Do not access QObject API before its private data is initialized.

Inside the ctor of the private data, the QObject has not yet
been associated with the data. Thus, accessing it indirectly i.e.
to setup private signal/slot connections, will trigger crashes.

Now we delay accessing this API and call an init() function manually
in the parent QObject-inheriting class.

Change-Id: I2c3ce7335c54d42af6bce87de867ee0ef197efc6
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>

diff --git a/src/websockets/qwebsocket.cpp b/src/websockets/qwebsocket.cpp
index 45394e3..6e60230 100644 (file)
--- a/src/websockets/qwebsocket.cpp
+++ b/src/websockets/qwebsocket.cpp
@@ -262,6 +262,8 @@ QWebSocket::QWebSocket(const QString &origin,
                        QObject *parent) :
     QObject(*(new QWebSocketPrivate(origin, version, this)), parent)
 {
+    Q_D(QWebSocket);
+    d->init();
 }
 
 /*!
@@ -301,6 +303,8 @@ QWebSocket::QWebSocket(QTcpSocket *pTcpSocket,
                        QWebSocketProtocol::Version version, QObject *parent) :
     QObject(*(new QWebSocketPrivate(pTcpSocket, version, this)), parent)
 {
+    Q_D(QWebSocket);
+    d->init();
 }
 
 /*!

diff --git a/src/websockets/qwebsocket_p.cpp b/src/websockets/qwebsocket_p.cpp
index fe4dd8a..5d58fec 100644 (file)
--- a/src/websockets/qwebsocket_p.cpp
+++ b/src/websockets/qwebsocket_p.cpp
@@ -111,7 +111,6 @@ QWebSocketPrivate::QWebSocketPrivate(const QString &origin, QWebSocketProtocol::
     m_dataProcessor(),
     m_configuration()
 {
-    init();
 }
 
 /*!
@@ -142,8 +141,6 @@ QWebSocketPrivate::QWebSocketPrivate(QTcpSocket *pTcpSocket, QWebSocketProtocol:
     m_dataProcessor(),
     m_configuration()
 {
-    init();
-    makeConnections(m_pSocket.data());
 }
 
 /*!
@@ -154,6 +151,10 @@ void QWebSocketPrivate::init()
     Q_ASSERT(q_ptr);
     //TODO: need a better randomizer
     qsrand(static_cast<uint>(QDateTime::currentMSecsSinceEpoch()));
+
+    if (m_pSocket) {
+        makeConnections(m_pSocket.data());
+    }
 }
 
 /*!

diff --git a/src/websockets/qwebsocketserver.cpp b/src/websockets/qwebsocketserver.cpp
index 10ee83e..a8a25be 100644 (file)
--- a/src/websockets/qwebsocketserver.cpp
+++ b/src/websockets/qwebsocketserver.cpp
@@ -236,6 +236,8 @@ QWebSocketServer::QWebSocketServer(const QString &serverName, SslMode secureMode
 #ifdef QT_NO_SSL
     Q_UNUSED(secureMode)
 #endif
+    Q_D(QWebSocketServer);
+    d->init();
 }
 
 /*!

diff --git a/src/websockets/qwebsocketserver_p.cpp b/src/websockets/qwebsocketserver_p.cpp
index 912c66e..6797cbc 100644 (file)
--- a/src/websockets/qwebsocketserver_p.cpp
+++ b/src/websockets/qwebsocketserver_p.cpp
@@ -73,6 +73,13 @@ QWebSocketServerPrivate::QWebSocketServerPrivate(const QString &serverName,
     m_errorString()
 {
     Q_ASSERT(pWebSocketServer);
+}
+
+/*!
+    \internal
+ */
+void QWebSocketServerPrivate::init()
+{
     if (m_secureMode == NonSecureMode) {
         m_pTcpServer = new QTcpServer();
         if (Q_LIKELY(m_pTcpServer))

diff --git a/src/websockets/qwebsocketserver_p.h b/src/websockets/qwebsocketserver_p.h
index a9aa880..c4afd3d 100644 (file)
--- a/src/websockets/qwebsocketserver_p.h
+++ b/src/websockets/qwebsocketserver_p.h
@@ -85,6 +85,7 @@ public:
                                      QWebSocketServer * const pWebSocketServer);
     virtual ~QWebSocketServerPrivate();
 
+    void init();
     void close();
     QString errorString() const;
     bool hasPendingConnections() const;