// 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
}
func encrypt(c *cli.Context, file string, fileBytes []byte, output io.Writer) error {
store := store(file)
branch, err := store.Unmarshal(fileBytes)
if err != nil {
return cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
}
var metadata sops.Metadata
metadata.UnencryptedSuffix = c.String("unencrypted-suffix")
metadata.Version = "2.0.0"
var kmsKeys []sops.MasterKey
var pgpKeys []sops.MasterKey
if c.String("kms") != "" {
for _, k := range kms.MasterKeysFromArnString(c.String("kms")) {
kmsKeys = append(kmsKeys, &k)
}
}
if c.String("pgp") != "" {
for _, k := range pgp.MasterKeysFromFingerprintString(c.String("pgp")) {
pgpKeys = append(pgpKeys, &k)
}
}
if c.String("kms") == "" && c.String("pgp") == "" {
var confBytes []byte
if c.String("config") != "" {
confBytes, err = ioutil.ReadFile(c.String("config"))
if err != nil {
return cli.NewExitError(fmt.Sprintf("Error loading config file: %s", err), exitErrorReadingConfig)
}
}
kmsString, pgpString, err := yaml.MasterKeyStringsForFile(file, confBytes)
if err == nil {
for _, k := range pgp.MasterKeysFromFingerprintString(pgpString) {
pgpKeys = append(pgpKeys, &k)
}
for _, k := range kms.MasterKeysFromArnString(kmsString) {
kmsKeys = append(kmsKeys, &k)
}
}
}
kmsKs := sops.KeySource{Name: "kms", Keys: kmsKeys}
pgpKs := sops.KeySource{Name: "pgp", Keys: pgpKeys}
metadata.KeySources = append(metadata.KeySources, kmsKs)
metadata.KeySources = append(metadata.KeySources, pgpKs)
tree := sops.Tree{Branch: branch, Metadata: metadata}
key, err := tree.GenerateDataKey()
if err != nil {
return cli.NewExitError(err.Error(), exitCouldNotRetrieveKey)
}
cipher := aes.Cipher{}
mac, err := tree.Encrypt(key, cipher)
encryptedMac, err := cipher.Encrypt(mac, key, []byte(metadata.LastModified.Format(time.RFC3339)))
if err != nil {
return cli.NewExitError(fmt.Sprintf("Could not encrypt MAC: %s", err), exitErrorEncryptingTree)
}
metadata.MessageAuthenticationCode = encryptedMac
out, err := store.MarshalWithMetadata(tree.Branch, metadata)
_, err = output.Write([]byte(out))
if err != nil {
return cli.NewExitError(fmt.Sprintf("Could not write to output stream: %s", err), exitCouldNotWriteOutputFile)
}
return nil
}