Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 | |
Kevin Chyn | 2ffadb3 | 2018-06-19 11:29:38 -0700 | [diff] [blame] | 17 | package com.android.server.biometrics.face; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 18 | |
| 19 | import android.content.Context; |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 20 | import android.hardware.biometrics.BiometricAuthenticator; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 21 | import android.hardware.face.Face; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 22 | import android.util.AtomicFile; |
| 23 | import android.util.Slog; |
| 24 | import android.util.Xml; |
| 25 | |
Andreas Gampe | d6d4206 | 2018-07-20 13:08:21 -0700 | [diff] [blame] | 26 | import com.android.internal.annotations.GuardedBy; |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 27 | import com.android.server.biometrics.common.BiometricUserState; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 28 | |
| 29 | import libcore.io.IoUtils; |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 30 | |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 31 | import org.xmlpull.v1.XmlPullParser; |
| 32 | import org.xmlpull.v1.XmlPullParserException; |
| 33 | import org.xmlpull.v1.XmlSerializer; |
| 34 | |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 35 | import java.io.FileOutputStream; |
| 36 | import java.io.IOException; |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 37 | import java.util.ArrayList; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 38 | |
| 39 | |
| 40 | /** |
| 41 | * Class managing the set of faces per user across device reboots. |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 42 | * @hide |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 43 | */ |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 44 | public class FaceUserState extends BiometricUserState { |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 45 | |
| 46 | private static final String TAG = "FaceState"; |
| 47 | private static final String FACE_FILE = "settings_face.xml"; |
| 48 | |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 49 | private static final String TAG_FACES = "faces"; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 50 | private static final String TAG_FACE = "face"; |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 51 | private static final String ATTR_NAME = "name"; |
| 52 | private static final String ATTR_FACE_ID = "faceId"; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 53 | private static final String ATTR_DEVICE_ID = "deviceId"; |
| 54 | |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 55 | public FaceUserState(Context ctx, int userId) { |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 56 | super(ctx, userId); |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | protected String getBiometricsTag() { |
| 61 | return TAG_FACES; |
| 62 | } |
| 63 | |
| 64 | @Override |
| 65 | protected String getBiometricFile() { |
| 66 | return FACE_FILE; |
| 67 | } |
| 68 | |
| 69 | @Override |
| 70 | protected int getNameTemplateResource() { |
| 71 | return com.android.internal.R.string.face_name_template; |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public void addBiometric(BiometricAuthenticator.Identifier identifier) { |
| 76 | if (identifier instanceof Face) { |
| 77 | super.addBiometric(identifier); |
| 78 | } else { |
| 79 | Slog.w(TAG, "Attempted to add non-face identifier"); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 80 | } |
| 81 | } |
| 82 | |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 83 | @Override |
| 84 | protected ArrayList getCopy(ArrayList array) { |
| 85 | ArrayList<Face> result = new ArrayList<>(array.size()); |
| 86 | for (int i = 0; i < array.size(); i++) { |
| 87 | Face f = (Face) array.get(i); |
Kevin Chyn | b528d69 | 2018-07-20 11:53:14 -0700 | [diff] [blame] | 88 | result.add(new Face(f.getName(), f.getBiometricId(), f.getDeviceId())); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 89 | } |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 90 | return result; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 91 | } |
| 92 | |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 93 | @Override |
| 94 | protected void doWriteState() { |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 95 | AtomicFile destination = new AtomicFile(mFile); |
| 96 | |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 97 | ArrayList<Face> faces; |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 98 | |
| 99 | synchronized (this) { |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 100 | faces = getCopy(mBiometrics); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | FileOutputStream out = null; |
| 104 | try { |
| 105 | out = destination.startWrite(); |
| 106 | |
| 107 | XmlSerializer serializer = Xml.newSerializer(); |
| 108 | serializer.setOutput(out, "utf-8"); |
| 109 | serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); |
| 110 | serializer.startDocument(null, true); |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 111 | serializer.startTag(null, TAG_FACES); |
| 112 | |
| 113 | final int count = faces.size(); |
| 114 | for (int i = 0; i < count; i++) { |
| 115 | Face f = faces.get(i); |
| 116 | serializer.startTag(null, TAG_FACE); |
Kevin Chyn | b528d69 | 2018-07-20 11:53:14 -0700 | [diff] [blame] | 117 | serializer.attribute(null, ATTR_FACE_ID, Integer.toString(f.getBiometricId())); |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 118 | serializer.attribute(null, ATTR_NAME, f.getName().toString()); |
| 119 | serializer.attribute(null, ATTR_DEVICE_ID, Long.toString(f.getDeviceId())); |
| 120 | serializer.endTag(null, TAG_FACE); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 121 | } |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 122 | |
| 123 | serializer.endTag(null, TAG_FACES); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 124 | serializer.endDocument(); |
| 125 | destination.finishWrite(out); |
| 126 | |
| 127 | // Any error while writing is fatal. |
| 128 | } catch (Throwable t) { |
| 129 | Slog.wtf(TAG, "Failed to write settings, restoring backup", t); |
| 130 | destination.failWrite(out); |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 131 | throw new IllegalStateException("Failed to write faces", t); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 132 | } finally { |
| 133 | IoUtils.closeQuietly(out); |
| 134 | } |
| 135 | } |
| 136 | |
Andreas Gampe | d6d4206 | 2018-07-20 13:08:21 -0700 | [diff] [blame] | 137 | @GuardedBy("this") |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 138 | @Override |
| 139 | protected void parseBiometricsLocked(XmlPullParser parser) |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 140 | throws IOException, XmlPullParserException { |
| 141 | final int outerDepth = parser.getDepth(); |
| 142 | int type; |
| 143 | while ((type = parser.next()) != XmlPullParser.END_DOCUMENT |
| 144 | && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { |
| 145 | if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { |
| 146 | continue; |
| 147 | } |
| 148 | |
| 149 | String tagName = parser.getName(); |
| 150 | if (tagName.equals(TAG_FACE)) { |
Kevin Chyn | a56dff7 | 2018-06-19 18:41:12 -0700 | [diff] [blame] | 151 | String name = parser.getAttributeValue(null, ATTR_NAME); |
| 152 | String faceId = parser.getAttributeValue(null, ATTR_FACE_ID); |
| 153 | String deviceId = parser.getAttributeValue(null, ATTR_DEVICE_ID); |
| 154 | mBiometrics.add(new Face(name, Integer.parseInt(faceId), Integer.parseInt(deviceId))); |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 155 | } |
| 156 | } |
| 157 | } |
Gilad Bretter | cb51b8b | 2018-03-22 17:04:51 +0200 | [diff] [blame] | 158 | } |