/// <summary>
/// Is called when incoming SMTP message reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void MessageReadingCompleted(SmartStream.ReadPeriodTerminatedAsyncOP op)
{
try{
if(op.Error != null){
if(op.Error is LineSizeExceededException){
SendFinalResponse(new SMTP_t_ReplyLine(503,"500 Line too long.",true));
}
else if(op.Error is DataSizeExceededException){
SendFinalResponse(new SMTP_t_ReplyLine(503,"552 Too much mail data.",true));
}
else{
m_pException = op.Error;
}
m_pSession.OnMessageStoringCanceled();
}
else{
// Log.
m_pSession.LogAddRead(op.BytesStored,"Readed " + op.BytesStored + " message bytes.");
SMTP_Reply reply = new SMTP_Reply(250,"DATA completed in " + (DateTime.Now - m_StartTime).TotalSeconds.ToString("f2") + " seconds.");
reply = m_pSession.OnMessageStoringCompleted(reply);
SendFinalResponse(SMTP_t_ReplyLine.Parse(reply.ReplyCode + " " + reply.ReplyLines[0]));
}
}
catch(Exception x){
m_pException = x;
}
// We got some unknown error, we are done.
if(m_pException != null){
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when DATA command message sending has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>op</b> is null reference.</exception>
private void DataMsgSendingCompleted(SmartStream.WritePeriodTerminatedAsyncOP op)
{
if(op == null){
throw new ArgumentNullException("op");
}
try{
if(op.Error != null){
m_pException = op.Error;
m_pSmtpClient.LogAddException("Exception: " + m_pException.Message,m_pException);
SetState(AsyncOP_State.Completed);
}
else{
// Log
m_pSmtpClient.LogAddWrite(op.BytesWritten,"Sent message " + op.BytesWritten + " bytes.");
// Read DATA command final response.
ReadResponseAsyncOP readResponseOP = new ReadResponseAsyncOP();
readResponseOP.CompletedAsync += delegate(object s,EventArgs<ReadResponseAsyncOP> e){
DataReadFinalResponseCompleted(readResponseOP);
};
if(!m_pSmtpClient.ReadResponseAsync(readResponseOP)){
DataReadFinalResponseCompleted(readResponseOP);
}
}
}
catch(Exception x){
m_pException = x;
m_pSmtpClient.LogAddException("Exception: " + m_pException.Message,m_pException);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server RETR response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void RetrReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
SmartStream.ReadPeriodTerminatedAsyncOP readMsgOP = new SmartStream.ReadPeriodTerminatedAsyncOP(m_pStream,long.MaxValue,SizeExceededAction.ThrowException);
readMsgOP.Completed += delegate(object sender,EventArgs<SmartStream.ReadPeriodTerminatedAsyncOP> e){
MessageReadingCompleted(readMsgOP);
};
if(m_pPop3Client.TcpStream.ReadPeriodTerminated(readMsgOP,true)){
MessageReadingCompleted(readMsgOP);
}
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server DELE response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void DeleReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
m_pOwner.m_IsMarkedForDeletion = true;
SetState(AsyncOP_State.Completed);
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void AuthReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Authentication succeeded.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Start filling messages info.
POP3_Client.FillMessagesAsyncOP fillOP = new FillMessagesAsyncOP();
fillOP.CompletedAsync += delegate(object sender,EventArgs<FillMessagesAsyncOP> e){
FillMessagesCompleted(fillOP);
};
if(!m_pPop3Client.FillMessagesAsync(fillOP)){
FillMessagesCompleted(fillOP);
}
}
// Continue authenticating.
else if(op.LineUtf8.StartsWith("+")){
// + base64Data, we need to decode it.
byte[] serverResponse = Convert.FromBase64String(op.LineUtf8.Split(new char[]{' '},2)[1]);
byte[] clientResponse = m_pSASL.Continue(serverResponse);
// We need just send SASL returned auth-response as base64.
byte[] buffer = Encoding.UTF8.GetBytes(Convert.ToBase64String(clientResponse) + "\r\n");
// Log
m_pPop3Client.LogAddWrite(buffer.Length,Convert.ToBase64String(clientResponse));
// Start auth-data sending.
m_pPop3Client.TcpStream.BeginWrite(buffer,0,buffer.Length,this.AuthCommandSendingCompleted,null);
}
// Authentication rejected.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server STLS response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void StlsReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Log
m_pPop3Client.LogAddText("Starting TLS handshake.");
SwitchToSecureAsyncOP switchSecureOP = new SwitchToSecureAsyncOP(m_pCertCallback);
switchSecureOP.CompletedAsync += delegate(object s,EventArgs<SwitchToSecureAsyncOP> e){
SwitchToSecureCompleted(switchSecureOP);
};
if(!m_pPop3Client.SwitchToSecureAsync(switchSecureOP)){
SwitchToSecureCompleted(switchSecureOP);
}
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server CAPA response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void CapaReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Read capa-list.
SmartStream.ReadLineAsyncOP readLineOP = new SmartStream.ReadLineAsyncOP(new byte[8000],SizeExceededAction.JunkAndThrowException);
readLineOP.Completed += delegate(object s,EventArgs<SmartStream.ReadLineAsyncOP> e){
try{
ReadMultiLineResponseLineCompleted(readLineOP);
// Read response lines while we get terminator(.).
while(this.State == AsyncOP_State.Active && m_pPop3Client.TcpStream.ReadLine(readLineOP,true)){
ReadMultiLineResponseLineCompleted(readLineOP);
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
};
// Read response lines while we get terminator(.).
while(this.State == AsyncOP_State.Active && m_pPop3Client.TcpStream.ReadLine(readLineOP,true)){
ReadMultiLineResponseLineCompleted(readLineOP);
}
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server PASS response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void PassReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
// Start filling messages info.
POP3_Client.FillMessagesAsyncOP fillOP = new FillMessagesAsyncOP();
fillOP.CompletedAsync += delegate(object sender,EventArgs<FillMessagesAsyncOP> e){
FillMessagesCompleted(fillOP);
};
if(!m_pPop3Client.FillMessagesAsync(fillOP)){
FillMessagesCompleted(fillOP);
}
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}
/// <summary>
/// Is called when POP3 server USER response reading has completed.
/// </summary>
/// <param name="op">Asynchronous operation.</param>
private void UserReadResponseCompleted(SmartStream.ReadLineAsyncOP op)
{
try{
// Operation failed.
if(op.Error != null){
m_pException = op.Error;
m_pPop3Client.LogAddException("Exception: " + op.Error.Message,op.Error);
SetState(AsyncOP_State.Completed);
}
// Operation succeeded.
else{
// Log
m_pPop3Client.LogAddRead(op.BytesInBuffer,op.LineUtf8);
// Server returned success response.
if(string.Equals(op.LineUtf8.Split(new char[]{' '},2)[0],"+OK",StringComparison.InvariantCultureIgnoreCase)){
byte[] buffer = Encoding.UTF8.GetBytes("PASS " + m_Password + "\r\n");
// Log
m_pPop3Client.LogAddWrite(buffer.Length,"PASS <***REMOVED***>");
// Start command sending.
m_pPop3Client.TcpStream.BeginWrite(buffer,0,buffer.Length,this.PassCommandSendingCompleted,null);
}
// Server returned error response.
else{
m_pException = new POP3_ClientException(op.LineUtf8);
SetState(AsyncOP_State.Completed);
}
}
}
catch(Exception x){
m_pException = x;
m_pPop3Client.LogAddException("Exception: " + x.Message,x);
SetState(AsyncOP_State.Completed);
}
op.Dispose();
}