diff options
Diffstat (limited to 'internal/ethapi')
| -rw-r--r-- | internal/ethapi/api.go | 393 | ||||
| -rw-r--r-- | internal/ethapi/backend.go | 24 |
2 files changed, 298 insertions, 119 deletions
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index 8bc2f94..8753c05 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -35,21 +35,18 @@ import ( "github.com/ava-labs/coreth/core/vm" "github.com/ava-labs/coreth/params" "github.com/ava-labs/coreth/rpc" - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/common/math" - "github.com/ava-labs/go-ethereum/crypto" - "github.com/ava-labs/go-ethereum/log" - "github.com/ava-labs/go-ethereum/p2p" - "github.com/ava-labs/go-ethereum/rlp" "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/accounts/abi" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/p2p" + "github.com/ethereum/go-ethereum/rlp" "github.com/tyler-smith/go-bip39" ) -const ( - defaultGasPrice = params.GWei -) - // PublicEthereumAPI provides an API to access Ethereum related information. // It offers only methods that operate on public data that is freely available to anyone. type PublicEthereumAPI struct { @@ -279,7 +276,11 @@ func (s *PrivateAccountAPI) DeriveAccount(url string, path string, pin *bool) (a // NewAccount will create a new account and returns the address for the new account. func (s *PrivateAccountAPI) NewAccount(password string) (common.Address, error) { - acc, err := fetchKeystore(s.am).NewAccount(password) + ks, err := fetchKeystore(s.am) + if err != nil { + return common.Address{}, err + } + acc, err := ks.NewAccount(password) if err == nil { log.Info("Your new key was generated", "address", acc.Address) log.Warn("Please backup your key file!", "path", acc.URL.Path) @@ -289,9 +290,12 @@ func (s *PrivateAccountAPI) NewAccount(password string) (common.Address, error) return common.Address{}, err } -// fetchKeystore retrives the encrypted keystore from the account manager. -func fetchKeystore(am *accounts.Manager) *keystore.KeyStore { - return am.Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore) +// fetchKeystore retrieves the encrypted keystore from the account manager. +func fetchKeystore(am *accounts.Manager) (*keystore.KeyStore, error) { + if ks := am.Backends(keystore.KeyStoreType); len(ks) > 0 { + return ks[0].(*keystore.KeyStore), nil + } + return nil, errors.New("local keystore not used") } // ImportRawKey stores the given hex encoded ECDSA key into the key directory, @@ -301,7 +305,11 @@ func (s *PrivateAccountAPI) ImportRawKey(privkey string, password string) (commo if err != nil { return common.Address{}, err } - acc, err := fetchKeystore(s.am).ImportECDSA(key, password) + ks, err := fetchKeystore(s.am) + if err != nil { + return common.Address{}, err + } + acc, err := ks.ImportECDSA(key, password) return acc.Address, err } @@ -325,7 +333,11 @@ func (s *PrivateAccountAPI) UnlockAccount(ctx context.Context, addr common.Addre } else { d = time.Duration(*duration) * time.Second } - err := fetchKeystore(s.am).TimedUnlock(accounts.Account{Address: addr}, password, d) + ks, err := fetchKeystore(s.am) + if err != nil { + return false, err + } + err = ks.TimedUnlock(accounts.Account{Address: addr}, password, d) if err != nil { log.Warn("Failed account unlock attempt", "address", addr, "err", err) } @@ -334,7 +346,10 @@ func (s *PrivateAccountAPI) UnlockAccount(ctx context.Context, addr common.Addre // LockAccount will lock the account associated with the given address when it's unlocked. func (s *PrivateAccountAPI) LockAccount(addr common.Address) bool { - return fetchKeystore(s.am).Lock(addr) == nil + if ks, err := fetchKeystore(s.am); err == nil { + return ks.Lock(addr) == nil + } + return false } // signTransaction sets defaults and signs the given transaction @@ -391,6 +406,10 @@ func (s *PrivateAccountAPI) SignTransaction(ctx context.Context, args SendTxArgs if args.Nonce == nil { return nil, fmt.Errorf("nonce not specified") } + // Before actually sign the transaction, ensure the transaction fee is reasonable. + if err := checkTxFee(args.GasPrice.ToInt(), uint64(*args.Gas), s.b.RPCTxFeeCap()); err != nil { + return nil, err + } signed, err := s.signTransaction(ctx, &args, passwd) if err != nil { log.Warn("Failed transaction sign attempt", "from", args.From, "to", args.To, "value", args.Value.ToInt(), "err", err) @@ -485,7 +504,7 @@ func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (s case *scwallet.Wallet: return mnemonic, wallet.Initialize(seed) default: - return "", fmt.Errorf("Specified wallet does not support initialization") + return "", fmt.Errorf("specified wallet does not support initialization") } } @@ -500,7 +519,7 @@ func (s *PrivateAccountAPI) Unpair(ctx context.Context, url string, pin string) case *scwallet.Wallet: return wallet.Unpair([]byte(pin)) default: - return fmt.Errorf("Specified wallet does not support pairing") + return fmt.Errorf("specified wallet does not support pairing") } } @@ -529,8 +548,8 @@ func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 { // GetBalance returns the amount of wei for the given address in the state of the // given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta // block numbers are also allowed. -func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Big, error) { - state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr) +func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Big, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { return nil, err } @@ -554,8 +573,8 @@ type StorageResult struct { } // GetProof returns the Merkle-proof for a given account and optionally some storage keys. -func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Address, storageKeys []string, blockNr rpc.BlockNumber) (*AccountResult, error) { - state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr) +func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Address, storageKeys []string, blockNrOrHash rpc.BlockNumberOrHash) (*AccountResult, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { return nil, err } @@ -609,7 +628,7 @@ func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Addre func (s *PublicBlockChainAPI) GetHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (map[string]interface{}, error) { header, err := s.b.HeaderByNumber(ctx, number) if header != nil && err == nil { - response := s.rpcMarshalHeader(header) + response := s.rpcMarshalHeader(ctx, header) if number == rpc.PendingBlockNumber { // Pending header need to nil out a few fields for _, field := range []string{"hash", "nonce", "miner"} { @@ -625,7 +644,7 @@ func (s *PublicBlockChainAPI) GetHeaderByNumber(ctx context.Context, number rpc. func (s *PublicBlockChainAPI) GetHeaderByHash(ctx context.Context, hash common.Hash) map[string]interface{} { header, _ := s.b.HeaderByHash(ctx, hash) if header != nil { - return s.rpcMarshalHeader(header) + return s.rpcMarshalHeader(ctx, header) } return nil } @@ -638,7 +657,7 @@ func (s *PublicBlockChainAPI) GetHeaderByHash(ctx context.Context, hash common.H func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, number rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) { block, err := s.b.BlockByNumber(ctx, number) if block != nil && err == nil { - response, err := s.rpcMarshalBlock(block, true, fullTx) + response, err := s.rpcMarshalBlock(ctx, block, true, fullTx) if err == nil && number == rpc.PendingBlockNumber { // Pending blocks need to nil out a few fields for _, field := range []string{"hash", "nonce", "miner"} { @@ -655,7 +674,7 @@ func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, number rpc.B func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, hash common.Hash, fullTx bool) (map[string]interface{}, error) { block, err := s.b.BlockByHash(ctx, hash) if block != nil { - return s.rpcMarshalBlock(block, true, fullTx) + return s.rpcMarshalBlock(ctx, block, true, fullTx) } return nil, err } @@ -671,7 +690,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(ctx context.Context, return nil, nil } block = types.NewBlockWithHeader(uncles[index]) - return s.rpcMarshalBlock(block, false, false) + return s.rpcMarshalBlock(ctx, block, false, false) } return nil, err } @@ -687,7 +706,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(ctx context.Context, b return nil, nil } block = types.NewBlockWithHeader(uncles[index]) - return s.rpcMarshalBlock(block, false, false) + return s.rpcMarshalBlock(ctx, block, false, false) } return nil, err } @@ -711,8 +730,8 @@ func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(ctx context.Context, bloc } // GetCode returns the code stored at the given address in the state for the given block number. -func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (hexutil.Bytes, error) { - state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr) +func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { return nil, err } @@ -723,8 +742,8 @@ func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Addres // GetStorageAt returns the storage from the state at the given address, key and // block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block // numbers are also allowed. -func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNr rpc.BlockNumber) (hexutil.Bytes, error) { - state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr) +func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) { + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { return nil, err } @@ -742,6 +761,45 @@ type CallArgs struct { Data *hexutil.Bytes `json:"data"` } +// ToMessage converts CallArgs to the Message type used by the core evm +func (args *CallArgs) ToMessage(globalGasCap uint64) types.Message { + // Set sender address or use zero address if none specified. + var addr common.Address + if args.From != nil { + addr = *args.From + } + + // Set default gas & gas price if none were set + gas := globalGasCap + if gas == 0 { + gas = uint64(math.MaxUint64 / 2) + } + if args.Gas != nil { + gas = uint64(*args.Gas) + } + if globalGasCap != 0 && globalGasCap < gas { + log.Warn("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap) + gas = globalGasCap + } + gasPrice := new(big.Int) + if args.GasPrice != nil { + gasPrice = args.GasPrice.ToInt() + } + + value := new(big.Int) + if args.Value != nil { + value = args.Value.ToInt() + } + + var data []byte + if args.Data != nil { + data = []byte(*args.Data) + } + + msg := types.NewMessage(addr, args.To, 0, value, gas, gasPrice, data, false) + return msg +} + // 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 @@ -756,23 +814,12 @@ type account struct { StateDiff *map[common.Hash]common.Hash `json:"stateDiff"` } -func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, overrides map[common.Address]account, vmCfg vm.Config, timeout time.Duration, globalGasCap *big.Int) ([]byte, uint64, bool, error) { +func DoCall(ctx context.Context, b Backend, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides map[common.Address]account, vmCfg vm.Config, timeout time.Duration, globalGasCap uint64) (*core.ExecutionResult, error) { defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now()) - state, header, err := b.StateAndHeaderByNumber(ctx, blockNr) + state, header, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { - return nil, 0, false, err - } - // Set sender address or use a default if none specified - var addr common.Address - if args.From == nil { - if wallets := b.AccountManager().Wallets(); len(wallets) > 0 { - if accounts := wallets[0].Accounts(); len(accounts) > 0 { - addr = accounts[0].Address - } - } - } else { - addr = *args.From + return nil, err } // Override the fields of specified contracts before execution. for addr, account := range overrides { @@ -789,7 +836,7 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb state.SetBalance(addr, (*big.Int)(*account.Balance)) } if account.State != nil && account.StateDiff != nil { - return nil, 0, false, fmt.Errorf("account %s has both 'state' and 'stateDiff'", addr.Hex()) + return nil, fmt.Errorf("account %s has both 'state' and 'stateDiff'", addr.Hex()) } // Replace entire state if caller requires. if account.State != nil { @@ -802,33 +849,6 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb } } } - // Set default gas & gas price if none were set - gas := uint64(math.MaxUint64 / 2) - if args.Gas != nil { - gas = uint64(*args.Gas) - } - if globalGasCap != nil && globalGasCap.Uint64() < gas { - log.Warn("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap) - gas = globalGasCap.Uint64() - } - gasPrice := new(big.Int).SetUint64(defaultGasPrice) - if args.GasPrice != nil { - gasPrice = args.GasPrice.ToInt() - } - - value := new(big.Int) - if args.Value != nil { - value = args.Value.ToInt() - } - - var data []byte - if args.Data != nil { - data = []byte(*args.Data) - } - - // Create new call message - msg := types.NewMessage(addr, args.To, 0, value, gas, gasPrice, data, false) - // Setup context so it may be cancelled the call has completed // or, in case of unmetered gas, setup a context with a timeout. var cancel context.CancelFunc @@ -842,9 +862,10 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb defer cancel() // Get a new instance of the EVM. + msg := args.ToMessage(globalGasCap) evm, vmError, err := b.GetEVM(ctx, msg, state, header) if err != nil { - return nil, 0, false, err + return nil, err } // Wait for the context to be done and cancel the evm. Even if the // EVM has finished, cancelling may be done (repeatedly) @@ -856,15 +877,48 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb // Setup the gas pool (also for unmetered requests) // and apply the message. gp := new(core.GasPool).AddGas(math.MaxUint64) - res, gas, failed, err := core.ApplyMessage(evm, msg, gp) + result, err := core.ApplyMessage(evm, msg, gp) if err := vmError(); err != nil { - return nil, 0, false, err + return nil, err } // If the timer caused an abort, return an appropriate error message if evm.Cancelled() { - return nil, 0, false, fmt.Errorf("execution aborted (timeout = %v)", timeout) + return nil, fmt.Errorf("execution aborted (timeout = %v)", timeout) } - return res, gas, failed, err + if err != nil { + return result, fmt.Errorf("err: %w (supplied gas %d)", err, msg.Gas()) + } + return result, nil +} + +func newRevertError(result *core.ExecutionResult) *revertError { + reason, errUnpack := abi.UnpackRevert(result.Revert()) + err := errors.New("execution reverted") + if errUnpack == nil { + err = fmt.Errorf("execution reverted: %v", reason) + } + return &revertError{ + error: err, + reason: hexutil.Encode(result.Revert()), + } +} + +// revertError is an API error that encompassas an EVM revertal with JSON error +// code and a binary data blob. +type revertError struct { + error + reason string // revert reason hex encoded +} + +// ErrorCode returns the JSON error code for a revertal. +// See: https://github.com/ethereum/wiki/wiki/JSON-RPC-Error-Codes-Improvement-Proposal +func (e *revertError) ErrorCode() int { + return 3 +} + +// ErrorData returns the hex encoded revert reason. +func (e *revertError) ErrorData() interface{} { + return e.reason } // Call executes the given transaction on the state for the given block number. @@ -873,52 +927,103 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb // // Note, this function doesn't make and changes in the state/blockchain and is // useful to execute and retrieve values. -func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber, overrides *map[common.Address]account) (hexutil.Bytes, error) { +func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides *map[common.Address]account) (hexutil.Bytes, error) { var accounts map[common.Address]account if overrides != nil { accounts = *overrides } - result, _, _, err := DoCall(ctx, s.b, args, blockNr, accounts, vm.Config{}, 5*time.Second, s.b.RPCGasCap()) - return (hexutil.Bytes)(result), err + result, err := DoCall(ctx, s.b, args, blockNrOrHash, accounts, vm.Config{}, 5*time.Second, s.b.RPCGasCap()) + if err != nil { + return nil, err + } + // If the result contains a revert reason, try to unpack and return it. + if len(result.Revert()) > 0 { + return nil, newRevertError(result) + } + return result.Return(), result.Err } -func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, gasCap *big.Int) (hexutil.Uint64, error) { +func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, gasCap uint64) (hexutil.Uint64, error) { // Binary search the gas requirement, as it may be higher than the amount used var ( lo uint64 = params.TxGas - 1 hi uint64 cap uint64 ) + // Use zero address if sender unspecified. + if args.From == nil { + args.From = new(common.Address) + } + // Determine the highest gas limit can be used during the estimation. if args.Gas != nil && uint64(*args.Gas) >= params.TxGas { hi = uint64(*args.Gas) } else { // Retrieve the block to act as the gas ceiling - block, err := b.BlockByNumber(ctx, blockNr) + block, err := b.BlockByNumberOrHash(ctx, blockNrOrHash) if err != nil { return 0, err } hi = block.GasLimit() } - if gasCap != nil && hi > gasCap.Uint64() { + // Recap the highest gas limit with account's available balance. + if args.GasPrice != nil && args.GasPrice.ToInt().BitLen() != 0 { + state, _, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) + if err != nil { + return 0, err + } + balance := state.GetBalance(*args.From) // from can't be nil + available := new(big.Int).Set(balance) + if args.Value != nil { + if args.Value.ToInt().Cmp(available) >= 0 { + return 0, errors.New("insufficient funds for transfer") + } + available.Sub(available, args.Value.ToInt()) + } + allowance := new(big.Int).Div(available, args.GasPrice.ToInt()) + + // If the allowance is larger than maximum uint64, skip checking + if allowance.IsUint64() && hi > allowance.Uint64() { + transfer := args.Value + if transfer == nil { + transfer = new(hexutil.Big) + } + log.Warn("Gas estimation capped by limited funds", "original", hi, "balance", balance, + "sent", transfer.ToInt(), "gasprice", args.GasPrice.ToInt(), "fundable", allowance) + hi = allowance.Uint64() + } + } + // Recap the highest gas allowance with specified gascap. + if gasCap != 0 && hi > gasCap { log.Warn("Caller gas above allowance, capping", "requested", hi, "cap", gasCap) - hi = gasCap.Uint64() + hi = gasCap } cap = hi // Create a helper to check if a gas allowance results in an executable transaction - executable := func(gas uint64) bool { + executable := func(gas uint64) (bool, *core.ExecutionResult, error) { args.Gas = (*hexutil.Uint64)(&gas) - _, _, failed, err := DoCall(ctx, b, args, rpc.PendingBlockNumber, nil, vm.Config{}, 0, gasCap) - if err != nil || failed { - return false + result, err := DoCall(ctx, b, args, blockNrOrHash, nil, vm.Config{}, 0, gasCap) + if err != nil { + if errors.Is(err, core.ErrIntrinsicGas) { + return true, nil, nil // Special case, raise gas limit + } + return true, nil, err // Bail out } - return true + return result.Failed(), result, nil } // Execute the binary search and hone in on an executable gas limit for lo+1 < hi { mid := (hi + lo) / 2 - if !executable(mid) { + failed, _, err := executable(mid) + + // If the error is not nil(consensus error), it means the provided message + // call or transaction will never be accepted no matter how much gas it is + // assigned. Return the error directly, don't struggle any more. + if err != nil { + return 0, err + } + if failed { lo = mid } else { hi = mid @@ -926,8 +1031,19 @@ func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.Bl } // Reject the transaction as invalid if it still fails at the highest allowance if hi == cap { - if !executable(hi) { - return 0, fmt.Errorf("gas required exceeds allowance (%d) or always failing transaction", cap) + failed, result, err := executable(hi) + if err != nil { + return 0, err + } + if failed { + if result != nil && result.Err != vm.ErrOutOfGas { + if len(result.Revert()) > 0 { + return 0, newRevertError(result) + } + return 0, result.Err + } + // Otherwise, the specified gas cap is too low + return 0, fmt.Errorf("gas required exceeds allowance (%d)", cap) } } return hexutil.Uint64(hi), nil @@ -936,7 +1052,8 @@ func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.Bl // EstimateGas returns an estimate of the amount of gas needed to execute the // given transaction against the current pending block. func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (hexutil.Uint64, error) { - return DoEstimateGas(ctx, s.b, args, rpc.PendingBlockNumber, s.b.RPCGasCap()) + blockNrOrHash := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) + return DoEstimateGas(ctx, s.b, args, blockNrOrHash, s.b.RPCGasCap()) } // ExecutionResult groups all structured logs emitted by the EVM @@ -1061,20 +1178,22 @@ func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]i // rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires // a `PublicBlockchainAPI`. -func (s *PublicBlockChainAPI) rpcMarshalHeader(header *types.Header) map[string]interface{} { +func (s *PublicBlockChainAPI) rpcMarshalHeader(ctx context.Context, header *types.Header) map[string]interface{} { fields := RPCMarshalHeader(header) - fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(header.Hash())) + fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(ctx, header.Hash())) return fields } // rpcMarshalBlock uses the generalized output filler, then adds the total difficulty field, which requires // a `PublicBlockchainAPI`. -func (s *PublicBlockChainAPI) rpcMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) { +func (s *PublicBlockChainAPI) rpcMarshalBlock(ctx context.Context, b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) { fields, err := RPCMarshalBlock(b, inclTx, fullTx) if err != nil { return nil, err } - fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(b.Hash())) + if inclTx { + fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(ctx, b.Hash())) + } return fields, err } @@ -1223,9 +1342,9 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockHashAndIndex(ctx cont } // GetTransactionCount returns the number of transactions the given address has sent for the given block number -func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Uint64, error) { +func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Uint64, error) { // Ask transaction pool for the nonce which includes pending transactions - if blockNr == rpc.PendingBlockNumber { + if blockNr, ok := blockNrOrHash.Number(); ok && blockNr == rpc.PendingBlockNumber { nonce, err := s.b.GetPoolNonce(ctx, address) if err != nil { return nil, err @@ -1233,7 +1352,7 @@ func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, addr return (*hexutil.Uint64)(&nonce), nil } // Resolve block number and use its state to ask for the nonce - state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr) + state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) if state == nil || err != nil { return nil, err } @@ -1279,8 +1398,8 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, // GetTransactionReceipt returns the transaction receipt for the given transaction hash. func (s *PublicTransactionPoolAPI) GetTransactionReceipt(ctx context.Context, hash common.Hash) (map[string]interface{}, error) { - tx, blockHash, blockNumber, index := rawdb.ReadTransaction(s.b.ChainDb(), hash) - if tx == nil { + tx, blockHash, blockNumber, index, err := s.b.GetTransaction(ctx, hash) + if err != nil { return nil, nil } receipts, err := s.b.GetReceipts(ctx, blockHash) @@ -1375,7 +1494,7 @@ func (args *SendTxArgs) setDefaults(ctx context.Context, b Backend) error { args.Nonce = (*hexutil.Uint64)(&nonce) } if args.Data != nil && args.Input != nil && !bytes.Equal(*args.Data, *args.Input) { - return errors.New(`Both "data" and "input" are set and not equal. Please use "input" to pass transaction call data.`) + return 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 @@ -1404,7 +1523,8 @@ func (args *SendTxArgs) setDefaults(ctx context.Context, b Backend) error { Value: args.Value, Data: input, } - estimated, err := DoEstimateGas(ctx, b, callArgs, rpc.PendingBlockNumber, b.RPCGasCap()) + pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) + estimated, err := DoEstimateGas(ctx, b, callArgs, pendingBlockNr, b.RPCGasCap()) if err != nil { return err } @@ -1429,6 +1549,11 @@ func (args *SendTxArgs) toTransaction() *types.Transaction { // SubmitTransaction is a helper function that submits tx to txPool and logs a message. func SubmitTransaction(ctx context.Context, b Backend, tx *types.Transaction) (common.Hash, error) { + // If the transaction fee cap is already specified, ensure the + // fee of the given transaction is _reasonable_. + if err := checkTxFee(tx.GasPrice(), tx.Gas(), b.RPCTxFeeCap()); err != nil { + return common.Hash{}, err + } if err := b.SendTx(ctx, tx); err != nil { return common.Hash{}, err } @@ -1478,6 +1603,22 @@ func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args Sen return SubmitTransaction(ctx, s.b, signed) } +// FillTransaction fills the defaults (nonce, gas, gasPrice) on a given unsigned transaction, +// and returns it to the caller for further processing (signing + broadcast) +func (s *PublicTransactionPoolAPI) FillTransaction(ctx context.Context, args SendTxArgs) (*SignTransactionResult, error) { + // Set some sanity defaults and terminate on failure + if err := args.setDefaults(ctx, s.b); err != nil { + return nil, err + } + // Assemble the transaction and obtain rlp + tx := args.toTransaction() + data, err := rlp.EncodeToBytes(tx) + if err != nil { + return nil, err + } + return &SignTransactionResult{data, tx}, nil +} + // SendRawTransaction will add the signed transaction to the transaction pool. // The sender is responsible for signing the transaction and using the correct nonce. func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, encodedTx hexutil.Bytes) (common.Hash, error) { @@ -1535,6 +1676,10 @@ func (s *PublicTransactionPoolAPI) SignTransaction(ctx context.Context, args Sen if err := args.setDefaults(ctx, s.b); err != nil { return nil, err } + // Before actually sign the transaction, ensure the transaction fee is reasonable. + if err := checkTxFee(args.GasPrice.ToInt(), uint64(*args.Gas), s.b.RPCTxFeeCap()); err != nil { + return nil, err + } tx, err := s.sign(args.From, args.toTransaction()) if err != nil { return nil, err @@ -1583,11 +1728,24 @@ func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs SendTxAr return common.Hash{}, err } matchTx := sendArgs.toTransaction() + + // Before replacing the old transaction, ensure the _new_ transaction fee is reasonable. + var price = matchTx.GasPrice() + if gasPrice != nil { + price = gasPrice.ToInt() + } + var gas = matchTx.Gas() + if gasLimit != nil { + gas = uint64(*gasLimit) + } + if err := checkTxFee(price, gas, s.b.RPCTxFeeCap()); err != nil { + return common.Hash{}, err + } + // Iterate the pending list for replacement pending, err := s.b.GetPoolTransactions() if err != nil { return common.Hash{}, err } - for _, p := range pending { var signer types.Signer = types.HomesteadSigner{} if p.Protected() { @@ -1614,7 +1772,7 @@ func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs SendTxAr } } - return common.Hash{}, fmt.Errorf("Transaction %#x not found", matchTx.Hash()) + return common.Hash{}, fmt.Errorf("transaction %#x not found", matchTx.Hash()) } // PublicDebugAPI is the collection of Ethereum APIs exposed over the public @@ -1725,3 +1883,18 @@ func (s *PublicNetAPI) PeerCount() hexutil.Uint { func (s *PublicNetAPI) Version() string { return fmt.Sprintf("%d", s.networkVersion) } + +// checkTxFee is an internal function used to check whether the fee of +// the given transaction is _reasonable_(under the cap). +func checkTxFee(gasPrice *big.Int, gas uint64, cap float64) error { + // Short circuit if there is no cap for transaction fee at all. + if cap == 0 { + return nil + } + feeEth := new(big.Float).Quo(new(big.Float).SetInt(new(big.Int).Mul(gasPrice, new(big.Int).SetUint64(gas))), new(big.Float).SetInt(big.NewInt(params.Ether))) + feeFloat, _ := feeEth.Float64() + if feeFloat > cap { + return fmt.Errorf("tx fee (%.2f ether) exceeds the configured cap (%.2f ether)", feeFloat, cap) + } + return nil +} diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go index fb38034..ae4196f 100644 --- a/internal/ethapi/backend.go +++ b/internal/ethapi/backend.go @@ -28,11 +28,11 @@ import ( "github.com/ava-labs/coreth/core/vm" "github.com/ava-labs/coreth/params" "github.com/ava-labs/coreth/rpc" - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/bloombits" - "github.com/ava-labs/go-ethereum/eth/downloader" - "github.com/ava-labs/go-ethereum/ethdb" - "github.com/ava-labs/go-ethereum/event" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/bloombits" + "github.com/ethereum/go-ethereum/eth/downloader" + "github.com/ethereum/go-ethereum/ethdb" + "github.com/ethereum/go-ethereum/event" ) // Backend interface provides the common API services (that are provided by @@ -43,20 +43,25 @@ type Backend interface { ProtocolVersion() int SuggestPrice(ctx context.Context) (*big.Int, error) ChainDb() ethdb.Database - EventMux() *event.TypeMux AccountManager() *accounts.Manager ExtRPCEnabled() bool - RPCGasCap() *big.Int // global gas cap for eth_call over rpc: DoS protection + RPCGasCap() uint64 // global gas cap for eth_call over rpc: DoS protection + RPCTxFeeCap() float64 // global tx fee cap for all transaction related APIs // Blockchain API SetHead(number uint64) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) + HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) + CurrentHeader() *types.Header + CurrentBlock() *types.Block BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) + BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) + StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) - GetTd(hash common.Hash) *big.Int + GetTd(ctx context.Context, hash common.Hash) *big.Int GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription @@ -77,10 +82,11 @@ type Backend interface { GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription + SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription ChainConfig() *params.ChainConfig - CurrentBlock() *types.Block + Engine() consensus.Engine AcceptedBlock() *types.Block } |