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/*
Copyright (c) 2016 Sandro Knauß <sknauss@kde.org>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#include "multipartsigned.h"
#include "objecttreeparser.h"
#include "messagepart.h"
#include <KMime/Content>
#include <QGpgME/Protocol>
#include "mimetreeparser_debug.h"
#include <QTextCodec>
using namespace MimeTreeParser;
const MultiPartSignedBodyPartFormatter *MultiPartSignedBodyPartFormatter::self;
const Interface::BodyPartFormatter *MultiPartSignedBodyPartFormatter::create()
{
if (!self) {
self = new MultiPartSignedBodyPartFormatter();
}
return self;
}
MessagePart::Ptr MultiPartSignedBodyPartFormatter::process(Interface::BodyPart &part) const
{
KMime::Content *node = part.content();
if (node->contents().size() != 2) {
qCDebug(MIMETREEPARSER_LOG) << "mulitpart/signed must have exactly two child parts!" << endl
<< "processing as multipart/mixed";
if (!node->contents().isEmpty()) {
return MessagePart::Ptr(new MimeMessagePart(part.objectTreeParser(), node->contents().at(0), false));
} else {
return MessagePart::Ptr();
}
}
KMime::Content *signedData = node->contents().at(0);
KMime::Content *signature = node->contents().at(1);
Q_ASSERT(signedData);
Q_ASSERT(signature);
QString protocolContentType = node->contentType()->parameter(QStringLiteral("protocol")).toLower();
const QString signatureContentType = QLatin1String(signature->contentType()->mimeType().toLower());
if (protocolContentType.isEmpty()) {
qCWarning(MIMETREEPARSER_LOG) << "Message doesn't set the protocol for the multipart/signed content-type, "
"using content-type of the signature:" << signatureContentType;
protocolContentType = signatureContentType;
}
GpgME::Protocol protocol = GpgME::UnknownProtocol;
if (protocolContentType == QLatin1String("application/pkcs7-signature") ||
protocolContentType == QLatin1String("application/x-pkcs7-signature")) {
protocol = GpgME::CMS;
} else if (protocolContentType == QLatin1String("application/pgp-signature") ||
protocolContentType == QLatin1String("application/x-pgp-signature")) {
protocol = GpgME::OpenPGP;
}
if (protocol == GpgME::UnknownProtocol) {
return MessagePart::Ptr(new MimeMessagePart(part.objectTreeParser(), signedData, false));
}
part.nodeHelper()->setNodeProcessed(signature, true);
const QByteArray cleartext = KMime::LFtoCRLF(signedData->encodedContent());
const QTextCodec *aCodec(part.objectTreeParser()->codecFor(signedData));
SignedMessagePart::Ptr mp(new SignedMessagePart(part.objectTreeParser(),
aCodec->toUnicode(cleartext), protocol,
part.nodeHelper()->fromAsString(node), signature, signedData));
return mp;
}
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