1 files changed, 56 insertions, 0 deletions
diff --git a/data/rbot/plugins/nslookup.rb b/data/rbot/plugins/nslookup.rb
new file mode 100644
index 00000000..92da1ba7
--- /dev/null
+++ b/data/rbot/plugins/nslookup.rb
@@ -0,0 +1,56 @@
+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+$/)
+       begin
+         a = gethostname(m.params)
+         m.reply m.params + ": " + a if a
+       rescue StandardError => err
+         m.reply "#{m.params}: not found"
+       end
+      elsif(m.params =~ /^\S+$/)
+       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")