private MultipartMessagePart ReadPart()
{
buffer.Start();
while (true)
{
int value = inputStream.ReadByte();
if (value == -1)
{
throw ParserException("Unexpected end of stream (3).");
}
byte byteValue = (byte)value;
bool patternMatched = buffer.WriteByte(byteValue);
if (!patternMatched)
{
continue;
}
MultipartMessagePart part = ParsePart(
buffer.ToArray(),
buffer.Pattern.Length);
if (log.IsDebugEnabled)
{
log.DebugFormat("Found new part (content length: '{0}')", part.Data.Length);
}
return(part);
}
}
public MultipartMessagePart ReadNextPart()
{
try
{
int markerByte1 = inputStream.ReadByte();
int markerByte2 = inputStream.ReadByte();
if (markerByte1 == -1 || markerByte2 == -1)
{
throw ParserException("Unexpected end of stream (1).");
}
if ((byte)markerByte1 == '-' && (byte)markerByte2 == '-')
{
return(null);
}
if ((byte)markerByte1 == '\r' && (byte)markerByte2 == '\n')
{
MultipartMessagePart part = ReadPart();
return(part);
}
throw ParserException("Invalid multipart message: unexpected message part markers.");
}
catch (EndOfStreamException ex)
{
throw new MultipartMessageParserException("Unexpected end of stream.", ex);
}
}
private MultipartMessagePart ParsePart(
byte[] data,
int excludedLastBytes)
{
using (MemoryStream stream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(stream))
{
MultipartMessagePart part = ParsePartHeaders(reader);
// copy the part data into a separate array
byte[] partData = new byte[data.Length - excludedLastBytes - stream.Position];
Array.Copy(data, stream.Position, partData, 0, partData.Length);
part.Data = partData;
return(part);
}
}
private MultipartMessagePart ParsePartHeaders(BinaryReader reader)
{
MultipartMessagePart part = new MultipartMessagePart();
while (true)
{
byte[] bytes = reader.ReadUntilCRLF();
// did we reach the end of the headers list?
if (bytes.Length == 0)
{
break;
}
HeaderField header = HeaderField.Parse(bytes, message.BaseEncoding);
part.AddHeader(header);
}
return(part);
}
public void WriteMessageAsAWhole()
{
string boundary = "-----Test";
MultipartMessage message = new MultipartMessage(HeaderField.Parse("Content-type: multipart/mixed; boundary=-----Test"));
MultipartMessagePart part;
part = new MultipartMessagePart();
part.AddHeader(new HeaderField("Content-Type", "text/plain"));
part.Data = Encoding.UTF8.GetBytes("my text");
message.AddPart(part);
part = new MultipartMessagePart();
part.AddHeader(new HeaderField("Content-Type", "application/xml"));
part.Data = Encoding.UTF8.GetBytes("<tag/>");
message.AddPart(part);
using (MemoryStream stream = new MemoryStream())
{
long writtenBytes;
using (MultipartStreamWriter writer = new MultipartStreamWriter(
stream,
boundary,
Encoding.UTF8))
{
writer.WriteWholeMessage(message);
writtenBytes = writer.BytesWritten;
}
byte[] bytes = stream.ToArray();
Assert.AreEqual(bytes.Length, writtenBytes);
string result = Encoding.UTF8.GetString(bytes);
Assert.AreEqual("\r\n-------Test\r\nContent-Type: text/plain\r\n\r\nmy text\r\n-------Test\r\nContent-Type: application/xml\r\n\r\n<tag/>\r\n-------Test--", result);
}
}
private static MultipartMessagePart ReadPart(
MultipartMessage message,
Stream inputStream,
BinaryBufferWithPatternWatching buffer)
{
buffer.Start();
while (true)
{
int value = inputStream.ReadByte();
if (value == -1)
{
throw ParserException("Unexpected end of stream (3).");
}
byte byteValue = (byte)value;
bool patternMatched = buffer.WriteByte(byteValue);
if (!patternMatched)
{
continue;
}
MultipartMessagePart part = ParsePart(
message,
buffer.ToArray(),
buffer.Pattern.Length);
if (log.IsDebugEnabled)
{
log.DebugFormat("Found part '{0}'", message.BaseEncoding.GetString(part.Data));
}
return(part);
}
}
private static MultipartMessagePart ParsePartHeaders(BinaryReader reader, MultipartMessage message)
{
MultipartMessagePart part = new MultipartMessagePart();
while (true)
{
byte[] bytes = reader.ReadUntilCRLF();
// did we reach the end of the headers list?
if (bytes.Length == 0)
break;
HeaderField header = HeaderField.Parse(bytes, message.BaseEncoding);
part.AddHeader(header);
}
return part;
}
public MultipartMessage ParseMessage(string contentType, Stream inputStream)
{
if (log.IsDebugEnabled)
{
log.DebugFormat("Message content-type: '{0}'", contentType);
}
HeaderField contentTypeField = ParseHeaderField(
HttpConstants.ContentType,
contentType);
MultipartMessage message = new MultipartMessage(contentTypeField);
if (!message.IsMultipart)
{
throw ParserException("This is not a MIME multipart message. The content type '{0}' is not supported", contentType);
}
if (log.IsDebugEnabled)
{
log.DebugFormat("Multipart message boundary: '{0}'", message.Boundary);
}
BinaryBufferWithPatternWatching buffer = new BinaryBufferWithPatternWatching(
ConstructDelimiterBuffer(message));
try
{
SkipToFirstDelimiter(inputStream, buffer);
while (true)
{
int markerByte1 = inputStream.ReadByte();
int markerByte2 = inputStream.ReadByte();
if (markerByte1 == -1 || markerByte2 == -1)
{
throw ParserException("Unexpected end of stream (1).");
}
if ((byte)markerByte1 == '-' && (byte)markerByte2 == '-')
{
break;
}
if ((byte)markerByte1 == '\r' && (byte)markerByte2 == '\n')
{
MultipartMessagePart part = ReadPart(message, inputStream, buffer);
message.AddPart(part);
}
else
{
throw ParserException("Invalid multipart message: unexpected message part markers.");
}
}
return(message);
}
catch (EndOfStreamException ex)
{
throw new MultipartMessageParserException("Unexpected end of stream.", ex);
}
}
public void AddPart(MultipartMessagePart part)
{
parts.Add(part);
}
public void AddPart(MultipartMessagePart part)
{
parts.Add(part);
}
