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/*
qgpgmebackend.cpp
This file is part of qgpgme, the Qt API binding for gpgme
Copyright (c) 2004,2005 Klarälvdalens Datakonsult AB
Copyright (c) 2016 by Bundesamt für Sicherheit in der Informationstechnik
Software engineering by Intevation GmbH
QGpgME is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
QGpgME is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the Qt library by Trolltech AS, Norway (or with modified versions
of Qt that use the same license as Qt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
Qt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "qgpgmebackend.h"
#include "qgpgmegpgcardjob.h"
#include "error.h"
#include "engineinfo.h"
#include "protocol_p.h"
#include <QFile>
#include <QString>
const char QGpgME::QGpgMEBackend::OpenPGP[] = "OpenPGP";
const char QGpgME::QGpgMEBackend::SMIME[] = "SMIME";
QGpgME::QGpgMEBackend::QGpgMEBackend()
: mCryptoConfig(nullptr),
mOpenPGPProtocol(nullptr),
mSMIMEProtocol(nullptr)
{
GpgME::initializeLibrary();
}
QGpgME::QGpgMEBackend::~QGpgMEBackend()
{
delete mCryptoConfig; mCryptoConfig = nullptr;
delete mOpenPGPProtocol; mOpenPGPProtocol = nullptr;
delete mSMIMEProtocol; mSMIMEProtocol = nullptr;
}
QString QGpgME::QGpgMEBackend::name() const
{
return QStringLiteral("gpgme");
}
QString QGpgME::QGpgMEBackend::displayName() const
{
return QStringLiteral("GpgME");
}
QGpgME::CryptoConfig *QGpgME::QGpgMEBackend::config() const
{
if (!mCryptoConfig) {
if (GpgME::hasFeature(GpgME::GpgConfEngineFeature, 0)) {
mCryptoConfig = new QGpgMENewCryptoConfig;
}
}
return mCryptoConfig;
}
QGpgME::GpgCardJob *QGpgME::QGpgMEBackend::gpgCardJob() const
{
return new QGpgME::QGpgMEGpgCardJob();
}
static bool check(GpgME::Protocol proto, QString *reason)
{
if (!GpgME::checkEngine(proto)) {
return true;
}
if (!reason) {
return false;
}
// error, check why:
#if 0
Port away from localised string or delete.
const GpgME::EngineInfo ei = GpgME::engineInfo(proto);
if (ei.isNull()) {
*reason = i18n("GPGME was compiled without support for %1.", proto == GpgME::CMS ? QLatin1String("S/MIME") : QLatin1String("OpenPGP"));
} else if (ei.fileName() && !ei.version()) {
*reason = i18n("Engine %1 is not installed properly.", QFile::decodeName(ei.fileName()));
} else if (ei.fileName() && ei.version() && ei.requiredVersion())
*reason = i18n("Engine %1 version %2 installed, "
"but at least version %3 is required.",
QFile::decodeName(ei.fileName()), QLatin1String(ei.version()), QLatin1String(ei.requiredVersion()));
else {
*reason = i18n("Unknown problem with engine for protocol %1.", proto == GpgME::CMS ? QLatin1String("S/MIME") : QLatin1String("OpenPGP"));
}
#endif
return false;
}
bool QGpgME::QGpgMEBackend::checkForOpenPGP(QString *reason) const
{
return check(GpgME::OpenPGP, reason);
}
bool QGpgME::QGpgMEBackend::checkForSMIME(QString *reason) const
{
return check(GpgME::CMS, reason);
}
bool QGpgME::QGpgMEBackend::checkForProtocol(const char *name, QString *reason) const
{
if (qstricmp(name, OpenPGP) == 0) {
return check(GpgME::OpenPGP, reason);
}
if (qstricmp(name, SMIME) == 0) {
return check(GpgME::CMS, reason);
}
if (reason) {
*reason = QStringLiteral("Unsupported protocol \"%1\"").arg(QLatin1String(name));
}
return false;
}
QGpgME::Protocol *QGpgME::QGpgMEBackend::openpgp() const
{
if (!mOpenPGPProtocol)
if (checkForOpenPGP()) {
mOpenPGPProtocol = new ::Protocol(GpgME::OpenPGP);
}
return mOpenPGPProtocol;
}
QGpgME::Protocol *QGpgME::QGpgMEBackend::smime() const
{
if (!mSMIMEProtocol)
if (checkForSMIME()) {
mSMIMEProtocol = new ::Protocol(GpgME::CMS);
}
return mSMIMEProtocol;
}
QGpgME::Protocol *QGpgME::QGpgMEBackend::protocol(const char *name) const
{
if (qstricmp(name, OpenPGP) == 0) {
return openpgp();
}
if (qstricmp(name, SMIME) == 0) {
return smime();
}
return nullptr;
}
bool QGpgME::QGpgMEBackend::supportsProtocol(const char *name) const
{
return qstricmp(name, OpenPGP) == 0 || qstricmp(name, SMIME) == 0;
}
const char *QGpgME::QGpgMEBackend::enumerateProtocols(int i) const
{
switch (i) {
case 0: return OpenPGP;
case 1: return SMIME;
default: return nullptr;
}
}
static QGpgME::QGpgMEBackend *gpgmeBackend;
QGpgME::CryptoConfig *QGpgME::cryptoConfig()
{
if (!gpgmeBackend) {
gpgmeBackend = new QGpgME::QGpgMEBackend();
}
return gpgmeBackend->config();
}
QGpgME::Protocol *QGpgME::openpgp()
{
if (!gpgmeBackend) {
gpgmeBackend = new QGpgME::QGpgMEBackend();
}
return gpgmeBackend->openpgp();
}
QGpgME::Protocol *QGpgME::smime()
{
if (!gpgmeBackend) {
gpgmeBackend = new QGpgME::QGpgMEBackend();
}
return gpgmeBackend->smime();
}
QGpgME::GpgCardJob *QGpgME::gpgCardJob ()
{
if (!gpgmeBackend) {
gpgmeBackend = new QGpgME::QGpgMEBackend();
}
return gpgmeBackend->gpgCardJob();
}

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