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-rw-r--r--src/corelib/plugin/plugin.pri7
-rw-r--r--src/corelib/plugin/qsystemlibrary.cpp136
-rw-r--r--src/corelib/plugin/qsystemlibrary_p.h106
3 files changed, 247 insertions, 2 deletions
diff --git a/src/corelib/plugin/plugin.pri b/src/corelib/plugin/plugin.pri
index c05ff48..ba86353 100644
--- a/src/corelib/plugin/plugin.pri
+++ b/src/corelib/plugin/plugin.pri
@@ -7,7 +7,8 @@ HEADERS += \
plugin/qlibrary_p.h \
plugin/qplugin.h \
plugin/quuid.h \
- plugin/qfactoryloader_p.h
+ plugin/qfactoryloader_p.h \
+ plugin/qsystemlibrary_p.h
SOURCES += \
plugin/qpluginloader.cpp \
@@ -16,7 +17,9 @@ SOURCES += \
plugin/qlibrary.cpp
win32 {
- SOURCES += plugin/qlibrary_win.cpp
+ SOURCES += \
+ plugin/qlibrary_win.cpp \
+ plugin/qsystemlibrary.cpp
}
unix {
diff --git a/src/corelib/plugin/qsystemlibrary.cpp b/src/corelib/plugin/qsystemlibrary.cpp
new file mode 100644
index 0000000..a11ed50
--- /dev/null
+++ b/src/corelib/plugin/qsystemlibrary.cpp
@@ -0,0 +1,136 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsystemlibrary_p.h"
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qfileinfo.h>
+
+/*!
+
+ \internal
+ \class QSystemLibrary
+
+ The purpose of this class is to load only libraries that are located in
+ well-known and trusted locations on the filesystem. It does not suffer from
+ the security problem that QLibrary has, therefore it will never search in
+ the current directory.
+
+ The search order is the same as the order in DLL Safe search mode Windows,
+ except that we don't search:
+ * The current directory
+ * The 16-bit system directory. (normally c:\windows\system)
+ * The Windows directory. (normally c:\windows)
+
+ This means that the effective search order is:
+ 1. Application path.
+ 2. System libraries path.
+ 3. Trying all paths inside the PATH environment variable.
+
+ Note, when onlySystemDirectory is true it will skip 1) and 3).
+
+ DLL Safe search mode is documented in the "Dynamic-Link Library Search
+ Order" document on MSDN.
+
+ Since library loading code is sometimes shared between Windows and WinCE,
+ this class can also be used on WinCE. However, its implementation just
+ calls the LoadLibrary() function. This is ok since it is documented as not
+ loading from the current directory on WinCE. This behaviour is documented
+ in the documentation for LoadLibrary for Windows CE at MSDN.
+ (http://msdn.microsoft.com/en-us/library/ms886736.aspx)
+*/
+#if defined(Q_OS_WINCE)
+HINSTANCE QSystemLibrary::load(const wchar_t *libraryName, bool onlySystemDirectory/*= true*/)
+{
+ return ::LoadLibrary(libraryName);
+}
+#else
+
+#if !defined(QT_BOOTSTRAPPED)
+extern QString qAppFileName();
+#endif
+
+static QString qSystemDirectory()
+{
+ QVarLengthArray<wchar_t, MAX_PATH> fullPath;
+
+ UINT retLen = ::GetSystemDirectory(fullPath.data(), MAX_PATH);
+ if (retLen > MAX_PATH) {
+ fullPath.resize(retLen);
+ retLen = ::GetSystemDirectory(fullPath.data(), retLen);
+ }
+ // in some rare cases retLen might be 0
+ return QString::fromWCharArray(fullPath.constData(), int(retLen));
+}
+
+HINSTANCE QSystemLibrary::load(const wchar_t *libraryName, bool onlySystemDirectory/*= true*/)
+{
+ QStringList searchOrder;
+
+#if !defined(QT_BOOTSTRAPPED)
+ if (!onlySystemDirectory)
+ searchOrder << QFileInfo(qAppFileName()).path();
+#endif
+ searchOrder << qSystemDirectory();
+
+ if (!onlySystemDirectory) {
+ const QString PATH(QLatin1String(qgetenv("PATH").constData()));
+ searchOrder << PATH.split(QLatin1Char(';'), QString::SkipEmptyParts);
+ }
+ QString fileName = QString::fromWCharArray(libraryName);
+ fileName.append(QLatin1String(".dll"));
+
+ // Start looking in the order specified
+ for (int i = 0; i < searchOrder.count(); ++i) {
+ QString fullPathAttempt = searchOrder.at(i);
+ if (!fullPathAttempt.endsWith(QLatin1Char('\\'))) {
+ fullPathAttempt.append(QLatin1Char('\\'));
+ }
+ fullPathAttempt.append(fileName);
+ HINSTANCE inst = ::LoadLibrary((const wchar_t *)fullPathAttempt.utf16());
+ if (inst != 0)
+ return inst;
+ }
+ return 0;
+
+}
+
+#endif //Q_OS_WINCE
diff --git a/src/corelib/plugin/qsystemlibrary_p.h b/src/corelib/plugin/qsystemlibrary_p.h
new file mode 100644
index 0000000..3251a3c
--- /dev/null
+++ b/src/corelib/plugin/qsystemlibrary_p.h
@@ -0,0 +1,106 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSYSTEMLIBRARY_P_H
+#define QSYSTEMLIBRARY_P_H
+
+#include <QtCore/qglobal.h>
+#ifdef Q_OS_WIN
+#include <qt_windows.h>
+#include <QtCore/qstring.h>
+
+class QSystemLibrary
+{
+public:
+ explicit QSystemLibrary(const QString &libraryName)
+ {
+ m_libraryName = libraryName;
+ m_handle = 0;
+ m_didLoad = false;
+ }
+
+ explicit QSystemLibrary(const wchar_t *libraryName)
+ {
+ m_libraryName = QString::fromWCharArray(libraryName);
+ m_handle = 0;
+ m_didLoad = false;
+ }
+
+ bool load(bool onlySystemDirectory = true)
+ {
+ m_handle = load((const wchar_t *)m_libraryName.utf16(), onlySystemDirectory);
+ m_didLoad = true;
+ return (m_handle != 0);
+ }
+
+ bool isLoaded()
+ {
+ return (m_handle != 0);
+ }
+
+ void *resolve(const char *symbol)
+ {
+ if (!m_didLoad)
+ load();
+ if (!m_handle)
+ return 0;
+#ifdef Q_OS_WINCE
+ return (void*)GetProcAddress(m_handle, (const wchar_t*)QString::fromLatin1(symbol).utf16());
+#else
+ return (void*)GetProcAddress(m_handle, symbol);
+#endif
+ }
+
+ static void *resolve(const QString &libraryName, const char *symbol)
+ {
+ return QSystemLibrary(libraryName).resolve(symbol);
+ }
+
+ static Q_CORE_EXPORT HINSTANCE load(const wchar_t *lpFileName, bool onlySystemDirectory = true);
+private:
+ HINSTANCE m_handle;
+ QString m_libraryName;
+ bool m_didLoad;
+};
+
+#endif //Q_OS_WIN
+
+#endif //QSYSTEMLIBRARY_P_H
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