56 lines
876 B
Go
56 lines
876 B
Go
package hostmeta
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import (
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"net"
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"os"
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"sort"
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)
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func Hostname() (string, error) {
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return os.Hostname()
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}
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func IPs() []string {
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seen := make(map[string]struct{})
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var ips []string
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ifaces, err := net.Interfaces()
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if err != nil {
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return nil
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}
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for _, iface := range ifaces {
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if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
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continue
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}
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addrs, err := iface.Addrs()
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if err != nil {
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continue
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}
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for _, addr := range addrs {
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var ip net.IP
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switch v := addr.(type) {
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case *net.IPNet:
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ip = v.IP
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case *net.IPAddr:
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ip = v.IP
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default:
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continue
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}
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if ip == nil || ip.IsLoopback() {
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continue
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}
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if ip4 := ip.To4(); ip4 != nil {
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ip = ip4
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}
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s := ip.String()
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if _, ok := seen[s]; ok {
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continue
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}
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seen[s] = struct{}{}
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ips = append(ips, s)
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}
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}
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sort.Strings(ips)
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return ips
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}
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