protected override void Init()
{
base.Init();
connectionString = Settings.DS_document;
mode = FolderRuleMode.Undefined;
optMessageFrom = new MessageFrom("MessageSender");
optMessageTo = new MessageTo("MessageReceiver");
optMessageText = new MessageText("MessageText");
optSignedBy = new SignedBy("DocumentSigner");
optDocumentType = new FolderRuleOptions.DocumentType("DocumentType");
optPerson = new Person("LinkedPerson");
optDocument = new FolderRuleOptions.Document("LinkedDocuments");
optNoMessageText = new NotMessageText("NotMessageText");
optNotSignedBy = new NotSignetBy("NoDocumentSigner");
optNoPerson = new NoPerson("NoLinkedPerson");
optNoDocument = new NoDocument("NoLinkedDocuments");
allOptions = new Option[]
{
optMessageFrom,
optMessageTo,
optMessageText,
optSignedBy,
optDocumentType,
optPerson,
optDocument,
optNoDocument,
optNoMessageText,
optNoPerson,
optNotSignedBy
};
}
/// <summary>
/// Applies a digital signature to the collection.
///
/// The signature is generated when the document is saved, so you can still modify the collection after this call.
/// </summary>
public void AddSignature(X509Certificate2 signerCertificate)
{
if (signerCertificate == null)
{
throw new ArgumentNullException(nameof(signerCertificate));
}
// Cannot add signatures to the collection if the document itself is signed!
Document.VerifyIsNotReadOnly();
if (SignedBy.Contains(signerCertificate))
{
throw new InvalidOperationException("The collection is already signed by this identity.");
}
CryptographyHelpers.ValidateSignerCertificate(signerCertificate);
_newSigners.Add(signerCertificate);
}
internal override void SaveChanges(XmlDocument document, XmlNamespaceManager namespaces)
{
var containerElement = (XmlElement)document.SelectSingleNode("/cpix:CPIX/cpix:" + ContainerName, namespaces);
if (Count == 0 && SignedBy.Count() == 0)
{
// We don't have any contents to put in it AND we don't have any signatures to apply.
// This is the only scenario where we do not need the container element in the document, so remove it
// and consider the save operation completed. All other paths follow the longer logic chain.
if (containerElement != null)
{
containerElement.ParentNode.RemoveChild(containerElement);
}
return;
}
// We need a container element, so create one if it is missing.
if (containerElement == null)
{
var rootElement = document.DocumentElement;
// This namespace must exist, as the root element itself uses it. We will reuse the same prefix.
var prefix = rootElement.GetPrefixOfNamespace(Constants.CpixNamespace);
var element = document.CreateElement(prefix, ContainerName, Constants.CpixNamespace);
containerElement = XmlHelpers.InsertTopLevelCpixXmlElementInCorrectOrder(element, document);
}
// Add any new items and then mark them as loaded items.
foreach (var item in _newItems.ToArray())
{
var element = SerializeEntity(document, namespaces, containerElement, item);
_newItems.Remove(item);
_loadedItemsData.Add(new Tuple <TEntity, XmlElement>(item, element));
}
SaveNewSignatures(document, containerElement);
}
