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"
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