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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /oox/source/crypto/StrongEncryptionDataSpace.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--oox/source/crypto/StrongEncryptionDataSpace.cxx203
1 files changed, 203 insertions, 0 deletions
diff --git a/oox/source/crypto/StrongEncryptionDataSpace.cxx b/oox/source/crypto/StrongEncryptionDataSpace.cxx
new file mode 100644
index 000000000..fd1b823b8
--- /dev/null
+++ b/oox/source/crypto/StrongEncryptionDataSpace.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#include <oox/crypto/StrongEncryptionDataSpace.hxx>
+#include <oox/crypto/AgileEngine.hxx>
+#include <oox/crypto/Standard2007Engine.hxx>
+#include <oox/helper/binaryoutputstream.hxx>
+#include <oox/helper/binaryinputstream.hxx>
+#include <com/sun/star/io/SequenceInputStream.hpp>
+#include <com/sun/star/io/XSequenceOutputStream.hpp>
+
+#include <comphelper/sequenceashashmap.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+using namespace css;
+using namespace css::beans;
+using namespace css::io;
+using namespace css::lang;
+using namespace css::uno;
+
+namespace oox::crypto
+{
+StrongEncryptionDataSpace::StrongEncryptionDataSpace(const Reference<XComponentContext>& rxContext)
+ : mxContext(rxContext)
+ , mCryptoEngine(new Standard2007Engine)
+{
+}
+
+sal_Bool StrongEncryptionDataSpace::generateEncryptionKey(const OUString& rPassword)
+{
+ if (!mCryptoEngine)
+ return false;
+
+ return mCryptoEngine->generateEncryptionKey(rPassword);
+}
+
+sal_Bool StrongEncryptionDataSpace::checkDataIntegrity()
+{
+ if (!mCryptoEngine)
+ return false;
+
+ return mCryptoEngine->checkDataIntegrity();
+}
+
+sal_Bool StrongEncryptionDataSpace::decrypt(const Reference<XInputStream>& rxInputStream,
+ Reference<XOutputStream>& rxOutputStream)
+{
+ if (!mCryptoEngine)
+ return false;
+
+ BinaryXInputStream aInputStream(rxInputStream, true);
+ BinaryXOutputStream aOutputStream(rxOutputStream, true);
+
+ mCryptoEngine->decrypt(aInputStream, aOutputStream);
+
+ rxOutputStream->flush();
+ return true;
+}
+
+Reference<XInputStream> StrongEncryptionDataSpace::getStream(const Sequence<NamedValue>& rStreams,
+ std::u16string_view sStreamName)
+{
+ for (const auto& aStream : rStreams)
+ {
+ if (aStream.Name == sStreamName)
+ {
+ Sequence<sal_Int8> aSeq;
+ aStream.Value >>= aSeq;
+ Reference<XInputStream> aStream2(
+ io::SequenceInputStream::createStreamFromSequence(mxContext, aSeq),
+ UNO_QUERY_THROW);
+ return aStream2;
+ }
+ }
+ return nullptr;
+}
+
+sal_Bool StrongEncryptionDataSpace::readEncryptionInfo(const Sequence<NamedValue>& aStreams)
+{
+ Reference<XInputStream> xEncryptionInfo = getStream(aStreams, u"EncryptionInfo");
+ if (!xEncryptionInfo.is())
+ return false;
+
+ BinaryXInputStream aBinaryInputStream(xEncryptionInfo, true);
+ sal_uInt32 aVersion = aBinaryInputStream.readuInt32();
+
+ switch (aVersion)
+ {
+ case msfilter::VERSION_INFO_2007_FORMAT:
+ case msfilter::VERSION_INFO_2007_FORMAT_SP2:
+ mCryptoEngine.reset(new Standard2007Engine);
+ break;
+ case msfilter::VERSION_INFO_AGILE:
+ mCryptoEngine.reset(new AgileEngine());
+ break;
+ default:
+ break;
+ }
+
+ if (!mCryptoEngine)
+ return false;
+
+ return mCryptoEngine->readEncryptionInfo(xEncryptionInfo);
+}
+
+sal_Bool StrongEncryptionDataSpace::setupEncryption(const Sequence<NamedValue>& rMediaEncData)
+{
+ if (!mCryptoEngine)
+ return false;
+
+ OUString sPassword;
+ for (const auto& aParam : rMediaEncData)
+ {
+ if (aParam.Name == "OOXPassword")
+ {
+ aParam.Value >>= sPassword;
+ }
+ }
+
+ return mCryptoEngine->setupEncryption(sPassword);
+}
+
+Sequence<NamedValue> StrongEncryptionDataSpace::createEncryptionData(const OUString& rPassword)
+{
+ comphelper::SequenceAsHashMap aEncryptionData;
+ aEncryptionData["OOXPassword"] <<= rPassword;
+ aEncryptionData["CryptoType"] <<= OUString("StrongEncryptionDataSpace");
+
+ return aEncryptionData.getAsConstNamedValueList();
+}
+
+Sequence<NamedValue>
+StrongEncryptionDataSpace::encrypt(const Reference<XInputStream>& rxInputStream)
+{
+ if (!mCryptoEngine)
+ return Sequence<NamedValue>();
+
+ Reference<XSeekable> xSeekable(rxInputStream, UNO_QUERY);
+ if (!xSeekable.is())
+ return Sequence<NamedValue>();
+
+ sal_uInt32 aLength = xSeekable->getLength(); // check length of the stream
+
+ Reference<XOutputStream> xOutputStream(
+ mxContext->getServiceManager()->createInstanceWithContext(
+ "com.sun.star.io.SequenceOutputStream", mxContext),
+ UNO_QUERY);
+
+ mCryptoEngine->encrypt(rxInputStream, xOutputStream, aLength);
+
+ comphelper::SequenceAsHashMap aStreams;
+
+ Reference<XSequenceOutputStream> xEncodedFileSequenceStream(xOutputStream, UNO_QUERY);
+ aStreams["EncryptedPackage"] <<= xEncodedFileSequenceStream->getWrittenBytes();
+
+ Reference<XOutputStream> aEncryptionInfoStream(
+ mxContext->getServiceManager()->createInstanceWithContext(
+ "com.sun.star.io.SequenceOutputStream", mxContext),
+ UNO_QUERY);
+ BinaryXOutputStream rStream(aEncryptionInfoStream, false);
+ mCryptoEngine->writeEncryptionInfo(rStream);
+ aEncryptionInfoStream->flush();
+ Reference<XSequenceOutputStream> aEncryptionInfoSequenceStream(aEncryptionInfoStream,
+ UNO_QUERY);
+
+ aStreams["EncryptionInfo"] <<= aEncryptionInfoSequenceStream->getWrittenBytes();
+
+ return aStreams.getAsConstNamedValueList();
+}
+
+OUString SAL_CALL StrongEncryptionDataSpace::getImplementationName()
+{
+ return "com.sun.star.comp.oox.crypto.StrongEncryptionDataSpace";
+}
+
+sal_Bool SAL_CALL StrongEncryptionDataSpace::supportsService(const OUString& rServiceName)
+{
+ return cppu::supportsService(this, rServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL StrongEncryptionDataSpace::getSupportedServiceNames()
+{
+ Sequence<OUString> aServices{ "com.sun.star.packages.PackageEncryption" };
+ return aServices;
+}
+
+} // namespace oox::crypto
+
+extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface*
+com_sun_star_comp_oox_crypto_StrongEncryptionDataSpace_get_implementation(
+ uno::XComponentContext* pCtx, uno::Sequence<uno::Any> const& /*rSeq*/)
+{
+ return cppu::acquire(new oox::crypto::StrongEncryptionDataSpace(pCtx));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */