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210 lines
5.4 KiB
210 lines
5.4 KiB
package block
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import (
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"errors"
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"io"
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"reflect"
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. "github.com/tendermint/tendermint/account"
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. "github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/common"
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)
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var (
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ErrTxInvalidAddress = errors.New("Error invalid address")
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ErrTxDuplicateAddress = errors.New("Error duplicate address")
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ErrTxInvalidAmount = errors.New("Error invalid amount")
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ErrTxInsufficientFunds = errors.New("Error insufficient funds")
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ErrTxUnknownPubKey = errors.New("Error unknown pubkey")
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ErrTxInvalidPubKey = errors.New("Error invalid pubkey")
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ErrTxRedeclaredPubKey = errors.New("Error redeclared pubkey")
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ErrTxInvalidSignature = errors.New("Error invalid signature")
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ErrTxInvalidSequence = errors.New("Error invalid sequence")
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)
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/*
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Tx (Transaction) is an atomic operation on the ledger state.
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Account Txs:
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- SendTx Send coins to address
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Validation Txs:
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- BondTx New validator posts a bond
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- UnbondTx Validator leaves
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- DupeoutTx Validator dupes out (equivocates)
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*/
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type Tx interface {
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WriteSignBytes(w io.Writer, n *int64, err *error)
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}
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// Types of Tx implementations
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const (
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// Account transactions
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TxTypeSend = byte(0x01)
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// Validation transactions
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TxTypeBond = byte(0x11)
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TxTypeUnbond = byte(0x12)
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TxTypeRebond = byte(0x13)
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TxTypeDupeout = byte(0x14)
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)
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//-------------------------------------
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// for binary.readReflect
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func TxDecoder(r Unreader, n *int64, err *error) interface{} {
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switch t := PeekByte(r, n, err); t {
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case TxTypeSend:
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return ReadBinary(&SendTx{}, r, n, err)
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case TxTypeBond:
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return ReadBinary(&BondTx{}, r, n, err)
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case TxTypeUnbond:
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return ReadBinary(&UnbondTx{}, r, n, err)
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case TxTypeRebond:
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return ReadBinary(&RebondTx{}, r, n, err)
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case TxTypeDupeout:
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return ReadBinary(&DupeoutTx{}, r, n, err)
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default:
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*err = Errorf("Unknown Tx type %X", t)
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return nil
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}
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}
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var _ = RegisterType(&TypeInfo{
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Type: reflect.TypeOf((*Tx)(nil)).Elem(),
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Decoder: TxDecoder,
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})
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//-----------------------------------------------------------------------------
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type TxInput struct {
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Address []byte // Hash of the PubKey
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Amount uint64 // Must not exceed account balance
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Sequence uint // Must be 1 greater than the last committed TxInput
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Signature Signature // Depends on the PubKey type and the whole Tx
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PubKey PubKey // Must not be nil, may be PubKeyNil.
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}
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func (txIn *TxInput) ValidateBasic() error {
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if len(txIn.Address) != 20 {
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return ErrTxInvalidAddress
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}
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if txIn.Amount == 0 {
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return ErrTxInvalidAmount
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}
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return nil
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}
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func (txIn *TxInput) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteByteSlice(txIn.Address, w, n, err)
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WriteUint64(txIn.Amount, w, n, err)
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WriteUvarint(txIn.Sequence, w, n, err)
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}
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//-----------------------------------------------------------------------------
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type TxOutput struct {
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Address []byte // Hash of the PubKey
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Amount uint64 // The sum of all outputs must not exceed the inputs.
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}
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func (txOut *TxOutput) ValidateBasic() error {
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if len(txOut.Address) != 20 {
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return ErrTxInvalidAddress
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}
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if txOut.Amount == 0 {
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return ErrTxInvalidAmount
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}
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return nil
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}
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func (txOut *TxOutput) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteByteSlice(txOut.Address, w, n, err)
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WriteUint64(txOut.Amount, w, n, err)
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}
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//-----------------------------------------------------------------------------
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type SendTx struct {
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Inputs []*TxInput
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Outputs []*TxOutput
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}
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func (tx *SendTx) TypeByte() byte { return TxTypeSend }
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func (tx *SendTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteUvarint(uint(len(tx.Inputs)), w, n, err)
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for _, in := range tx.Inputs {
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in.WriteSignBytes(w, n, err)
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}
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WriteUvarint(uint(len(tx.Outputs)), w, n, err)
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for _, out := range tx.Outputs {
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out.WriteSignBytes(w, n, err)
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}
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}
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//-----------------------------------------------------------------------------
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type BondTx struct {
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PubKey PubKeyEd25519
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Inputs []*TxInput
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UnbondTo []*TxOutput
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}
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func (tx *BondTx) TypeByte() byte { return TxTypeBond }
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func (tx *BondTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteBinary(tx.PubKey, w, n, err)
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WriteUvarint(uint(len(tx.Inputs)), w, n, err)
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for _, in := range tx.Inputs {
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in.WriteSignBytes(w, n, err)
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}
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WriteUvarint(uint(len(tx.UnbondTo)), w, n, err)
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for _, out := range tx.UnbondTo {
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out.WriteSignBytes(w, n, err)
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}
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}
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//-----------------------------------------------------------------------------
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type UnbondTx struct {
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Address []byte
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Height uint
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Signature SignatureEd25519
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}
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func (tx *UnbondTx) TypeByte() byte { return TxTypeUnbond }
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func (tx *UnbondTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteByteSlice(tx.Address, w, n, err)
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WriteUvarint(tx.Height, w, n, err)
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}
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//-----------------------------------------------------------------------------
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type RebondTx struct {
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Address []byte
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Height uint
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Signature SignatureEd25519
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}
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func (tx *RebondTx) TypeByte() byte { return TxTypeRebond }
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func (tx *RebondTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
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WriteByteSlice(tx.Address, w, n, err)
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WriteUvarint(tx.Height, w, n, err)
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}
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//-----------------------------------------------------------------------------
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type DupeoutTx struct {
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Address []byte
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VoteA Vote
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VoteB Vote
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}
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func (tx *DupeoutTx) TypeByte() byte { return TxTypeDupeout }
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func (tx *DupeoutTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
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panic("DupeoutTx has no sign bytes")
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}
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