package rpc import ( "bytes" "fmt" "log" "math/big" "strconv" "sync" "github.com/cosmos/cosmos-sdk/client/keys" emintcrypto "github.com/cosmos/ethermint/crypto" params "github.com/cosmos/ethermint/rpc/args" emint "github.com/cosmos/ethermint/types" etypes "github.com/cosmos/ethermint/types" "github.com/cosmos/ethermint/utils" "github.com/cosmos/ethermint/version" "github.com/cosmos/ethermint/x/evm" "github.com/cosmos/ethermint/x/evm/types" "github.com/tendermint/tendermint/rpc/client" 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/rlp" "github.com/ethereum/go-ethereum/rpc" "github.com/cosmos/cosmos-sdk/client/context" "github.com/cosmos/cosmos-sdk/client/flags" sdk "github.com/cosmos/cosmos-sdk/types" authutils "github.com/cosmos/cosmos-sdk/x/auth/client/utils" authtypes "github.com/cosmos/cosmos-sdk/x/auth/types" "github.com/spf13/viper" ) // PublicEthAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec. type PublicEthAPI struct { cliCtx context.CLIContext key emintcrypto.PrivKeySecp256k1 nonceLock *AddrLocker keybaseLock sync.Mutex gasLimit *int64 } // NewPublicEthAPI creates an instance of the public ETH Web3 API. func NewPublicEthAPI(cliCtx context.CLIContext, nonceLock *AddrLocker, key emintcrypto.PrivKeySecp256k1) *PublicEthAPI { return &PublicEthAPI{ cliCtx: cliCtx, key: key, nonceLock: nonceLock, } } // ProtocolVersion returns the supported Ethereum protocol version. func (e *PublicEthAPI) ProtocolVersion() hexutil.Uint { return hexutil.Uint(version.ProtocolVersion) } // 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) { status, err := e.cliCtx.Client.Status() 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 returns this node's coinbase address. Not used in Ethermint. func (e *PublicEthAPI) Coinbase() (addr common.Address) { return } // Mining returns whether or not this node is currently mining. Always false. func (e *PublicEthAPI) Mining() bool { return false } // Hashrate returns the current node's hashrate. Always 0. func (e *PublicEthAPI) Hashrate() hexutil.Uint64 { return 0 } // GasPrice returns the current gas price based on Ethermint's gas price oracle. func (e *PublicEthAPI) GasPrice() *hexutil.Big { 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.keybaseLock.Lock() addresses := make([]common.Address, 0) // return [] instead of nil if empty keybase, err := keys.NewKeyBaseFromHomeFlag() if err != nil { return addresses, err } infos, err := keybase.List() if err != nil { return addresses, err } keybase.CloseDB() e.keybaseLock.Unlock() 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) { res, _, err := e.cliCtx.QueryWithData(fmt.Sprintf("custom/%s/blockNumber", types.ModuleName), nil) if err != nil { return hexutil.Uint64(0), err } var out types.QueryResBlockNumber e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return hexutil.Uint64(out.Number), nil } // GetBalance returns the provided account's balance up to the provided block number. func (e *PublicEthAPI) GetBalance(address common.Address, blockNum BlockNumber) (*hexutil.Big, error) { ctx := e.cliCtx.WithHeight(blockNum.Int64()) res, _, err := ctx.QueryWithData(fmt.Sprintf("custom/%s/balance/%s", types.ModuleName, address.Hex()), nil) if err != nil { return nil, err } var out types.QueryResBalance e.cliCtx.Codec.MustUnmarshalJSON(res, &out) val, err := utils.UnmarshalBigInt(out.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 BlockNumber) (hexutil.Bytes, error) { ctx := e.cliCtx.WithHeight(blockNum.Int64()) res, _, err := ctx.QueryWithData(fmt.Sprintf("custom/%s/storage/%s/%s", types.ModuleName, address.Hex(), key), nil) if err != nil { return nil, err } var out types.QueryResStorage e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return out.Value, 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 BlockNumber) (*hexutil.Uint64, error) { ctx := e.cliCtx.WithHeight(blockNum.Int64()) res, _, err := ctx.QueryWithData(fmt.Sprintf("custom/%s/nonce/%s", types.ModuleName, address.Hex()), nil) if err != nil { return nil, err } var out types.QueryResNonce e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return (*hexutil.Uint64)(&out.Nonce), nil } // GetBlockTransactionCountByHash returns the number of transactions in the block identified by hash. func (e *PublicEthAPI) GetBlockTransactionCountByHash(hash common.Hash) *hexutil.Uint { res, _, err := e.cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryHashToHeight, hash.Hex())) if err != nil { // Return nil if block does not exist return nil } var out types.QueryResBlockNumber e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return e.getBlockTransactionCountByNumber(out.Number) } // GetBlockTransactionCountByNumber returns the number of transactions in the block identified by number. func (e *PublicEthAPI) GetBlockTransactionCountByNumber(blockNum BlockNumber) *hexutil.Uint { height := blockNum.Int64() return e.getBlockTransactionCountByNumber(height) } func (e *PublicEthAPI) getBlockTransactionCountByNumber(number int64) *hexutil.Uint { block, err := e.cliCtx.Client.Block(&number) if err != nil { // Return nil if block doesn't exist return nil } n := hexutil.Uint(block.Block.NumTxs) return &n } // GetUncleCountByBlockHash returns the number of uncles in the block idenfied by hash. Always zero. func (e *PublicEthAPI) GetUncleCountByBlockHash(hash common.Hash) hexutil.Uint { return 0 } // GetUncleCountByBlockNumber returns the number of uncles in the block idenfied by number. Always zero. func (e *PublicEthAPI) GetUncleCountByBlockNumber(blockNum 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 BlockNumber) (hexutil.Bytes, error) { ctx := e.cliCtx.WithHeight(blockNumber.Int64()) res, _, err := ctx.QueryWithData(fmt.Sprintf("custom/%s/code/%s", types.ModuleName, address.Hex()), nil) if err != nil { return nil, err } var out types.QueryResCode e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return out.Code, nil } // 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) { // TODO: Change this functionality to find an unlocked account by address if e.key == nil || !bytes.Equal(e.key.PubKey().Address().Bytes(), address.Bytes()) { return nil, keystore.ErrLocked } // Sign the requested hash with the wallet signature, err := e.key.Sign(data) if err == nil { signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper } return signature, err } // SendTransaction sends an Ethereum transaction. func (e *PublicEthAPI) SendTransaction(args params.SendTxArgs) (common.Hash, error) { // TODO: Change this functionality to find an unlocked account by address if e.key == nil || !bytes.Equal(e.key.PubKey().Address().Bytes(), args.From.Bytes()) { return common.Hash{}, keystore.ErrLocked } // Mutex lock the address' nonce to avoid assigning it to multiple requests if args.Nonce == nil { e.nonceLock.LockAddr(args.From) defer e.nonceLock.UnlockAddr(args.From) } // Assemble transaction from fields tx, err := e.GenerateFromArgs(args) if err != nil { return common.Hash{}, err } // ChainID must be set as flag to send transaction chainID := viper.GetString(flags.FlagChainID) // parse the chainID from a string to a base-10 integer intChainID, ok := new(big.Int).SetString(chainID, 10) if !ok { return common.Hash{}, fmt.Errorf( fmt.Sprintf("Invalid chainID: %s, must be integer format", chainID)) } // Sign transaction tx.Sign(intChainID, e.key.ToECDSA()) // Encode transaction by default Tx encoder txEncoder := authutils.GetTxEncoder(e.cliCtx.Codec) txBytes, err := txEncoder(tx) if err != nil { return common.Hash{}, err } // Broadcast transaction res, err := e.cliCtx.BroadcastTx(txBytes) // If error is encountered on the node, the broadcast will not return an error // TODO: Remove res log fmt.Println(res.RawLog) if err != nil { return common.Hash{}, err } // Return transaction hash return common.HexToHash(res.TxHash), nil } // SendRawTransaction send a raw Ethereum transaction. func (e *PublicEthAPI) SendRawTransaction(data hexutil.Bytes) (common.Hash, error) { tx := new(types.EthereumTxMsg) // RLP decode raw transaction bytes if err := rlp.DecodeBytes(data, tx); err != nil { // Return nil is for when gasLimit overflows uint64 return common.Hash{}, nil } // Encode transaction by default Tx encoder txEncoder := authutils.GetTxEncoder(e.cliCtx.Codec) txBytes, err := txEncoder(tx) if err != nil { return common.Hash{}, err } // TODO: Possibly log the contract creation address (if recipient address is nil) or tx data res, err := e.cliCtx.BroadcastTx(txBytes) // If error is encountered on the node, the broadcast will not return an error // TODO: Remove res log fmt.Println(res.RawLog) if err != nil { return common.Hash{}, err } // Return transaction hash return common.HexToHash(res.TxHash), nil } // CallArgs represents the arguments for a call. type CallArgs struct { From *common.Address `json:"from"` To *common.Address `json:"to"` Gas *hexutil.Uint64 `json:"gas"` GasPrice *hexutil.Big `json:"gasPrice"` Value *hexutil.Big `json:"value"` Data *hexutil.Bytes `json:"data"` } // Call performs a raw contract call. func (e *PublicEthAPI) Call(args CallArgs, blockNr rpc.BlockNumber, overrides *map[common.Address]account) (hexutil.Bytes, error) { result, err := e.doCall(args, blockNr, big.NewInt(emint.DefaultRPCGasLimit)) if err != nil { return []byte{}, err } _, _, ret, err := types.DecodeReturnData(result.Data) return (hexutil.Bytes)(ret), err } // account indicates the overriding fields of account during the execution of // a message call. // Note, state and stateDiff can't be specified at the same time. If state is // set, message execution will only use the data in the given state. Otherwise // if statDiff is set, all diff will be applied first and then execute the call // message. type account struct { Nonce *hexutil.Uint64 `json:"nonce"` Code *hexutil.Bytes `json:"code"` Balance **hexutil.Big `json:"balance"` State *map[common.Hash]common.Hash `json:"state"` StateDiff *map[common.Hash]common.Hash `json:"stateDiff"` } // DoCall performs a simulated call operation through the evm func (e *PublicEthAPI) doCall(args CallArgs, blockNr rpc.BlockNumber, globalGasCap *big.Int) (sdk.Result, error) { // Set height for historical queries ctx := e.cliCtx if blockNr.Int64() != 0 { ctx = e.cliCtx.WithHeight(blockNr.Int64()) } // Set sender address or use a default if none specified var addr common.Address if args.From == nil { if e.key != nil { addr = common.BytesToAddress(e.key.PubKey().Address().Bytes()) } // No error handled here intentionally to match geth behaviour } else { addr = *args.From } // Set default gas & gas price if none were set // Change this to uint64(math.MaxUint64 / 2) if gas cap can be configured gas := uint64(emint.DefaultRPCGasLimit) if args.Gas != nil { gas = uint64(*args.Gas) } if globalGasCap != nil && globalGasCap.Uint64() < gas { log.Println("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(emint.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) } // Set destination address for call var toAddr sdk.AccAddress if args.To != nil { toAddr = sdk.AccAddress(args.To.Bytes()) } // Create new call message msg := types.NewEmintMsg(0, &toAddr, sdk.NewIntFromBigInt(value), gas, sdk.NewIntFromBigInt(gasPrice), data, sdk.AccAddress(addr.Bytes())) // Generate tx to be used to simulate (signature isn't needed) var stdSig authtypes.StdSignature tx := authtypes.NewStdTx([]sdk.Msg{msg}, authtypes.StdFee{}, []authtypes.StdSignature{stdSig}, "") // Encode transaction by default Tx encoder txEncoder := authutils.GetTxEncoder(ctx.Codec) txBytes, err := txEncoder(tx) if err != nil { return sdk.Result{}, err } // Transaction simulation through query res, _, err := ctx.QueryWithData("app/simulate", txBytes) if err != nil { return sdk.Result{}, err } var simResult sdk.Result if err = e.cliCtx.Codec.UnmarshalBinaryLengthPrefixed(res, &simResult); err != nil { return sdk.Result{}, err } return simResult, nil } // EstimateGas estimates gas usage for the given smart contract call. func (e *PublicEthAPI) EstimateGas(args CallArgs) (hexutil.Uint64, error) { result, err := e.doCall(args, 0, big.NewInt(emint.DefaultRPCGasLimit)) if err != nil { return 0, err } // TODO: change 1000 buffer for more accurate buffer (must be at least 1 to not run OOG) return hexutil.Uint64(result.GasUsed + 1000), nil } // GetBlockByHash returns the block identified by hash. func (e *PublicEthAPI) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) { res, _, err := e.cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryHashToHeight, hash.Hex())) if err != nil { return nil, err } var out types.QueryResBlockNumber e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return e.getEthBlockByNumber(out.Number, fullTx) } // GetBlockByNumber returns the block identified by number. func (e *PublicEthAPI) GetBlockByNumber(blockNum BlockNumber, fullTx bool) (map[string]interface{}, error) { value := blockNum.Int64() return e.getEthBlockByNumber(value, fullTx) } func (e *PublicEthAPI) getEthBlockByNumber(value int64, fullTx bool) (map[string]interface{}, error) { // Remove this check when 0 query is fixed ref: (https://github.com/tendermint/tendermint/issues/4014) var blkNumPtr *int64 if value != 0 { blkNumPtr = &value } block, err := e.cliCtx.Client.Block(blkNumPtr) if err != nil { return nil, err } header := block.BlockMeta.Header gasLimit, err := e.getGasLimit() if err != nil { return nil, err } var gasUsed *big.Int var transactions []interface{} if fullTx { // Populate full transaction data transactions, gasUsed = convertTransactionsToRPC(e.cliCtx, block.Block.Txs, common.BytesToHash(header.Hash()), uint64(header.Height)) } else { // TODO: Gas used not saved and cannot be calculated by hashes // Return slice of transaction hashes transactions = make([]interface{}, len(block.Block.Txs)) for i, tx := range block.Block.Txs { transactions[i] = common.BytesToHash(tx.Hash()) } } res, _, err := e.cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryLogsBloom, strconv.FormatInt(block.Block.Height, 10))) if err != nil { return nil, err } var out types.QueryBloomFilter e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return formatBlock(header, block.Block.Size(), gasLimit, gasUsed, transactions, out.Bloom), nil } func formatBlock( header tmtypes.Header, size int, gasLimit int64, gasUsed *big.Int, transactions []interface{}, bloom ethtypes.Bloom, ) map[string]interface{} { return map[string]interface{}{ "number": hexutil.Uint64(header.Height), "hash": hexutil.Bytes(header.Hash()), "parentHash": hexutil.Bytes(header.LastBlockID.Hash), "nonce": nil, // PoW specific "sha3Uncles": nil, // No uncles in Tendermint "logsBloom": bloom, "transactionsRoot": hexutil.Bytes(header.DataHash), "stateRoot": hexutil.Bytes(header.AppHash), "miner": common.Address{}, "difficulty": nil, "totalDifficulty": nil, "extraData": nil, "size": hexutil.Uint64(size), "gasLimit": hexutil.Uint64(gasLimit), // Static gas limit "gasUsed": (*hexutil.Big)(gasUsed), "timestamp": hexutil.Uint64(header.Time.Unix()), "transactions": transactions, "uncles": nil, } } func convertTransactionsToRPC(cliCtx context.CLIContext, txs []tmtypes.Tx, blockHash common.Hash, height uint64) ([]interface{}, *big.Int) { transactions := make([]interface{}, len(txs)) gasUsed := big.NewInt(0) for i, tx := range txs { ethTx, err := bytesToEthTx(cliCtx, tx) if err != nil { continue } // TODO: Remove gas usage calculation if saving gasUsed per block gasUsed.Add(gasUsed, ethTx.Fee()) transactions[i] = newRPCTransaction(ethTx, blockHash, &height, uint64(i)) } return transactions, gasUsed } // Transaction represents a transaction returned to RPC clients. type Transaction struct { BlockHash *common.Hash `json:"blockHash"` BlockNumber *hexutil.Big `json:"blockNumber"` From common.Address `json:"from"` Gas hexutil.Uint64 `json:"gas"` GasPrice *hexutil.Big `json:"gasPrice"` Hash common.Hash `json:"hash"` Input hexutil.Bytes `json:"input"` Nonce hexutil.Uint64 `json:"nonce"` To *common.Address `json:"to"` TransactionIndex *hexutil.Uint64 `json:"transactionIndex"` Value *hexutil.Big `json:"value"` V *hexutil.Big `json:"v"` R *hexutil.Big `json:"r"` S *hexutil.Big `json:"s"` } func bytesToEthTx(cliCtx context.CLIContext, bz []byte) (*types.EthereumTxMsg, error) { var stdTx sdk.Tx err := cliCtx.Codec.UnmarshalBinaryLengthPrefixed(bz, &stdTx) ethTx, ok := stdTx.(*types.EthereumTxMsg) if !ok || err != nil { return nil, fmt.Errorf("Invalid transaction type, must be an amino encoded Ethereum transaction") } return ethTx, nil } // newRPCTransaction returns a transaction that will serialize to the RPC // representation, with the given location metadata set (if available). func newRPCTransaction(tx *types.EthereumTxMsg, blockHash common.Hash, blockNumber *uint64, index uint64) *Transaction { // Verify signature and retrieve sender address from, _ := tx.VerifySig(tx.ChainID()) result := &Transaction{ From: from, Gas: hexutil.Uint64(tx.Data.GasLimit), GasPrice: (*hexutil.Big)(tx.Data.Price), Hash: tx.Hash(), Input: hexutil.Bytes(tx.Data.Payload), Nonce: hexutil.Uint64(tx.Data.AccountNonce), To: tx.To(), Value: (*hexutil.Big)(tx.Data.Amount), V: (*hexutil.Big)(tx.Data.V), R: (*hexutil.Big)(tx.Data.R), S: (*hexutil.Big)(tx.Data.S), } if blockHash != (common.Hash{}) { result.BlockHash = &blockHash result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(*blockNumber)) result.TransactionIndex = (*hexutil.Uint64)(&index) } return result } // GetTransactionByHash returns the transaction identified by hash. func (e *PublicEthAPI) GetTransactionByHash(hash common.Hash) (*Transaction, error) { tx, err := e.cliCtx.Client.Tx(hash.Bytes(), false) if err != nil { // Return nil for transaction when not found return nil, nil } // Can either cache or just leave this out if not necessary block, err := e.cliCtx.Client.Block(&tx.Height) if err != nil { return nil, err } blockHash := common.BytesToHash(block.BlockMeta.Header.Hash()) ethTx, err := bytesToEthTx(e.cliCtx, tx.Tx) if err != nil { return nil, err } height := uint64(tx.Height) return newRPCTransaction(ethTx, blockHash, &height, uint64(tx.Index)), nil } // GetTransactionByBlockHashAndIndex returns the transaction identified by hash and index. func (e *PublicEthAPI) GetTransactionByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) (*Transaction, error) { res, _, err := e.cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryHashToHeight, hash.Hex())) if err != nil { return nil, err } var out types.QueryResBlockNumber e.cliCtx.Codec.MustUnmarshalJSON(res, &out) return e.getTransactionByBlockNumberAndIndex(out.Number, idx) } // GetTransactionByBlockNumberAndIndex returns the transaction identified by number and index. func (e *PublicEthAPI) GetTransactionByBlockNumberAndIndex(blockNum BlockNumber, idx hexutil.Uint) (*Transaction, error) { value := blockNum.Int64() return e.getTransactionByBlockNumberAndIndex(value, idx) } func (e *PublicEthAPI) getTransactionByBlockNumberAndIndex(number int64, idx hexutil.Uint) (*Transaction, error) { block, err := e.cliCtx.Client.Block(&number) if err != nil { return nil, err } header := block.BlockMeta.Header txs := block.Block.Txs if uint64(idx) >= uint64(len(txs)) { return nil, nil } ethTx, err := bytesToEthTx(e.cliCtx, txs[idx]) if err != nil { return nil, err } height := uint64(header.Height) transaction := newRPCTransaction(ethTx, common.BytesToHash(header.Hash()), &height, uint64(idx)) return transaction, nil } // GetTransactionReceipt returns the transaction receipt identified by hash. func (e *PublicEthAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) { tx, err := e.cliCtx.Client.Tx(hash.Bytes(), false) if err != nil { // Return nil for transaction when not found return nil, nil } // Query block for consensus hash block, err := e.cliCtx.Client.Block(&tx.Height) if err != nil { return nil, err } blockHash := common.BytesToHash(block.BlockMeta.Header.Hash()) // Convert tx bytes to eth transaction ethTx, err := bytesToEthTx(e.cliCtx, tx.Tx) if err != nil { return nil, err } from, _ := ethTx.VerifySig(ethTx.ChainID()) // Set status codes based on tx result var status hexutil.Uint if tx.TxResult.IsOK() { status = hexutil.Uint(1) } else { status = hexutil.Uint(0) } res, _, err := e.cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryTxLogs, hash.Hex())) if err != nil { return nil, err } var logs types.QueryETHLogs e.cliCtx.Codec.MustUnmarshalJSON(res, &logs) txData := tx.TxResult.GetData() contractAddress, bloomFilter, _, _ := types.DecodeReturnData(txData) fields := map[string]interface{}{ "blockHash": blockHash, "blockNumber": hexutil.Uint64(tx.Height), "transactionHash": hash, "transactionIndex": hexutil.Uint64(tx.Index), "from": from, "to": ethTx.To(), "gasUsed": hexutil.Uint64(tx.TxResult.GasUsed), "cumulativeGasUsed": nil, // ignore until needed "contractAddress": nil, "logs": logs.Logs, "logsBloom": bloomFilter, "status": status, } if contractAddress != (common.Address{}) { fields["contractAddress"] = contractAddress } return fields, 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() ([]*Transaction, error) { pendingTxs, err := e.cliCtx.Client.UnconfirmedTxs(100) if err != nil { return nil, err } transactions := make([]*Transaction, 0, 100) for _, tx := range pendingTxs.Txs { ethTx, err := bytesToEthTx(e.cliCtx, tx) if err != nil { return nil, err } // * Should check signer and reference against accounts the node manages in future rpcTx := newRPCTransaction(ethTx, common.Hash{}, nil, 0) transactions = append(transactions, rpcTx) } return transactions, nil } // 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 } // AccountResult struct for account proof type AccountResult struct { Address common.Address `json:"address"` AccountProof []string `json:"accountProof"` Balance *hexutil.Big `json:"balance"` CodeHash common.Hash `json:"codeHash"` Nonce hexutil.Uint64 `json:"nonce"` StorageHash common.Hash `json:"storageHash"` StorageProof []StorageResult `json:"storageProof"` } // StorageResult defines the format for storage proof return type StorageResult struct { Key string `json:"key"` Value *hexutil.Big `json:"value"` Proof []string `json:"proof"` } // GetProof returns an account object with proof and any storage proofs func (e *PublicEthAPI) GetProof(address common.Address, storageKeys []string, block BlockNumber) (*AccountResult, error) { opts := client.ABCIQueryOptions{Height: int64(block), Prove: true} path := fmt.Sprintf("custom/%s/%s/%s", types.ModuleName, evm.QueryAccount, address.Hex()) pRes, err := e.cliCtx.Client.ABCIQueryWithOptions(path, nil, opts) if err != nil { return nil, err } // TODO: convert TM merkle proof to []string if needed in future // proof := pRes.Response.GetProof() account := new(types.QueryAccount) e.cliCtx.Codec.MustUnmarshalJSON(pRes.Response.GetValue(), &account) storageProofs := make([]StorageResult, len(storageKeys)) for i, k := range storageKeys { // Get value for key vPath := fmt.Sprintf("custom/%s/%s/%s/%s", types.ModuleName, evm.QueryStorage, address, k) vRes, err := e.cliCtx.Client.ABCIQueryWithOptions(vPath, nil, opts) if err != nil { return nil, err } value := new(types.QueryResStorage) e.cliCtx.Codec.MustUnmarshalJSON(vRes.Response.GetValue(), &value) storageProofs[i] = StorageResult{ Key: k, Value: (*hexutil.Big)(common.BytesToHash(value.Value).Big()), Proof: []string{""}, } } return &AccountResult{ Address: address, AccountProof: []string{""}, // This shouldn't be necessary (different proof formats) Balance: (*hexutil.Big)(utils.MustUnmarshalBigInt(account.Balance)), CodeHash: common.BytesToHash(account.CodeHash), Nonce: hexutil.Uint64(account.Nonce), StorageHash: common.Hash{}, // Ethermint doesn't have a storage hash StorageProof: storageProofs, }, nil } // getGasLimit returns the gas limit per block set in genesis func (e *PublicEthAPI) getGasLimit() (int64, error) { // Retrieve from gasLimit variable cache if e.gasLimit != nil { return *e.gasLimit, nil } // Query genesis block if hasn't been retrieved yet genesis, err := e.cliCtx.Client.Genesis() if err != nil { return 0, err } // Save value to gasLimit cached value gasLimit := genesis.Genesis.ConsensusParams.Block.MaxGas if gasLimit == -1 { // Sets gas limit to max uint32 to not error with javascript dev tooling // This -1 value indicating no block gas limit is set to max uint64 with geth hexutils // which errors certain javascript dev tooling which only supports up to 53 bits gasLimit = int64(^uint32(0)) } e.gasLimit = &gasLimit return gasLimit, nil } // GenerateFromArgs populates tx message with args (used in RPC API) func (e *PublicEthAPI) GenerateFromArgs(args params.SendTxArgs) (msg *types.EthereumTxMsg, err error) { var nonce uint64 var gasLimit uint64 amount := (*big.Int)(args.Value) gasPrice := (*big.Int)(args.GasPrice) if args.GasPrice == nil { // Set default gas price // TODO: Change to min gas price from context once available through server/daemon gasPrice = big.NewInt(etypes.DefaultGasPrice) } if args.Nonce == nil { // Get nonce (sequence) from account from := sdk.AccAddress(args.From.Bytes()) _, nonce, err = authtypes.NewAccountRetriever(e.cliCtx).GetAccountNumberSequence(from) if err != nil { return nil, err } } else { nonce = (uint64)(*args.Nonce) } if args.Data != nil && args.Input != nil && !bytes.Equal(*args.Data, *args.Input) { return nil, fmt.Errorf(`both "data" and "input" are set and not equal. Please use "input" to pass transaction call data`) } // Sets input to either Input or Data, if both are set and not equal error above returns var input []byte if args.Input != nil { input = *args.Input } else if args.Data != nil { input = *args.Data } if args.To == nil { // Contract creation if len(input) == 0 { return nil, fmt.Errorf("contract creation without any data provided") } } if args.Gas == nil { callArgs := CallArgs{ From: &args.From, To: args.To, Gas: args.Gas, GasPrice: args.GasPrice, Value: args.Value, Data: args.Data, } g, _ := e.EstimateGas(callArgs) gasLimit = uint64(g) } else { gasLimit = (uint64)(*args.Gas) } return types.NewEthereumTxMsg(nonce, args.To, amount, gasLimit, gasPrice, input), nil }