Provide bind9 file format export of domain zones.

src/storage/zone.cr

@@ -56,7 +56,12 @@ class DNSManager::Storage::Zone
 		end
 
 		def to_s(io : IO)
-			io << "(#{ "%4d" % @rrid }) #{ "%30s" % @name} #{ "%6d" % @ttl} IN #{ "%10s" % @rrtype } #{ "%30s" % @target}\n"
+			io << "(#{ "%4d" % @rrid }) "
+			io << "#{ "%30s" % @name} #{ "%6d" % @ttl} IN #{ "%10s" % @rrtype } #{ "%30s" % @target}\n"
+		end
+
+		def to_bind9(io : IO)
+			io << "#{@name} #{@ttl} IN #{@rrtype} #{@target}\n"
 		end
 	end
 
@@ -81,7 +86,8 @@ class DNSManager::Storage::Zone
 		end
 
 		def to_s(io : IO)
-			io << "(#{ "%4d" % @rrid }) #{name} #{ttl} IN SOA (#{mname} #{rname}\n"
+			io << "(#{ "%4d" % @rrid }) "
+			io << "#{name} #{ttl} IN SOA (#{mname} #{rname}\n"
 			io << "\t\t#{ "%10d" % serial  }  ; serial\n"
 			io << "\t\t#{ "%10d" % refresh }  ; refresh\n"
 			io << "\t\t#{ "%10d" % retry   }  ; retry\n"
@@ -90,6 +96,16 @@ class DNSManager::Storage::Zone
 			io << "\t)\n"
 		end
 
+		def to_bind9(io : IO)
+			io << "#{name} #{ttl} IN SOA (#{mname} #{rname}\n"
+			io << "\t\t#{serial }  ; serial\n"
+			io << "\t\t#{refresh}  ; refresh\n"
+			io << "\t\t#{retry  }  ; retry\n"
+			io << "\t\t#{expire }  ; expire\n"
+			io << "\t\t#{minttl }  ; minttl\n"
+			io << "\t)\n"
+		end
+
 		def get_errors : Array(Error)
 			errors = [] of Error
 
@@ -237,7 +253,12 @@ class DNSManager::Storage::Zone
 		end
 
 		def to_s(io : IO)
-			io << "(#{ "%4d" % @rrid }) #{ "%30s" % @name} #{ "%6d" % @ttl} IN MX #{ "%3d" % @priority} #{ "%30s" % @target}\n"
+			io << "(#{ "%4d" % @rrid }) "
+			io << "#{ "%30s" % @name} #{ "%6d" % @ttl} IN MX #{ "%3d" % @priority} #{ "%30s" % @target}\n"
+		end
+
+		def to_bind9(io : IO)
+			io << "#{@name} #{@ttl} IN MX #{@priority} #{@target}\n"
 		end
 
 		def get_errors : Array(Error)
@@ -287,6 +308,20 @@ class DNSManager::Storage::Zone
 
 			errors
 		end
+
+		def to_s(io : IO)
+			io << "(#{ "%4d" % @rrid }) "
+			io << "#{ "%30s" % @name} "
+			io << "#{ "%6d" % @ttl} IN SRV "
+			io << "#{ "%3d" % @priority} "
+			io << "#{ "%3d" % @weight} "
+			io << "#{ "%5d" % @port} "
+			io << "#{ "%30s" % @target}\n"
+		end
+
+		def to_bind9(io : IO)
+			io << "#{@name} #{@ttl} IN SRV #{@priority} #{@weight} #{@port} #{@target}\n"
+		end
 	end
 
 	def <<(rr : ResourceRecord)
@@ -302,6 +337,13 @@ class DNSManager::Storage::Zone
 		end
 	end
 
+	def to_bind9(io : IO)
+		io << "DOMAIN: #{@domain}\n"
+		@resources.each do |rr|
+			rr.to_bind9 io
+		end
+	end
+
 	def get_errors? : Array(Error)?
 		errors = [] of Error
 		unless Zone.is_domain_valid? @domain