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      1 /**
      2  * Copyright (c) 2013, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.pacprocessor;
     17 
     18 import android.util.Log;
     19 
     20 /**
     21  * @hide
     22  */
     23 public class PacNative {
     24     private static final String TAG = "PacProxy";
     25 
     26     private String mCurrentPac;
     27 
     28     private boolean mIsActive;
     29 
     30     // Only make native calls from inside synchronized blocks.
     31     private native boolean createV8ParserNativeLocked();
     32     private native boolean destroyV8ParserNativeLocked();
     33 
     34     private native boolean setProxyScriptNativeLocked(String script);
     35 
     36     private native String makeProxyRequestNativeLocked(String url, String host);
     37 
     38     static {
     39         System.loadLibrary("jni_pacprocessor");
     40     }
     41 
     42     PacNative() {
     43 
     44     }
     45 
     46     public synchronized boolean startPacSupport() {
     47         if (createV8ParserNativeLocked()) {
     48             Log.e(TAG, "Unable to Create v8 Proxy Parser.");
     49             return true;
     50         }
     51         mIsActive = true;
     52         return false;
     53     }
     54 
     55     public synchronized boolean stopPacSupport() {
     56         if (mIsActive) {
     57             if (destroyV8ParserNativeLocked()) {
     58                 Log.e(TAG, "Unable to Destroy v8 Proxy Parser.");
     59                 return true;
     60             }
     61             mIsActive = false;
     62         }
     63         return false;
     64     }
     65 
     66     public synchronized boolean setCurrentProxyScript(String script) {
     67         if (setProxyScriptNativeLocked(script)) {
     68             Log.e(TAG, "Unable to parse proxy script.");
     69             return true;
     70         }
     71         return false;
     72     }
     73 
     74     public synchronized String makeProxyRequest(String url, String host) {
     75         String ret = makeProxyRequestNativeLocked(url, host);
     76         if ((ret == null) || (ret.length() == 0)) {
     77             Log.e(TAG, "v8 Proxy request failed.");
     78             ret = null;
     79         }
     80         return ret;
     81     }
     82 
     83     public synchronized boolean isActive() {
     84         return mIsActive;
     85     }
     86 }
     87