void
SMTPClientConnection::ProtocolEHLOSent_(int code, const AnsiString &request)
{
if (!IsPositiveCompletion(code))
{
bool ehlo_required = GetConnectionSecurity() == CSSTARTTLSRequired ||
use_smtpauth_;
if (ehlo_required)
{
// hMailServer is configured to require EHLO, but the remote server does not support it.
UpdateAllRecipientsWithError_(500, "Server does not support EHLO command.", false);
SendQUIT_();
}
else
{
// Server does not support EHLO, but we do not require it. Switch to HELO.
String computer_name = Utilities::ComputerName();
EnqueueWrite_("HELO " + computer_name);
SetState_(HELOSENT);
}
return;
}
if (GetConnectionSecurity() == CSSTARTTLSRequired ||
GetConnectionSecurity() == CSSTARTTLSOptional)
{
if (!IsSSLConnection())
{
if (request.Contains("STARTTLS"))
{
EnqueueWrite_("STARTTLS");
SetState_(STARTTLSSENT);
return;
}
else
{
// Remote server does not support STARTTLS
if (GetConnectionSecurity() == CSSTARTTLSRequired)
{
UpdateAllRecipientsWithError_(500, "Server does not support STARTTLS.", false);
SendQUIT_();
return;
}
}
}
}
if (use_smtpauth_)
{
// Ask the server to initiate login process.
EnqueueWrite_("AUTH LOGIN");
SetState_(AUTHLOGINSENT);
}
else
{
ProtocolSendMailFrom_();
}
}
void
SMTPClientConnection::ProtocolSTARTTLSSent_(int code)
{
if (IsPositiveCompletion(code))
{
EnqueueHandshake();
}
else
{
HandleHandshakeFailed_();
}
}
bool
SMTPClientConnection::_ProtocolPassswordCheck(int iCode, const String &sServerLine)
{
if (!IsPositiveCompletion(iCode))
{
// Authentication failed with an permanent error.
String sErrorMessage = "Authentication error. Server response: " + sServerLine;
_UpdateAllRecipientsWithError(iCode, sErrorMessage, false);
_SendQUIT();
return false;
}
// The server accepted our authentication.
_SetState(MAILFROM);
return true;
}
void
SMTPClientConnection::ProtocolRcptToSent_(int code, const AnsiString &request)
{
if (cur_recipient_ < recipients_.size())
{
if (IsPositiveCompletion(code))
{
actual_recipients_.insert(recipients_[cur_recipient_]);
}
else
{
UpdateRecipientWithError_(code, request, recipients_[cur_recipient_], false);
}
}
std::shared_ptr<MessageRecipient> pRecipient = GetNextRecipient_();
if (pRecipient)
{
// Send next recipient.
EnqueueWrite_("RCPT TO:<" + pRecipient->GetAddress() + ">");
current_state_ = RCPTTOSENT;
}
else
{
if (actual_recipients_.size() == 0)
{
SendQUIT_();
}
else
{
EnqueueWrite_("DATA");
current_state_ = DATACOMMANDSENT;
}
}
}
void
SMTPClientConnection::InternalParseData(const AnsiString &Request)
{
LOG_DEBUG("SMTPClientConnection::_ParseASCII()");
String sData = "RECEIVED: " + Request;
LOG_SMTP_CLIENT(GetSessionID(), GetIPAddress().ToString(), sData);
// Below 3 lines is fix of the problem that occurs when the remote server answers
// with 2 line in his welcome message.
String sMinus = "-";
if ((Request.GetLength() > 3) && (Request.GetAt(3) == sMinus.GetAt(0)))
{
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 1");
return;
}
int lFirstSpace = Request.Find(" ");
AnsiString sFirstWordTemp;
if (lFirstSpace < 0)
sFirstWordTemp = Request;
else
sFirstWordTemp = Request.Mid(0, lFirstSpace);
sFirstWordTemp.MakeUpper();
int iCode = atoi(sFirstWordTemp);
// We should not update all recipient's if we've just sent a
// RCPT TO. We should only update the specific one we've just
// sent to.
//
// Also, we should not update state if we've just sent QUIT to
// the server. At the time we send QUIT, the message has already
// been either accepted for delivery and rejected. Any error after
// this isn't relvat.
if (m_CurrentState != RCPTTOSENT && m_CurrentState != QUITSENT)
{
if (IsPermanentNegative(iCode))
{
_UpdateAllRecipientsWithError(iCode, Request, false);
_SendQUIT();
return;
}
else if (IsTransientNegative(iCode))
{
_UpdateAllRecipientsWithError(iCode, Request, false);
_SendQUIT();
return;
}
}
switch (m_CurrentState)
{
case SENDUSERNAME:
_ProtocolSendUsername();
break;
case SENDPASSWORD:
_ProtocolSendPassword();
break;
case PASSWORDCHECK:
if (!_ProtocolPassswordCheck(iCode, Request))
{
// Authentication failed. We have just sent
// a quit command.
return;
}
break;
}
if (m_CurrentState == HELO)
{
if (iCode == 220)
{
String sComputerName = Utilities::ComputerName();
if (m_bUseSMTPAuth)
{
_SendData("EHLO " + sComputerName);
_SetState(EHLOSENT);
}
else
{
_SendData("HELO " + sComputerName);
_SetState(HELOSENT);
}
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 2");
return ;
}
else
{
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 3");
_UpdateAllRecipientsWithError(iCode, Request, false);
_SendQUIT();
return;
}
}
if (m_CurrentState == EHLOSENT)
{
// Ask the server to initiate login process.
_SendData("AUTH LOGIN");
_SetState(SENDUSERNAME);
return ;
}
if (m_CurrentState == HELOSENT)
{
if (IsPositiveCompletion(iCode))
{
// --- Server accepted HELO. Go to HEADER/MAILFROM state.
_SetState(MAILFROM);
}
else
{
_UpdateAllRecipientsWithError(iCode, Request, false);
}
}
if (m_CurrentState == MAILFROM)
{
String sFrom = m_pDeliveryMessage->GetFromAddress();
String sData = "MAIL FROM:<" + sFrom + ">";
_SendData(sData);
m_CurrentState = MAILFROMSENT;
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 4");
return;
}
if (m_CurrentState == MAILFROMSENT)
{
if (IsPositiveCompletion(iCode))
{
// --- Server accepted mail from. Go to header/rcpt to state.
m_CurrentState = RCPTTO;
}
else
{
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 5");
_UpdateAllRecipientsWithError(iCode, Request, false);
}
}
if (m_CurrentState == RCPTTO)
{
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 6");
shared_ptr<MessageRecipient> pRecipient = _GetNextRecipient();
if (!pRecipient)
{
_SendQUIT();
return;
}
String sRecipient = pRecipient->GetAddress();
String sData = "RCPT TO:<" + sRecipient + ">";
_SendData(sData);
m_CurrentState = RCPTTOSENT;
return;
}
if (m_CurrentState == RCPTTOSENT)
{
if (m_iCurRecipient < m_vecRecipients.size())
{
if (IsPositiveCompletion(iCode))
{
_actualRecipients.insert(m_vecRecipients[m_iCurRecipient]);
}
else
{
_UpdateRecipientWithError(iCode, Request, m_vecRecipients[m_iCurRecipient], false);
}
}
shared_ptr<MessageRecipient> pRecipient = _GetNextRecipient();
if (pRecipient)
{
// Send next recipient.
_SendData("RCPT TO:<" + pRecipient->GetAddress() + ">");
m_CurrentState = RCPTTOSENT;
}
else
{
if (_actualRecipients.size() == 0)
{
_SendQUIT();
return;
}
m_CurrentState = DATAQUESTION;
}
}
if (m_CurrentState == DATAQUESTION)
{
_SendData("DATA");
m_CurrentState = DATA;
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 7");
return;
}
if (m_CurrentState == DATA)
{
if (IsPositiveIntermediate(iCode))
{
// Send the data!
const String fileName = PersistentMessage::GetFileName(m_pDeliveryMessage);
LOG_DEBUG("SMTPClientConnection::~_BEFORE SendFile");
_StartSendFile(fileName);
LOG_DEBUG("SMTPClientConnection::~_AFTER SendFile");
return;
}
}
if (m_CurrentState == DATASENT)
{
LOG_DEBUG("SMTPClientConnection::~_BEFORE SendQUIT");
_SendQUIT();
LOG_DEBUG("SMTPClientConnection::~_AFTER SendQUIT");
if (IsPositiveCompletion(iCode))
{
_UpdateSuccessfulRecipients();
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 9");
return;
}
else
{
_UpdateAllRecipientsWithError(iCode, Request, false);
LOG_DEBUG("SMTPClientConnection::~_ParseASCII() - 10");
}
return;
}
if (m_CurrentState == QUITSENT)
{
// We just received a reply on our QUIT. Time to disconnect.
m_bPendingDisconnect = true;
PostDisconnect();
}
}
bool
SMTPClientConnection::InternalParseData(const AnsiString &Request)
{
LogReceivedResponse_(Request);
int lFirstSpace = Request.Find(" ");
AnsiString sFirstWordTemp;
if (lFirstSpace < 0)
sFirstWordTemp = Request;
else
sFirstWordTemp = Request.Mid(0, lFirstSpace);
sFirstWordTemp.MakeUpper();
int iCode = atoi(sFirstWordTemp);
bool ifFailureFailAllRecipientsAndQuit =
current_state_ == HELO ||
current_state_ == HELOSENT ||
current_state_ == AUTHLOGINSENT ||
current_state_ == USERNAMESENT ||
current_state_ == PASSWORDSENT ||
current_state_ == MAILFROMSENT ||
current_state_ == DATACOMMANDSENT ||
current_state_ == DATASENT ||
current_state_ == PASSWORDSENT;
if (ifFailureFailAllRecipientsAndQuit)
{
if (!IsPositiveCompletion(iCode))
{
UpdateAllRecipientsWithError_(iCode, Request, false);
SendQUIT_();
return true;
}
}
switch (current_state_)
{
case HELO:
ProtocolStateHELOEHLO_(Request);
return true;
case HELOSENT:
ProtocolHELOSent_(Request);
return true;
case EHLOSENT:
ProtocolEHLOSent_(iCode, Request);
return true;
case STARTTLSSENT:
ProtocolSTARTTLSSent_(iCode);
return false;
case AUTHLOGINSENT:
ProtocolSendUsername_();
return true;
case USERNAMESENT:
ProtocolSendPassword_();
return true;
case PASSWORDSENT:
ProtocolSendMailFrom_();
return true;
case MAILFROMSENT:
ProtocolMailFromSent_();
return true;
case DATACOMMANDSENT:
ProtocolData_();
return false;
case DATASENT:
SendQUIT_();
UpdateSuccessfulRecipients_();
return true;
case RCPTTOSENT:
ProtocolRcptToSent_(iCode, Request);
return true;
case QUITSENT:
// We just received a reply on our QUIT. Time to disconnect.
EnqueueDisconnect();
return false;
}
return true;
}