wehub-resource-sync
680845cb1c
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85 lines
3.3 KiB
Swift
85 lines
3.3 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2026 Apple Inc. and the Containerization project authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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import ContainerizationExtras
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import Logging
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extension VirtualMachineAgent {
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/// Configure a single network interface inside the sandbox: assign addresses,
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/// bring the link up, and (when requested) install the link/default routes.
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func setupInterface(
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_ interface: any Interface,
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name: String,
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setDefaultRoute: Bool,
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logger: Logger?
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) async throws {
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logger?.debug("setting up interface \(name) with v4 \(interface.ipv4Address) v6 \(interface.ipv6Address?.description ?? "<none>")")
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try await addressAdd(
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name: name,
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address: .init(ipv4Address: interface.ipv4Address, ipv6Address: interface.ipv6Address)
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)
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try await up(name: name, mtu: interface.mtu)
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guard setDefaultRoute else { return }
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let ipv4Address = interface.ipv4Address
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let ipv4Gateway = interface.ipv4Gateway
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let ipv6Gateway = interface.ipv6Gateway
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let ipv6Address = interface.ipv6Address
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let needsIPv4LinkRoute: Bool
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if let ipv4Gateway {
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needsIPv4LinkRoute = !ipv4Address.contains(ipv4Gateway)
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} else {
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needsIPv4LinkRoute = false
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}
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let needsIPv6LinkRoute: Bool
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if let ipv6Gateway, let ipv6Address {
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needsIPv6LinkRoute = !ipv6Address.contains(ipv6Gateway)
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} else {
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needsIPv6LinkRoute = false
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}
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if needsIPv4LinkRoute, let ipv4Gateway {
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logger?.debug("v4 gateway \(ipv4Gateway) is outside subnet \(ipv4Address), adding a route first")
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}
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if needsIPv6LinkRoute, let ipv6Gateway, let ipv6Address {
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logger?.debug("v6 gateway \(ipv6Gateway) is outside subnet \(ipv6Address), adding a route first")
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}
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if needsIPv4LinkRoute || needsIPv6LinkRoute {
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try await routeAddLink(
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name: name,
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route: .init(
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ipv4Destination: needsIPv4LinkRoute ? ipv4Gateway : nil,
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ipv4Source: needsIPv4LinkRoute ? ipv4Address.address : nil,
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ipv6Destination: needsIPv6LinkRoute ? ipv6Gateway : nil,
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ipv6Source: needsIPv6LinkRoute ? ipv6Address?.address : nil
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)
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)
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}
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if ipv4Gateway == nil && ipv6Gateway == nil {
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logger?.debug("no gateway for \(name)")
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}
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try await routeAddDefault(
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name: name,
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route: .init(ipv4Gateway: ipv4Gateway, ipv6Gateway: ipv6Gateway)
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)
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}
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}
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