[users] Add method for using hostnamed

SEE #1140

src/modules/users/CMakeLists.txt

@@ -1,4 +1,4 @@
-find_package( Qt5 COMPONENTS Core REQUIRED )
+find_package( Qt5 ${QT_VERSION} CONFIG REQUIRED Core DBus Network )
 find_package( Crypt REQUIRED )
 
 # Add optional libraries here
@@ -36,6 +36,7 @@ calamares_add_plugin( users
         calamaresui
         ${CRYPT_LIBRARIES}
         ${USER_EXTRA_LIB}
+        Qt5::DBus
     SHARED_LIB
 )
 

src/modules/users/SetHostNameJob.cpp

@@ -27,6 +27,9 @@
 
 #include <QDir>
 #include <QFile>
+#include <QtDBus/QDBusConnection>
+#include <QtDBus/QDBusInterface>
+#include <QtDBus/QDBusReply>
 
 SetHostNameJob::SetHostNameJob( const QString& hostname )
     : Calamares::Job()
@@ -79,6 +82,32 @@ ff02::2    ip6-allrouters
                   .failed() );
 }
 
+static void
+setSystemdHostname( const QString& hostname )
+{
+    QDBusInterface hostnamed( "org.freedesktop.hostname1",
+                              "/org/freedesktop/hostname1",
+                              "org.freedesktop.hostname1",
+                              QDBusConnection::systemBus() );
+
+    // Static, writes /etc/hostname
+    {
+        QDBusReply< uint > r = hostnamed.call( "SetStaticHostname", hostname, false );
+        if ( !r.isValid() )
+        {
+            cWarning() << "Could not set hostname through org.freedesktop.hostname1.SetStaticHostname." << r.error();
+        }
+    }
+    // Dynamic, updates kernel
+    {
+        QDBusReply< uint > r = hostnamed.call( "SetHostname", hostname, false );
+        if ( !r.isValid() )
+        {
+            cWarning() << "Could not set hostname through org.freedesktop.hostname1.SetHostname." << r.error();
+        }
+    }
+}
+
 
 Calamares::JobResult
 SetHostNameJob::exec()