private string generateKeyParama(string email)
{
DateTime now = DateTime.UtcNow;
string key = email + now.ToShortDateString() + SECRET;
return(SHA.ComputeSHA256Hash(key));
}
} // TODO rename to TransactionId
public TransactionOutput(Key reciepient, decimal value, string parentTransactionId)
{
Reciepient = reciepient;
Value = value;
ParentTransactionId = parentTransactionId;
Id = SHA.ComputeSHA256Hash(reciepient.ToString() + Value + parentTransactionId);
}
private String CalulateHash() // TODO replace to GetHashCode()
{
return(SHA.ComputeSHA256Hash
(
SenderPublicKey.ToString() + ReciepientPublicKey.ToString() + Value
));
}
public static string CalculateHash(ICollection <Transaction> transactions)
{
int count = transactions.Count;
List <string> previousTreeLayer = new List <string>();
foreach (Transaction transaction in transactions)
{
previousTreeLayer.Add(transaction.TransactionId);
}
List <string> treeLayer = previousTreeLayer;
while (count > 1)
{
treeLayer = new List <string>();
for (int i = 1; i < previousTreeLayer.Count; i++)
{
treeLayer.Add(SHA.ComputeSHA256Hash
(
previousTreeLayer[i - 1] + previousTreeLayer[i]
));
}
count = treeLayer.Count;
previousTreeLayer = treeLayer;
}
string merkleRoot = treeLayer.Count == 1 ? treeLayer[0] : "";
return(merkleRoot);
}
public async Task UpdatePasswordAsync(UserRequestModels.UpdatePassword rq)
{
//check token
await _keyResetPasswordService.VerifyKeyAsync(rq.Username, rq.KeyParam);
//get update password user
User user = await _userRepo.GetUserByUsernameAsync(rq.Username);
user.PasswordHash = SHA.ComputeSHA256Hash(rq.Password);
_userRepo.Update(user);
await _userRepo.UnitOfWork.SaveChangesAsync();
}
public async Task <UserReturnModels.User> GetValidUserAsync(string username, string password)
{
var user = await _userRepo.GetUserByUsernameAsync(username);
if (user == null)
{
return(null);
}
// TODO: need to encrypt password and compare with PasswordHash
if (user.PasswordHash == SHA.ComputeSHA256Hash(password))
{
return(_mapper.Map <UserReturnModels.User>(user));
}
return(null);
}
public int AddUser(Adduser user)
{
if (user.Username == "")
{
return(-2);
}
if (user.Username == _adminUsername)
{
return(-3);
}
using (var connection = new SqlConnection(_connectionString))
{
try
{
user.Password = SHA.ComputeSHA256Hash(user.Password);
var parameter = new { username = user.Username, password = user.Password, firstname = user.FirstName, lastname = user.LastName };
var sql = "INSERT INTO Users (username, password, firstname, lastname) VALUES (@username, @password, @firstname, @lastname)";
connection.Execute(sql, parameter);
// If this fails then the user will still be added with no permissions
var GetUserId = "SELECT Id FROM Users WHERE Username = @username";
var UserId = connection.QuerySingle <int>(GetUserId, parameter);
for (int i = 0; i < user.PermissionsArray.Length; i++)
{
var parameterPermId = new { PermissionId = user.PermissionsArray[i] };
var GetPermissionId = "SELECT Id FROM Permissions WHERE PermissionId = @PermissionId";
var PermId = connection.QuerySingle <int>(GetPermissionId, parameterPermId);
var parameter2 = new { UserId, PermissionId = PermId };
var sql2 = "INSERT INTO UsersPermissions (UserId, PermissionId) VALUES (@UserId, @PermissionId)";
connection.Execute(sql2, parameter2);
}
return(1);
}
catch
{
return(-1);
}
}
}
private void CheckPersone(object obj)
{
//Window win = obj as Window;
var passwordBox = obj as PasswordBox;
User.Pass = SHA.ComputeSHA256Hash(passwordBox.Password);
passwordBox.Clear();
//check for exist eny user data in Users
switch (FirstUserCheck())
{
case CheckUser.Yes:
//here we have user i identification and authorezation
User = Identification(User);
if (User != null)
{
//here we call main window fo work with application
CallFirstWindow(User.UserId);
showWindow.CloseWindow(win);
}
else
{
dialogService.ShowMessage("Не верная пара логин-пароль");
}
User = new User();
break;
case CheckUser.No:
dialogService.ShowMessage("В БД нет ни одного пользователя. Нужно зарегистрироваться.");
//here we call user registration window
//this is relevat only at the first application start
//UserRegistration usver;
//usver = new UserRegistration();
//showWindow.ShowWindow(usver);
break;
case CheckUser.DB_trabl:
dialogService.ShowMessage("Проблемы установки связи с базой данных...");
break;
}
}
public bool IsValidUser(UserModel user)
{
try
{
using (var connection = new SqlConnection(_connectionString))
{
var parameter = new { Username = user.Username };
var sql = "SELECT Users.Password FROM Users WHERE Username = @Username";
var comparePass = connection.QuerySingle <String>(sql, parameter);
if (comparePass == SHA.ComputeSHA256Hash(user.Password))
{
return(true);
}
else
{
return(false);
}
}
}
catch
{
return(false);
}
}
public string CalculateHash()
{
return(SHA.ComputeSHA256Hash(PreviousHash + TransactionsHash + createdOn + nonce.ToString()));
}
public int EditUser(EditUser user)
{
if (user.Username == "")
{
return(-2);
}
if (user.Username == _adminUsername || user.NewUsername == _adminUsername)
{
return(-3);
}
using (var connection = new SqlConnection(_connectionString))
{
// Delete all user perms first
var parameter = new { UserId = user.Id };
var sql = "DELETE FROM UsersPermissions WHERE UserId = @UserId";
connection.Execute(sql, parameter);
for (int i = 0; i < user.PermissionsArray.Length; i++)
{
var parameterPermId = new { PermissionId = user.PermissionsArray[i] };
var GetPermissionId = "SELECT Id FROM Permissions WHERE PermissionId = @PermissionId";
var PermId = connection.QuerySingle <int>(GetPermissionId, parameterPermId);
var parameter2 = new { UserId = user.Id, PermissionId = PermId };
var sql2 = "INSERT INTO UsersPermissions (UserId, PermissionId) VALUES (@UserId, @PermissionId)";
connection.Execute(sql2, parameter2);
}
if (user.Password != null) //Change password
{
user.Password = SHA.ComputeSHA256Hash(user.Password);
var parameter3 = new { username = user.Username, password = user.Password };
var sql3 = "UPDATE Users SET Password = @password WHERE Username = @username";
connection.Execute(sql3, parameter3);
}
try
{
var updateNamesParam = new { username = user.Username, firstname = user.FirstName, lastname = user.LastName };
if (user.FirstName != null)
{
var updateFirstname = "UPDATE Users SET FirstName = @firstname WHERE Username = @Username";
connection.Execute(updateFirstname, updateNamesParam);
}
if (user.LastName != null)
{
var updateLastname = "UPDATE Users SET LastName = @lastname WHERE Username = @Username";
connection.Execute(updateLastname, updateNamesParam);
}
if (user.NewUsername != null) //Change username
{
var updateUsernameParam = new { username = user.Username, NewUsername = user.NewUsername };
var updateUsername = "******";
connection.Execute(updateUsername, updateUsernameParam);
}
return(1);
}
catch
{
return(-1);
}
}
}
private static string HashPassword(string input)
{ // Create a function to easily hash passwords
return(SHA.ComputeSHA256Hash(input)); // One function to hash using SHA256 with EasyEncryption library, returns a string.
}
public Router()
{
Get["/"] = parameters => View["index"];
Get["/{longId}"] = parameters =>
{
using (var db = new LiteDatabase(Config.DBPATH))
{
var collection = db.GetCollection <Paste>("pastes");
var paste = collection.FindOne(Query.EQ("LongId", parameters.longId.ToString()));
if (paste == null)
{
return(HttpStatusCode.NotFound);
}
return(View["paste", paste]);
}
};
Get["/json/{longId}"] = parameters =>
{
using (var db = new LiteDatabase(Config.DBPATH))
{
var collection = db.GetCollection <Paste>("pastes");
var paste = collection.FindOne(Query.EQ("LongId", parameters.longId.ToString()));
if (paste == null)
{
return(HttpStatusCode.NotFound);
}
return(JsonConvert.SerializeObject(paste));
}
};
Get["/raw/{longId}"] = parameters =>
{
string longId = parameters.longId;
using (var db = new LiteDatabase(Config.DBPATH))
{
var result = db.GetCollection <Paste>("pastes").FindOne(Query.EQ("LongId", longId));
return(result.Body);
}
};
Post["/upload"] = parameters =>
{
var body = Request.Body;
var length = (int)body.Length;
var data = new byte[length];
body.Read(data, 0, length);
var jsonPaste = JsonConvert.DeserializeObject <Paste>(Encoding.Default.GetString(data));
if (HexUtils.isHex(jsonPaste.Title) && HexUtils.isHex(jsonPaste.Body))
{
using (var db = new LiteDatabase(Config.DBPATH))
{
var pastes = db.GetCollection <Paste>("pastes");
string hashSeed = pastes.Count().ToString() + jsonPaste.Date.ToString() + jsonPaste.Title + jsonPaste.Body + jsonPaste.Language;
string longId = Multibase.Base64.Encode(HexUtils.toByteArray(SHA.ComputeSHA256Hash(hashSeed)), false, true);
var newPaste = new Paste
{
LongId = longId,
Date = DateTime.Now,
Title = jsonPaste.Title,
Body = jsonPaste.Body,
Language = jsonPaste.Language
};
pastes.Insert(newPaste);
var res = new UploadResponse
{
Status = "success",
LongId = longId
};
return(JsonConvert.SerializeObject(res));
}
}
else
{
var res = new UploadResponse
{
Status = "error",
ErrMsg = "Error: the paste is not encrypted with AES-256."
};
return(JsonConvert.SerializeObject(res));
}
};
}
