viye/internal/plumbing/ip/ip.go (view raw)
| 1 | package ip |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "io" |
| 8 | "net" |
| 9 | "net/http" |
| 10 | "strings" |
| 11 | "time" |
| 12 | |
| 13 | "github.com/olexsmir/viye/internal/viye" |
| 14 | ) |
| 15 | |
| 16 | type Tool struct{} |
| 17 | |
| 18 | func (Tool) Name() string { return "ip" } |
| 19 | func (Tool) Match(ctx *viye.Context) bool { return len(ctx.Path) == 1 && ctx.Path[0] == "ip" } |
| 20 | func (Tool) Execute(ctx *viye.Context) (string, error) { |
| 21 | pip, perr := getPublicIP() |
| 22 | lip, lerr := getLocalIP() |
| 23 | if perr != nil && lerr != nil { |
| 24 | return "", fmt.Errorf("couldn't resolve public and local ips") |
| 25 | } |
| 26 | |
| 27 | var buf strings.Builder |
| 28 | _, _ = buf.WriteString("| ") |
| 29 | |
| 30 | if perr == nil && lerr == nil { |
| 31 | _, _ = buf.WriteString(pip) |
| 32 | _, _ = buf.WriteString(" / ") |
| 33 | _, _ = buf.WriteString(lip) |
| 34 | } |
| 35 | |
| 36 | if perr == nil && lerr != nil { |
| 37 | _, _ = buf.WriteString(pip) |
| 38 | } |
| 39 | |
| 40 | if lerr == nil && perr != nil { |
| 41 | _, _ = buf.WriteString(pip) |
| 42 | } |
| 43 | |
| 44 | _ = buf.WriteByte('\n') |
| 45 | return buf.String(), nil |
| 46 | } |
| 47 | |
| 48 | func getLocalIP() (string, error) { |
| 49 | addrs, err := net.InterfaceAddrs() |
| 50 | if err != nil { |
| 51 | return "", err |
| 52 | } |
| 53 | for _, addr := range addrs { |
| 54 | if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() { |
| 55 | if ipnet.IP.To4() != nil { |
| 56 | return ipnet.IP.String(), nil |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | return "", errors.New("couldn't get local error") |
| 61 | } |
| 62 | |
| 63 | func getPublicIP() (string, error) { |
| 64 | ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) |
| 65 | defer cancel() |
| 66 | |
| 67 | req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://ifconfig.me/ip", nil) |
| 68 | if err != nil { |
| 69 | return "", err |
| 70 | } |
| 71 | |
| 72 | resp, err := http.DefaultClient.Do(req) |
| 73 | if err != nil { |
| 74 | return "", err |
| 75 | } |
| 76 | defer resp.Body.Close() |
| 77 | |
| 78 | ip, err := io.ReadAll(resp.Body) |
| 79 | if err != nil { |
| 80 | return "", err |
| 81 | } |
| 82 | return strings.TrimSpace(string(ip)), nil |
| 83 | } |