functions for encoding and decoding ip addresses to hex

Signed-off-by: Michael <michael.lindman@gmail.com>

nettools/net.go

@@ -1,9 +1,12 @@
 package nettools
 
 import (
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"html"
+	"log"
+	"math/big"
 	"net"
 	"net/http"
 
@@ -24,6 +27,34 @@ func IP(r *http.Request) (net.IP, error) {
 	return net.ParseIP(ip), nil
 }
 
+// Inet6Aton Encodes ip address to hex
+func Inet6Aton(ip net.IP) string {
+	ipv4 := false
+	if ip.To4() != nil {
+		ipv4 = true
+	}
+	ipInt := big.NewInt(0)
+	if ipv4 {
+		ipInt.SetBytes(ip.To4())
+		fmt.Println(ipInt)
+		ipHex := hex.EncodeToString(ipInt.Bytes())
+		return ipHex
+	}
+	ipInt.SetBytes(ip.To16())
+	ipHex := hex.EncodeToString(ipInt.Bytes())
+	return ipHex
+}
+
+// Inet6AtonDecode decodes ip address from hex
+func Inet6AtonDecode(ipHex string) (ip net.IP) {
+	hex, err := hex.DecodeString(ipHex)
+	if err != nil {
+		log.Println(err)
+		return net.ParseIP("0.0.0.0")
+	}
+	return net.IP(hex)
+}
+
 // Hostname returns hostname
 func Hostname(ip net.IP) ([]string, error) {
 	names, err := net.LookupAddr(ip.String())