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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 <iostream>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/xml/crypto/SEInitializer.hpp>
#include <comphelper/processfactory.hxx>
#include <cppuhelper/bootstrap.hxx>
#include <osl/file.hxx>
#include <sal/main.h>
#include <vcl/pngwrite.hxx>
#include <vcl/svapp.hxx>
#include <vcl/graphicfilter.hxx>
#include <pdfio/pdfdocument.hxx>
#include <svl/sigstruct.hxx>
using namespace com::sun::star;
namespace
{
/// Does PDF to PNG conversion using pdfium.
void generatePreview(const OString& rPdfPath, const OString& rPngPath)
{
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
Graphic aGraphic;
OUString aInURL;
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(rPdfPath), aInURL);
SvFileStream aInStream(aInURL, StreamMode::READ);
WmfExternal* pExtHeader = nullptr;
if (rFilter.ImportGraphic(aGraphic, OUString(), aInStream, GRFILTER_FORMAT_DONTKNOW, nullptr, GraphicFilterImportFlags::NONE, pExtHeader) != ERRCODE_NONE)
return;
BitmapEx aBitmapEx = aGraphic.GetBitmapEx();
vcl::PNGWriter aWriter(aBitmapEx);
OUString aOutURL;
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(rPngPath), aOutURL);
SvFileStream aOutStream(aOutURL, StreamMode::WRITE);
aWriter.Write(aOutStream);
}
int pdfVerify(int nArgc, char** pArgv)
{
if (nArgc < 2)
{
SAL_WARN("xmlsecurity.pdfio", "not enough parameters");
return 1;
}
// Initialize nss / mscrypto.
uno::Reference<uno::XComponentContext> xComponentContext;
try
{
xComponentContext = cppu::defaultBootstrap_InitialComponentContext();
}
catch (const uno::RuntimeException& rException)
{
SAL_WARN("xmlsecurity.pdfio", "cppu::defaultBootstrap_InitialComponentContext() failed: " << rException);
return 1;
}
uno::Reference<lang::XMultiComponentFactory> xMultiComponentFactory = xComponentContext->getServiceManager();
uno::Reference<lang::XMultiServiceFactory> xMultiServiceFactory(xMultiComponentFactory, uno::UNO_QUERY);
comphelper::setProcessServiceFactory(xMultiServiceFactory);
if (nArgc > 3 && OString(pArgv[3]) == "-p")
{
InitVCL();
generatePreview(pArgv[1], pArgv[2]);
DeInitVCL();
return 0;
}
uno::Reference<xml::crypto::XSEInitializer> xSEInitializer;
try
{
xSEInitializer = xml::crypto::SEInitializer::create(xComponentContext);
}
catch (const uno::DeploymentException& rException)
{
SAL_WARN("xmlsecurity.pdfio", "DeploymentException while creating SEInitializer: " << rException);
return 1;
}
uno::Reference<xml::crypto::XXMLSecurityContext> xSecurityContext = xSEInitializer->createSecurityContext(OUString());
OUString aInURL;
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(pArgv[1]), aInURL);
OUString aOutURL;
if (nArgc > 2)
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(pArgv[2]), aOutURL);
bool bRemoveSignature = false;
if (nArgc > 3 && OString(pArgv[3]) == "-r")
bRemoveSignature = true;
SvFileStream aStream(aInURL, StreamMode::READ);
vcl::filter::PDFDocument aDocument;
if (!aDocument.Read(aStream))
{
SAL_WARN("xmlsecurity.pdfio", "failed to read the document");
return 1;
}
if (bRemoveSignature)
{
std::cerr << "removing the last signature" << std::endl;
std::vector<vcl::filter::PDFObjectElement*> aSignatures = aDocument.GetSignatureWidgets();
if (aSignatures.empty())
{
std::cerr << "found no signatures" << std::endl;
return 1;
}
size_t nPosition = aSignatures.size() - 1;
if (!aDocument.RemoveSignature(nPosition))
{
SAL_WARN("xmlsecurity.pdfio", "failed to remove signature #" << nPosition);
return 1;
}
SvFileStream aOutStream(aOutURL, StreamMode::WRITE | StreamMode::TRUNC);
if (!aDocument.Write(aOutStream))
{
SAL_WARN("xmlsecurity.pdfio", "failed to write the document");
return 1;
}
return 0;
}
if (aOutURL.isEmpty())
{
std::cerr << "verifying signatures" << std::endl;
std::vector<vcl::filter::PDFObjectElement*> aSignatures = aDocument.GetSignatureWidgets();
if (aSignatures.empty())
std::cerr << "found no signatures" << std::endl;
else
{
std::cerr << "found " << aSignatures.size() << " signatures" << std::endl;
for (size_t i = 0; i < aSignatures.size(); ++i)
{
SignatureInformation aInfo(i);
bool bLast = i == aSignatures.size() - 1;
if (!xmlsecurity::pdfio::ValidateSignature(aStream, aSignatures[i], aInfo, bLast))
{
SAL_WARN("xmlsecurity.pdfio", "failed to determine digest match");
return 1;
}
bool bSuccess = aInfo.nStatus == xml::crypto::SecurityOperationStatus_OPERATION_SUCCEEDED;
std::cerr << "signature #" << i << ": digest match? " << bSuccess << std::endl;
}
}
return 0;
}
std::cerr << "adding a new signature" << std::endl;
uno::Reference<xml::crypto::XSecurityEnvironment> xSecurityEnvironment = xSecurityContext->getSecurityEnvironment();
uno::Sequence<uno::Reference<security::XCertificate>> aCertificates = xSecurityEnvironment->getPersonalCertificates();
if (!aCertificates.hasElements())
{
SAL_WARN("xmlsecurity.pdfio", "no signing certificates found");
return 1;
}
if (!aDocument.Sign(aCertificates[0], "pdfverify", /*bAdES=*/true))
{
SAL_WARN("xmlsecurity.pdfio", "failed to sign");
return 1;
}
SvFileStream aOutStream(aOutURL, StreamMode::WRITE | StreamMode::TRUNC);
if (!aDocument.Write(aOutStream))
{
SAL_WARN("xmlsecurity.pdfio", "failed to write the document");
return 1;
}
return 0;
}
}
SAL_IMPLEMENT_MAIN_WITH_ARGS(nArgc, pArgv)
{
try
{
return pdfVerify(nArgc, pArgv);
}
catch (...)
{
std::cerr << "pdfverify: uncaught exception while invoking pdfVerify()" << std::endl;
return 1;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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