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87 lines
1.7 KiB
87 lines
1.7 KiB
package util |
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import ( |
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"bytes" |
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"encoding/binary" |
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"encoding/hex" |
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"math/big" |
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"math/rand" |
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"strconv" |
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"time" |
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"unicode/utf8" |
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"../../cnutil" |
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) |
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var Diff1 *big.Int |
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func init() { |
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Diff1 = new(big.Int) |
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Diff1.SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16) |
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} |
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func Random() string { |
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min := int64(100000000000000) |
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max := int64(999999999999999) |
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n := rand.Int63n(max-min+1) + min |
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return strconv.FormatInt(n, 10) |
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} |
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func MakeTimestamp() int64 { |
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return time.Now().UnixNano() / int64(time.Millisecond) |
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} |
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func GetTargetHex(diff int64) (uint32, string) { |
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padded := make([]byte, 32) |
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diff2 := new(big.Int) |
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diff2.SetInt64(int64(diff)) |
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diff3 := new(big.Int) |
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diff3 = diff3.Div(Diff1, diff2) |
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diffBuff := diff3.Bytes() |
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copy(padded[32-len(diffBuff):], diffBuff) |
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buff := padded[0:4] |
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var target uint32 |
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targetBuff := bytes.NewReader(buff) |
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binary.Read(targetBuff, binary.LittleEndian, &target) |
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targetHex := hex.EncodeToString(reverse(buff)) |
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return target, targetHex |
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} |
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func GetHashDifficulty(hashBytes []byte) *big.Int { |
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diff := new(big.Int) |
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diff.SetBytes(reverse(hashBytes)) |
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return diff.Div(Diff1, diff) |
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} |
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func ValidateAddress(addy string, poolAddy string) bool { |
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if len(addy) != len(poolAddy) { |
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return false |
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} |
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prefix, _ := utf8.DecodeRuneInString(addy) |
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poolPrefix, _ := utf8.DecodeRuneInString(poolAddy) |
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if prefix != poolPrefix { |
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return false |
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} |
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return cnutil.ValidateAddress(addy) |
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} |
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func StringInSlice(a string, list []string) bool { |
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for _, b := range list { |
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if b == a { |
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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 reverse(src []byte) []byte { |
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dst := make([]byte, len(src)) |
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for i := len(src); i > 0; i-- { |
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dst[len(src)-i] = src[i-1] |
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} |
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return dst |
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}
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