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244 lines
9.6 KiB
244 lines
9.6 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/network/mail/mail.doc:5 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>A simple mail client</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Annotated</font></a>
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<font color="#004faf">Grouped Classes</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A simple mail client</h1>
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<p>
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<p> This example shows how to use the <a href="ntqsocket.html">TQSocket</a> class. The client can only be
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used to send mails. The interesting part is the implementation of the
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SMTP protocol.
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<p> <hr>
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<p> Header file (smtp.h):
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<p> <pre>/****************************************************************************
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** $Id: qt/smtp.h 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef SMTP_H
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#define SMTP_H
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#include <<a href="qobject-h.html">ntqobject.h</a>>
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#include <<a href="qstring-h.html">ntqstring.h</a>>
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class TQSocket;
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class TQTextStream;
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class TQDns;
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class Smtp : public <a href="ntqobject.html">TQObject</a>
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{
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<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
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public:
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Smtp( const <a href="ntqstring.html">TQString</a> &from, const <a href="ntqstring.html">TQString</a> &to,
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const <a href="ntqstring.html">TQString</a> &subject, const <a href="ntqstring.html">TQString</a> &body );
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~Smtp();
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signals:
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void status( const <a href="ntqstring.html">TQString</a> & );
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private slots:
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void dnsLookupHelper();
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void readyRead();
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void connected();
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private:
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enum State {
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Init,
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Mail,
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Rcpt,
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Data,
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Body,
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Quit,
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Close
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};
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<a href="ntqstring.html">TQString</a> message;
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<a href="ntqstring.html">TQString</a> from;
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<a href="ntqstring.html">TQString</a> rcpt;
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<a href="ntqsocket.html">TQSocket</a> *socket;
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<a href="ntqtextstream.html">TQTextStream</a> * t;
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int state;
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<a href="ntqstring.html">TQString</a> response;
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<a href="ntqdns.html">TQDns</a> * mxLookup;
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation (smtp.cpp):
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<p> <pre>/****************************************************************************
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** $Id: qt/smtp.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "smtp.h"
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#include <<a href="qtextstream-h.html">ntqtextstream.h</a>>
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#include <<a href="qsocket-h.html">ntqsocket.h</a>>
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#include <<a href="qdns-h.html">ntqdns.h</a>>
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#include <<a href="qtimer-h.html">ntqtimer.h</a>>
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#include <<a href="qapplication-h.html">ntqapplication.h</a>>
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#include <<a href="qmessagebox-h.html">ntqmessagebox.h</a>>
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#include <<a href="qregexp-h.html">ntqregexp.h</a>>
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<a name="f297"></a>Smtp::Smtp( const <a href="ntqstring.html">TQString</a> &from, const <a href="ntqstring.html">TQString</a> &to,
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const <a href="ntqstring.html">TQString</a> &subject,
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const <a href="ntqstring.html">TQString</a> &body )
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{
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socket = new <a href="ntqsocket.html">TQSocket</a>( this );
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<a name="x714"></a> <a href="ntqobject.html#connect">connect</a> ( socket, SIGNAL( <a href="ntqsocket.html#readyRead">readyRead</a>() ),
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this, SLOT( readyRead() ) );
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<a name="x711"></a> <a href="ntqobject.html#connect">connect</a> ( socket, SIGNAL( <a href="ntqsocket.html#connected">connected</a>() ),
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this, SLOT( connected() ) );
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<a name="x717"></a><a name="x715"></a> mxLookup = new <a href="ntqdns.html">TQDns</a>( to.<a href="ntqstring.html#mid">mid</a>( to.<a href="ntqstring.html#find">find</a>( '@' )+1 ), TQDns::Mx );
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<a name="x707"></a> <a href="ntqobject.html#connect">connect</a>( mxLookup, SIGNAL(<a href="ntqdns.html#resultsReady">resultsReady</a>()),
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this, SLOT(dnsLookupHelper()) );
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<a name="x716"></a> message = TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "From: " ) + from +
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TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\nTo: " ) + to +
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TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\nSubject: " ) + subject +
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TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\n\n" ) + body + "\n";
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message.replace( TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\n" ),
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TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\r\n" ) );
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message.replace( TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\r\n.\r\n" ),
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TQString::<a href="ntqstring.html#fromLatin1">fromLatin1</a>( "\r\n..\r\n" ) );
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this->from = from;
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rcpt = to;
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state = Init;
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}
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Smtp::~Smtp()
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{
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delete t;
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delete socket;
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}
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void <a name="f298"></a>Smtp::dnsLookupHelper()
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{
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<a name="x706"></a> <a href="ntqvaluelist.html">TQValueList</a><TQDns::MailServer> s = mxLookup-><a href="ntqdns.html#mailServers">mailServers</a>();
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<a name="x720"></a> if ( s.<a href="ntqvaluelist.html#isEmpty">isEmpty</a>() ) {
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<a name="x705"></a> if ( !mxLookup-><a href="ntqdns.html#isWorking">isWorking</a>() )
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emit status( <a href="ntqobject.html#tr">tr</a>( "Error in MX record lookup" ) );
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return;
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}
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<a name="x719"></a> emit status( <a href="ntqobject.html#tr">tr</a>( "Connecting to %1" ).arg( s.<a href="ntqvaluelist.html#first">first</a>().name ) );
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<a name="x710"></a> socket-><a href="ntqsocket.html#connectToHost">connectToHost</a>( s.<a href="ntqvaluelist.html#first">first</a>().name, 25 );
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t = new <a href="ntqtextstream.html">TQTextStream</a>( socket );
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}
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void <a name="f299"></a>Smtp::connected()
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{
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<a name="x712"></a> emit status( <a href="ntqobject.html#tr">tr</a>( "Connected to %1" ).arg( socket-><a href="ntqsocket.html#peerName">peerName</a>() ) );
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}
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void <a name="f300"></a>Smtp::readyRead()
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{
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// SMTP is line-oriented
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<a name="x709"></a> if ( !socket-><a href="ntqsocket.html#canReadLine">canReadLine</a>() )
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return;
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<a href="ntqstring.html">TQString</a> responseLine;
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do {
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<a name="x713"></a> responseLine = socket-><a href="ntqsocket.html#readLine">readLine</a>();
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response += responseLine;
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} while( socket-><a href="ntqsocket.html#canReadLine">canReadLine</a>() && responseLine[3] != ' ' );
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<a name="x718"></a> responseLine.<a href="ntqstring.html#truncate">truncate</a>( 3 );
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if ( state == Init && responseLine[0] == '2' ) {
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// banner was okay, let's go on
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*t << "HELO there\r\n";
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state = Mail;
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} else if ( state == Mail && responseLine[0] == '2' ) {
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// HELO response was okay (well, it has to be)
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*t << "MAIL FROM: <" << from << ">\r\n";
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state = Rcpt;
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} else if ( state == Rcpt && responseLine[0] == '2' ) {
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*t << "RCPT TO: <" << rcpt << ">\r\n";
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state = Data;
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} else if ( state == Data && responseLine[0] == '2' ) {
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*t << "DATA\r\n";
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state = Body;
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} else if ( state == Body && responseLine[0] == '3' ) {
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*t << message << ".\r\n";
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state = Quit;
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} else if ( state == Quit && responseLine[0] == '2' ) {
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*t << "QUIT\r\n";
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// here, we just close.
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state = Close;
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emit status( <a href="ntqobject.html#tr">tr</a>( "Message sent" ) );
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} else if ( state == Close ) {
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<a href="ntqobject.html#deleteLater">deleteLater</a>();
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return;
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} else {
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// something broke.
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<a name="x708"></a><a name="x704"></a> TQMessageBox::<a href="ntqmessagebox.html#warning">warning</a>( tqApp-><a href="ntqapplication.html#activeWindow">activeWindow</a>(),
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<a href="ntqobject.html#tr">tr</a>( "TQt Mail Example" ),
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<a href="ntqobject.html#tr">tr</a>( "Unexpected reply from SMTP server:\n\n" ) +
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response );
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state = Close;
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}
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response = "";
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}
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</pre>
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<p>See also <a href="network-examples.html">Network Examples</a>.
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<!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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