/// <summary>
/// Initializes an instance of <see cref="EnvelopedSignatureReader"/>
/// </summary>
/// <param name="reader">a <see cref="XmlReader"/> pointing to XML that may contain an enveloped signature.</param>
/// <remarks>If a <Signature> element is found, the <see cref="Signature"/> will be set.</remarks>
/// <exception cref="ArgumentNullException">if <paramref name="reader"/> is null.</exception>
public EnvelopedSignatureReader(XmlReader reader)
{
if (reader == null)
{
throw LogArgumentNullException(nameof(reader));
}
_tokenStreamReader = new XmlTokenStreamReader(CreateDictionaryReader(reader));
InnerReader = _tokenStreamReader;
}
/// <summary>
/// Initializes a new instance of <see cref="XmlTokenStreamReader"/> for creating a <see cref="XmlTokenStream"/>.
/// </summary>
/// <param name="reader">an <see cref="XmlDictionaryReader"/> to capture the <see cref="XmlTokenStream"/>.</param>
/// <exception cref="ArgumentNullException">if <paramref name="reader"/> if null.</exception>
/// <exception cref="ArgumentException">if <paramref name="reader"/>.IsStartElement() is false.</exception>
public XmlTokenStreamReader(XmlDictionaryReader reader)
{
if (reader == null)
{
throw LogArgumentNullException(nameof(reader));
}
if (!reader.IsStartElement())
{
throw LogExceptionMessage(new ArgumentException(FormatInvariant(LogMessages.IDX30026, reader.NodeType)));
}
// When multiple signed elements are being processed, the EnvelopedSignatureReader always creates a new XmlTokenStreamReader.
// This creates a chain of readers.
// The outer reader need to record the position of its 'Signature' element.
// When calculating the digest all inner 'Signatures' are considered as inner text.
// This allows for embedded signed elements.
_innerTokenStreamReader = reader as XmlTokenStreamReader;
TokenStream = new XmlTokenStream();
InnerReader = reader;
Record();
}
