Validate input for IP address

[anselal]

We should validate the input on all forms to avoid db injections. HTML has the option to define a pattern attribute for input tags like:

<input required="" type="text" name="ip" pattern="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$">

[anselal]

Also we should add a title attribute to customise the tooltip message on error:

<input required="" type="text" name="ip" pattern="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$" title="Please add a valid IP address">