PDF4QT/PdfTool/pdftoolencrypt.cpp
2021-09-27 11:14:20 +02:00

99 lines
3.2 KiB
C++

// Copyright (C) 2021 Jakub Melka
//
// This file is part of PDF4QT.
//
// PDF4QT is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// PDF4QT is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#include "pdftoolencrypt.h"
#include "pdfdocumentbuilder.h"
#include "pdfdocumentwriter.h"
namespace pdftool
{
static PDFToolEncryptApplication s_encryptApplication;
QString PDFToolEncryptApplication::getStandardString(StandardString standardString) const
{
switch (standardString)
{
case Command:
return "encrypt";
case Name:
return PDFToolTranslationContext::tr("Encrypt");
case Description:
return PDFToolTranslationContext::tr("Encrypt the document (with only owner access only).");
default:
Q_ASSERT(false);
break;
}
return QString();
}
int PDFToolEncryptApplication::execute(const PDFToolOptions& options)
{
pdf::PDFSecurityHandlerFactory::SecuritySettings settings;
settings.algorithm = options.encryptionAlgorithm;
settings.encryptContents = options.encryptionContents;
settings.userPassword = options.encryptionUserPassword;
settings.ownerPassword = options.encryptionOwnerPassword;
settings.permissions = options.encryptionPermissions;
QString errorMessage;
if (!pdf::PDFSecurityHandlerFactory::validate(settings, &errorMessage))
{
PDFConsole::writeError(errorMessage, options.outputCodec);
return ErrorEncryptionSettings;
}
pdf::PDFSecurityHandlerPointer securityHandler = pdf::PDFSecurityHandlerFactory::createSecurityHandler(settings);
pdf::PDFDocument document;
QByteArray sourceData;
if (!readDocument(options, document, &sourceData, true))
{
if (readDocument(options, document, &sourceData, false))
{
PDFConsole::writeError(PDFToolTranslationContext::tr("Authorization as owner failed. Encryption change is not permitted if authorized as user only."), options.outputCodec);
}
return ErrorDocumentReading;
}
pdf::PDFDocumentBuilder builder(&document);
builder.setSecurityHandler(qMove(securityHandler));
document = builder.build();
pdf::PDFDocumentWriter writer(nullptr);
pdf::PDFOperationResult result = writer.write(options.document, &document, true);
if (!result)
{
PDFConsole::writeError(result.getErrorMessage(), options.outputCodec);
return ErrorDocumentWriting;
}
return ExitSuccess;
}
PDFToolAbstractApplication::Options PDFToolEncryptApplication::getOptionsFlags() const
{
return ConsoleFormat | OpenDocument | Encrypt;
}
} // namespace pdftool