protected override CompletionResponse Behaviour()
{
Exception exception = null;
IPart partByAttachment = this._message.GetPartByAttachment(this._attachmentDescription);
uint commandId = base._dispatcher.SendCommand(string.Format("UID FETCH {0} (BODY.PEEK[{1}] BODY.PEEK[{1}.MIME])", this._message.Uid, this._message.GetPartIndex(partByAttachment)), base.filter);
IMAP4Response response = base._dispatcher.GetResponse(commandId);
while (!response.IsCompletionResponse())
{
if (response.Name != "FETCH")
{
throw new UnexpectedResponseException("Unexpected response");
}
ulong size = base.GetSize(response);
FileContentWriter writer = new FileContentWriter(this._attachmentDirectory);
try
{
writer.Open();
string str = string.Empty;
while (size > 0L)
{
ulong num3 = (size > 0x1000L) ? ((ulong)0x1000L) : size;
byte[] bytes = base._dispatcher.GetRawData(num3);
byte[] data = bytes;
if (partByAttachment.Header.ContentTransferEncoding == EContentTransferEncoding.Base64)
{
string str2 = str + Encoding.UTF8.GetString(bytes, 0, bytes.Length).Replace("\r\n", "");
data = Convert.FromBase64String(str2.Substring(0, str2.Length - (str2.Length % 4)));
str = str2.Substring(str2.Length - (str2.Length % 4));
}
writer.Write(data);
size -= num3;
}
}
catch (Exception exception2)
{
exception = exception2;
base._dispatcher.GetRawData(size);
}
finally
{
writer.Close();
}
this._attachmentDescription.DiskFilename = writer.Filename;
byte[] rawData = base._dispatcher.GetRawData();
string s = Encoding.UTF8.GetString(rawData, 0, rawData.Length) + "\r\n";
rawData = Encoding.UTF8.GetBytes(s);
Match match = new Regex("{(?<size>[0-9]+)}|(?<size>NIL)").Match(s);
if (match.Success && (match.Groups["size"].Value != "NIL"))
{
size = ulong.Parse(match.Groups["size"].Value);
byte[] sourceArray = base._dispatcher.GetRawData(size);
byte[] destinationArray = new byte[rawData.Length + sourceArray.Length];
Array.Copy(rawData, destinationArray, rawData.Length);
Array.Copy(sourceArray, 0, destinationArray, rawData.Length, sourceArray.Length);
this._message = new MessageDescriptionParser().Parse(this._message, destinationArray, this._message.Uid, this._attachmentDirectory);
base._dispatcher.GetRawData();
}
response = base._dispatcher.GetResponse(commandId);
}
if (exception != null)
{
throw exception;
}
return(new CompletionResponse(response.Response));
}
public ContentPartParser(string attachmentDirectory)
{
this._contentWriter = new FileContentWriter(attachmentDirectory);
}
