Reduce indentation by returning early on error condition
Change-Id: Iebf6eca68f0dcba87ab517952009ee6dfb4b588c Reviewed-on: https://gerrit.libreoffice.org/54475 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
This commit is contained in:
Samuel Mehrbrodt
@@ -3667,71 +3667,103 @@ bool SfxMedium::SignContents_Impl(const Reference<XCertificate> xCert, const OUS
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{
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bool bChanges = false;
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// the medium should be closed to be able to sign, the caller is responsible to close it
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if ( !IsOpen() && !GetError() )
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if (IsOpen() || GetError())
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{
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// The component should know if there was a valid document signature, since
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// it should show a warning in this case
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uno::Reference< security::XDocumentDigitalSignatures > xSigner(
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security::DocumentDigitalSignatures::createWithVersionAndValidSignature(
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comphelper::getProcessComponentContext(), aODFVersion, bHasValidDocumentSignature ) );
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SAL_WARN("sfx.doc", "The medium must be closed by the signer!");
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return bChanges;
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}
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uno::Reference< embed::XStorage > xWriteableZipStor;
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// Signing is not modification of the document, as seen by the user
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// ("only a saved document can be signed"). So allow signing in the
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// "opened read-only, but not physically-read-only" case.
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if (!IsOriginallyReadOnly())
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// The component should know if there was a valid document signature, since
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// it should show a warning in this case
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uno::Reference< security::XDocumentDigitalSignatures > xSigner(
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security::DocumentDigitalSignatures::createWithVersionAndValidSignature(
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comphelper::getProcessComponentContext(), aODFVersion, bHasValidDocumentSignature ) );
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uno::Reference< embed::XStorage > xWriteableZipStor;
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// Signing is not modification of the document, as seen by the user
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// ("only a saved document can be signed"). So allow signing in the
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// "opened read-only, but not physically-read-only" case.
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if (!IsOriginallyReadOnly())
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{
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// we can reuse the temporary file if there is one already
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CreateTempFile( false );
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GetMedium_Impl();
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try
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{
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// we can reuse the temporary file if there is one already
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CreateTempFile( false );
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GetMedium_Impl();
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if ( !pImpl->xStream.is() )
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throw uno::RuntimeException();
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bool bODF = GetFilter()->IsOwnFormat();
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try
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{
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if ( !pImpl->xStream.is() )
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xWriteableZipStor = ::comphelper::OStorageHelper::GetStorageOfFormatFromStream( ZIP_STORAGE_FORMAT_STRING, pImpl->xStream );
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}
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catch (const io::IOException& rException)
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{
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if (bODF)
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SAL_WARN("sfx.doc", "ODF stream is not a zip storage: " << rException);
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}
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if ( !xWriteableZipStor.is() && bODF )
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throw uno::RuntimeException();
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uno::Reference< embed::XStorage > xMetaInf;
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uno::Reference<container::XNameAccess> xNameAccess(xWriteableZipStor, uno::UNO_QUERY);
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if (xNameAccess.is() && xNameAccess->hasByName("META-INF"))
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{
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xMetaInf = xWriteableZipStor->openStorageElement(
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"META-INF",
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embed::ElementModes::READWRITE );
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if ( !xMetaInf.is() )
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throw uno::RuntimeException();
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}
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bool bODF = GetFilter()->IsOwnFormat();
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try
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if ( bScriptingContent )
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{
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// If the signature has already the document signature it will be removed
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// after the scripting signature is inserted.
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uno::Reference< io::XStream > xStream(
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xMetaInf->openStreamElement( xSigner->getScriptingContentSignatureDefaultStreamName(),
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embed::ElementModes::READWRITE ),
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uno::UNO_SET_THROW );
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if ( xSigner->signScriptingContent( GetZipStorageToSign_Impl(), xStream ) )
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{
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xWriteableZipStor = ::comphelper::OStorageHelper::GetStorageOfFormatFromStream( ZIP_STORAGE_FORMAT_STRING, pImpl->xStream );
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// remove the document signature if any
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OUString aDocSigName = xSigner->getDocumentContentSignatureDefaultStreamName();
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if ( !aDocSigName.isEmpty() && xMetaInf->hasByName( aDocSigName ) )
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xMetaInf->removeElement( aDocSigName );
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uno::Reference< embed::XTransactedObject > xTransact( xMetaInf, uno::UNO_QUERY_THROW );
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xTransact->commit();
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xTransact.set( xWriteableZipStor, uno::UNO_QUERY_THROW );
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xTransact->commit();
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// the temporary file has been written, commit it to the original file
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Commit();
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bChanges = true;
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}
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catch (const io::IOException& rException)
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}
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else
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{
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if (xMetaInf.is())
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{
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if (bODF)
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SAL_WARN("sfx.doc", "ODF stream is not a zip storage: " << rException);
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}
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// ODF.
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uno::Reference< io::XStream > xStream;
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if (GetFilter() && GetFilter()->IsOwnFormat())
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xStream.set(xMetaInf->openStreamElement(xSigner->getDocumentContentSignatureDefaultStreamName(), embed::ElementModes::READWRITE), uno::UNO_SET_THROW);
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if ( !xWriteableZipStor.is() && bODF )
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throw uno::RuntimeException();
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bool bSuccess = false;
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if (xCert.is())
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bSuccess = xSigner->signDocumentContentWithCertificate(
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GetZipStorageToSign_Impl(), xStream, xCert, aSignatureLineId);
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else
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bSuccess = xSigner->signDocumentContent(GetZipStorageToSign_Impl(),
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xStream);
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uno::Reference< embed::XStorage > xMetaInf;
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uno::Reference<container::XNameAccess> xNameAccess(xWriteableZipStor, uno::UNO_QUERY);
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if (xNameAccess.is() && xNameAccess->hasByName("META-INF"))
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{
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xMetaInf = xWriteableZipStor->openStorageElement(
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"META-INF",
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embed::ElementModes::READWRITE );
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if ( !xMetaInf.is() )
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throw uno::RuntimeException();
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}
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if ( bScriptingContent )
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{
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// If the signature has already the document signature it will be removed
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// after the scripting signature is inserted.
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uno::Reference< io::XStream > xStream(
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xMetaInf->openStreamElement( xSigner->getScriptingContentSignatureDefaultStreamName(),
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embed::ElementModes::READWRITE ),
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uno::UNO_SET_THROW );
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if ( xSigner->signScriptingContent( GetZipStorageToSign_Impl(), xStream ) )
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if (bSuccess)
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{
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// remove the document signature if any
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OUString aDocSigName = xSigner->getDocumentContentSignatureDefaultStreamName();
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if ( !aDocSigName.isEmpty() && xMetaInf->hasByName( aDocSigName ) )
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xMetaInf->removeElement( aDocSigName );
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uno::Reference< embed::XTransactedObject > xTransact( xMetaInf, uno::UNO_QUERY_THROW );
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xTransact->commit();
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xTransact.set( xWriteableZipStor, uno::UNO_QUERY_THROW );
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@@ -3742,107 +3774,77 @@ bool SfxMedium::SignContents_Impl(const Reference<XCertificate> xCert, const OUS
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bChanges = true;
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}
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}
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else
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else if (xWriteableZipStor.is())
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{
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if (xMetaInf.is())
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// OOXML.
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uno::Reference<io::XStream> xStream;
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bool bSuccess = false;
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if (xCert.is())
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{
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// ODF.
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uno::Reference< io::XStream > xStream;
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if (GetFilter() && GetFilter()->IsOwnFormat())
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xStream.set(xMetaInf->openStreamElement(xSigner->getDocumentContentSignatureDefaultStreamName(), embed::ElementModes::READWRITE), uno::UNO_SET_THROW);
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bool bSuccess = false;
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if (xCert.is())
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bSuccess = xSigner->signDocumentContentWithCertificate(
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GetZipStorageToSign_Impl(), xStream, xCert, aSignatureLineId);
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else
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bSuccess = xSigner->signDocumentContent(GetZipStorageToSign_Impl(),
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xStream);
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if (bSuccess)
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{
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uno::Reference< embed::XTransactedObject > xTransact( xMetaInf, uno::UNO_QUERY_THROW );
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xTransact->commit();
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xTransact.set( xWriteableZipStor, uno::UNO_QUERY_THROW );
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xTransact->commit();
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// the temporary file has been written, commit it to the original file
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Commit();
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bChanges = true;
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}
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}
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else if (xWriteableZipStor.is())
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{
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// OOXML.
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uno::Reference<io::XStream> xStream;
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bool bSuccess = false;
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if (xCert.is())
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{
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bSuccess = xSigner->signDocumentContentWithCertificate(
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GetZipStorageToSign_Impl(/*bReadOnly=*/false), xStream, xCert, aSignatureLineId);
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}
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else
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{
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// We need read-write to be able to add the signature relation.
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bSuccess =xSigner->signDocumentContent(
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GetZipStorageToSign_Impl(/*bReadOnly=*/false), xStream);
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}
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if (bSuccess)
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{
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uno::Reference<embed::XTransactedObject> xTransact(xWriteableZipStor, uno::UNO_QUERY_THROW);
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xTransact->commit();
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// the temporary file has been written, commit it to the original file
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Commit();
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bChanges = true;
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}
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bSuccess = xSigner->signDocumentContentWithCertificate(
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GetZipStorageToSign_Impl(/*bReadOnly=*/false), xStream, xCert, aSignatureLineId);
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}
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else
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{
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// Something not ZIP based: e.g. PDF.
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std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(GetName(), StreamMode::READ | StreamMode::WRITE));
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uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(*pStream));
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if (xSigner->signDocumentContent(uno::Reference<embed::XStorage>(), xStream))
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bChanges = true;
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// We need read-write to be able to add the signature relation.
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bSuccess =xSigner->signDocumentContent(
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GetZipStorageToSign_Impl(/*bReadOnly=*/false), xStream);
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}
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if (bSuccess)
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{
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uno::Reference<embed::XTransactedObject> xTransact(xWriteableZipStor, uno::UNO_QUERY_THROW);
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xTransact->commit();
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// the temporary file has been written, commit it to the original file
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Commit();
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bChanges = true;
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}
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}
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else
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{
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// Something not ZIP based: e.g. PDF.
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std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(GetName(), StreamMode::READ | StreamMode::WRITE));
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uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(*pStream));
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if (xSigner->signDocumentContent(uno::Reference<embed::XStorage>(), xStream))
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bChanges = true;
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}
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}
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catch ( const uno::Exception& )
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{
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SAL_WARN( "sfx.doc", "Couldn't use signing functionality!" );
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}
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CloseAndRelease();
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}
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else
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catch ( const uno::Exception& )
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{
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try
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{
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if ( bScriptingContent )
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xSigner->showScriptingContentSignatures( GetZipStorageToSign_Impl(), uno::Reference< io::XInputStream >() );
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else
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{
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uno::Reference<embed::XStorage> xStorage = GetZipStorageToSign_Impl();
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if (xStorage.is())
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xSigner->showDocumentContentSignatures(xStorage, uno::Reference<io::XInputStream>());
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else
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{
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std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(GetName(), StreamMode::READ));
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uno::Reference<io::XInputStream> xStream(new utl::OStreamWrapper(*pStream));
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xSigner->showDocumentContentSignatures(uno::Reference<embed::XStorage>(), xStream);
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}
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}
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}
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catch( const uno::Exception& )
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{
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SAL_WARN( "sfx.doc", "Couldn't use signing functionality!" );
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}
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SAL_WARN( "sfx.doc", "Couldn't use signing functionality!" );
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}
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ResetError();
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CloseAndRelease();
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}
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else
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{
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try
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{
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if ( bScriptingContent )
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xSigner->showScriptingContentSignatures( GetZipStorageToSign_Impl(), uno::Reference< io::XInputStream >() );
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else
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{
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uno::Reference<embed::XStorage> xStorage = GetZipStorageToSign_Impl();
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if (xStorage.is())
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xSigner->showDocumentContentSignatures(xStorage, uno::Reference<io::XInputStream>());
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else
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{
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std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(GetName(), StreamMode::READ));
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uno::Reference<io::XInputStream> xStream(new utl::OStreamWrapper(*pStream));
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xSigner->showDocumentContentSignatures(uno::Reference<embed::XStorage>(), xStream);
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}
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}
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}
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catch( const uno::Exception& )
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{
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SAL_WARN( "sfx.doc", "Couldn't use signing functionality!" );
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}
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}
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ResetError();
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return bChanges;
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}
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