# Copyright (c) 2011 NLnet Labs
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datatypes xsd = "http://www.w3.org/2001/XMLSchema-datatypes"

start = element Adapter { dns }
	
dns = element DNS {
	# TSIG secrets
	tsig*,

	# inbound zone transfer settings
	element Inbound {
		element RequestTransfer { remote+ }?,
		element AllowNotify { peer+ }?
	}?,

	# outbound zone transfer settings
	element Outbound {
		element ProvideTransfer { peer+ }?,
		element Notify { remote+ }?
	}?
}

# TSIG secret
tsig = element TSIG {
	element Name { xsd:string },
	# http://www.iana.org/assignments/tsig-algorithm-names
	element Algorithm { xsd:string },
	# base64 encoded secret
	element Secret { xsd:base64Binary }
}

remote = element Remote { address, port?, key? }
peer   = element Peer { prefix?, key? }

address = element Address { xsd:string } # e.g., 192.0.2.1 or 2001:DB8::1
prefix  = element Prefix { xsd:string }  # e.g., 192.0.2.0/24 or 2001:DB8::/32
port    = element Port { xsd:positiveInteger { maxInclusive = "65535" } }
key     = element Key { xsd:string }
