Android中部署自己的su

本人博客原文

首先把你的自己的su的放到Android應用程序工程的assets目錄，為了和系統的su區分，我自己的su文件叫做sur。

另外我這裡沒有考慮x86架構的cpu的手機。 廢話不多說，直接上代碼吧！ Util.java文件

package cdut.robin.root.utils;
import java.io.DataOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;
import ledroid.nac.NacShellCommand;

import android.content.Context;import android.util.Log;
public class Util {    private static String getDeployMySuShellScript(String localSuPath) {        StringBuffer strBuffer = new StringBuffer();        strBuffer.append("mount -o remount,rw " + MountPoint.getDeviceName("/system") + " /system");        strBuffer.append("\n");        strBuffer.append("mount -o remount,rw /system /system");        strBuffer.append("\n");        strBuffer.append("cat ").append(localSuPath).append(">" + kSysSuPath);        strBuffer.append("\n");        strBuffer.append("chown 0:0 " + kSysSuPath);        strBuffer.append("\n");        strBuffer.append("chmod 6777 " + kSysSuPath);        strBuffer.append("\n");        strBuffer.append("mount -o remount,ro " + MountPoint.getDeviceName("/system") + " /system");        strBuffer.append("\n");        strBuffer.append("mount -o remount,ro /system /system");        strBuffer.append("\n");        return strBuffer.toString();    }
    final static String kSysSuPath = "/system/xbin/sur";
    private static boolean isMySuExists() {        return new File(kSysSuPath).exists();    }
    private static boolean writeMySu(Context context) {        Process processShell = null;        DataOutputStream osShell = null;        String mySuTempPath = context.getFilesDir().getPath() + "/sur";        File file = new File(mySuTempPath);        if (file.exists()) {            file.delete();        }        InputStream open = null;        FileOutputStream out = null;        try {            open = context.getResources().getAssets().open("sur");            out = context.openFileOutput("sur", Context.MODE_WORLD_WRITEABLE);            byte buffer[] = new byte[4 * 1024];            int len = 0;            while ((len = open.read(buffer)) != -1) {                out.write(buffer, 0, len);            }            out.flush();        } catch (IOException e) {            LogHelper.e("TAG", "errMessage" + e.getMessage());        } finally {            if (out != null) {                try {                    out.close();                    if (open != null) {                        open.close();                    }                } catch (Exception e) {                    LogHelper.e("TAG", "errMessage" + e.getMessage());                }            }        }        Runtime runTime = Runtime.getRuntime();        try {            processShell = runTime.exec("su");            osShell = new DataOutputStream(processShell.getOutputStream());            String str = getDeployMySuShellScript(mySuTempPath);            osShell.writeBytes(str);            osShell.writeBytes("exit\n");            osShell.flush();            processShell.waitFor();        } catch (IOException e) {                        e.printStackTrace();        } catch (InterruptedException e) {                      e.printStackTrace();        } finally {            if (processShell != null) {                try {                    processShell.destroy();                } catch (Exception e) {                    // e.printStackTrace();                }                processShell = null;            }            if (osShell != null) {                try {                    osShell.close();                    osShell = null;                } catch (IOException e1) {                    // e1.printStackTrace();                }            }        }        return new File(kSysSuPath).exists();    }
    public static boolean doSthBySu(Context context) {        if (!isMySuExists()) {            boolean res = writeMySu(context);            if (res) {                Log.i("robin", "deploy My Su success!");            }            else            {                Log.i("robin", "deploy My Su fail!");            }        } else{            Log.i("robin", "My su exsit!");        }        Process processShell = null;        DataOutputStream osShell = null;        //do something here by su        try {            Runtime runTime = Runtime.getRuntime();            processShell = runTime.exec("sur");            osShell = new DataOutputStream(processShell.getOutputStream());            String str = getBussinessShellScript();            osShell.writeBytes(str);            osShell.writeBytes("exit\n");            osShell.flush();        } catch (Exception e) {            e.printStackTrace();            return false;        } finally {            if (processShell != null) {                try {                    processShell.destroy();                } catch (Exception e) {                     e.printStackTrace();                }                processShell = null;            }            if (osShell != null) {                try {                    osShell.close();                    osShell = null;                } catch (IOException e1) {                    // e1.printStackTrace();                }            }        }        return true;    }
    public static String getBussinessShellScript() {        return "echo hello";    }}

MountPoint.java文件

package cdut.robin.root.utils;
import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.HashMap;import java.util.List;
public final class MountPoint {    private static HashMap MOUNT_POINT_CACH = new HashMap(10);    private static HashMap> DEVICE_CACH = new HashMap(10);
    public static boolean isMountPoint(String mountPoint) {        return getDeviceName(mountPoint) != null;    }
    public static String getDeviceName(String mountPoint) {        if (mountPoint == null) {            return null;        }
        String deviceName = null;        if (MOUNT_POINT_CACH.containsKey(mountPoint)) {            deviceName = (String) MOUNT_POINT_CACH.get(mountPoint);        }
        return deviceName;    }
    public static boolean hasMultiMountPoint(String deviceName) {        List list = getMountPoints(deviceName);
        return (list != null) && (list.size() > 1);    }
    public static List getMountPoints(String deviceName) {        return (List) DEVICE_CACH.get(deviceName);    }
    static {        BufferedReader mountPointReader = null;        try {            mountPointReader = new BufferedReader(new InputStreamReader(new FileInputStream(new File("/proc/mounts"))));            String buffer = null;            while ((buffer = mountPointReader.readLine()) != null) {                MOUNT_POINT_CACH.put(buffer.split(" ")[1], buffer.split(" ")[0]);                List list = (List) DEVICE_CACH.get(buffer.split(" ")[0]);                if (list == null) {                    list = new ArrayList(1);                }                list.add(buffer.split(" ")[1]);                DEVICE_CACH.put(buffer.split(" ")[0], list);            }        } catch (IOException e) {        } finally {            try {                if (mountPointReader != null)                    mountPointReader.close();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }    }}

結束！