Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2014 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 | |
Jim Miller | ebbf205 | 2015-03-31 17:24:34 -0700 | [diff] [blame] | 17 | package android.hardware.fingerprint; |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 18 | |
| 19 | import android.content.ContentResolver; |
| 20 | import android.provider.Settings; |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 21 | import android.text.TextUtils; |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 22 | import android.util.Log; |
| 23 | |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 24 | import com.android.internal.util.ArrayUtils; |
| 25 | |
| 26 | import java.util.ArrayList; |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 27 | import java.util.Arrays; |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 28 | import java.util.List; |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 29 | |
Jim Miller | 777f5b2 | 2014-08-25 15:03:50 -0700 | [diff] [blame] | 30 | /** |
| 31 | * Utility class for dealing with fingerprints and fingerprint settings. |
| 32 | * @hide |
| 33 | */ |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 34 | public |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 35 | class FingerprintUtils { |
| 36 | private static final boolean DEBUG = true; |
| 37 | private static final String TAG = "FingerprintUtils"; |
| 38 | |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 39 | private static int[] toIntArray(List<Integer> list) { |
| 40 | if (list == null) { |
| 41 | return null; |
| 42 | } |
| 43 | int[] arr = new int[list.size()]; |
| 44 | int i = 0; |
| 45 | for (int elem : list) { |
| 46 | arr[i] = elem; |
| 47 | i++; |
| 48 | } |
| 49 | return arr; |
| 50 | } |
| 51 | |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 52 | public static int[] getFingerprintIdsForUser(ContentResolver res, int userId) { |
| 53 | String fingerIdsRaw = Settings.Secure.getStringForUser(res, |
| 54 | Settings.Secure.USER_FINGERPRINT_IDS, userId); |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 55 | ArrayList<Integer> tmp = new ArrayList<Integer>(); |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 56 | if (!TextUtils.isEmpty(fingerIdsRaw)) { |
| 57 | String[] fingerStringIds = fingerIdsRaw.replace("[","").replace("]","").split(", "); |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 58 | int length = fingerStringIds.length; |
| 59 | for (int i = 0; i < length; i++) { |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 60 | try { |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 61 | tmp.add(Integer.decode(fingerStringIds[i])); |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 62 | } catch (NumberFormatException e) { |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 63 | if (DEBUG) Log.w(TAG, "Error parsing finger id: '" + fingerStringIds[i] + "'"); |
Jim Miller | a7596147 | 2014-06-06 15:00:49 -0700 | [diff] [blame] | 64 | } |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 65 | } |
| 66 | } |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 67 | return toIntArray(tmp); |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 68 | } |
| 69 | |
Jim Miller | 9f0753f | 2015-03-23 23:59:22 -0700 | [diff] [blame] | 70 | public static void addFingerprintIdForUser(ContentResolver res, int fingerId, int userId) { |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 71 | // FingerId 0 has special meaning. |
| 72 | if (fingerId == 0) { |
| 73 | Log.w(TAG, "Tried to add fingerId 0"); |
| 74 | return; |
| 75 | } |
| 76 | |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 77 | int[] fingerIds = getFingerprintIdsForUser(res, userId); |
| 78 | |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 79 | // Don't allow dups |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 80 | if (ArrayUtils.contains(fingerIds, fingerId)) { |
| 81 | Log.w(TAG, "finger already added " + fingerId); |
| 82 | return; |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 83 | } |
| 84 | int[] newList = Arrays.copyOf(fingerIds, fingerIds.length + 1); |
| 85 | newList[fingerIds.length] = fingerId; |
| 86 | Settings.Secure.putStringForUser(res, Settings.Secure.USER_FINGERPRINT_IDS, |
| 87 | Arrays.toString(newList), userId); |
| 88 | } |
| 89 | |
| 90 | public static boolean removeFingerprintIdForUser(int fingerId, ContentResolver res, int userId) |
| 91 | { |
| 92 | // FingerId 0 has special meaning. The HAL layer is supposed to remove each finger one |
| 93 | // at a time and invoke notify() for each fingerId. If we get called with 0 here, it means |
| 94 | // something bad has happened. |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 95 | if (fingerId == 0) throw new IllegalArgumentException("fingerId can't be 0"); |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 96 | |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 97 | final int[] fingerIds = getFingerprintIdsForUser(res, userId); |
| 98 | if (ArrayUtils.contains(fingerIds, fingerId)) { |
| 99 | final int[] result = ArrayUtils.removeInt(fingerIds, fingerId); |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 100 | Settings.Secure.putStringForUser(res, Settings.Secure.USER_FINGERPRINT_IDS, |
Jim Miller | ba67aee | 2015-02-20 16:21:26 -0800 | [diff] [blame] | 101 | Arrays.toString(result), userId); |
Jim Miller | 08fa40c | 2014-04-29 18:18:47 -0700 | [diff] [blame] | 102 | return true; |
| 103 | } |
| 104 | return false; |
| 105 | } |
| 106 | |
| 107 | }; |
| 108 | |