smarter match for IP address in nodes

- add 'connnected?' method to ssh/telnet to query if or not we're
  connected
- subclass OxidizedError from StandardError, all future OxidizedErrors
  should be subclasssed from this.

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/oxidized/input/ssh.rb b/lib/oxidized/input/ssh.rb
index a858213..bd0a459 100644
--- a/lib/oxidized/input/ssh.rb
+++ b/lib/oxidized/input/ssh.rb
@@ -27,6 +27,10 @@ module Oxidized
         shell_open @ssh
         @username ? shell_login : expect(@node.prompt)
       end
+      connected?
+    end
+
+    def connected?
       @ssh and not @ssh.closed?
     end