Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright 2015, 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 | |
| 17 | package com.android.server.wm; |
| 18 | |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 19 | import android.app.ActivityManager; |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 20 | import android.content.ClipData; |
| 21 | import android.net.Uri; |
| 22 | import android.os.Binder; |
| 23 | import android.os.IBinder; |
| 24 | import android.os.RemoteException; |
| 25 | |
Vladislav Kaznacheev | 377c328 | 2016-04-20 14:22:23 -0700 | [diff] [blame] | 26 | import com.android.internal.view.IDragAndDropPermissions; |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 27 | |
| 28 | import java.util.ArrayList; |
| 29 | |
Vladislav Kaznacheev | 377c328 | 2016-04-20 14:22:23 -0700 | [diff] [blame] | 30 | class DragAndDropPermissionsHandler extends IDragAndDropPermissions.Stub |
| 31 | implements IBinder.DeathRecipient { |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 32 | |
| 33 | private final int mSourceUid; |
| 34 | private final String mTargetPackage; |
| 35 | private final int mMode; |
| 36 | private final int mSourceUserId; |
| 37 | private final int mTargetUserId; |
| 38 | |
| 39 | private final ArrayList<Uri> mUris = new ArrayList<Uri>(); |
| 40 | |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 41 | private IBinder mActivityToken = null; |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 42 | private IBinder mPermissionOwnerToken = null; |
Vladislav Kaznacheev | 87c60d6 | 2016-07-21 15:25:12 -0700 | [diff] [blame] | 43 | private IBinder mTransientToken = null; |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 44 | |
Vladislav Kaznacheev | 377c328 | 2016-04-20 14:22:23 -0700 | [diff] [blame] | 45 | DragAndDropPermissionsHandler(ClipData clipData, int sourceUid, String targetPackage, int mode, |
| 46 | int sourceUserId, int targetUserId) { |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 47 | mSourceUid = sourceUid; |
| 48 | mTargetPackage = targetPackage; |
| 49 | mMode = mode; |
| 50 | mSourceUserId = sourceUserId; |
| 51 | mTargetUserId = targetUserId; |
| 52 | |
| 53 | clipData.collectUris(mUris); |
| 54 | } |
| 55 | |
| 56 | @Override |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 57 | public void take(IBinder activityToken) throws RemoteException { |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 58 | if (mActivityToken != null || mPermissionOwnerToken != null) { |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 59 | return; |
| 60 | } |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 61 | mActivityToken = activityToken; |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 62 | |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 63 | // Will throw if Activity is not found. |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 64 | IBinder permissionOwner = ActivityManager.getService(). |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 65 | getUriPermissionOwnerForActivity(mActivityToken); |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 66 | |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 67 | doTake(permissionOwner); |
| 68 | } |
| 69 | |
| 70 | private void doTake(IBinder permissionOwner) throws RemoteException { |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 71 | long origId = Binder.clearCallingIdentity(); |
| 72 | try { |
| 73 | for (int i = 0; i < mUris.size(); i++) { |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 74 | ActivityManager.getService().grantUriPermissionFromOwner( |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 75 | permissionOwner, mSourceUid, mTargetPackage, mUris.get(i), mMode, |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 76 | mSourceUserId, mTargetUserId); |
| 77 | } |
| 78 | } finally { |
| 79 | Binder.restoreCallingIdentity(origId); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | @Override |
Vladislav Kaznacheev | 87c60d6 | 2016-07-21 15:25:12 -0700 | [diff] [blame] | 84 | public void takeTransient(IBinder transientToken) throws RemoteException { |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 85 | if (mActivityToken != null || mPermissionOwnerToken != null) { |
| 86 | return; |
| 87 | } |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 88 | mPermissionOwnerToken = ActivityManager.getService().newUriPermissionOwner("drop"); |
Vladislav Kaznacheev | 87c60d6 | 2016-07-21 15:25:12 -0700 | [diff] [blame] | 89 | mTransientToken = transientToken; |
| 90 | mTransientToken.linkToDeath(this, 0); |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 91 | |
| 92 | doTake(mPermissionOwnerToken); |
| 93 | } |
| 94 | |
| 95 | @Override |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 96 | public void release() throws RemoteException { |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 97 | if (mActivityToken == null && mPermissionOwnerToken == null) { |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 98 | return; |
| 99 | } |
| 100 | |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 101 | IBinder permissionOwner = null; |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 102 | if (mActivityToken != null) { |
| 103 | try { |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 104 | permissionOwner = ActivityManager.getService(). |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 105 | getUriPermissionOwnerForActivity(mActivityToken); |
| 106 | } catch (Exception e) { |
| 107 | // Activity is destroyed, permissions already revoked. |
| 108 | return; |
| 109 | } finally { |
| 110 | mActivityToken = null; |
| 111 | } |
| 112 | } else { |
| 113 | permissionOwner = mPermissionOwnerToken; |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 114 | mPermissionOwnerToken = null; |
Vladislav Kaznacheev | 87c60d6 | 2016-07-21 15:25:12 -0700 | [diff] [blame] | 115 | mTransientToken.unlinkToDeath(this, 0); |
| 116 | mTransientToken = null; |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 117 | } |
| 118 | |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 119 | for (int i = 0; i < mUris.size(); ++i) { |
Sudheer Shanka | dc589ac | 2016-11-10 15:30:17 -0800 | [diff] [blame] | 120 | ActivityManager.getService().revokeUriPermissionFromOwner( |
Vladislav Kaznacheev | b23a757 | 2015-12-18 12:23:43 -0800 | [diff] [blame] | 121 | permissionOwner, mUris.get(i), mMode, mSourceUserId); |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 122 | } |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 123 | } |
Vladislav Kaznacheev | c14df8e | 2016-01-22 11:49:13 -0800 | [diff] [blame] | 124 | |
| 125 | @Override |
| 126 | public void binderDied() { |
| 127 | try { |
| 128 | release(); |
| 129 | } catch (RemoteException e) { |
| 130 | // Cannot happen, local call. |
| 131 | } |
| 132 | } |
Vladislav Kaznacheev | 9149d2b | 2015-12-15 12:16:28 -0800 | [diff] [blame] | 133 | } |