Land rapid7#4998, non-loopback LHOST tab completion

Author: wvu

lib/msf/ui/console/command_dispatcher/core.rb

@@ -806,7 +806,7 @@ def cmd_rename_job(*args)
     end
 
     # This is not respecting the Protected access control, but this seems to be the only way
-    # to rename a job. If you know a more appropriate way, patches accepted. 
+    # to rename a job. If you know a more appropriate way, patches accepted.
     framework.jobs[job_id].send(:name=, job_name)
     print_status("Job #{job_id} updated")
 
@@ -2973,11 +2973,18 @@ def option_values_dispatch(o, str, words)
           res << addr
         end
       when 'LHOST'
-        rh = self.active_module.datastore["RHOST"]
+        rh = self.active_module.datastore['RHOST'] || framework.datastore['RHOST']
         if rh and not rh.empty?
           res << Rex::Socket.source_address(rh)
         else
-          res << Rex::Socket.source_address()
+          res << Rex::Socket.source_address
+          # getifaddrs was introduced in 2.1.2
+          if Socket.respond_to?(:getifaddrs)
+            ifaddrs = Socket.getifaddrs.find_all { |ifaddr|
+              ((ifaddr.flags & Socket::IFF_LOOPBACK) == 0) && ifaddr.addr.ip?
+            }
+            res += ifaddrs.map { |ifaddr| ifaddr.addr.ip_address }
+          end
         end
       else
       end