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 by Bundesamt für Sicherheit in der Informationstechnik
       7             :     Software engineering by Intevation GmbH
       8             : 
       9             :     QGpgME is free software; you can redistribute it and/or
      10             :     modify it under the terms of the GNU General Public License as
      11             :     published by the Free Software Foundation; either version 2 of the
      12             :     License, or (at your option) any later version.
      13             : 
      14             :     QGpgME is distributed in the hope that it will be useful,
      15             :     but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      17             :     General Public License for more details.
      18             : 
      19             :     You should have received a copy of the GNU General Public License along
      20             :     with this program; if not, write to the Free Software Foundation, Inc.,
      21             :     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
      22             : 
      23             :     In addition, as a special exception, the copyright holders give
      24             :     permission to link the code of this program with any edition of
      25             :     the Qt library by Trolltech AS, Norway (or with modified versions
      26             :     of Qt that use the same license as Qt), and distribute linked
      27             :     combinations including the two.  You must obey the GNU General
      28             :     Public License in all respects for all of the code used other than
      29             :     Qt.  If you modify this file, you may extend this exception to
      30             :     your version of the file, but you are not obligated to do so.  If
      31             :     you do not wish to do so, delete this exception statement from
      32             :     your version.
      33             : */
      34             : 
      35             : #ifdef HAVE_CONFIG_H
      36             :  #include "config.h"
      37             : #endif
      38             : 
      39             : #include "qgpgmedecryptjob.h"
      40             : 
      41             : #include "dataprovider.h"
      42             : 
      43             : #include "context.h"
      44             : #include "decryptionresult.h"
      45             : #include "data.h"
      46             : 
      47             : #include <QBuffer>
      48             : 
      49             : #include <cassert>
      50             : 
      51             : using namespace QGpgME;
      52             : using namespace GpgME;
      53             : 
      54           3 : QGpgMEDecryptJob::QGpgMEDecryptJob(Context *context)
      55           3 :     : mixin_type(context)
      56             : {
      57           3 :     lateInitialization();
      58           3 : }
      59             : 
      60           6 : QGpgMEDecryptJob::~QGpgMEDecryptJob() {}
      61             : 
      62           3 : static QGpgMEDecryptJob::result_type decrypt(Context *ctx, QThread *thread,
      63             :                                              const std::weak_ptr<QIODevice> &cipherText_,
      64             :                                              const std::weak_ptr<QIODevice> &plainText_)
      65             : {
      66             : 
      67           6 :     const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
      68           6 :     const std::shared_ptr<QIODevice> plainText = plainText_.lock();
      69             : 
      70           6 :     const _detail::ToThreadMover ctMover(cipherText, thread);
      71           6 :     const _detail::ToThreadMover ptMover(plainText,  thread);
      72             : 
      73           6 :     QGpgME::QIODeviceDataProvider in(cipherText);
      74           6 :     const Data indata(&in);
      75             : 
      76           3 :     if (!plainText) {
      77           6 :         QGpgME::QByteArrayDataProvider out;
      78           6 :         Data outdata(&out);
      79             : 
      80           6 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      81           6 :         Error ae;
      82           6 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      83           3 :         return std::make_tuple(res, out.data(), log, ae);
      84             :     } else {
      85           0 :         QGpgME::QIODeviceDataProvider out(plainText);
      86           0 :         Data outdata(&out);
      87             : 
      88           0 :         const DecryptionResult res = ctx->decrypt(indata, outdata);
      89           0 :         Error ae;
      90           0 :         const QString log = _detail::audit_log_as_html(ctx, ae);
      91           0 :         return std::make_tuple(res, QByteArray(), log, ae);
      92             :     }
      93             : 
      94             : }
      95             : 
      96           3 : static QGpgMEDecryptJob::result_type decrypt_qba(Context *ctx, const QByteArray &cipherText)
      97             : {
      98           6 :     const std::shared_ptr<QBuffer> buffer(new QBuffer);
      99           3 :     buffer->setData(cipherText);
     100           3 :     if (!buffer->open(QIODevice::ReadOnly)) {
     101           0 :         assert(!"This should never happen: QBuffer::open() failed");
     102             :     }
     103           6 :     return decrypt(ctx, 0, buffer, std::shared_ptr<QIODevice>());
     104             : }
     105             : 
     106           0 : Error QGpgMEDecryptJob::start(const QByteArray &cipherText)
     107             : {
     108           0 :     run(std::bind(&decrypt_qba, std::placeholders::_1, cipherText));
     109           0 :     return Error();
     110             : }
     111             : 
     112           0 : void QGpgMEDecryptJob::start(const std::shared_ptr<QIODevice> &cipherText, const std::shared_ptr<QIODevice> &plainText)
     113             : {
     114           0 :     run(std::bind(&decrypt, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4), cipherText, plainText);
     115           0 : }
     116             : 
     117           3 : GpgME::DecryptionResult QGpgME::QGpgMEDecryptJob::exec(const QByteArray &cipherText,
     118             :         QByteArray &plainText)
     119             : {
     120           6 :     const result_type r = decrypt_qba(context(), cipherText);
     121           3 :     plainText = std::get<1>(r);
     122           3 :     resultHook(r);
     123           6 :     return mResult;
     124             : }
     125             : 
     126             : //PENDING(marc) implement showErrorDialog()
     127             : 
     128           3 : void QGpgMEDecryptJob::resultHook(const result_type &tuple)
     129             : {
     130           3 :     mResult = std::get<0>(tuple);
     131           3 : }
     132             : 
     133             : #include "qgpgmedecryptjob.moc"