// UnmarshalMetadata takes a yaml document as a string and extracts sops' metadata from it
func (store *Store) UnmarshalMetadata(in []byte) (sops.Metadata, error) {
var metadata sops.Metadata
var ok bool
data := make(map[interface{}]interface{})
err := yaml.Unmarshal(in, &data)
if err != nil {
return metadata, fmt.Errorf("Error unmarshalling input yaml: %s", err)
}
if data, ok = data["sops"].(map[interface{}]interface{}); !ok {
return metadata, sops.MetadataNotFound
}
metadata.MessageAuthenticationCode = data["mac"].(string)
lastModified, err := time.Parse(time.RFC3339, data["lastmodified"].(string))
if err != nil {
return metadata, fmt.Errorf("Could not parse last modified date: %s", err)
}
metadata.LastModified = lastModified
unencryptedSuffix, ok := data["unencrypted_suffix"].(string)
if !ok {
unencryptedSuffix = sops.DefaultUnencryptedSuffix
}
metadata.UnencryptedSuffix = unencryptedSuffix
if metadata.Version, ok = data["version"].(string); !ok {
metadata.Version = strconv.FormatFloat(data["version"].(float64), 'f', -1, 64)
}
if k, ok := data["kms"].([]interface{}); ok {
ks, err := store.kmsEntries(k)
if err == nil {
metadata.KeySources = append(metadata.KeySources, ks)
}
}
if pgp, ok := data["pgp"].([]interface{}); ok {
ks, err := store.pgpEntries(pgp)
if err == nil {
metadata.KeySources = append(metadata.KeySources, ks)
}
}
return metadata, nil
}