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// IP represents an IPv4 or IPv6 address
type IP struct {
// IPv4 returns a new `IP` representing an IPv4 address
// IPv4FromOctets returns an IPv4 address for the given 4 octets
func IPv4FromOctets(o1, o2, o3, o4 uint8) IP {
return IPv4(uint32(o1)<<24 + uint32(o2)<<16 + uint32(o3)<<8 + uint32(o4))
}
// IPv6 returns a new `IP` representing an IPv6 address
func IPv6(higher, lower uint64) IP {
return IP{
// IPv6FromBlocks returns an IPv6 address for the given 8 blocks
func IPv6FromBlocks(b1, b2, b3, b4, b5, b6, b7, b8 uint16) IP {
return IPv6(
uint64(uint64(b1)<<48+uint64(b2)<<32+uint64(b3)<<16+uint64(b4)),
uint64(uint64(b5)<<48+uint64(b6)<<32+uint64(b7)<<16+uint64(b8)))
}
// Equal returns true if ip is equal to other
func (ip IP) Equal(other IP) bool {
return ip == other
}
// Compare compares two IP addresses (returns 0 if equal, -1 if `ip` is smaller than `other`, 1 if `ip` is greater than `other`)
return 0
}
if ip.higher > other.higher {
return 1
}
if ip.higher < other.higher {
return -1
}
if ip.lower > other.lower {
return 1
}
return -1
}
func (ip IP) String() string {
if ip.ipVersion == 6 {
return ip.stringIPv6()
}
return ip.stringIPv4()
}
func (ip IP) stringIPv6() string {
fmt.Println(ip.higher & 0xFFFF000000000000 >> 48)
return fmt.Sprintf("%X:%X:%X:%X:%X:%X:%X:%X",
ip.higher&0xFFFF000000000000>>48,
ip.higher&0x0000FFFF00000000>>32,
ip.higher&0x00000000FFFF0000>>16,
ip.higher&0x000000000000FFFF,
ip.lower&0xFFFF000000000000>>48,
ip.lower&0x0000FFFF00000000>>32,
ip.lower&0x00000000FFFF0000>>16,
ip.lower&0x000000000000FFFF)
}
func (ip IP) stringIPv4() string {
b := ip.Bytes()
return fmt.Sprintf("%d.%d.%d.%d", b[0], b[1], b[2], b[3])
}
// Bytes returns the byte representation of an IP address
func (ip IP) Bytes() []byte {
if ip.ipVersion == 6 {
return ip.bytesIPv6()
}
return ip.bytesIPv4()
func (ip IP) bytesIPv4() []byte {
return []byte{
byte(u & 0xFF000000 >> 24),
byte(u & 0x00FF0000 >> 16),
byte(u & 0x0000FF00 >> 8),
byte(u & 0x000000FF),
}
}
func (ip IP) bytesIPv6() []byte {
return []byte{
byte(ip.higher & 0xFF00000000000000 >> 56),
byte(ip.higher & 0x00FF000000000000 >> 48),
byte(ip.higher & 0x0000FF0000000000 >> 40),
byte(ip.higher & 0x000000FF00000000 >> 32),
byte(ip.higher & 0x00000000FF000000 >> 24),
byte(ip.higher & 0x0000000000FF0000 >> 16),
byte(ip.higher & 0x000000000000FF00 >> 8),
byte(ip.higher & 0x00000000000000FF),
byte(ip.lower & 0xFF00000000000000 >> 56),
byte(ip.lower & 0x00FF000000000000 >> 48),
byte(ip.lower & 0x0000FF0000000000 >> 40),
byte(ip.lower & 0x000000FF00000000 >> 32),
byte(ip.lower & 0x00000000FF000000 >> 24),
byte(ip.lower & 0x0000000000FF0000 >> 16),
byte(ip.lower & 0x000000000000FF00 >> 8),
byte(ip.lower & 0x00000000000000FF),
}
// ToNetIP converts the IP address in a `net.IP`
func (ip IP) ToNetIP() net.IP {
return net.IP(ip.Bytes())
}