mirror of
https://github.com/scroll-tech/scroll.git
synced 2026-01-14 00:18:03 -05:00
120 lines
3.6 KiB
Go
120 lines
3.6 KiB
Go
package utils
|
|
|
|
import (
|
|
"context"
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/accounts/abi"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/ethclient"
|
|
|
|
backendabi "bridge-history-api/abi"
|
|
)
|
|
|
|
// Keccak2 compute the keccack256 of two concatenations of bytes32
|
|
func Keccak2(a common.Hash, b common.Hash) common.Hash {
|
|
return common.BytesToHash(crypto.Keccak256(append(a.Bytes()[:], b.Bytes()[:]...)))
|
|
}
|
|
|
|
// GetSafeBlockNumber get the safe block number, which is the current block number minus the confirmations
|
|
func GetSafeBlockNumber(ctx context.Context, client *ethclient.Client, confirmations uint64) (uint64, error) {
|
|
number, err := client.BlockNumber(ctx)
|
|
if err != nil || number <= confirmations {
|
|
return 0, err
|
|
}
|
|
number = number - confirmations
|
|
return number, nil
|
|
}
|
|
|
|
// UnpackLog unpacks a retrieved log into the provided output structure.
|
|
// @todo: add unit test.
|
|
func UnpackLog(c *abi.ABI, out interface{}, event string, log types.Log) error {
|
|
if log.Topics[0] != c.Events[event].ID {
|
|
return fmt.Errorf("event signature mismatch")
|
|
}
|
|
if len(log.Data) > 0 {
|
|
if err := c.UnpackIntoInterface(out, event, log.Data); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
var indexed abi.Arguments
|
|
for _, arg := range c.Events[event].Inputs {
|
|
if arg.Indexed {
|
|
indexed = append(indexed, arg)
|
|
}
|
|
}
|
|
return abi.ParseTopics(out, indexed, log.Topics[1:])
|
|
}
|
|
|
|
// ComputeMessageHash compute the message hash
|
|
func ComputeMessageHash(
|
|
sender common.Address,
|
|
target common.Address,
|
|
value *big.Int,
|
|
messageNonce *big.Int,
|
|
message []byte,
|
|
) common.Hash {
|
|
data, _ := backendabi.L2ScrollMessengerABI.Pack("relayMessage", sender, target, value, messageNonce, message)
|
|
return common.BytesToHash(crypto.Keccak256(data))
|
|
}
|
|
|
|
type commitBatchArgs struct {
|
|
Version uint8
|
|
ParentBatchHeader []byte
|
|
Chunks [][]byte
|
|
SkippedL1MessageBitmap []byte
|
|
}
|
|
|
|
// GetBatchRangeFromCalldataV2 find the block range from calldata, both inclusive.
|
|
func GetBatchRangeFromCalldataV2(calldata []byte) (uint64, uint64, uint64, error) {
|
|
method := backendabi.ScrollChainV2ABI.Methods["commitBatch"]
|
|
values, err := method.Inputs.Unpack(calldata[4:])
|
|
if err != nil {
|
|
// special case: import genesis batch
|
|
method = backendabi.ScrollChainV2ABI.Methods["importGenesisBatch"]
|
|
_, err2 := method.Inputs.Unpack(calldata[4:])
|
|
if err2 == nil {
|
|
// genesis batch
|
|
return 0, 0, 0, nil
|
|
}
|
|
// none of "commitBatch" and "importGenesisBatch" match, give up
|
|
return 0, 0, 0, err
|
|
}
|
|
args := commitBatchArgs{}
|
|
err = method.Inputs.Copy(&args, values)
|
|
if err != nil {
|
|
return 0, 0, 0, err
|
|
}
|
|
|
|
var startBlock uint64
|
|
var finishBlock uint64
|
|
|
|
// decode batchIndex from ParentBatchHeader
|
|
if len(args.ParentBatchHeader) < 9 {
|
|
return 0, 0, 0, errors.New("invalid parent batch header")
|
|
}
|
|
batchIndex := binary.BigEndian.Uint64(args.ParentBatchHeader[1:9]) + 1
|
|
|
|
// decode blocks from chunk and assume that there's no empty chunk
|
|
// | 1 byte | 60 bytes | ... | 60 bytes |
|
|
// | num blocks | block 1 | ... | block n |
|
|
if len(args.Chunks) == 0 {
|
|
return 0, 0, 0, errors.New("invalid chunks")
|
|
}
|
|
chunk := args.Chunks[0]
|
|
block := chunk[1:61] // first block in chunk
|
|
startBlock = binary.BigEndian.Uint64(block[0:8])
|
|
|
|
chunk = args.Chunks[len(args.Chunks)-1]
|
|
lastBlockIndex := int(chunk[0]) - 1
|
|
block = chunk[1+lastBlockIndex*60 : 1+lastBlockIndex*60+60] // last block in chunk
|
|
finishBlock = binary.BigEndian.Uint64(block[0:8])
|
|
|
|
return batchIndex, startBlock, finishBlock, err
|
|
}
|