58 lines
1.5 KiB
Swift
58 lines
1.5 KiB
Swift
// SPDX-License-Identifier: MIT
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// Copyright © 2018 WireGuard LLC. All Rights Reserved.
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import Foundation
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import Network
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@available(OSX 10.14, iOS 12.0, *)
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struct DNSServer {
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let address: IPAddress
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}
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// MARK: Converting to and from String
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// For use in the UI
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extension DNSServer {
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init?(from addressString: String) {
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if let addr = IPv4Address(addressString) {
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address = addr
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} else if let addr = IPv6Address(addressString) {
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address = addr
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} else {
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return nil
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}
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}
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func stringRepresentation() -> String {
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return "\(address)"
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}
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}
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// MARK: Codable
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// For serializing to disk
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@available(OSX 10.14, iOS 12.0, *)
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extension DNSServer: Codable {
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public func encode(to encoder: Encoder) throws {
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var container = encoder.singleValueContainer()
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try container.encode(address.rawValue)
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}
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public init(from decoder: Decoder) throws {
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let container = try decoder.singleValueContainer()
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var data = try container.decode(Data.self)
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let ipAddressFromData: IPAddress? = {
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switch (data.count) {
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case 4: return IPv4Address(data)
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case 16: return IPv6Address(data)
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default: return nil
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}
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}()
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guard let ipAddress = ipAddressFromData else {
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throw DecodingError.invalidData
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}
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address = ipAddress
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}
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enum DecodingError: Error {
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case invalidData
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}
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}
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