InjectConfig.java

package com.introspy.config;

import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;

public class InjectConfig {
	
	private static String _TAG = "IntrospyGUI";
	
	private static InjectConfig _instance = null;
	
	protected InjectConfig() {
	}
	static InjectConfig getInstance() {
		if (_instance == null)
			_instance = new InjectConfig();
		return _instance;
	}
	
	public String getHookTypesFromPrefs(Context context) {
		String[] hookTypes = HookTypes.getHookTypes();
		SharedPreferences sp = 
				context.getSharedPreferences("HookTypes", 0);
		String ret = "";
		
    	for (int i = 0; i < hookTypes.length; i++) {
    		if (sp.getBoolean(hookTypes[i], false)) {
    			ret += hookTypes[i];
    			ret += ",";
    		}
    	}
    	
    	ret = ret.substring(0, ret.length() - 1);
//    	ret += "\n";
		return ret;
	}
	
	public void enableApp(String appDir, Context context) {
		String path = appDir + "/introspy.config";
		_command += "su -c echo '" + getHookTypesFromPrefs(context) + "' > " + path + " ; su -c chmod 664 " + path + " ; ";
	}
	
	public void disableApp(String appDir) {
		String path = appDir + "/introspy.config";
		_command += "su -c rm " + path + " ; ";
	}
	
	private String _command = "";
	
	public Boolean commit() {
		if (_command.isEmpty())
			return false;
		Log.i(_TAG, _command);
		try {
			Runtime.getRuntime().exec(_command);
		} catch (Exception e) {
			_command = "";
			Log.w(_TAG, "error: this app needs to be root.");
			return false;
		}
		_command = "";
		return true;
	}
	
	public void writeConfig(Boolean enable, String appDir, Context context) { 
		if (enable)
			enableApp(appDir, context);
		else
			disableApp(appDir);
	}
}