private ImapResponse ParseResponce(ByteString line, ref IParsingContext parsingContext)
{
// response = *(continue-req / response-data) response-done
// continue-req = "+" SP (resp-text / base64) CRLF
if (line.StartsWith(continueReqMark))
return new ImapCommandContinuationRequest(line.ToString(2, line.Length - 4)); // remove leading "+" SP and trailing CRLF
// greeting = "*" SP (resp-cond-auth / resp-cond-bye) CRLF
// response-done = response-tagged / response-fatal
// response-data = "*" SP (resp-cond-state / resp-cond-bye /
// mailbox-data / message-data / capability-data) CRLF
// response-fatal = "*" SP resp-cond-bye CRLF
// ; Server closes connection immediately
// response-tagged = tag SP resp-cond-state CRLF
// ("*" / tag) SP
var tagSep = line.IndexOf(Octets.SP);
if (tagSep == -1)
// response-done and response-data must contain SP
throw new ImapMalformedResponseException("malformed response-done/response-data", line.ToString());
var untagged = (tagSep == 1 && line[0] == ImapOctets.Asterisk);
// ("OK" / "BAD" / "NO" / "BYE" / "PREAUTH" / text) SP
var respCondSep = line.IndexOf(Octets.SP, tagSep + 1);
var cond = ImapResponseCondition.Undefined;
if (respCondSep == -1) {
if (!untagged)
throw new ImapMalformedResponseException("malformed response-data", line.ToString());
//else
// '* SEARCH\r\n' (mailbox-data which contains no SP)
}
else {
cond = ParseCondition(line.Substring(tagSep + 1, respCondSep - tagSep - 1));
}
if (cond != ImapResponseCondition.Undefined || line.StartsWith(respCondMark)) {
// resp-cond-auth / resp-cond-state / resp-cond-bye
var responseText = ParseRespText((cond == ImapResponseCondition.Undefined)
? line.Substring(tagSep + 1)
: line.Substring(respCondSep + 1));
if (untagged)
return new ImapUntaggedStatusResponse((ImapResponseCondition)cond,
responseText);
else
return new ImapTaggedStatusResponse(line.ToString(0, tagSep),
(ImapResponseCondition)cond,
responseText);
}
// mailbox-data / message-data / capability-data etc.
return ParseDataResponse(line, ref parsingContext);
}
private static MimeMessage ParseBody(LineOrientedStream stream, MimeHeaderCollection headers)
{
var message = new MimeMessage(headers);
ParseContentType(message);
ParseContentTransferEncoding(message);
ParseContentDisposition(message);
// read and parse content
MemoryStream contentStream;
if (message.MimeType == null || !message.MimeType.TypeEquals("multipart")) {
contentStream = new MemoryStream(1024);
stream.CopyTo(contentStream, MimeFormat.Standard.Folding);
message.Content = contentStream;
return message;
}
// multipart/*
var parts = new List<MimeMessage>();
var delimiter = new ByteString("--" + message.Boundary);
var closeDelimiter = new ByteString("--" + message.Boundary + "--");
MemoryStream body = null;
ByteString line = null;
ByteString lastLine = null;
contentStream = new MemoryStream(1024);
for (;;) {
if (lastLine != null)
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length);
var l = stream.ReadLine();
if (l == null)
break;
lastLine = line;
line = new ByteString(l);
if (line.StartsWith(delimiter)) {
if (lastLine != null) {
if (lastLine.EndsWith(Octets.CRLF))
// CRLF "--" boundary
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length - 2);
else
// LF "--" boundary or CR "--" boundary
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length - 1);
}
contentStream.Position = 0;
if (body == null)
body = contentStream;
else
parts.Add(Parse(contentStream));
if (line.StartsWith(closeDelimiter))
break;
else
contentStream = new MemoryStream(1024);
lastLine = null;
}
}
message.Content = body;
message.SubParts.AddRange(parts);
return message;
}
public void TestStartsWithString()
{
var str = new ByteString("abcde");
Assert.IsTrue(str.StartsWith("abc"));
Assert.IsTrue(str.StartsWith("abcde"));
Assert.IsFalse(str.StartsWith("abd"));
Assert.IsFalse(str.StartsWith("abcdef"));
}
