dbus access problem

[Christian Ehrlicher]

Ralf Habacker schrieb:
> Jaroslaw Staniek schrieb:
>> Ralf Habacker said the following, On 2008-07-14 10:28:
>>   
>>> Hi,
>>>
>>> currently I'm extending kdeinit4 with a save application close feature 
>>> which calls the quit() method of /MainApplication over dbus using the 
>>> following code:
>>>
>>>     QDBusConnection connection = QDBusConnection::sessionBus();
>>>     QDBusConnectionInterface *bus = connection.interface();
>>>     const QStringList services = bus->registeredServiceNames();
>>>     foreach(const QString &service, services) {
>>>         if (!service.startsWith("org.kde"))
>>>             continue;
>>>         QDBusInterface *iface = new QDBusInterface(service,
>>>                                QLatin1String("/MainApplication"),
>>>                                QLatin1String("org.kde.KApplication"),
>>>                                QDBusConnection::sessionBus());
>>>         qDebug() << "killing " << service;
>>>         iface->call("quit");
>>>         qDebug() << iface->lastError();                                   
>>>
>>> This code worked until yesterday without any problems.  Yesterday I 
>>> updated to recent dbus svn source and now this code does not work anymore.
>>>
>>> [3804] Debug:killing  "org.kde.kate-4724"
>>> [3804] Debug:QDBusError("org.freedesktop.DBus.Error.UnknownInterface", 
>>> "No such interface 'org.kde.KApplication' at object path 
>>> '/MainApplication'")
>>>
>>> The same behavior could be reproduced with qdbusviewer.
>>>     
>> Did you use the original dbus (without my changes) before yesterday?
>>   
> After digging more into this issue it looks that this problem stays 
> alredy some time
> 
> - at least in the version i tried, 4.0.73,4.0.80, 4.0.83 and  recent svn 
> source some interfaces (org.kde and com.trolltech) in the Object Path 
> /MainApplication are not accessable.
> 
> This problem could be verifed by running the following commands on a 
> command shell
> 
> C:\Programme\kde-4\bin>kdeinit4 --verbose
> kdeinit4: Launched dbus-launch.exe, pid = 2464
> kdeinit4: Launched klauncher, pid = 3964
> create process "C:\Programme\kde-4.0.0\bin\dbus-daemon.exe" 
> "C:\Programme\kde-4.0.0\bin\dbus-daemon.exe"  --session
> org.kde.klauncher is registered in dbus
> kdeinit4: Launched kded4, pid = 1824
> org.kde.kded is registered in dbus
> 
> C:\Programme\kde-4\bin>qdbus
> :1.0
> :1.1
>  org.kde.klauncher
> :1.2
>  org.kde.kded
> :1.4
> org.freedesktop.DBus
> 
> C:\Programme\kde-4\bin>qdbus org.kde.kded
> /
> /MainApplication
> /kbuildsycoca
> /kded
> /modules
> /modules/winstartmenu
> 
> C:\Programme\kde-4\bin>qdbus org.kde.kded /MainApplication
> method void org.kde.KApplication.quit()
> method void org.kde.KApplication.reparseConfiguration()
> method void org.kde.KApplication.updateUserTimestamp()
> method void org.kde.KApplication.updateUserTimestamp(int time)
> property readwrite int com.trolltech.Qt.QApplication.cursorFlashTime
> property readwrite int com.trolltech.Qt.QApplication.doubleClickInterval
> property readwrite QSize com.trolltech.Qt.QApplication.globalStrut
> property readwrite int com.trolltech.Qt.QApplication.keyboardInputInterval
> property readwrite bool com.trolltech.Qt.QApplication.quitOnLastWindowClosed
> property readwrite int com.trolltech.Qt.QApplication.startDragDistance
> property readwrite int com.trolltech.Qt.QApplication.startDragTime
> property readwrite QString com.trolltech.Qt.QApplication.styleSheet
> property readwrite int com.trolltech.Qt.QApplication.wheelScrollLines
> property readwrite QString com.trolltech.Qt.QCoreApplication.applicationName
> property readwrite QString 
> com.trolltech.Qt.QCoreApplication.applicationVersion
> property readwrite QString 
> com.trolltech.Qt.QCoreApplication.organizationDomain
> property readwrite QString 
> com.trolltech.Qt.QCoreApplication.organizationName
> method int org.kde.KUniqueApplication.newInstance()
> method int org.kde.KUniqueApplication.newInstance(QByteArray asn_id)
> method int org.kde.KUniqueApplication.newInstance(QByteArray asn_id, 
> QByteArray args)
> method QDBusVariant org.freedesktop.DBus.Properties.Get(QString 
> interface_name, QString property_name)
> method void org.freedesktop.DBus.Properties.Set(QString interface_name, 
> QString property_name, QDBusVariant value)
> method QString org.freedesktop.DBus.Introspectable.Introspect()
> 
> C:\Programme\kde-4\bin>qdbus org.kde.kded /MainApplication 
> org.freedesktop.DBus.Introspectable.Introspect
> <!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 
> 1.0//EN"
> "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
> <node>
>   <interface name="org.kde.KApplication">
>     <method name="updateUserTimestamp">
>       <arg name="time" type="i" direction="in"/>
>     </method>
>     <method name="updateUserTimestamp">
>     </method>
>     <method name="reparseConfiguration">
>     </method>
>     <method name="quit">
>     </method>
>   </interface>
>   <interface name="com.trolltech.Qt.QApplication">
>     <property name="cursorFlashTime" type="i" access="readwrite"/>
>     <property name="doubleClickInterval" type="i" access="readwrite"/>
>     <property name="keyboardInputInterval" type="i" access="readwrite"/>
>     <property name="wheelScrollLines" type="i" access="readwrite"/>
>     <property name="globalStrut" type="(ii)" access="readwrite">
>       <annotation name="com.trolltech.QtDBus.QtTypeName" value="QSize"/>
>     </property>
>     <property name="startDragTime" type="i" access="readwrite"/>
>     <property name="startDragDistance" type="i" access="readwrite"/>
>     <property name="quitOnLastWindowClosed" type="b" access="readwrite"/>
>     <property name="styleSheet" type="s" access="readwrite"/>
>   </interface>
>   <interface name="com.trolltech.Qt.QCoreApplication">
>     <property name="applicationName" type="s" access="readwrite"/>
>     <property name="applicationVersion" type="s" access="readwrite"/>
>     <property name="organizationName" type="s" access="readwrite"/>
>     <property name="organizationDomain" type="s" access="readwrite"/>
>   </interface>
>   <interface name="org.kde.KUniqueApplication">
>     <method name="newInstance">
>       <arg type="i" direction="out"/>
>       <arg name="asn_id" type="ay" direction="in"/>
>       <arg name="args" type="ay" direction="in"/>
>     </method>
>     <method name="newInstance">
>       <arg type="i" direction="out"/>
>       <arg name="asn_id" type="ay" direction="in"/>
>     </method>
>     <method name="newInstance">
>       <arg type="i" direction="out"/>
>     </method>
>   </interface>
>   <interface name="org.freedesktop.DBus.Properties">
>     <method name="Get">
>       <arg name="interface_name" type="s" direction="in"/>
>       <arg name="property_name" type="s" direction="in"/>
>       <arg name="value" type="v" direction="out"/>
>     </method>
>     <method name="Set">
>       <arg name="interface_name" type="s" direction="in"/>
>       <arg name="property_name" type="s" direction="in"/>
>       <arg name="value" type="v" direction="in"/>
>     </method>
>   </interface>
>   <interface name="org.freedesktop.DBus.Introspectable">
>     <method name="Introspect">
>       <arg name="xml_data" type="s" direction="out"/>
>     </method>
>   </interface>
> </node>
> 
> C:\Programme\kde-4\bin>qdbus org.kde.kded /MainApplication 
> org.kde.KApplication.quit
> Error: org.freedesktop.DBus.Error.UnknownInterface
> No such interface 'org.kde.KApplication' at object path '/MainApplication'
> 
> 
> Does anyone can give me some hints who to find the problem ?
> 
After some debugging I think you can't access methods registered on the 
sesion bus. At least in kded4 this seems to be correct.


Christian

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