com.dirtyunicorns.hfm.mainFragment.java Source code

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Here is the source code for com.dirtyunicorns.hfm.mainFragment.java

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/*
 * Copyright (C) 2013 MazWoz Software
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dirtyunicorns.hfm;

import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Switch;

public class mainFragment extends Fragment {

    private File defHosts;
    private File altHosts;
    private File hosts;
    private SharedPreferences settings;
    @SuppressWarnings("unused")
    private SharedPreferences.Editor editor;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        settings = this.getActivity().getPreferences(Context.MODE_PRIVATE);
        editor = settings.edit();
        defHosts = new File("/etc/hosts.og");
        altHosts = new File("/etc/hosts.alt");
        hosts = new File("/etc/hosts");

        View mainView = inflater.inflate(R.layout.fragment_main, container, false);

        Switch sw = (Switch) mainView.findViewById(R.id.switch1);
        if (settings != null) {
            if (settings.getString("default", null) == "true") {
                sw.setChecked(true);
            } else if (settings.getString("default", null) == null) {
                sw.setChecked(true);
            } else {
                sw.setChecked(false);
            }
        } else {
            sw.setChecked(true);
        }
        sw.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                try {
                    RunAsRoot("mount -o remount, rw /system");
                } catch (IOException e) {
                    e.printStackTrace();
                }

                if (isChecked) {
                    if (hosts.exists() && defHosts.exists()) {
                        try {
                            hosts.delete();
                            copyFiles(defHosts);
                            settings.edit().putString("default", "true").commit();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }

                    }
                } else {
                    if (hosts.exists() && altHosts.exists()) {
                        try {
                            hosts.delete();
                            copyFiles(altHosts);
                            settings.edit().putString("default", "false").commit();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }

            }
        });

        return mainView;
    }

    public void RunAsRoot(String string) throws IOException {
        Process P = Runtime.getRuntime().exec("su");
        DataOutputStream os = new DataOutputStream(P.getOutputStream());
        os.writeBytes(string + "\n");
        os.writeBytes("exit\n");
        os.flush();
    }

    public void copyFiles(File srcFile) throws IOException {
        try {
            RunAsRoot("cp " + srcFile.getAbsolutePath() + " " + hosts.getAbsolutePath());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}