Andorid利用sserver/runtime实现java执行linux程序或脚本

方案一：利用sserver

external/server_mount/socket_server.c

#define THE_PORT 8090

方案二：利用runtime

Runtime runtime = Runtime.getRuntime();

Process process = runtime.exec(cmd);

下面介绍可以独立与Android的方案一：

1.sserver部分可以移植出Android部分代码

socket_server.c

#include <stdio.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h> #define THE_PORT 8090#define CLIENT_NUM 10#define BUFFSZ 1024int main(){int socketfd;int clientfd;char buff[BUFFSZ];struct sockaddr_in sa;struct sockaddr_in cliAdd;socketfd = socket(AF_INET, SOCK_STREAM, 0);if(socketfd == -1){printf("socket create error\n");exit(1);}bzero(&sa, sizeof(sa));sa.sin_family = AF_INET;sa.sin_port = htons(THE_PORT);sa.sin_addr.s_addr = htons(INADDR_ANY);bzero(&(sa.sin_zero), 8);if(bind(socketfd, (struct sockaddr *)&sa, sizeof(sa))!= 0){printf("bind failed\n");exit(1);}if(listen(socketfd ,CLIENT_NUM) != 0){printf("listen error\n");exit(1);}else{printf("listening\n");}socklen_t len = sizeof(cliAdd);int closing =0;while( closing == 0 && (clientfd = accept(socketfd, (struct sockaddr *)&cliAdd, &len)) >0 ){int n;while((n = recv(clientfd,buff, BUFFSZ-1,0 )) > 0){printf("received data = %s\n",buff);printf("received bytes = %d\n", n);buff[n] = '\0';proc_cmd(clientfd , buff);if(strcmp(buff, "quit") == 0){//connection closebreak;}else if(strcmp(buff, "close") == 0){//server closeclosing = 1;printf("server is closing\n");break;}}close(clientfd);}close(socketfd);return 0;}void proc_cmd(int sockfd,char buf[]){char cmdbuf[BUFFSZ];char fpath[64] = "/data/mtinfo";FILE *fp;printf("proc_cmd now\n");sprintf(cmdbuf,"%s 2> %s",buf,fpath);if(-1 == system(cmdbuf)){printf("system call failed\n");exit(1);}if((fp = fopen(fpath,"r")) == -1){printf("open file %s failed\n",fpath);exit(1);}if(!fgets(cmdbuf,sizeof(buf),fp))//cmd successed{   printf("----->cmd successed\n");   if(send(sockfd,"ok",2,0)<0)   {perror("send error");exit(1);   }}else//fail{printf("----->cmd fail\n");if(send(sockfd,"fail",4,0)<0){perror("send error");exit(1);}}}

gcc socket_server.c -o server

2.java部分

HelloWorld.java

public class HelloWorld{  public static void main(String args[]){    System.out.println("Hello World!");    RootSeeker.exec("ls");        }}

RootSeeker.java

//package com.android.server.am.utils;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.Socket;//import android.util.Log;public class RootSeeker {private static final String TAG = "RootSeeker";private static final int SOCKET_PORT = 8090;private static final String SOCKET_IP = "127.0.0.1";public static int exec(String cmd) {////Log.d(TAG, "<-----------------in exec() start --------------------->");//Log.d(TAG, "exec cmd: " + cmd);Socket socket;BufferedReader in;PrintWriter out;char []buf = new char[256];int ret = 0;try{socket = new Socket(SOCKET_IP, SOCKET_PORT);in = new BufferedReader(new InputStreamReader(socket.getInputStream()));out = new PrintWriter(socket.getOutputStream(),true);BufferedReader line = new BufferedReader(new InputStreamReader(System.in));out.println(cmd);if (in.read(buf) != -1 && new String(buf).equals(new String("ok")))ret = 0;else ret = -1;//Log.d(TAG, "command execute " + ((ret == 0) ? "ok" : "false") + ", return: -->" +buf);line.close();out.close();in.close();socket.close();return 0;//FIXME}catch (IOException e){//Log.d(TAG, e.toString());}return 0;}public static boolean chmod(String fileName) {String cmd = "chmod 777 " + fileName;System.out.println("cmd =" + cmd);try {Runtime runtime = Runtime.getRuntime();Process process = runtime.exec(cmd);return true;} catch (Exception e) {e.printStackTrace();return false;}}}

javac RootSeeker.java HelloWorld.java

3.运行

一个终端执行./server

另一个终端执行

CLASSPATH=$CLASSPATH:.

echo $CLASSPATH

java HelloWorld

结果分别为：

listeningreceived data = lsreceived bytes = 3proc_cmd nowHelloWorld.class  HelloWorld.java  RootSeeker.class  RootSeeker.java  server  socket_server.c

Hello World!

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