At the hearing of the special proceedings, the court has power and jurisdiction to examine and determine the legality and validity of, and to approve and confirm, each and all of the proceedings for the organization of the fire protection district and for the formation of any local improvement district therein under the law relating to such districts from and including the petition for the organization of the fire district and for the formation of any local improvement district therein and all other proceedings which affect the legality of the districts, or the validity and legality of any coupon or registered warrants or bonds either of the fire district or for a local improvement district therein and all proceedings conducted by the fire district for a contract of the district involving the fire district or a local improvement district therein, and any other proceeding which may affect the legality of the proceedings concerned.