public void Validate(LicenseCriteria licenseCriteria)
{
if (DateTimeOffset.UtcNow > licenseCriteria.ExpirationDate)
{
throw new LicenseExpiredException(string.Format("License expired on {0:O}", licenseCriteria.ExpirationDate));
}
}
public LicenseCriteria Deserialize(XDocument document)
{
if (document == null)
{
throw new ArgumentNullException(nameof(document));
}
var license = document.Root;
if (license == null || license.Name != LicenseElements.License)
{
throw new InvalidDataException("Document is invalid. A root node was expected");
}
var licenseDetails = new Dictionary <string, string>();
foreach (var element in license.Elements())
{
if (element.Name.LocalName == LicenseElements.Signature)
{
continue;
}
licenseDetails.Add(element.Name.LocalName, element.Value);
}
var licenseCriteria = new LicenseCriteria
{
Id = Guid.ParseExact(licenseDetails[LicenseElements.Id], "D"),
IssueDate = ParseDateTime(licenseDetails[LicenseElements.IssueDate]),
Type = licenseDetails[LicenseElements.Type],
ExpirationDate = ParseDateTime(licenseDetails[LicenseElements.ExpirationDate]),
};
licenseDetails.Remove(LicenseElements.Id);
licenseDetails.Remove(LicenseElements.IssueDate);
licenseDetails.Remove(LicenseElements.Type);
licenseDetails.Remove(LicenseElements.ExpirationDate);
licenseCriteria.MetaData = licenseDetails;
return(licenseCriteria);
}
public License Generate(CryptoKey privateKey, LicenseCriteria licenseCriteria)
{
if (privateKey == null)
{
throw new ArgumentNullException(nameof(privateKey));
}
if (licenseCriteria == null)
{
throw new ArgumentNullException(nameof(licenseCriteria));
}
var serializer = new LicenseCriteriaSerializer();
var document = serializer.Serialize(licenseCriteria);
var documentSigning = new DocumentSigning();
documentSigning.Sign(document, privateKey);
return(new License(document));
}
public XDocument Serialize(LicenseCriteria licenseCriteria)
{
if (licenseCriteria == null)
{
throw new ArgumentNullException(nameof(licenseCriteria));
}
var document = new XDocument();
var licenseElement = new XElement(LicenseElements.License);
document.Add(licenseElement);
var id = new XElement(LicenseElements.Id, licenseCriteria.Id.ToString("D"));
licenseElement.Add(id);
var issueDate = new XElement(LicenseElements.IssueDate, FormatDateTime(licenseCriteria.IssueDate));
licenseElement.Add(issueDate);
var type = new XElement(LicenseElements.Type, licenseCriteria.Type);
licenseElement.Add(type);
var expirationDate = new XElement(LicenseElements.ExpirationDate, FormatDateTime(licenseCriteria.ExpirationDate));
licenseElement.Add(expirationDate);
foreach (var metaData in licenseCriteria.MetaData)
{
var element = new XElement(metaData.Key, metaData.Value);
licenseElement.Add(element);
}
return(document);
}
