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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 /sfx2/source/doc/DocumentSigner.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--sfx2/source/doc/DocumentSigner.cxx121
1 files changed, 121 insertions, 0 deletions
diff --git a/sfx2/source/doc/DocumentSigner.cxx b/sfx2/source/doc/DocumentSigner.cxx
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+++ b/sfx2/source/doc/DocumentSigner.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 <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: */