laconicd/ethereum/rpc/eth_api.go
Federico Kunze bb91d8d93d
ante, evm: fix panic when checking BlockGasMeter (#120)
* ante, evm: fix panic when checking BlockGasMeter

* update block gas limit function
2021-06-14 10:24:08 -04:00

1031 lines
32 KiB
Go

package rpc
import (
"bytes"
"context"
"fmt"
"math/big"
"strings"
"github.com/gogo/protobuf/jsonpb"
"github.com/pkg/errors"
"github.com/spf13/viper"
log "github.com/xlab/suplog"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/flags"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
"github.com/cosmos/cosmos-sdk/crypto/keyring"
sdk "github.com/cosmos/cosmos-sdk/types"
authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
abci "github.com/tendermint/tendermint/abci/types"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
ethtypes "github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/cosmos/ethermint/crypto/hd"
rpctypes "github.com/cosmos/ethermint/ethereum/rpc/types"
ethermint "github.com/cosmos/ethermint/types"
evmtypes "github.com/cosmos/ethermint/x/evm/types"
)
// PublicEthAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec.
type PublicEthAPI struct {
ctx context.Context
clientCtx client.Context
queryClient *rpctypes.QueryClient
chainIDEpoch *big.Int
logger log.Logger
backend Backend
nonceLock *rpctypes.AddrLocker
}
// NewPublicEthAPI creates an instance of the public ETH Web3 API.
func NewPublicEthAPI(
clientCtx client.Context,
backend Backend,
nonceLock *rpctypes.AddrLocker,
) *PublicEthAPI {
epoch, err := ethermint.ParseChainID(clientCtx.ChainID)
if err != nil {
panic(err)
}
algos, _ := clientCtx.Keyring.SupportedAlgorithms()
if !algos.Contains(hd.EthSecp256k1) {
kr, err := keyring.New(
sdk.KeyringServiceName(),
viper.GetString(flags.FlagKeyringBackend),
clientCtx.KeyringDir,
clientCtx.Input,
hd.EthSecp256k1Option(),
)
if err != nil {
panic(err)
}
clientCtx = clientCtx.WithKeyring(kr)
}
api := &PublicEthAPI{
ctx: context.Background(),
clientCtx: clientCtx,
queryClient: rpctypes.NewQueryClient(clientCtx),
chainIDEpoch: epoch,
logger: log.WithField("module", "json-rpc"),
backend: backend,
nonceLock: nonceLock,
}
return api
}
// ClientCtx returns client context
func (e *PublicEthAPI) ClientCtx() client.Context {
return e.clientCtx
}
// ProtocolVersion returns the supported Ethereum protocol version.
func (e *PublicEthAPI) ProtocolVersion() hexutil.Uint {
e.logger.Debugln("eth_protocolVersion")
return hexutil.Uint(ethermint.ProtocolVersion)
}
// ChainId returns the chain's identifier in hex format
func (e *PublicEthAPI) ChainId() (hexutil.Uint, error) { // nolint
e.logger.Debugln("eth_chainId")
return hexutil.Uint(uint(e.chainIDEpoch.Uint64())), nil
}
// Syncing returns whether or not the current node is syncing with other peers. Returns false if not, or a struct
// outlining the state of the sync if it is.
func (e *PublicEthAPI) Syncing() (interface{}, error) {
e.logger.Debugln("eth_syncing")
status, err := e.clientCtx.Client.Status(e.ctx)
if err != nil {
return false, err
}
if !status.SyncInfo.CatchingUp {
return false, nil
}
return map[string]interface{}{
// "startingBlock": nil, // NA
"currentBlock": hexutil.Uint64(status.SyncInfo.LatestBlockHeight),
// "highestBlock": nil, // NA
// "pulledStates": nil, // NA
// "knownStates": nil, // NA
}, nil
}
// Coinbase is the address that staking rewards will be send to (alias for Etherbase).
func (e *PublicEthAPI) Coinbase() (common.Address, error) {
e.logger.Debugln("eth_coinbase")
node, err := e.clientCtx.GetNode()
if err != nil {
return common.Address{}, err
}
status, err := node.Status(e.ctx)
if err != nil {
return common.Address{}, err
}
return common.BytesToAddress(status.ValidatorInfo.Address.Bytes()), nil
}
// Mining returns whether or not this node is currently mining. Always false.
func (e *PublicEthAPI) Mining() bool {
e.logger.Debugln("eth_mining")
return false
}
// Hashrate returns the current node's hashrate. Always 0.
func (e *PublicEthAPI) Hashrate() hexutil.Uint64 {
e.logger.Debugln("eth_hashrate")
return 0
}
// GasPrice returns the current gas price based on Ethermint's gas price oracle.
func (e *PublicEthAPI) GasPrice() *hexutil.Big {
e.logger.Debugln("eth_gasPrice")
out := big.NewInt(0)
return (*hexutil.Big)(out)
}
// Accounts returns the list of accounts available to this node.
func (e *PublicEthAPI) Accounts() ([]common.Address, error) {
e.logger.Debugln("eth_accounts")
addresses := make([]common.Address, 0) // return [] instead of nil if empty
infos, err := e.clientCtx.Keyring.List()
if err != nil {
return addresses, err
}
for _, info := range infos {
addressBytes := info.GetPubKey().Address().Bytes()
addresses = append(addresses, common.BytesToAddress(addressBytes))
}
return addresses, nil
}
// BlockNumber returns the current block number.
func (e *PublicEthAPI) BlockNumber() (hexutil.Uint64, error) {
//e.logger.Debugln("eth_blockNumber")
return e.backend.BlockNumber()
}
// GetBalance returns the provided account's balance up to the provided block number.
func (e *PublicEthAPI) GetBalance(address common.Address, blockNum rpctypes.BlockNumber) (*hexutil.Big, error) { // nolint: interfacer
e.logger.Debugln("eth_getBalance", "address", address.String(), "block number", blockNum)
req := &evmtypes.QueryBalanceRequest{
Address: address.String(),
}
res, err := e.queryClient.Balance(rpctypes.ContextWithHeight(blockNum.Int64()), req)
if err != nil {
return nil, err
}
val, err := ethermint.UnmarshalBigInt(res.Balance)
if err != nil {
return nil, err
}
return (*hexutil.Big)(val), nil
}
// GetStorageAt returns the contract storage at the given address, block number, and key.
func (e *PublicEthAPI) GetStorageAt(address common.Address, key string, blockNum rpctypes.BlockNumber) (hexutil.Bytes, error) { // nolint: interfacer
e.logger.Debugln("eth_getStorageAt", "address", address.Hex(), "key", key, "block number", blockNum)
req := &evmtypes.QueryStorageRequest{
Address: address.String(),
Key: key,
}
res, err := e.queryClient.Storage(rpctypes.ContextWithHeight(blockNum.Int64()), req)
if err != nil {
return nil, err
}
value := common.HexToHash(res.Value)
return value.Bytes(), nil
}
// GetTransactionCount returns the number of transactions at the given address up to the given block number.
func (e *PublicEthAPI) GetTransactionCount(address common.Address, blockNum rpctypes.BlockNumber) (*hexutil.Uint64, error) {
e.logger.Debugln("eth_getTransactionCount", "address", address.Hex(), "block number", blockNum)
// Get nonce (sequence) from account
from := sdk.AccAddress(address.Bytes())
accRet := e.clientCtx.AccountRetriever
err := accRet.EnsureExists(e.clientCtx, from)
if err != nil {
// account doesn't exist yet, return 0
n := hexutil.Uint64(0)
return &n, nil
}
_, nonce, err := accRet.GetAccountNumberSequence(e.clientCtx, from)
if err != nil {
return nil, err
}
n := hexutil.Uint64(nonce)
return &n, nil
}
// GetBlockTransactionCountByHash returns the number of transactions in the block identified by hash.
func (e *PublicEthAPI) GetBlockTransactionCountByHash(hash common.Hash) *hexutil.Uint {
e.logger.Debugln("eth_getBlockTransactionCountByHash", "hash", hash.Hex())
resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
if err != nil {
return nil
}
n := hexutil.Uint(len(resBlock.Block.Txs))
return &n
}
// GetBlockTransactionCountByNumber returns the number of transactions in the block identified by number.
func (e *PublicEthAPI) GetBlockTransactionCountByNumber(blockNum rpctypes.BlockNumber) *hexutil.Uint {
e.logger.Debugln("eth_getBlockTransactionCountByNumber", "block number", blockNum)
resBlock, err := e.clientCtx.Client.Block(e.ctx, blockNum.TmHeight())
if err != nil {
return nil
}
n := hexutil.Uint(len(resBlock.Block.Txs))
return &n
}
// GetUncleCountByBlockHash returns the number of uncles in the block identified by hash. Always zero.
func (e *PublicEthAPI) GetUncleCountByBlockHash(hash common.Hash) hexutil.Uint {
return 0
}
// GetUncleCountByBlockNumber returns the number of uncles in the block identified by number. Always zero.
func (e *PublicEthAPI) GetUncleCountByBlockNumber(blockNum rpctypes.BlockNumber) hexutil.Uint {
return 0
}
// GetCode returns the contract code at the given address and block number.
func (e *PublicEthAPI) GetCode(address common.Address, blockNumber rpctypes.BlockNumber) (hexutil.Bytes, error) { // nolint: interfacer
e.logger.Debugln("eth_getCode", "address", address.Hex(), "block number", blockNumber)
req := &evmtypes.QueryCodeRequest{
Address: address.String(),
}
res, err := e.queryClient.Code(rpctypes.ContextWithHeight(blockNumber.Int64()), req)
if err != nil {
return nil, err
}
return res.Code, nil
}
// GetTransactionLogs returns the logs given a transaction hash.
func (e *PublicEthAPI) GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error) {
e.logger.Debugln("eth_getTransactionLogs", "hash", txHash)
return e.backend.GetTransactionLogs(txHash)
}
// Sign signs the provided data using the private key of address via Geth's signature standard.
func (e *PublicEthAPI) Sign(address common.Address, data hexutil.Bytes) (hexutil.Bytes, error) {
e.logger.Debugln("eth_sign", "address", address.Hex(), "data", common.Bytes2Hex(data))
from := sdk.AccAddress(address.Bytes())
_, err := e.clientCtx.Keyring.KeyByAddress(from)
if err != nil {
e.logger.Errorln("failed to find key in keyring", "address", address.String())
return nil, fmt.Errorf("%s; %s", keystore.ErrNoMatch, err.Error())
}
// Sign the requested hash with the wallet
signature, _, err := e.clientCtx.Keyring.SignByAddress(from, data)
if err != nil {
e.logger.Panicln("keyring.SignByAddress failed")
return nil, err
}
signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
return signature, nil
}
// SendTransaction sends an Ethereum transaction.
func (e *PublicEthAPI) SendTransaction(args rpctypes.SendTxArgs) (common.Hash, error) {
e.logger.Debugln("eth_sendTransaction", "args", args)
// Look up the wallet containing the requested signer
_, err := e.clientCtx.Keyring.KeyByAddress(sdk.AccAddress(args.From.Bytes()))
if err != nil {
e.logger.WithError(err).Errorln("failed to find key in keyring", "address", args.From)
return common.Hash{}, fmt.Errorf("%s; %s", keystore.ErrNoMatch, err.Error())
}
args, err = e.setTxDefaults(args)
if err != nil {
return common.Hash{}, err
}
tx := args.ToTransaction()
// Assemble transaction from fields
builder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
if !ok {
e.logger.WithError(err).Panicln("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
}
option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
if err != nil {
e.logger.WithError(err).Panicln("codectypes.NewAnyWithValue failed to pack an obvious value")
return common.Hash{}, err
}
builder.SetExtensionOptions(option)
err = builder.SetMsgs(tx.GetMsgs()...)
if err != nil {
e.logger.WithError(err).Panicln("builder.SetMsgs failed")
}
fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(tx.Fee())))
builder.SetFeeAmount(fees)
builder.SetGasLimit(tx.GetGas())
if err := tx.ValidateBasic(); err != nil {
e.logger.Debugln("tx failed basic validation", "error", err)
return common.Hash{}, err
}
// creates a new EIP2929 signer
// TODO: support legacy txs
signer := ethtypes.LatestSignerForChainID(args.ChainID.ToInt())
// Sign transaction
if err := tx.Sign(signer, e.clientCtx.Keyring); err != nil {
e.logger.Debugln("failed to sign tx", "error", err)
return common.Hash{}, err
}
// Encode transaction by default Tx encoder
txEncoder := e.clientCtx.TxConfig.TxEncoder()
txBytes, err := txEncoder(tx)
if err != nil {
e.logger.WithError(err).Errorln("failed to encode eth tx using default encoder")
return common.Hash{}, err
}
// TODO: use msg.AsTransaction.Hash() for txHash once hashing is fixed on Tendermint
// https://github.com/tendermint/tendermint/issues/6539
tmTx := tmtypes.Tx(txBytes)
txHash := common.BytesToHash(tmTx.Hash())
// Broadcast transaction in sync mode (default)
// NOTE: If error is encountered on the node, the broadcast will not return an error
asyncCtx := e.clientCtx.WithBroadcastMode(flags.BroadcastAsync)
if _, err := asyncCtx.BroadcastTx(txBytes); err != nil {
e.logger.WithError(err).Errorln("failed to broadcast Eth tx")
return txHash, err
}
// Return transaction hash
return txHash, nil
}
// SendRawTransaction send a raw Ethereum transaction.
func (e *PublicEthAPI) SendRawTransaction(data hexutil.Bytes) (common.Hash, error) {
e.logger.Debugln("eth_sendRawTransaction", "data_len", len(data))
// RLP decode raw transaction bytes
tx, err := e.clientCtx.TxConfig.TxDecoder()(data)
if err != nil {
e.logger.WithError(err).Errorln("transaction decoding failed")
return common.Hash{}, err
}
ethereumTx, isEthTx := tx.(*evmtypes.MsgEthereumTx)
if !isEthTx {
e.logger.Debugln("invalid transaction type", "type", fmt.Sprintf("%T", tx))
return common.Hash{}, fmt.Errorf("invalid transaction type %T", tx)
}
builder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
if !ok {
e.logger.Panicln("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
}
option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
if err != nil {
e.logger.WithError(err).Panicln("codectypes.NewAnyWithValue failed to pack an obvious value")
}
builder.SetExtensionOptions(option)
err = builder.SetMsgs(tx.GetMsgs()...)
if err != nil {
e.logger.WithError(err).Panicln("builder.SetMsgs failed")
}
fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(ethereumTx.Fee())))
builder.SetFeeAmount(fees)
builder.SetGasLimit(ethereumTx.GetGas())
// Encode transaction by default Tx encoder
txBytes, err := e.clientCtx.TxConfig.TxEncoder()(builder.GetTx())
if err != nil {
e.logger.WithError(err).Errorln("failed to encode eth tx using default encoder")
return common.Hash{}, err
}
// TODO: use msg.AsTransaction.Hash() for txHash once hashing is fixed on Tendermint
// https://github.com/tendermint/tendermint/issues/6539
tmTx := tmtypes.Tx(txBytes)
txHash := common.BytesToHash(tmTx.Hash())
asyncCtx := e.clientCtx.WithBroadcastMode(flags.BroadcastAsync)
if _, err := asyncCtx.BroadcastTx(txBytes); err != nil {
e.logger.WithError(err).Errorln("failed to broadcast eth tx")
return txHash, err
}
return txHash, nil
}
// Call performs a raw contract call.
func (e *PublicEthAPI) Call(args rpctypes.CallArgs, blockNr rpctypes.BlockNumber, _ *rpctypes.StateOverride) (hexutil.Bytes, error) {
e.logger.Debugln("eth_call", "args", args, "block number", blockNr)
simRes, err := e.doCall(args, blockNr, big.NewInt(ethermint.DefaultRPCGasLimit))
if err != nil {
return []byte{}, err
}
data, err := evmtypes.DecodeTxResponse(simRes.Result.Data)
if err != nil {
e.logger.WithError(err).Warningln("call result decoding failed")
return []byte{}, err
}
if data.Reverted {
return []byte{}, rpctypes.ErrRevertedWith(data.Ret)
}
return (hexutil.Bytes)(data.Ret), nil
}
// DoCall performs a simulated call operation through the evmtypes. It returns the
// estimated gas used on the operation or an error if fails.
func (e *PublicEthAPI) doCall(
args rpctypes.CallArgs, blockNr rpctypes.BlockNumber, globalGasCap *big.Int,
) (*sdk.SimulationResponse, error) {
// Set default gas & gas price if none were set
// Change this to uint64(math.MaxUint64 / 2) if gas cap can be configured
gas := uint64(ethermint.DefaultRPCGasLimit)
if args.Gas != nil {
gas = uint64(*args.Gas)
}
if globalGasCap != nil && globalGasCap.Uint64() < gas {
e.logger.Debugln("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap)
gas = globalGasCap.Uint64()
}
// Set gas price using default or parameter if passed in
gasPrice := new(big.Int).SetUint64(ethermint.DefaultGasPrice)
if args.GasPrice != nil {
gasPrice = args.GasPrice.ToInt()
}
// Set value for transaction
value := new(big.Int)
if args.Value != nil {
value = args.Value.ToInt()
}
// Set Data if provided
var data []byte
if args.Data != nil {
data = []byte(*args.Data)
}
var accessList *ethtypes.AccessList
if args.AccessList != nil {
accessList = args.AccessList
}
// Set destination address for call
var fromAddr sdk.AccAddress
if args.From != nil {
fromAddr = sdk.AccAddress(args.From.Bytes())
} else {
fromAddr = sdk.AccAddress(common.Address{}.Bytes())
args.From = &common.Address{}
}
_, seq, err := e.clientCtx.AccountRetriever.GetAccountNumberSequence(e.clientCtx, fromAddr)
if err != nil {
return nil, err
}
// Create new call message
msg := evmtypes.NewMsgEthereumTx(e.chainIDEpoch, seq, args.To, value, gas, gasPrice, data, accessList)
msg.From = args.From.String()
if err := msg.ValidateBasic(); err != nil {
return nil, err
}
// Create a TxBuilder
txBuilder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
if !ok {
log.Panicln("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
}
option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
if err != nil {
log.Panicln("codectypes.NewAnyWithValue failed to pack an obvious value")
}
txBuilder.SetExtensionOptions(option)
if err := txBuilder.SetMsgs(msg); err != nil {
log.Panicln("builder.SetMsgs failed")
}
fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(msg.Fee())))
txBuilder.SetFeeAmount(fees)
txBuilder.SetGasLimit(gas)
// doc about generate and transform tx into json, protobuf bytes
// https://github.com/cosmos/cosmos-sdk/blob/master/docs/run-node/txs.md
txBytes, err := e.clientCtx.TxConfig.TxEncoder()(txBuilder.GetTx())
if err != nil {
return nil, err
}
// simulate by calling ABCI Query
query := abci.RequestQuery{
Path: "/app/simulate",
Data: txBytes,
Height: blockNr.Int64(),
}
queryResult, err := e.clientCtx.QueryABCI(query)
if err != nil {
return nil, err
}
var simResponse sdk.SimulationResponse
err = jsonpb.Unmarshal(strings.NewReader(string(queryResult.Value)), &simResponse)
if err != nil {
return nil, err
}
return &simResponse, nil
}
// EstimateGas returns an estimate of gas usage for the given smart contract call.
// It adds 1,000 gas to the returned value instead of using the gas adjustment
// param from the SDK.
func (e *PublicEthAPI) EstimateGas(args rpctypes.CallArgs) (hexutil.Uint64, error) {
e.logger.Debugln("eth_estimateGas")
// From ContextWithHeight: if the provided height is 0,
// it will return an empty context and the gRPC query will use
// the latest block height for querying.
simRes, err := e.doCall(args, 0, big.NewInt(ethermint.DefaultRPCGasLimit))
if err != nil {
return 0, err
}
data, err := evmtypes.DecodeTxResponse(simRes.Result.Data)
if err != nil {
e.logger.WithError(err).Warningln("call result decoding failed")
return 0, err
}
if data.Reverted {
return 0, rpctypes.ErrRevertedWith(data.Ret)
}
// TODO: Add Gas Info from state transition to MsgEthereumTxResponse fields and return that instead
estimatedGas := simRes.GasInfo.GasUsed
gas := estimatedGas + 200000
return hexutil.Uint64(gas), nil
}
// GetBlockByHash returns the block identified by hash.
func (e *PublicEthAPI) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) {
e.logger.Debugln("eth_getBlockByHash", "hash", hash.Hex(), "full", fullTx)
return e.backend.GetBlockByHash(hash, fullTx)
}
// GetBlockByNumber returns the block identified by number.
func (e *PublicEthAPI) GetBlockByNumber(ethBlockNum rpctypes.BlockNumber, fullTx bool) (map[string]interface{}, error) {
e.logger.Debugln("eth_getBlockByNumber", "number", ethBlockNum, "full", fullTx)
return e.backend.GetBlockByNumber(ethBlockNum, fullTx)
}
// GetTransactionByHash returns the transaction identified by hash.
func (e *PublicEthAPI) GetTransactionByHash(hash common.Hash) (*rpctypes.RPCTransaction, error) {
e.logger.Debugln("eth_getTransactionByHash", "hash", hash.Hex())
res, err := e.clientCtx.Client.Tx(e.ctx, hash.Bytes(), false)
if err != nil {
e.logger.WithError(err).Debugln("tx not found", "hash", hash.Hex())
return nil, nil
}
resBlock, err := e.clientCtx.Client.Block(e.ctx, &res.Height)
if err != nil {
e.logger.WithError(err).Debugln("block not found", "height", res.Height)
return nil, nil
}
tx, err := e.clientCtx.TxConfig.TxDecoder()(res.Tx)
if err != nil {
e.logger.WithError(err).Debugln("decoding failed")
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
msg, ok := tx.(*evmtypes.MsgEthereumTx)
if !ok {
e.logger.Debugln("invalid tx")
return nil, fmt.Errorf("invalid tx type: %T", tx)
}
// TODO: use msg.AsTransaction.Hash() for txHash once hashing is fixed on Tendermint
// https://github.com/tendermint/tendermint/issues/6539
return rpctypes.NewTransactionFromData(
msg.Data,
common.HexToAddress(msg.From),
hash,
common.BytesToHash(resBlock.Block.Hash()),
uint64(res.Height),
uint64(res.Index),
)
}
// GetTransactionByBlockHashAndIndex returns the transaction identified by hash and index.
func (e *PublicEthAPI) GetTransactionByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) (*rpctypes.RPCTransaction, error) {
e.logger.Debugln("eth_getTransactionByBlockHashAndIndex", "hash", hash.Hex(), "index", idx)
resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
if err != nil {
e.logger.WithError(err).Debugln("block not found", "hash", hash.Hex())
return nil, nil
}
i := int(idx)
if i >= len(resBlock.Block.Txs) {
e.logger.Debugln("block txs index out of bound", "index", i)
return nil, nil
}
txBz := resBlock.Block.Txs[i]
tx, err := e.clientCtx.TxConfig.TxDecoder()(txBz)
if err != nil {
e.logger.WithError(err).Debugln("decoding failed")
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
msg, ok := tx.(*evmtypes.MsgEthereumTx)
if !ok {
e.logger.Debugln("invalid tx")
return nil, fmt.Errorf("invalid tx type: %T", tx)
}
// TODO: use msg.AsTransaction.Hash() for txHash once hashing is fixed on Tendermint
// https://github.com/tendermint/tendermint/issues/6539
txHash := common.BytesToHash(txBz.Hash())
return rpctypes.NewTransactionFromData(
msg.Data,
common.HexToAddress(msg.From),
txHash,
hash,
uint64(resBlock.Block.Height),
uint64(idx),
)
}
// GetTransactionByBlockNumberAndIndex returns the transaction identified by number and index.
func (e *PublicEthAPI) GetTransactionByBlockNumberAndIndex(blockNum rpctypes.BlockNumber, idx hexutil.Uint) (*rpctypes.RPCTransaction, error) {
e.logger.Debugln("eth_getTransactionByBlockNumberAndIndex", "number", blockNum, "index", idx)
resBlock, err := e.clientCtx.Client.Block(e.ctx, blockNum.TmHeight())
if err != nil {
e.logger.WithError(err).Debugln("block not found", "height", blockNum.Int64())
return nil, nil
}
i := int(idx)
if i >= len(resBlock.Block.Txs) {
e.logger.Debugln("block txs index out of bound", "index", i)
return nil, nil
}
txBz := resBlock.Block.Txs[i]
tx, err := e.clientCtx.TxConfig.TxDecoder()(txBz)
if err != nil {
e.logger.WithError(err).Debugln("decoding failed")
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
msg, ok := tx.(*evmtypes.MsgEthereumTx)
if !ok {
e.logger.Debugln("invalid tx")
return nil, fmt.Errorf("invalid tx type: %T", tx)
}
// TODO: use msg.AsTransaction.Hash() for txHash once hashing is fixed on Tendermint
// https://github.com/tendermint/tendermint/issues/6539
txHash := common.BytesToHash(txBz.Hash())
return rpctypes.NewTransactionFromData(
msg.Data,
common.HexToAddress(msg.From),
txHash,
common.BytesToHash(resBlock.Block.Hash()),
uint64(resBlock.Block.Height),
uint64(idx),
)
}
// GetTransactionReceipt returns the transaction receipt identified by hash.
func (e *PublicEthAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) {
e.logger.Debugln("eth_getTransactionReceipt", "hash", hash.Hex())
res, err := e.clientCtx.Client.Tx(e.ctx, hash.Bytes(), false)
if err != nil {
e.logger.WithError(err).Debugln("tx not found", "hash", hash.Hex())
return nil, nil
}
resBlock, err := e.clientCtx.Client.Block(e.ctx, &res.Height)
if err != nil {
e.logger.WithError(err).Debugln("block not found", "height", res.Height)
return nil, nil
}
tx, err := e.clientCtx.TxConfig.TxDecoder()(res.Tx)
if err != nil {
e.logger.WithError(err).Debugln("decoding failed")
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
msg, ok := tx.(*evmtypes.MsgEthereumTx)
if !ok {
e.logger.Debugln("invalid tx")
return nil, fmt.Errorf("invalid tx type: %T", tx)
}
cumulativeGasUsed := uint64(0)
blockRes, err := e.clientCtx.Client.BlockResults(e.ctx, &res.Height)
if err != nil {
e.logger.WithError(err).Debugln("failed to retrieve block results", "height", res.Height)
return nil, nil
}
for i := 0; i <= int(res.Index) && i < len(blockRes.TxsResults); i++ {
cumulativeGasUsed += uint64(blockRes.TxsResults[i].GasUsed)
}
var status hexutil.Uint
// NOTE: Response{Deliver/Check}Tx Code from Tendermint and the Ethereum receipt status are switched:
// | | Tendermint | Ethereum |
// | ------- | ---------- | -------- |
// | Success | 0 | 1 |
// | Fail | 1 | 0 |
if res.TxResult.Code == 0 {
status = hexutil.Uint(ethtypes.ReceiptStatusSuccessful)
} else {
status = hexutil.Uint(ethtypes.ReceiptStatusFailed)
}
from := common.HexToAddress(msg.From)
resLogs, err := e.queryClient.TxLogs(e.ctx, &evmtypes.QueryTxLogsRequest{Hash: hash.Hex()})
if err != nil {
e.logger.WithError(err).Debugln("logs not found", "hash", hash.Hex())
resLogs = &evmtypes.QueryTxLogsResponse{Logs: []*evmtypes.Log{}}
}
logs := evmtypes.LogsToEthereum(resLogs.Logs)
receipt := map[string]interface{}{
// Consensus fields: These fields are defined by the Yellow Paper
"status": status,
"cumulativeGasUsed": hexutil.Uint64(cumulativeGasUsed),
"logsBloom": ethtypes.BytesToBloom(ethtypes.LogsBloom(logs)),
"logs": logs,
// Implementation fields: These fields are added by geth when processing a transaction.
// They are stored in the chain database.
"transactionHash": hash,
"contractAddress": nil,
"gasUsed": hexutil.Uint64(res.TxResult.GasUsed),
"type": hexutil.Uint(ethtypes.AccessListTxType), // TODO: support legacy type
// Inclusion information: These fields provide information about the inclusion of the
// transaction corresponding to this receipt.
"blockHash": common.BytesToHash(resBlock.Block.Header.Hash()).Hex(),
"blockNumber": hexutil.Uint64(res.Height),
"transactionIndex": hexutil.Uint64(res.Index),
// sender and receiver (contract or EOA) addreses
"from": from,
"to": msg.To(),
}
if logs == nil {
receipt["logs"] = [][]*ethtypes.Log{}
}
// If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
if msg.To() == nil {
receipt["contractAddress"] = crypto.CreateAddress(from, msg.Data.Nonce)
}
return receipt, nil
}
// PendingTransactions returns the transactions that are in the transaction pool
// and have a from address that is one of the accounts this node manages.
func (e *PublicEthAPI) PendingTransactions() ([]*rpctypes.RPCTransaction, error) {
e.logger.Debugln("eth_getPendingTransactions")
return e.backend.PendingTransactions()
}
// GetUncleByBlockHashAndIndex returns the uncle identified by hash and index. Always returns nil.
func (e *PublicEthAPI) GetUncleByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) map[string]interface{} {
return nil
}
// GetUncleByBlockNumberAndIndex returns the uncle identified by number and index. Always returns nil.
func (e *PublicEthAPI) GetUncleByBlockNumberAndIndex(number hexutil.Uint, idx hexutil.Uint) map[string]interface{} {
return nil
}
// GetProof returns an account object with proof and any storage proofs
func (e *PublicEthAPI) GetProof(address common.Address, storageKeys []string, blockNumber rpctypes.BlockNumber) (*rpctypes.AccountResult, error) {
height := blockNumber.Int64()
e.logger.Debugln("eth_getProof", "address", address.Hex(), "keys", storageKeys, "number", height)
ctx := rpctypes.ContextWithHeight(height)
clientCtx := e.clientCtx.WithHeight(height)
// query storage proofs
storageProofs := make([]rpctypes.StorageResult, len(storageKeys))
for i, key := range storageKeys {
hexKey := common.HexToHash(key)
valueBz, proof, err := e.queryClient.GetProof(clientCtx, evmtypes.StoreKey, evmtypes.StateKey(address, hexKey.Bytes()))
if err != nil {
return nil, err
}
// check for proof
var proofStr string
if proof != nil {
proofStr = proof.String()
}
storageProofs[i] = rpctypes.StorageResult{
Key: key,
Value: (*hexutil.Big)(new(big.Int).SetBytes(valueBz)),
Proof: []string{proofStr},
}
}
// query EVM account
req := &evmtypes.QueryAccountRequest{
Address: address.String(),
}
res, err := e.queryClient.Account(ctx, req)
if err != nil {
return nil, err
}
// query account proofs
accountKey := authtypes.AddressStoreKey(sdk.AccAddress(address.Bytes()))
_, proof, err := e.queryClient.GetProof(clientCtx, authtypes.StoreKey, accountKey)
if err != nil {
return nil, err
}
// check for proof
var accProofStr string
if proof != nil {
accProofStr = proof.String()
}
balance, err := ethermint.UnmarshalBigInt(res.Balance)
if err != nil {
return nil, err
}
return &rpctypes.AccountResult{
Address: address,
AccountProof: []string{accProofStr},
Balance: (*hexutil.Big)(balance),
CodeHash: common.HexToHash(res.CodeHash),
Nonce: hexutil.Uint64(res.Nonce),
StorageHash: common.Hash{}, // NOTE: Ethermint doesn't have a storage hash. TODO: implement?
StorageProof: storageProofs,
}, nil
}
// setTxDefaults populates tx message with default values in case they are not
// provided on the args
func (e *PublicEthAPI) setTxDefaults(args rpctypes.SendTxArgs) (rpctypes.SendTxArgs, error) {
// Get nonce (sequence) from sender account
from := sdk.AccAddress(args.From.Bytes())
if args.GasPrice == nil {
// TODO: Change to either:
// - min gas price from context once available through server/daemon, or
// - suggest a gas price based on the previous included txs
args.GasPrice = (*hexutil.Big)(big.NewInt(ethermint.DefaultGasPrice))
}
if args.Nonce != nil {
// get the nonce from the account retriever
// ignore error in case tge account doesn't exist yet
_, nonce, _ := e.clientCtx.AccountRetriever.GetAccountNumberSequence(e.clientCtx, from)
args.Nonce = (*hexutil.Uint64)(&nonce)
}
if args.Data != nil && args.Input != nil && !bytes.Equal(*args.Data, *args.Input) {
return args, errors.New("both 'data' and 'input' are set and not equal. Please use 'input' to pass transaction call data")
}
if args.To == nil {
// Contract creation
var input []byte
if args.Data != nil {
input = *args.Data
} else if args.Input != nil {
input = *args.Input
}
if len(input) == 0 {
return args, errors.New(`contract creation without any data provided`)
}
}
if args.Gas == nil {
// For backwards-compatibility reason, we try both input and data
// but input is preferred.
input := args.Input
if input == nil {
input = args.Data
}
callArgs := rpctypes.CallArgs{
From: &args.From, // From shouldn't be nil
To: args.To,
Gas: args.Gas,
GasPrice: args.GasPrice,
Value: args.Value,
Data: input,
AccessList: args.AccessList,
}
estimated, err := e.EstimateGas(callArgs)
if err != nil {
return args, err
}
args.Gas = &estimated
e.logger.Debugln("estimate gas usage automatically", "gas", args.Gas)
}
if args.ChainID == nil {
args.ChainID = (*hexutil.Big)(e.chainIDEpoch)
}
return args, nil
}