wireguard-apple/WireGuard/Models/Tunnel+Extension.swift

102 lines
2.8 KiB
Swift

//
// Tunnel+Extension.swift
// WireGuard
//
// Created by Jeroen Leenarts on 04-08-18.
// Copyright © 2018 Jason A. Donenfeld <Jason@zx2c4.com>. All rights reserved.
//
import Foundation
extension Tunnel {
public func generateProviderConfiguration() -> [String: Any] {
var providerConfiguration = [String: Any]()
providerConfiguration["title"] = self.title
var settingsString = "replace_peers=true\n"
if let interface = interface {
settingsString += generateInterfaceProviderConfiguration(interface)
}
if let peers = peers?.array as? [Peer] {
peers.forEach {
settingsString += generatePeerProviderConfiguration($0)
}
}
providerConfiguration["settings"] = settingsString
return providerConfiguration
}
private func generateInterfaceProviderConfiguration(_ interface: Interface) -> String {
var settingsString = "replace_peers=true\n"
if let hexPrivateKey = base64KeyToHex(interface.privateKey) {
settingsString += "private_key=\(hexPrivateKey)\n"
}
if interface.listenPort > 0 {
settingsString += "listen_port=\(interface.listenPort)\n"
}
if let dns = interface.dns {
settingsString += "dns=\(dns)\n"
}
if interface.mtu > 0 {
settingsString += "mtu=\(interface.mtu)\n"
}
return settingsString
}
private func generatePeerProviderConfiguration(_ peer: Peer) -> String {
var settingsString = ""
if let hexPublicKey = base64KeyToHex(peer.publicKey) {
settingsString += "public_key=\(hexPublicKey)"
}
if let presharedKey = peer.presharedKey {
settingsString += "preshared_key=\(presharedKey)"
}
if let endpoint = peer.endpoint {
settingsString += "endpoint=\(endpoint)"
}
if peer.persistentKeepalive > 0 {
settingsString += "persistent_keepalive_interval=\(peer.persistentKeepalive)"
}
if let allowedIPs = peer.allowedIPs?.split(separator: ",") {
allowedIPs.forEach {
settingsString += "allowed_ip=\($0.trimmingCharacters(in: .whitespaces))"
}
}
return settingsString
}
}
private func base64KeyToHex(_ base64: String?) -> String? {
guard let base64 = base64 else {
return nil
}
guard base64.count == 44 else {
return nil
}
guard base64.last == "=" else {
return nil
}
guard let keyData = Data(base64Encoded: base64) else {
return nil
}
guard keyData.count == 32 else {
return nil
}
let hexKey = keyData.reduce("") {$0 + String(format: "%02x", $1)}
return hexKey
}