internal virtual PDFEncrypterFactory GetEncrypterFactory()
{
PDFEncrypterFactory factory = PDFEncrypterFactory.CreateFactory(this.Version, this.Revision);
if (null == factory)
{
throw new PDFSecurityException(string.Format("There is no available encryptor for the version and revision " + this.Version + "." + this.Revision));
}
return(factory);
}
//implementation methods
protected override PDFWriter DoGetInstance(Document forDoc, Stream stream, int generation, PDFDocumentRenderOptions options, PDFTraceLog log)
{
if (null == forDoc.DocumentID)
{
forDoc.DocumentID = PDFDocumentID.Create();
}
PDFEncrypterFactory factory = this.GetEncrypterFactory();
IDocumentPasswordSettings settings;
string path = forDoc.LoadedSource;
SecureString owner;
SecureString user;
PermissionFlags protection;
if (Options.SecurityOptions.TryGetPasswordSettings(path, out settings))
{
owner = settings.OwnerPassword;
user = settings.UserPassword;
protection = settings.DefaultPermissions;
if (settings.AllowDocumentOverrides)
{
if (null != this.OwnerPassword)
{
owner = this.OwnerPassword;
}
if (null != this.UserPassword)
{
user = this.UserPassword;
}
protection |= this.GetRestrictions();
}
}
else
{
protection = this.GetRestrictions();
owner = this.OwnerPassword;
user = this.UserPassword;
}
PDFEncryter enc = factory.InitEncrypter(owner, user, forDoc.DocumentID, protection);
PDFSecureWriter14 writer = new PDFSecureWriter14(stream, log, enc);
return(writer);
}
