123 lines
2.4 KiB
Go
123 lines
2.4 KiB
Go
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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package netutil
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import (
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"io"
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"net"
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"net/http"
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"strings"
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"time"
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)
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func DetectPublicIP(family string) string {
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var urls []string
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if family == "4" {
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urls = []string{"https://api.ipify.org", "https://ipv4.icanhazip.com"}
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} else if family == "6" {
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urls = []string{"https://api64.ipify.org", "https://ipv6.icanhazip.com"}
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}
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client := &http.Client{Timeout: 10 * time.Second}
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for _, u := range urls {
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req, err := http.NewRequest("GET", u, nil)
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if err != nil {
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continue
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}
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req.Header.Set("User-Agent", "livekitctl/0.1")
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resp, err := client.Do(req)
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if err != nil {
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continue
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}
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body, err := io.ReadAll(resp.Body)
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resp.Body.Close()
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if err != nil {
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continue
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}
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ip := strings.TrimSpace(strings.Split(string(body), "\n")[0])
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if family == "4" {
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if parsed := net.ParseIP(ip); parsed != nil && parsed.To4() != nil {
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return ip
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}
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} else {
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if parsed := net.ParseIP(ip); parsed != nil && parsed.To4() == nil {
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return ip
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}
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}
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}
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return ""
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}
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func HasGlobalIPv6() bool {
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addrs, err := net.InterfaceAddrs()
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if err != nil {
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return false
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}
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for _, addr := range addrs {
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ipNet, ok := addr.(*net.IPNet)
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if !ok {
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continue
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}
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ip := ipNet.IP
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if ip.To4() != nil {
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continue
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}
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if ip.IsGlobalUnicast() && !ip.IsPrivate() {
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return true
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}
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}
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return false
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}
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func PrimaryPrivateIPv4() string {
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conn, err := net.Dial("udp", "8.8.8.8:80")
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if err != nil {
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return ""
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}
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defer conn.Close()
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localAddr := conn.LocalAddr().(*net.UDPAddr)
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ip := localAddr.IP.To4()
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if ip == nil {
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return ""
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}
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return ip.String()
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}
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func IsPrivateIPv4(ipStr string) bool {
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ip := net.ParseIP(ipStr)
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if ip == nil {
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return false
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}
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ip4 := ip.To4()
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if ip4 == nil {
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return false
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}
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return ip.IsPrivate()
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}
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