src/base/net/smtp.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2011  Christophe Dumez <chris@qbittorrent.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 /*
  30  * This code is based on QxtSmtp from libqxt (http://libqxt.org)
  31  */
  32
  33 #pragma once
  34
  35 #include <QAbstractSocket>
  36 #include <QByteArray>
  37 #include <QHash>
  38 #include <QObject>
  39 #include <QString>
  40
  41 #ifndef QT_NO_OPENSSL
  42 class QSslSocket;
  43 #else
  44 class QTcpSocket;
  45 #endif
  46 class QTextCodec;
  47
  48 namespace Net
  49 {
  50     class Smtp : public QObject
  51     {
  52         Q_OBJECT
  53         Q_DISABLE_COPY_MOVE(Smtp)
  54
  55     public:
  56         Smtp(QObject *parent = nullptr);
  57         ~Smtp();
  58
  59         void sendMail(const QString &from, const QString &to, const QString &subject, const QString &body);
  60
  61     private slots:
  62         void readyRead();
  63         void error(QAbstractSocket::SocketError socketError);
  64
  65     private:
  66         enum States
  67         {
  68             Rcpt,
  69             EhloSent,
  70             HeloSent,
  71             EhloDone,
  72             EhloGreetReceived,
  73             AuthRequestSent,
  74             AuthSent,
  75             AuthUsernameSent,
  76             Authenticated,
  77             StartTLSSent,
  78             Data,
  79             Init,
  80             Body,
  81             Quit,
  82             Close
  83         };
  84
  85         enum AuthType
  86         {
  87             AuthPlain,
  88             AuthLogin,
  89             AuthCramMD5
  90         };
  91
  92         QByteArray encodeMimeHeader(const QString &key, const QString &value, const QByteArray &prefix = {});
  93         void ehlo();
  94         void helo();
  95         void parseEhloResponse(const QByteArray &code, bool continued, const QString &line);
  96         void authenticate();
  97         void startTLS();
  98         void authCramMD5(const QByteArray &challenge = {});
  99         void authPlain();
 100         void authLogin();
 101         void logError(const QString &msg);
 102         QString getCurrentDateTime() const;
 103
 104         QByteArray m_message;
 105 #ifndef QT_NO_OPENSSL
 106         QSslSocket *m_socket = nullptr;
 107 #else
 108         QTcpSocket *m_socket = nullptr;
 109 #endif
 110         QString m_from;
 111         QString m_rcpt;
 112         QString m_response;
 113         int m_state = Init;
 114         QHash<QString, QString> m_extensions;
 115         QByteArray m_buffer;
 116         bool m_useSsl = false;
 117         AuthType m_authType = AuthPlain;
 118         QString m_username;
 119         QString m_password;
 120     };
 121 }