Andres Morales | 2397427 | 2015-05-14 22:42:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 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.internal.widget; |
| 18 | |
| 19 | import android.os.Parcel; |
| 20 | import android.os.Parcelable; |
Adrian Roos | 7374d3a | 2017-03-31 14:14:53 -0700 | [diff] [blame] | 21 | import android.service.gatekeeper.GateKeeperResponse; |
| 22 | import android.util.Slog; |
Andres Morales | 2397427 | 2015-05-14 22:42:26 -0700 | [diff] [blame] | 23 | |
| 24 | /** |
| 25 | * Response object for a ILockSettings credential verification request. |
| 26 | * @hide |
| 27 | */ |
| 28 | public final class VerifyCredentialResponse implements Parcelable { |
| 29 | |
| 30 | public static final int RESPONSE_ERROR = -1; |
| 31 | public static final int RESPONSE_OK = 0; |
| 32 | public static final int RESPONSE_RETRY = 1; |
| 33 | |
| 34 | public static final VerifyCredentialResponse OK = new VerifyCredentialResponse(); |
| 35 | public static final VerifyCredentialResponse ERROR |
| 36 | = new VerifyCredentialResponse(RESPONSE_ERROR, 0, null); |
Adrian Roos | 7374d3a | 2017-03-31 14:14:53 -0700 | [diff] [blame] | 37 | private static final String TAG = "VerifyCredentialResponse"; |
Andres Morales | 2397427 | 2015-05-14 22:42:26 -0700 | [diff] [blame] | 38 | |
| 39 | private int mResponseCode; |
| 40 | private byte[] mPayload; |
| 41 | private int mTimeout; |
| 42 | |
| 43 | public static final Parcelable.Creator<VerifyCredentialResponse> CREATOR |
| 44 | = new Parcelable.Creator<VerifyCredentialResponse>() { |
| 45 | @Override |
| 46 | public VerifyCredentialResponse createFromParcel(Parcel source) { |
| 47 | int responseCode = source.readInt(); |
| 48 | VerifyCredentialResponse response = new VerifyCredentialResponse(responseCode, 0, null); |
| 49 | if (responseCode == RESPONSE_RETRY) { |
| 50 | response.setTimeout(source.readInt()); |
| 51 | } else if (responseCode == RESPONSE_OK) { |
| 52 | int size = source.readInt(); |
| 53 | if (size > 0) { |
| 54 | byte[] payload = new byte[size]; |
| 55 | source.readByteArray(payload); |
| 56 | response.setPayload(payload); |
| 57 | } |
| 58 | } |
| 59 | return response; |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public VerifyCredentialResponse[] newArray(int size) { |
| 64 | return new VerifyCredentialResponse[size]; |
| 65 | } |
| 66 | |
| 67 | }; |
| 68 | |
| 69 | public VerifyCredentialResponse() { |
| 70 | mResponseCode = RESPONSE_OK; |
| 71 | mPayload = null; |
| 72 | } |
| 73 | |
| 74 | |
| 75 | public VerifyCredentialResponse(byte[] payload) { |
| 76 | mPayload = payload; |
| 77 | mResponseCode = RESPONSE_OK; |
| 78 | } |
| 79 | |
| 80 | public VerifyCredentialResponse(int timeout) { |
| 81 | mTimeout = timeout; |
| 82 | mResponseCode = RESPONSE_RETRY; |
| 83 | mPayload = null; |
| 84 | } |
| 85 | |
| 86 | private VerifyCredentialResponse(int responseCode, int timeout, byte[] payload) { |
| 87 | mResponseCode = responseCode; |
| 88 | mTimeout = timeout; |
| 89 | mPayload = payload; |
| 90 | } |
| 91 | |
| 92 | @Override |
| 93 | public void writeToParcel(Parcel dest, int flags) { |
| 94 | dest.writeInt(mResponseCode); |
| 95 | if (mResponseCode == RESPONSE_RETRY) { |
| 96 | dest.writeInt(mTimeout); |
| 97 | } else if (mResponseCode == RESPONSE_OK) { |
| 98 | if (mPayload != null) { |
| 99 | dest.writeInt(mPayload.length); |
| 100 | dest.writeByteArray(mPayload); |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | @Override |
| 106 | public int describeContents() { |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | public byte[] getPayload() { |
| 111 | return mPayload; |
| 112 | } |
| 113 | |
| 114 | public int getTimeout() { |
| 115 | return mTimeout; |
| 116 | } |
| 117 | |
| 118 | public int getResponseCode() { |
| 119 | return mResponseCode; |
| 120 | } |
| 121 | |
| 122 | private void setTimeout(int timeout) { |
| 123 | mTimeout = timeout; |
| 124 | } |
| 125 | |
| 126 | private void setPayload(byte[] payload) { |
| 127 | mPayload = payload; |
| 128 | } |
Adrian Roos | 7374d3a | 2017-03-31 14:14:53 -0700 | [diff] [blame] | 129 | |
| 130 | public VerifyCredentialResponse stripPayload() { |
| 131 | return new VerifyCredentialResponse(mResponseCode, mTimeout, new byte[0]); |
| 132 | } |
| 133 | |
| 134 | public static VerifyCredentialResponse fromGateKeeperResponse( |
| 135 | GateKeeperResponse gateKeeperResponse) { |
| 136 | VerifyCredentialResponse response; |
| 137 | int responseCode = gateKeeperResponse.getResponseCode(); |
| 138 | if (responseCode == GateKeeperResponse.RESPONSE_RETRY) { |
| 139 | response = new VerifyCredentialResponse(gateKeeperResponse.getTimeout()); |
| 140 | } else if (responseCode == GateKeeperResponse.RESPONSE_OK) { |
| 141 | byte[] token = gateKeeperResponse.getPayload(); |
| 142 | if (token == null) { |
| 143 | // something's wrong if there's no payload with a challenge |
| 144 | Slog.e(TAG, "verifyChallenge response had no associated payload"); |
| 145 | response = VerifyCredentialResponse.ERROR; |
| 146 | } else { |
| 147 | response = new VerifyCredentialResponse(token); |
| 148 | } |
| 149 | } else { |
| 150 | response = VerifyCredentialResponse.ERROR; |
| 151 | } |
| 152 | return response; |
| 153 | } |
Andres Morales | 2397427 | 2015-05-14 22:42:26 -0700 | [diff] [blame] | 154 | } |