You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.1 KiB
123 lines
3.1 KiB
package types
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"time"
|
|
|
|
crypto "github.com/tendermint/tendermint/crypto"
|
|
cmn "github.com/tendermint/tendermint/libs/common"
|
|
)
|
|
|
|
const (
|
|
// MaxVoteBytes is a maximum vote size (including amino overhead).
|
|
MaxVoteBytes = 170
|
|
)
|
|
|
|
var (
|
|
ErrVoteUnexpectedStep = errors.New("Unexpected step")
|
|
ErrVoteInvalidValidatorIndex = errors.New("Invalid validator index")
|
|
ErrVoteInvalidValidatorAddress = errors.New("Invalid validator address")
|
|
ErrVoteInvalidSignature = errors.New("Invalid signature")
|
|
ErrVoteInvalidBlockHash = errors.New("Invalid block hash")
|
|
ErrVoteNonDeterministicSignature = errors.New("Non-deterministic signature")
|
|
ErrVoteNil = errors.New("Nil vote")
|
|
)
|
|
|
|
type ErrVoteConflictingVotes struct {
|
|
*DuplicateVoteEvidence
|
|
}
|
|
|
|
func (err *ErrVoteConflictingVotes) Error() string {
|
|
return fmt.Sprintf("Conflicting votes from validator %v", err.PubKey.Address())
|
|
}
|
|
|
|
func NewConflictingVoteError(val *Validator, voteA, voteB *Vote) *ErrVoteConflictingVotes {
|
|
return &ErrVoteConflictingVotes{
|
|
&DuplicateVoteEvidence{
|
|
PubKey: val.PubKey,
|
|
VoteA: voteA,
|
|
VoteB: voteB,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Types of votes
|
|
// TODO Make a new type "VoteType"
|
|
const (
|
|
VoteTypePrevote = byte(0x01)
|
|
VoteTypePrecommit = byte(0x02)
|
|
)
|
|
|
|
func IsVoteTypeValid(type_ byte) bool {
|
|
switch type_ {
|
|
case VoteTypePrevote:
|
|
return true
|
|
case VoteTypePrecommit:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Address is hex bytes. TODO: crypto.Address
|
|
type Address = cmn.HexBytes
|
|
|
|
// Represents a prevote, precommit, or commit vote from validators for consensus.
|
|
type Vote struct {
|
|
ValidatorAddress Address `json:"validator_address"`
|
|
ValidatorIndex int `json:"validator_index"`
|
|
Height int64 `json:"height"`
|
|
Round int `json:"round"`
|
|
Timestamp time.Time `json:"timestamp"`
|
|
Type byte `json:"type"`
|
|
BlockID BlockID `json:"block_id"` // zero if vote is nil.
|
|
Signature []byte `json:"signature"`
|
|
}
|
|
|
|
func (vote *Vote) SignBytes(chainID string) []byte {
|
|
bz, err := cdc.MarshalJSON(CanonicalVote(chainID, vote))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return bz
|
|
}
|
|
|
|
func (vote *Vote) Copy() *Vote {
|
|
voteCopy := *vote
|
|
return &voteCopy
|
|
}
|
|
|
|
func (vote *Vote) String() string {
|
|
if vote == nil {
|
|
return "nil-Vote"
|
|
}
|
|
var typeString string
|
|
switch vote.Type {
|
|
case VoteTypePrevote:
|
|
typeString = "Prevote"
|
|
case VoteTypePrecommit:
|
|
typeString = "Precommit"
|
|
default:
|
|
cmn.PanicSanity("Unknown vote type")
|
|
}
|
|
|
|
return fmt.Sprintf("Vote{%v:%X %v/%02d/%v(%v) %X %X @ %s}",
|
|
vote.ValidatorIndex, cmn.Fingerprint(vote.ValidatorAddress),
|
|
vote.Height, vote.Round, vote.Type, typeString,
|
|
cmn.Fingerprint(vote.BlockID.Hash),
|
|
cmn.Fingerprint(vote.Signature),
|
|
CanonicalTime(vote.Timestamp))
|
|
}
|
|
|
|
func (vote *Vote) Verify(chainID string, pubKey crypto.PubKey) error {
|
|
if !bytes.Equal(pubKey.Address(), vote.ValidatorAddress) {
|
|
return ErrVoteInvalidValidatorAddress
|
|
}
|
|
|
|
if !pubKey.VerifyBytes(vote.SignBytes(chainID), vote.Signature) {
|
|
return ErrVoteInvalidSignature
|
|
}
|
|
return nil
|
|
}
|