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canonical.go
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canonical.go
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package types
import (
"time"
cmn "github.com/tendermint/tendermint/libs/common"
tmtime "github.com/tendermint/tendermint/types/time"
)
// Canonical* wraps the structs in types for amino encoding them for use in SignBytes / the Signable interface.
// TimeFormat is used for generating the sigs
const TimeFormat = time.RFC3339Nano
type CanonicalBlockID struct {
Hash cmn.HexBytes
PartsHeader CanonicalPartSetHeader
}
type CanonicalPartSetHeader struct {
Hash cmn.HexBytes
Total int
}
type CanonicalProposal struct {
Type SignedMsgType // type alias for byte
Height int64 `binary:"fixed64"`
Round int64 `binary:"fixed64"`
POLRound int64 `binary:"fixed64"`
BlockID CanonicalBlockID
Timestamp time.Time
ChainID string
}
type CanonicalVote struct {
Type SignedMsgType // type alias for byte
Height int64 `binary:"fixed64"`
Round int64 `binary:"fixed64"`
BlockID CanonicalBlockID
Timestamp time.Time
ChainID string
}
//-----------------------------------
// Canonicalize the structs
func CanonicalizeBlockID(blockID BlockID) CanonicalBlockID {
return CanonicalBlockID{
Hash: blockID.Hash,
PartsHeader: CanonicalizePartSetHeader(blockID.PartsHeader),
}
}
func CanonicalizePartSetHeader(psh PartSetHeader) CanonicalPartSetHeader {
return CanonicalPartSetHeader{
psh.Hash,
psh.Total,
}
}
func CanonicalizeProposal(chainID string, proposal *Proposal) CanonicalProposal {
return CanonicalProposal{
Type: ProposalType,
Height: proposal.Height,
Round: int64(proposal.Round), // cast int->int64 to make amino encode it fixed64 (does not work for int)
POLRound: int64(proposal.POLRound),
BlockID: CanonicalizeBlockID(proposal.BlockID),
Timestamp: proposal.Timestamp,
ChainID: chainID,
}
}
func CanonicalizeVote(chainID string, vote *Vote) CanonicalVote {
return CanonicalVote{
Type: vote.Type,
Height: vote.Height,
Round: int64(vote.Round), // cast int->int64 to make amino encode it fixed64 (does not work for int)
BlockID: CanonicalizeBlockID(vote.BlockID),
Timestamp: vote.Timestamp,
ChainID: chainID,
}
}
// CanonicalTime can be used to stringify time in a canonical way.
func CanonicalTime(t time.Time) string {
// Note that sending time over amino resets it to
// local time, we need to force UTC here, so the
// signatures match
return tmtime.Canonical(t).Format(TimeFormat)
}