363 lines
11 KiB
Go
363 lines
11 KiB
Go
package keeper
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import (
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"context"
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"math/big"
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"github.com/pkg/errors"
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log "github.com/xlab/suplog"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/ethereum/go-ethereum/common"
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ethcmn "github.com/ethereum/go-ethereum/common"
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tmtypes "github.com/tendermint/tendermint/types"
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ethermint "github.com/cosmos/ethermint/types"
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"github.com/cosmos/ethermint/x/evm/types"
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)
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var _ types.MsgServer = &Keeper{}
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func (k *Keeper) EthereumTx(goCtx context.Context, msg *types.MsgEthereumTx) (*types.MsgEthereumTxResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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// parse the chainID from a string to a base-10 integer
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chainIDEpoch, err := ethermint.ParseChainID(ctx.ChainID())
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if err != nil {
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return nil, err
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}
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// Verify signature and retrieve sender address
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var homesteadErr error
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sender, eip155Err := msg.VerifySig(chainIDEpoch)
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if eip155Err != nil {
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sender, homesteadErr = msg.VerifySigHomestead()
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if homesteadErr != nil {
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log.WithFields(log.Fields{
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"eip155_err": eip155Err.Error(),
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"homestead_err": homesteadErr.Error(),
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}).Warningln("failed to verify signatures with EIP155 and Homestead signers")
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return nil, errors.New("no valid signatures")
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}
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}
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txHash := tmtypes.Tx(ctx.TxBytes()).Hash()
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ethHash := ethcmn.BytesToHash(txHash)
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var recipient *ethcmn.Address
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if len(msg.Data.Recipient) > 0 {
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addr := ethcmn.BytesToAddress(msg.Data.Recipient)
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recipient = &addr
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}
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st := &types.StateTransition{
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AccountNonce: msg.Data.AccountNonce,
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Price: new(big.Int).SetBytes(msg.Data.Price),
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GasLimit: msg.Data.GasLimit,
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Recipient: recipient,
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Amount: new(big.Int).SetBytes(msg.Data.Amount),
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Payload: msg.Data.Payload,
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Csdb: k.CommitStateDB.WithContext(ctx),
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ChainID: chainIDEpoch,
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TxHash: ðHash,
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Sender: sender,
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Simulate: ctx.IsCheckTx(),
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}
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// since the txCount is used by the stateDB, and a simulated tx is run only on the node it's submitted to,
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// then this will cause the txCount/stateDB of the node that ran the simulated tx to be different than the
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// other nodes, causing a consensus error
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if !st.Simulate {
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// Prepare db for logs
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hash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.Prepare(ctx, ethHash, ethcmn.BytesToHash(hash), k.TxCount)
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k.TxCount++
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}
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config, found := k.GetChainConfig(ctx)
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if !found {
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return nil, types.ErrChainConfigNotFound
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}
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executionResult, err := st.TransitionDb(ctx, config)
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if err != nil {
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if err.Error() == "execution reverted" && executionResult != nil {
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// keep the execution result for revert reason
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executionResult.Response.Reverted = true
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if !st.Simulate {
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blockHash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.SetTxReceiptToHash(ctx, ethHash, &types.TxReceipt{
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Hash: ethHash.Bytes(),
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From: sender.Bytes(),
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Data: msg.Data,
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BlockHeight: uint64(ctx.BlockHeight()),
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BlockHash: blockHash,
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Result: &types.TxResult{
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ContractAddress: executionResult.Response.ContractAddress,
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Bloom: executionResult.Response.Bloom,
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TxLogs: executionResult.Response.TxLogs,
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Ret: executionResult.Response.Ret,
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Reverted: executionResult.Response.Reverted,
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GasUsed: executionResult.GasInfo.GasConsumed,
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},
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})
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}
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return executionResult.Response, nil
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}
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return nil, err
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}
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if !st.Simulate {
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// update block bloom filter
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k.Bloom.Or(k.Bloom, executionResult.Bloom)
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// update transaction logs in KVStore
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err = k.SetLogs(ctx, ethHash, executionResult.Logs)
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if err != nil {
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panic(err)
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}
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blockHash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.SetTxReceiptToHash(ctx, ethHash, &types.TxReceipt{
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Hash: ethHash.Bytes(),
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From: sender.Bytes(),
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Data: msg.Data,
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Index: uint64(st.Csdb.TxIndex()),
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BlockHeight: uint64(ctx.BlockHeight()),
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BlockHash: blockHash,
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Result: &types.TxResult{
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ContractAddress: executionResult.Response.ContractAddress,
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Bloom: executionResult.Response.Bloom,
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TxLogs: executionResult.Response.TxLogs,
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Ret: executionResult.Response.Ret,
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Reverted: executionResult.Response.Reverted,
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GasUsed: executionResult.GasInfo.GasConsumed,
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},
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})
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k.AddTxHashToBlock(ctx, ctx.BlockHeight(), ethHash)
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for _, ethLog := range executionResult.Logs {
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k.LogsCache[ethLog.Address] = append(k.LogsCache[ethLog.Address], ethLog)
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}
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}
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// emit events
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeEthereumTx,
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sdk.NewAttribute(sdk.AttributeKeyAmount, st.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyTxHash, ethcmn.BytesToHash(txHash).Hex()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, sender.String()),
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),
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})
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if len(msg.Data.Recipient) > 0 {
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ethAddr := ethcmn.BytesToAddress(msg.Data.Recipient)
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeEthereumTx,
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sdk.NewAttribute(types.AttributeKeyRecipient, ethAddr.Hex()),
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),
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)
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}
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return executionResult.Response, nil
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}
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func (k *Keeper) SendInternalEthereumTx(
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ctx sdk.Context,
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payload []byte,
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senderAddress common.Address,
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recipientAddress common.Address,
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) (*types.MsgEthereumTxResponse, error) {
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accAddress := sdk.AccAddress(senderAddress.Bytes())
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acc := k.accountKeeper.GetAccount(ctx, accAddress)
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if acc == nil {
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acc = k.accountKeeper.NewAccountWithAddress(ctx, accAddress)
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k.accountKeeper.SetAccount(ctx, acc)
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}
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ethAccount, ok := acc.(*ethermint.EthAccount)
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if !ok {
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return nil, errors.New("could not cast account to EthAccount")
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}
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if err := ethAccount.SetSequence(ethAccount.GetSequence() + 1); err != nil {
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return nil, errors.New("failed to set acc sequence")
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}
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k.accountKeeper.SetAccount(ctx, ethAccount)
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res, err := k.InternalEthereumTx(sdk.WrapSDKContext(ctx), senderAddress, &types.TxData{
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AccountNonce: ethAccount.GetSequence(),
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Recipient: recipientAddress.Bytes(),
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Amount: big.NewInt(0).Bytes(),
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Price: big.NewInt(0).Bytes(),
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GasLimit: 10000000, // TODO: don't hardcode, maybe set a limit?
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Payload: payload,
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})
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if err != nil {
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err = errors.Wrapf(err, "failed to execute InternalEthereumTx at contract %s", recipientAddress.Hex())
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return nil, err
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}
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return res, nil
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}
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func (k *Keeper) InternalEthereumTx(
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goCtx context.Context,
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sender common.Address,
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tx *types.TxData,
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) (*types.MsgEthereumTxResponse, error) {
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ctx := sdk.UnwrapSDKContext(goCtx)
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// parse the chainID from a string to a base-10 integer
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chainIDEpoch, err := ethermint.ParseChainID(ctx.ChainID())
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if err != nil {
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return nil, err
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}
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// true Ethereum tx hash based on its data
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ethHash := (&types.MsgEthereumTx{
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Data: tx,
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}).RLPSignBytes(chainIDEpoch)
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var recipient *ethcmn.Address
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if len(tx.Recipient) > 0 {
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addr := ethcmn.BytesToAddress(tx.Recipient)
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recipient = &addr
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}
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st := &types.StateTransition{
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AccountNonce: tx.AccountNonce,
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Price: new(big.Int).SetBytes(tx.Price),
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GasLimit: tx.GasLimit,
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Recipient: recipient,
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Amount: new(big.Int).SetBytes(tx.Amount),
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Payload: tx.Payload,
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Csdb: k.CommitStateDB.WithContext(ctx),
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ChainID: chainIDEpoch,
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TxHash: ðHash,
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Sender: sender,
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Simulate: ctx.IsCheckTx(),
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}
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// since the txCount is used by the stateDB, and a simulated tx is run only on the node it's submitted to,
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// then this will cause the txCount/stateDB of the node that ran the simulated tx to be different than the
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// other nodes, causing a consensus error
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if !st.Simulate {
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// Prepare db for logs
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hash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.Prepare(ctx, ethHash, ethcmn.BytesToHash(hash), k.TxCount)
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k.TxCount++
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}
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config, found := k.GetChainConfig(ctx)
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if !found {
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return nil, types.ErrChainConfigNotFound
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}
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executionResult, err := st.TransitionDb(ctx, config)
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if err != nil {
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if err.Error() == "execution reverted" && executionResult != nil {
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// keep the execution result for revert reason
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executionResult.Response.Reverted = true
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if !st.Simulate {
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blockHash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.SetTxReceiptToHash(ctx, ethHash, &types.TxReceipt{
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Hash: ethHash.Bytes(),
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From: sender.Bytes(),
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Data: tx,
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BlockHeight: uint64(ctx.BlockHeight()),
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BlockHash: blockHash,
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Result: &types.TxResult{
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ContractAddress: executionResult.Response.ContractAddress,
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Bloom: executionResult.Response.Bloom,
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TxLogs: executionResult.Response.TxLogs,
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Ret: executionResult.Response.Ret,
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Reverted: executionResult.Response.Reverted,
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GasUsed: executionResult.GasInfo.GasConsumed,
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},
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})
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}
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return executionResult.Response, err
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}
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return nil, err
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}
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blockHash, _ := k.GetBlockHashFromHeight(ctx, ctx.BlockHeight())
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k.SetTxReceiptToHash(ctx, ethHash, &types.TxReceipt{
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Hash: ethHash.Bytes(),
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From: sender.Bytes(),
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Data: tx,
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Index: uint64(st.Csdb.TxIndex()),
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BlockHeight: uint64(ctx.BlockHeight()),
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BlockHash: blockHash,
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Result: &types.TxResult{
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ContractAddress: executionResult.Response.ContractAddress,
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Bloom: executionResult.Response.Bloom,
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TxLogs: executionResult.Response.TxLogs,
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Ret: executionResult.Response.Ret,
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Reverted: executionResult.Response.Reverted,
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GasUsed: executionResult.GasInfo.GasConsumed,
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},
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})
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k.AddTxHashToBlock(ctx, ctx.BlockHeight(), ethHash)
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if !st.Simulate {
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// update block bloom filter
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k.Bloom.Or(k.Bloom, executionResult.Bloom)
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// update transaction logs in KVStore
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err = k.SetLogs(ctx, ethHash, executionResult.Logs)
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if err != nil {
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panic(err)
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}
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for _, ethLog := range executionResult.Logs {
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k.LogsCache[ethLog.Address] = append(k.LogsCache[ethLog.Address], ethLog)
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}
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}
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// emit events
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeEthereumTx,
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sdk.NewAttribute(sdk.AttributeKeyAmount, st.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyTxHash, ethHash.Hex()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, sender.String()),
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),
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})
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if len(tx.Recipient) > 0 {
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ethAddr := ethcmn.BytesToAddress(tx.Recipient)
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeEthereumTx,
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sdk.NewAttribute(types.AttributeKeyRecipient, ethAddr.Hex()),
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),
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)
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}
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return executionResult.Response, nil
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}
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