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//
// AnyIPAddress.swift
// MullvadTypes
//
// Created by pronebird on 05/10/2021.
// Copyright © 2021 Mullvad VPN AB. All rights reserved.
//
import Foundation
import Network
/// Container type that holds either `IPv4Address` or `IPv6Address`.
public enum AnyIPAddress: IPAddress, Codable, Equatable, CustomDebugStringConvertible {
case ipv4(IPv4Address)
case ipv6(IPv6Address)
private enum CodingKeys: String, CodingKey {
case ipv4, ipv6
}
private var innerAddress: IPAddress {
switch self {
case let .ipv4(ipv4Address):
return ipv4Address
case let .ipv6(ipv6Address):
return ipv6Address
}
}
public var rawValue: Data {
innerAddress.rawValue
}
public init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
if container.contains(.ipv4) {
self = .ipv4(try container.decode(IPv4Address.self, forKey: .ipv4))
} else if container.contains(.ipv6) {
self = .ipv6(try container.decode(IPv6Address.self, forKey: .ipv6))
} else {
throw DecodingError.dataCorruptedError(
forKey: .ipv4,
in: container,
debugDescription: "Invalid AnyIPAddress representation"
)
}
}
public func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
switch self {
case let .ipv4(ipv4Address):
try container.encode(ipv4Address, forKey: .ipv4)
case let .ipv6(ipv6Address):
try container.encode(ipv6Address, forKey: .ipv6)
}
}
public init?(_ rawValue: Data, _ interface: NWInterface?) {
if let ipv4Address = IPv4Address(rawValue, interface) {
self = .ipv4(ipv4Address)
} else if let ipv6Address = IPv6Address(rawValue, interface) {
self = .ipv6(ipv6Address)
} else {
return nil
}
}
public init?(_ string: String) {
// Arbitrary integers should not be allowed by us and need to be handled separately
// since Apple allows them.
guard Int(string) == nil else { return nil }
if let ipv4Address = IPv4Address(string) {
self = .ipv4(ipv4Address)
} else if let ipv6Address = IPv6Address(string) {
self = .ipv6(ipv6Address)
} else {
return nil
}
}
public var interface: NWInterface? {
innerAddress.interface
}
public var isLoopback: Bool {
innerAddress.isLoopback
}
public var isLinkLocal: Bool {
innerAddress.isLinkLocal
}
public var isMulticast: Bool {
innerAddress.isMulticast
}
public var debugDescription: String {
switch self {
case let .ipv4(ipv4Address):
return "\(ipv4Address)"
case let .ipv6(ipv6Address):
return "\(ipv6Address)"
}
}
}
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