Fix QDBusServer with more than one connection

Create a new QDBusConnectionPrivate for every new connection in
qDBusNewConnection instead of creating a single QDBusConnectionPrivate
in the QDBusServer constructor which gets assigned the latest connected
DBusConnection in qDBusNewConnection (and loses track on all previous
DBusConnections).

Also extend tst_QDBusConnection::registerObjectPeer() test with multiple
connections to the server.

Task-Number: QTBUG-24921
Change-Id: I4341e8d48d464f3fe0a314a6ab14f848545d65a0
(cherry picked from qtbase/a386194f9952683c0be5028f2b7f0ce9617fe404)
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

3 files changed, 15 insertions, 8 deletions

diff --git a/src/dbus/qdbusconnection_p.h b/src/dbus/qdbusconnection_p.h
index 2443fca..476456a 100644
--- a/src/dbus/qdbusconnection_p.h
+++ b/src/dbus/qdbusconnection_p.h
@@ -274,6 +274,7 @@ public:
     QDBusConnection::ConnectionCapabilities capabilities;
     QString name;               // this connection's name
     QString baseService;        // this connection's base service
+    QStringList serverConnectionNames;
 
     ConnectionMode mode;
 
diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index 71647e7..0f0b647 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -50,6 +50,7 @@
 
 #include "qdbusargument.h"
 #include "qdbusconnection_p.h"
+#include "qdbusconnectionmanager_p.h"
 #include "qdbusinterface_p.h"
 #include "qdbusmessage.h"
 #include "qdbusmetatype.h"
@@ -385,16 +386,21 @@ static void qDBusNewConnection(DBusServer *server, DBusConnection *connection, v
 
     // keep the connection alive
     q_dbus_connection_ref(connection);
-    QDBusConnectionPrivate *d = static_cast<QDBusConnectionPrivate *>(data);
+    QDBusConnectionPrivate *serverConnection = static_cast<QDBusConnectionPrivate *>(data);
+
+    QDBusConnectionPrivate *newConnection = new QDBusConnectionPrivate(serverConnection->parent());
+    QMutexLocker locker(&QDBusConnectionManager::instance()->mutex);
+    QDBusConnectionManager::instance()->setConnection(QLatin1String("QDBusServer-") + QString::number(reinterpret_cast<qulonglong>(newConnection)), newConnection);
+    serverConnection->serverConnectionNames << newConnection->name;
 
     // setPeer does the error handling for us
     QDBusErrorInternal error;
-    d->setPeer(connection, error);
+    newConnection->setPeer(connection, error);
 
-    QDBusConnection retval = QDBusConnectionPrivate::q(d);
+    QDBusConnection retval = QDBusConnectionPrivate::q(newConnection);
 
     // make QDBusServer emit the newConnection signal
-    d->serverConnection(retval);
+    serverConnection->serverConnection(retval);
 }
 
 } // extern "C"
diff --git a/src/dbus/qdbusserver.cpp b/src/dbus/qdbusserver.cpp
index 6acc770..90bfa6e 100644
--- a/src/dbus/qdbusserver.cpp
+++ b/src/dbus/qdbusserver.cpp
@@ -72,9 +72,6 @@ QDBusServer::QDBusServer(const QString &address, QObject *parent)
     }
     d = new QDBusConnectionPrivate(this);
 
-    QMutexLocker locker(&QDBusConnectionManager::instance()->mutex);
-    QDBusConnectionManager::instance()->setConnection(QLatin1String("QDBusServer-") + QString::number(reinterpret_cast<qulonglong>(d)), d);
-
     QObject::connect(d, SIGNAL(newServerConnection(QDBusConnection)),
                      this, SIGNAL(newConnection(QDBusConnection)));
 
@@ -89,7 +86,10 @@ QDBusServer::~QDBusServer()
 {
     if (QDBusConnectionManager::instance()) {
         QMutexLocker locker(&QDBusConnectionManager::instance()->mutex);
-        QDBusConnectionManager::instance()->removeConnection(d->name);
+        Q_FOREACH (const QString &name, d->serverConnectionNames) {
+            QDBusConnectionManager::instance()->removeConnection(name);
+        }
+        d->serverConnectionNames.clear();
     }
 }