Add Validator for Endpoints.

This commit is contained in:
Jeroen Leenarts 2018-08-15 20:35:21 +02:00
parent d6fcc10bd9
commit fc1d20e70f
3 changed files with 137 additions and 0 deletions

71
Shared/Validators.swift Normal file
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@ -0,0 +1,71 @@
//
// IPValidator.swift
// WireGuard
//
// Created by Jeroen Leenarts on 15-08-18.
// Copyright © 2018 WireGuard. All rights reserved.
//
import Foundation
enum AddressType {
case IPv6, IPv4, other
}
public enum EndpointValidationError: Error {
case noIpAndPort(String)
case invalidIP(String)
case invalidPort(String)
var localizedDescription: String {
switch self {
case .noIpAndPort:
return NSLocalizedString("EndpointValidationError.noIpAndPort", comment: "Error message for malformed endpoint.")
case .invalidIP:
return NSLocalizedString("EndpointValidationError.invalidIP", comment: "Error message for invalid endpoint ip.")
case .invalidPort:
return NSLocalizedString("EndpointValidationError.invalidPort", comment: "Error message invalid endpoint port.")
}
}
}
struct Endpoint {
var ipAddress: String
var port: Int32
var addressType: AddressType
init?(endpointString: String) throws {
let parts = endpointString.split(separator: ":")
guard parts.count == 2 else {
throw EndpointValidationError.noIpAndPort(endpointString)
}
guard let port = Int32(parts[1]), port > 0 else {
throw EndpointValidationError.invalidPort(String(parts[1]))
}
ipAddress = String(parts[0])
let addressType = validateIpAddress(ipToValidate: ipAddress)
guard addressType == .IPv4 || addressType == .IPv6 else {
throw EndpointValidationError.invalidIP(ipAddress)
}
self.addressType = addressType
self.port = port
}
}
func validateIpAddress(ipToValidate: String) -> AddressType {
var sin = sockaddr_in()
if ipToValidate.withCString({ cstring in inet_pton(AF_INET, cstring, &sin.sin_addr) }) == 1 {
// IPv4 peer.
return .IPv4
}
var sin6 = sockaddr_in6()
if ipToValidate.withCString({ cstring in inet_pton(AF_INET6, cstring, &sin6.sin6_addr) }) == 1 {
// IPv6 peer.
return .IPv6
}
return .other
}

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@ -8,6 +8,9 @@
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@ -259,6 +265,7 @@
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@ -528,6 +535,7 @@
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@ -0,0 +1,56 @@
//
// ValidatorsTests.swift
// WireGuardTests
//
// Created by Jeroen Leenarts on 15-08-18.
// Copyright © 2018 WireGuard. All rights reserved.
//
import XCTest
@testable import WireGuard
class ValidatorsTests: XCTestCase {
func testIPv6Endpoint() throws {
XCTFail("Still needs implementation")
}
func testIPv4Endpoint() throws {
_ = try Endpoint(endpointString: "192.168.0.1:12345")
}
func testIPv4Endpoint_invalidIP() throws {
XCTAssertThrowsError(try Endpoint(endpointString: "12345:12345")) { (error) in
guard case EndpointValidationError.invalidIP(let value) = error else {
return XCTFail("Unexpected error")
}
XCTAssertEqual(value, "12345")
}
}
func testIPv4Endpoint_invalidPort() throws {
XCTAssertThrowsError(try Endpoint(endpointString: "192.168.0.1:-12345")) { (error) in
guard case EndpointValidationError.invalidPort(let value) = error else {
return XCTFail("Unexpected error")
}
XCTAssertEqual(value, "-12345")
}
}
func testIPv4Endpoint_noIpAndPort() throws {
func executeTest(endpointString: String) {
XCTAssertThrowsError(try Endpoint(endpointString: endpointString)) { (error) in
guard case EndpointValidationError.noIpAndPort(let value) = error else {
return XCTFail("Unexpected error")
}
XCTAssertEqual(value, endpointString, file: #file, line: #line)
}
}
executeTest(endpointString: ":")
executeTest(endpointString: "192.168.0.1")
executeTest(endpointString: "192.168.0.1:")
executeTest(endpointString: ":12345")
executeTest(endpointString: "12345")
}
}