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installer.go
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installer.go
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// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
//go:build linux
package nftables
import (
"fmt"
"github.com/TeaOSLab/EdgeCommon/pkg/nodeconfigs"
teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
"github.com/TeaOSLab/EdgeNode/internal/events"
"github.com/TeaOSLab/EdgeNode/internal/goman"
"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
executils "github.com/TeaOSLab/EdgeNode/internal/utils/exec"
"github.com/iwind/TeaGo/logs"
"os"
"runtime"
"time"
)
func init() {
if !teaconst.IsMain {
return
}
events.On(events.EventReload, func() {
// linux only
if runtime.GOOS != "linux" {
return
}
nodeConfig, err := nodeconfigs.SharedNodeConfig()
if err != nil {
return
}
if nodeConfig == nil || !nodeConfig.AutoInstallNftables {
return
}
if os.Getgid() == 0 { // root user only
if len(NftExePath()) > 0 {
return
}
goman.New(func() {
err := NewInstaller().Install()
if err != nil {
// 不需要传到API节点
logs.Println("[NFTABLES]install nftables failed: " + err.Error())
}
})
}
})
}
// NftExePath 查找nftables可执行文件路径
func NftExePath() string {
path, _ := executils.LookPath("nft")
if len(path) > 0 {
return path
}
for _, possiblePath := range []string{
"/usr/sbin/nft",
} {
_, err := os.Stat(possiblePath)
if err == nil {
return possiblePath
}
}
return ""
}
type Installer struct {
}
func NewInstaller() *Installer {
return &Installer{}
}
func (this *Installer) Install() error {
// linux only
if runtime.GOOS != "linux" {
return nil
}
// 检查是否已经存在
if len(NftExePath()) > 0 {
return nil
}
var cmd *executils.Cmd
// check dnf
dnfExe, err := executils.LookPath("dnf")
if err == nil {
cmd = executils.NewCmd(dnfExe, "-y", "install", "nftables")
}
// check apt
if cmd == nil {
aptExe, err := executils.LookPath("apt")
if err == nil {
cmd = executils.NewCmd(aptExe, "install", "nftables")
}
}
// check yum
if cmd == nil {
yumExe, err := executils.LookPath("yum")
if err == nil {
cmd = executils.NewCmd(yumExe, "-y", "install", "nftables")
}
}
if cmd == nil {
return nil
}
cmd.WithTimeout(10 * time.Minute)
cmd.WithStderr()
err = cmd.Run()
if err != nil {
return fmt.Errorf("%w: %s", err, cmd.Stderr())
}
remotelogs.Println("NFTABLES", "installed nftables with command '"+cmd.String()+"' successfully")
return nil
}