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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/mail-example.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/mail-example.html')
| -rw-r--r-- | doc/html/mail-example.html | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/doc/html/mail-example.html b/doc/html/mail-example.html new file mode 100644 index 0000000..375b3ad --- /dev/null +++ b/doc/html/mail-example.html @@ -0,0 +1,243 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/network/mail/mail.doc:5 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>A simple mail client</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<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> + + +<p> +<p> This example shows how to use the <a href="qsocket.html">QSocket</a> class. The client can only be +used to send mails. The interesting part is the implementation of the +SMTP protocol. +<p> <hr> +<p> Header file (smtp.h): +<p> <pre>/**************************************************************************** +** $Id: qt/smtp.h 3.3.8 edited Jan 11 14:37 $ +** +** Copyright (C) 1992-2007 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. +** +*****************************************************************************/ + +#ifndef SMTP_H +#define SMTP_H + +#include <<a href="qobject-h.html">qobject.h</a>> +#include <<a href="qstring-h.html">qstring.h</a>> + +class QSocket; +class QTextStream; +class QDns; + +class Smtp : public <a href="qobject.html">QObject</a> +{ + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> + +public: + Smtp( const <a href="qstring.html">QString</a> &from, const <a href="qstring.html">QString</a> &to, + const <a href="qstring.html">QString</a> &subject, const <a href="qstring.html">QString</a> &body ); + ~Smtp(); + +signals: + void status( const <a href="qstring.html">QString</a> & ); + +private slots: + void dnsLookupHelper(); + void readyRead(); + void connected(); + +private: + enum State { + Init, + Mail, + Rcpt, + Data, + Body, + Quit, + Close + }; + + <a href="qstring.html">QString</a> message; + <a href="qstring.html">QString</a> from; + <a href="qstring.html">QString</a> rcpt; + <a href="qsocket.html">QSocket</a> *socket; + <a href="qtextstream.html">QTextStream</a> * t; + int state; + <a href="qstring.html">QString</a> response; + <a href="qdns.html">QDns</a> * mxLookup; +}; + +#endif +</pre> + +<p> <hr> +<p> Implementation (smtp.cpp): +<p> <pre>/**************************************************************************** +** $Id: qt/smtp.cpp 3.3.8 edited Jan 11 14:37 $ +** +** Copyright (C) 1992-2007 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 <<a href="qtextstream-h.html">qtextstream.h</a>> +#include <<a href="qsocket-h.html">qsocket.h</a>> +#include <<a href="qdns-h.html">qdns.h</a>> +#include <<a href="qtimer-h.html">qtimer.h</a>> +#include <<a href="qapplication-h.html">qapplication.h</a>> +#include <<a href="qmessagebox-h.html">qmessagebox.h</a>> +#include <<a href="qregexp-h.html">qregexp.h</a>> + + +<a name="f297"></a>Smtp::Smtp( const <a href="qstring.html">QString</a> &from, const <a href="qstring.html">QString</a> &to, + const <a href="qstring.html">QString</a> &subject, + const <a href="qstring.html">QString</a> &body ) +{ + socket = new <a href="qsocket.html">QSocket</a>( this ); +<a name="x714"></a> <a href="qobject.html#connect">connect</a> ( socket, SIGNAL( <a href="qsocket.html#readyRead">readyRead</a>() ), + this, SLOT( readyRead() ) ); +<a name="x711"></a> <a href="qobject.html#connect">connect</a> ( socket, SIGNAL( <a href="qsocket.html#connected">connected</a>() ), + this, SLOT( connected() ) ); + +<a name="x717"></a><a name="x715"></a> mxLookup = new <a href="qdns.html">QDns</a>( to.<a href="qstring.html#mid">mid</a>( to.<a href="qstring.html#find">find</a>( '@' )+1 ), QDns::Mx ); +<a name="x707"></a> <a href="qobject.html#connect">connect</a>( mxLookup, SIGNAL(<a href="qdns.html#resultsReady">resultsReady</a>()), + this, SLOT(dnsLookupHelper()) ); + +<a name="x716"></a> message = QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "From: " ) + from + + QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\nTo: " ) + to + + QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\nSubject: " ) + subject + + QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\n\n" ) + body + "\n"; + message.replace( QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\n" ), + QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\r\n" ) ); + message.replace( QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\r\n.\r\n" ), + QString::<a href="qstring.html#fromLatin1">fromLatin1</a>( "\r\n..\r\n" ) ); + + this->from = from; + rcpt = to; + + state = Init; +} + + +Smtp::~Smtp() +{ + delete t; + delete socket; +} + + +void <a name="f298"></a>Smtp::dnsLookupHelper() +{ +<a name="x706"></a> <a href="qvaluelist.html">QValueList</a><QDns::MailServer> s = mxLookup-><a href="qdns.html#mailServers">mailServers</a>(); +<a name="x720"></a> if ( s.<a href="qvaluelist.html#isEmpty">isEmpty</a>() ) { +<a name="x705"></a> if ( !mxLookup-><a href="qdns.html#isWorking">isWorking</a>() ) + emit status( <a href="qobject.html#tr">tr</a>( "Error in MX record lookup" ) ); + return; + } + +<a name="x719"></a> emit status( <a href="qobject.html#tr">tr</a>( "Connecting to %1" ).arg( s.<a href="qvaluelist.html#first">first</a>().name ) ); + +<a name="x710"></a> socket-><a href="qsocket.html#connectToHost">connectToHost</a>( s.<a href="qvaluelist.html#first">first</a>().name, 25 ); + t = new <a href="qtextstream.html">QTextStream</a>( socket ); +} + + +void <a name="f299"></a>Smtp::connected() +{ +<a name="x712"></a> emit status( <a href="qobject.html#tr">tr</a>( "Connected to %1" ).arg( socket-><a href="qsocket.html#peerName">peerName</a>() ) ); +} + +void <a name="f300"></a>Smtp::readyRead() +{ + // SMTP is line-oriented +<a name="x709"></a> if ( !socket-><a href="qsocket.html#canReadLine">canReadLine</a>() ) + return; + + <a href="qstring.html">QString</a> responseLine; + do { +<a name="x713"></a> responseLine = socket-><a href="qsocket.html#readLine">readLine</a>(); + response += responseLine; + } while( socket-><a href="qsocket.html#canReadLine">canReadLine</a>() && responseLine[3] != ' ' ); +<a name="x718"></a> responseLine.<a href="qstring.html#truncate">truncate</a>( 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( <a href="qobject.html#tr">tr</a>( "Message sent" ) ); + } else if ( state == Close ) { + <a href="qobject.html#deleteLater">deleteLater</a>(); + return; + } else { + // something broke. +<a name="x708"></a><a name="x704"></a> QMessageBox::<a href="qmessagebox.html#warning">warning</a>( qApp-><a href="qapplication.html#activeWindow">activeWindow</a>(), + <a href="qobject.html#tr">tr</a>( "Qt Mail Example" ), + <a href="qobject.html#tr">tr</a>( "Unexpected reply from SMTP server:\n\n" ) + + response ); + state = Close; + } + + response = ""; +} +</pre> + +<p>See also <a href="network-examples.html">Network Examples</a>. + +<!-- eof --> +<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>Qt 3.3.8</div> +</table></div></address></body> +</html> |