/// <summary>
/// Constructor of Session class for a new User
/// </summary>
/// <param name="username">Username of the user</param>
/// <param name="password">Password of the user</param>
/// <param name="localObjectStorage">LocalObjectStorage</param>
internal Session(string username, string password, LocalObjectStorage localObjectStorage)
{
LocalObjectStorage = localObjectStorage;
rsaKeyPair = Crypto.DeriveRsaKey(Encoding.UTF8.GetBytes(username), Encoding.UTF8.GetBytes(password));
KademliaId id = Crypto.Hash(rsaKeyPair.Public);
Username = username;
User = localObjectStorage.GetObject(id) as User;
if (User == null)
{
User = new User(rsaKeyPair.Public) {ObjectId = id};
localObjectStorage.StoreObject(User, true);
}
onUserUpdated = UpdateUser;
localObjectStorage.OnUserUpdated += onUserUpdated;
}
internal void Test()
{
var objectId = KademliaId.RandomId;
var chunkId = KademliaId.RandomId;
var user = new User();
user.ObjectId = objectId;
var userFile = new UserFile();
userFile.ChunkList.Add(chunkId);
user.Add(userFile);
var ms = new MemoryStream();
Serializer.Serialize(ms, user);
var bytes = ms.ToArray();
// store the object
var ct1 = new CallbackTimeout<Error>();
nodeA.StoreObject(nodeBInfo, objectId, bytes, ct1.Done);
if (!ct1.Block(TestParameters.LocalhostCommunicationTimeout))
{
Assert.Fail("No response within timeout");
}
Assert.AreEqual(Error.Success, ct1.Result);
// now retrieve it
var ct2 = new CallbackTimeout<Error, byte[]>();
nodeC.GetObjectFromNode(new List<NodeInformation>{nodeBInfo}, objectId, ct2.Done);
if (!ct2.Block(TestParameters.LocalhostCommunicationTimeout))
{
Assert.Fail("No response within timeout");
}
Assert.AreEqual(Error.Success, ct2.Result1);
Assert.AreElementsEqual(bytes, ct2.Result2);
}
/// <summary>
/// Merges the user object with the current object if they are different
/// </summary>
/// <param name="user">user object to merge this object with</param>
/// <returns>True if merged, false if they where identical</returns>
internal bool Merge(User user)
{
using (MemoryStream msThis = new MemoryStream(), msOther = new MemoryStream())
{
Serializer.Serialize(msThis, this);
Serializer.Serialize(msOther, user);
if (Crypto.Hash(msThis.ToArray()).SequenceEqual(Crypto.Hash(msOther.ToArray()))) return false;
}
foreach (var file in user.files)
{
if (files.All(f => f.FileId != file.FileId) && deletedFiles.All(f => f.Item2 != file.FileId))
Add(file);
}
foreach (var file in user.deletedFiles)
{
if (deletedFiles.All(f => f.Item2 != file.Item2))
AddDeletedFile(file.Item1, file.Item2);
}
return true;
}
private void UpdateUser(User updatedUser)
{
User.Merge(updatedUser);
if (OnUserMerged != null)
OnUserMerged();
}
private void StoreTestObject()
{
// create the test object
objectId = KademliaId.RandomId;
var chunkId = KademliaId.RandomId;
var user = new User();
user.ObjectId = objectId;
var userFile = new UserFile();
userFile.ChunkList.Add(chunkId);
user.Add(userFile);
var ms = new MemoryStream();
Serializer.Serialize(ms, user);
bytes = ms.ToArray();
// store it
var ct = new CallbackTimeout<Error>();
var ni = new NodeInformation(new IPEndPoint(IPAddress.Loopback, nodes[1].Port), nodes[1].Id);
nodes[0].StoreObject(ni, objectId, bytes, ct.Done);
if (!ct.Block(TestParameters.LocalhostCommunicationTimeout))
{
Assert.Fail("No response within timeout");
}
Assert.AreEqual(Error.Success, ct.Result);
}