package rpc import ( "bytes" "context" "encoding/json" "math/big" "strings" "sync" "github.com/cosmos/ethermint/ethereum/rpc/types" "github.com/gogo/protobuf/jsonpb" abci "github.com/tendermint/tendermint/abci/types" "github.com/pkg/errors" 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" 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" "github.com/tendermint/tendermint/crypto/tmhash" "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/rlp" 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 *types.QueryClient chainIDEpoch *big.Int logger log.Logger backend Backend nonceLock *types.AddrLocker keyringLock sync.Mutex } // NewPublicEthAPI creates an instance of the public ETH Web3 API. func NewPublicEthAPI( clientCtx client.Context, backend Backend, nonceLock *types.AddrLocker, ) *PublicEthAPI { epoch, err := ethermint.ParseChainID(clientCtx.ChainID) if err != nil { panic(err) } api := &PublicEthAPI{ ctx: context.Background(), clientCtx: clientCtx, queryClient: types.NewQueryClient(clientCtx), chainIDEpoch: epoch, logger: log.WithField("module", "json-rpc"), backend: backend, nonceLock: nonceLock, } return api } // ProtocolVersion returns the supported Ethereum protocol version. func (e *PublicEthAPI) ProtocolVersion() hexutil.Uint { e.logger.Debugln("eth_protocolVersion") return hexutil.Uint(evmtypes.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 types.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(types.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 types.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(types.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 types.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 types.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 types.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 types.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(types.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)) return nil, errors.New("eth_sign not supported") } // SendTransaction sends an Ethereum transaction. func (e *PublicEthAPI) SendTransaction(args types.SendTxArgs) (common.Hash, error) { e.logger.Debugln("eth_sendTransaction", "args", args) return common.Hash{}, errors.New("eth_sendTransaction not supported") } // 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)) ethereumTx := new(evmtypes.MsgEthereumTx) // RLP decode raw transaction bytes if err := rlp.DecodeBytes(data, ethereumTx); err != nil { e.logger.WithError(err).Errorln("transaction RLP decode failed") // Return nil is for when gasLimit overflows uint64 return common.Hash{}, err } 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.Panicln("codectypes.NewAnyWithValue failed to pack an obvious value") } builder.SetExtensionOptions(option) err = builder.SetMsgs(ethereumTx.GetMsgs()...) if err != nil { e.logger.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 } txHash := common.BytesToHash(tmhash.Sum(txBytes)) 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 types.CallArgs, blockNr types.BlockNumber, _ *types.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 } else if len(simRes.Result.Log) > 0 { var logs []types.SDKTxLogs if err := json.Unmarshal([]byte(simRes.Result.Log), &logs); err != nil { e.logger.WithError(err).Errorln("failed to unmarshal simRes.Result.Log") } if len(logs) > 0 && logs[0].Log == types.LogRevertedFlag { data, err := evmtypes.DecodeTxResponse(simRes.Result.Data) if err != nil { e.logger.WithError(err).Warningln("call result decoding failed") return []byte{}, err } return []byte{}, types.ErrRevertedWith(data.Ret) } } data, err := evmtypes.DecodeTxResponse(simRes.Result.Data) if err != nil { e.logger.WithError(err).Warningln("call result decoding failed") return []byte{}, err } 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 types.CallArgs, blockNr types.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()) } _, 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 = fromAddr.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 types.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 } if len(simRes.Result.Log) > 0 { var logs []types.SDKTxLogs if err := json.Unmarshal([]byte(simRes.Result.Log), &logs); err != nil { e.logger.WithError(err).Errorln("failed to unmarshal simRes.Result.Log") return 0, err } if len(logs) > 0 && logs[0].Log == types.LogRevertedFlag { data, err := evmtypes.DecodeTxResponse(simRes.Result.Data) if err != nil { e.logger.WithError(err).Warningln("call result decoding failed") return 0, err } return 0, types.ErrRevertedWith(data.Ret) } } // TODO: change 1000 buffer for more accurate buffer (eg: SDK's gasAdjusted) 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 types.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) (*types.RPCTransaction, error) { e.logger.Debugln("eth_getTransactionByHash", "hash", hash.Hex()) resp, err := e.queryClient.TxReceipt(e.ctx, &evmtypes.QueryTxReceiptRequest{ Hash: hash.Hex(), }) if err != nil { e.logger.Debugf("failed to get tx info for %s: %s", hash.Hex(), err.Error()) return nil, nil } return types.NewTransactionFromData( resp.Receipt.Data, common.BytesToAddress(resp.Receipt.From), common.BytesToHash(resp.Receipt.Hash), common.BytesToHash(resp.Receipt.BlockHash), resp.Receipt.BlockHeight, resp.Receipt.Index, ) } // GetTransactionByBlockHashAndIndex returns the transaction identified by hash and index. func (e *PublicEthAPI) GetTransactionByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) (*types.RPCTransaction, error) { e.logger.Debugln("eth_getTransactionByHashAndIndex", "hash", hash.Hex(), "index", idx) resp, err := e.queryClient.TxReceiptsByBlockHash(e.ctx, &evmtypes.QueryTxReceiptsByBlockHashRequest{ Hash: hash.Hex(), }) if err != nil { err = errors.Wrap(err, "failed to query tx receipts by block hash") return nil, err } return e.getReceiptByIndex(resp.Receipts, hash, idx) } // GetTransactionByBlockNumberAndIndex returns the transaction identified by number and index. func (e *PublicEthAPI) GetTransactionByBlockNumberAndIndex(blockNum types.BlockNumber, idx hexutil.Uint) (*types.RPCTransaction, error) { e.logger.Debugln("eth_getTransactionByBlockNumberAndIndex", "number", blockNum, "index", idx) resp, err := e.queryClient.TxReceiptsByBlockHeight(e.ctx, &evmtypes.QueryTxReceiptsByBlockHeightRequest{ Height: blockNum.Int64(), }) if err != nil { err = errors.Wrap(err, "failed to query tx receipts by block height") return nil, err } return e.getReceiptByIndex(resp.Receipts, common.Hash{}, idx) } func (e *PublicEthAPI) getReceiptByIndex(receipts []*evmtypes.TxReceipt, blockHash common.Hash, idx hexutil.Uint) (*types.RPCTransaction, error) { // return if index out of bounds if uint64(idx) >= uint64(len(receipts)) { return nil, nil } receipt := receipts[idx] if (blockHash != common.Hash{}) { if !bytes.Equal(receipt.BlockHash, blockHash.Bytes()) { err := errors.Errorf("receipt found but block hashes don't match %s != %s", common.Bytes2Hex(receipt.BlockHash), blockHash.Hex(), ) return nil, err } } return types.NewTransactionFromData( receipt.Data, common.BytesToAddress(receipt.From), common.BytesToHash(receipt.Hash), blockHash, receipt.BlockHeight, 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()) ctx := types.ContextWithHeight(int64(0)) tx, err := e.queryClient.TxReceipt(ctx, &evmtypes.QueryTxReceiptRequest{ Hash: hash.Hex(), }) if err != nil { e.logger.Debugf("failed to get tx receipt for %s: %s", hash.Hex(), err.Error()) return nil, nil } // Query block for consensus hash height := int64(tx.Receipt.BlockHeight) block, err := e.clientCtx.Client.Block(e.ctx, &height) if err != nil { e.logger.Warningln("didnt find block for tx height", height) return nil, err } cumulativeGasUsed := uint64(tx.Receipt.Result.GasUsed) if tx.Receipt.Index != 0 { cumulativeGasUsed += rpctypes.GetBlockCumulativeGas(e.clientCtx, block.Block, int(tx.Receipt.Index)) } var status hexutil.Uint if tx.Receipt.Result.Reverted { status = hexutil.Uint(0) } else { status = hexutil.Uint(1) } toHex := common.Address{} if len(tx.Receipt.Data.To) > 0 { toHex = common.BytesToAddress(tx.Receipt.Data.To) } contractAddress := common.HexToAddress(tx.Receipt.Result.ContractAddress) logsBloom := hexutil.Encode(ethtypes.BytesToBloom(tx.Receipt.Result.Bloom).Bytes()) receipt := map[string]interface{}{ // Consensus fields: These fields are defined by the Yellow Paper "status": status, "cumulativeGasUsed": hexutil.Uint64(cumulativeGasUsed), "logsBloom": logsBloom, "logs": tx.Receipt.Result.TxLogs.EthLogs(), // Implementation fields: These fields are added by geth when processing a transaction. // They are stored in the chain database. "transactionHash": hash.Hex(), "contractAddress": contractAddress.Hex(), "gasUsed": hexutil.Uint64(tx.Receipt.Result.GasUsed), // Inclusion information: These fields provide information about the inclusion of the // transaction corresponding to this receipt. "blockHash": common.BytesToHash(block.Block.Header.Hash()).Hex(), "blockNumber": hexutil.Uint64(tx.Receipt.BlockHeight), "transactionIndex": hexutil.Uint64(tx.Receipt.Index), // sender and receiver (contract or EOA) addreses "from": common.BytesToAddress(tx.Receipt.From), "to": toHex, } 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() ([]*types.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 types.BlockNumber) (*types.AccountResult, error) { height := blockNumber.Int64() e.logger.Debugln("eth_getProof", "address", address.Hex(), "keys", storageKeys, "number", height) ctx := types.ContextWithHeight(height) clientCtx := e.clientCtx.WithHeight(height) // query storage proofs storageProofs := make([]types.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] = types.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 &types.AccountResult{ Address: address, AccountProof: []string{accProofStr}, Balance: (*hexutil.Big)(balance), CodeHash: common.BytesToHash(res.CodeHash), Nonce: hexutil.Uint64(res.Nonce), StorageHash: common.Hash{}, // NOTE: Ethermint doesn't have a storage hash. TODO: implement? StorageProof: storageProofs, }, nil }