Okay, I think you have hydrostatic.
First, pull one hose off the cyn. and turn the wheel in the other direction to bottom out the cyn. Does oil stop flowing or does it continue. If it continues after the cyn. is bottomed out you have a bad cyn. This is the cheapest thing to happen.
If oil stops flowing, you will need to rebuild or get a new steering box under the steering wheel.
Tim