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177 lines
4.3 KiB
177 lines
4.3 KiB
package state
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import (
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"github.com/tendermint/go-ed25519"
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. "github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/blocks"
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. "github.com/tendermint/tendermint/common"
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)
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const (
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AccountStatusNominal = byte(0x00)
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AccountStatusBonded = byte(0x01)
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AccountStatusUnbonding = byte(0x02)
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AccountStatusDupedOut = byte(0x03)
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)
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type Account struct {
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Id uint64 // Numeric id of account, incrementing.
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PubKey []byte
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}
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func ReadAccount(r io.Reader, n *int64, err *error) Account {
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return Account{
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Id: ReadUInt64(r, n, err),
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PubKey: ReadByteSlice(r, n, err),
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}
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}
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func (account Account) WriteTo(w io.Writer) (n int64, err error) {
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WriteUInt64(w, account.Id, &n, &err)
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WriteByteSlice(w, account.PubKey, &n, &err)
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return
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}
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func (account Account) VerifyBytes(msg []byte, sig Signature) bool {
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if sig.SignerId != account.Id {
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panic("account.id doesn't match sig.signerid")
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}
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if len(sig.Bytes) == 0 {
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panic("signature is empty")
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}
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v1 := &ed25519.Verify{
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Message: msg,
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PubKey: account.PubKey,
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Signature: sig.Bytes,
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}
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ok := ed25519.VerifyBatch([]*ed25519.Verify{v1})
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return ok
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}
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func (account Account) Verify(o Signable) bool {
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sig := o.GetSignature()
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o.SetSignature(Signature{}) // clear
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msg := BinaryBytes(o)
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o.SetSignature(sig) // restore
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return account.VerifyBytes(msg, sig)
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}
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func (account Account) String() string {
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return fmt.Sprintf("Account{%v:%X}", account.Id, account.PubKey[:6])
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}
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//-----------------------------------------------------------------------------
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type AccountDetail struct {
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Account
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Sequence uint
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Balance uint64
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Status byte
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}
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func ReadAccountDetail(r io.Reader, n *int64, err *error) *AccountDetail {
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return &AccountDetail{
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Account: ReadAccount(r, n, err),
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Sequence: ReadUVarInt(r, n, err),
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Balance: ReadUInt64(r, n, err),
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Status: ReadByte(r, n, err),
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}
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}
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func (accDet *AccountDetail) WriteTo(w io.Writer) (n int64, err error) {
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WriteBinary(w, accDet.Account, &n, &err)
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WriteUVarInt(w, accDet.Sequence, &n, &err)
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WriteUInt64(w, accDet.Balance, &n, &err)
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WriteByte(w, accDet.Status, &n, &err)
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return
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}
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func (accDet *AccountDetail) String() string {
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return fmt.Sprintf("AccountDetail{%v:%X Sequence:%v Balance:%v Status:%X}",
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accDet.Id, accDet.PubKey, accDet.Sequence, accDet.Balance, accDet.Status)
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}
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func (accDet *AccountDetail) Copy() *AccountDetail {
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accDetCopy := *accDet
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return &accDetCopy
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}
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//-------------------------------------
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var AccountDetailCodec = accountDetailCodec{}
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type accountDetailCodec struct{}
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func (abc accountDetailCodec) Encode(accDet interface{}, w io.Writer, n *int64, err *error) {
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WriteBinary(w, accDet.(*AccountDetail), n, err)
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}
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func (abc accountDetailCodec) Decode(r io.Reader, n *int64, err *error) interface{} {
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return ReadAccountDetail(r, n, err)
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}
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func (abc accountDetailCodec) Compare(o1 interface{}, o2 interface{}) int {
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panic("AccountDetailCodec.Compare not implemented")
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}
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//-----------------------------------------------------------------------------
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type PrivAccount struct {
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Account
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PrivKey []byte
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}
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// Generates a new account with private key.
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// The Account.Id is empty since it isn't in the blockchain.
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func GenPrivAccount() *PrivAccount {
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privKey := CRandBytes(32)
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pubKey := ed25519.MakePubKey(privKey)
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return &PrivAccount{
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Account: Account{
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Id: uint64(0),
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PubKey: pubKey,
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},
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PrivKey: privKey,
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}
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}
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// The Account.Id is empty since it isn't in the blockchain.
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func PrivAccountFromJSON(jsonBlob []byte) (privAccount *PrivAccount) {
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err := json.Unmarshal(jsonBlob, &privAccount)
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if err != nil {
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Panicf("Couldn't read PrivAccount: %v", err)
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}
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return
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}
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// The Account.Id is empty since it isn't in the blockchain.
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func PrivAccountFromFile(file string) *PrivAccount {
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jsonBlob, err := ioutil.ReadFile(file)
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if err != nil {
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Panicf("Couldn't read PrivAccount from file: %v", err)
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}
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return PrivAccountFromJSON(jsonBlob)
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}
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func (pa *PrivAccount) SignBytes(msg []byte) Signature {
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signature := ed25519.SignMessage(msg, pa.PrivKey, pa.PubKey)
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sig := Signature{
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SignerId: pa.Id,
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Bytes: signature,
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}
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return sig
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}
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func (pa *PrivAccount) Sign(o Signable) {
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if !o.GetSignature().IsZero() {
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panic("Cannot sign: already signed")
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}
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msg := BinaryBytes(o)
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sig := pa.SignBytes(msg)
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o.SetSignature(sig)
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}
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