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             : #ifdef HAVE_CONFIG_H
      35             :  #include "config.h"
      36             : #endif
      37             : 
      38             : #include "qgpgmedecryptjob.h"
      39             : 
      40             : #include "dataprovider.h"
      41             : 
      42             : #include "context.h"
      43             : #include "decryptionresult.h"
      44             : #include "data.h"
      45             : 
      46             : #include <QBuffer>
      47             : 
      48             : #include <cassert>
      49             : 
      50             : using namespace QGpgME;
      51             : using namespace GpgME;
      52             : 
      53           2 : QGpgMEDecryptJob::QGpgMEDecryptJob(Context *context)
      54           2 :     : mixin_type(context)
      55             : {
      56           2 :     lateInitialization();
      57           2 : }
      58             : 
      59           4 : QGpgMEDecryptJob::~QGpgMEDecryptJob() {}
      60             : 
      61           2 : static QGpgMEDecryptJob::result_type decrypt(Context *ctx, QThread *thread,
      62             :                                              const std::weak_ptr<QIODevice> &cipherText_,
      63             :                                              const std::weak_ptr<QIODevice> &plainText_)
      64             : {
      65             : 
      66           2 :     const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
      67           4 :     const std::shared_ptr<QIODevice> plainText = plainText_.lock();
      68             : 
      69           4 :     const _detail::ToThreadMover ctMover(cipherText, thread);
      70           4 :     const _detail::ToThreadMover ptMover(plainText,  thread);
      71             : 
      72           4 :     QGpgME::QIODeviceDataProvider in(cipherText);
      73           4 :     const Data indata(&in);
      74             : 
      75           2 :     if (!plainText) {
      76           2 :         QGpgME::QByteArrayDataProvider out;
      77           4 :         Data outdata(&out);
      78             : 
      79           4 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      80           4 :         Error ae;
      81           4 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      82           4 :         return std::make_tuple(res, out.data(), log, ae);
      83             :     } else {
      84           0 :         QGpgME::QIODeviceDataProvider out(plainText);
      85           0 :         Data outdata(&out);
      86             : 
      87           0 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      88           0 :         Error ae;
      89           0 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      90           0 :         return std::make_tuple(res, QByteArray(), log, ae);
      91           2 :     }
      92             : 
      93             : }
      94             : 
      95           2 : static QGpgMEDecryptJob::result_type decrypt_qba(Context *ctx, const QByteArray &cipherText)
      96             : {
      97           2 :     const std::shared_ptr<QBuffer> buffer(new QBuffer);
      98           2 :     buffer->setData(cipherText);
      99           2 :     if (!buffer->open(QIODevice::ReadOnly)) {
     100           0 :         assert(!"This should never happen: QBuffer::open() failed");
     101             :     }
     102           2 :     return decrypt(ctx, 0, buffer, std::shared_ptr<QIODevice>());
     103             : }
     104             : 
     105           0 : Error QGpgMEDecryptJob::start(const QByteArray &cipherText)
     106             : {
     107           0 :     run(std::bind(&decrypt_qba, std::placeholders::_1, cipherText));
     108           0 :     return Error();
     109             : }
     110             : 
     111           0 : void QGpgMEDecryptJob::start(const std::shared_ptr<QIODevice> &cipherText, const std::shared_ptr<QIODevice> &plainText)
     112             : {
     113           0 :     run(std::bind(&decrypt, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4), cipherText, plainText);
     114           0 : }
     115             : 
     116           2 : GpgME::DecryptionResult QGpgME::QGpgMEDecryptJob::exec(const QByteArray &cipherText,
     117             :         QByteArray &plainText)
     118             : {
     119           2 :     const result_type r = decrypt_qba(context(), cipherText);
     120           2 :     plainText = std::get<1>(r);
     121           2 :     resultHook(r);
     122           2 :     return mResult;
     123             : }
     124             : 
     125             : //PENDING(marc) implement showErrorDialog()
     126             : 
     127           2 : void QGpgMEDecryptJob::resultHook(const result_type &tuple)
     128             : {
     129           2 :     mResult = std::get<0>(tuple);
     130           2 : }
     131             : 
     132             : #include "qgpgmedecryptjob.moc"