/*
* Cmp compares to c4ids.
* There are 3 possible return values.
* -1 : Argument id is less than calling id.
* 0: Argument id and calling id are identical.
* +1: Argument id is greater than calling id.
* Comparison is done on the actual numerical value of the ids.
* Not the string representation.
*/
func (x *ID) Cmp(y *ID) int {
if y == nil {
return -1
}
bigX := big.Int(*x)
bigY := big.Int(*y)
return bigX.Cmp(&bigY)
}
// ListenStreamArgs returns the arguments required to be passed to
// net.ListenTCP(). If the Mask of ipv6 is not a /128, ListenStreamArgs()
// will fail. See Host() to create an IPv6Addr with its mask set to /128.
func (ipv6 IPv6Addr) ListenStreamArgs() (network, listenArgs string) {
ipv6Mask := big.Int(*ipv6.Mask)
if ipv6Mask.Cmp(ipv6HostMask) != 0 {
return "tcp6", ""
}
return "tcp6", fmt.Sprintf("[%s]:%d", ipv6.NetIP().String(), ipv6.Port)
}
// DialPacketArgs returns the arguments required to be passed to
// net.DialUDP(). If the Mask of ipv6 is not a /128 or the Port is 0,
// DialPacketArgs() will fail. See Host() to create an IPv6Addr with its
// mask set to /128.
func (ipv6 IPv6Addr) DialPacketArgs() (network, dialArgs string) {
ipv6Mask := big.Int(*ipv6.Mask)
if ipv6Mask.Cmp(ipv6HostMask) != 0 || ipv6.Port == 0 {
return "udp6", ""
}
return "udp6", fmt.Sprintf("[%s]:%d", ipv6.NetIP().String(), ipv6.Port)
}
// MarshalJSON adds output support for package encoding/json.
func (id *ID) MarshalJSON() ([]byte, error) {
bigID := big.Int(*id)
if bigID.Cmp(big.NewInt(0)) == 0 {
return []byte(`""`), nil
}
return []byte(`"` + id.String() + `"`), nil
}
func TestAppendOrder(t *testing.T) {
is := is.New(t)
byteData := [4][]byte{
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 58},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0d, 0x24},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0xfa, 0x28},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xac, 0xad, 0x10},
}
expectedIDs := [4]string{
`c41111111111111111111111111111111111111111111111111111111111111111111111111111111111111121`,
`c41111111111111111111111111111111111111111111111111111111111111111111111111111111111111211`,
`c41111111111111111111111111111111111111111111111111111111111111111111111111111111111112111`,
`c41111111111111111111111111111111111111111111111111111111111111111111111111111111111121111`,
}
for k := 0; k < 4; k++ {
b := byteData[k]
bignum := big.NewInt(0)
bignum = bignum.SetBytes(b)
id := asset.ID(*bignum)
is.Equal(id.String(), expectedIDs[k])
id2, err := asset.ParseID(expectedIDs[k])
is.NoErr(err)
bignum2 := big.Int(*id2)
b = (&bignum2).Bytes()
size := len(b)
for size < 64 {
b = append([]byte{0}, b...)
size++
}
for i, bb := range b {
is.Equal(bb, byteData[k][i])
}
}
}
// Return the 64 raw bytes of a c4 id. I.e. the actual sha512.
func (id *ID) RawBytes() (b []byte) {
bignum := big.Int(*id)
b_raw := (&bignum).Bytes()
bytes64 := make([]byte, 64)
padding := 64 - len(b_raw)
// Can't use copy!
// It doesn't properly handle leading zeros
// copy(bytes64, b_raw)
for i, bb := range b_raw {
bytes64[padding+i] = bb
}
return bytes64[:]
}
// ipv6AddrInit is called once at init()
func ipv6AddrInit() {
// Sorted for human readability
ipv6AddrAttrs = []AttrName{
"size", // Same position as in IPv6 for output consistency
"uint128",
}
ipv6AddrAttrMap = map[AttrName]func(ipv6 IPv6Addr) string{
"size": func(ipv6 IPv6Addr) string {
netSize := big.NewInt(1)
netSize = netSize.Lsh(netSize, uint(IPv6len*8-ipv6.Maskbits()))
return netSize.Text(10)
},
"uint128": func(ipv6 IPv6Addr) string {
b := big.Int(*ipv6.Address)
return b.Text(10)
},
}
}
// Bytes encodes the written bytes to C4 ID format.
func (id *ID) Bytes() []byte {
var bigNum big.Int
bigID := big.Int(*id)
bigNum.Set(&bigID)
bigBase := big.NewInt(base)
bigZero := big.NewInt(0)
bigMod := new(big.Int)
var encoded []byte
for bigNum.Cmp(bigZero) > 0 {
bigNum.DivMod(&bigNum, bigBase, bigMod)
encoded = append([]byte{charset[bigMod.Int64()]}, encoded...)
}
// padding
diff := idlen - 2 - len(encoded)
encoded = append(bytes.Repeat(lowbyte, diff), encoded...)
// c4... prefix
encoded = append(prefix, encoded...)
return encoded
}
func TestAllFFFF(t *testing.T) {
is := is.New(t)
var b []byte
for i := 0; i < 64; i++ {
b = append(b, 0xFF)
}
bignum := big.NewInt(0)
bignum = bignum.SetBytes(b)
id := asset.ID(*bignum)
is.Equal(id.String(), `c467RPWkcUr5dga8jgywjSup7CMoA9FNqkNjEFgAkEpF9vNktFnx77e2Js11EDL3BNu9MaKFUbacZRt1HYym4b8RNp`)
id2, err := asset.ParseID(`c467RPWkcUr5dga8jgywjSup7CMoA9FNqkNjEFgAkEpF9vNktFnx77e2Js11EDL3BNu9MaKFUbacZRt1HYym4b8RNp`)
is.NoErr(err)
bignum2 := big.Int(*id2)
b = (&bignum2).Bytes()
for _, bb := range b {
is.Equal(bb, 0xFF)
}
}
func TestAll0000(t *testing.T) {
is := is.New(t)
var b []byte
for i := 0; i < 64; i++ {
b = append(b, 0x00)
}
bignum := big.NewInt(0)
bignum = bignum.SetBytes(b)
id := asset.ID(*bignum)
is.Equal(id.String(), `c41111111111111111111111111111111111111111111111111111111111111111111111111111111111111111`)
id2, err := asset.ParseID(`c41111111111111111111111111111111111111111111111111111111111111111111111111111111111111111`)
is.NoErr(err)
bignum2 := big.Int(*id2)
b = (&bignum2).Bytes()
// This loop is unnecessary, bignum zero has only 1 byte.
for _, bb := range b {
is.Equal(bb, 0x00)
}
}
// NetIPMask create a new net.IPMask from the IPv6Addr.
func (ipv6 IPv6Addr) NetIPMask() *net.IPMask {
ipv6Mask := make(net.IPMask, IPv6len)
m := big.Int(*ipv6.Mask)
copy(ipv6Mask, m.Bytes())
return &ipv6Mask
}
// AddressHexString returns a string with the IPv6Addr address represented as
// a sequence of hex characters. This method is useful for debugging or by
// operators who want to inspect an address.
func (ipv6 IPv6Addr) AddressHexString() string {
bi := big.Int(*ipv6.Address)
return fmt.Sprintf("%032s", bi.Text(16))
}
// AddressBinString returns a string with the IPv6Addr's Address represented
// as a sequence of '0' and '1' characters. This method is useful for
// debugging or by operators who want to inspect an address.
func (ipv6 IPv6Addr) AddressBinString() string {
bi := big.Int(*ipv6.Address)
return fmt.Sprintf("%0128s", bi.Text(2))
}