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
  47 namespace Net
  48 {
  49     class Smtp : public QObject
  50     {
  51         Q_OBJECT
  52         Q_DISABLE_COPY_MOVE(Smtp)
  53
  54     public:
  55         Smtp(QObject *parent = nullptr);
  56         ~Smtp();
  57
  58         void sendMail(const QString &from, const QString &to, const QString &subject, const QString &body);
  59
  60     private slots:
  61         void readyRead();
  62         void error(QAbstractSocket::SocketError socketError);
  63
  64     private:
  65         enum States
  66         {
  67             Rcpt,
  68             EhloSent,
  69             HeloSent,
  70             EhloDone,
  71             EhloGreetReceived,
  72             AuthRequestSent,
  73             AuthSent,
  74             AuthUsernameSent,
  75             Authenticated,
  76             StartTLSSent,
  77             Data,
  78             Init,
  79             Body,
  80             Quit,
  81             Close
  82         };
  83
  84         enum AuthType
  85         {
  86             AuthPlain,
  87             AuthLogin,
  88             AuthCramMD5
  89         };
  90
  91         QByteArray encodeMimeHeader(const QString &key, const QString &value, const QByteArray &prefix = {});
  92         void ehlo();
  93         void helo();
  94         void parseEhloResponse(const QByteArray &code, bool continued, const QString &line);
  95         void authenticate();
  96         void startTLS();
  97         void authCramMD5(const QByteArray &challenge = {});
  98         void authPlain();
  99         void authLogin();
 100         void logError(const QString &msg);
 101         QString getCurrentDateTime() const;
 102
 103         QByteArray m_message;
 104 #ifndef QT_NO_OPENSSL
 105         QSslSocket *m_socket = nullptr;
 106 #else
 107         QTcpSocket *m_socket = nullptr;
 108 #endif
 109         QString m_from;
 110         QString m_rcpt;
 111         QString m_response;
 112         int m_state = Init;
 113         QHash<QString, QString> m_extensions;
 114         QByteArray m_buffer;
 115         bool m_useSsl = false;
 116         AuthType m_authType = AuthPlain;
 117         QString m_username;
 118         QString m_password;
 119     };
 120 }