Don't permit write of non-existing or empty data via socket

Change-Id: Ic8387dd411a9784b6163a15d423cdeaa5e63ea30
Reviewed-by: Timur Pocheptsov <Timur.Pocheptsov@digia.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/bluetooth/qbluetoothsocket.cpp b/src/bluetooth/qbluetoothsocket.cpp
index f1e5568e..be099622 100644
--- a/src/bluetooth/qbluetoothsocket.cpp
+++ b/src/bluetooth/qbluetoothsocket.cpp
@@ -648,6 +648,13 @@ quint16 QBluetoothSocket::peerPort() const
 qint64 QBluetoothSocket::writeData(const char *data, qint64 maxSize)
 {
     Q_D(QBluetoothSocket);
+
+    if (!data || maxSize <= 0) {
+        d_ptr->errorString = tr("Invalid data/data size");
+        setSocketError(QBluetoothSocket::OperationError);
+        return -1;
+    }
+
     return d->writeData(data, maxSize);
 }