mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-05-06 21:52:54 +08:00
125 lines
2.9 KiB
Go
125 lines
2.9 KiB
Go
// Copyright 2019 Yunion
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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 main
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import (
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"fmt"
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"os"
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"time"
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"yunion.io/x/pkg/errors"
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"yunion.io/x/structarg"
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"yunion.io/x/onecloud/pkg/hostman/hostinfo/hostdhcp"
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"yunion.io/x/onecloud/pkg/util/atexit"
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)
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type Options struct {
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Help bool `help:"Show help"`
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Interface string `help:"Listening interface, e.g. eth0"`
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Ip string `help:"Listening interface IP, e.g. 192.168.22.2"`
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Port int `help:"listening port" default:"67"`
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Relay string `help:"Relay server address, e.g. 192.168.22.23"`
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Ip6 string `help:"Listening interface IP, e.g. 2001:db8::1"`
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Port6 int `help:"listening port" default:"547"`
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Relay6 string `help:"Relay server address, e.g. 2001:db8::23"`
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}
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func relayMain() error {
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parse, err := structarg.NewArgumentParser(&Options{},
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"dhcprelay",
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"An independent dhcp relay.",
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`See "dhcprelay --help" for help.`)
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if err != nil {
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return err
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}
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err = parse.ParseArgs(os.Args[1:], false)
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if err != nil {
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return err
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}
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options := parse.Options().(*Options)
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if options.Help {
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fmt.Print(parse.HelpString())
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return errors.Error("Need help!")
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}
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if len(options.Interface) == 0 {
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return errors.Error("Missing interface")
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}
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if len(options.Ip) == 0 && len(options.Ip6) == 0 {
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return errors.Error("Missing interface IP or IP6")
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}
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if len(options.Ip) > 0 {
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if len(options.Relay) == 0 {
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return errors.Error("Missing DHCP relay server or relay server6")
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}
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relayConfig := &hostdhcp.SDHCPRelayUpstream{}
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relayConfig.IP = options.Relay
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relayConfig.Port = 67
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srv, err := hostdhcp.NewGuestDHCPServer(options.Interface, options.Port, relayConfig)
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if err != nil {
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return errors.Wrap(err, "NewGuestDHCPServer")
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}
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srv.Start(false)
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srv.RelaySetup(options.Ip)
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}
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if len(options.Ip6) > 0 {
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if len(options.Relay6) == 0 {
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return errors.Error("Missing DHCP relay server or relay server6")
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}
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relayConfig6 := &hostdhcp.SDHCPRelayUpstream{}
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relayConfig6.IP = options.Relay6
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relayConfig6.Port = options.Port6
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srv6, err := hostdhcp.NewGuestDHCP6Server(options.Interface, options.Port6, relayConfig6)
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if err != nil {
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return errors.Wrap(err, "NewGuestDHCP6Server")
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}
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srv6.Start(false)
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srv6.RelaySetup(options.Ip6)
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}
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for {
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time.Sleep(time.Hour)
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}
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// return nil
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}
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func main() {
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defer atexit.Handle()
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err := relayMain()
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if err != nil {
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fmt.Fprintf(os.Stdout, "Error: %s", err)
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os.Exit(-1)
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}
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}
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