网络链路实现为Android NDK [英] Netlink implementation for the Android NDK

问题描述

我有类似的任务要求为的此链接。。被动监测的Andr​​oid插座。一种方法是解析的/ proc /净/ {TCP，UDP，...}表。但是，我们必须继续不断地阅读继续监测;这是没有效率的方法。因为这将是一个移动装置的应用程序，它会因为它需要的CPU时间上监视保持为时间间隔（例如1秒）吃起来电池

I have a requirement for similar task as mentioned in this link.. Passive monitoring of sockets in Android. One way is parsing the /proc/net/{tcp,udp,...} tables. But we have to keep on reading continuously for keep on monitoring; which is not efficient way. As it will be a mobile device app, it will eat up the battery as it requires CPU Time for keep on monitoring for time interval (say 1 sec).

不过，我要寻找一个基于事件的方法。当我用Google搜索差不多，我NETLINK结束了监测插座。但我观察到的Andr​​oid NDK没有为支撑

But, I am looking for an event based approach. As I googled about the same, I ended with NETLINK for monitoring the sockets. But I observe that Android NDK doesn't have support for the

#include <linux/sock_diag.h>
#include <linux/inet_diag.h>
#include <linux/unix_diag.h>
#include <linux/packet_diag.h>
#include <linux/netlink_diag.h>

在是否使用Android的NETLINK监测INET套接字人试过？如果是的话请您分享的信息。

Does anyone tried using NETLINK in Android for monitoring the INET sockets? If so please share the information.

感谢。

更新：
我试图复制粘贴在JNI文件夹中的上述文件，并使用NDK的构建建。建筑是成功的，也是在运行时没有崩溃。但是，套接字创建类型

UPDATE: I tried copy pasting the above mentioned files in the "jni" folder and built using ndk-build. Building was successful and also no crashes at the runtime. But, socket creation of type

socket(AF_NETLINK, SOCK_DGRAM, NETLINK_INET_DIAG)

与错误EACCES失败（13） - 权限创建指定类型和/或协议的插座被拒绝

is failing with error EACCES(13) - Permission to create a socket of the specified type and/or protocol is denied.

任何建议如何进一步开展？

Any suggestions how to proceed further?

推荐答案

在Android的棒棒糖，安全增强的Linux（SELinux）的Andr​​oid中的强制模式已启用。通过观察/看沙盘定义 Android源$ C ​​$ C - 的SE政策在app.te（粘贴下面节选），也不会有任何支持网络链路插槽。

In Android Lollipop, Security Enhanced Linux (SELinux) in Android is enabled in "enforce" mode. By observing/looking at the sandbox definitions Android Source Code - SE Policy of the app.te (Below pasted excerpt), there will not be any supports for the netlink sockets.

# Privileged netlink socket interfaces.

neverallow appdomain

    self:{

        netlink_socket

        netlink_firewall_socket

        netlink_tcpdiag_socket

        netlink_nflog_socket

        netlink_xfrm_socket

        netlink_audit_socket

        netlink_ip6fw_socket

        netlink_dnrt_socket

    } *;

这篇关于网络链路实现为Android NDK的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！