Various API changes and simplifications to fix mobile builds

src/config/config.go

@@ -16,21 +16,27 @@ type NodeState struct {
 	Mutex    sync.RWMutex
 }
 
-// Get returns both the current and previous node configs
-func (s *NodeState) Get() (NodeConfig, NodeConfig) {
+// Current returns the current node config
+func (s *NodeState) GetCurrent() NodeConfig {
 	s.Mutex.RLock()
 	defer s.Mutex.RUnlock()
-	return s.Current, s.Previous
+	return s.Current
+}
+
+// Previous returns the previous node config
+func (s *NodeState) GetPrevious() NodeConfig {
+	s.Mutex.RLock()
+	defer s.Mutex.RUnlock()
+	return s.Previous
 }
 
 // Replace the node configuration with new configuration. This method returns
 // both the new and the previous node configs
-func (s *NodeState) Replace(n NodeConfig) (NodeConfig, NodeConfig) {
+func (s *NodeState) Replace(n NodeConfig) {
 	s.Mutex.Lock()
 	defer s.Mutex.Unlock()
 	s.Previous = s.Current
 	s.Current = n
-	return s.Current, s.Previous
 }
 
 // NodeConfig defines all configuration values needed to run a signle yggdrasil node
@@ -115,3 +121,19 @@ func GenerateConfig() *NodeConfig {
 
 	return &cfg
 }
+
+// NewEncryptionKeys generates a new encryption keypair. The encryption keys are
+// used to encrypt traffic and to derive the IPv6 address/subnet of the node.
+func (cfg *NodeConfig) NewEncryptionKeys() {
+	bpub, bpriv := crypto.NewBoxKeys()
+	cfg.EncryptionPublicKey = hex.EncodeToString(bpub[:])
+	cfg.EncryptionPrivateKey = hex.EncodeToString(bpriv[:])
+}
+
+// NewSigningKeys generates a new signing keypair. The signing keys are used to
+// derive the structure of the spanning tree.
+func (cfg *NodeConfig) NewSigningKeys() {
+	spub, spriv := crypto.NewSigKeys()
+	cfg.SigningPublicKey = hex.EncodeToString(spub[:])
+	cfg.SigningPrivateKey = hex.EncodeToString(spriv[:])
+}