func loadExample(c *cli.Context, file string) (sops.Tree, error) {
var in []byte
var tree sops.Tree
fileStore := inputStore(c, file)
if _, ok := fileStore.(*json.BinaryStore); ok {
// Get the value under the first key
in = []byte(exampleTree[0].Value.(string))
} else {
var err error
in, err = fileStore.Marshal(exampleTree)
if err != nil {
return tree, err
}
}
branch, _ := fileStore.Unmarshal(in)
tree.Branch = branch
ks, err := getKeySources(c, file)
if err != nil {
return tree, err
}
tree.Metadata.UnencryptedSuffix = c.String("unencrypted-suffix")
tree.Metadata.Version = version
tree.Metadata.KeySources = ks
key, errs := tree.GenerateDataKey()
if len(errs) > 0 {
return tree, cli.NewExitError(fmt.Sprintf("Error encrypting the data key with one or more master keys: %s", errs), exitCouldNotRetrieveKey)
}
tree.Metadata.UpdateMasterKeys(key)
return tree, nil
}
func decryptConf(encryptedConf []byte) (decryptedConf []byte, err error) {
store := &sopsyaml.Store{}
metadata, err := store.UnmarshalMetadata(encryptedConf)
if err != nil {
return
}
key, err := metadata.GetDataKey()
if err != nil {
return
}
branch, err := store.Unmarshal(encryptedConf)
if err != nil {
return
}
tree := sops.Tree{Branch: branch, Metadata: metadata}
cipher := aes.Cipher{}
mac, err := tree.Decrypt(key, cipher)
if err != nil {
return
}
originalMac, err := cipher.Decrypt(
metadata.MessageAuthenticationCode,
key,
[]byte(metadata.LastModified.Format(time.RFC3339)),
)
if originalMac != mac {
return
}
return store.Marshal(tree.Branch)
}
func rotate(c *cli.Context, tree sops.Tree, outputStore sops.Store) ([]byte, error) {
tree, _, err := decryptTree(tree, c.Bool("ignore-mac"))
if err != nil {
return nil, err
}
kmsEncryptionContext := kms.ParseKMSContext(c.String("encryption-context"))
if c.String("encryption-context") != "" && kmsEncryptionContext == nil {
return nil, cli.NewExitError("Invalid KMS encryption context format", exitErrorInvalidKMSEncryptionContextFormat)
}
tree.Metadata.AddKMSMasterKeys(c.String("add-kms"), kmsEncryptionContext)
tree.Metadata.AddPGPMasterKeys(c.String("add-pgp"))
tree.Metadata.RemoveKMSMasterKeys(c.String("rm-kms"))
tree.Metadata.RemovePGPMasterKeys(c.String("rm-pgp"))
_, errs := tree.GenerateDataKey()
if len(errs) > 0 {
return nil, cli.NewExitError(fmt.Sprintf("Error encrypting the data key with one or more master keys: %s", errs), exitCouldNotRetrieveKey)
}
tree, err = encryptTree(tree, nil)
if err != nil {
return nil, err
}
out, err := outputStore.MarshalWithMetadata(tree.Branch, tree.Metadata)
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not marshal tree: %s", err), exitErrorDumpingTree)
}
return out, nil
}
func decryptFile(store sops.Store, fileBytes []byte, ignoreMac bool) (sops.Tree, error) {
var tree sops.Tree
metadata, err := store.UnmarshalMetadata(fileBytes)
if err != nil {
return tree, cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
}
key, err := metadata.GetDataKey()
if err != nil {
return tree, cli.NewExitError(err.Error(), exitCouldNotRetrieveKey)
}
branch, err := store.Unmarshal(fileBytes)
if err != nil {
return tree, cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
}
tree = sops.Tree{Branch: branch, Metadata: metadata}
cipher := aes.Cipher{}
mac, err := tree.Decrypt(key, cipher)
if err != nil {
return tree, cli.NewExitError(fmt.Sprintf("Error decrypting tree: %s", err), exitErrorDecryptingTree)
}
originalMac, err := cipher.Decrypt(metadata.MessageAuthenticationCode, key, []byte(metadata.LastModified.Format(time.RFC3339)))
if originalMac != mac && !ignoreMac {
return tree, cli.NewExitError(fmt.Sprintf("MAC mismatch. File has %s, computed %s", originalMac, mac), 9)
}
return tree, nil
}
func encryptTree(tree sops.Tree, stash map[string][]interface{}) (sops.Tree, error) {
cipher := aes.Cipher{}
key, err := tree.Metadata.GetDataKey()
if err != nil {
return tree, cli.NewExitError(err.Error(), exitCouldNotRetrieveKey)
}
computedMac, err := tree.Encrypt(key, cipher, stash)
if err != nil {
return tree, cli.NewExitError(fmt.Sprintf("Error encrypting tree: %s", err), exitErrorEncryptingTree)
}
encryptedMac, err := cipher.Encrypt(computedMac, key, tree.Metadata.LastModified.Format(time.RFC3339), nil)
if err != nil {
return tree, cli.NewExitError(fmt.Sprintf("Could not encrypt MAC: %s", err), exitErrorEncryptingMac)
}
tree.Metadata.MessageAuthenticationCode = encryptedMac
return tree, nil
}
func decryptTree(tree sops.Tree, ignoreMac bool) (sops.Tree, map[string][]interface{}, error) {
cipher := aes.Cipher{}
stash := make(map[string][]interface{})
key, err := tree.Metadata.GetDataKey()
if err != nil {
return tree, nil, cli.NewExitError(err.Error(), exitCouldNotRetrieveKey)
}
computedMac, err := tree.Decrypt(key, cipher, stash)
if err != nil {
return tree, nil, cli.NewExitError(fmt.Sprintf("Error decrypting tree: %s", err), exitErrorDecryptingTree)
}
fileMac, _, err := cipher.Decrypt(tree.Metadata.MessageAuthenticationCode, key, tree.Metadata.LastModified.Format(time.RFC3339))
if fileMac != computedMac && !ignoreMac {
return tree, nil, cli.NewExitError(fmt.Sprintf("MAC mismatch. File has %s, computed %s", fileMac, computedMac), exitMacMismatch)
}
return tree, stash, nil
}
func decrypt(c *cli.Context, tree sops.Tree, outputStore sops.Store) ([]byte, error) {
tree, _, err := decryptTree(tree, c.Bool("ignore-mac"))
if c.String("extract") != "" {
v, err := tree.Branch.Truncate(c.String("extract"))
if err != nil {
return nil, cli.NewExitError(err.Error(), exitInvalidTreePathFormat)
}
if newBranch, ok := v.(sops.TreeBranch); ok {
tree.Branch = newBranch
} else {
bytes, err := sops.ToBytes(v)
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Error dumping tree: %s", err), exitErrorDumpingTree)
}
return bytes, nil
}
}
out, err := outputStore.Marshal(tree.Branch)
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Error dumping file: %s", err), exitErrorDumpingTree)
}
return out, nil
}
func edit(c *cli.Context, file string, fileBytes []byte) ([]byte, error) {
var tree sops.Tree
var stash map[string][]interface{}
var err error
if fileBytes == nil {
tree, err = loadExample(c, file)
} else {
tree, err = loadEncryptedFile(c, inputStore(c, file), fileBytes)
if err != nil {
return nil, err
}
tree, stash, err = decryptTree(tree, c.Bool("ignore-mac"))
if err != nil {
return nil, err
}
}
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not load file: %s", err), exitCouldNotReadInputFile)
}
tmpdir, err := ioutil.TempDir("", "")
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not create temporary directory: %s", err), exitCouldNotWriteOutputFile)
}
defer os.RemoveAll(tmpdir)
tmpfile, err := os.Create(path.Join(tmpdir, path.Base(file)))
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not create temporary file: %s", err), exitCouldNotWriteOutputFile)
}
var out []byte
if c.Bool("show-master-keys") {
out, err = outputStore(c, file).MarshalWithMetadata(tree.Branch, tree.Metadata)
} else {
out, err = outputStore(c, file).Marshal(tree.Branch)
}
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not marshal tree: %s", err), exitErrorDumpingTree)
}
_, err = tmpfile.Write(out)
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not write output file: %s", err), exitCouldNotWriteOutputFile)
}
origHash, err := hashFile(tmpfile.Name())
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not hash file: %s", err), exitCouldNotReadInputFile)
}
for {
err = runEditor(tmpfile.Name())
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not run editor: %s", err), exitNoEditorFound)
}
newHash, err := hashFile(tmpfile.Name())
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not hash file: %s", err), exitCouldNotReadInputFile)
}
if bytes.Equal(newHash, origHash) {
return nil, cli.NewExitError("File has not changed, exiting.", exitFileHasNotBeenModified)
}
edited, err := ioutil.ReadFile(tmpfile.Name())
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not read edited file: %s", err), exitCouldNotReadInputFile)
}
newBranch, err := inputStore(c, file).Unmarshal(edited)
if err != nil {
fmt.Printf("Could not load tree: %s\nProbably invalid syntax. Press a key to return to the editor, or Ctrl+C to exit.", err)
bufio.NewReader(os.Stdin).ReadByte()
continue
}
if c.Bool("show-master-keys") {
metadata, err := inputStore(c, file).UnmarshalMetadata(edited)
if err != nil {
fmt.Printf("sops branch is invalid: %s.\nPress a key to return to the editor, or Ctrl+C to exit.", err)
bufio.NewReader(os.Stdin).ReadByte()
continue
}
tree.Metadata = metadata
}
tree.Branch = newBranch
tree.Metadata.Version = version
if tree.Metadata.MasterKeyCount() == 0 {
fmt.Println("No master keys were provided, so sops can't encrypt the file.\nPress a key to return to the editor, or Ctrl+C to exit.")
bufio.NewReader(os.Stdin).ReadByte()
continue
}
break
}
tree, err = encryptTree(tree, stash)
if err != nil {
return nil, err
}
out, err = outputStore(c, file).MarshalWithMetadata(tree.Branch, tree.Metadata)
if err != nil {
return nil, cli.NewExitError(fmt.Sprintf("Could not marshal tree: %s", err), exitErrorDumpingTree)
}
return out, 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
}