func FactoidAddInput(trans fct.ITransaction, key string, address fct.IAddress, amount uint64) error {
ok := Utility.IsValidKey(key)
if !ok {
return fmt.Errorf("Invalid name for transaction")
}
// First look if this is really an update
for _, input := range trans.GetInputs() {
if input.GetAddress().IsSameAs(address) {
input.SetAmount(amount)
return nil
}
}
// Add our new input
err := factoidState.GetWallet().AddInput(trans, address, amount)
if err != nil {
return fmt.Errorf("Failed to add input")
}
// Update our map with our new transaction to the same key. Otherwise, all
// of our work will go away!
factoidState.GetDB().PutRaw([]byte(fct.DB_BUILD_TRANS), []byte(key), trans)
return nil
}
func (w *SCWallet) SignInputs(trans fct.ITransaction) (bool, error) {
data, err := trans.MarshalBinarySig() // Get the part of the transaction we sign
if err != nil {
return false, err
}
var numSigs int = 0
inputs := trans.GetInputs()
rcds := trans.GetRCDs()
for i, rcd := range rcds {
rcd1, ok := rcd.(*fct.RCD_1)
if ok {
pub := rcd1.GetPublicKey()
we := w.db.GetRaw([]byte(fct.W_ADDRESS_PUB_KEY), pub).(*WalletEntry)
if we != nil {
var pri [fct.SIGNATURE_LENGTH]byte
copy(pri[:], we.private[0])
bsig := ed25519.Sign(&pri, data)
sig := new(fct.Signature)
sig.SetSignature(bsig[:])
sigblk := new(fct.SignatureBlock)
sigblk.AddSignature(sig)
trans.SetSignatureBlock(i, sigblk)
numSigs += 1
}
}
}
return numSigs == len(inputs), nil
}
func filtertransaction(trans fct.ITransaction, addresses [][]byte) bool {
if addresses == nil || len(addresses) == 0 {
return true
}
if len(trans.GetInputs()) == 0 &&
len(trans.GetOutputs()) == 0 {
return false
}
if len(addresses) == 1 && bytes.Equal(addresses[0], trans.GetSigHash().Bytes()) {
return true
}
Search:
for _, adr := range addresses {
for _, in := range trans.GetInputs() {
if bytes.Equal(adr, in.GetAddress().Bytes()) {
continue Search
}
}
for _, out := range trans.GetOutputs() {
if bytes.Equal(adr, out.GetAddress().Bytes()) {
continue Search
}
}
for _, ec := range trans.GetECOutputs() {
if bytes.Equal(adr, ec.GetAddress().Bytes()) {
continue Search
}
}
return false
}
return true
}
// Assumes validation has already been done.
func (fs *FactoidState) UpdateTransaction(trans fct.ITransaction) error {
for _, input := range trans.GetInputs() {
err := fs.UpdateBalance(input.GetAddress(), -int64(input.GetAmount()))
if err != nil {
return err
}
}
for _, output := range trans.GetOutputs() {
err := fs.UpdateBalance(output.GetAddress(), int64(output.GetAmount()))
if err != nil {
return err
}
}
for _, ecoutput := range trans.GetECOutputs() {
err := fs.UpdateECBalance(ecoutput.GetAddress(), int64(ecoutput.GetAmount()))
if err != nil {
return err
}
}
fs.numTransactions++
cp.CP.AddUpdate(
"transprocessed", // tag
"status", // Category
fmt.Sprintf("Factoid Transactions Processed: %d", fs.numTransactions), // Title
"", // Message
0) // When to expire the message; 0 is never
return nil
}
func PrtTrans(t fct.ITransaction) {
fmt.Println("Transaction")
for _, input := range t.GetInputs() {
fmt.Println("in ", input.GetAddress(), input.GetAmount(), fs.GetBalance(input.GetAddress()))
}
for _, output := range t.GetOutputs() {
fmt.Println("out", output.GetAddress(), output.GetAmount(), fs.GetBalance(output.GetAddress()))
}
for _, ecoutput := range t.GetECOutputs() {
fmt.Println("ec ", ecoutput.GetAddress(), ecoutput.GetAmount(), fs.GetECBalance(ecoutput.GetAddress()))
}
}
func FactoidAddFee(trans fct.ITransaction, key string, address fct.IAddress, name string) (uint64, error) {
{
ins, err := trans.TotalInputs()
if err != nil {
return 0, err
}
outs, err := trans.TotalOutputs()
if err != nil {
return 0, err
}
ecs, err := trans.TotalECs()
if err != nil {
return 0, err
}
if ins != outs+ecs {
return 0, fmt.Errorf("Inputs and outputs don't add up")
}
}
ok := Utility.IsValidKey(key)
if !ok {
return 0, fmt.Errorf("Invalid name for transaction")
}
fee, err := GetFee()
if err != nil {
return 0, err
}
transfee, err := trans.CalculateFee(uint64(fee))
if err != nil {
return 0, err
}
adr, err := factoidState.GetWallet().GetAddressHash(address)
if err != nil {
return 0, err
}
for _, input := range trans.GetInputs() {
if input.GetAddress().IsSameAs(adr) {
amt, err := fct.ValidateAmounts(input.GetAmount(), transfee)
if err != nil {
return 0, err
}
input.SetAmount(amt)
return transfee, nil
}
}
return 0, fmt.Errorf("%s is not an input to the transaction.", key)
}
// Returns an error message about what is wrong with the transaction if it is
// invalid, otherwise you are good to go.
func (fs *FactoidState) Validate(index int, trans fct.ITransaction) error {
err := fs.currentBlock.ValidateTransaction(index, trans)
if err != nil {
return err
}
var sums = make(map[[32]byte]uint64, 10) // Look at the sum of an address's inputs
for _, input := range trans.GetInputs() { // to a transaction.
bal, err := fct.ValidateAmounts(sums[input.GetAddress().Fixed()], input.GetAmount())
if err != nil {
return err
}
if bal > fs.GetBalance(input.GetAddress()) {
return fmt.Errorf("Not enough funds in input addresses for the transaction")
}
sums[input.GetAddress().Fixed()] = bal
}
return nil
}
// Returns an error message about what is wrong with the transaction if it is
// invalid, otherwise you are good to go.
func (fs *AssetState) Validate(trans fct.ITransaction) error {
if err := trans.ValidateSignatures(); err != nil {
return err
}
var sums = make(map[fct.IAddress]uint64, 10)
for _, input := range trans.GetInputs() {
bal, err := fct.ValidateAmounts(
sums[input.GetAddress()], // Will be zero the first time around
input.GetAmount()) // Get this amount, check against bounds
if err != nil {
return err
}
if bal > fs.GetBalance(input.GetAddress()) {
return fmt.Errorf("Not enough funds in input addresses for the transaction")
}
sums[input.GetAddress()] = bal
}
return nil
}
// Add the first transaction of a block. This transaction makes the
// payout to the servers, so it has no inputs. This transaction must
// be deterministic so that all servers will know and expect its output.
func (b *FBlock) AddCoinbase(trans fct.ITransaction) error {
b.BodyMR = nil
if len(b.Transactions) != 0 {
return fmt.Errorf("The coinbase transaction must be the first transaction")
}
if len(trans.GetInputs()) != 0 {
return fmt.Errorf("The coinbase transaction cannot have any inputs")
}
if len(trans.GetECOutputs()) != 0 {
return fmt.Errorf("The coinbase transaction cannot buy Entry Credits")
}
if len(trans.GetRCDs()) != 0 {
return fmt.Errorf("The coinbase transaction cannot have anyRCD blocks")
}
if len(trans.GetSignatureBlocks()) != 0 {
return fmt.Errorf("The coinbase transaction is not signed")
}
// TODO Add check here for the proper payouts.
b.Transactions = append(b.Transactions, trans)
return nil
}