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authorDeterminant <[email protected]>2019-08-09 21:15:05 -0400
committerDeterminant <[email protected]>2019-08-09 21:15:05 -0400
commit4c1616a746a648c816042f596eb199174a9858f1 (patch)
tree8db0871957d3a3357ab1ec7bf762ad7481bbd380 /internal
parent6310b748db9fbcea0872db930385760b29f9659c (diff)
add necessary code base
Diffstat (limited to 'internal')
-rw-r--r--internal/ethapi/addrlock.go53
-rw-r--r--internal/ethapi/api.go1767
-rw-r--r--internal/ethapi/backend.go130
3 files changed, 1950 insertions, 0 deletions
diff --git a/internal/ethapi/addrlock.go b/internal/ethapi/addrlock.go
new file mode 100644
index 0000000..61ddff6
--- /dev/null
+++ b/internal/ethapi/addrlock.go
@@ -0,0 +1,53 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package ethapi
+
+import (
+ "sync"
+
+ "github.com/ethereum/go-ethereum/common"
+)
+
+type AddrLocker struct {
+ mu sync.Mutex
+ locks map[common.Address]*sync.Mutex
+}
+
+// lock returns the lock of the given address.
+func (l *AddrLocker) lock(address common.Address) *sync.Mutex {
+ l.mu.Lock()
+ defer l.mu.Unlock()
+ if l.locks == nil {
+ l.locks = make(map[common.Address]*sync.Mutex)
+ }
+ if _, ok := l.locks[address]; !ok {
+ l.locks[address] = new(sync.Mutex)
+ }
+ return l.locks[address]
+}
+
+// LockAddr locks an account's mutex. This is used to prevent another tx getting the
+// same nonce until the lock is released. The mutex prevents the (an identical nonce) from
+// being read again during the time that the first transaction is being signed.
+func (l *AddrLocker) LockAddr(address common.Address) {
+ l.lock(address).Lock()
+}
+
+// UnlockAddr unlocks the mutex of the given account.
+func (l *AddrLocker) UnlockAddr(address common.Address) {
+ l.lock(address).Unlock()
+}
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
new file mode 100644
index 0000000..05204e5
--- /dev/null
+++ b/internal/ethapi/api.go
@@ -0,0 +1,1767 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package ethapi
+
+import (
+ "bytes"
+ "context"
+ "errors"
+ "fmt"
+ "math/big"
+ "strings"
+ "time"
+
+ "github.com/davecgh/go-spew/spew"
+ "github.com/ethereum/go-ethereum/accounts"
+ "github.com/ethereum/go-ethereum/accounts/keystore"
+ "github.com/ethereum/go-ethereum/accounts/scwallet"
+ "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/consensus/clique"
+ "github.com/ethereum/go-ethereum/consensus/ethash"
+ "github.com/ethereum/go-ethereum/core"
+ "github.com/ethereum/go-ethereum/core/rawdb"
+ "github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/core/vm"
+ "github.com/ethereum/go-ethereum/crypto"
+ "github.com/ethereum/go-ethereum/log"
+ "github.com/ethereum/go-ethereum/p2p"
+ "github.com/ethereum/go-ethereum/params"
+ "github.com/ethereum/go-ethereum/rlp"
+ "github.com/ethereum/go-ethereum/rpc"
+ "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 {
+ b Backend
+}
+
+// NewPublicEthereumAPI creates a new Ethereum protocol API.
+func NewPublicEthereumAPI(b Backend) *PublicEthereumAPI {
+ return &PublicEthereumAPI{b}
+}
+
+// GasPrice returns a suggestion for a gas price.
+func (s *PublicEthereumAPI) GasPrice(ctx context.Context) (*hexutil.Big, error) {
+ price, err := s.b.SuggestPrice(ctx)
+ return (*hexutil.Big)(price), err
+}
+
+// ProtocolVersion returns the current Ethereum protocol version this node supports
+func (s *PublicEthereumAPI) ProtocolVersion() hexutil.Uint {
+ return hexutil.Uint(s.b.ProtocolVersion())
+}
+
+// Syncing returns false in case the node is currently not syncing with the network. It can be up to date or has not
+// yet received the latest block headers from its pears. In case it is synchronizing:
+// - startingBlock: block number this node started to synchronise from
+// - currentBlock: block number this node is currently importing
+// - highestBlock: block number of the highest block header this node has received from peers
+// - pulledStates: number of state entries processed until now
+// - knownStates: number of known state entries that still need to be pulled
+func (s *PublicEthereumAPI) Syncing() (interface{}, error) {
+ progress := s.b.Downloader().Progress()
+
+ // Return not syncing if the synchronisation already completed
+ if progress.CurrentBlock >= progress.HighestBlock {
+ return false, nil
+ }
+ // Otherwise gather the block sync stats
+ return map[string]interface{}{
+ "startingBlock": hexutil.Uint64(progress.StartingBlock),
+ "currentBlock": hexutil.Uint64(progress.CurrentBlock),
+ "highestBlock": hexutil.Uint64(progress.HighestBlock),
+ "pulledStates": hexutil.Uint64(progress.PulledStates),
+ "knownStates": hexutil.Uint64(progress.KnownStates),
+ }, nil
+}
+
+// PublicTxPoolAPI offers and API for the transaction pool. It only operates on data that is non confidential.
+type PublicTxPoolAPI struct {
+ b Backend
+}
+
+// NewPublicTxPoolAPI creates a new tx pool service that gives information about the transaction pool.
+func NewPublicTxPoolAPI(b Backend) *PublicTxPoolAPI {
+ return &PublicTxPoolAPI{b}
+}
+
+// Content returns the transactions contained within the transaction pool.
+func (s *PublicTxPoolAPI) Content() map[string]map[string]map[string]*RPCTransaction {
+ content := map[string]map[string]map[string]*RPCTransaction{
+ "pending": make(map[string]map[string]*RPCTransaction),
+ "queued": make(map[string]map[string]*RPCTransaction),
+ }
+ pending, queue := s.b.TxPoolContent()
+
+ // Flatten the pending transactions
+ for account, txs := range pending {
+ dump := make(map[string]*RPCTransaction)
+ for _, tx := range txs {
+ dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx)
+ }
+ content["pending"][account.Hex()] = dump
+ }
+ // Flatten the queued transactions
+ for account, txs := range queue {
+ dump := make(map[string]*RPCTransaction)
+ for _, tx := range txs {
+ dump[fmt.Sprintf("%d", tx.Nonce())] = newRPCPendingTransaction(tx)
+ }
+ content["queued"][account.Hex()] = dump
+ }
+ return content
+}
+
+// Status returns the number of pending and queued transaction in the pool.
+func (s *PublicTxPoolAPI) Status() map[string]hexutil.Uint {
+ pending, queue := s.b.Stats()
+ return map[string]hexutil.Uint{
+ "pending": hexutil.Uint(pending),
+ "queued": hexutil.Uint(queue),
+ }
+}
+
+// Inspect retrieves the content of the transaction pool and flattens it into an
+// easily inspectable list.
+func (s *PublicTxPoolAPI) Inspect() map[string]map[string]map[string]string {
+ content := map[string]map[string]map[string]string{
+ "pending": make(map[string]map[string]string),
+ "queued": make(map[string]map[string]string),
+ }
+ pending, queue := s.b.TxPoolContent()
+
+ // Define a formatter to flatten a transaction into a string
+ var format = func(tx *types.Transaction) string {
+ if to := tx.To(); to != nil {
+ return fmt.Sprintf("%s: %v wei + %v gas × %v wei", tx.To().Hex(), tx.Value(), tx.Gas(), tx.GasPrice())
+ }
+ return fmt.Sprintf("contract creation: %v wei + %v gas × %v wei", tx.Value(), tx.Gas(), tx.GasPrice())
+ }
+ // Flatten the pending transactions
+ for account, txs := range pending {
+ dump := make(map[string]string)
+ for _, tx := range txs {
+ dump[fmt.Sprintf("%d", tx.Nonce())] = format(tx)
+ }
+ content["pending"][account.Hex()] = dump
+ }
+ // Flatten the queued transactions
+ for account, txs := range queue {
+ dump := make(map[string]string)
+ for _, tx := range txs {
+ dump[fmt.Sprintf("%d", tx.Nonce())] = format(tx)
+ }
+ content["queued"][account.Hex()] = dump
+ }
+ return content
+}
+
+// PublicAccountAPI provides an API to access accounts managed by this node.
+// It offers only methods that can retrieve accounts.
+type PublicAccountAPI struct {
+ am *accounts.Manager
+}
+
+// NewPublicAccountAPI creates a new PublicAccountAPI.
+func NewPublicAccountAPI(am *accounts.Manager) *PublicAccountAPI {
+ return &PublicAccountAPI{am: am}
+}
+
+// Accounts returns the collection of accounts this node manages
+func (s *PublicAccountAPI) Accounts() []common.Address {
+ return s.am.Accounts()
+}
+
+// PrivateAccountAPI provides an API to access accounts managed by this node.
+// It offers methods to create, (un)lock en list accounts. Some methods accept
+// passwords and are therefore considered private by default.
+type PrivateAccountAPI struct {
+ am *accounts.Manager
+ nonceLock *AddrLocker
+ b Backend
+}
+
+// NewPrivateAccountAPI create a new PrivateAccountAPI.
+func NewPrivateAccountAPI(b Backend, nonceLock *AddrLocker) *PrivateAccountAPI {
+ return &PrivateAccountAPI{
+ am: b.AccountManager(),
+ nonceLock: nonceLock,
+ b: b,
+ }
+}
+
+// listAccounts will return a list of addresses for accounts this node manages.
+func (s *PrivateAccountAPI) ListAccounts() []common.Address {
+ return s.am.Accounts()
+}
+
+// rawWallet is a JSON representation of an accounts.Wallet interface, with its
+// data contents extracted into plain fields.
+type rawWallet struct {
+ URL string `json:"url"`
+ Status string `json:"status"`
+ Failure string `json:"failure,omitempty"`
+ Accounts []accounts.Account `json:"accounts,omitempty"`
+}
+
+// ListWallets will return a list of wallets this node manages.
+func (s *PrivateAccountAPI) ListWallets() []rawWallet {
+ wallets := make([]rawWallet, 0) // return [] instead of nil if empty
+ for _, wallet := range s.am.Wallets() {
+ status, failure := wallet.Status()
+
+ raw := rawWallet{
+ URL: wallet.URL().String(),
+ Status: status,
+ Accounts: wallet.Accounts(),
+ }
+ if failure != nil {
+ raw.Failure = failure.Error()
+ }
+ wallets = append(wallets, raw)
+ }
+ return wallets
+}
+
+// OpenWallet initiates a hardware wallet opening procedure, establishing a USB
+// connection and attempting to authenticate via the provided passphrase. Note,
+// the method may return an extra challenge requiring a second open (e.g. the
+// Trezor PIN matrix challenge).
+func (s *PrivateAccountAPI) OpenWallet(url string, passphrase *string) error {
+ wallet, err := s.am.Wallet(url)
+ if err != nil {
+ return err
+ }
+ pass := ""
+ if passphrase != nil {
+ pass = *passphrase
+ }
+ return wallet.Open(pass)
+}
+
+// DeriveAccount requests a HD wallet to derive a new account, optionally pinning
+// it for later reuse.
+func (s *PrivateAccountAPI) DeriveAccount(url string, path string, pin *bool) (accounts.Account, error) {
+ wallet, err := s.am.Wallet(url)
+ if err != nil {
+ return accounts.Account{}, err
+ }
+ derivPath, err := accounts.ParseDerivationPath(path)
+ if err != nil {
+ return accounts.Account{}, err
+ }
+ if pin == nil {
+ pin = new(bool)
+ }
+ return wallet.Derive(derivPath, *pin)
+}
+
+// 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)
+ if err == nil {
+ log.Info("Your new key was generated", "address", acc.Address)
+ log.Warn("Please backup your key file!", "path", acc.URL.Path)
+ log.Warn("Please remember your password!")
+ return acc.Address, nil
+ }
+ 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)
+}
+
+// ImportRawKey stores the given hex encoded ECDSA key into the key directory,
+// encrypting it with the passphrase.
+func (s *PrivateAccountAPI) ImportRawKey(privkey string, password string) (common.Address, error) {
+ key, err := crypto.HexToECDSA(privkey)
+ if err != nil {
+ return common.Address{}, err
+ }
+ acc, err := fetchKeystore(s.am).ImportECDSA(key, password)
+ return acc.Address, err
+}
+
+// UnlockAccount will unlock the account associated with the given address with
+// the given password for duration seconds. If duration is nil it will use a
+// default of 300 seconds. It returns an indication if the account was unlocked.
+func (s *PrivateAccountAPI) UnlockAccount(ctx context.Context, addr common.Address, password string, duration *uint64) (bool, error) {
+ // When the API is exposed by external RPC(http, ws etc), unless the user
+ // explicitly specifies to allow the insecure account unlocking, otherwise
+ // it is disabled.
+ if s.b.ExtRPCEnabled() && !s.b.AccountManager().Config().InsecureUnlockAllowed {
+ return false, errors.New("account unlock with HTTP access is forbidden")
+ }
+
+ const max = uint64(time.Duration(math.MaxInt64) / time.Second)
+ var d time.Duration
+ if duration == nil {
+ d = 300 * time.Second
+ } else if *duration > max {
+ return false, errors.New("unlock duration too large")
+ } else {
+ d = time.Duration(*duration) * time.Second
+ }
+ err := fetchKeystore(s.am).TimedUnlock(accounts.Account{Address: addr}, password, d)
+ if err != nil {
+ log.Warn("Failed account unlock attempt", "address", addr, "err", err)
+ }
+ return err == nil, err
+}
+
+// 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
+}
+
+// signTransaction sets defaults and signs the given transaction
+// NOTE: the caller needs to ensure that the nonceLock is held, if applicable,
+// and release it after the transaction has been submitted to the tx pool
+func (s *PrivateAccountAPI) signTransaction(ctx context.Context, args *SendTxArgs, passwd string) (*types.Transaction, error) {
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: args.From}
+ wallet, err := s.am.Find(account)
+ if err != nil {
+ return nil, err
+ }
+ // Set some sanity defaults and terminate on failure
+ if err := args.setDefaults(ctx, s.b); err != nil {
+ return nil, err
+ }
+ // Assemble the transaction and sign with the wallet
+ tx := args.toTransaction()
+
+ return wallet.SignTxWithPassphrase(account, passwd, tx, s.b.ChainConfig().ChainID)
+}
+
+// SendTransaction will create a transaction from the given arguments and
+// tries to sign it with the key associated with args.To. If the given passwd isn't
+// able to decrypt the key it fails.
+func (s *PrivateAccountAPI) SendTransaction(ctx context.Context, args SendTxArgs, passwd string) (common.Hash, error) {
+ if args.Nonce == nil {
+ // Hold the addresse's mutex around signing to prevent concurrent assignment of
+ // the same nonce to multiple accounts.
+ s.nonceLock.LockAddr(args.From)
+ defer s.nonceLock.UnlockAddr(args.From)
+ }
+ signed, err := s.signTransaction(ctx, &args, passwd)
+ if err != nil {
+ log.Warn("Failed transaction send attempt", "from", args.From, "to", args.To, "value", args.Value.ToInt(), "err", err)
+ return common.Hash{}, err
+ }
+ return SubmitTransaction(ctx, s.b, signed)
+}
+
+// SignTransaction will create a transaction from the given arguments and
+// tries to sign it with the key associated with args.To. If the given passwd isn't
+// able to decrypt the key it fails. The transaction is returned in RLP-form, not broadcast
+// to other nodes
+func (s *PrivateAccountAPI) SignTransaction(ctx context.Context, args SendTxArgs, passwd string) (*SignTransactionResult, error) {
+ // No need to obtain the noncelock mutex, since we won't be sending this
+ // tx into the transaction pool, but right back to the user
+ if args.Gas == nil {
+ return nil, fmt.Errorf("gas not specified")
+ }
+ if args.GasPrice == nil {
+ return nil, fmt.Errorf("gasPrice not specified")
+ }
+ if args.Nonce == nil {
+ return nil, fmt.Errorf("nonce not specified")
+ }
+ 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)
+ return nil, err
+ }
+ data, err := rlp.EncodeToBytes(signed)
+ if err != nil {
+ return nil, err
+ }
+ return &SignTransactionResult{data, signed}, nil
+}
+
+// Sign calculates an Ethereum ECDSA signature for:
+// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message))
+//
+// Note, the produced signature conforms to the secp256k1 curve R, S and V values,
+// where the V value will be 27 or 28 for legacy reasons.
+//
+// The key used to calculate the signature is decrypted with the given password.
+//
+// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign
+func (s *PrivateAccountAPI) Sign(ctx context.Context, data hexutil.Bytes, addr common.Address, passwd string) (hexutil.Bytes, error) {
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: addr}
+
+ wallet, err := s.b.AccountManager().Find(account)
+ if err != nil {
+ return nil, err
+ }
+ // Assemble sign the data with the wallet
+ signature, err := wallet.SignTextWithPassphrase(account, passwd, data)
+ if err != nil {
+ log.Warn("Failed data sign attempt", "address", addr, "err", err)
+ return nil, err
+ }
+ signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
+ return signature, nil
+}
+
+// EcRecover returns the address for the account that was used to create the signature.
+// Note, this function is compatible with eth_sign and personal_sign. As such it recovers
+// the address of:
+// hash = keccak256("\x19Ethereum Signed Message:\n"${message length}${message})
+// addr = ecrecover(hash, signature)
+//
+// Note, the signature must conform to the secp256k1 curve R, S and V values, where
+// the V value must be 27 or 28 for legacy reasons.
+//
+// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecover
+func (s *PrivateAccountAPI) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) {
+ if len(sig) != 65 {
+ return common.Address{}, fmt.Errorf("signature must be 65 bytes long")
+ }
+ if sig[64] != 27 && sig[64] != 28 {
+ return common.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)")
+ }
+ sig[64] -= 27 // Transform yellow paper V from 27/28 to 0/1
+
+ rpk, err := crypto.SigToPub(accounts.TextHash(data), sig)
+ if err != nil {
+ return common.Address{}, err
+ }
+ return crypto.PubkeyToAddress(*rpk), nil
+}
+
+// SignAndSendTransaction was renamed to SendTransaction. This method is deprecated
+// and will be removed in the future. It primary goal is to give clients time to update.
+func (s *PrivateAccountAPI) SignAndSendTransaction(ctx context.Context, args SendTxArgs, passwd string) (common.Hash, error) {
+ return s.SendTransaction(ctx, args, passwd)
+}
+
+// InitializeWallet initializes a new wallet at the provided URL, by generating and returning a new private key.
+func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (string, error) {
+ wallet, err := s.am.Wallet(url)
+ if err != nil {
+ return "", err
+ }
+
+ entropy, err := bip39.NewEntropy(256)
+ if err != nil {
+ return "", err
+ }
+
+ mnemonic, err := bip39.NewMnemonic(entropy)
+ if err != nil {
+ return "", err
+ }
+
+ seed := bip39.NewSeed(mnemonic, "")
+
+ switch wallet := wallet.(type) {
+ case *scwallet.Wallet:
+ return mnemonic, wallet.Initialize(seed)
+ default:
+ return "", fmt.Errorf("Specified wallet does not support initialization")
+ }
+}
+
+// Unpair deletes a pairing between wallet and geth.
+func (s *PrivateAccountAPI) Unpair(ctx context.Context, url string, pin string) error {
+ wallet, err := s.am.Wallet(url)
+ if err != nil {
+ return err
+ }
+
+ switch wallet := wallet.(type) {
+ case *scwallet.Wallet:
+ return wallet.Unpair([]byte(pin))
+ default:
+ return fmt.Errorf("Specified wallet does not support pairing")
+ }
+}
+
+// PublicBlockChainAPI provides an API to access the Ethereum blockchain.
+// It offers only methods that operate on public data that is freely available to anyone.
+type PublicBlockChainAPI struct {
+ b Backend
+}
+
+// NewPublicBlockChainAPI creates a new Ethereum blockchain API.
+func NewPublicBlockChainAPI(b Backend) *PublicBlockChainAPI {
+ return &PublicBlockChainAPI{b}
+}
+
+// ChainId returns the chainID value for transaction replay protection.
+func (s *PublicBlockChainAPI) ChainId() *hexutil.Big {
+ return (*hexutil.Big)(s.b.ChainConfig().ChainID)
+}
+
+// BlockNumber returns the block number of the chain head.
+func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 {
+ header, _ := s.b.HeaderByNumber(context.Background(), rpc.LatestBlockNumber) // latest header should always be available
+ return hexutil.Uint64(header.Number.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)
+ if state == nil || err != nil {
+ return nil, err
+ }
+ return (*hexutil.Big)(state.GetBalance(address)), state.Error()
+}
+
+// Result structs for GetProof
+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"`
+}
+type StorageResult struct {
+ Key string `json:"key"`
+ Value *hexutil.Big `json:"value"`
+ Proof []string `json:"proof"`
+}
+
+// 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)
+ if state == nil || err != nil {
+ return nil, err
+ }
+
+ storageTrie := state.StorageTrie(address)
+ storageHash := types.EmptyRootHash
+ codeHash := state.GetCodeHash(address)
+ storageProof := make([]StorageResult, len(storageKeys))
+
+ // if we have a storageTrie, (which means the account exists), we can update the storagehash
+ if storageTrie != nil {
+ storageHash = storageTrie.Hash()
+ } else {
+ // no storageTrie means the account does not exist, so the codeHash is the hash of an empty bytearray.
+ codeHash = crypto.Keccak256Hash(nil)
+ }
+
+ // create the proof for the storageKeys
+ for i, key := range storageKeys {
+ if storageTrie != nil {
+ proof, storageError := state.GetStorageProof(address, common.HexToHash(key))
+ if storageError != nil {
+ return nil, storageError
+ }
+ storageProof[i] = StorageResult{key, (*hexutil.Big)(state.GetState(address, common.HexToHash(key)).Big()), common.ToHexArray(proof)}
+ } else {
+ storageProof[i] = StorageResult{key, &hexutil.Big{}, []string{}}
+ }
+ }
+
+ // create the accountProof
+ accountProof, proofErr := state.GetProof(address)
+ if proofErr != nil {
+ return nil, proofErr
+ }
+
+ return &AccountResult{
+ Address: address,
+ AccountProof: common.ToHexArray(accountProof),
+ Balance: (*hexutil.Big)(state.GetBalance(address)),
+ CodeHash: codeHash,
+ Nonce: hexutil.Uint64(state.GetNonce(address)),
+ StorageHash: storageHash,
+ StorageProof: storageProof,
+ }, state.Error()
+}
+
+// GetHeaderByNumber returns the requested canonical block header.
+// * When blockNr is -1 the chain head is returned.
+// * When blockNr is -2 the pending chain head is returned.
+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)
+ if number == rpc.PendingBlockNumber {
+ // Pending header need to nil out a few fields
+ for _, field := range []string{"hash", "nonce", "miner"} {
+ response[field] = nil
+ }
+ }
+ return response, err
+ }
+ return nil, err
+}
+
+// GetHeaderByHash returns the requested header by hash.
+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 nil
+}
+
+// GetBlockByNumber returns the requested canonical block.
+// * When blockNr is -1 the chain head is returned.
+// * When blockNr is -2 the pending chain head is returned.
+// * When fullTx is true all transactions in the block are returned, otherwise
+// only the transaction hash is returned.
+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)
+ if err == nil && number == rpc.PendingBlockNumber {
+ // Pending blocks need to nil out a few fields
+ for _, field := range []string{"hash", "nonce", "miner"} {
+ response[field] = nil
+ }
+ }
+ return response, err
+ }
+ return nil, err
+}
+
+// GetBlockByHash returns the requested block. When fullTx is true all transactions in the block are returned in full
+// detail, otherwise only the transaction hash is returned.
+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 nil, err
+}
+
+// GetUncleByBlockNumberAndIndex returns the uncle block for the given block hash and index. When fullTx is true
+// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
+func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) (map[string]interface{}, error) {
+ block, err := s.b.BlockByNumber(ctx, blockNr)
+ if block != nil {
+ uncles := block.Uncles()
+ if index >= hexutil.Uint(len(uncles)) {
+ log.Debug("Requested uncle not found", "number", blockNr, "hash", block.Hash(), "index", index)
+ return nil, nil
+ }
+ block = types.NewBlockWithHeader(uncles[index])
+ return s.rpcMarshalBlock(block, false, false)
+ }
+ return nil, err
+}
+
+// GetUncleByBlockHashAndIndex returns the uncle block for the given block hash and index. When fullTx is true
+// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
+func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) (map[string]interface{}, error) {
+ block, err := s.b.BlockByHash(ctx, blockHash)
+ if block != nil {
+ uncles := block.Uncles()
+ if index >= hexutil.Uint(len(uncles)) {
+ log.Debug("Requested uncle not found", "number", block.Number(), "hash", blockHash, "index", index)
+ return nil, nil
+ }
+ block = types.NewBlockWithHeader(uncles[index])
+ return s.rpcMarshalBlock(block, false, false)
+ }
+ return nil, err
+}
+
+// GetUncleCountByBlockNumber returns number of uncles in the block for the given block number
+func (s *PublicBlockChainAPI) GetUncleCountByBlockNumber(ctx context.Context, blockNr rpc.BlockNumber) *hexutil.Uint {
+ if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil {
+ n := hexutil.Uint(len(block.Uncles()))
+ return &n
+ }
+ return nil
+}
+
+// GetUncleCountByBlockHash returns number of uncles in the block for the given block hash
+func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(ctx context.Context, blockHash common.Hash) *hexutil.Uint {
+ if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil {
+ n := hexutil.Uint(len(block.Uncles()))
+ return &n
+ }
+ return nil
+}
+
+// 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)
+ if state == nil || err != nil {
+ return nil, err
+ }
+ code := state.GetCode(address)
+ return code, state.Error()
+}
+
+// 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)
+ if state == nil || err != nil {
+ return nil, err
+ }
+ res := state.GetState(address, common.HexToHash(key))
+ return res[:], state.Error()
+}
+
+// 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"`
+}
+
+// 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"`
+}
+
+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) {
+ defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now())
+
+ state, header, err := b.StateAndHeaderByNumber(ctx, blockNr)
+ 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
+ }
+ // Override the fields of specified contracts before execution.
+ for addr, account := range overrides {
+ // Override account nonce.
+ if account.Nonce != nil {
+ state.SetNonce(addr, uint64(*account.Nonce))
+ }
+ // Override account(contract) code.
+ if account.Code != nil {
+ state.SetCode(addr, *account.Code)
+ }
+ // Override account balance.
+ if account.Balance != nil {
+ 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())
+ }
+ // Replace entire state if caller requires.
+ if account.State != nil {
+ state.SetStorage(addr, *account.State)
+ }
+ // Apply state diff into specified accounts.
+ if account.StateDiff != nil {
+ for key, value := range *account.StateDiff {
+ state.SetState(addr, key, value)
+ }
+ }
+ }
+ // 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
+ if timeout > 0 {
+ ctx, cancel = context.WithTimeout(ctx, timeout)
+ } else {
+ ctx, cancel = context.WithCancel(ctx)
+ }
+ // Make sure the context is cancelled when the call has completed
+ // this makes sure resources are cleaned up.
+ defer cancel()
+
+ // Get a new instance of the EVM.
+ evm, vmError, err := b.GetEVM(ctx, msg, state, header)
+ if err != nil {
+ return nil, 0, false, err
+ }
+ // Wait for the context to be done and cancel the evm. Even if the
+ // EVM has finished, cancelling may be done (repeatedly)
+ go func() {
+ <-ctx.Done()
+ evm.Cancel()
+ }()
+
+ // 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)
+ if err := vmError(); err != nil {
+ return nil, 0, false, 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 res, gas, failed, err
+}
+
+// Call executes the given transaction on the state for the given block number.
+//
+// Additionally, the caller can specify a batch of contract for fields overriding.
+//
+// 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) {
+ 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
+}
+
+func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, gasCap *big.Int) (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
+ )
+ 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)
+ if err != nil {
+ return 0, err
+ }
+ hi = block.GasLimit()
+ }
+ if gasCap != nil && hi > gasCap.Uint64() {
+ log.Warn("Caller gas above allowance, capping", "requested", hi, "cap", gasCap)
+ hi = gasCap.Uint64()
+ }
+ cap = hi
+
+ // Create a helper to check if a gas allowance results in an executable transaction
+ executable := func(gas uint64) bool {
+ args.Gas = (*hexutil.Uint64)(&gas)
+
+ _, _, failed, err := DoCall(ctx, b, args, rpc.PendingBlockNumber, nil, vm.Config{}, 0, gasCap)
+ if err != nil || failed {
+ return false
+ }
+ return true
+ }
+ // Execute the binary search and hone in on an executable gas limit
+ for lo+1 < hi {
+ mid := (hi + lo) / 2
+ if !executable(mid) {
+ lo = mid
+ } else {
+ hi = mid
+ }
+ }
+ // 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)
+ }
+ }
+ return hexutil.Uint64(hi), nil
+}
+
+// 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())
+}
+
+// ExecutionResult groups all structured logs emitted by the EVM
+// while replaying a transaction in debug mode as well as transaction
+// execution status, the amount of gas used and the return value
+type ExecutionResult struct {
+ Gas uint64 `json:"gas"`
+ Failed bool `json:"failed"`
+ ReturnValue string `json:"returnValue"`
+ StructLogs []StructLogRes `json:"structLogs"`
+}
+
+// StructLogRes stores a structured log emitted by the EVM while replaying a
+// transaction in debug mode
+type StructLogRes struct {
+ Pc uint64 `json:"pc"`
+ Op string `json:"op"`
+ Gas uint64 `json:"gas"`
+ GasCost uint64 `json:"gasCost"`
+ Depth int `json:"depth"`
+ Error error `json:"error,omitempty"`
+ Stack *[]string `json:"stack,omitempty"`
+ Memory *[]string `json:"memory,omitempty"`
+ Storage *map[string]string `json:"storage,omitempty"`
+}
+
+// FormatLogs formats EVM returned structured logs for json output
+func FormatLogs(logs []vm.StructLog) []StructLogRes {
+ formatted := make([]StructLogRes, len(logs))
+ for index, trace := range logs {
+ formatted[index] = StructLogRes{
+ Pc: trace.Pc,
+ Op: trace.Op.String(),
+ Gas: trace.Gas,
+ GasCost: trace.GasCost,
+ Depth: trace.Depth,
+ Error: trace.Err,
+ }
+ if trace.Stack != nil {
+ stack := make([]string, len(trace.Stack))
+ for i, stackValue := range trace.Stack {
+ stack[i] = fmt.Sprintf("%x", math.PaddedBigBytes(stackValue, 32))
+ }
+ formatted[index].Stack = &stack
+ }
+ if trace.Memory != nil {
+ memory := make([]string, 0, (len(trace.Memory)+31)/32)
+ for i := 0; i+32 <= len(trace.Memory); i += 32 {
+ memory = append(memory, fmt.Sprintf("%x", trace.Memory[i:i+32]))
+ }
+ formatted[index].Memory = &memory
+ }
+ if trace.Storage != nil {
+ storage := make(map[string]string)
+ for i, storageValue := range trace.Storage {
+ storage[fmt.Sprintf("%x", i)] = fmt.Sprintf("%x", storageValue)
+ }
+ formatted[index].Storage = &storage
+ }
+ }
+ return formatted
+}
+
+// RPCMarshalHeader converts the given header to the RPC output .
+func RPCMarshalHeader(head *types.Header) map[string]interface{} {
+ return map[string]interface{}{
+ "number": (*hexutil.Big)(head.Number),
+ "hash": head.Hash(),
+ "parentHash": head.ParentHash,
+ "nonce": head.Nonce,
+ "mixHash": head.MixDigest,
+ "sha3Uncles": head.UncleHash,
+ "logsBloom": head.Bloom,
+ "stateRoot": head.Root,
+ "miner": head.Coinbase,
+ "difficulty": (*hexutil.Big)(head.Difficulty),
+ "extraData": hexutil.Bytes(head.Extra),
+ "size": hexutil.Uint64(head.Size()),
+ "gasLimit": hexutil.Uint64(head.GasLimit),
+ "gasUsed": hexutil.Uint64(head.GasUsed),
+ "timestamp": hexutil.Uint64(head.Time),
+ "transactionsRoot": head.TxHash,
+ "receiptsRoot": head.ReceiptHash,
+ }
+}
+
+// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
+// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
+// transaction hashes.
+func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
+ fields := RPCMarshalHeader(block.Header())
+ fields["size"] = hexutil.Uint64(block.Size())
+
+ if inclTx {
+ formatTx := func(tx *types.Transaction) (interface{}, error) {
+ return tx.Hash(), nil
+ }
+ if fullTx {
+ formatTx = func(tx *types.Transaction) (interface{}, error) {
+ return newRPCTransactionFromBlockHash(block, tx.Hash()), nil
+ }
+ }
+ txs := block.Transactions()
+ transactions := make([]interface{}, len(txs))
+ var err error
+ for i, tx := range txs {
+ if transactions[i], err = formatTx(tx); err != nil {
+ return nil, err
+ }
+ }
+ fields["transactions"] = transactions
+ }
+ uncles := block.Uncles()
+ uncleHashes := make([]common.Hash, len(uncles))
+ for i, uncle := range uncles {
+ uncleHashes[i] = uncle.Hash()
+ }
+ fields["uncles"] = uncleHashes
+
+ return fields, nil
+}
+
+// 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{} {
+ fields := RPCMarshalHeader(header)
+ fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(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) {
+ fields, err := RPCMarshalBlock(b, inclTx, fullTx)
+ if err != nil {
+ return nil, err
+ }
+ fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(b.Hash()))
+ return fields, err
+}
+
+// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction
+type RPCTransaction 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"`
+}
+
+// newRPCTransaction returns a transaction that will serialize to the RPC
+// representation, with the given location metadata set (if available).
+func newRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64) *RPCTransaction {
+ var signer types.Signer = types.FrontierSigner{}
+ if tx.Protected() {
+ signer = types.NewEIP155Signer(tx.ChainId())
+ }
+ from, _ := types.Sender(signer, tx)
+ v, r, s := tx.RawSignatureValues()
+
+ result := &RPCTransaction{
+ From: from,
+ Gas: hexutil.Uint64(tx.Gas()),
+ GasPrice: (*hexutil.Big)(tx.GasPrice()),
+ Hash: tx.Hash(),
+ Input: hexutil.Bytes(tx.Data()),
+ Nonce: hexutil.Uint64(tx.Nonce()),
+ To: tx.To(),
+ Value: (*hexutil.Big)(tx.Value()),
+ V: (*hexutil.Big)(v),
+ R: (*hexutil.Big)(r),
+ S: (*hexutil.Big)(s),
+ }
+ if blockHash != (common.Hash{}) {
+ result.BlockHash = &blockHash
+ result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
+ result.TransactionIndex = (*hexutil.Uint64)(&index)
+ }
+ return result
+}
+
+// newRPCPendingTransaction returns a pending transaction that will serialize to the RPC representation
+func newRPCPendingTransaction(tx *types.Transaction) *RPCTransaction {
+ return newRPCTransaction(tx, common.Hash{}, 0, 0)
+}
+
+// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation.
+func newRPCTransactionFromBlockIndex(b *types.Block, index uint64) *RPCTransaction {
+ txs := b.Transactions()
+ if index >= uint64(len(txs)) {
+ return nil
+ }
+ return newRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index)
+}
+
+// newRPCRawTransactionFromBlockIndex returns the bytes of a transaction given a block and a transaction index.
+func newRPCRawTransactionFromBlockIndex(b *types.Block, index uint64) hexutil.Bytes {
+ txs := b.Transactions()
+ if index >= uint64(len(txs)) {
+ return nil
+ }
+ blob, _ := rlp.EncodeToBytes(txs[index])
+ return blob
+}
+
+// newRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation.
+func newRPCTransactionFromBlockHash(b *types.Block, hash common.Hash) *RPCTransaction {
+ for idx, tx := range b.Transactions() {
+ if tx.Hash() == hash {
+ return newRPCTransactionFromBlockIndex(b, uint64(idx))
+ }
+ }
+ return nil
+}
+
+// PublicTransactionPoolAPI exposes methods for the RPC interface
+type PublicTransactionPoolAPI struct {
+ b Backend
+ nonceLock *AddrLocker
+}
+
+// NewPublicTransactionPoolAPI creates a new RPC service with methods specific for the transaction pool.
+func NewPublicTransactionPoolAPI(b Backend, nonceLock *AddrLocker) *PublicTransactionPoolAPI {
+ return &PublicTransactionPoolAPI{b, nonceLock}
+}
+
+// GetBlockTransactionCountByNumber returns the number of transactions in the block with the given block number.
+func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByNumber(ctx context.Context, blockNr rpc.BlockNumber) *hexutil.Uint {
+ if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil {
+ n := hexutil.Uint(len(block.Transactions()))
+ return &n
+ }
+ return nil
+}
+
+// GetBlockTransactionCountByHash returns the number of transactions in the block with the given hash.
+func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByHash(ctx context.Context, blockHash common.Hash) *hexutil.Uint {
+ if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil {
+ n := hexutil.Uint(len(block.Transactions()))
+ return &n
+ }
+ return nil
+}
+
+// GetTransactionByBlockNumberAndIndex returns the transaction for the given block number and index.
+func (s *PublicTransactionPoolAPI) GetTransactionByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) *RPCTransaction {
+ if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil {
+ return newRPCTransactionFromBlockIndex(block, uint64(index))
+ }
+ return nil
+}
+
+// GetTransactionByBlockHashAndIndex returns the transaction for the given block hash and index.
+func (s *PublicTransactionPoolAPI) GetTransactionByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) *RPCTransaction {
+ if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil {
+ return newRPCTransactionFromBlockIndex(block, uint64(index))
+ }
+ return nil
+}
+
+// GetRawTransactionByBlockNumberAndIndex returns the bytes of the transaction for the given block number and index.
+func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, index hexutil.Uint) hexutil.Bytes {
+ if block, _ := s.b.BlockByNumber(ctx, blockNr); block != nil {
+ return newRPCRawTransactionFromBlockIndex(block, uint64(index))
+ }
+ return nil
+}
+
+// GetRawTransactionByBlockHashAndIndex returns the bytes of the transaction for the given block hash and index.
+func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, index hexutil.Uint) hexutil.Bytes {
+ if block, _ := s.b.BlockByHash(ctx, blockHash); block != nil {
+ return newRPCRawTransactionFromBlockIndex(block, uint64(index))
+ }
+ return nil
+}
+
+// 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) {
+ // Ask transaction pool for the nonce which includes pending transactions
+ if blockNr == rpc.PendingBlockNumber {
+ nonce, err := s.b.GetPoolNonce(ctx, address)
+ if err != nil {
+ return nil, err
+ }
+ return (*hexutil.Uint64)(&nonce), nil
+ }
+ // Resolve block number and use its state to ask for the nonce
+ state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
+ if state == nil || err != nil {
+ return nil, err
+ }
+ nonce := state.GetNonce(address)
+ return (*hexutil.Uint64)(&nonce), state.Error()
+}
+
+// GetTransactionByHash returns the transaction for the given hash
+func (s *PublicTransactionPoolAPI) GetTransactionByHash(ctx context.Context, hash common.Hash) (*RPCTransaction, error) {
+ // Try to return an already finalized transaction
+ tx, blockHash, blockNumber, index, err := s.b.GetTransaction(ctx, hash)
+ if err != nil {
+ return nil, err
+ }
+ if tx != nil {
+ return newRPCTransaction(tx, blockHash, blockNumber, index), nil
+ }
+ // No finalized transaction, try to retrieve it from the pool
+ if tx := s.b.GetPoolTransaction(hash); tx != nil {
+ return newRPCPendingTransaction(tx), nil
+ }
+
+ // Transaction unknown, return as such
+ return nil, nil
+}
+
+// GetRawTransactionByHash returns the bytes of the transaction for the given hash.
+func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) {
+ // Retrieve a finalized transaction, or a pooled otherwise
+ tx, _, _, _, err := s.b.GetTransaction(ctx, hash)
+ if err != nil {
+ return nil, err
+ }
+ if tx == nil {
+ if tx = s.b.GetPoolTransaction(hash); tx == nil {
+ // Transaction not found anywhere, abort
+ return nil, nil
+ }
+ }
+ // Serialize to RLP and return
+ return rlp.EncodeToBytes(tx)
+}
+
+// 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 {
+ return nil, nil
+ }
+ receipts, err := s.b.GetReceipts(ctx, blockHash)
+ if err != nil {
+ return nil, err
+ }
+ if len(receipts) <= int(index) {
+ return nil, nil
+ }
+ receipt := receipts[index]
+
+ var signer types.Signer = types.FrontierSigner{}
+ if tx.Protected() {
+ signer = types.NewEIP155Signer(tx.ChainId())
+ }
+ from, _ := types.Sender(signer, tx)
+
+ fields := map[string]interface{}{
+ "blockHash": blockHash,
+ "blockNumber": hexutil.Uint64(blockNumber),
+ "transactionHash": hash,
+ "transactionIndex": hexutil.Uint64(index),
+ "from": from,
+ "to": tx.To(),
+ "gasUsed": hexutil.Uint64(receipt.GasUsed),
+ "cumulativeGasUsed": hexutil.Uint64(receipt.CumulativeGasUsed),
+ "contractAddress": nil,
+ "logs": receipt.Logs,
+ "logsBloom": receipt.Bloom,
+ }
+
+ // Assign receipt status or post state.
+ if len(receipt.PostState) > 0 {
+ fields["root"] = hexutil.Bytes(receipt.PostState)
+ } else {
+ fields["status"] = hexutil.Uint(receipt.Status)
+ }
+ if receipt.Logs == nil {
+ fields["logs"] = [][]*types.Log{}
+ }
+ // If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
+ if receipt.ContractAddress != (common.Address{}) {
+ fields["contractAddress"] = receipt.ContractAddress
+ }
+ return fields, nil
+}
+
+// sign is a helper function that signs a transaction with the private key of the given address.
+func (s *PublicTransactionPoolAPI) sign(addr common.Address, tx *types.Transaction) (*types.Transaction, error) {
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: addr}
+
+ wallet, err := s.b.AccountManager().Find(account)
+ if err != nil {
+ return nil, err
+ }
+ // Request the wallet to sign the transaction
+ return wallet.SignTx(account, tx, s.b.ChainConfig().ChainID)
+}
+
+// SendTxArgs represents the arguments to sumbit a new transaction into the transaction pool.
+type SendTxArgs 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"`
+ Nonce *hexutil.Uint64 `json:"nonce"`
+ // We accept "data" and "input" for backwards-compatibility reasons. "input" is the
+ // newer name and should be preferred by clients.
+ Data *hexutil.Bytes `json:"data"`
+ Input *hexutil.Bytes `json:"input"`
+}
+
+// setDefaults is a helper function that fills in default values for unspecified tx fields.
+func (args *SendTxArgs) setDefaults(ctx context.Context, b Backend) error {
+ if args.GasPrice == nil {
+ price, err := b.SuggestPrice(ctx)
+ if err != nil {
+ return err
+ }
+ args.GasPrice = (*hexutil.Big)(price)
+ }
+ if args.Value == nil {
+ args.Value = new(hexutil.Big)
+ }
+ if args.Nonce == nil {
+ nonce, err := b.GetPoolNonce(ctx, args.From)
+ if err != nil {
+ return err
+ }
+ 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.`)
+ }
+ 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 errors.New(`contract creation without any data provided`)
+ }
+ }
+ // Estimate the gas usage if necessary.
+ 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 := CallArgs{
+ From: &args.From, // From shouldn't be nil
+ To: args.To,
+ GasPrice: args.GasPrice,
+ Value: args.Value,
+ Data: input,
+ }
+ estimated, err := DoEstimateGas(ctx, b, callArgs, rpc.PendingBlockNumber, b.RPCGasCap())
+ if err != nil {
+ return err
+ }
+ args.Gas = &estimated
+ log.Trace("Estimate gas usage automatically", "gas", args.Gas)
+ }
+ return nil
+}
+
+func (args *SendTxArgs) toTransaction() *types.Transaction {
+ var input []byte
+ if args.Input != nil {
+ input = *args.Input
+ } else if args.Data != nil {
+ input = *args.Data
+ }
+ if args.To == nil {
+ return types.NewContractCreation(uint64(*args.Nonce), (*big.Int)(args.Value), uint64(*args.Gas), (*big.Int)(args.GasPrice), input)
+ }
+ return types.NewTransaction(uint64(*args.Nonce), *args.To, (*big.Int)(args.Value), uint64(*args.Gas), (*big.Int)(args.GasPrice), input)
+}
+
+// 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 err := b.SendTx(ctx, tx); err != nil {
+ return common.Hash{}, err
+ }
+ if tx.To() == nil {
+ signer := types.MakeSigner(b.ChainConfig(), b.CurrentBlock().Number())
+ from, err := types.Sender(signer, tx)
+ if err != nil {
+ return common.Hash{}, err
+ }
+ addr := crypto.CreateAddress(from, tx.Nonce())
+ log.Info("Submitted contract creation", "fullhash", tx.Hash().Hex(), "contract", addr.Hex())
+ } else {
+ log.Info("Submitted transaction", "fullhash", tx.Hash().Hex(), "recipient", tx.To())
+ }
+ return tx.Hash(), nil
+}
+
+// SendTransaction creates a transaction for the given argument, sign it and submit it to the
+// transaction pool.
+func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args SendTxArgs) (common.Hash, error) {
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: args.From}
+
+ wallet, err := s.b.AccountManager().Find(account)
+ if err != nil {
+ return common.Hash{}, err
+ }
+
+ if args.Nonce == nil {
+ // Hold the addresse's mutex around signing to prevent concurrent assignment of
+ // the same nonce to multiple accounts.
+ s.nonceLock.LockAddr(args.From)
+ defer s.nonceLock.UnlockAddr(args.From)
+ }
+
+ // Set some sanity defaults and terminate on failure
+ if err := args.setDefaults(ctx, s.b); err != nil {
+ return common.Hash{}, err
+ }
+ // Assemble the transaction and sign with the wallet
+ tx := args.toTransaction()
+
+ signed, err := wallet.SignTx(account, tx, s.b.ChainConfig().ChainID)
+ if err != nil {
+ return common.Hash{}, err
+ }
+ return SubmitTransaction(ctx, s.b, signed)
+}
+
+// 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) {
+ tx := new(types.Transaction)
+ if err := rlp.DecodeBytes(encodedTx, tx); err != nil {
+ return common.Hash{}, err
+ }
+ return SubmitTransaction(ctx, s.b, tx)
+}
+
+// Sign calculates an ECDSA signature for:
+// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message).
+//
+// Note, the produced signature conforms to the secp256k1 curve R, S and V values,
+// where the V value will be 27 or 28 for legacy reasons.
+//
+// The account associated with addr must be unlocked.
+//
+// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign
+func (s *PublicTransactionPoolAPI) Sign(addr common.Address, data hexutil.Bytes) (hexutil.Bytes, error) {
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: addr}
+
+ wallet, err := s.b.AccountManager().Find(account)
+ if err != nil {
+ return nil, err
+ }
+ // Sign the requested hash with the wallet
+ signature, err := wallet.SignText(account, data)
+ if err == nil {
+ signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
+ }
+ return signature, err
+}
+
+// SignTransactionResult represents a RLP encoded signed transaction.
+type SignTransactionResult struct {
+ Raw hexutil.Bytes `json:"raw"`
+ Tx *types.Transaction `json:"tx"`
+}
+
+// SignTransaction will sign the given transaction with the from account.
+// The node needs to have the private key of the account corresponding with
+// the given from address and it needs to be unlocked.
+func (s *PublicTransactionPoolAPI) SignTransaction(ctx context.Context, args SendTxArgs) (*SignTransactionResult, error) {
+ if args.Gas == nil {
+ return nil, fmt.Errorf("gas not specified")
+ }
+ if args.GasPrice == nil {
+ return nil, fmt.Errorf("gasPrice not specified")
+ }
+ if args.Nonce == nil {
+ return nil, fmt.Errorf("nonce not specified")
+ }
+ if err := args.setDefaults(ctx, s.b); err != nil {
+ return nil, err
+ }
+ tx, err := s.sign(args.From, args.toTransaction())
+ if err != nil {
+ return nil, err
+ }
+ data, err := rlp.EncodeToBytes(tx)
+ if err != nil {
+ return nil, err
+ }
+ return &SignTransactionResult{data, tx}, 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 (s *PublicTransactionPoolAPI) PendingTransactions() ([]*RPCTransaction, error) {
+ pending, err := s.b.GetPoolTransactions()
+ if err != nil {
+ return nil, err
+ }
+ accounts := make(map[common.Address]struct{})
+ for _, wallet := range s.b.AccountManager().Wallets() {
+ for _, account := range wallet.Accounts() {
+ accounts[account.Address] = struct{}{}
+ }
+ }
+ transactions := make([]*RPCTransaction, 0, len(pending))
+ for _, tx := range pending {
+ var signer types.Signer = types.HomesteadSigner{}
+ if tx.Protected() {
+ signer = types.NewEIP155Signer(tx.ChainId())
+ }
+ from, _ := types.Sender(signer, tx)
+ if _, exists := accounts[from]; exists {
+ transactions = append(transactions, newRPCPendingTransaction(tx))
+ }
+ }
+ return transactions, nil
+}
+
+// Resend accepts an existing transaction and a new gas price and limit. It will remove
+// the given transaction from the pool and reinsert it with the new gas price and limit.
+func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs SendTxArgs, gasPrice *hexutil.Big, gasLimit *hexutil.Uint64) (common.Hash, error) {
+ if sendArgs.Nonce == nil {
+ return common.Hash{}, fmt.Errorf("missing transaction nonce in transaction spec")
+ }
+ if err := sendArgs.setDefaults(ctx, s.b); err != nil {
+ return common.Hash{}, err
+ }
+ matchTx := sendArgs.toTransaction()
+ 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() {
+ signer = types.NewEIP155Signer(p.ChainId())
+ }
+ wantSigHash := signer.Hash(matchTx)
+
+ if pFrom, err := types.Sender(signer, p); err == nil && pFrom == sendArgs.From && signer.Hash(p) == wantSigHash {
+ // Match. Re-sign and send the transaction.
+ if gasPrice != nil && (*big.Int)(gasPrice).Sign() != 0 {
+ sendArgs.GasPrice = gasPrice
+ }
+ if gasLimit != nil && *gasLimit != 0 {
+ sendArgs.Gas = gasLimit
+ }
+ signedTx, err := s.sign(sendArgs.From, sendArgs.toTransaction())
+ if err != nil {
+ return common.Hash{}, err
+ }
+ if err = s.b.SendTx(ctx, signedTx); err != nil {
+ return common.Hash{}, err
+ }
+ return signedTx.Hash(), nil
+ }
+ }
+
+ return common.Hash{}, fmt.Errorf("Transaction %#x not found", matchTx.Hash())
+}
+
+// PublicDebugAPI is the collection of Ethereum APIs exposed over the public
+// debugging endpoint.
+type PublicDebugAPI struct {
+ b Backend
+}
+
+// NewPublicDebugAPI creates a new API definition for the public debug methods
+// of the Ethereum service.
+func NewPublicDebugAPI(b Backend) *PublicDebugAPI {
+ return &PublicDebugAPI{b: b}
+}
+
+// GetBlockRlp retrieves the RLP encoded for of a single block.
+func (api *PublicDebugAPI) GetBlockRlp(ctx context.Context, number uint64) (string, error) {
+ block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number))
+ if block == nil {
+ return "", fmt.Errorf("block #%d not found", number)
+ }
+ encoded, err := rlp.EncodeToBytes(block)
+ if err != nil {
+ return "", err
+ }
+ return fmt.Sprintf("%x", encoded), nil
+}
+
+// TestSignCliqueBlock fetches the given block number, and attempts to sign it as a clique header with the
+// given address, returning the address of the recovered signature
+//
+// This is a temporary method to debug the externalsigner integration,
+// TODO: Remove this method when the integration is mature
+func (api *PublicDebugAPI) TestSignCliqueBlock(ctx context.Context, address common.Address, number uint64) (common.Address, error) {
+ block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number))
+ if block == nil {
+ return common.Address{}, fmt.Errorf("block #%d not found", number)
+ }
+ header := block.Header()
+ header.Extra = make([]byte, 32+65)
+ encoded := clique.CliqueRLP(header)
+
+ // Look up the wallet containing the requested signer
+ account := accounts.Account{Address: address}
+ wallet, err := api.b.AccountManager().Find(account)
+ if err != nil {
+ return common.Address{}, err
+ }
+
+ signature, err := wallet.SignData(account, accounts.MimetypeClique, encoded)
+ if err != nil {
+ return common.Address{}, err
+ }
+ sealHash := clique.SealHash(header).Bytes()
+ log.Info("test signing of clique block",
+ "Sealhash", fmt.Sprintf("%x", sealHash),
+ "signature", fmt.Sprintf("%x", signature))
+ pubkey, err := crypto.Ecrecover(sealHash, signature)
+ if err != nil {
+ return common.Address{}, err
+ }
+ var signer common.Address
+ copy(signer[:], crypto.Keccak256(pubkey[1:])[12:])
+
+ return signer, nil
+}
+
+// PrintBlock retrieves a block and returns its pretty printed form.
+func (api *PublicDebugAPI) PrintBlock(ctx context.Context, number uint64) (string, error) {
+ block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number))
+ if block == nil {
+ return "", fmt.Errorf("block #%d not found", number)
+ }
+ return spew.Sdump(block), nil
+}
+
+// SeedHash retrieves the seed hash of a block.
+func (api *PublicDebugAPI) SeedHash(ctx context.Context, number uint64) (string, error) {
+ block, _ := api.b.BlockByNumber(ctx, rpc.BlockNumber(number))
+ if block == nil {
+ return "", fmt.Errorf("block #%d not found", number)
+ }
+ return fmt.Sprintf("0x%x", ethash.SeedHash(number)), nil
+}
+
+// PrivateDebugAPI is the collection of Ethereum APIs exposed over the private
+// debugging endpoint.
+type PrivateDebugAPI struct {
+ b Backend
+}
+
+// NewPrivateDebugAPI creates a new API definition for the private debug methods
+// of the Ethereum service.
+func NewPrivateDebugAPI(b Backend) *PrivateDebugAPI {
+ return &PrivateDebugAPI{b: b}
+}
+
+// ChaindbProperty returns leveldb properties of the key-value database.
+func (api *PrivateDebugAPI) ChaindbProperty(property string) (string, error) {
+ if property == "" {
+ property = "leveldb.stats"
+ } else if !strings.HasPrefix(property, "leveldb.") {
+ property = "leveldb." + property
+ }
+ return api.b.ChainDb().Stat(property)
+}
+
+// ChaindbCompact flattens the entire key-value database into a single level,
+// removing all unused slots and merging all keys.
+func (api *PrivateDebugAPI) ChaindbCompact() error {
+ for b := byte(0); b < 255; b++ {
+ log.Info("Compacting chain database", "range", fmt.Sprintf("0x%0.2X-0x%0.2X", b, b+1))
+ if err := api.b.ChainDb().Compact([]byte{b}, []byte{b + 1}); err != nil {
+ log.Error("Database compaction failed", "err", err)
+ return err
+ }
+ }
+ return nil
+}
+
+// SetHead rewinds the head of the blockchain to a previous block.
+func (api *PrivateDebugAPI) SetHead(number hexutil.Uint64) {
+ api.b.SetHead(uint64(number))
+}
+
+// PublicNetAPI offers network related RPC methods
+type PublicNetAPI struct {
+ net *p2p.Server
+ networkVersion uint64
+}
+
+// NewPublicNetAPI creates a new net API instance.
+func NewPublicNetAPI(net *p2p.Server, networkVersion uint64) *PublicNetAPI {
+ return &PublicNetAPI{net, networkVersion}
+}
+
+// Listening returns an indication if the node is listening for network connections.
+func (s *PublicNetAPI) Listening() bool {
+ return true // always listening
+}
+
+// PeerCount returns the number of connected peers
+func (s *PublicNetAPI) PeerCount() hexutil.Uint {
+ return hexutil.Uint(s.net.PeerCount())
+}
+
+// Version returns the current ethereum protocol version.
+func (s *PublicNetAPI) Version() string {
+ return fmt.Sprintf("%d", s.networkVersion)
+}
diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go
new file mode 100644
index 0000000..06c6db3
--- /dev/null
+++ b/internal/ethapi/backend.go
@@ -0,0 +1,130 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package ethapi implements the general Ethereum API functions.
+package ethapi
+
+import (
+ "context"
+ "math/big"
+
+ "github.com/ethereum/go-ethereum/accounts"
+ "github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/core"
+ "github.com/ethereum/go-ethereum/core/bloombits"
+ "github.com/ethereum/go-ethereum/core/state"
+ "github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/core/vm"
+ "github.com/ethereum/go-ethereum/eth/downloader"
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/ethereum/go-ethereum/event"
+ "github.com/ethereum/go-ethereum/params"
+ "github.com/ethereum/go-ethereum/rpc"
+)
+
+// Backend interface provides the common API services (that are provided by
+// both full and light clients) with access to necessary functions.
+type Backend interface {
+ // General Ethereum API
+ Downloader() *downloader.Downloader
+ 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
+
+ // 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)
+ BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)
+ BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
+ StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error)
+ GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error)
+ GetTd(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
+ SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription
+
+ // Transaction pool API
+ SendTx(ctx context.Context, signedTx *types.Transaction) error
+ GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error)
+ GetPoolTransactions() (types.Transactions, error)
+ GetPoolTransaction(txHash common.Hash) *types.Transaction
+ GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error)
+ Stats() (pending int, queued int)
+ TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions)
+ SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription
+
+ // Filter API
+ BloomStatus() (uint64, uint64)
+ GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
+ ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)
+ SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
+ SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription
+
+ ChainConfig() *params.ChainConfig
+ CurrentBlock() *types.Block
+}
+
+func GetAPIs(apiBackend Backend) []rpc.API {
+ nonceLock := new(AddrLocker)
+ return []rpc.API{
+ {
+ Namespace: "eth",
+ Version: "1.0",
+ Service: NewPublicEthereumAPI(apiBackend),
+ Public: true,
+ }, {
+ Namespace: "eth",
+ Version: "1.0",
+ Service: NewPublicBlockChainAPI(apiBackend),
+ Public: true,
+ }, {
+ Namespace: "eth",
+ Version: "1.0",
+ Service: NewPublicTransactionPoolAPI(apiBackend, nonceLock),
+ Public: true,
+ }, {
+ Namespace: "txpool",
+ Version: "1.0",
+ Service: NewPublicTxPoolAPI(apiBackend),
+ Public: true,
+ }, {
+ Namespace: "debug",
+ Version: "1.0",
+ Service: NewPublicDebugAPI(apiBackend),
+ Public: true,
+ }, {
+ Namespace: "debug",
+ Version: "1.0",
+ Service: NewPrivateDebugAPI(apiBackend),
+ }, {
+ Namespace: "eth",
+ Version: "1.0",
+ Service: NewPublicAccountAPI(apiBackend.AccountManager()),
+ Public: true,
+ }, {
+ Namespace: "personal",
+ Version: "1.0",
+ Service: NewPrivateAccountAPI(apiBackend, nonceLock),
+ Public: false,
+ },
+ }
+}