Line data    Source code

       1             : /*
       2             :     qgpgmedecryptjob.cpp
       3             : 
       4             :     This file is part of qgpgme, the Qt API binding for gpgme
       5             :     Copyright (c) 2004,2008 Klarälvdalens Datakonsult AB
       6             :     Copyright (c) 2016 Intevation GmbH
       7             : 
       8             :     QGpgME is free software; you can redistribute it and/or
       9             :     modify it under the terms of the GNU General Public License as
      10             :     published by the Free Software Foundation; either version 2 of the
      11             :     License, or (at your option) any later version.
      12             : 
      13             :     QGpgME is distributed in the hope that it will be useful,
      14             :     but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :     General Public License for more details.
      17             : 
      18             :     You should have received a copy of the GNU General Public License along
      19             :     with this program; if not, write to the Free Software Foundation, Inc.,
      20             :     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
      21             : 
      22             :     In addition, as a special exception, the copyright holders give
      23             :     permission to link the code of this program with any edition of
      24             :     the Qt library by Trolltech AS, Norway (or with modified versions
      25             :     of Qt that use the same license as Qt), and distribute linked
      26             :     combinations including the two.  You must obey the GNU General
      27             :     Public License in all respects for all of the code used other than
      28             :     Qt.  If you modify this file, you may extend this exception to
      29             :     your version of the file, but you are not obligated to do so.  If
      30             :     you do not wish to do so, delete this exception statement from
      31             :     your version.
      32             : */
      33             : 
      34             : #include "qgpgmedecryptjob.h"
      35             : 
      36             : #include "dataprovider.h"
      37             : 
      38             : #include "context.h"
      39             : #include "decryptionresult.h"
      40             : #include "data.h"
      41             : 
      42             : #include <QBuffer>
      43             : 
      44             : #include <cassert>
      45             : 
      46             : using namespace QGpgME;
      47             : using namespace GpgME;
      48             : 
      49           2 : QGpgMEDecryptJob::QGpgMEDecryptJob(Context *context)
      50           2 :     : mixin_type(context)
      51             : {
      52           2 :     lateInitialization();
      53           2 : }
      54             : 
      55           4 : QGpgMEDecryptJob::~QGpgMEDecryptJob() {}
      56             : 
      57           2 : static QGpgMEDecryptJob::result_type decrypt(Context *ctx, QThread *thread,
      58             :                                              const std::weak_ptr<QIODevice> &cipherText_,
      59             :                                              const std::weak_ptr<QIODevice> &plainText_)
      60             : {
      61             : 
      62           2 :     const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
      63           4 :     const std::shared_ptr<QIODevice> plainText = plainText_.lock();
      64             : 
      65           4 :     const _detail::ToThreadMover ctMover(cipherText, thread);
      66           4 :     const _detail::ToThreadMover ptMover(plainText,  thread);
      67             : 
      68           4 :     QGpgME::QIODeviceDataProvider in(cipherText);
      69           4 :     const Data indata(&in);
      70             : 
      71           2 :     if (!plainText) {
      72           2 :         QGpgME::QByteArrayDataProvider out;
      73           4 :         Data outdata(&out);
      74             : 
      75           4 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      76           4 :         Error ae;
      77           4 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      78           4 :         return std::make_tuple(res, out.data(), log, ae);
      79             :     } else {
      80           0 :         QGpgME::QIODeviceDataProvider out(plainText);
      81           0 :         Data outdata(&out);
      82             : 
      83           0 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      84           0 :         Error ae;
      85           0 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      86           0 :         return std::make_tuple(res, QByteArray(), log, ae);
      87           2 :     }
      88             : 
      89             : }
      90             : 
      91           2 : static QGpgMEDecryptJob::result_type decrypt_qba(Context *ctx, const QByteArray &cipherText)
      92             : {
      93           2 :     const std::shared_ptr<QBuffer> buffer(new QBuffer);
      94           2 :     buffer->setData(cipherText);
      95           2 :     if (!buffer->open(QIODevice::ReadOnly)) {
      96           0 :         assert(!"This should never happen: QBuffer::open() failed");
      97             :     }
      98           2 :     return decrypt(ctx, 0, buffer, std::shared_ptr<QIODevice>());
      99             : }
     100             : 
     101           0 : Error QGpgMEDecryptJob::start(const QByteArray &cipherText)
     102             : {
     103           0 :     run(std::bind(&decrypt_qba, std::placeholders::_1, cipherText));
     104           0 :     return Error();
     105             : }
     106             : 
     107           0 : void QGpgMEDecryptJob::start(const std::shared_ptr<QIODevice> &cipherText, const std::shared_ptr<QIODevice> &plainText)
     108             : {
     109           0 :     run(std::bind(&decrypt, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4), cipherText, plainText);
     110           0 : }
     111             : 
     112           2 : GpgME::DecryptionResult QGpgME::QGpgMEDecryptJob::exec(const QByteArray &cipherText,
     113             :         QByteArray &plainText)
     114             : {
     115           2 :     const result_type r = decrypt_qba(context(), cipherText);
     116           2 :     plainText = std::get<1>(r);
     117           2 :     resultHook(r);
     118           2 :     return mResult;
     119             : }
     120             : 
     121             : //PENDING(marc) implement showErrorDialog()
     122             : 
     123           2 : void QGpgMEDecryptJob::resultHook(const result_type &tuple)
     124             : {
     125           2 :     mResult = std::get<0>(tuple);
     126           2 : }
     127             : 
     128             : #include "qgpgmedecryptjob.moc"