87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
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package types
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import (
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"fmt"
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block "github.com/ipfs/go-block-format"
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"github.com/ipfs/go-cid"
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cbor "github.com/ipfs/go-ipld-cbor"
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"github.com/multiformats/go-multihash"
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"github.com/polydawn/refmt/obj/atlas"
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)
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func init() {
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cbor.RegisterCborType(atlas.BuildEntry(SignedMessage{}).UseTag(45).Transform().
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TransformMarshal(atlas.MakeMarshalTransformFunc(
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func(sm SignedMessage) ([]interface{}, error) {
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return []interface{}{
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sm.Message,
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sm.Signature,
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}, nil
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})).
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TransformUnmarshal(atlas.MakeUnmarshalTransformFunc(
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func(x []interface{}) (SignedMessage, error) {
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sigb, ok := x[1].([]byte)
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if !ok {
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return SignedMessage{}, fmt.Errorf("signature in signed message was not bytes")
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}
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sig, err := SignatureFromBytes(sigb)
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if err != nil {
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return SignedMessage{}, err
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}
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return SignedMessage{
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Message: x[0].(Message),
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Signature: sig,
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}, nil
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})).
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Complete())
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}
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func (m *SignedMessage) ToStorageBlock() (block.Block, error) {
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data, err := m.Serialize()
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if err != nil {
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return nil, err
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}
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pref := cid.NewPrefixV1(0x1f, multihash.BLAKE2B_MIN+31)
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c, err := pref.Sum(data)
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if err != nil {
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return nil, err
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}
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return block.NewBlockWithCid(data, c)
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}
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func (m *SignedMessage) Cid() cid.Cid {
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sb, err := m.ToStorageBlock()
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if err != nil {
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panic(err)
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}
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return sb.Cid()
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}
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type SignedMessage struct {
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Message Message
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Signature Signature
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}
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func DecodeSignedMessage(data []byte) (*SignedMessage, error) {
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var msg SignedMessage
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if err := cbor.DecodeInto(data, &msg); err != nil {
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return nil, err
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}
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return &msg, nil
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}
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func (sm *SignedMessage) Serialize() ([]byte, error) {
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data, err := cbor.DumpObject(sm)
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if err != nil {
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return nil, err
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}
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return data, nil
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}
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