static bool DoesCallExist(Guid guid, webServiceEntities dataContext)
{
var dc = dataContext ?? new webServiceEntities();
var call = from t in dc.paypalwebservicecalls
where t.guid == guid
select t;
return call.Count() > 0;
}
static void UpdateWebServiceCall(Guid guid, string data, webServiceEntities dataContext)
{
try
{
var dc = dataContext ?? new webServiceEntities();
var row = dc.paypalwebservicecalls.Single(g => g.guid == guid);
row.data = data;
dc.SaveChanges();
}
catch (Exception exception)
{
Logger.TraceErr(exception);
Logger.TraceErr("Transaction data: " + data);
}
}
/// <summary>
/// Inserts a paypal webservice call row and returns the unique id for the row.
/// </summary>
/// <exception cref="PayPalCallAlreadyMade"></exception>
static void CreateWebServiceCall(Guid guid, webServiceEntities dataContext)
{
var dc = dataContext ?? new webServiceEntities();
if (DoesCallExist(guid, dc))
throw new PayPalCallAlreadyMade(guid);
dc.AddTopaypalwebservicecalls(new paypalwebservicecall { guid = guid, created = DateTime.Now });
dc.SaveChanges();
}
static void InsertPayPalTransaction(string data, webServiceEntities dataContext)
{
try
{
var dc = dataContext ?? new webServiceEntities();
var datas = data.Split(',');
var row = new paypaltransaction
{
TransactionId = datas[1],
Amount = datas[2],
AVSCode = datas[3],
CVV2Code = datas[4],
FMFDetails = data
};
dc.AddTopaypaltransactions(row);
dc.SaveChanges();
}
catch (Exception exception)
{
Logger.TraceErr(exception);
Logger.TraceErr("Transaction data: " + data);
}
}
public byte[] DoPayment(byte[] paymentInfo)
{
byte[] ret;
var response = MakeErrorString(0, "Error", "Unknown server error.");
CreditCardInformation creditCardInformation = null;
webServiceEntities dc = null;
try
{
dc = new webServiceEntities();
using (var stream = new MemoryStream())
{
Crypto.SetKey(AssemblyDex.Pigs);
Crypto.ResetIV();
var decryptedPaymentBytes = Crypto.DecryptBytes(paymentInfo);
stream.Write(decryptedPaymentBytes, 0, decryptedPaymentBytes.Length);
stream.Seek(0, SeekOrigin.Begin);
var formatter = new BinaryFormatter();
creditCardInformation = (CreditCardInformation)formatter.Deserialize(stream);
}
if (creditCardInformation.Id == Guid.Empty)
response = MakeErrorString(1, "Error",
"Invalid credit card information id.");
else
{
// check if this is a duplicate transaction
CreateWebServiceCall(creditCardInformation.Id, dc);
IPAddress address;
if (IPAddress.TryParse(creditCardInformation.IPAddress, out address))
{
if (PayPalUtils.DoPayment(creditCardInformation, address, out response))
InsertPayPalTransaction(response, dc);
}
else
response = MakeErrorString(2, "Error", "Invalid IP address.");
}
}
catch (Exception exception)
{
Logger.TraceErr(exception);
response = MakeErrorString(3, "Exception", exception.Message);
}
finally
{
Crypto.SetKey(AssemblyDex.Fly);
Crypto.ResetIV();
ret = Crypto.EncryptBytes((Crypto.AsciiToBytes(response)));
if (creditCardInformation != null)
UpdateWebServiceCall(creditCardInformation.Id, response, dc);
}
return ret;
}
public byte[] DeleteInformationKey(byte[] infoKey)
{
byte[] ret;
var data = string.Empty;
try
{
Crypto.SetKey(AssemblyDex.Pigs);
Crypto.ResetIV();
var infoKeyBytes = Crypto.DecryptBytes(infoKey);
var dc = new webServiceEntities();
var decryptedInfoKey = Crypto.BytesToAscii(infoKeyBytes);
var dd = (from info in dc.information
where info.InfoKey == decryptedInfoKey
select info).FirstOrDefault();
if (dd != null)
{
dc.DeleteObject(dd);
dc.SaveChanges();
}
else
{
data = "@@@NotFound";
}
}
catch (Exception exception)
{
Logger.TraceErr(exception);
data = "@@@Exception: " + exception.Message;
}
finally
{
Crypto.SetKey(AssemblyDex.Fly);
Crypto.ResetIV();
ret = Crypto.Encrypt(data);
}
return ret;
}
public byte[] GetInformationKeys(byte[] key)
{
byte[] ret;
var data = string.Empty;
try
{
Crypto.SetKey(AssemblyDex.Pigs);
Crypto.ResetIV();
var receivedInformationKey = Crypto.DecryptBytes(key);
var guid = new Guid(receivedInformationKey);
if (guid != new Guid(Properties.Settings.Default.InformationKey))
{
throw new InvalidOperationException("Invalid key received.");
}
var dc = new webServiceEntities();
var informations = (from info in dc.information
select info.InfoKey).ToList();
data = string.Join(Environment.NewLine, informations);
}
catch (Exception exception)
{
Logger.TraceErr(exception);
data = "@@@Exception: " + exception.Message;
}
finally
{
Crypto.SetKey(AssemblyDex.Fly);
Crypto.ResetIV();
ret = Crypto.Encrypt(data);
}
return ret;
}