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Contents
module Middleman
class DnsResolver
# Use network name server to resolve ips and names
class HostsResolver
private
attr_reader :resolver
public
def initialize(opts={})
# using the splat operator works around a non-existing HOSTSRC variable
# using nil as input does not work, but `*[]` does and then Resolv::Hosts
# uses its defaults
@resolver = opts.fetch(:resolver, Resolv::Hosts.new(*hosts_file))
end
# Get names for ip
#
# @param [#to_s] ip
# The ip to resolve into names
#
# @return [Array]
# Array of Names
def getnames(ip)
resolver.getnames(ip.to_s).map(&:to_s)
rescue Resolv::ResolvError
[]
end
# Get ips for name
#
# @param [#to_s] name
# The name to resolve into ips
#
# @return [Array]
# Array of ipaddresses
def getaddresses(name)
resolver.getaddresses(name.to_s).map(&:to_s)
rescue Resolv::ResolvError
[]
end
private
# Path to hosts file
#
# This looks for MM_HOSTSRC in your environment
#
# @return [Array]
# This needs to be an array, to make the splat operator work
#
# @example
# # <ip> <hostname>
# 127.0.0.1 localhost.localhost localhost
def hosts_file
return [ENV['MM_HOSTSRC']] if ENV.key?('MM_HOSTSRC') && File.file?(ENV['MM_HOSTSRC'])
[]
end
end
end
end
Version data entries
43 entries across 43 versions & 3 rubygems