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// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import Foundation
@available(OSX 10.14, iOS 12.0, *)
final class TunnelConfiguration {
var interface: InterfaceConfiguration
let peers: [PeerConfiguration]
init(interface: InterfaceConfiguration, peers: [PeerConfiguration]) {
self.interface = interface
self.peers = peers
let peerPublicKeysArray = peers.map { $0.publicKey }
let peerPublicKeysSet = Set<Data>(peerPublicKeysArray)
if (peerPublicKeysArray.count != peerPublicKeysSet.count) {
fatalError("Two or more peers cannot have the same public key")
}
}
}
@available(OSX 10.14, iOS 12.0, *)
struct InterfaceConfiguration: Codable {
var name: String
var privateKey: Data
var addresses: [IPAddressRange] = []
var listenPort: UInt16?
var mtu: UInt16?
var dns: [DNSServer] = []
init(name: String, privateKey: Data) {
self.name = name
self.privateKey = privateKey
if (name.isEmpty) { fatalError("Empty name") }
if (privateKey.count != 32) { fatalError("Invalid private key") }
}
}
@available(OSX 10.14, iOS 12.0, *)
struct PeerConfiguration: Codable {
var publicKey: Data
var preSharedKey: Data? {
didSet(value) {
if let value = value {
if (value.count != 32) { fatalError("Invalid preshared key") }
}
}
}
var allowedIPs: [IPAddressRange] = []
var endpoint: Endpoint?
var persistentKeepAlive: UInt16?
init(publicKey: Data) {
self.publicKey = publicKey
if (publicKey.count != 32) { fatalError("Invalid public key") }
}
}
extension TunnelConfiguration: Encodable { }
extension TunnelConfiguration: Decodable {
enum CodingKeys: CodingKey {
case interface
case peers
}
convenience init(from decoder: Decoder) throws {
let values = try decoder.container(keyedBy: CodingKeys.self)
let interface = try values.decode(InterfaceConfiguration.self, forKey: .interface)
let peers = try values.decode([PeerConfiguration].self, forKey: .peers)
self.init(interface: interface, peers: peers)
}
}
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