Jason Monk | 9ced3cd | 2013-08-12 16:42:38 -0400 | [diff] [blame] | 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.app.Service; |
| 19 | import android.content.Intent; |
| 20 | import android.os.Binder; |
| 21 | import android.os.IBinder; |
| 22 | import android.os.Process; |
| 23 | import android.os.RemoteException; |
| 24 | import android.util.Log; |
| 25 | |
| 26 | import com.android.net.IProxyService; |
| 27 | |
Jason Monk | 7a6af1c | 2013-08-21 14:08:52 -0400 | [diff] [blame] | 28 | import java.net.MalformedURLException; |
| 29 | import java.net.URL; |
| 30 | |
Jason Monk | 9ced3cd | 2013-08-12 16:42:38 -0400 | [diff] [blame] | 31 | public class PacService extends Service { |
| 32 | private static final String TAG = "PacService"; |
| 33 | |
| 34 | private PacNative mPacNative; |
| 35 | private ProxyServiceStub mStub; |
| 36 | |
| 37 | @Override |
| 38 | public void onCreate() { |
| 39 | super.onCreate(); |
| 40 | if (mPacNative == null) { |
| 41 | mPacNative = new PacNative(); |
| 42 | mStub = new ProxyServiceStub(mPacNative); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public void onDestroy() { |
| 48 | super.onDestroy(); |
| 49 | if (mPacNative != null) { |
| 50 | mPacNative.stopPacSupport(); |
| 51 | mPacNative = null; |
| 52 | mStub = null; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public IBinder onBind(Intent intent) { |
| 58 | if (mPacNative == null) { |
| 59 | mPacNative = new PacNative(); |
| 60 | mStub = new ProxyServiceStub(mPacNative); |
| 61 | } |
| 62 | return mStub; |
| 63 | } |
| 64 | |
| 65 | private static class ProxyServiceStub extends IProxyService.Stub { |
| 66 | private final PacNative mPacNative; |
| 67 | |
| 68 | public ProxyServiceStub(PacNative pacNative) { |
| 69 | mPacNative = pacNative; |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public String resolvePacFile(String host, String url) throws RemoteException { |
Jason Monk | 7a6af1c | 2013-08-21 14:08:52 -0400 | [diff] [blame] | 74 | try { |
| 75 | // Check for characters that could be used for an injection attack. |
| 76 | new URL(url); |
| 77 | for (char c : host.toCharArray()) { |
| 78 | if (!Character.isLetterOrDigit(c) && (c != '.') && (c != '-')) { |
| 79 | throw new RemoteException("Invalid host was passed"); |
| 80 | } |
| 81 | } |
| 82 | return mPacNative.makeProxyRequest(url, host); |
| 83 | } catch (MalformedURLException e) { |
| 84 | throw new RemoteException("Invalid URL was passed"); |
| 85 | } |
Jason Monk | 9ced3cd | 2013-08-12 16:42:38 -0400 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public void setPacFile(String script) throws RemoteException { |
| 90 | if (Binder.getCallingUid() != Process.SYSTEM_UID) { |
| 91 | Log.e(TAG, "Only system user is allowed to call setPacFile"); |
| 92 | throw new SecurityException(); |
| 93 | } |
| 94 | mPacNative.setCurrentProxyScript(script); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public void startPacSystem() throws RemoteException { |
| 99 | if (Binder.getCallingUid() != Process.SYSTEM_UID) { |
| 100 | Log.e(TAG, "Only system user is allowed to call startPacSystem"); |
| 101 | throw new SecurityException(); |
| 102 | } |
| 103 | mPacNative.startPacSupport(); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public void stopPacSystem() throws RemoteException { |
| 108 | if (Binder.getCallingUid() != Process.SYSTEM_UID) { |
| 109 | Log.e(TAG, "Only system user is allowed to call stopPacSystem"); |
| 110 | throw new SecurityException(); |
| 111 | } |
| 112 | mPacNative.stopPacSupport(); |
| 113 | } |
| 114 | } |
| 115 | } |