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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: Codable {
var interface: InterfaceConfiguration
let peers: [PeerConfiguration]
static let keyLength: Int = 32
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 != TunnelConfiguration.keyLength {
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 != TunnelConfiguration.keyLength {
fatalError("Invalid preshared key")
}
}
}
}
var allowedIPs = [IPAddressRange]()
var endpoint: Endpoint?
var persistentKeepAlive: UInt16?
init(publicKey: Data) {
self.publicKey = publicKey
if publicKey.count != TunnelConfiguration.keyLength {
fatalError("Invalid public key")
}
}
}
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