Files
container/Sources/Containerization/NATNetworkInterface.swift
T
2025-09-13 17:37:15 -07:00

80 lines
2.6 KiB
Swift

//===----------------------------------------------------------------------===//
// Copyright © 2025 Apple Inc. and the Containerization project authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
#if os(macOS)
import vmnet
import Virtualization
import ContainerizationError
import Foundation
import Synchronization
/// An interface that uses NAT to provide an IP address for a given
/// container/virtual machine.
@available(macOS 26, *)
public final class NATNetworkInterface: Interface, Sendable {
public let address: String
public let gateway: String?
public let macAddress: String?
@available(macOS 26, *)
// `reference` isn't used concurrently.
public nonisolated(unsafe) let reference: vmnet_network_ref!
@available(macOS 26, *)
public init(
address: String,
gateway: String?,
reference: sending vmnet_network_ref,
macAddress: String? = nil
) {
self.address = address
self.gateway = gateway
self.macAddress = macAddress
self.reference = reference
}
@available(macOS, obsoleted: 26, message: "Use init(address:gateway:reference:macAddress:) instead")
public init(
address: String,
gateway: String?,
macAddress: String? = nil
) {
self.address = address
self.gateway = gateway
self.macAddress = macAddress
self.reference = nil
}
}
@available(macOS 26, *)
extension NATNetworkInterface: VZInterface {
public func device() throws -> VZVirtioNetworkDeviceConfiguration {
let config = VZVirtioNetworkDeviceConfiguration()
if let macAddress = self.macAddress {
guard let mac = VZMACAddress(string: macAddress) else {
throw ContainerizationError(.invalidArgument, message: "invalid mac address \(macAddress)")
}
config.macAddress = mac
}
config.attachment = VZVmnetNetworkDeviceAttachment(network: self.reference)
return config
}
}
#endif