diff options
Diffstat (limited to 'src/libs/installer/setpathonqtcoreoperation.cpp')
-rw-r--r-- | src/libs/installer/setpathonqtcoreoperation.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/libs/installer/setpathonqtcoreoperation.cpp b/src/libs/installer/setpathonqtcoreoperation.cpp new file mode 100644 index 000000000..80001b773 --- /dev/null +++ b/src/libs/installer/setpathonqtcoreoperation.cpp @@ -0,0 +1,175 @@ +/************************************************************************** +** +** This file is part of Installer Framework +** +** Copyright (c) 2011-2012 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** +** GNU Lesser General Public License Usage +** +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this file. +** Please review the following information to ensure the GNU Lesser General +** Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** Other Usage +** +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +**************************************************************************/ + +#include "setpathonqtcoreoperation.h" + +#include "qtpatch.h" + +#include <QtCore/QByteArrayMatcher> +#include <QtCore/QDir> +#include <QtCore/QDebug> + +using namespace QInstaller; + +namespace { + QByteArray getOldValue(const QString &binaryPath, const QByteArray &typeValue) + { + QFileInfo fileInfo(binaryPath); + + if (!fileInfo.exists()) { + qDebug() << "qpatch: warning: file '" << binaryPath << "' not found"; + return QByteArray(); + } + + QFile file(binaryPath); + int readOpenCount = 0; + while (!file.open(QFile::ReadOnly) && readOpenCount < 20000) { + ++readOpenCount; + qApp->processEvents(); + } + Q_ASSERT(file.isOpen()); + if (!file.isOpen()) { + qDebug() << "qpatch: warning: file '" << binaryPath << "' can not open as ReadOnly."; + qDebug() << file.errorString(); + return QByteArray(); + } + + const QByteArray source = file.readAll(); + file.close(); + + int offset = 0; + QByteArray searchValue = typeValue; + searchValue.append("="); + QByteArrayMatcher byteArrayMatcher(searchValue); + offset = byteArrayMatcher.indexIn(source, offset); + Q_ASSERT(offset > 0); + if (offset == -1) + return QByteArray(); + + int stringEndPosition = offset; + + //go to the position where other data starts + while (source.at(stringEndPosition++) != '\0') {} + + //after search string till the first \0 it should be our looking for QByteArray + return source.mid(offset + searchValue.size(), stringEndPosition - offset); + } +} + +SetPathOnQtCoreOperation::SetPathOnQtCoreOperation() +{ + setName(QLatin1String("SetPathOnQtCore")); +} + +void SetPathOnQtCoreOperation::backup() +{ +} + +bool SetPathOnQtCoreOperation::performOperation() +{ + const QStringList args = arguments(); + + if (args.count() != 3) { + setError(InvalidArguments); + setErrorString(tr("Invalid arguments in %0: %1 arguments given, exactly 3 expected.").arg(name()) + .arg(arguments().count())); + return false; + } + + const QString qtCoreLibraryDir = args.at(0); + const QByteArray typeValue(args.at(1).toUtf8()); + const QByteArray newValue = QDir::toNativeSeparators(args.at(2)).toUtf8(); + + QStringList possibleTypes; + possibleTypes << QLatin1String("qt_prfxpath") + << QLatin1String("qt_docspath") + << QLatin1String("qt_hdrspath") + << QLatin1String("qt_libspath") + << QLatin1String("qt_binspath") + << QLatin1String("qt_plugpath") + << QLatin1String("qt_impspath") + << QLatin1String("qt_datapath") + << QLatin1String("qt_trnspath") + << QLatin1String("qt_xmplpath") + << QLatin1String("qt_demopath"); + + if (!possibleTypes.contains(QString::fromUtf8(typeValue))) { + setError(InvalidArguments); + setErrorString(tr("The second type/value needs to be one of: %1").arg(possibleTypes.join( + QLatin1String(", ")))); + return false; + } + + if (255 < newValue.size()) { + qDebug() << "qpatch: error: newQtDir needs to be less than 255 characters."; + return false; + } + QStringList libraryFiles; +#ifdef Q_OS_WIN + libraryFiles << QString::fromLatin1("%1/QtCore4.dll").arg(qtCoreLibraryDir); + libraryFiles << QString::fromLatin1("%1/QtCore4d.dll").arg(qtCoreLibraryDir); +#else + libraryFiles << qtCoreLibraryDir + QLatin1String("/libQtCore.so"); +#endif + foreach (const QString coreLibrary, libraryFiles) { + if (QFile::exists(coreLibrary)) { + QByteArray oldValue(getOldValue(coreLibrary, typeValue)); + Q_ASSERT(!oldValue.isEmpty()); + oldValue = QByteArray("%0=%1").replace("%0", typeValue).replace("%1", oldValue); + QByteArray adjutedNewValue = + QByteArray("%0=%1").replace("%0", typeValue).replace("%1", newValue); + + bool isPatched = QtPatch::patchBinaryFile(coreLibrary, oldValue, adjutedNewValue); + if (!isPatched) { + qDebug() << "qpatch: warning: could not patch the plugin path in" << coreLibrary; + } + } + } + + return true; +} + +bool SetPathOnQtCoreOperation::undoOperation() +{ + return true; +} + +bool SetPathOnQtCoreOperation::testOperation() +{ + return true; +} + +Operation *SetPathOnQtCoreOperation::clone() const +{ + return new SetPathOnQtCoreOperation(); +} + |