72 lines
2.0 KiB
Swift
72 lines
2.0 KiB
Swift
//
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// IPValidator.swift
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// WireGuard
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//
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// Created by Jeroen Leenarts on 15-08-18.
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// Copyright © 2018 WireGuard. All rights reserved.
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//
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import Foundation
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enum AddressType {
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case IPv6, IPv4, other
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}
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public enum EndpointValidationError: Error {
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case noIpAndPort(String)
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case invalidIP(String)
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case invalidPort(String)
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var localizedDescription: String {
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switch self {
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case .noIpAndPort:
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return NSLocalizedString("EndpointValidationError.noIpAndPort", comment: "Error message for malformed endpoint.")
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case .invalidIP:
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return NSLocalizedString("EndpointValidationError.invalidIP", comment: "Error message for invalid endpoint ip.")
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case .invalidPort:
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return NSLocalizedString("EndpointValidationError.invalidPort", comment: "Error message invalid endpoint port.")
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}
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}
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}
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struct Endpoint {
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var ipAddress: String
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var port: Int32
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var addressType: AddressType
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init?(endpointString: String) throws {
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let parts = endpointString.split(separator: ":")
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guard parts.count == 2 else {
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throw EndpointValidationError.noIpAndPort(endpointString)
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}
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guard let port = Int32(parts[1]), port > 0 else {
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throw EndpointValidationError.invalidPort(String(parts[1]))
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}
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ipAddress = String(parts[0])
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let addressType = validateIpAddress(ipToValidate: ipAddress)
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guard addressType == .IPv4 || addressType == .IPv6 else {
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throw EndpointValidationError.invalidIP(ipAddress)
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}
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self.addressType = addressType
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self.port = port
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}
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}
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func validateIpAddress(ipToValidate: String) -> AddressType {
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var sin = sockaddr_in()
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if ipToValidate.withCString({ cstring in inet_pton(AF_INET, cstring, &sin.sin_addr) }) == 1 {
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// IPv4 peer.
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return .IPv4
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}
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var sin6 = sockaddr_in6()
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if ipToValidate.withCString({ cstring in inet_pton(AF_INET6, cstring, &sin6.sin6_addr) }) == 1 {
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// IPv6 peer.
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return .IPv6
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}
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return .other
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}
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