| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package net |
| |
| import ( |
| "fmt" |
| "net" |
| "sort" |
| ) |
| |
| import ( |
| "github.com/pkg/errors" |
| ) |
| |
| type AddressPredicate = func(address *net.IPNet) bool |
| |
| func NonLoopback(address *net.IPNet) bool { |
| return !address.IP.IsLoopback() |
| } |
| |
| // GetAllIPs returns all IPs (IPv4 and IPv6) from the all network interfaces on the machine |
| func GetAllIPs(predicates ...AddressPredicate) ([]string, error) { |
| addrs, err := net.InterfaceAddrs() |
| if err != nil { |
| return nil, errors.Wrap(err, "could not list network interfaces") |
| } |
| var result []string |
| for _, address := range addrs { |
| if ipnet, ok := address.(*net.IPNet); ok { |
| matchedPredicate := true |
| for _, predicate := range predicates { |
| if !predicate(ipnet) { |
| matchedPredicate = false |
| break |
| } |
| } |
| if matchedPredicate { |
| result = append(result, ipnet.IP.String()) |
| } |
| } |
| } |
| sort.Strings(result) // sort so IPv4 are the first elements in the list |
| return result, nil |
| } |
| |
| // ToV6 return self if ip6 other return the v4 prefixed with ::ffff: |
| func ToV6(ip string) string { |
| parsedIp := net.ParseIP(ip) |
| if parsedIp.To4() != nil { |
| return fmt.Sprintf("::ffff:%x:%x", uint32(parsedIp[12])<<8+uint32(parsedIp[13]), uint32(parsedIp[14])<<8+uint32(parsedIp[15])) |
| } |
| return ip |
| } |
| |
| func IsAddressIPv6(address string) bool { |
| if address == "" { |
| return false |
| } |
| |
| ip := net.ParseIP(address) |
| if ip == nil { |
| return false |
| } |
| |
| return ip.To4() == nil |
| } |