content: /*
   * Copyright 2011 The Android Open Source Project
   *
   * 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 fuzion24.device.vulnerability.vulnerabilities.helper;
  
  import android.content.Context;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.lang.reflect.Method;
  
  /**
   * Utilities for accessing /proc filesystem information.
   */
  public class SystemUtils {
      private SystemUtils() {
      }
  
      public static int ProcfindPidFor(String executable) throws IOException {
          File f = new File("/proc");
          for (File d : f.listFiles()) {
              String cmdLineString = d.getAbsolutePath() + "/cmdline";
              File cmdLine = new File(cmdLineString);
              if (cmdLine.exists()) {
                  BufferedReader in = null;
                  try {
                      in = new BufferedReader(new FileReader(cmdLine));
                      String line = in.readLine();
                      if ((line != null) && line.startsWith(executable)) {
                          return Integer.decode(d.getName());
                      }
                  } finally {
                      if (in != null) {
                          in.close();
                      }
                  }
              }
          }
          throw new RuntimeException("should never get here");
      }
  
      //https://stackoverflow.com/questions/2641111/where-is-android-os-systemproperties
      /**
       * Get the value for the given key.
       * @return an empty string if the key isn't found
       * @throws IllegalArgumentException if the key exceeds 32 characters
       */
      public static String propertyGet(Context context, String key) throws IllegalArgumentException {
  
          String ret= "";
  
          try{
  
              ClassLoader cl = context.getClassLoader();
              @SuppressWarnings("rawtypes")
              Class SystemProperties = cl.loadClass("android.os.SystemProperties");
  
              //Parameters Types
              @SuppressWarnings("rawtypes")
              Class[] paramTypes= new Class[1];
              paramTypes[0]= String.class;
  
              Method get = SystemProperties.getMethod("get", paramTypes);
  
              //Parameters
              Object[] params= new Object[1];
              params[0]= new String(key);
  
              ret= (String) get.invoke(SystemProperties, params);
  
          }catch( IllegalArgumentException iAE ){
              throw iAE;
          }catch( Exception e ){
              ret= "";
              //TODO
          }
  
          return ret;
  
      }
  
  }