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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "smtp.h"
#include <qtextstream.h>
#include <qsocket.h>
#include <qdns.h>
#include <qtimer.h>
#include <qapplication.h>
#include <qmessagebox.h>
#include <qregexp.h>
Smtp::Smtp( const QString &from, const QString &to,
const QString &subject,
const QString &body )
{
socket = new QSocket( this );
connect ( socket, SIGNAL( readyRead() ),
this, SLOT( readyRead() ) );
connect ( socket, SIGNAL( connected() ),
this, SLOT( connected() ) );
mxLookup = new QDns( to.mid( to.find( '@' )+1 ), QDns::Mx );
connect( mxLookup, SIGNAL(resultsReady()),
this, SLOT(dnsLookupHelper()) );
message = QString::fromLatin1( "From: " ) + from +
QString::fromLatin1( "\nTo: " ) + to +
QString::fromLatin1( "\nSubject: " ) + subject +
QString::fromLatin1( "\n\n" ) + body + "\n";
message.replace( QString::fromLatin1( "\n" ),
QString::fromLatin1( "\r\n" ) );
message.replace( QString::fromLatin1( "\r\n.\r\n" ),
QString::fromLatin1( "\r\n..\r\n" ) );
this->from = from;
rcpt = to;
state = Init;
}
Smtp::~Smtp()
{
delete t;
delete socket;
}
void Smtp::dnsLookupHelper()
{
QValueList<QDns::MailServer> s = mxLookup->mailServers();
if ( s.isEmpty() ) {
if ( !mxLookup->isWorking() )
emit status( tr( "Error in MX record lookup" ) );
return;
}
emit status( tr( "Connecting to %1" ).arg( s.first().name ) );
socket->connectToHost( s.first().name, 25 );
t = new QTextStream( socket );
}
void Smtp::connected()
{
emit status( tr( "Connected to %1" ).arg( socket->peerName() ) );
}
void Smtp::readyRead()
{
// SMTP is line-oriented
if ( !socket->canReadLine() )
return;
QString responseLine;
do {
responseLine = socket->readLine();
response += responseLine;
} while( socket->canReadLine() && responseLine[3] != ' ' );
responseLine.truncate( 3 );
if ( state == Init && responseLine[0] == '2' ) {
// banner was okay, let's go on
*t << "HELO there\r\n";
state = Mail;
} else if ( state == Mail && responseLine[0] == '2' ) {
// HELO response was okay (well, it has to be)
*t << "MAIL FROM: <" << from << ">\r\n";
state = Rcpt;
} else if ( state == Rcpt && responseLine[0] == '2' ) {
*t << "RCPT TO: <" << rcpt << ">\r\n";
state = Data;
} else if ( state == Data && responseLine[0] == '2' ) {
*t << "DATA\r\n";
state = Body;
} else if ( state == Body && responseLine[0] == '3' ) {
*t << message << ".\r\n";
state = Quit;
} else if ( state == Quit && responseLine[0] == '2' ) {
*t << "QUIT\r\n";
// here, we just close.
state = Close;
emit status( tr( "Message sent" ) );
} else if ( state == Close ) {
deleteLater();
return;
} else {
// something broke.
QMessageBox::warning( qApp->activeWindow(),
tr( "Qt Mail Example" ),
tr( "Unexpected reply from SMTP server:\n\n" ) +
response );
state = Close;
}
response = "";
}
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