Fix crash when updating admin installation with user/temp repository

Grant permission rights for writing maintenance config file

Change-Id: Ib95fc05b80b95ce952b4bcf2395fbb5ed0ef9153
Task-number: QTIFW-740
Reviewed-by: Karsten Heimrich <karsten.heimrich@theqtcompany.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/src/libs/installer/packagemanagercore.cpp b/src/libs/installer/packagemanagercore.cpp
index 1f32b9119..89a90d343 100644
--- a/src/libs/installer/packagemanagercore.cpp
+++ b/src/libs/installer/packagemanagercore.cpp
@@ -1025,8 +1025,18 @@ void PackageManagerCore::networkSettingsChanged()
     d->m_repoFetched = false;
     d->m_updateSourcesAdded = false;
 
-    if (isMaintainer())
+    if (isMaintainer() ) {
+        bool gainedAdminRights = false;
+        QTemporaryFile tempAdminFile(d->targetDir() + QStringLiteral("/XXXXXX"));
+        if (!tempAdminFile.open() || !tempAdminFile.isWritable()) {
+            gainAdminRights();
+            gainedAdminRights = true;
+        }
         d->writeMaintenanceConfigFiles();
+        if (gainedAdminRights)
+            dropAdminRights();
+    }
+
     KDUpdater::FileDownloaderFactory::instance().setProxyFactory(proxyFactory());
 
     emit coreNetworkSettingsChanged();