/// <summary>
/// Authenticates the specified document.
/// </summary>
/// <param name="decoder">The decoder.</param>
public static bool Authenticate(DecoderBase decoder)
{
// if authentication is required
if (decoder.IsAuthenticationRequired)
{
// get the document filename
string filename = null;
if (decoder.SourceStream != null && decoder.SourceStream is FileStream)
{
filename = ((FileStream)decoder.SourceStream).Name;
}
while (true)
{
// create the document password dialog
using (DocumentPasswordForm enterPasswordDialog = new DocumentPasswordForm())
{
enterPasswordDialog.Filename = filename;
// show the document password dialog
DialogResult showDialogResult = enterPasswordDialog.ShowDialog();
// if "OK" button is clicked
if (showDialogResult == DialogResult.OK)
{
DocumentAuthenticationRequest authenticationRequest = new DocumentAuthenticationRequest(
enterPasswordDialog.authenticateTypeComboBox.Text,
enterPasswordDialog.Password);
// uuthenticate the decoder
DocumentAuthorizationResult result = decoder.Authenticate(authenticationRequest);
// if user is NOT authorized
if (!result.IsAuthorized)
{
MessageBox.Show(
string.Format("The {0} password is incorrect.", enterPasswordDialog.authenticateTypeComboBox.Text),
"Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
// if user is authorized
else
{
if (enterPasswordDialog.authenticateTypeComboBox.Text != result.UserName)
{
MessageBox.Show(
string.Format("Authorized as: {0}", result.UserName),
"Authorization Result", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
break;
}
}
// if "Cancel" button is clicked
else
{
return(false);
}
}
}
}
return(true);
}
public FileReaderItem Next()
{
TryAgain:
m_nextPacket = m_stream.Read();
if ((object)m_nextPacket == null)
{
return(FileReaderItem.EndOfStream);
}
if (m_nextPacket.CommandName == "DataStreamNormal")
{
if (m_decoderNormal == null)
{
m_decoderNormal = new NormalDecoder();
}
m_decoderNormal.Load(((CommandDataStreamNormal)m_nextPacket));
m_currentDecoder = m_decoderNormal;
return(FileReaderItem.DataPoint);
}
else if (m_nextPacket.CommandName == "ProducerMetadata")
{
m_metadata = (SttpProducerMetadata)m_nextPacket;
foreach (var item in m_metadata.DataPoints)
{
m_metadataLookup[item.DataPointID] = item;
}
return(FileReaderItem.ProducerMetadata);
}
goto TryAgain;
}
/// <summary>
/// Returns a value indication whether image collection contains single document.
/// </summary>
/// <param name="images">Image collection.</param>
/// <returns><b>True</b> if image collection contains single document; otherwise <b>false</b>.</returns>
private bool ContainsSingleDocument(ImageCollection images)
{
if (images.Count == 0)
{
return(false);
}
if (images.Count == 1)
{
return(true);
}
DecoderBase decoder = images[0].SourceInfo.Decoder;
for (int i = 1; i < images.Count; i++)
{
VintasoftImage image = images[i];
if (decoder != image.SourceInfo.Decoder)
{
return(false);
}
}
return(true);
}
public StreamEngine(Socket fd, Options options, String endpoint)
{
m_handle = fd;
// inbuf = null;
m_insize = 0;
m_inputError = false;
// outbuf = null;
m_outsize = 0;
m_handshaking = true;
m_session = null;
m_options = options;
m_plugged = false;
m_endpoint = endpoint;
m_socket = null;
m_encoder = null;
m_decoder = null;
// Put the socket into non-blocking mode.
Utils.UnblockSocket(m_handle);
// Set the socket buffer limits for the underlying socket.
if (m_options.SendBuffer != 0)
{
m_handle.SendBufferSize = m_options.SendBuffer;
}
if (m_options.ReceiveBuffer != 0)
{
m_handle.ReceiveBufferSize = m_options.ReceiveBuffer;
}
}
private bool Handshake()
{
Debug.Assert(m_handshaking);
// Receive the greeting.
while (m_greetingBytesRead < GreetingSize)
{
ByteArraySegment greetingSegment = new ByteArraySegment(m_greeting, m_greetingBytesRead);
int n = Read(greetingSegment, GreetingSize - m_greetingBytesRead);
if (n == -1)
{
Error();
return false;
}
if (n == 0)
return false;
m_greetingBytesRead += n;
// We have received at least one byte from the peer.
// If the first byte is not 0xff, we know that the
// peer is using unversioned protocol.
if (m_greeting[0] != 0xff)
break;
if (m_greetingBytesRead < 10)
continue;
// Inspect the right-most bit of the 10th byte (which coincides
// with the 'flags' field if a regular message was sent).
// Zero indicates this is a header of identity message
// (i.e. the peer is using the unversioned protocol).
if ((m_greeting[9] & 0x01) == 0)
break;
// The peer is using versioned protocol.
// Send the rest of the greeting, if necessary.
if (!(((byte[]) m_outpos) == ((byte[]) m_greetingOutputBuffer) &&
m_outpos.Offset + m_outsize == GreetingSize))
{
if (m_outsize == 0)
m_ioObject.SetPollout(m_handle);
m_outpos[m_outsize++] = 1; // Protocol version
m_outpos[m_outsize++] = (byte) m_options.SocketType;
}
}
// Is the peer using the unversioned protocol?
// If so, we send and receive rests of identity
// messages.
if (m_greeting[0] != 0xff || (m_greeting[9] & 0x01) == 0)
{
m_encoder = new Encoder(Config.OutBatchSize);
m_encoder.SetMsgSource(m_session);
m_decoder = new Decoder(Config.InBatchSize, m_options.Maxmsgsize);
m_decoder.SetMsgSink(m_session);
// We have already sent the message header.
// Since there is no way to tell the encoder to
// skip the message header, we simply throw that
// header data away.
int headerSize = m_options.IdentitySize + 1 >= 255 ? 10 : 2;
byte[] tmp = new byte[10];
ByteArraySegment bufferp = new ByteArraySegment(tmp);
int bufferSize = headerSize;
m_encoder.GetData(ref bufferp, ref bufferSize);
Debug.Assert(bufferSize == headerSize);
// Make sure the decoder sees the data we have already received.
m_inpos = new ByteArraySegment(m_greeting);
m_insize = m_greetingBytesRead;
// To allow for interoperability with peers that do not forward
// their subscriptions, we inject a phony subsription
// message into the incomming message stream. To put this
// message right after the identity message, we temporarily
// divert the message stream from session to ourselves.
if (m_options.SocketType == ZmqSocketType.Pub || m_options.SocketType == ZmqSocketType.Xpub)
m_decoder.SetMsgSink(this);
}
else if (m_greeting[VersionPos] == 0)
{
// ZMTP/1.0 framing.
m_encoder = new Encoder(Config.OutBatchSize);
m_encoder.SetMsgSource(m_session);
m_decoder = new Decoder(Config.InBatchSize, m_options.Maxmsgsize);
m_decoder.SetMsgSink(m_session);
}
else
{
// v1 framing protocol.
m_encoder = new V1Encoder(Config.OutBatchSize, m_session);
m_decoder = new V1Decoder(Config.InBatchSize, m_options.Maxmsgsize, m_session);
}
// Start polling for output if necessary.
if (m_outsize == 0)
m_ioObject.SetPollout(m_handle);
// Handshaking was successful.
// Switch into the normal message flow.
m_handshaking = false;
return true;
}
