_length) ⇒ Hash

Creates a hash with IP, netmask and network. Works for IPV4 and IPV6

Parameters:

  • addr (String) —

    The IP address

  • mask_length (Integer) —

    Number of 1 bits the netmask has

Returns:

  • (Hash) —

    Hash containing ip address, netmask and network



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# File 'lib/facter/resolvers/utils/networking.rb', line 14

def build_binding(addr, mask_length)
  ip = IPAddr.new(addr)
  mask_helper = ip.ipv6? ? 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff' : '255.255.255.255'
  mask = IPAddr.new(mask_helper).mask(mask_length)

  { address: addr, netmask: mask.to_s, network: ip.mask(mask_length).to_s }
end

.expand_main_bindings(networking_facts) ⇒ Object 



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# File 'lib/facter/resolvers/utils/networking.rb', line 22

def expand_main_bindings(networking_facts)
  primary = networking_facts[:primary_interface]
  interfaces = networking_facts[:interfaces]

  expand_interfaces(interfaces) unless interfaces.nil?
  expand_primary_interface(networking_facts, primary) unless primary.nil? || interfaces.nil?
end

.find_valid_binding(bindings) ⇒ Object 



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# File 'lib/facter/resolvers/utils/networking.rb', line 48

def find_valid_binding(bindings)
  bindings.each do |binding|
    return binding unless ignored_ip_address(binding[:address])
  end
  bindings.empty? ? nil : bindings.first
end

.get_scope(ip) ⇒ Object 



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# File 'lib/facter/resolvers/utils/networking.rb', line 30

def get_scope(ip)
  require 'socket'

  scope6 = []
  addrinfo = Addrinfo.new(['AF_INET6', 0, nil, ip], :INET6)

  scope6 << 'compat,' if IPAddr.new(ip).ipv4_compat?
  scope6 << if addrinfo.ipv6_linklocal?
              'link'
            elsif addrinfo.ipv6_sitelocal?
              'site'
            elsif addrinfo.ipv6_loopback?
              'host'
            else 'global'
            end
  scope6.join
end

.ignored_ip_address(addr) ⇒ Object 



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# File 'lib/facter/resolvers/utils/networking.rb', line 55

def ignored_ip_address(addr)
  addr.empty? || addr.start_with?('127.', '169.254.') || addr.start_with?('fe80') || addr.eql?('::1')
end