Airlines do not provide accommodation, because the connecting flight time difference is not the airline's fault, but the airport does have a paid rest area, just like domestic hourly rooms, but it needs to be booked very early, and the number of rooms is quite limited.
Charles de Gaulle Airport has several ABCDEFG areas, each with cafes, restaurants and duty-free shops. As for 17 hours, don't worry too much. Take the shuttle bus in the airport and visit all the shops in these areas. All the shops there can speak Chinese and use RMB.
Moreover, Charles de Gaulle Airport is the largest transfer station in Europe, and 60% of the transfer stations are from China. Some are inspected, and some are royalists ... You can take small chess and grab a porcelain to kill a few sets.
If there is no flight after 12, the rest of the terminal will have to stay up late to transfer. There will be many empty seats at this time. It is suggested that you take off the blankets and pillows on the plane. The airline will recycle them before landing in Paris, but you can tell the flight attendants that you have to transfer, and they will allow you to take them off the plane if you still need them at the airport ... Find a remote corner at night when no one is there. .....