frostfs-api-go/bootstrap/sign.go

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package bootstrap
import "io"
// SignedData returns payload bytes of the request.
func (m Request) SignedData() ([]byte, error) {
data := make([]byte, m.SignedDataSize())
if _, err := m.ReadSignedData(data); err != nil {
return nil, err
}
return data, nil
}
// SignedDataSize returns payload size of the request.
func (m Request) SignedDataSize() (sz int) {
sz += m.GetType().Size()
sz += m.GetState().Size()
info := m.GetInfo()
sz += info.Size()
return
}
// ReadSignedData copies payload bytes to passed buffer.
//
// If the Request size is insufficient, io.ErrUnexpectedEOF returns.
func (m Request) ReadSignedData(p []byte) (int, error) {
if len(p) < m.SignedDataSize() {
return 0, io.ErrUnexpectedEOF
}
var off int
off += copy(p[off:], m.GetType().Bytes())
off += copy(p[off:], m.GetState().Bytes())
info := m.GetInfo()
// FIXME: implement and use stable functions
n, err := info.MarshalTo(p[off:])
off += n
return off, err
}