gdbus-monitor-接口`< none>` [英] gdbus-monitor - interface `<none>`

问题描述

gdbus-monitor中的接口<none>是否输出特殊含义?

使用GDbus创建这样的消息需要什么API调用(g_dbus_connection_register_object不允许将NULL传递为GDBusInterfaceInfo *，并且这似乎是将对象注册到路径的唯一方法) 与

相关: dbus-在接口NULL上将对象注册到远程

解决方案

查看dbus-monitor的dbus - register object to remote on interface NULL

解决方案

Looking into dbus-monitor's source code shows that it occures as soon as DBUS_EXPORT const char * dbus_message_get_interface ( DBusMessage * message ) returns NULL (which is valid!, but not according to the spec which requires minimum one . and two name chunks!! EDIT: A noteable exception are method calls which do not require the interface field of a message to be set http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-types).

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g_dbus_message_new_method_call (...) allows interface_ to be null. But that still only solves half the problems (sender). The receiver method seems to not exist for interface_s being NULL.

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Turns out it is a bug, I did a source code investigation and filed a bug (including fix) https://bugzilla.gnome.org/show_bug.cgi?id=706675

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