public static bool CheckAnswer(string username, string question, string answer)
{
bool valid = false;
using (EFDbContext context = new EFDbContext())
{
var login = (from l in context.logins
where l.SecretQuestion == (string)question
&& l.SecretAnswer == (string)answer
&& l.UserName == (string)username
select l).FirstOrDefault();
if (login != null)
{
valid = true;
}
else
{
valid = false;
}
}
return valid;
}
public static bool CheckEmailAddress(string email, ref int uid, ref string username, ref string question, ref int errors)
{
bool valid = false;
using (EFDbContext context = new EFDbContext())
{
var eadd = (from e in context.users
where e.EmailAdd == email
select e).FirstOrDefault();
if (eadd != null)
{
// get login info
var uname = (from u in context.logins
where u.UID == eadd.uniqueID
select u).FirstOrDefault();
if (uname != null)
{
uid = uname.UID;
username = uname.UserName;
question = uname.SecretQuestion;
errors = uname.Errors;
valid = true;
}
else
{
valid = false;
}
}
else
{
valid = false;
}
}
return valid;
}
public static bool CheckUserName(ref int uid, string username, ref string question, ref int errors)
{
bool valid = false;
using (EFDbContext context = new EFDbContext())
{
var uname = (from u in context.logins
where u.UserName == username
select u).FirstOrDefault();
if (uname != null)
{
uid = uname.UID;
username = uname.UserName;
question = uname.SecretQuestion;
errors = uname.Errors;
valid = true;
}
else
{
valid = false;
}
}
return valid;
}
public static bool ValidateLogin(string username, string plainpassword)
{
bool valid = false;
MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();
byte[] hashedDataBytes = null;
UTF8Encoding encoder = null;
using (EFDbContext context = new EFDbContext())
{
encoder = new UTF8Encoding();
hashedDataBytes = md5Hasher.ComputeHash(encoder.GetBytes(plainpassword));
var login = (from lo in context.logins
where lo.UserName == username
&& lo.EncryptedPassword == hashedDataBytes
select lo).FirstOrDefault();
if (login != null)
{
// To DO: log the logging info
// create login session
HttpContext.Current.Session.Add("LoggedUser", login);
valid = true;
}
}
return valid;
}
public static bool UpdateLoginRecord(IProcessor processor, string email, string username, int uid)
{
bool valid = false;
try
{
// generate new password
string newPasword = Reusables.GetPassword();
// update login record
MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();
byte[] hashedDataBytes = null;
UTF8Encoding encoder = new UTF8Encoding();
hashedDataBytes = md5Hasher.ComputeHash(encoder.GetBytes(newPasword));
using (EFDbContext context = new EFDbContext())
{
var login = (from l in context.logins
where l.UID == uid
select l).FirstOrDefault();
if (login != null)
{
login.Errors = 0;
login.Modified_On = DateTime.Now;
login.EncryptedPassword = hashedDataBytes;
// *** marked out for testing
context.SaveChanges();
}
}
// send welcome email
processor.ProcessNewPasswordSendEmail(email, username, newPasword);
valid = true;
}
catch (Exception ex)
{
}
return valid;
}
public static void InsertLoginAttempt(string ipaddress)
{
using (EFDbContext context = new EFDbContext())
{
LoginAttempts la = new LoginAttempts();
la.ClientIP = ipaddress;
la.Unlocked = 0;
la.DateAdded = DateTime.Now;
context.loginAttempts.Add(la);
context.SaveChanges();
}
}
public static void IncrementErrors(int uid)
{
using (EFDbContext context = new EFDbContext())
{
var login = (from l in context.logins
where l.UID == uid
select l).FirstOrDefault();
if (login != null)
{
login.Errors = login.Errors + 1;
login.Modified_On = DateTime.Now;
context.SaveChanges();
}
}
}
public static bool GetEmailAddress(ref string email, int uid)
{
bool valid = false;
using (EFDbContext context = new EFDbContext())
{
var ea = (from e in context.users
where e.uniqueID == (int)uid
select e).FirstOrDefault();
if (ea != null)
{
valid = true;
email = ea.EmailAdd;
}
else
{
valid = false;
}
}
return valid;
}
public static bool DetemineLock(string ipaddress)
{
bool valid = false;
using (EFDbContext context = new EFDbContext())
{
DateTime currentDate = Convert.ToDateTime(DateTime.Now.ToShortDateString());
var loginattempts = (from la in context.loginAttempts
where la.ClientIP == ipaddress
&& la.Unlocked == 0
&& la.DateAdded >= currentDate
select la).AsEnumerable();
int count = loginattempts.Count();
if(count > lockoutAttempts)
{
valid = true; // account locked
}
}
return valid;
}
