f6e55962a8
* Don't expand mem on empty value * Removed all coinbase logs for PV42 * Removed C++ bug stuff for LOG*
57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
package chain
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/ethutil"
|
|
"github.com/ethereum/go-ethereum/state"
|
|
)
|
|
|
|
func CreateBloom(block *Block) []byte {
|
|
bin := new(big.Int)
|
|
for _, receipt := range block.Receipts() {
|
|
bin.Or(bin, LogsBloom(receipt.logs))
|
|
}
|
|
|
|
return ethutil.LeftPadBytes(bin.Bytes(), 64)
|
|
}
|
|
|
|
func LogsBloom(logs state.Logs) *big.Int {
|
|
bin := new(big.Int)
|
|
for _, log := range logs {
|
|
data := [][]byte{log.Address}
|
|
for _, topic := range log.Topics {
|
|
data = append(data, topic)
|
|
}
|
|
|
|
for _, b := range data {
|
|
bin.Or(bin, ethutil.BigD(bloom9(crypto.Sha3(b)).Bytes()))
|
|
}
|
|
|
|
//if log.Data != nil {
|
|
// data = append(data, log.Data)
|
|
//}
|
|
}
|
|
|
|
return bin
|
|
}
|
|
|
|
func bloom9(b []byte) *big.Int {
|
|
r := new(big.Int)
|
|
for _, i := range []int{0, 2, 4} {
|
|
t := big.NewInt(1)
|
|
b := uint(b[i+1]) + 256*(uint(b[i])&1)
|
|
r.Or(r, t.Lsh(t, b))
|
|
}
|
|
|
|
return r
|
|
}
|
|
|
|
func BloomLookup(bin, topic []byte) bool {
|
|
bloom := ethutil.BigD(bin)
|
|
cmp := bloom9(crypto.Sha3(topic))
|
|
|
|
return bloom.And(bloom, cmp).Cmp(cmp) == 0
|
|
}
|