/// <summary>
/// Stores specified message header + specified lines of body to the specified stream.
/// </summary>
/// <param name="sequenceNumber">Message 1 based sequence number.</param>
/// <param name="stream">Stream where to store data.</param>
/// <param name="lineCount">Number of lines of message body to get.</param>
internal void GetTopOfMessage(int sequenceNumber, Stream stream, int lineCount)
{
TcpStream.WriteLine("TOP " + sequenceNumber + " " + lineCount);
// Read first line of reply, check if it's ok.
string line = ReadLine();
if (line.StartsWith("+OK"))
{
SmartStream.ReadPeriodTerminatedAsyncOP readTermOP =
new SmartStream.ReadPeriodTerminatedAsyncOP(stream,
999999999,
SizeExceededAction.ThrowException);
TcpStream.ReadPeriodTerminated(readTermOP, false);
if (readTermOP.Error != null)
{
throw readTermOP.Error;
}
LogAddWrite(readTermOP.BytesStored, readTermOP.BytesStored + " bytes read.");
}
else
{
throw new POP3_ClientException(line);
}
}
/// <summary>
/// Sends and logs specified line to connected host.
/// </summary>
/// <param name="line">Line to send.</param>
protected void WriteLine(string line)
{
if (line == null)
{
throw new ArgumentNullException("line");
}
int countWritten = TcpStream.WriteLine(line);
LogAddWrite(countWritten, line);
}
/// <summary>
/// Authenticates user.
/// </summary>
/// <param name="userName">User login name.</param>
/// <param name="password">Password.</param>
/// <param name="tryApop"> If true and POP3 server supports APOP, then APOP is used, otherwise normal login used.</param>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
/// <exception cref="InvalidOperationException">Is raised when POP3 client is not connected or is already authenticated.</exception>
/// <exception cref="POP3_ClientException">Is raised when POP3 server returns error.</exception>
public void Authenticate(string userName, string password, bool tryApop)
{
if (IsDisposed)
{
throw new ObjectDisposedException(GetType().Name);
}
if (!IsConnected)
{
throw new InvalidOperationException("You must connect first.");
}
if (IsAuthenticated)
{
throw new InvalidOperationException("Session is already authenticated.");
}
// Supports APOP, use it.
if (tryApop && m_ApopHashKey.Length > 0)
{
string hexHash = Core.ComputeMd5(m_ApopHashKey + password, true);
int countWritten = TcpStream.WriteLine("APOP " + userName + " " + hexHash);
LogAddWrite(countWritten, "APOP " + userName + " " + hexHash);
string line = ReadLine();
if (line.StartsWith("+OK"))
{
m_pAuthdUserIdentity = new GenericIdentity(userName, "apop");
}
else
{
if (AuthFailed != null)
{
AuthFailed.Invoke(line);
}
throw new POP3_ClientException(line);
}
}
// Use normal LOGIN, don't support APOP.
else
{
int countWritten = TcpStream.WriteLine("USER " + userName);
LogAddWrite(countWritten, "USER " + userName);
string line = ReadLine();
if (line.StartsWith("+OK"))
{
countWritten = TcpStream.WriteLine("PASS " + password);
LogAddWrite(countWritten, "PASS <***REMOVED***>");
line = ReadLine();
if (line.StartsWith("+OK"))
{
m_pAuthdUserIdentity = new GenericIdentity(userName, "pop3-user/pass");
}
else
{
if (AuthFailed != null)
{
AuthFailed.Invoke(line);
}
throw new POP3_ClientException(line);
}
}
else
{
if (AuthFailed != null)
{
AuthFailed.Invoke(line);
}
throw new POP3_ClientException(line);
}
}
if (IsAuthenticated)
{
if (AuthSucceed != null)
{
AuthSucceed.Invoke();
}
FillMessages();
}
}
