| /* |
| * Copyright (C) 2019 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 android.net.ipsec.ike; |
| |
| import android.annotation.NonNull; |
| import android.net.InetAddresses; |
| import android.net.ipsec.ike.exceptions.AuthenticationFailedException; |
| import android.os.PersistableBundle; |
| |
| import java.net.Inet4Address; |
| import java.net.UnknownHostException; |
| import java.security.cert.X509Certificate; |
| import java.util.Objects; |
| |
| /** IkeIpv4AddrIdentification represents an IKE entity identification based on IPv4 address. */ |
| public final class IkeIpv4AddrIdentification extends IkeIdentification { |
| private static final String IP_ADDRESS_KEY = "ipv4Address"; |
| /** The IPv4 address. */ |
| @NonNull public final Inet4Address ipv4Address; |
| |
| /** |
| * Construct an instance of IkeIpv4AddrIdentification from a decoded inbound packet. |
| * |
| * @param ipv4AddrBytes IPv4 address in byte array. |
| * @throws AuthenticationFailedException for decoding bytes error. |
| * @hide |
| */ |
| public IkeIpv4AddrIdentification(byte[] ipv4AddrBytes) throws AuthenticationFailedException { |
| super(ID_TYPE_IPV4_ADDR); |
| try { |
| ipv4Address = (Inet4Address) (Inet4Address.getByAddress(ipv4AddrBytes)); |
| } catch (ClassCastException | UnknownHostException e) { |
| throw new AuthenticationFailedException(e); |
| } |
| } |
| |
| /** |
| * Construct an instance of {@link IkeIpv4AddrIdentification} with an IPv4 address. |
| * |
| * @param address the IPv4 address. |
| */ |
| public IkeIpv4AddrIdentification(@NonNull Inet4Address address) { |
| super(ID_TYPE_IPV4_ADDR); |
| ipv4Address = address; |
| } |
| |
| /** |
| * Constructs this object by deserializing a PersistableBundle |
| * |
| * @hide |
| */ |
| @NonNull |
| public static IkeIpv4AddrIdentification fromPersistableBundle(@NonNull PersistableBundle in) { |
| Objects.requireNonNull(in, "PersistableBundle is null"); |
| |
| return new IkeIpv4AddrIdentification( |
| (Inet4Address) InetAddresses.parseNumericAddress(in.getString(IP_ADDRESS_KEY))); |
| } |
| /** |
| * Serializes this object to a PersistableBundle |
| * |
| * @hide |
| */ |
| @Override |
| @NonNull |
| public PersistableBundle toPersistableBundle() { |
| final PersistableBundle result = super.toPersistableBundle(); |
| result.putString(IP_ADDRESS_KEY, ipv4Address.getHostAddress()); |
| return result; |
| } |
| |
| /** @hide */ |
| @Override |
| public int hashCode() { |
| // idType is also hashed to prevent collisions with other IkeAuthentication subtypes |
| return Objects.hash(idType, ipv4Address); |
| } |
| |
| /** @hide */ |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof IkeIpv4AddrIdentification)) return false; |
| |
| // idType already verified based on class type; no need to check again. |
| return ipv4Address.equals(((IkeIpv4AddrIdentification) o).ipv4Address); |
| } |
| |
| /** @hide */ |
| @Override |
| public String getIdTypeString() { |
| return "IPv4 Address"; |
| } |
| |
| /** @hide */ |
| @Override |
| public void validateEndCertIdOrThrow(X509Certificate endCert) |
| throws AuthenticationFailedException { |
| // The corresponding SAN type is IP Address as per RFC 7296 |
| validateEndCertSanOrThrow(endCert, SAN_TYPE_IP_ADDRESS, ipv4Address.getHostAddress()); |
| } |
| |
| /** |
| * Retrieve the byte-representation of the IPv4 address. |
| * |
| * @return the byte-representation of the IPv4 address. |
| * @hide |
| */ |
| @Override |
| public byte[] getEncodedIdData() { |
| return ipv4Address.getAddress(); |
| } |
| } |