mirror of https://github.com/k3s-io/k3s
84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
// +build windows
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// Copyright 2015 flannel 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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// http://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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package routing
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import (
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"fmt"
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"github.com/flannel-io/flannel/pkg/powershell"
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"net"
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)
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// Router manages network routes on Windows OS using MSFT_NetRoute
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// See also https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/hh872448(v%3Dvs.85)
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type RouterWindows struct{}
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func (r RouterWindows) GetAllRoutes() ([]Route, error) {
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return parseNetRoutes("@(Get-NetRoute | Select-Object -Property IfIndex,DestinationPrefix,NextHop)")
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}
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func (r RouterWindows) GetRoutesFromInterfaceToSubnet(interfaceIndex int, destinationSubnet *net.IPNet) ([]Route, error) {
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return parseNetRoutes(fmt.Sprintf("@(Get-NetRoute -InterfaceIndex %d -DestinationPrefix %s | Select-Object -Property IfIndex,DestinationPrefix,NextHop)", interfaceIndex, destinationSubnet.String()))
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}
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func (r RouterWindows) CreateRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
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_, err := powershell.RunCommandf("New-NetRoute -InterfaceIndex %d -DestinationPrefix %s -NextHop %s", interfaceIndex, destinationSubnet.String(), gatewayAddress.String())
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return err
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}
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func (r RouterWindows) DeleteRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
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_, err := powershell.RunCommandf("Remove-NetRoute -InterfaceIndex %d -DestinationPrefix %s -NextHop %s -Verbose -Confirm:$false", interfaceIndex, destinationSubnet.String(), gatewayAddress.String())
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return err
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}
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type winNetRoute struct {
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IfIndex int
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DestinationPrefix string
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NextHop string
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}
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func parseNetRoutes(cmd string) ([]Route, error) {
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powerShellJsonData := make([]winNetRoute, 0)
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err := powershell.RunCommandWithJsonResult(cmd, &powerShellJsonData)
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if err != nil {
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return nil, err
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}
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routes := make([]Route, 0)
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for _, r := range powerShellJsonData {
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route := Route{
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InterfaceIndex: r.IfIndex,
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}
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_, destinationSubnet, err := net.ParseCIDR(r.DestinationPrefix)
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if err != nil {
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continue
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}
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route.DestinationSubnet = destinationSubnet
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gatewayAddress := net.ParseIP(r.NextHop)
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if gatewayAddress == nil {
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continue
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}
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route.GatewayAddress = gatewayAddress
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routes = append(routes, route)
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}
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return routes, nil
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}
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