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// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
class WgQuickConfigFileWriter {
static func writeConfigFile(from configuration: TunnelConfiguration) -> Data? {
let interface = configuration.interface
var output = "[Interface]\n"
output.append("PrivateKey = \(interface.privateKey.base64EncodedString())\n")
if let listenPort = interface.listenPort {
output.append("ListenPort = \(listenPort)\n")
}
if !interface.addresses.isEmpty {
let addressString = interface.addresses.map { $0.stringRepresentation() }.joined(separator: ", ")
output.append("Address = \(addressString)\n")
}
if !interface.dns.isEmpty {
let dnsString = interface.dns.map { $0.stringRepresentation() }.joined(separator: ", ")
output.append("DNS = \(dnsString)\n")
}
if let mtu = interface.mtu {
output.append("MTU = \(mtu)\n")
}
for peer in configuration.peers {
output.append("\n[Peer]\n")
output.append("PublicKey = \(peer.publicKey.base64EncodedString())\n")
if let preSharedKey = peer.preSharedKey {
output.append("PresharedKey = \(preSharedKey.base64EncodedString())\n")
}
if !peer.allowedIPs.isEmpty {
let allowedIPsString = peer.allowedIPs.map { $0.stringRepresentation() }.joined(separator: ", ")
output.append("AllowedIPs = \(allowedIPsString)\n")
}
if let endpoint = peer.endpoint {
output.append("Endpoint = \(endpoint.stringRepresentation())\n")
}
if let persistentKeepAlive = peer.persistentKeepAlive {
output.append("PersistentKeepalive = \(persistentKeepAlive)\n")
}
}
return output.data(using: .utf8)
}
}
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