DBUS - 注册对象接口远程NULL

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问题描述

我要处理一个二进制数据DBUS服务/服务器，我需要通过DBUS（会话）来连接。

I have to deal with a binary blob dbus service/server which I need to connect to via dbus (session).

接口的自省是如下（通过 gdbus- codeGEN 获得）。
如果消息已被这就是所谓的远程接收我们的注册功能，远程，所以我们得到通知 MESSAGE_HANDLER 。这作为上，我通过DBUS传递 send_message 命令的响应，但工作（并因此未显示）。

The introspection of the interface is as following (obtained via gdbus-codegen).We register a function to the remote so we get notified if a message has been received by the remote which is called message_handler. That happens as a response on a send_message command which I pass via dbus, but that works (and is thus not shown).

在一个java例如，它通过

In a java example it is done via

dbus_connection.exportObject("/", new DBusInterfaceDerivedClassFoo());

和显示喧嚣为（无接口）MESSAGE_HANDLER ，一切都按预期工作。

and shows in bustle as (no interface) message_handler and everything works as expected.

在裸露的日志说＆LT;没有方式＆gt; 而不是（无接口）

In the bare logs say <none> instead of (no interface).

根据这是怎么引起的事实上， gdbus显示器检测接口是 NULL

According to gdbus-monitor - interface `<none>` this is caused by the fact that gdbus-monitor detects interface being NULL

如何注册/使用导出对象，接口等于NULL GDBus ？

How to register/export a object with interface equal NULL using GDBus?

东西试过到目前为止标记为在code注释：

Things tried so far marked as comments in the code:

code块：

static gchar iface_xml[] = 
"<node name='/'>"
" <interface name='bar.long.long.name.rxobj'>"
"  <method name='message_handler' >"
"   <arg type='s' direction='in'/>"
"  </method>"
"  <method name=isRemote' >"
"   <arg type='b' direction='out'/>"
"  </method>"
" </interface>"
" <interface name='org.freedesktop.DBus.Introspectable'>"
"  <method name='Introspect'>"
"   <arg type='s' direction='out'/>"
"  </method>"
" </interface>"
" <interface name='org.freedesktop.DBus.Peer'>"
"  <method name='Ping'>"
"  </method>"
" </interface>"
"</node>";

GError *error = NULL;

GDBusConnection *con = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
g_assert (!error);

GDBusNodeInfo *node_info = g_dbus_node_info_new_for_xml (iface_xml, &error);
// also tried ...de_info = NULL; // - crash, see below
g_assert (!error);

GDBusInterfaceInfo *interface_info = g_dbus_node_info_lookup_interface (node_info,
                              "bar.long.long.name.rxobj");
// also tried ...okup_interface (node_info, NULL); - obviously wrong
g_assert (interface_info);

guint id = g_dbus_connection_register_object (con,
                  (const gchar*)"/",

             // also tried node_info->interfaces[0]
             // also tried "" - crash
             // also tried "\0" - crash
             // also tried NULL - assert failure
                  interface_info,

                  &vtable, /*we never enter any of the callbacks*/
                  NULL,/*user_data*/
                  (GDestroyNotify)NULL,
                  &error);
g_assert (!error);

GMainLoop *loop = g_main_loop_new (...);
g_main_loop_run (loop);
...

什么，我注释掉不管我从来没有进入了虚函数表指定的回调。

先谢谢您的任何提示。

附加信息：遥控器使用qtdbus据我可以说，如果这样做事情

Additional info: The remote uses qtdbus as far as I can say if that does matter.

接口

DBUS - 注册对象接口远程NULL

问题描述

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