130 lines
3.9 KiB
Java
130 lines
3.9 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.net.ipsec.ike;
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import android.annotation.NonNull;
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import android.net.ipsec.ike.exceptions.AuthenticationFailedException;
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import android.os.PersistableBundle;
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import java.nio.charset.Charset;
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import java.security.cert.X509Certificate;
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import java.util.Objects;
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/**
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* IkeFqdnIdentification represents an IKE entity identification based on a fully-qualified domain
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* name (FQDN). An example might be ike.android.com
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*/
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public class IkeFqdnIdentification extends IkeIdentification {
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private static final Charset ASCII = Charset.forName("US-ASCII");
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private static final String FQDN_KEY = "fqdn";
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/** The fully-qualified domain name(FQDN). */
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@NonNull public final String fqdn;
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/**
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* Construct an instance of IkeFqdnIdentification from a decoded inbound packet.
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*
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* @param fqdnBytes FQDN in byte array.
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* @hide
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*/
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public IkeFqdnIdentification(byte[] fqdnBytes) {
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super(ID_TYPE_FQDN);
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fqdn = new String(fqdnBytes, ASCII);
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}
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/**
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* Construct an instance of {@link IkeFqdnIdentification} with a fully-qualified domain name.
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*
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* @param fqdn the fully-qualified domain name (FQDN). Must contain only US-ASCII characters,
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* otherwise an IllegalArugmentException will be thrown.
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*/
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public IkeFqdnIdentification(@NonNull String fqdn) {
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super(ID_TYPE_FQDN);
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if (!ASCII.newEncoder().canEncode(fqdn)) {
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throw new IllegalArgumentException("Non US-ASCII character set used");
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}
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this.fqdn = fqdn;
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}
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/**
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* Constructs this object by deserializing a PersistableBundle
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*
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* @hide
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*/
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@NonNull
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public static IkeFqdnIdentification fromPersistableBundle(@NonNull PersistableBundle in) {
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Objects.requireNonNull(in, "PersistableBundle is null");
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return new IkeFqdnIdentification(in.getString(FQDN_KEY));
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}
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/**
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* Serializes this object to a PersistableBundle
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*
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* @hide
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*/
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@Override
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@NonNull
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public PersistableBundle toPersistableBundle() {
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final PersistableBundle result = super.toPersistableBundle();
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result.putString(FQDN_KEY, fqdn);
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return result;
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}
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/** @hide */
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@Override
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public int hashCode() {
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// idType is also hashed to prevent collisions with other IkeAuthentication subtypes
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return Objects.hash(idType, fqdn);
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}
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/** @hide */
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@Override
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public boolean equals(Object o) {
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if (!(o instanceof IkeFqdnIdentification)) return false;
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// idType already verified based on class type; no need to check again.
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return fqdn.equals(((IkeFqdnIdentification) o).fqdn);
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}
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/** @hide */
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@Override
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public String getIdTypeString() {
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return "FQDN";
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}
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/** @hide */
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@Override
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public void validateEndCertIdOrThrow(X509Certificate endCert)
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throws AuthenticationFailedException {
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// The corresponding SAN type is DNS Name as per RFC 7296
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validateEndCertSanOrThrow(endCert, SAN_TYPE_DNS, fqdn);
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}
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/**
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* Retrieve the byte-representation of the FQDN.
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*
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* @return the byte-representation of the FQDN.
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* @hide
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*/
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@Override
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public byte[] getEncodedIdData() {
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return fqdn.getBytes(ASCII);
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}
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}
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