Cleanup of agent

SecretAgentKit/Agent.swift

@@ -6,20 +6,20 @@ import SecretKit
 public class Agent {
 
     fileprivate let storeList: SecretStoreList
-//    fileprivate let notifier: Notifier
+    fileprivate let witness: SigningWitness?
     fileprivate let writer = OpenSSHKeyWriter()
 
-    public init(storeList: SecretStoreList/*, notifier: Notifier*/) {
+    public init(storeList: SecretStoreList, witness: SigningWitness? = nil) {
         os_log(.debug, "Agent is running")
         self.storeList = storeList
-//        self.notifier = notifier
+        self.witness = witness
     }
     
 }
 
 extension Agent {
 
-    public tfunc handle(fileHandle: FileHandle) {
+    public func handle(fileHandle: FileHandle) {
         os_log(.debug, "Agent handling new data")
         let data = fileHandle.availableData
         guard !data.isEmpty else { return }
@@ -78,12 +78,17 @@ extension Agent {
         let reader = OpenSSHReader(data: data)
         let hash = try reader.readNextChunk()
         guard let (store, secret) = secret(matching: hash) else {
+            os_log(.debug, "Agent did not have a key matching %@", hash as NSData)
             throw AgentError.noMatchingKey
         }
+
+        if let witness = witness {
+            try witness.witness(accessTo: secret)
+        }
+
         let dataToSign = try reader.readNextChunk()
         let derSignature = try store.sign(data: dataToSign, with: secret)
-        // TODO: Move this
-//        notifier.notify(accessTo: secret)
+
         let curveData = writer.curveType(for: secret.algorithm, length: secret.keySize).data(using: .utf8)!
 
         // Convert from DER formatted rep to raw (r||s)

SecretAgentKit/SigningWitness.swift

@@ -0,0 +1,8 @@
+import Foundation
+import SecretKit
+
+public protocol SigningWitness {
+
+    func witness(accessTo secret: AnySecret) throws
+
+}