func NewReadableTransaction(t *coin.Transaction) ReadableTransaction {
sigs := make([]string, len(t.Sigs))
for i, _ := range t.Sigs {
sigs[i] = t.Sigs[i].Hex()
}
in := make([]string, len(t.In))
for i, _ := range t.In {
in[i] = t.In[i].Hex()
}
out := make([]ReadableTransactionOutput, len(t.Out))
for i, _ := range t.Out {
out[i] = NewReadableTransactionOutput(&t.Out[i])
}
return ReadableTransaction{
Length: t.Length,
Type: t.Type,
Hash: t.Hash().Hex(),
InnerHash: t.InnerHash.Hex(),
Sigs: sigs,
In: in,
Out: out,
}
}
// Adds a coin.Transaction to the pool, or updates an existing one's timestamps
// Returns an error if txn is invalid, and whether the transaction already
// existed in the pool.
func (self *UnconfirmedTxnPool) RecordTxn(bc *coin.Blockchain,
t coin.Transaction, addrs map[coin.Address]byte, maxSize int,
burnFactor uint64) (error, bool) {
if err := VerifyTransaction(bc, &t, maxSize, burnFactor); err != nil {
return err, false
}
if err := bc.VerifyTransaction(t); err != nil {
return err, false
}
// Update if we already have this txn
ut, ok := self.Txns[t.Hash()]
if ok {
now := util.Now()
ut.Received = now
ut.Checked = now
self.Txns[ut.Txn.Hash()] = ut
return nil, true
}
// Add txn to index
self.Txns[t.Hash()] = self.createUnconfirmedTxn(&bc.Unspent, t, addrs)
// Add predicted unspents
uxs := coin.CreateExpectedUnspents(t)
for i, _ := range uxs {
self.Unspent.Add(uxs[i])
}
return nil, false
}
// Adds a coin.Transaction to the pool, or updates an existing one's timestamps
// Returns an error if txn is invalid, and whether the transaction already
// existed in the pool.
func (self *UnconfirmedTxnPool) RecordTxn(bc *coin.Blockchain,
t coin.Transaction, addrs map[cipher.Address]byte, maxSize int,
burnFactor uint64) (error, bool) {
if err := VerifyTransaction(bc, &t, maxSize, burnFactor); err != nil {
return err, false
}
if err := bc.VerifyTransaction(t); err != nil {
return err, false
}
// Update if we already have this txn
h := t.Hash()
ut, ok := self.Txns[h]
if ok {
now := util.Now()
ut.Received = now
ut.Checked = now
self.Txns[h] = ut
return nil, true
}
// Add txn to index
self.Txns[h] = self.createUnconfirmedTxn(&bc.Unspent, t, addrs)
// Add predicted unspents
self.Unspent[h] = coin.CreateUnspents(bc.Head().Head, t)
return nil, false
}
// InjectTxn adds a coin.Transaction to the pool, or updates an existing one's timestamps
// Returns an error if txn is invalid, and whether the transaction already
// existed in the pool.
func (utp *UnconfirmedTxnPool) InjectTxn(bc *Blockchain,
t coin.Transaction) (error, bool) {
if err := t.Verify(); err != nil {
return err, false
}
if err := VerifyTransactionFee(bc, &t); err != nil {
return err, false
}
if err := bc.VerifyTransaction(t); err != nil {
return err, false
}
// Update if we already have this txn
h := t.Hash()
ut, ok := utp.Txns[h]
if ok {
now := util.Now()
ut.Received = now
ut.Checked = now
utp.Txns[h] = ut
return nil, true
}
// Add txn to index
unspent := bc.GetUnspent()
utp.Txns[h] = utp.createUnconfirmedTxn(unspent, t)
// Add predicted unspents
utp.Unspent[h] = coin.CreateUnspents(bc.Head().Head, t)
return nil, false
}
func (fg fakeGateway) InjectTransaction(txn coin.Transaction) (coin.Transaction, error) {
if _, v := fg.injectRawTxMap[txn.Hash().Hex()]; v {
return txn, nil
}
return txn, errors.New("inject transaction failed")
}
func assertValidUnconfirmed(t *testing.T, txns map[cipher.SHA256]UnconfirmedTxn,
txn coin.Transaction) {
ut, ok := txns[txn.Hash()]
assert.True(t, ok)
assert.Equal(t, ut.Txn, txn)
assert.True(t, ut.Announced.IsZero())
assert.False(t, ut.Received.IsZero())
assert.False(t, ut.Checked.IsZero())
}
func assertValidUnconfirmed(t *testing.T, txns map[coin.SHA256]UnconfirmedTxn,
txn coin.Transaction, didAnnounce, isOurReceive, isOurSpend bool) {
ut, ok := txns[txn.Hash()]
assert.True(t, ok)
assert.Equal(t, ut.Txn, txn)
assert.Equal(t, ut.IsOurReceive, isOurReceive)
assert.Equal(t, ut.IsOurSpend, isOurSpend)
assert.Equal(t, ut.Announced.IsZero(), !didAnnounce)
assert.False(t, ut.Received.IsZero())
assert.False(t, ut.Checked.IsZero())
}
func assertValidUnspents(t *testing.T, bh coin.BlockHeader, tx coin.Transaction,
uxo coin.UxArray) {
assert.Equal(t, len(tx.Out), len(uxo))
for i, ux := range uxo {
assert.Equal(t, bh.Time, ux.Head.Time)
assert.Equal(t, bh.BkSeq, ux.Head.BkSeq)
assert.Equal(t, tx.Hash(), ux.Body.SrcTransaction)
assert.Equal(t, tx.Out[i].Address, ux.Body.Address)
assert.Equal(t, tx.Out[i].Coins, ux.Body.Coins)
assert.Equal(t, tx.Out[i].Hours, ux.Body.Hours)
}
}
// Adds a coin.Transaction to the pool
//func (self *UnconfirmedTxnPool) InjectTxn(bc *coin.Blockchain,
// t coin.Transaction, addrs map[cipher.Address]byte, didAnnounce bool) error {
func (self *UnconfirmedTxnPool) InjectTxn(t coin.Transaction) error {
now := time.Now().Unix()
//announcedAt := util.ZeroTime()
ut := UnconfirmedTxn{
Txn: t,
Received: now,
Checked: now,
Announced: 0, //set to 0 until announced
}
self.Txns[t.Hash()] = ut
return nil
}
func assertValidUnspent(t *testing.T, bc *coin.Blockchain,
unspent TxnUnspents, tx coin.Transaction) {
expect := coin.CreateUnspents(bc.Head().Head, tx)
assert.NotEqual(t, len(expect), 0)
sum := 0
for _, uxs := range unspent {
sum += len(uxs)
}
assert.Equal(t, len(expect), sum)
uxs := unspent[tx.Hash()]
for _, ux := range expect {
found := false
for _, u := range uxs {
if u.Hash() == ux.Hash() {
found = true
break
}
}
assert.True(t, found)
}
}
func TransactionToJSON(tx coin.Transaction) string {
var o TransactionJSON
if err := tx.Verify(); err != nil {
log.Panic("Input Transaction Invalid: Cannot serialize to JSON, fails verify")
}
o.Hash = tx.Hash().Hex()
o.InnerHash = tx.InnerHash.Hex()
if tx.InnerHash != tx.HashInner() {
log.Panic("TransactionToJSON called with invalid transaction, inner hash mising")
}
o.Sigs = make([]string, len(tx.Sigs))
o.In = make([]string, len(tx.In))
o.Out = make([]TransactionOutputJSON, len(tx.Out))
for i, sig := range tx.Sigs {
o.Sigs[i] = sig.Hex()
}
for i, x := range tx.In {
o.In[i] = x.Hex() //hash to hex
}
for i, y := range tx.Out {
o.Out[i] = NewTransactionOutputJSON(y, tx.InnerHash)
}
b, err := json.MarshalIndent(o, "", " ")
if err != nil {
log.Panic("Cannot serialize transaction as JSON")
}
return string(b)
}
func TransactionFromJSON(str string) (coin.Transaction, error) {
var TxIn TransactionJSON
err := json.Unmarshal([]byte(str), TxIn)
if err != nil {
errors.New("cannot deserialize")
}
var tx coin.Transaction
tx.Sigs = make([]cipher.Sig, len(TxIn.Sigs))
tx.In = make([]cipher.SHA256, len(TxIn.In))
tx.Out = make([]coin.TransactionOutput, len(TxIn.Out))
for i, _ := range tx.Sigs {
sig2, err := cipher.SigFromHex(TxIn.Sigs[i])
if err != nil {
return coin.Transaction{}, errors.New("invalid signature")
}
tx.Sigs[i] = sig2
}
for i, _ := range tx.In {
hash, err := cipher.SHA256FromHex(TxIn.In[i])
if err != nil {
return coin.Transaction{}, errors.New("invalid signature")
}
tx.In[i] = hash
}
for i, _ := range tx.Out {
out, err := TransactionOutputFromJSON(TxIn.Out[i])
if err != nil {
return coin.Transaction{}, errors.New("invalid output")
}
tx.Out[i] = out
}
tx.Length = uint32(tx.Size())
tx.Type = 0
hash, err := cipher.SHA256FromHex(TxIn.Hash)
if err != nil {
return coin.Transaction{}, errors.New("invalid hash")
}
if hash != tx.Hash() {
}
InnerHash, err := cipher.SHA256FromHex(TxIn.Hash)
if InnerHash != tx.InnerHash {
return coin.Transaction{}, errors.New("inner hash")
}
err = tx.Verify()
if err != nil {
return coin.Transaction{}, errors.New("transaction failed verification")
}
return tx, nil
}
func TestProcessTransactions(t *testing.T) {
ft := FakeTree{}
bc := NewBlockchain(&ft, nil)
bc.CreateGenesisBlock(genAddress, _genCoins, _genTime)
fmt.Println("genesis time:", bc.GetGenesisBlock().Time())
assert.Equal(t, bc.Len(), uint64(1))
_, ux := addBlockToBlockchain(t, bc)
assert.Equal(t, bc.Len(), uint64(3))
// Invalid, no transactions in block
// arbitrating=false
txns, err := bc.processTransactions(coin.Transactions{}, false)
assert.Nil(t, txns)
assertError(t, err, "No transactions")
// arbitrating=true
txns, err = bc.processTransactions(coin.Transactions{}, true)
assert.Equal(t, len(txns), 0)
assert.Nil(t, err)
// Invalid, txn.Verify() fails
// TODO -- combine all txn.Verify() failures into one test
// method, and call it from here, from ExecuteBlock(), from
// Verify(), from VerifyTransaction()
txns = coin.Transactions{}
txn := coin.Transaction{}
txn.PushInput(ux.Hash())
txn.PushOutput(genAddress, 777, 100)
txn.SignInputs([]cipher.SecKey{genSecret})
txn.UpdateHeader()
txns = append(txns, txn)
// arbitrating=false
txns2, err := bc.processTransactions(txns, false)
assert.Nil(t, txns2)
assertError(t, err,
"Transaction outputs must be multiple of 1e6 base units")
// arbitrating=true
txns2, err = bc.processTransactions(txns, true)
assert.NotNil(t, txns2)
assert.Nil(t, err)
assert.Equal(t, len(txns2), 0)
// Invalid, duplicate unspent will be created by these txns
txn, _ = makeTransactionForChainWithHoursFee(t, bc, ux, genSecret, 100,
100)
txns = coin.Transactions{txn, txn}
// arbitrating=false
txns2, err = bc.processTransactions(txns, false)
assertError(t, err, "Duplicate unspent output across transactions")
assert.Nil(t, txns2)
// arbitrating=true. One of the offending transactions should be removed
txns2, err = bc.processTransactions(txns, true)
assert.Nil(t, err)
assert.Equal(t, len(txns2), 1)
assert.Equal(t, txns2[0], txn)
// Check that a new output will not collide with the existing pool
txn, _ = makeTransactionForChainWithHoursFee(t, bc, ux, genSecret, 100,
100)
txns = coin.Transactions{txn}
uxb := coin.UxBody{
SrcTransaction: txn.Hash(),
Coins: txn.Out[0].Coins,
Hours: txn.Out[0].Hours,
Address: txn.Out[0].Address,
}
bc.GetUnspent().Add(coin.UxOut{Body: uxb})
// arbitrating=false
txns2, err = bc.processTransactions(txns, false)
assertError(t, err, "New unspent collides with existing unspent")
assert.Nil(t, txns2)
// arbitrating=true
txns2, err = bc.processTransactions(txns, true)
assert.Equal(t, len(txns2), 0)
assert.NotNil(t, txns2)
assert.Nil(t, err)
// Spending of duplicate inputs being spent across txns
txn, _ = makeTransactionForChainWithHoursFee(t, bc, ux, genSecret, 100,
100)
txn2, _ := makeTransactionForChainWithHoursFee(t, bc, ux, genSecret, 100,
100)
txn2.Out = nil
txn2.PushOutput(makeAddress(), 1e6, 100)
txn2.PushOutput(makeAddress(), ux.Body.Coins-1e6, 100)
txn2.Sigs = nil
txn2.SignInputs([]cipher.SecKey{genSecret})
txn2.UpdateHeader()
txns = coin.SortTransactions(coin.Transactions{txn, txn2}, bc.TransactionFee)
// arbitrating=false
txns2, err = bc.processTransactions(txns, false)
assertError(t, err, "Cannot spend output twice in the same block")
assert.Nil(t, txns2)
// arbitrating=true
txns2, err = bc.processTransactions(txns, true)
assert.Nil(t, err)
assert.Equal(t, len(txns2), 1)
assert.Equal(t, txns2[0], txns[0])
}
func TestExecuteBlock(t *testing.T) {
ft := FakeTree{}
bc := NewBlockchain(&ft, nil)
bc.CreateGenesisBlock(genAddress, _genCoins, _genTime)
assert.Equal(t, bc.Len(), uint64(1))
_, ux := addBlockToBlockchain(t, bc)
assert.Equal(t, bc.Len(), uint64(3))
// Invalid block returns error
b := coin.Block{}
uxs, err := bc.ExecuteBlock(&b)
assert.NotNil(t, err)
assert.Nil(t, uxs)
// Valid block, spends are removed from the unspent pool, new ones are
// added. Blocks is updated, and new unspents are returns
assert.Equal(t, bc.Len(), uint64(3))
assert.Equal(t, len(bc.GetUnspent().Pool), 2)
spuxs := splitUnspent(t, bc, ux)
tx := coin.Transaction{}
tx.PushInput(spuxs[0].Hash())
coins := spuxs[0].Body.Coins
extra := coins % 4e6
coins = (coins - extra) / 4
tx.PushOutput(genAddress, coins+extra, spuxs[0].Body.Hours/5)
tx.PushOutput(genAddress, coins, spuxs[0].Body.Hours/6)
tx.PushOutput(genAddress, coins, spuxs[0].Body.Hours/7)
tx.PushOutput(genAddress, coins, spuxs[0].Body.Hours/8)
tx.SignInputs([]cipher.SecKey{genSecret})
tx.UpdateHeader()
tx2 := coin.Transaction{}
tx2.PushInput(spuxs[1].Hash())
tx2.PushOutput(genAddress, spuxs[1].Body.Coins, spuxs[1].Body.Hours/10)
tx2.SignInputs([]cipher.SecKey{genSecret})
tx2.UpdateHeader()
txns := coin.Transactions{tx, tx2}
sTxns := coin.NewSortableTransactions(txns, bc.TransactionFee)
unswapped := sTxns.IsSorted()
txns = coin.SortTransactions(txns, bc.TransactionFee)
assert.Nil(t, bc.verifyTransactions(txns))
seq := bc.Head().Head.BkSeq
b, err = bc.NewBlockFromTransactions(txns, bc.Time()+_incTime)
assert.Equal(t, b.Head.BkSeq, seq+1)
assert.Nil(t, err)
assert.Equal(t, len(b.Body.Transactions), 2)
assert.Equal(t, b.Body.Transactions, txns)
uxs, err = bc.ExecuteBlock(&b)
assert.Nil(t, err)
assert.Equal(t, len(uxs), 5)
// Check that all unspents look correct and are in the unspent pool
txOuts := []coin.TransactionOutput{}
if unswapped {
txOuts = append(txOuts, tx.Out...)
txOuts = append(txOuts, tx2.Out...)
} else {
txOuts = append(txOuts, tx2.Out...)
txOuts = append(txOuts, tx.Out...)
}
for i, ux := range uxs {
if unswapped {
if i < len(tx.Out) {
assert.Equal(t, ux.Body.SrcTransaction, tx.Hash())
} else {
assert.Equal(t, ux.Body.SrcTransaction, tx2.Hash())
}
} else {
if i < len(tx2.Out) {
assert.Equal(t, ux.Body.SrcTransaction, tx2.Hash())
} else {
assert.Equal(t, ux.Body.SrcTransaction, tx.Hash())
}
}
assert.Equal(t, ux.Body.Address, txOuts[i].Address)
assert.Equal(t, ux.Body.Coins, txOuts[i].Coins)
assert.Equal(t, ux.Body.Hours, txOuts[i].Hours)
assert.Equal(t, ux.Head.BkSeq, b.Head.BkSeq)
assert.Equal(t, ux.Head.Time, b.Head.Time)
assert.True(t, bc.GetUnspent().Has(ux.Hash()))
}
// Check that all spends are no longer in the pool
txIns := []cipher.SHA256{}
txIns = append(txIns, tx.In...)
txIns = append(txIns, tx2.In...)
for _, ux := range txIns {
assert.False(t, bc.GetUnspent().Has(ux))
}
}