move kms implementation outside the sdk package

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

kms/basesecret.go

@@ -0,0 +1,71 @@
+package kms
+
+import (
+	sdkkms "github.com/drakkan/sftpgo/v2/sdk/kms"
+)
+
+// BaseSecret defines the base struct shared among all the secret providers
+type BaseSecret struct {
+	Status         sdkkms.SecretStatus `json:"status,omitempty"`
+	Payload        string              `json:"payload,omitempty"`
+	Key            string              `json:"key,omitempty"`
+	AdditionalData string              `json:"additional_data,omitempty"`
+	// 1 means encrypted using a master key
+	Mode int `json:"mode,omitempty"`
+}
+
+// GetStatus returns the secret's status
+func (s *BaseSecret) GetStatus() sdkkms.SecretStatus {
+	return s.Status
+}
+
+// GetPayload returns the secret's payload
+func (s *BaseSecret) GetPayload() string {
+	return s.Payload
+}
+
+// GetKey returns the secret's key
+func (s *BaseSecret) GetKey() string {
+	return s.Key
+}
+
+// GetMode returns the encryption mode
+func (s *BaseSecret) GetMode() int {
+	return s.Mode
+}
+
+// GetAdditionalData returns the secret's additional data
+func (s *BaseSecret) GetAdditionalData() string {
+	return s.AdditionalData
+}
+
+// SetKey sets the secret's key
+func (s *BaseSecret) SetKey(value string) {
+	s.Key = value
+}
+
+// SetAdditionalData sets the secret's additional data
+func (s *BaseSecret) SetAdditionalData(value string) {
+	s.AdditionalData = value
+}
+
+// SetStatus sets the secret's status
+func (s *BaseSecret) SetStatus(value sdkkms.SecretStatus) {
+	s.Status = value
+}
+
+func (s *BaseSecret) isEmpty() bool {
+	if s.Status != "" {
+		return false
+	}
+	if s.Payload != "" {
+		return false
+	}
+	if s.Key != "" {
+		return false
+	}
+	if s.AdditionalData != "" {
+		return false
+	}
+	return true
+}