• Skip to content
  • Skip to link menu
KDE 4.8 API Reference
  • KDE API Reference
  • KDE-PIM Libraries
  • KDE Home
  • Contact Us
 

KIMAP Library

sessionthread.cpp
00001 /*
00002     Copyright (c) 2009 Kevin Ottens <ervin@kde.org>
00003 
00004     This library is free software; you can redistribute it and/or modify it
00005     under the terms of the GNU Library General Public License as published by
00006     the Free Software Foundation; either version 2 of the License, or (at your
00007     option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful, but WITHOUT
00010     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00011     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00012     License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to the
00016     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017     02110-1301, USA.
00018 */
00019 
00020 #include "sessionthread_p.h"
00021 
00022 #include <QtCore/QDebug>
00023 #include <QtCore/QTimer>
00024 
00025 #include <KDE/KDebug>
00026 
00027 #include "imapstreamparser.h"
00028 #include "message_p.h"
00029 #include "session.h"
00030 
00031 using namespace KIMAP;
00032 
00033 Q_DECLARE_METATYPE(KTcpSocket::Error)
00034 Q_DECLARE_METATYPE(KSslErrorUiData)
00035 static const int _kimap_socketErrorTypeId = qRegisterMetaType<KTcpSocket::Error>();
00036 static const int _kimap_sslErrorUiData = qRegisterMetaType<KSslErrorUiData>();
00037 
00038 SessionThread::SessionThread( const QString &hostName, quint16 port, Session *parent )
00039   : QThread(), m_hostName(hostName), m_port(port),
00040     m_session(parent), m_socket(0), m_stream(0), m_encryptedMode(false)
00041 {
00042   // Yeah, sounds weird, but QThread object is linked to the parent
00043   // thread not to itself, and I'm too lazy to introduce yet another
00044   // internal QObject
00045   moveToThread(this);
00046 }
00047 
00048 SessionThread::~SessionThread()
00049 {
00050   // don't call quit() directly, this will deadlock in wait() if exec() hasn't run yet
00051   QMetaObject::invokeMethod( this, "quit" );
00052   if ( !wait( 10 * 1000 ) ) {
00053     kWarning() << "Session thread refuses to die, killing harder...";
00054     terminate();
00055     // Make sure to wait until it's done, otherwise it can crash when the pthread callback is called
00056     wait();
00057   }
00058 }
00059 
00060 void SessionThread::sendData( const QByteArray &payload )
00061 {
00062   QMutexLocker locker(&m_mutex);
00063 
00064   m_dataQueue.enqueue( payload );
00065   QTimer::singleShot( 0, this, SLOT(writeDataQueue()) );
00066 }
00067 
00068 void SessionThread::writeDataQueue()
00069 {
00070   QMutexLocker locker(&m_mutex);
00071 
00072   while ( !m_dataQueue.isEmpty() ) {
00073     m_socket->write( m_dataQueue.dequeue() );
00074   }
00075 }
00076 
00077 void SessionThread::readMessage()
00078 {
00079   QMutexLocker locker(&m_mutex);
00080 
00081   if ( m_stream->availableDataSize()==0 ) {
00082     return;
00083   }
00084 
00085   Message message;
00086   QList<Message::Part> *payload = &message.content;
00087 
00088   try {
00089     while ( !m_stream->atCommandEnd() ) {
00090       if ( m_stream->hasString() ) {
00091         QByteArray string = m_stream->readString();
00092         if ( string == "NIL" ) {
00093           *payload << Message::Part( QList<QByteArray>() );
00094         } else {
00095           *payload << Message::Part(string);
00096         }
00097       } else if ( m_stream->hasList() ) {
00098         *payload << Message::Part(m_stream->readParenthesizedList());
00099       } else if ( m_stream->hasResponseCode() ) {
00100         payload = &message.responseCode;
00101       } else if ( m_stream->atResponseCodeEnd() ) {
00102         payload = &message.content;
00103       } else if ( m_stream->hasLiteral() ) {
00104         QByteArray literal;
00105         while ( !m_stream->atLiteralEnd() ) {
00106           literal+= m_stream->readLiteralPart();
00107         }
00108         *payload << Message::Part(literal);
00109       } else {
00110         // Oops! Something really bad happened
00111         throw ImapParserException( "Inconsistent state, probably due to some packet loss" );
00112       }
00113     }
00114 
00115     emit responseReceived(message);
00116 
00117   } catch (KIMAP::ImapParserException e) {
00118     qWarning() << "The stream parser raised an exception:" << e.what();
00119   }
00120 
00121   if ( m_stream->availableDataSize()>1 ) {
00122     QTimer::singleShot( 0, this, SLOT(readMessage()) );
00123   }
00124 
00125 }
00126 
00127 void SessionThread::closeSocket()
00128 {
00129   QTimer::singleShot( 0, this, SLOT(doCloseSocket()) );
00130 }
00131 
00132 void SessionThread::doCloseSocket()
00133 {
00134   m_encryptedMode = false;
00135   m_socket->close();
00136 }
00137 
00138 void SessionThread::reconnect()
00139 {
00140   QMutexLocker locker(&m_mutex);
00141 
00142   if ( m_socket->state() != SessionSocket::ConnectedState &&
00143        m_socket->state() != SessionSocket::ConnectingState ) {
00144     if (m_encryptedMode) {
00145       m_socket->connectToHostEncrypted(m_hostName, m_port);
00146     } else {
00147       m_socket->connectToHost(m_hostName, m_port);
00148     }
00149   }
00150 }
00151 
00152 void SessionThread::run()
00153 {
00154   m_socket = new SessionSocket;
00155   m_stream = new ImapStreamParser( m_socket );
00156   connect( m_socket, SIGNAL(readyRead()),
00157            this, SLOT(readMessage()), Qt::QueuedConnection );
00158 
00159   connect( m_socket, SIGNAL(disconnected()),
00160            m_session, SLOT(socketDisconnected()) );
00161   connect( m_socket, SIGNAL(connected()),
00162            m_session, SLOT(socketConnected()) );
00163   connect( m_socket, SIGNAL(error(KTcpSocket::Error)),
00164            m_session, SLOT(socketError()) );
00165   connect( m_socket, SIGNAL(bytesWritten(qint64)),
00166            m_session, SLOT(socketActivity()) );
00167   if ( m_socket->metaObject()->indexOfSignal("encryptedBytesWritten(qint64)" ) > -1 ) {
00168       connect( m_socket, SIGNAL(encryptedBytesWritten(qint64)), // needs kdelibs > 4.8
00169                m_session, SLOT(socketActivity()) );
00170   }
00171   connect( m_socket, SIGNAL(readyRead()),
00172            m_session, SLOT(socketActivity()) );
00173 
00174   connect( this, SIGNAL(responseReceived(KIMAP::Message)),
00175            m_session, SLOT(responseReceived(KIMAP::Message)) );
00176 
00177   QTimer::singleShot( 0, this, SLOT(reconnect()) );
00178   exec();
00179 
00180   delete m_stream;
00181   delete m_socket;
00182 }
00183 
00184 void SessionThread::startSsl(const KTcpSocket::SslVersion &version)
00185 {
00186   QMutexLocker locker(&m_mutex);
00187 
00188   m_socket->setAdvertisedSslVersion(version);
00189   m_socket->ignoreSslErrors();
00190   connect(m_socket, SIGNAL(encrypted()), this, SLOT(sslConnected()));
00191   m_socket->startClientEncryption();
00192 }
00193 
00194 void SessionThread::sslConnected()
00195 {
00196   QMutexLocker locker(&m_mutex);
00197   KSslCipher cipher = m_socket->sessionCipher();
00198 
00199   if ( m_socket->sslErrors().count() > 0 || m_socket->encryptionMode() != KTcpSocket::SslClientMode
00200       || cipher.isNull() || cipher.usedBits() == 0) {
00201       kDebug() << "Initial SSL handshake failed. cipher.isNull() is" << cipher.isNull()
00202                     << ", cipher.usedBits() is" << cipher.usedBits()
00203                     << ", the socket says:" <<  m_socket->errorString()
00204                     << "and the list of SSL errors contains"
00205                     << m_socket->sslErrors().count() << "items.";
00206      KSslErrorUiData errorData(m_socket);
00207      emit sslError(errorData);
00208   } else {
00209     kDebug() << "TLS negotiation done.";
00210     m_encryptedMode = true;
00211     emit encryptionNegotiationResult(true, m_socket->negotiatedSslVersion());
00212   }
00213 }
00214 
00215 void SessionThread::sslErrorHandlerResponse(bool response)
00216 {
00217   QMutexLocker locker(&m_mutex);
00218   if (response) {
00219     m_encryptedMode = true;
00220     emit encryptionNegotiationResult(true, m_socket->negotiatedSslVersion());
00221   } else {
00222      m_encryptedMode = false;
00223      //reconnect in unencrypted mode, so new commands can be issued
00224      m_socket->disconnectFromHost();
00225      m_socket->waitForDisconnected();
00226      m_socket->connectToHost(m_hostName, m_port);
00227      emit encryptionNegotiationResult(false, KTcpSocket::UnknownSslVersion);
00228   }
00229 }
00230 
00231 #include "sessionthread_p.moc"
00232 

KIMAP Library

Skip menu "KIMAP Library"
  • Main Page
  • Namespace List
  • Namespace Members
  • Alphabetical List
  • Class List
  • Class Hierarchy
  • Class Members
  • File List
  • Related Pages

KDE-PIM Libraries

Skip menu "KDE-PIM Libraries"
  • akonadi
  •   contact
  •   kmime
  • kabc
  • kalarmcal
  • kblog
  • kcal
  • kcalcore
  • kcalutils
  • kholidays
  • kimap
  • kioslave
  •   imap4
  •   mbox
  •   nntp
  • kldap
  • kmbox
  • kmime
  • kontactinterface
  • kpimidentities
  • kpimtextedit
  •   richtextbuilders
  • kpimutils
  • kresources
  • ktnef
  • kxmlrpcclient
  • mailtransport
  • microblog
  • qgpgme
  • syndication
  •   atom
  •   rdf
  •   rss2
Generated for KDE-PIM Libraries by doxygen 1.7.6.1
This website is maintained by Adriaan de Groot and Allen Winter.
KDE® and the K Desktop Environment® logo are registered trademarks of KDE e.V. | Legal