Add import-pem-account command

Fixes #187.

©! I hereby licence these changes under the licence with SHA256 hash
©! fd80a26fbb3f644af1fa994134446702932968519797227e07a1368dea80f0bc.

cmd/acmetool/main.go

@@ -76,6 +76,10 @@ var (
 	importJWKURLArg     = importJWKAccountCmd.Arg("provider-url", "Provider URL (e.g. https://acme-v01.api.letsencrypt.org/directory)").Required().String()
 	importJWKPathArg    = importJWKAccountCmd.Arg("private-key-file", "Path to private_key.json").Required().ExistingFile()
 
+	importPEMAccountCmd = kingpin.Command("import-pem-account", "Import a PEM account key")
+	importPEMURLArg     = importPEMAccountCmd.Arg("provider-url", "Provider URL (e.g. https://acme-v01.api.letsencrypt.org/directory)").Required().String()
+	importPEMPathArg    = importPEMAccountCmd.Arg("private-key-file", "Path to private key PEM file").Required().ExistingFile()
+
 	importKeyCmd = kingpin.Command("import-key", "Import a certificate private key")
 	importKeyArg = importKeyCmd.Arg("private-key-file", "Path to PEM-encoded private key").Required().ExistingFile()
 
@@ -162,6 +166,8 @@ func main() {
 		cmdImportKey()
 	case "import-jwk-account":
 		cmdImportJWKAccount()
+	case "import-pem-account":
+		cmdImportPEMAccount()
 	case "import-le":
 		cmdImportLE()
 		cmdReconcile()
@@ -189,6 +195,24 @@ func cmdImportJWKAccount() {
 	log.Fatale(err, "cannot import account key")
 }
 
+func cmdImportPEMAccount() {
+	s, err := storage.NewFDB(*stateFlag)
+	log.Fatale(err, "storage")
+
+	f, err := os.Open(*importPEMPathArg)
+	log.Fatale(err, "cannot open private key file")
+	defer f.Close()
+
+	b, err := ioutil.ReadAll(f)
+	log.Fatale(err, "cannot read file")
+
+	pk, err := acmeutils.LoadPrivateKey(b)
+	log.Fatale(err, "cannot parse private key")
+
+	_, err = s.ImportAccount(*importPEMURLArg, pk)
+	log.Fatale(err, "cannot import account key")
+}
+
 func cmdImportKey() {
 	s, err := storage.NewFDB(*stateFlag)
 	log.Fatale(err, "storage")