Fixed various PlatSec violations when app had no AllFiles capability.

Fixed QtCore in various places that caused Platform Security
violations in Symbian if AllFiles capability was missing from the
application. All of these these were caused by trying to access /private
folder unnecessarily, either by Qt code or Open C.

Task-number: 249008
Reviewed-by: Janne Koskinen

1 files changed, 14 insertions, 1 deletions

diff --git a/src/corelib/plugin/qpluginloader.cpp b/src/corelib/plugin/qpluginloader.cpp
index eb963d0..7b3f011 100644
--- a/src/corelib/plugin/qpluginloader.cpp
+++ b/src/corelib/plugin/qpluginloader.cpp
@@ -48,6 +48,11 @@
 #include "qdebug.h"
 #include "qdir.h"
 
+#if defined(Q_OS_SYMBIAN)
+# include <f32file.h>
+# include "private/qcore_symbian_p.h"
+#endif
+
 #ifndef QT_NO_LIBRARY
 
 QT_BEGIN_NAMESPACE
@@ -309,10 +314,18 @@ void QPluginLoader::setFileName(const QString &fileName)
             if (stubPath.at(1).toAscii() == ':')
                 stubPath.remove(0,2);
             QFileInfoList driveList(QDir::drives());
+            RFs rfs = qt_s60GetRFs();
             foreach(const QFileInfo& drive, driveList) {
                 QString testFilePath(drive.absolutePath() + stubPath);
                 testFilePath = QDir::cleanPath(testFilePath);
-                if (QFile::exists(testFilePath)) {
+                // Use native Symbian code to check for file existence, because checking
+                // for file from under non-existent protected dir like E:/private/<uid> using
+                // QFile::exists causes platform security violations on most apps.
+                QString nativePath = QDir::toNativeSeparators(testFilePath);
+                TPtrC ptr(qt_QString2TPtrC(nativePath));
+                TUint attributes;
+                TInt err = rfs.Att(ptr, attributes);
+                if (err == KErrNone) {
                     fn = testFilePath;
                     break;
                 }