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//
// IPEndpoint.swift
// MullvadVPN
//
// Created by pronebird on 06/12/2019.
// Copyright © 2019 Mullvad VPN AB. All rights reserved.
//
import Foundation
import struct Network.IPv4Address
import struct Network.IPv6Address
import protocol Network.IPAddress
struct IPv4Endpoint: Hashable, Equatable, Codable, CustomStringConvertible {
let ip: IPv4Address
let port: UInt16
init(ip: IPv4Address, port: UInt16) {
self.ip = ip
self.port = port
}
init?<S>(string: S) where S: StringProtocol {
let components = string.split(separator: ":", maxSplits: 2, omittingEmptySubsequences: false)
if components.count == 2, let parsedIP = IPv4Address(String(components[0])), let parsedPort = UInt16(components[1]) {
ip = parsedIP
port = parsedPort
} else {
return nil
}
}
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
let string = try container.decode(String.self)
if let parsedAddress = IPv4Endpoint(string: string) {
self = parsedAddress
} else {
throw DecodingError.dataCorruptedError(in: container, debugDescription: "Cannot parse the IPv4 endpoint")
}
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode("\(self)")
}
var description: String {
return "\(ip):\(port)"
}
static func == (lhs: IPv4Endpoint, rhs: IPv4Endpoint) -> Bool {
return lhs.ip.rawValue == rhs.ip.rawValue && lhs.port == rhs.port
}
}
struct IPv6Endpoint: Hashable, Equatable, Codable, CustomStringConvertible {
let ip: IPv6Address
let port: UInt16
init(ip: IPv6Address, port: UInt16) {
self.ip = ip
self.port = port
}
init?<S>(string: S) where S: StringProtocol {
guard let lastColon = string.lastIndex(of: ":"), lastColon != string.endIndex else {
return nil
}
let portIndex = string.index(after: lastColon)
let addressString = string[..<lastColon]
let portString = string[portIndex...]
guard addressString.first == "[" && addressString.last == "]" else {
return nil
}
let ipv6AddressString = String(addressString.dropFirst().dropLast())
if let parsedIP = IPv6Address(ipv6AddressString), let parsedPort = UInt16(portString) {
ip = parsedIP
port = parsedPort
} else {
return nil
}
}
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
let string = try container.decode(String.self)
if let parsedAddress = IPv6Endpoint(string: string) {
self = parsedAddress
} else {
throw DecodingError.dataCorruptedError(in: container, debugDescription: "Cannot parse the IPv6 endpoint")
}
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode("\(self)")
}
var description: String {
return "[\(ip)]:\(port)"
}
static func == (lhs: IPv6Endpoint, rhs: IPv6Endpoint) -> Bool {
return lhs.ip.rawValue == rhs.ip.rawValue && lhs.port == rhs.port
}
}
enum AnyIPEndpoint: Hashable, Equatable, Codable, CustomStringConvertible {
case ipv4(IPv4Endpoint)
case ipv6(IPv6Endpoint)
var ip: IPAddress {
switch self {
case .ipv4(let ipv4Endpoint):
return ipv4Endpoint.ip
case .ipv6(let ipv6Endpoint):
return ipv6Endpoint.ip
}
}
var port: UInt16 {
switch self {
case .ipv4(let ipv4Endpoint):
return ipv4Endpoint.port
case .ipv6(let ipv6Endpoint):
return ipv6Endpoint.port
}
}
init?<S>(string: S) where S: StringProtocol {
if let ipv4Endpoint = IPv4Endpoint(string: string) {
self = .ipv4(ipv4Endpoint)
} else if let ipv6Endpoint = IPv6Endpoint(string: string) {
self = .ipv6(ipv6Endpoint)
} else {
return nil
}
}
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
let string = try container.decode(String.self)
if let ipv4Endpoint = IPv4Endpoint(string: string) {
self = .ipv4(ipv4Endpoint)
} else if let ipv6Endpoint = IPv6Endpoint(string: string) {
self = .ipv6(ipv6Endpoint)
} else {
throw DecodingError.dataCorruptedError(in: container, debugDescription: "Cannot parse the endpoint")
}
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode("\(self)")
}
var description: String {
switch self {
case .ipv4(let ipv4Endpoint):
return "\(ipv4Endpoint)"
case .ipv6(let ipv6Endpoint):
return "\(ipv6Endpoint)"
}
}
static func == (lhs: AnyIPEndpoint, rhs: AnyIPEndpoint) -> Bool {
switch (lhs, rhs) {
case (.ipv4(let lhsEndpoint), .ipv4(let rhsEndpoint)):
return lhsEndpoint == rhsEndpoint
case (.ipv6(let lhsEndpoint), .ipv6(let rhsEndpoint)):
return lhsEndpoint == rhsEndpoint
default:
return false
}
}
}
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