84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
package misc
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import (
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"fmt"
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"net"
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"os"
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"os/exec"
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"regexp"
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"runtime"
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"strings"
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"github.com/sirupsen/logrus"
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)
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// GetLocalIP ...
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// hostname -i / -I
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func GetLocalIP() string {
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// 0=1, 2, 3, .. ,n
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localIPIndexStr := os.Getenv("LOCAL_IP_INDEX")
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var cmd string
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if localIPIndexStr == "" {
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cmd = "hostname -i"
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} else if runtime.GOOS == "darwin" { // macos
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// 172.*.*.* are used for out-of-band Network/container network
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cmd = `ifconfig|grep "inet "|grep -v 127.0.0.1|grep -v "inet 172."|head -1|cut -d ' ' -f 2`
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} else { // linux
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cmd = fmt.Sprintf("hostname -I | awk '{print $%s}'", localIPIndexStr)
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}
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out, _ := exec.Command("/bin/bash", "-c", cmd).Output()
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localIP := strings.Split(string(out), " ")[0]
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// remove '\n'
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localIP = strings.Replace(localIP, "\n", "", -1)
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reIPv4 := regexp.MustCompile("^([0-9]+\\.){3}[0-9]+$")
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if !reIPv4.MatchString(localIP) {
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logrus.Warnf("error get_local_ip, localIP=%s\n", localIP)
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}
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return localIP
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}
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// GetLocalIPv4Addr ...
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// @Deprecated
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func getLocalIPv4Addr() string {
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addrs, err := net.InterfaceAddrs()
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if err != nil {
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fmt.Println(err)
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}
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var ip string
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for _, address := range addrs {
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if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
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if ipnet.IP.To4() != nil {
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ip = ipnet.IP.String()
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}
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}
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}
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return ip
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}
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// GetLocalIPv4AddrByInterface ...
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// @Deprecated
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func getLocalIPv4AddrByInterface(interfaceName string) string {
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interfaces, err := net.Interfaces()
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if err != nil {
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panic(err)
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}
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var ip string
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for _, interf := range interfaces {
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if interf.Name == "en7" {
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addrs, err := interf.Addrs()
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if err != nil {
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panic(err)
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}
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for _, add := range addrs {
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if ipnet, ok := add.(*net.IPNet); ok {
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if ipnet.IP.To4() != nil {
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ip = ipnet.IP.String()
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}
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}
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}
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}
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}
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return ip
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}
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