Updated marshalling
This commit is contained in:
obscuren
parent
9f133a92d0
commit
0929f59ec2
89
block.go
89
block.go
@ -74,7 +74,6 @@ func CreateBlock(root string, num int, prevHash string, base string, difficulty
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block.state.Update(string(addr), string(contract.MarshalRlp()))
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for i, val := range tx.data {
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contract.state.Update(string(NumberToBytes(uint64(i), 32)), val)
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//contract.state.Update(string(Encode(uint32(i))), val)
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}
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block.UpdateContract(addr, contract)
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}
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@ -105,6 +104,7 @@ func (block *Block) PayFee(addr []byte, fee uint64) bool {
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// If we can't pay the fee return
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if contract == nil || contract.amount < fee {
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fmt.Println("Contract has insufficient funds", contract.amount, fee)
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return false
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}
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@ -112,7 +112,7 @@ func (block *Block) PayFee(addr []byte, fee uint64) bool {
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block.state.Update(string(addr), string(contract.MarshalRlp()))
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data := block.state.Get(string(block.coinbase))
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println(data)
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// Get the ether (coinbase) and add the fee (gief fee to miner)
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ether := NewEtherFromData([]byte(data))
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ether.amount += fee
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@ -159,75 +159,24 @@ func (block *Block) MarshalRlp() []byte {
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}
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func (block *Block) UnmarshalRlp(data []byte) {
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t, _ := Decode(data,0)
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decoder := NewRlpDecoder(data)
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// interface slice assertion
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if slice, ok := t.([]interface{}); ok {
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// interface slice assertion
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if header, ok := slice[0].([]interface{}); ok {
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if number, ok := header[0].(uint8); ok {
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block.number = uint32(number)
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}
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header := decoder.Get(0)
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block.number = uint32(header.Get(0).AsUint())
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block.prevHash = header.Get(1).AsString()
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// sha of uncles is header[2]
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block.coinbase = header.Get(3).AsString()
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block.state = NewTrie(Db, header.Get(4).AsString())
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block.difficulty = uint32(header.Get(5).AsUint())
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block.time = int64(header.Get(6).AsUint())
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block.nonce = uint32(header.Get(7).AsUint())
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block.extra = header.Get(8).AsString()
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if prevHash, ok := header[1].([]uint8); ok {
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block.prevHash = string(prevHash)
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}
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// sha of uncles is header[2]
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if coinbase, ok := header[3].([]byte); ok {
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block.coinbase = string(coinbase)
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}
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if state, ok := header[4].([]uint8); ok {
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// XXX The database is currently a global variable defined in testing.go
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// This will eventually go away and the database will grabbed from the public server
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// interface
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block.state = NewTrie(Db, string(state))
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}
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// sha is header[5]
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// It's either 8bit or 64
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if difficulty, ok := header[6].(uint8); ok {
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block.difficulty = uint32(difficulty)
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}
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if difficulty, ok := header[6].(uint64); ok {
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block.difficulty = uint32(difficulty)
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}
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// It's either 8bit or 64
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if time, ok := header[7].(uint8); ok {
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block.time = int64(time)
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}
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if time, ok := header[7].(uint64); ok {
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block.time = int64(time)
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}
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if nonce, ok := header[8].(uint8); ok {
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block.nonce = uint32(nonce)
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}
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if extra, ok := header[9].([]byte); ok {
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block.extra = string(extra)
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}
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}
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if txSlice, ok := slice[1].([]interface{}); ok {
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// Create transaction slice equal to decoded tx interface slice
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block.transactions = make([]*Transaction, len(txSlice))
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// Unmarshal transactions
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for i, tx := range txSlice {
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if t, ok := tx.([]byte); ok {
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tx := &Transaction{}
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// Use the unmarshaled data to unmarshal the transaction
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// t is still decoded.
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tx.UnmarshalRlp(t)
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block.transactions[i] = tx
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}
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}
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}
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txes := decoder.Get(1)
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block.transactions = make([]*Transaction, txes.Length())
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for i := 0; i < txes.Length(); i++ {
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tx := &Transaction{}
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tx.UnmarshalRlp(txes.Get(i).AsBytes())
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block.transactions[i] = tx
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}
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}
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24
contract.go
24
contract.go
@ -22,27 +22,11 @@ func (c *Contract) MarshalRlp() []byte {
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}
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func (c *Contract) UnmarshalRlp(data []byte) {
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t, _ := Decode(data, 0)
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decoder := NewRlpDecoder(data)
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if slice, ok := t.([]interface{}); ok {
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if t, ok := slice[0].(uint8); ok {
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c.t = uint32(t)
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}
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if amount, ok := slice[1].(uint8); ok {
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c.amount = uint64(amount)
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} else if amount, ok := slice[1].(uint16); ok {
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c.amount = uint64(amount)
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} else if amount, ok := slice[1].(uint32); ok {
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c.amount = uint64(amount)
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} else if amount, ok := slice[1].(uint64); ok {
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c.amount = amount
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}
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if root, ok := slice[2].([]uint8); ok {
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c.state = NewTrie(Db, string(root))
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}
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}
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c.t = uint32(decoder.Get(0).AsUint())
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c.amount = decoder.Get(1).AsUint()
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c.state = NewTrie(Db, decoder.Get(2).AsString())
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}
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type Ether struct {
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@ -32,5 +32,3 @@ var GenisisHeader = []interface{}{
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}
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var Genesis = []interface{}{ GenisisHeader, []interface{}{}, []interface{}{} }
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var GenisisBlock = NewBlock( Encode(Genesis) )
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105
rlp.go
105
rlp.go
@ -4,8 +4,110 @@ import (
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"fmt"
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"bytes"
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"math"
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"math/big"
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)
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type RlpEncoder struct {
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rlpData []byte
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}
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func NewRlpEncoder() *RlpEncoder {
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encoder := &RlpEncoder{}
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return encoder
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}
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func (coder *RlpEncoder) EncodeData(rlpData []interface{}) []byte {
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return nil
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}
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// Data attributes are returned by the rlp decoder. The data attributes represents
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// one item within the rlp data structure. It's responsible for all the casting
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// It always returns something valid
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type RlpDataAttribute struct {
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dataAttrib interface{}
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}
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func NewRlpDataAttribute(attrib interface{}) *RlpDataAttribute {
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return &RlpDataAttribute{dataAttrib: attrib}
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}
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func (attr *RlpDataAttribute) Length() int {
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if data, ok := attr.dataAttrib.([]interface{}); ok {
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return len(data)
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}
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return 0
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}
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func (attr *RlpDataAttribute) AsUint() uint64 {
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if value, ok := attr.dataAttrib.(uint8); ok {
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return uint64(value)
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} else if value, ok := attr.dataAttrib.(uint16); ok {
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return uint64(value)
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} else if value, ok := attr.dataAttrib.(uint32); ok {
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return uint64(value)
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} else if value, ok := attr.dataAttrib.(uint64); ok {
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return value
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}
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return 0
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}
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func (attr *RlpDataAttribute) AsBigInt() *big.Int {
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if a, ok := attr.dataAttrib.([]byte); ok {
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return Big(string(a))
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}
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return big.NewInt(0)
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}
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func (attr *RlpDataAttribute) AsString() string {
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if a, ok := attr.dataAttrib.([]byte); ok {
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return string(a)
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}
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return ""
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}
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func (attr *RlpDataAttribute) AsBytes() []byte {
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if a, ok := attr.dataAttrib.([]byte); ok {
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return a
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}
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return make([]byte, 0)
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}
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// Threat the attribute as a slice
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func (attr *RlpDataAttribute) Get(idx int) *RlpDataAttribute {
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if d, ok := attr.dataAttrib.([]interface{}); ok {
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// Guard for oob
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if len(d) < idx {
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return NewRlpDataAttribute(nil)
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}
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return NewRlpDataAttribute(d[idx])
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}
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// If this wasn't a slice you probably shouldn't be using this function
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return NewRlpDataAttribute(nil)
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}
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type RlpDecoder struct {
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rlpData interface{}
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}
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func NewRlpDecoder(rlpData []byte) *RlpDecoder {
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decoder := &RlpDecoder{}
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// Decode the data
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data, _ := Decode(rlpData,0)
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decoder.rlpData = data
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return decoder
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}
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func (dec *RlpDecoder) Get(idx int) *RlpDataAttribute {
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return NewRlpDataAttribute(dec.rlpData).Get(idx)
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}
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/// Raw methods
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func BinaryLength(n uint64) uint64 {
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if n == 0 { return 0 }
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@ -122,6 +224,9 @@ func Encode(object interface{}) []byte {
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buff.WriteString(string(len(b2) + 55) + b2 + b)
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}
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case *big.Int:
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buff.Write(Encode(t.String()))
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case string:
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if len(t) < 56 {
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buff.WriteString(string(len(t) + 64) + t)
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116
transaction.go
116
transaction.go
@ -2,7 +2,7 @@ package main
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import (
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"math/big"
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_"fmt"
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"fmt"
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"github.com/obscuren/secp256k1-go"
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_"encoding/hex"
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_"crypto/sha256"
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@ -64,7 +64,8 @@ func NewTransaction(to string, value uint64, data []string) *Transaction {
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tx.data[i] = instr
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}
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tx.SetVRS()
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tx.Sign([]byte("privkey"))
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tx.Sender()
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return &tx
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@ -86,9 +87,9 @@ func (tx *Transaction) IsContract() bool {
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return tx.recipient == ""
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}
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func (tx *Transaction) Signature() []byte {
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func (tx *Transaction) Signature(key []byte) []byte {
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hash := tx.Hash()
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sec := Sha256Bin([]byte("myprivkey"))
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sec := Sha256Bin(key)
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sig, _ := secp256k1.Sign(hash, sec)
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@ -96,29 +97,33 @@ func (tx *Transaction) Signature() []byte {
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}
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func (tx *Transaction) PublicKey() []byte {
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hash := Sha256Bin(tx.MarshalRlp())
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sig := tx.Signature()
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hash := Sha256Bin(tx.Hash())
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sig := append(tx.r, tx.s...)
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pubkey, _ := secp256k1.RecoverPubkey(hash, sig)
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return pubkey
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}
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func (tx *Transaction) Address() []byte {
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pubk := tx.PublicKey()
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// 1 is the marker 04
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key := pubk[1:65]
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func (tx *Transaction) Sender() []byte {
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pubkey := tx.PublicKey()
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return Sha256Bin(key)[12:]
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// Validate the returned key.
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// Return nil if public key isn't in full format (04 = full, 03 = compact)
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if pubkey[0] != 4 {
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return nil
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}
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return Sha256Bin(pubkey[1:65])[12:]
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}
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func (tx *Transaction) SetVRS() {
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// Add 27 so we get either 27 or 28 (for positive and negative)
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tx.v = uint32(tx.Signature()[64]) + 27
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func (tx *Transaction) Sign(privk []byte) {
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sig := tx.Signature(privk)
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pubk := tx.PublicKey()[1:65]
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tx.r = pubk[:32]
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tx.s = pubk[32:64]
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// Add 27 so we get either 27 or 28 (for positive and negative)
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tx.v = uint32(sig[64]) + 27
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tx.r = sig[:32]
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tx.s = sig[32:65]
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}
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func (tx *Transaction) MarshalRlp() []byte {
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@ -138,72 +143,23 @@ func (tx *Transaction) MarshalRlp() []byte {
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}
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func (tx *Transaction) UnmarshalRlp(data []byte) {
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t, _ := Decode(data,0)
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if slice, ok := t.([]interface{}); ok {
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if nonce, ok := slice[0].(uint8); ok {
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tx.nonce = string(nonce)
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}
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decoder := NewRlpDecoder(data)
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if recipient, ok := slice[1].([]byte); ok {
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tx.recipient = string(recipient)
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}
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tx.nonce = decoder.Get(0).AsString()
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tx.recipient = decoder.Get(0).AsString()
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tx.value = decoder.Get(2).AsUint()
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tx.fee = uint32(decoder.Get(3).AsUint())
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// If only I knew of a better way.
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if value, ok := slice[2].(uint8); ok {
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tx.value = uint64(value)
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}
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if value, ok := slice[2].(uint16); ok {
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tx.value = uint64(value)
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}
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if value, ok := slice[2].(uint32); ok {
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tx.value = uint64(value)
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}
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if value, ok := slice[2].(uint64); ok {
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tx.value = uint64(value)
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}
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if fee, ok := slice[3].(uint8); ok {
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tx.fee = uint32(fee)
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}
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if fee, ok := slice[3].(uint16); ok {
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tx.fee = uint32(fee)
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}
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if fee, ok := slice[3].(uint32); ok {
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tx.fee = uint32(fee)
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}
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if fee, ok := slice[3].(uint64); ok {
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tx.fee = uint32(fee)
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}
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// Encode the data/instructions
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if data, ok := slice[4].([]interface{}); ok {
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tx.data = make([]string, len(data))
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for i, d := range data {
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if instr, ok := d.([]byte); ok {
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tx.data[i] = string(instr)
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}
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}
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}
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// vrs
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if v, ok := slice[5].(uint8); ok {
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tx.v = uint32(v)
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}
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if v, ok := slice[5].(uint16); ok {
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tx.v = uint32(v)
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}
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if v, ok := slice[5].(uint32); ok {
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tx.v = uint32(v)
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}
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if v, ok := slice[5].(uint64); ok {
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tx.v = uint32(v)
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}
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if r, ok := slice[6].([]byte); ok {
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tx.r = r
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}
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if s, ok := slice[7].([]byte); ok {
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tx.s = s
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}
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d := decoder.Get(4)
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tx.data = make([]string, d.Length())
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fmt.Println(d.Get(0))
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for i := 0; i < d.Length(); i++ {
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tx.data[i] = d.Get(i).AsString()
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}
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tx.v = uint32(decoder.Get(5).AsUint())
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tx.r = decoder.Get(6).AsBytes()
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tx.s = decoder.Get(7).AsBytes()
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}
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func InitFees() {
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Block a user