i think there are no legal terms for your own website except maybe the cookie law and
if you do not want to do illegal stuff, in france you can only promote casinos wich have a licence in france,
Accueil – ARJEL – Autorité de Régulation des Jeux En Ligne – site officiel
Programmes d’affiliation des Casinos – French Affiliates
Review of first gaming conference focusing on the French market
and i think you can best search yourself on the interwebs,lol