Linux kernel, Android, Golang & Recsys

border@kvbian:~ s$ cat rommanager.sh 
mkdir -p /cache/recovery ; cat /data/data/com.koushikdutta.rommanager/files/extendedcommand > /cache/recovery/extendedcommand ;  rm /cache/recovery/command ; mkdir -p /sdcard/clockworkmod ; echo 1 > /sdcard/clockworkmod/.recoverycheckpoint ;  reboot recovery ;
border@kvbian:~ s$ cat extendedcommand 
ui_print("ROM Manager Version 5.0.0.5");
ui_print("2012年4月18日");
ui_print("Preparing to install ROM...");
assert(install_zip("/sdcard/update/kvbian-rom-signed-20120417-2112.zip"));

    <uses-permission android:name="android.permission.ACCESS_CACHE_FILESYSTEM" />
    <uses-permission android:name="android.permission.REBOOT" />

package com.kvbian.romupdate;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.PowerManager;
import android.os.StrictMode;
import android.util.Log;
import android.widget.TextView;
 
/**
 * @author Jiang Bian
 * mail: borderj@gmail.com
 * blog: http://wifihack.net
 *
 */
public class RomUpdateActivity extends Activity {
    /** Called when the activity is first created. */
 
    /*
     * Android 3.0
     * 测试机器: GT-P7300/GT-P7310
     *  本程序之在 ClockworkMod_Recovery_v5.5.0.4 版本测试过，其他版本没有测试。
     *  ClockworkMod Recovery(CWM) 如果要取消签名验证进行升级，不能使用Android默认的
     *  /cache/recovery/command 文件进行相关的命令。
     *  而是使用 /cache/recovery/extendedcommand 执行相关的升级命令。
     *  
     *  同时要在 /sdcard/clockworkmod/.recoverycheckpoint 文件做相关的标记。
     * 
     * 本文参考: 
     *  1. frameworks/base/core/java/android/os/RecoverySystem.java
     *  2. bootable/recovery/recovery.c
     *  3. RomManager.apk
     */
 
    private static final String TAG = "RomUpdateActivity";
 
    private static final String ROM_DOWNLOAD_URL = "http://192.168.1.66/update.zip";
 
    private static final String ROMPATH = "/sdcard/update.zip";
 
    private static int buffer_size = 1024 * 10;
 
    /** Used to communicate with recovery.  See bootable/recovery/recovery.c. */
    private static File RECOVERY_DIR = new File("/cache/recovery");
    private static File CLOCK_WORK_MOD_DIR = new File("/sdcard/clockworkmod");
 
    private static File CLOCK_WORK_MOD_CHECKPOINT_FILE = new File(CLOCK_WORK_MOD_DIR, ".recoverycheckpoint");
    private static File COMMAND_FILE = new File(RECOVERY_DIR, "command");
    //     // /cache/recovery/extendedcommand
    private static File EXTENDED_FILE = new File(RECOVERY_DIR, "extendedcommand");
    private static File LOG_FILE = new File(RECOVERY_DIR, "log");
 
    /**
     * Reboot into the recovery system with the supplied argument.
     * @throws IOException if something goes wrong.
     *  From: frameworks/base/core/java/android/os/RecoverySystem.java
 
border@kvbian:~ s$ cat rommanager.sh 
mkdir -p /cache/recovery ; cat /data/data/com.koushikdutta.rommanager/files/extendedcommand > /cache/recovery/extendedcommand ;  rm /cache/recovery/command ; mkdir -p /sdcard/clockworkmod ; echo 1 > /sdcard/clockworkmod/.recoverycheckpoint ;  reboot recovery ;
border@kvbian:~ s$ cat extendedcommand 
ui_print("ROM Manager Version 5.0.0.5");
ui_print("2012年4月18日");
ui_print("Preparing to install ROM...");
assert(install_zip("/sdcard/update/kvbian-rom-signed-20120417-2112.zip"));
     */
    private  void bootCommand(Context context) throws IOException {
        RECOVERY_DIR.mkdirs();  // In case we need it
        CLOCK_WORK_MOD_DIR.mkdirs();
 
        EXTENDED_FILE.delete();
        COMMAND_FILE.delete();  // In case it's not writable
        CLOCK_WORK_MOD_CHECKPOINT_FILE.delete();
        LOG_FILE.delete();
 
        Log.v(TAG, "write ClockWorkMod Checkpoint File: " + CLOCK_WORK_MOD_CHECKPOINT_FILE.getAbsolutePath());
        FileWriter checkpoint = new FileWriter(CLOCK_WORK_MOD_CHECKPOINT_FILE);
 
        try {
            checkpoint.write("1");
            checkpoint.write("\n");
        } finally {
            checkpoint.close();
        }
 
        Log.v(TAG, "write Extended Command File: " + EXTENDED_FILE.getAbsolutePath());
        Log.v(TAG, "write Extended Command File args: " + ROMPATH);
        FileWriter command = new FileWriter(EXTENDED_FILE);
 
        try {
            command.write("ui_print(\"ZPad ROM Manager Version:\"); ");
            command.write("\n");
            command.write("ui_print(\"2012.4.18\");");
            command.write("\n");
            command.write("ui_print(\"Preparing to install ROM...\");");
            command.write("\n");
            //assert(install_zip("/sdcard/update/kvbian-rom-signed-20120417-2112.zip"));
            command.write("assert(install_zip(\"" + ROMPATH  + "\"));");
            command.write("\n");
        } finally {
            command.close();
        }
 
        /**
         * boot-recovery
         * recovery
         */
        // Having written the command file, go ahead and reboot
        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        //pm.reboot("recovery");
        pm.reboot("recovery");
    }
 
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                .detectDiskReads().detectDiskWrites().detectNetwork() // or
                                                                      // .detectAll()
                                                                      // for
                                                                      // all
                                                                      // detectable
                                                                      // problems
                .penaltyLog().build());
        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()
                .penaltyLog().penaltyDeath().build());
 
        // getRomFromNet(ROM_DOWNLOAD_URL);
        romUpdate(this);
 
        TextView tv = new TextView(this);
        tv.setText("RomUpdate Version: 1.1 - 2012.4.18");
        setContentView(tv);
    }
 
    public void romUpdate(Context context) {
 
        try {
            bootCommand(context);
 
        } catch (IOException e) {
            Log.v(TAG, e.getMessage());
            e.printStackTrace();
        }
    }
 
    public void getRomFromNet(String romURL) {
 
        try {
            // set the download URL, a url that points to a file on the internet
            // this is the file to be downloaded
            Log.v(TAG, "   -------------  url: " + romURL + " -------------  ");
 
            URL url = new URL(romURL);
 
            // create the new connection
            HttpURLConnection urlConnection = (HttpURLConnection) url
                    .openConnection();
 
            File file = new File(ROMPATH);
 
            // this will be used in reading the data from the internet
            InputStream inputStream = urlConnection.getInputStream();
 
            // this is the total size of the file
            int totalSize = urlConnection.getContentLength();
 
            // variable to store total downloaded bytes
            int downloadedSize = 0;
 
            // create a buffer...
            byte[] buffer = new byte[1024];
            int bufferLength = 0; // used to store a temporary size of the
 
            Log.v(TAG, "Download From [" + romURL + "], Save File To: "
                    + ROMPATH + "]");
 
            FileOutputStream fileOutput = new FileOutputStream(file);
 
            while ((bufferLength = inputStream.read(buffer)) > 0) {
 
                fileOutput.write(buffer, 0, bufferLength);
 
                downloadedSize += bufferLength;
            }
            // close the output stream when done
            fileOutput.close();
            Log.v(TAG, " Save File To: [" + ROMPATH + "]");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
 
    }
 
}