internal static bool validateLicenseFile(string licFile, ref LicenseTerms lic)
{
try
{
LicenseDTO license = null;
if (File.Exists(licFile))
{
license = LicenseDTO.FromString(File.ReadAllText(licFile));
}
else
{
//TODO : file not exists
}
if (license != null)
{
lic = ValidateLicense(license);
return(true);
}
else
{
//TODO : "Invalid License File Not Supplied!"
return(false);
}
}
catch (SecurityException se)
{
// display the reason for the license check failure:
//TODO :
}
return(false);
}
private void btnGenerateLic_Click(object sender, EventArgs e)
{
saveFileDialog.CheckFileExists = false;
saveFileDialog.FileName = "SmartDataServiceFocas.lic";
List <CNCData> cNCDataList = new List <CNCData>();
foreach (var item in bindingSource1.DataSource as IEnumerable <CNCData> )
{
cNCDataList.Add(new CNCData {
IsOEM = item.IsOEM, CNCdata1 = item.CNCdata1, CNCdata2 = item.CNCdata2, CNCdata3 = item.CNCdata3
});
}
LicenseTerms terms = new LicenseTerms
{
Customer = txtCustomer.Text.Trim(),
Plant = txtPlant.Text.Trim(),
Email = txtEmail.Text.Trim(),
LicType = cmdLicType.SelectedItem.ToString(),
StartDate = dtpStartDate.Value.Date.ToString("yyyy-MM-dd"),
ExpiresAt = dtpExpiresAt.Value.Date.ToString("yyyy-MM-dd"),
ComputerSerialNo = txtSerialNo.Text.Trim(),
CNCData = cNCDataList,
};
LicenseDTO licDto = LicenseServer.CreateLicense(terms);
if (saveFileDialog.ShowDialog(this) == DialogResult.OK)
{
licDto.SaveLicenseStringFinal(saveFileDialog.FileName);
}
}
internal static LicenseTerms ValidateLicense(LicenseDTO license)
{
RSACryptoServiceProvider rsa = Utility.GetPublicKeyFromAssemblyAtClient(Assembly.GetExecutingAssembly());
byte[] dataToVerify = Convert.FromBase64String(license.LicenseTerms);
byte[] signature = Convert.FromBase64String(license.Signature);
// verify that the license-terms match the signature data
if (rsa.VerifyData(dataToVerify, new SHA1CryptoServiceProvider(), signature))
{
return(LicenseTerms.FromString(license.LicenseTerms));
}
else
{
return(null);
}
}