Require address verification after one successful verification

server_list/models.py

@@ -102,6 +102,8 @@ class Server(db.Model):
 	rollback_enabled = db.Column(db.Boolean, nullable=False)
 	can_see_far_names = db.Column(db.Boolean, nullable=False)
 
+	address_verification_required = db.Column(db.Boolean, nullable=False, default=False)
+
 	@staticmethod
 	def find_from_json(obj):
 		try:
@@ -194,6 +196,9 @@ class Server(db.Model):
 
 		self.last_update = now
 
+		if obj["address_verified"]:
+			self.address_verification_required = True
+
 	def as_json(self):
 		obj = {
 			"address": self.address,

server_list/views.py

@@ -92,13 +92,15 @@ def announce():
 	if addr_info is None:
 		return f"Failed to resolve server address {obj['address']!r}.", 400
 
+	valid = False
 	if "world_uuid" not in obj:
 		valid = verify_announce(addr_info, obj["address"], obj["ip"])
 
-		if not valid:
+		if not valid and server and server.address_verification_required:
 			return render_template("address_verification_failed.txt",
 				announce_ip=announce_ip,
 				valid_addresses=[data[4][0] for data in addr_info]), 400
+	obj["address_verified"] = valid
 
 	obj["addr_info"] = addr_info