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package eth
import (
"context"
"fmt"
"math/big"
"strings"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
ethCommon "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"
"github.com/hermeznetwork/hermez-node/common"
Hermez "github.com/hermeznetwork/hermez-node/eth/contracts/hermez"
HEZ "github.com/hermeznetwork/hermez-node/eth/contracts/tokenHEZ"
"github.com/hermeznetwork/hermez-node/log"
"github.com/iden3/go-iden3-crypto/babyjub"
)
// QueueStruct is the queue of L1Txs for a batch
type QueueStruct struct {
L1TxQueue []common.L1Tx
TotalL1TxFee *big.Int
}
// NewQueueStruct creates a new clear QueueStruct.
func NewQueueStruct() *QueueStruct {
return &QueueStruct{
L1TxQueue: make([]common.L1Tx, 0),
TotalL1TxFee: big.NewInt(0),
}
}
// RollupState represents the state of the Rollup in the Smart Contract
type RollupState struct {
StateRoot *big.Int
ExitRoots []*big.Int
// ExitNullifierMap map[[256 / 8]byte]bool
ExitNullifierMap map[int64]map[int64]bool // batchNum -> idx -> bool
TokenList []ethCommon.Address
TokenMap map[ethCommon.Address]bool
MapL1TxQueue map[int64]*QueueStruct
LastL1L2Batch int64
CurrentToForgeL1TxsNum int64
LastToForgeL1TxsNum int64
CurrentIdx int64
}
// RollupEventL1UserTx is an event of the Rollup Smart Contract
type RollupEventL1UserTx struct {
// ToForgeL1TxsNum int64 // QueueIndex *big.Int
// Position int // TransactionIndex *big.Int
L1UserTx common.L1Tx
}
// RollupEventL1UserTxAux is an event of the Rollup Smart Contract
type RollupEventL1UserTxAux struct {
ToForgeL1TxsNum uint64 // QueueIndex *big.Int
Position uint8 // TransactionIndex *big.Int
L1UserTx []byte
}
// RollupEventAddToken is an event of the Rollup Smart Contract
type RollupEventAddToken struct {
TokenAddress ethCommon.Address
TokenID uint32
}
// RollupEventForgeBatch is an event of the Rollup Smart Contract
type RollupEventForgeBatch struct {
BatchNum int64
// Sender ethCommon.Address
EthTxHash ethCommon.Hash
}
// RollupEventUpdateForgeL1L2BatchTimeout is an event of the Rollup Smart Contract
type RollupEventUpdateForgeL1L2BatchTimeout struct {
NewForgeL1L2BatchTimeout int64
}
// RollupEventUpdateFeeAddToken is an event of the Rollup Smart Contract
type RollupEventUpdateFeeAddToken struct {
NewFeeAddToken *big.Int
}
// RollupEventWithdraw is an event of the Rollup Smart Contract
type RollupEventWithdraw struct {
Idx uint64
NumExitRoot uint64
InstantWithdraw bool
TxHash ethCommon.Hash // Hash of the transaction that generated this event
}
// RollupEvents is the list of events in a block of the Rollup Smart Contract
type RollupEvents struct {
L1UserTx []RollupEventL1UserTx
AddToken []RollupEventAddToken
ForgeBatch []RollupEventForgeBatch
UpdateForgeL1L2BatchTimeout []RollupEventUpdateForgeL1L2BatchTimeout
UpdateFeeAddToken []RollupEventUpdateFeeAddToken
Withdraw []RollupEventWithdraw
}
// NewRollupEvents creates an empty RollupEvents with the slices initialized.
func NewRollupEvents() RollupEvents {
return RollupEvents{
L1UserTx: make([]RollupEventL1UserTx, 0),
AddToken: make([]RollupEventAddToken, 0),
ForgeBatch: make([]RollupEventForgeBatch, 0),
UpdateForgeL1L2BatchTimeout: make([]RollupEventUpdateForgeL1L2BatchTimeout, 0),
UpdateFeeAddToken: make([]RollupEventUpdateFeeAddToken, 0),
Withdraw: make([]RollupEventWithdraw, 0),
}
}
// RollupForgeBatchArgs are the arguments to the ForgeBatch function in the Rollup Smart Contract
type RollupForgeBatchArgs struct {
NewLastIdx int64
NewStRoot *big.Int
NewExitRoot *big.Int
L1CoordinatorTxs []common.L1Tx
L1CoordinatorTxsAuths [][]byte // Authorization for accountCreations for each L1CoordinatorTx
L2TxsData []common.L2Tx
FeeIdxCoordinator []common.Idx
// Circuit selector
VerifierIdx uint8
L1Batch bool
ProofA [2]*big.Int
ProofB [2][2]*big.Int
ProofC [2]*big.Int
}
// RollupForgeBatchArgsAux are the arguments to the ForgeBatch function in the Rollup Smart Contract
type RollupForgeBatchArgsAux struct {
NewLastIdx *big.Int
NewStRoot *big.Int
NewExitRoot *big.Int
EncodedL1CoordinatorTx []byte
L2TxsData []byte
FeeIdxCoordinator []byte
// Circuit selector
VerifierIdx uint8
L1Batch bool
ProofA [2]*big.Int
ProofB [2][2]*big.Int
ProofC [2]*big.Int
}
// RollupInterface is the inteface to to Rollup Smart Contract
type RollupInterface interface {
//
// Smart Contract Methods
//
// Public Functions
RollupForgeBatch(*RollupForgeBatchArgs) (*types.Transaction, error)
RollupAddToken(tokenAddress ethCommon.Address, feeAddToken, deadline *big.Int) (*types.Transaction, error)
RollupWithdrawMerkleProof(babyPubKey *babyjub.PublicKey, tokenID uint32, numExitRoot, idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (*types.Transaction, error)
RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error)
RollupL1UserTxERC20ETH(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (*types.Transaction, error)
RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64, deadline *big.Int) (tx *types.Transaction, err error)
// Governance Public Functions
RollupUpdateForgeL1L2BatchTimeout(newForgeL1L2BatchTimeout int64) (*types.Transaction, error)
RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (*types.Transaction, error)
// Viewers
RollupRegisterTokensCount() (*big.Int, error)
RollupLastForgedBatch() (int64, error)
//
// Smart Contract Status
//
RollupConstants() (*common.RollupConstants, error)
RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethCommon.Hash, error)
RollupForgeBatchArgs(ethCommon.Hash) (*RollupForgeBatchArgs, *ethCommon.Address, error)
}
//
// Implementation
//
// RollupClient is the implementation of the interface to the Rollup Smart Contract in ethereum.
type RollupClient struct {
client *EthereumClient
chainID *big.Int
address ethCommon.Address
tokenHEZCfg TokenConfig
hermez *Hermez.Hermez
tokenHEZ *HEZ.HEZ
contractAbi abi.ABI
}
// NewRollupClient creates a new RollupClient
func NewRollupClient(client *EthereumClient, address ethCommon.Address, tokenHEZCfg TokenConfig) (*RollupClient, error) {
contractAbi, err := abi.JSON(strings.NewReader(string(Hermez.HermezABI)))
if err != nil {
return nil, err
}
hermez, err := Hermez.NewHermez(address, client.Client())
if err != nil {
return nil, err
}
tokenHEZ, err := HEZ.NewHEZ(tokenHEZCfg.Address, client.Client())
if err != nil {
return nil, err
}
chainID, err := client.client.ChainID(context.Background())
if err != nil {
return nil, err
}
return &RollupClient{
client: client,
chainID: chainID,
address: address,
tokenHEZCfg: tokenHEZCfg,
hermez: hermez,
tokenHEZ: tokenHEZ,
contractAbi: contractAbi,
}, nil
}
// RollupForgeBatch is the interface to call the smart contract function
func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
1000000, //nolint:gomnd
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
rollupConst, err := c.RollupConstants()
if err != nil {
return nil, err
}
nLevels := rollupConst.Verifiers[args.VerifierIdx].NLevels
lenBytes := nLevels / 8 //nolint:gomnd
newLastIdx := big.NewInt(int64(args.NewLastIdx))
var l1CoordinatorBytes []byte
for i := 0; i < len(args.L1CoordinatorTxs); i++ {
l1 := args.L1CoordinatorTxs[i]
bytesl1, err := l1.BytesCoordinatorTx(args.L1CoordinatorTxsAuths[i])
if err != nil {
return nil, err
}
l1CoordinatorBytes = append(l1CoordinatorBytes, bytesl1[:]...)
}
var l2DataBytes []byte
for i := 0; i < len(args.L2TxsData); i++ {
l2 := args.L2TxsData[i]
bytesl2, err := l2.BytesDataAvailability(uint32(nLevels))
if err != nil {
return nil, err
}
l2DataBytes = append(l2DataBytes, bytesl2[:]...)
}
var feeIdxCoordinator []byte
if len(args.FeeIdxCoordinator) > common.RollupConstMaxFeeIdxCoordinator {
return nil, fmt.Errorf("len(args.FeeIdxCoordinator) > %v",
common.RollupConstMaxFeeIdxCoordinator)
}
for i := 0; i < common.RollupConstMaxFeeIdxCoordinator; i++ {
feeIdx := common.Idx(0)
if i < len(args.FeeIdxCoordinator) {
feeIdx = args.FeeIdxCoordinator[i]
}
bytesFeeIdx, err := feeIdx.Bytes()
if err != nil {
return nil, err
}
feeIdxCoordinator = append(feeIdxCoordinator, bytesFeeIdx[len(bytesFeeIdx)-int(lenBytes):]...)
}
return c.hermez.ForgeBatch(auth, newLastIdx, args.NewStRoot, args.NewExitRoot, l1CoordinatorBytes, l2DataBytes, feeIdxCoordinator, args.VerifierIdx, args.L1Batch, args.ProofA, args.ProofB, args.ProofC)
},
); err != nil {
return nil, fmt.Errorf("Failed forge batch: %w", err)
}
return tx, nil
}
// RollupAddToken is the interface to call the smart contract function.
// `feeAddToken` is the amount of HEZ tokens that will be paid to add the
// token. `feeAddToken` must match the public value of the smart contract.
func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToken, deadline *big.Int) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
owner := c.client.account.Address
spender := c.address
nonce, err := c.tokenHEZ.Nonces(nil, owner)
if err != nil {
return nil, err
}
tokenName := c.tokenHEZCfg.Name
tokenAddr := c.tokenHEZCfg.Address
digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, feeAddToken, nonce, deadline, tokenName)
signature, _ := c.client.ks.SignHash(*c.client.account, digest)
permit := createPermit(owner, spender, feeAddToken, deadline, digest, signature)
return c.hermez.AddToken(auth, tokenAddress, permit)
},
); err != nil {
return nil, fmt.Errorf("Failed add Token %w", err)
}
return tx, nil
}
// RollupWithdrawMerkleProof is the interface to call the smart contract function
func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ *babyjub.PublicKey, tokenID uint32, numExitRoot, idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
pkCompL := fromBJJ.Compress()
pkCompB := common.SwapEndianness(pkCompL[:])
babyPubKey := new(big.Int).SetBytes(pkCompB)
numExitRootB := big.NewInt(numExitRoot)
idxBig := big.NewInt(idx)
return c.hermez.WithdrawMerkleProof(auth, tokenID, amount, babyPubKey, numExitRootB, siblings, idxBig, instantWithdraw)
},
); err != nil {
return nil, fmt.Errorf("Failed update WithdrawMerkleProof: %w", err)
}
return tx, nil
}
// RollupWithdrawCircuit is the interface to call the smart contract function
func (c *RollupClient) RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error) {
log.Error("TODO")
return nil, errTODO
}
// RollupL1UserTxERC20ETH is the interface to call the smart contract function
func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
pkCompL := fromBJJ.Compress()
pkCompB := common.SwapEndianness(pkCompL[:])
babyPubKey := new(big.Int).SetBytes(pkCompB)
fromIdxBig := big.NewInt(fromIdx)
toIdxBig := big.NewInt(toIdx)
loadAmountF, err := common.NewFloat16(loadAmount)
if err != nil {
return nil, err
}
amountF, err := common.NewFloat16(amount)
if err != nil {
return nil, err
}
if tokenID == 0 {
auth.Value = loadAmount
}
var permit []byte
return c.hermez.AddL1Transaction(auth, babyPubKey, fromIdxBig, uint16(loadAmountF),
uint16(amountF), tokenID, toIdxBig, permit)
},
); err != nil {
return nil, fmt.Errorf("Failed add L1 Tx ERC20/ETH: %w", err)
}
return tx, nil
}
// RollupL1UserTxERC20Permit is the interface to call the smart contract function
func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64, deadline *big.Int) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
pkCompL := fromBJJ.Compress()
pkCompB := common.SwapEndianness(pkCompL[:])
babyPubKey := new(big.Int).SetBytes(pkCompB)
fromIdxBig := big.NewInt(fromIdx)
toIdxBig := big.NewInt(toIdx)
loadAmountF, err := common.NewFloat16(loadAmount)
if err != nil {
return nil, err
}
amountF, err := common.NewFloat16(amount)
if err != nil {
return nil, err
}
if tokenID == 0 {
auth.Value = loadAmount
}
owner := c.client.account.Address
spender := c.address
nonce, err := c.tokenHEZ.Nonces(nil, owner)
if err != nil {
return nil, err
}
tokenName := c.tokenHEZCfg.Name
tokenAddr := c.tokenHEZCfg.Address
digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, amount, nonce, deadline, tokenName)
signature, _ := c.client.ks.SignHash(*c.client.account, digest)
permit := createPermit(owner, spender, amount, deadline, digest, signature)
return c.hermez.AddL1Transaction(auth, babyPubKey, fromIdxBig, uint16(loadAmountF),
uint16(amountF), tokenID, toIdxBig, permit)
},
); err != nil {
return nil, fmt.Errorf("Failed add L1 Tx ERC20Permit: %w", err)
}
return tx, nil
}
// RollupRegisterTokensCount is the interface to call the smart contract function
func (c *RollupClient) RollupRegisterTokensCount() (registerTokensCount *big.Int, err error) {
if err := c.client.Call(func(ec *ethclient.Client) error {
registerTokensCount, err = c.hermez.RegisterTokensCount(nil)
return err
}); err != nil {
return nil, err
}
return registerTokensCount, nil
}
// RollupLastForgedBatch is the interface to call the smart contract function
func (c *RollupClient) RollupLastForgedBatch() (lastForgedBatch int64, err error) {
if err := c.client.Call(func(ec *ethclient.Client) error {
_lastForgedBatch, err := c.hermez.LastForgedBatch(nil)
lastForgedBatch = int64(_lastForgedBatch)
return err
}); err != nil {
return 0, err
}
return lastForgedBatch, nil
}
// RollupUpdateForgeL1L2BatchTimeout is the interface to call the smart contract function
func (c *RollupClient) RollupUpdateForgeL1L2BatchTimeout(newForgeL1L2BatchTimeout int64) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
return c.hermez.UpdateForgeL1L2BatchTimeout(auth, uint8(newForgeL1L2BatchTimeout))
},
); err != nil {
return nil, fmt.Errorf("Failed update ForgeL1L2BatchTimeout: %w", err)
}
return tx, nil
}
// RollupUpdateFeeAddToken is the interface to call the smart contract function
func (c *RollupClient) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (tx *types.Transaction, err error) {
if tx, err = c.client.CallAuth(
0,
func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
return c.hermez.UpdateFeeAddToken(auth, newFeeAddToken)
},
); err != nil {
return nil, fmt.Errorf("Failed update FeeAddToken: %w", err)
}
return tx, nil
}
// RollupConstants returns the Constants of the Rollup Smart Contract
func (c *RollupClient) RollupConstants() (rollupConstants *common.RollupConstants, err error) {
rollupConstants = new(common.RollupConstants)
if err := c.client.Call(func(ec *ethclient.Client) error {
absoluteMaxL1L2BatchTimeout, err := c.hermez.ABSOLUTEMAXL1L2BATCHTIMEOUT(nil)
if err != nil {
return err
}
rollupConstants.AbsoluteMaxL1L2BatchTimeout = int64(absoluteMaxL1L2BatchTimeout)
rollupConstants.TokenHEZ, err = c.hermez.TokenHEZ(nil)
if err != nil {
return err
}
for i := int64(0); i < int64(common.LenVerifiers); i++ {
var newRollupVerifier common.RollupVerifierStruct
rollupVerifier, err := c.hermez.RollupVerifiers(nil, big.NewInt(i))
if err != nil {
return err
}
newRollupVerifier.MaxTx = rollupVerifier.MaxTx.Int64()
newRollupVerifier.NLevels = rollupVerifier.NLevels.Int64()
rollupConstants.Verifiers = append(rollupConstants.Verifiers, newRollupVerifier)
}
rollupConstants.HermezAuctionContract, err = c.hermez.HermezAuctionContract(nil)
if err != nil {
return err
}
rollupConstants.HermezGovernanceDAOAddress, err = c.hermez.HermezGovernanceDAOAddress(nil)
if err != nil {
return err
}
rollupConstants.SafetyAddress, err = c.hermez.SafetyAddress(nil)
if err != nil {
return err
}
rollupConstants.WithdrawDelayerContract, err = c.hermez.WithdrawDelayerContract(nil)
return err
}); err != nil {
return nil, err
}
return rollupConstants, nil
}
var (
logHermezL1UserTxEvent = crypto.Keccak256Hash([]byte("L1UserTxEvent(uint64,uint8,bytes)"))
logHermezAddToken = crypto.Keccak256Hash([]byte("AddToken(address,uint32)"))
logHermezForgeBatch = crypto.Keccak256Hash([]byte("ForgeBatch(uint64)"))
logHermezUpdateForgeL1L2BatchTimeout = crypto.Keccak256Hash([]byte("UpdateForgeL1L2BatchTimeout(uint8)"))
logHermezUpdateFeeAddToken = crypto.Keccak256Hash([]byte("UpdateFeeAddToken(uint256)"))
logHermezWithdrawEvent = crypto.Keccak256Hash([]byte("WithdrawEvent(uint48,uint48,bool)"))
)
// RollupEventsByBlock returns the events in a block that happened in the Rollup Smart Contract
func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethCommon.Hash, error) {
var rollupEvents RollupEvents
var blockHash *ethCommon.Hash
query := ethereum.FilterQuery{
FromBlock: big.NewInt(blockNum),
ToBlock: big.NewInt(blockNum),
Addresses: []ethCommon.Address{
c.address,
},
BlockHash: nil,
Topics: [][]ethCommon.Hash{},
}
logs, err := c.client.client.FilterLogs(context.Background(), query)
if err != nil {
return nil, nil, err
}
if len(logs) > 0 {
blockHash = &logs[0].BlockHash
}
for _, vLog := range logs {
if vLog.BlockHash != *blockHash {
log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got", vLog.BlockHash.String())
return nil, nil, ErrBlockHashMismatchEvent
}
switch vLog.Topics[0] {
case logHermezL1UserTxEvent:
var L1UserTxAux RollupEventL1UserTxAux
var L1UserTx RollupEventL1UserTx
err := c.contractAbi.Unpack(&L1UserTxAux, "L1UserTxEvent", vLog.Data)
if err != nil {
return nil, nil, err
}
L1Tx, err := common.L1UserTxFromBytes(L1UserTxAux.L1UserTx)
if err != nil {
return nil, nil, err
}
toForgeL1TxsNum := new(big.Int).SetBytes(vLog.Topics[1][:]).Int64()
L1Tx.ToForgeL1TxsNum = &toForgeL1TxsNum
L1Tx.Position = int(new(big.Int).SetBytes(vLog.Topics[2][:]).Int64())
L1Tx.UserOrigin = true
L1UserTx.L1UserTx = *L1Tx
rollupEvents.L1UserTx = append(rollupEvents.L1UserTx, L1UserTx)
case logHermezAddToken:
var addToken RollupEventAddToken
err := c.contractAbi.Unpack(&addToken, "AddToken", vLog.Data)
if err != nil {
return nil, nil, err
}
addToken.TokenAddress = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
rollupEvents.AddToken = append(rollupEvents.AddToken, addToken)
case logHermezForgeBatch:
var forgeBatch RollupEventForgeBatch
forgeBatch.BatchNum = new(big.Int).SetBytes(vLog.Topics[1][:]).Int64()
forgeBatch.EthTxHash = vLog.TxHash
// forgeBatch.Sender = vLog.Address
rollupEvents.ForgeBatch = append(rollupEvents.ForgeBatch, forgeBatch)
case logHermezUpdateForgeL1L2BatchTimeout:
var updateForgeL1L2BatchTimeout struct {
NewForgeL1L2BatchTimeout uint8
}
err := c.contractAbi.Unpack(&updateForgeL1L2BatchTimeout, "UpdateForgeL1L2BatchTimeout", vLog.Data)
if err != nil {
return nil, nil, err
}
rollupEvents.UpdateForgeL1L2BatchTimeout = append(rollupEvents.UpdateForgeL1L2BatchTimeout,
RollupEventUpdateForgeL1L2BatchTimeout{
NewForgeL1L2BatchTimeout: int64(updateForgeL1L2BatchTimeout.NewForgeL1L2BatchTimeout),
})
case logHermezUpdateFeeAddToken:
var updateFeeAddToken RollupEventUpdateFeeAddToken
err := c.contractAbi.Unpack(&updateFeeAddToken, "UpdateFeeAddToken", vLog.Data)
if err != nil {
return nil, nil, err
}
rollupEvents.UpdateFeeAddToken = append(rollupEvents.UpdateFeeAddToken, updateFeeAddToken)
case logHermezWithdrawEvent:
var withdraw RollupEventWithdraw
withdraw.Idx = new(big.Int).SetBytes(vLog.Topics[1][:]).Uint64()
withdraw.NumExitRoot = new(big.Int).SetBytes(vLog.Topics[2][:]).Uint64()
instantWithdraw := new(big.Int).SetBytes(vLog.Topics[3][:]).Uint64()
if instantWithdraw == 1 {
withdraw.InstantWithdraw = true
}
withdraw.TxHash = vLog.TxHash
rollupEvents.Withdraw = append(rollupEvents.Withdraw, withdraw)
}
}
return &rollupEvents, blockHash, nil
}
// RollupForgeBatchArgs returns the arguments used in a ForgeBatch call in the
// Rollup Smart Contract in the given transaction, and the sender address.
func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*RollupForgeBatchArgs, *ethCommon.Address, error) {
tx, _, err := c.client.client.TransactionByHash(context.Background(), ethTxHash)
if err != nil {
return nil, nil, err
}
txData := tx.Data()
method, err := c.contractAbi.MethodById(txData[:4])
if err != nil {
return nil, nil, err
}
receipt, err := c.client.client.TransactionReceipt(context.Background(), ethTxHash)
if err != nil {
return nil, nil, err
}
sender, err := c.client.client.TransactionSender(context.Background(), tx, receipt.Logs[0].BlockHash, receipt.Logs[0].Index)
if err != nil {
return nil, nil, err
}
var aux RollupForgeBatchArgsAux
if err := method.Inputs.Unpack(&aux, txData[4:]); err != nil {
return nil, nil, err
}
rollupForgeBatchArgs := RollupForgeBatchArgs{
L1Batch: aux.L1Batch,
NewExitRoot: aux.NewExitRoot,
NewLastIdx: aux.NewLastIdx.Int64(),
NewStRoot: aux.NewStRoot,
ProofA: aux.ProofA,
ProofB: aux.ProofB,
ProofC: aux.ProofC,
VerifierIdx: aux.VerifierIdx,
L1CoordinatorTxs: []common.L1Tx{},
L1CoordinatorTxsAuths: [][]byte{},
L2TxsData: []common.L2Tx{},
FeeIdxCoordinator: []common.Idx{},
}
numTxsL1 := len(aux.EncodedL1CoordinatorTx) / common.L1CoordinatorTxBytesLen
for i := 0; i < numTxsL1; i++ {
bytesL1Coordinator := aux.EncodedL1CoordinatorTx[i*common.L1CoordinatorTxBytesLen : (i+1)*common.L1CoordinatorTxBytesLen]
var signature []byte
v := bytesL1Coordinator[0]
s := bytesL1Coordinator[1:33]
r := bytesL1Coordinator[33:65]
signature = append(signature, r[:]...)
signature = append(signature, s[:]...)
signature = append(signature, v)
l1Tx, err := common.L1CoordinatorTxFromBytes(bytesL1Coordinator, c.chainID, c.address)
if err != nil {
return nil, nil, err
}
rollupForgeBatchArgs.L1CoordinatorTxs = append(rollupForgeBatchArgs.L1CoordinatorTxs, *l1Tx)
rollupForgeBatchArgs.L1CoordinatorTxsAuths = append(rollupForgeBatchArgs.L1CoordinatorTxsAuths, signature)
}
rollupConsts, err := c.RollupConstants()
if err != nil {
return nil, nil, err
}
nLevels := rollupConsts.Verifiers[rollupForgeBatchArgs.VerifierIdx].NLevels
lenL2TxsBytes := int((nLevels/8)*2 + 2 + 1)
numTxsL2 := len(aux.L2TxsData) / lenL2TxsBytes
for i := 0; i < numTxsL2; i++ {
l2Tx, err := common.L2TxFromBytes(aux.L2TxsData[i*lenL2TxsBytes:(i+1)*lenL2TxsBytes], int(nLevels))
if err != nil {
return nil, nil, err
}
rollupForgeBatchArgs.L2TxsData = append(rollupForgeBatchArgs.L2TxsData, *l2Tx)
}
lenFeeIdxCoordinatorBytes := int(nLevels / 8) //nolint:gomnd
numFeeIdxCoordinator := len(aux.FeeIdxCoordinator) / lenFeeIdxCoordinatorBytes
for i := 0; i < numFeeIdxCoordinator; i++ {
var paddedFeeIdx [6]byte
// TODO: This check is not necessary: the first case will always work. Test it before removing the if.
if lenFeeIdxCoordinatorBytes < common.IdxBytesLen {
copy(paddedFeeIdx[6-lenFeeIdxCoordinatorBytes:], aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
} else {
copy(paddedFeeIdx[:], aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
}
feeIdxCoordinator, err := common.IdxFromBytes(paddedFeeIdx[:])
if err != nil {
return nil, nil, err
}
if feeIdxCoordinator != common.Idx(0) {
rollupForgeBatchArgs.FeeIdxCoordinator = append(rollupForgeBatchArgs.FeeIdxCoordinator, feeIdxCoordinator)
}
}
return &rollupForgeBatchArgs, &sender, nil
}