| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.internal.widget; |
| |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.service.gatekeeper.GateKeeperResponse; |
| import android.util.Slog; |
| |
| /** |
| * Response object for a ILockSettings credential verification request. |
| * @hide |
| */ |
| public final class VerifyCredentialResponse implements Parcelable { |
| |
| public static final int RESPONSE_ERROR = -1; |
| public static final int RESPONSE_OK = 0; |
| public static final int RESPONSE_RETRY = 1; |
| |
| public static final VerifyCredentialResponse OK = new VerifyCredentialResponse(); |
| public static final VerifyCredentialResponse ERROR |
| = new VerifyCredentialResponse(RESPONSE_ERROR, 0, null); |
| private static final String TAG = "VerifyCredentialResponse"; |
| |
| private int mResponseCode; |
| private byte[] mPayload; |
| private int mTimeout; |
| |
| public static final Parcelable.Creator<VerifyCredentialResponse> CREATOR |
| = new Parcelable.Creator<VerifyCredentialResponse>() { |
| @Override |
| public VerifyCredentialResponse createFromParcel(Parcel source) { |
| int responseCode = source.readInt(); |
| VerifyCredentialResponse response = new VerifyCredentialResponse(responseCode, 0, null); |
| if (responseCode == RESPONSE_RETRY) { |
| response.setTimeout(source.readInt()); |
| } else if (responseCode == RESPONSE_OK) { |
| int size = source.readInt(); |
| if (size > 0) { |
| byte[] payload = new byte[size]; |
| source.readByteArray(payload); |
| response.setPayload(payload); |
| } |
| } |
| return response; |
| } |
| |
| @Override |
| public VerifyCredentialResponse[] newArray(int size) { |
| return new VerifyCredentialResponse[size]; |
| } |
| |
| }; |
| |
| public VerifyCredentialResponse() { |
| mResponseCode = RESPONSE_OK; |
| mPayload = null; |
| } |
| |
| |
| public VerifyCredentialResponse(byte[] payload) { |
| mPayload = payload; |
| mResponseCode = RESPONSE_OK; |
| } |
| |
| public VerifyCredentialResponse(int timeout) { |
| mTimeout = timeout; |
| mResponseCode = RESPONSE_RETRY; |
| mPayload = null; |
| } |
| |
| private VerifyCredentialResponse(int responseCode, int timeout, byte[] payload) { |
| mResponseCode = responseCode; |
| mTimeout = timeout; |
| mPayload = payload; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeInt(mResponseCode); |
| if (mResponseCode == RESPONSE_RETRY) { |
| dest.writeInt(mTimeout); |
| } else if (mResponseCode == RESPONSE_OK) { |
| if (mPayload != null) { |
| dest.writeInt(mPayload.length); |
| dest.writeByteArray(mPayload); |
| } else { |
| dest.writeInt(0); |
| } |
| } |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| public byte[] getPayload() { |
| return mPayload; |
| } |
| |
| public int getTimeout() { |
| return mTimeout; |
| } |
| |
| public int getResponseCode() { |
| return mResponseCode; |
| } |
| |
| private void setTimeout(int timeout) { |
| mTimeout = timeout; |
| } |
| |
| private void setPayload(byte[] payload) { |
| mPayload = payload; |
| } |
| |
| public VerifyCredentialResponse stripPayload() { |
| return new VerifyCredentialResponse(mResponseCode, mTimeout, new byte[0]); |
| } |
| |
| public static VerifyCredentialResponse fromGateKeeperResponse( |
| GateKeeperResponse gateKeeperResponse) { |
| VerifyCredentialResponse response; |
| int responseCode = gateKeeperResponse.getResponseCode(); |
| if (responseCode == GateKeeperResponse.RESPONSE_RETRY) { |
| response = new VerifyCredentialResponse(gateKeeperResponse.getTimeout()); |
| } else if (responseCode == GateKeeperResponse.RESPONSE_OK) { |
| byte[] token = gateKeeperResponse.getPayload(); |
| if (token == null) { |
| // something's wrong if there's no payload with a challenge |
| Slog.e(TAG, "verifyChallenge response had no associated payload"); |
| response = VerifyCredentialResponse.ERROR; |
| } else { |
| response = new VerifyCredentialResponse(token); |
| } |
| } else { |
| response = VerifyCredentialResponse.ERROR; |
| } |
| return response; |
| } |
| } |