public static void GenerateNewAuthToken(LoginStatusTokens tokens)
{
Random rand = new Random();
byte[] loginToken = new byte[64];
rand.NextBytes(loginToken);
tokens.AuthToken = MysqlDataConvertingUtil.ConvertToHexString(loginToken);
DateTime now = DateTime.UtcNow;
now = now.AddHours(.5);
tokens.AuthTokenExpiration = now.ToString();
}
public static LoginStatusTokens ExtractLoginTokens(OverallUser userIn)
{
string loggedTokensJson = userIn.LoginStatusTokens;
loggedTokensJson = loggedTokensJson.Replace("\\\"", "\"");
byte[] tokens = Encoding.UTF8.GetBytes(loggedTokensJson);
MemoryStream stream = new MemoryStream(tokens);
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(LoginStatusTokens));
LoginStatusTokens ret = serializer.ReadObject(stream) as LoginStatusTokens;
return(ret);
}
public static bool AuthTokenValid(OverallUser databaseUser, string authToken)
{
byte[] convertedText = Encoding.UTF8.GetBytes(databaseUser.LoginStatusTokens);
DataContractJsonSerializer loggedTokenSerializer = new DataContractJsonSerializer(typeof(LoginStatusTokens));
LoginStatusTokens dbTokens = loggedTokenSerializer.ReadObject(new MemoryStream(convertedText)) as LoginStatusTokens;
if (dbTokens == null)
{
throw new ArgumentException("database user had an invalid entry for logged tokens");
}
if (!authToken.Equals(dbTokens.AuthToken))
{
return(false);
}
DateTime dbExpiration = DateTime.Parse(dbTokens.AuthTokenExpiration);
return(DateTime.UtcNow.CompareTo(dbExpiration) < 0);
}
/// <summary>
/// Request for a user to log in using their email and password. Documention is found in the Web API Enumeration file
/// in the /RepairJob/Requirements tab, starting at row 21
/// </summary>
/// <param name="ctx">The HttpListenerContext to respond to</param>
public void HandlePutRequest(HttpListenerContext ctx)
{
try
{
#region Input Validation
if (!ctx.Request.HasEntityBody)
{
WriteBodyResponse(ctx, 400, "No Body", "Request lacked a body");
return;
}
string reqString = new StreamReader(ctx.Request.InputStream).ReadToEnd();
UserLoginRequest req = JsonDataObjectUtil <UserLoginRequest> .ParseObject(reqString);
if (req == null)
{
WriteBodyResponse(ctx, 400, "Incorrect Format", "Request was in the wrong format");
return;
}
if (!ValidateLoginRequest(req))
{
UserCheckLoginStatusRequest req2 = JsonDataObjectUtil <UserCheckLoginStatusRequest> .ParseObject(reqString);
if (req2 != null && ValidateCheckLoginRequest(req2))
{
HandleCheckLoginRequest(ctx, req2);
return;
}
WriteBodyResponse(ctx, 400, "Incorrect Format", "Not all fields of the request were filled");
return;
}
#endregion
MySqlDataManipulator connection = new MySqlDataManipulator();
using (connection)
{
bool res = connection.Connect(MySqlDataManipulator.GlobalConfiguration.GetConnectionString());
if (!res)
{
WriteBodyResponse(ctx, 500, "Unexpected ServerError", "Connection to database failed");
return;
}
#region Action Handling
var users = connection.GetUsersWhere(" Email = \"" + req.Email + "\"");
if (users.Count == 0)
{
WriteBodyResponse(ctx, 404, "Not Found", "User was not found on the server");
return;
}
if (!UserVerificationUtil.VerifyLogin(users[0], req.Email, req.Password))
{
WriteBodyResponse(ctx, 401, "Unauthorized", "Email or password was incorrect");
return;
}
OverallUser loggedInUser = users[0];
LoginStatusTokens tokens = UserVerificationUtil.ExtractLoginTokens(loggedInUser);
UserVerificationUtil.GenerateNewLoginToken(tokens);
if (!connection.UpdateUsersLoginToken(loggedInUser, tokens))
{
WriteBodyResponse(ctx, 500, "Unexpected Server Error", "Failed to write login token to database");
return;
}
JsonDictionaryStringConstructor retConstructor = new JsonDictionaryStringConstructor();
retConstructor.SetMapping("token", tokens.LoginToken);
retConstructor.SetMapping("userId", loggedInUser.UserId);
retConstructor.SetMapping("accessLevel", loggedInUser.AccessLevel);
WriteBodyResponse(ctx, 200, "OK", retConstructor.ToString(), "application/json");
#endregion
}
}
catch (HttpListenerException)
{
//HttpListeners dispose themselves when an exception occurs, so we can do no more.
}
catch (Exception e)
{
WriteBodyResponse(ctx, 500, "Internal Server Error", e.Message);
}
}
/// <summary>
/// Request for a user to receive authentication to make edits to content they have access to. Documention is found in the Web API Enumeration file
/// in the /RepairJob/Requirements tab, starting at row 21
/// </summary>
/// <param name="ctx">The HttpListenerContext to respond to</param>
private void HandlePutRequest(HttpListenerContext ctx)
{
try
{
#region Input Validation
if (!ctx.Request.HasEntityBody)
{
WriteBodyResponse(ctx, 400, "No Body", "Request lacked a body");
return;
}
string reqString = new StreamReader(ctx.Request.InputStream).ReadToEnd();
AuthenticationRequest req = JsonDataObjectUtil <AuthenticationRequest> .ParseObject(reqString);
if (req == null)
{
WriteBodyResponse(ctx, 400, "Incorrect Format", "Request was in the wrong format");
return;
}
if (!ValidateAuthenticationRequest(req))
{
AuthenticationCheckRequest req2 = JsonDataObjectUtil <AuthenticationCheckRequest> .ParseObject(reqString);
if (req2 != null && ValidateAuthCheckRequest(req2))
{
HandleAuthCheckRequest(ctx, req2);
return;
}
WriteBodyResponse(ctx, 400, "Incorrect Format", "Not all fields of the request were filled");
return;
}
#endregion
MySqlDataManipulator connection = new MySqlDataManipulator();
using (connection)
{
bool res = connection.Connect(MySqlDataManipulator.GlobalConfiguration.GetConnectionString());
if (!res)
{
WriteBodyResponse(ctx, 500, "Unexpected ServerError", "Connection to database failed");
return;
}
#region User Validation
var user = connection.GetUserById(req.UserId);
if (user == null)
{
WriteBodyResponse(ctx, 404, "Not Found", "User was not found on the server");
return;
}
if (!UserVerificationUtil.LoginTokenValid(user, req.LoginToken))
{
WriteBodyResponse(ctx, 401, "Unauthorized", "Login Token is incorrect or expired");
return;
}
if (!UserVerificationUtil.VerifyAuthentication(user, req.SecurityQuestion, req.SecurityAnswer))
{
WriteBodyResponse(ctx, 401, "Unauthorized", "Security Answer was incorrect");
return;
}
#endregion
#region Action Handling
LoginStatusTokens tokens = UserVerificationUtil.ExtractLoginTokens(user);
UserVerificationUtil.GenerateNewAuthToken(tokens);
if (!connection.UpdateUsersLoginToken(user, tokens))
{
WriteBodyResponse(ctx, 500, "Unexpected Server Error", "Failed to write login token to database");
return;
}
JsonDictionaryStringConstructor retConstructor = new JsonDictionaryStringConstructor();
retConstructor.SetMapping("token", tokens.AuthToken);
WriteBodyResponse(ctx, 200, "OK", retConstructor.ToString());
#endregion
}
}
catch (HttpListenerException)
{
//HttpListeners dispose themselves when an exception occurs, so we can do no more.
}
catch (Exception e)
{
WriteBodyResponse(ctx, 500, "Internal Server Error", e.Message);
}
}
