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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /sfx2/source/doc/DocumentSigner.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.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-- | sfx2/source/doc/DocumentSigner.cxx | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/sfx2/source/doc/DocumentSigner.cxx b/sfx2/source/doc/DocumentSigner.cxx new file mode 100644 index 000000000..0106a6477 --- /dev/null +++ b/sfx2/source/doc/DocumentSigner.cxx @@ -0,0 +1,121 @@ +/* -*- 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 <sfx2/DocumentSigner.hxx> + +#include <tools/stream.hxx> +#include <unotools/ucbstreamhelper.hxx> +#include <unotools/streamwrap.hxx> + +#include <comphelper/storagehelper.hxx> +#include <comphelper/processfactory.hxx> + +#include <com/sun/star/embed/XStorage.hpp> +#include <com/sun/star/embed/XTransactedObject.hpp> +#include <com/sun/star/security/DocumentDigitalSignatures.hpp> +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/io/XStream.hpp> + +using namespace css; + +namespace sfx2 +{ +bool DocumentSigner::signDocument(uno::Reference<security::XCertificate> const& rxCertificate) +{ + std::unique_ptr<SvStream> pStream( + utl::UcbStreamHelper::CreateStream(m_aUrl, StreamMode::READ | StreamMode::WRITE)); + uno::Reference<io::XStream> xInputStream(new utl::OStreamWrapper(std::move(pStream))); + + bool bResult = false; + uno::Reference<embed::XStorage> xWriteableZipStore; + try + { + xWriteableZipStore = comphelper::OStorageHelper::GetStorageOfFormatFromStream( + ZIP_STORAGE_FORMAT_STRING, xInputStream); + } + catch (const io::IOException&) + { + } + + OUString aODFVersion(comphelper::OStorageHelper::GetODFVersionFromStorage(xWriteableZipStore)); + + uno::Reference<security::XDocumentDigitalSignatures> xSigner( + security::DocumentDigitalSignatures::createWithVersionAndValidSignature( + comphelper::getProcessComponentContext(), aODFVersion, + /*bHasValidDocumentSignature*/ true)); + + try + { + uno::Reference<embed::XStorage> xMetaInf; + if (xWriteableZipStore.is() && xWriteableZipStore->hasByName("META-INF")) + { + xMetaInf = xWriteableZipStore->openStorageElement("META-INF", + embed::ElementModes::READWRITE); + if (!xMetaInf.is()) + throw uno::RuntimeException(); + } + if (xMetaInf.is()) + { + uno::Reference<embed::XStorage> xStorage + = comphelper::OStorageHelper::GetStorageOfFormatFromStream( + ZIP_STORAGE_FORMAT_STRING, xInputStream); + + // ODF. + uno::Reference<io::XStream> xStream; + xStream.set( + xMetaInf->openStreamElement(xSigner->getDocumentContentSignatureDefaultStreamName(), + embed::ElementModes::READWRITE), + uno::UNO_SET_THROW); + bool bSuccess = xSigner->signDocumentWithCertificate(rxCertificate, xStorage, xStream); + if (bSuccess) + { + uno::Reference<embed::XTransactedObject> xTransact(xMetaInf, uno::UNO_QUERY_THROW); + xTransact->commit(); + xTransact.set(xWriteableZipStore, uno::UNO_QUERY_THROW); + xTransact->commit(); + bResult = true; + } + } + else if (xWriteableZipStore.is()) + { + uno::Reference<embed::XStorage> xStorage + = comphelper::OStorageHelper::GetStorageOfFormatFromStream( + ZIP_STORAGE_FORMAT_STRING, xInputStream); + + // OOXML. + uno::Reference<io::XStream> xStream; + + // We need read-write to be able to add the signature relation. + bool bSuccess = xSigner->signDocumentWithCertificate(rxCertificate, xStorage, xStream); + + if (bSuccess) + { + uno::Reference<embed::XTransactedObject> xTransact(xWriteableZipStore, + uno::UNO_QUERY_THROW); + xTransact->commit(); + bResult = true; + } + } + else + { + // Something not ZIP based: e.g. PDF. + bResult = xSigner->signDocumentWithCertificate( + rxCertificate, uno::Reference<embed::XStorage>(), xInputStream); + } + } + catch (const uno::Exception&) + { + } + return bResult; +} + +} // namespace sfx2 + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |