class Dnsruby::Hosts
Dnsruby::Hosts
class¶ ↑
Dnsruby::Hosts
is a hostname resolver that uses the system hosts file
class methods¶ ↑
-
Dnsruby::Hosts.new
(hosts='/etc/hosts')
methods¶ ↑
-
Dnsruby::Hosts#each_address(name)
{|address| …}address lookup methods.
-
Dnsruby::Hosts#each_name(address)
{|name| …}hostnames lookup methods.
Constants
- DefaultFileName
Public Class Methods
new(filename = DefaultFileName)
click to toggle source
Creates a new Dnsruby::Hosts
using filename
for its data source
# File lib/dnsruby/hosts.rb, line 43 def initialize(filename = DefaultFileName) @filename = filename @mutex = Mutex.new @initialized = nil end
Public Instance Methods
each_address(name, &proc)
click to toggle source
Iterates over all IP addresses for name
retrieved from the hosts file
# File lib/dnsruby/hosts.rb, line 102 def each_address(name, &proc) lazy_initialize if @name2addr.include?(name) @name2addr[name].each(&proc) end end
each_name(address, &proc)
click to toggle source
Iterates over all hostnames for address
retrieved from the hosts file
# File lib/dnsruby/hosts.rb, line 123 def each_name(address, &proc) lazy_initialize if @addr2name.include?(address) @addr2name[address].each(&proc) end end
getaddress(name)
click to toggle source
Gets the first IP address for name
from the hosts file
# File lib/dnsruby/hosts.rb, line 89 def getaddress(name) each_address(name) {|address| return address} raise ResolvError.new("#{@filename} has no name: #{name}") end
getaddresses(name)
click to toggle source
Gets all IP addresses for name
from the hosts file
# File lib/dnsruby/hosts.rb, line 95 def getaddresses(name) ret = [] each_address(name) {|address| ret << address} return ret end
getname(address)
click to toggle source
Gets the first hostname of address
from the hosts file
# File lib/dnsruby/hosts.rb, line 110 def getname(address) each_name(address) {|name| return name} raise ResolvError.new("#{@filename} has no address: #{address}") end
getnames(address)
click to toggle source
Gets all hostnames for address
from the hosts file
# File lib/dnsruby/hosts.rb, line 116 def getnames(address) ret = [] each_name(address) {|name| ret << name} return ret end