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class DnsPlugin < Plugin
begin
require 'resolv-replace'
def gethostname(address)
Resolv.getname(address)
end
def getaddresses(name)
Resolv.getaddresses(name)
end
rescue LoadError
def gethostname(address)
Socket.gethostbyname(address).first
end
def getaddresses(name)
a = Socket.gethostbyname(name)
list = Socket.getaddrinfo(a[0], 'http')
addresses = Array.new
list.each {|line|
addresses << line[3]
}
addresses
end
end
def help(plugin, topic="")
"nslookup|dns <hostname|ip> => show local resolution results for hostname or ip address"
end
def privmsg(m)
unless(m.params)
m.reply "incorrect usage: " + help(m.plugin)
return
end
Thread.new do
if(m.params =~ /^\d+\.\d+\.\d+\.\d+$/)
begin
a = gethostname(m.params)
m.reply m.params + ": " + a if a
rescue StandardError => err
m.reply "#{m.params}: not found"
end
elsif(m.params =~ /^(\w|\.)+$/)
begin
a = getaddresses(m.params)
m.reply m.params + ": " + a.join(", ")
rescue StandardError => err
m.reply "#{m.params}: not found"
end
else
m.reply "incorrect usage: " + help(m.plugin)
end
end
end
end
plugin = DnsPlugin.new
plugin.register("nslookup")
plugin.register("dns")
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