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Merge pull request #245 from binance-chain/develop
smart chain features
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package bsc | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/big" | ||
| ) | ||
|
|
||
| const ( | ||
| // BloomByteLength represents the number of bytes used in a header log bloom. | ||
| BloomByteLength = 256 | ||
| ) | ||
|
|
||
| // Bloom represents a 2048 bit bloom filter. | ||
| type Bloom [BloomByteLength]byte | ||
|
|
||
| // SetBytes sets the content of b to the given bytes. | ||
| // It panics if d is not of suitable size. | ||
| func (b *Bloom) SetBytes(d []byte) { | ||
| if len(b) < len(d) { | ||
| panic(fmt.Sprintf("bloom bytes too big %d %d", len(b), len(d))) | ||
| } | ||
| copy(b[BloomByteLength-len(d):], d) | ||
| } | ||
|
|
||
| // Big converts b to a big integer. | ||
| func (b Bloom) Big() *big.Int { | ||
| return new(big.Int).SetBytes(b[:]) | ||
| } | ||
|
|
||
| func (b Bloom) Bytes() []byte { | ||
| return b[:] | ||
| } | ||
|
|
||
| // MarshalText encodes b as a hex string with 0x prefix. | ||
| func (b Bloom) MarshalText() ([]byte, error) { | ||
| return Bytes(b[:]).MarshalText() | ||
| } | ||
|
|
||
| // UnmarshalText b as a hex string with 0x prefix. | ||
| func (b *Bloom) UnmarshalText(input []byte) error { | ||
| return UnmarshalFixedText("Bloom", input, b[:]) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| package bsc | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "io" | ||
| "math/big" | ||
|
|
||
| "github.com/tendermint/tendermint/crypto/secp256k1" | ||
| "golang.org/x/crypto/sha3" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/bsc/rlp" | ||
| ) | ||
|
|
||
| type Header struct { | ||
| ParentHash Hash `json:"parentHash" gencodec:"required"` | ||
| UncleHash Hash `json:"sha3Uncles" gencodec:"required"` | ||
| Coinbase Address `json:"miner" gencodec:"required"` | ||
| Root Hash `json:"stateRoot" gencodec:"required"` | ||
| TxHash Hash `json:"transactionsRoot" gencodec:"required"` | ||
| ReceiptHash Hash `json:"receiptsRoot" gencodec:"required"` | ||
| Bloom Bloom `json:"logsBloom" gencodec:"required"` | ||
| Difficulty int64 `json:"difficulty" gencodec:"required"` | ||
| Number int64 `json:"number" gencodec:"required"` | ||
| GasLimit uint64 `json:"gasLimit" gencodec:"required"` | ||
| GasUsed uint64 `json:"gasUsed" gencodec:"required"` | ||
| Time uint64 `json:"timestamp" gencodec:"required"` | ||
| Extra []byte `json:"extraData" gencodec:"required"` | ||
| MixDigest Hash `json:"mixHash"` | ||
| Nonce BlockNonce `json:"nonce"` | ||
| } | ||
|
|
||
| // MarshalJSON marshals as JSON. | ||
| func (h Header) MarshalJSON() ([]byte, error) { | ||
| type Header struct { | ||
| ParentHash Hash `json:"parentHash" gencodec:"required"` | ||
| UncleHash Hash `json:"sha3Uncles" gencodec:"required"` | ||
| Coinbase Address `json:"miner" gencodec:"required"` | ||
| Root Hash `json:"stateRoot" gencodec:"required"` | ||
| TxHash Hash `json:"transactionsRoot" gencodec:"required"` | ||
| ReceiptHash Hash `json:"receiptsRoot" gencodec:"required"` | ||
| Bloom Bloom `json:"logsBloom" gencodec:"required"` | ||
| Difficulty *Big `json:"difficulty" gencodec:"required"` | ||
| Number *Big `json:"number" gencodec:"required"` | ||
| GasLimit Uint64 `json:"gasLimit" gencodec:"required"` | ||
| GasUsed Uint64 `json:"gasUsed" gencodec:"required"` | ||
| Time Uint64 `json:"timestamp" gencodec:"required"` | ||
| Extra Bytes `json:"extraData" gencodec:"required"` | ||
| MixDigest Hash `json:"mixHash"` | ||
| Nonce BlockNonce `json:"nonce"` | ||
| } | ||
| var enc Header | ||
| enc.ParentHash = h.ParentHash | ||
| enc.UncleHash = h.UncleHash | ||
| enc.Coinbase = h.Coinbase | ||
| enc.Root = h.Root | ||
| enc.TxHash = h.TxHash | ||
| enc.ReceiptHash = h.ReceiptHash | ||
| enc.Bloom = h.Bloom | ||
| enc.Difficulty = (*Big)(big.NewInt(h.Difficulty)) | ||
| enc.Number = (*Big)(big.NewInt(h.Number)) | ||
| enc.GasLimit = Uint64(h.GasLimit) | ||
| enc.GasUsed = Uint64(h.GasUsed) | ||
| enc.Time = Uint64(h.Time) | ||
| enc.Extra = h.Extra | ||
| enc.MixDigest = h.MixDigest | ||
| enc.Nonce = h.Nonce | ||
| return json.Marshal(&enc) | ||
| } | ||
|
|
||
| // UnmarshalJSON unmarshals from JSON. | ||
| func (h *Header) UnmarshalJSON(input []byte) error { | ||
| type Header struct { | ||
| ParentHash *Hash `json:"parentHash" gencodec:"required"` | ||
| UncleHash *Hash `json:"sha3Uncles" gencodec:"required"` | ||
| Coinbase *Address `json:"miner" gencodec:"required"` | ||
| Root *Hash `json:"stateRoot" gencodec:"required"` | ||
| TxHash *Hash `json:"transactionsRoot" gencodec:"required"` | ||
| ReceiptHash *Hash `json:"receiptsRoot" gencodec:"required"` | ||
| Bloom *Bloom `json:"logsBloom" gencodec:"required"` | ||
| Difficulty *Big `json:"difficulty" gencodec:"required"` | ||
| Number *Big `json:"number" gencodec:"required"` | ||
| GasLimit *Uint64 `json:"gasLimit" gencodec:"required"` | ||
| GasUsed *Uint64 `json:"gasUsed" gencodec:"required"` | ||
| Time *Uint64 `json:"timestamp" gencodec:"required"` | ||
| Extra *Bytes `json:"extraData" gencodec:"required"` | ||
| MixDigest *Hash `json:"mixHash"` | ||
| Nonce *BlockNonce `json:"nonce"` | ||
| } | ||
| var dec Header | ||
| if err := json.Unmarshal(input, &dec); err != nil { | ||
| return err | ||
| } | ||
| if dec.ParentHash == nil { | ||
| return errors.New("missing required field 'parentHash' for Header") | ||
| } | ||
| h.ParentHash = *dec.ParentHash | ||
| if dec.UncleHash == nil { | ||
| return errors.New("missing required field 'sha3Uncles' for Header") | ||
| } | ||
| h.UncleHash = *dec.UncleHash | ||
| if dec.Coinbase == nil { | ||
| return errors.New("missing required field 'miner' for Header") | ||
| } | ||
| h.Coinbase = *dec.Coinbase | ||
| if dec.Root == nil { | ||
| return errors.New("missing required field 'stateRoot' for Header") | ||
| } | ||
| h.Root = *dec.Root | ||
| if dec.TxHash == nil { | ||
| return errors.New("missing required field 'transactionsRoot' for Header") | ||
| } | ||
| h.TxHash = *dec.TxHash | ||
| if dec.ReceiptHash == nil { | ||
| return errors.New("missing required field 'receiptsRoot' for Header") | ||
| } | ||
| h.ReceiptHash = *dec.ReceiptHash | ||
| if dec.Bloom == nil { | ||
| return errors.New("missing required field 'logsBloom' for Header") | ||
| } | ||
| h.Bloom = *dec.Bloom | ||
| if dec.Difficulty == nil { | ||
| return errors.New("missing required field 'difficulty' for Header") | ||
| } | ||
| h.Difficulty = dec.Difficulty.ToInt().Int64() | ||
| if dec.Number == nil { | ||
| return errors.New("missing required field 'number' for Header") | ||
| } | ||
| h.Number = dec.Number.ToInt().Int64() | ||
| if dec.GasLimit == nil { | ||
| return errors.New("missing required field 'gasLimit' for Header") | ||
| } | ||
| h.GasLimit = uint64(*dec.GasLimit) | ||
| if dec.GasUsed == nil { | ||
| return errors.New("missing required field 'gasUsed' for Header") | ||
| } | ||
| h.GasUsed = uint64(*dec.GasUsed) | ||
| if dec.Time == nil { | ||
| return errors.New("missing required field 'timestamp' for Header") | ||
| } | ||
| h.Time = uint64(*dec.Time) | ||
| if dec.Extra == nil { | ||
| return errors.New("missing required field 'extraData' for Header") | ||
| } | ||
| h.Extra = *dec.Extra | ||
| if dec.MixDigest != nil { | ||
| h.MixDigest = *dec.MixDigest | ||
| } | ||
| if dec.Nonce != nil { | ||
| h.Nonce = *dec.Nonce | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| const extraSeal = 65 | ||
|
|
||
| func (h *Header) GetSignature() ([]byte, error) { | ||
| if len(h.Extra) < extraSeal { | ||
| return nil, errors.New("extra-data 65 byte signature suffix missing") | ||
| } | ||
| signature := h.Extra[len(h.Extra)-extraSeal:] | ||
| return signature, nil | ||
| } | ||
|
|
||
| func (h *Header) ExtractSignerFromHeader() (signer Address, err error) { | ||
| signature, err := h.GetSignature() | ||
| if err != nil { | ||
| return | ||
| } | ||
| pubKey, err := secp256k1.RecoverPubkey(SealHash(h).Bytes(), signature) | ||
| if err != nil { | ||
| return | ||
| } | ||
| copy(signer[:], Keccak256(pubKey[1:])[12:]) | ||
| return | ||
| } | ||
|
|
||
| // Keccak256 calculates and returns the Keccak256 hash of the input data. | ||
| func Keccak256(data ...[]byte) []byte { | ||
| d := sha3.NewLegacyKeccak256() | ||
| for _, b := range data { | ||
| d.Write(b) | ||
| } | ||
| return d.Sum(nil) | ||
| } | ||
|
|
||
| // SealHash returns the hash of a block prior to it being sealed. | ||
| func SealHash(header *Header) (hash Hash) { | ||
| hasher := sha3.NewLegacyKeccak256() | ||
| encodeSigHeader(hasher, header) | ||
| hasher.Sum(hash[:0]) | ||
| return hash | ||
| } | ||
|
|
||
| func encodeSigHeader(w io.Writer, header *Header) { | ||
| err := rlp.Encode(w, []interface{}{ | ||
| header.ParentHash, | ||
| header.UncleHash, | ||
| header.Coinbase, | ||
| header.Root, | ||
| header.TxHash, | ||
| header.ReceiptHash, | ||
| header.Bloom, | ||
| big.NewInt(header.Difficulty), | ||
| big.NewInt(header.Number), | ||
| header.GasLimit, | ||
| header.GasUsed, | ||
| header.Time, | ||
| header.Extra[:len(header.Extra)-65], // this will panic if extra is too short, should check before calling encodeSigHeader | ||
| header.MixDigest, | ||
| header.Nonce, | ||
| }) | ||
| if err != nil { | ||
| panic("can't encode: " + err.Error()) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package bsc | ||
|
|
||
| import ( | ||
| "encoding/hex" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
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| func TestHeader_UnmarshalJSON(t *testing.T) { | ||
| h := &Header{} | ||
| jsonStr := `{"difficulty":"0x2", | ||
| "extraData":"0xd98301090a846765746889676f312e31322e3137856c696e75780000000000005b28385ac3a02a84c391c5d90b3aa0a62365136d80892c5e6158797b394f436c70c697f8d44d6dcfa49d4871897d2ff132356496f066d0adf28ddb3b7099ff5d00", | ||
| "gasLimit":"0x2625a00", | ||
| "gasUsed":"0xd752e8", | ||
| "hash":"0x14c62182b7138b45c400afccbebda3c68a78ca7a6100d3e1fe9e1e8e71ef2b66", | ||
| "logsBloom":"0x984e3983604a6120412617213b05004281984c60680c0cd0070200181d240016810500880001002b00055a0470461c09201145010c4e0729408998810a8800400a280247010848590804014800800454317020c88041a40248321010229290e68000011a808068002a56e2c41087114422a9841921a24ea709000430069010315e2c120124080610200cc18c137a0021206170070de90887502148600090002a50440040800905028a640401210c004089c20c4000e44054100cd00907642b4040900a920126454158b64181002d10014e80820508201c0480492880008c84102b0614804474840400413818940819042084c0042a002040498000c201309400", | ||
| "miner":"0xfffffffffffffffffffffffffffffffffffffffe", | ||
| "mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000", | ||
| "nonce":"0x0000000000000000", | ||
| "number":"0x1b4", | ||
| "parentHash":"0xbfbb0f930378e623c27c1b6888694abd63926581697cf70a268a7455497e1011", | ||
| "receiptsRoot":"0x32a9e85c5b51c5b99ce76dac6d1a75dd603bd7406b36d62cf8e74475c2be7462", | ||
| "sha3Uncles":"0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347", | ||
| "size":"0xd73c", | ||
| "stateRoot":"0xa20ff6190c7d8a7993a50a3d60bdeca460c19128ba363413f5bff57670ddccb1", | ||
| "timestamp":"0x5e79a878", | ||
| "totalDifficulty":"0x365", | ||
| "transactionsRoot":"0x8f192c648a6d9035adbf72a55cab5652e3c0d7549c378be45bd3d5248d4b3ac5" | ||
| }` | ||
| err := h.UnmarshalJSON([]byte(jsonStr)) | ||
| require.NoError(t, err) | ||
|
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| signature, err := h.GetSignature() | ||
| require.NoError(t, err) | ||
| require.Equal(t, "5b28385ac3a02a84c391c5d90b3aa0a62365136d80892c5e6158797b394f436c70c697f8d44d6dcfa49d4871897d2ff132356496f066d0adf28ddb3b7099ff5d00", hex.EncodeToString(signature)) | ||
|
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| signer, err := h.ExtractSignerFromHeader() | ||
| require.NoError(t, err) | ||
| require.Equal(t, "0xB12fA6F899a16C156B67dBcb124d3733E72A164E", signer.String()) | ||
| } |
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