// StorageAt returns the data stores in the state for the given address and location.
func (be *registryAPIBackend) StorageAt(addr string, storageAddr string) string {
block := be.bc.CurrentBlock()
state, err := state.New(block.Root(), be.chainDb)
if err != nil {
return ""
}
return state.GetState(common.HexToAddress(addr), common.HexToHash(storageAddr)).Hex()
}
// GetStorageAt returns the storage from the state at the given address, key and block number.
func (s *PublicBlockChainAPI) GetStorageAt(address common.Address, key string, blockNr rpc.BlockNumber) (string, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
state, err := state.New(block.Root(), s.chainDb)
if err != nil {
return "", err
}
return state.GetState(address, common.HexToHash(key)).Hex(), nil
}
return "0x", nil
}
// Register registers a new content hash in the registry.
func (api *PrivateRegistarAPI) Register(sender common.Address, addr common.Address, contentHashHex string) (bool, error) {
block := api.be.bc.CurrentBlock()
state, err := state.New(block.Root(), api.be.chainDb)
if err != nil {
return false, err
}
codeb := state.GetCode(addr)
codeHash := common.BytesToHash(crypto.Sha3(codeb))
contentHash := common.HexToHash(contentHashHex)
_, err = registrar.New(api.be).SetHashToHash(sender, codeHash, contentHash)
return err == nil, err
}
func (h *Header) UnmarshalJSON(data []byte) error {
var ext struct {
ParentHash string
Coinbase string
Difficulty string
GasLimit string
Time *big.Int
Extra string
}
dec := json.NewDecoder(bytes.NewReader(data))
if err := dec.Decode(&ext); err != nil {
return err
}
h.ParentHash = common.HexToHash(ext.ParentHash)
h.Coinbase = common.HexToAddress(ext.Coinbase)
h.Difficulty = common.String2Big(ext.Difficulty)
h.Time = ext.Time
h.Extra = []byte(ext.Extra)
return nil
}
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/common"
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/crypto"
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/crypto/sha3"
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/logger"
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/logger/glog"
"github.com/gophergala2016/etherapis/etherapis/Godeps/_workspace/src/github.com/ethereum/go-ethereum/rlp"
)
const defaultCacheCapacity = 800
var (
// The global cache stores decoded trie nodes by hash as they get loaded.
globalCache = newARC(defaultCacheCapacity)
// This is the known root hash of an empty trie.
emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
// This is the known hash of an empty state trie entry.
emptyState = crypto.Sha3Hash(nil)
)
// ClearGlobalCache clears the global trie cache
func ClearGlobalCache() {
globalCache.Clear()
}
// Database must be implemented by backing stores for the trie.
type Database interface {
DatabaseWriter
// Get returns the value for key from the database.
Get(key []byte) (value []byte, err error)
func (c *testCharger) Charge(from, to common.Address, amount *big.Int, signature []byte) (common.Hash, error) {
return common.HexToHash("0x7426125287fe1dfa9acc6d79008f0dc9a7e0c292b3387040e37c2a71518d711a"), nil
}
// WriteGenesisBlock writes the genesis block to the database as block number 0
func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block, error) {
contents, err := ioutil.ReadAll(reader)
if err != nil {
return nil, err
}
var genesis struct {
Nonce string
Timestamp string
ParentHash string
ExtraData string
GasLimit string
Difficulty string
Mixhash string
Coinbase string
Alloc map[string]struct {
Code string
Storage map[string]string
Balance string
}
}
if err := json.Unmarshal(contents, &genesis); err != nil {
return nil, err
}
// creating with empty hash always works
statedb, _ := state.New(common.Hash{}, chainDb)
for addr, account := range genesis.Alloc {
address := common.HexToAddress(addr)
statedb.AddBalance(address, common.String2Big(account.Balance))
statedb.SetCode(address, common.Hex2Bytes(account.Code))
for key, value := range account.Storage {
statedb.SetState(address, common.HexToHash(key), common.HexToHash(value))
}
}
root, stateBatch := statedb.CommitBatch()
difficulty := common.String2Big(genesis.Difficulty)
block := types.NewBlock(&types.Header{
Nonce: types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()),
Time: common.String2Big(genesis.Timestamp),
ParentHash: common.HexToHash(genesis.ParentHash),
Extra: common.FromHex(genesis.ExtraData),
GasLimit: common.String2Big(genesis.GasLimit),
Difficulty: difficulty,
MixDigest: common.HexToHash(genesis.Mixhash),
Coinbase: common.HexToAddress(genesis.Coinbase),
Root: root,
}, nil, nil, nil)
if block := GetBlock(chainDb, block.Hash()); block != nil {
glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number")
err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64())
if err != nil {
return nil, err
}
return block, nil
}
if err := stateBatch.Write(); err != nil {
return nil, fmt.Errorf("cannot write state: %v", err)
}
if err := WriteTd(chainDb, block.Hash(), difficulty); err != nil {
return nil, err
}
if err := WriteBlock(chainDb, block); err != nil {
return nil, err
}
if err := WriteBlockReceipts(chainDb, block.Hash(), nil); err != nil {
return nil, err
}
if err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()); err != nil {
return nil, err
}
if err := WriteHeadBlockHash(chainDb, block.Hash()); err != nil {
return nil, err
}
return block, nil
}
// RegisterUrl registers a new url in the registry.
func (api *PrivateRegistarAPI) RegisterUrl(sender common.Address, contentHashHex string, url string) (bool, error) {
_, err := registrar.New(api.be).SetUrlToHash(sender, common.HexToHash(contentHashHex), url)
return err == nil, err
}
// Sign will sign the given data string with the given address. The account corresponding with the address needs to
// be unlocked.
func (s *PublicTransactionPoolAPI) Sign(address common.Address, data string) (string, error) {
signature, error := s.am.Sign(accounts.Account{Address: address}, common.HexToHash(data).Bytes())
return common.ToHex(signature), error
}