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375 lines
12 KiB
375 lines
12 KiB
package types
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import (
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"encoding/json"
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"errors"
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"io"
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"github.com/tendermint/tendermint/Godeps/_workspace/src/golang.org/x/crypto/ripemd160"
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acm "github.com/tendermint/tendermint/account"
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. "github.com/tendermint/tendermint/common"
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ptypes "github.com/tendermint/tendermint/permission/types"
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"github.com/tendermint/tendermint/wire"
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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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ErrTxInsufficientGasPrice = errors.New("Error insufficient gas price")
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ErrTxUnknownPubKey = errors.New("Error unknown pubkey")
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ErrTxInvalidPubKey = errors.New("Error invalid pubkey")
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ErrTxInvalidSignature = errors.New("Error invalid signature")
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ErrTxPermissionDenied = errors.New("Error permission denied")
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)
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type ErrTxInvalidString struct {
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Msg string
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}
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func (e ErrTxInvalidString) Error() string {
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return e.Msg
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}
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type ErrTxInvalidSequence struct {
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Got int
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Expected int
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}
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func (e ErrTxInvalidSequence) Error() string {
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return Fmt("Error invalid sequence. Got %d, expected %d", e.Got, e.Expected)
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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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- CallTx Send a msg to a contract that runs in the vm
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- NameTx Store some value under a name in the global namereg
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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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Admin Txs:
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- PermissionsTx
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*/
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type Tx interface {
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WriteSignBytes(chainID string, 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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TxTypeCall = byte(0x02)
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TxTypeName = byte(0x03)
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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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// Admin transactions
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TxTypePermissions = byte(0x20)
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)
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// for wire.readReflect
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var _ = wire.RegisterInterface(
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struct{ Tx }{},
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wire.ConcreteType{&SendTx{}, TxTypeSend},
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wire.ConcreteType{&CallTx{}, TxTypeCall},
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wire.ConcreteType{&NameTx{}, TxTypeName},
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wire.ConcreteType{&BondTx{}, TxTypeBond},
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wire.ConcreteType{&UnbondTx{}, TxTypeUnbond},
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wire.ConcreteType{&RebondTx{}, TxTypeRebond},
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wire.ConcreteType{&DupeoutTx{}, TxTypeDupeout},
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wire.ConcreteType{&PermissionsTx{}, TxTypePermissions},
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)
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//-----------------------------------------------------------------------------
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type TxInput struct {
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Address []byte `json:"address"` // Hash of the PubKey
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Amount int64 `json:"amount"` // Must not exceed account balance
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Sequence int `json:"sequence"` // Must be 1 greater than the last committed TxInput
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Signature acm.Signature `json:"signature"` // Depends on the PubKey type and the whole Tx
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PubKey acm.PubKey `json:"pub_key"` // Must not be nil, may be nil
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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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wire.WriteTo([]byte(Fmt(`{"address":"%X","amount":%v,"sequence":%v}`, txIn.Address, txIn.Amount, txIn.Sequence)), w, n, err)
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}
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func (txIn *TxInput) String() string {
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return Fmt("TxInput{%X,%v,%v,%v,%v}", txIn.Address, txIn.Amount, txIn.Sequence, txIn.Signature, txIn.PubKey)
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}
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//-----------------------------------------------------------------------------
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type TxOutput struct {
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Address []byte `json:"address"` // Hash of the PubKey
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Amount int64 `json:"amount"` // 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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wire.WriteTo([]byte(Fmt(`{"address":"%X","amount":%v}`, txOut.Address, txOut.Amount)), w, n, err)
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}
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func (txOut *TxOutput) String() string {
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return Fmt("TxOutput{%X,%v}", txOut.Address, txOut.Amount)
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}
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//-----------------------------------------------------------------------------
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type SendTx struct {
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Inputs []*TxInput `json:"inputs"`
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Outputs []*TxOutput `json:"outputs"`
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}
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func (tx *SendTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"inputs":[`, TxTypeSend)), w, n, err)
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for i, in := range tx.Inputs {
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in.WriteSignBytes(w, n, err)
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if i != len(tx.Inputs)-1 {
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wire.WriteTo([]byte(","), w, n, err)
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}
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}
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wire.WriteTo([]byte(`],"outputs":[`), w, n, err)
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for i, out := range tx.Outputs {
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out.WriteSignBytes(w, n, err)
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if i != len(tx.Outputs)-1 {
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wire.WriteTo([]byte(","), w, n, err)
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}
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}
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wire.WriteTo([]byte(`]}]}`), w, n, err)
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}
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func (tx *SendTx) String() string {
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return Fmt("SendTx{%v -> %v}", tx.Inputs, tx.Outputs)
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}
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//-----------------------------------------------------------------------------
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type CallTx struct {
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Input *TxInput `json:"input"`
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Address []byte `json:"address"`
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GasLimit int64 `json:"gas_limit"`
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Fee int64 `json:"fee"`
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Data []byte `json:"data"`
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}
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func (tx *CallTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"address":"%X","data":"%X"`, TxTypeCall, tx.Address, tx.Data)), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"fee":%v,"gas_limit":%v,"input":`, tx.Fee, tx.GasLimit)), w, n, err)
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tx.Input.WriteSignBytes(w, n, err)
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wire.WriteTo([]byte(`}]}`), w, n, err)
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}
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func (tx *CallTx) String() string {
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return Fmt("CallTx{%v -> %x: %x}", tx.Input, tx.Address, tx.Data)
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}
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func NewContractAddress(caller []byte, nonce int) []byte {
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temp := make([]byte, 32+8)
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copy(temp, caller)
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PutInt64BE(temp[32:], int64(nonce))
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hasher := ripemd160.New()
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hasher.Write(temp) // does not error
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return hasher.Sum(nil)
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}
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//-----------------------------------------------------------------------------
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type NameTx struct {
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Input *TxInput `json:"input"`
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Name string `json:"name"`
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Data string `json:"data"`
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Fee int64 `json:"fee"`
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}
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func (tx *NameTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"data":%s,"fee":%v`, TxTypeName, jsonEscape(tx.Data), tx.Fee)), w, n, err)
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wire.WriteTo([]byte(`,"input":`), w, n, err)
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tx.Input.WriteSignBytes(w, n, err)
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wire.WriteTo([]byte(Fmt(`,"name":%s`, jsonEscape(tx.Name))), w, n, err)
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wire.WriteTo([]byte(`}]}`), w, n, err)
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}
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func (tx *NameTx) ValidateStrings() error {
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if len(tx.Name) == 0 {
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return ErrTxInvalidString{"Name must not be empty"}
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}
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if len(tx.Name) > MaxNameLength {
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return ErrTxInvalidString{Fmt("Name is too long. Max %d bytes", MaxNameLength)}
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}
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if len(tx.Data) > MaxDataLength {
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return ErrTxInvalidString{Fmt("Data is too long. Max %d bytes", MaxDataLength)}
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}
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if !validateNameRegEntryName(tx.Name) {
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return ErrTxInvalidString{Fmt("Invalid characters found in NameTx.Name (%s). Only alphanumeric, underscores, dashes, forward slashes, and @ are allowed", tx.Name)}
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}
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if !validateNameRegEntryData(tx.Data) {
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return ErrTxInvalidString{Fmt("Invalid characters found in NameTx.Data (%s). Only the kind of things found in a JSON file are allowed", tx.Data)}
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}
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return nil
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}
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func (tx *NameTx) String() string {
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return Fmt("NameTx{%v -> %s: %s}", tx.Input, tx.Name, tx.Data)
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}
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//-----------------------------------------------------------------------------
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type BondTx struct {
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PubKey acm.PubKeyEd25519 `json:"pub_key"`
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Signature acm.SignatureEd25519 `json:"signature"`
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Inputs []*TxInput `json:"inputs"`
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UnbondTo []*TxOutput `json:"unbond_to"`
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}
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func (tx *BondTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"inputs":[`, TxTypeBond)), w, n, err)
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for i, in := range tx.Inputs {
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in.WriteSignBytes(w, n, err)
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if i != len(tx.Inputs)-1 {
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wire.WriteTo([]byte(","), w, n, err)
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}
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}
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wire.WriteTo([]byte(Fmt(`],"pub_key":`)), w, n, err)
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wire.WriteTo(wire.JSONBytes(tx.PubKey), w, n, err)
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wire.WriteTo([]byte(`,"unbond_to":[`), w, n, err)
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for i, out := range tx.UnbondTo {
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out.WriteSignBytes(w, n, err)
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if i != len(tx.UnbondTo)-1 {
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wire.WriteTo([]byte(","), w, n, err)
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}
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}
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wire.WriteTo([]byte(`]}]}`), w, n, err)
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}
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func (tx *BondTx) String() string {
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return Fmt("BondTx{%v: %v -> %v}", tx.PubKey, tx.Inputs, tx.UnbondTo)
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}
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//-----------------------------------------------------------------------------
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type UnbondTx struct {
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Address []byte `json:"address"`
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Height int `json:"height"`
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Signature acm.SignatureEd25519 `json:"signature"`
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}
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func (tx *UnbondTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"address":"%X","height":%v}]}`, TxTypeUnbond, tx.Address, tx.Height)), w, n, err)
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}
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func (tx *UnbondTx) String() string {
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return Fmt("UnbondTx{%X,%v,%v}", tx.Address, tx.Height, tx.Signature)
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}
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//-----------------------------------------------------------------------------
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type RebondTx struct {
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Address []byte `json:"address"`
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Height int `json:"height"`
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Signature acm.SignatureEd25519 `json:"signature"`
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}
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func (tx *RebondTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"address":"%X","height":%v}]}`, TxTypeRebond, tx.Address, tx.Height)), w, n, err)
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}
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func (tx *RebondTx) String() string {
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return Fmt("RebondTx{%X,%v,%v}", tx.Address, tx.Height, tx.Signature)
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}
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//-----------------------------------------------------------------------------
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type DupeoutTx struct {
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Address []byte `json:"address"`
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VoteA Vote `json:"vote_a"`
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VoteB Vote `json:"vote_b"`
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}
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func (tx *DupeoutTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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PanicSanity("DupeoutTx has no sign bytes")
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}
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func (tx *DupeoutTx) String() string {
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return Fmt("DupeoutTx{%X,%v,%v}", tx.Address, tx.VoteA, tx.VoteB)
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}
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//-----------------------------------------------------------------------------
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type PermissionsTx struct {
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Input *TxInput `json:"input"`
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PermArgs ptypes.PermArgs `json:"args"`
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}
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func (tx *PermissionsTx) WriteSignBytes(chainID string, w io.Writer, n *int64, err *error) {
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wire.WriteTo([]byte(Fmt(`{"chain_id":%s`, jsonEscape(chainID))), w, n, err)
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wire.WriteTo([]byte(Fmt(`,"tx":[%v,{"args":"`, TxTypePermissions)), w, n, err)
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wire.WriteJSON(tx.PermArgs, w, n, err)
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wire.WriteTo([]byte(`","input":`), w, n, err)
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tx.Input.WriteSignBytes(w, n, err)
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wire.WriteTo([]byte(`}]}`), w, n, err)
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}
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func (tx *PermissionsTx) String() string {
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return Fmt("PermissionsTx{%v -> %v}", tx.Input, tx.PermArgs)
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}
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//-----------------------------------------------------------------------------
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// This should match the leaf hashes of Block.Data.Hash()'s SimpleMerkleTree.
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func TxID(chainID string, tx Tx) []byte {
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signBytes := acm.SignBytes(chainID, tx)
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return wire.BinaryRipemd160(signBytes)
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}
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//--------------------------------------------------------------------------------
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// Contract: This function is deterministic and completely reversible.
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func jsonEscape(str string) string {
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escapedBytes, err := json.Marshal(str)
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if err != nil {
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PanicSanity(Fmt("Error json-escaping a string", str))
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}
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return string(escapedBytes)
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}
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