mirror of
https://codeberg.org/Mercury-IM/Smack
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a6a1142255
there is no reason why we want to store the bytes of the base64 encoded string. Simply store the string itself. Also add a convenience method to get the decoded bytes of the PubKey.
135 lines
3.8 KiB
Java
135 lines
3.8 KiB
Java
/**
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*
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* Copyright 2018 Paul Schaub.
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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 org.jivesoftware.smackx.ox.element;
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import java.util.Date;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.util.Objects;
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import org.jivesoftware.smack.util.XmlStringBuilder;
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import org.jivesoftware.smack.util.stringencoder.Base64;
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/**
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* Class representing a pubkey element which is used to transport OpenPGP public keys.
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*
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* @see <a href="https://xmpp.org/extensions/xep-0373.html#announcing-pubkey">
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* XEP-0373: §4.1 The OpenPGP Public-Key Data Node</a>
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*/
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public class PubkeyElement implements ExtensionElement {
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public static final String NAMESPACE = OpenPgpElement.NAMESPACE;
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public static final String ELEMENT = "pubkey";
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public static final String ATTR_DATE = "date";
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private final PubkeyDataElement dataElement;
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private final Date date;
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public PubkeyElement(PubkeyDataElement dataElement, Date date) {
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this.dataElement = Objects.requireNonNull(dataElement);
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this.date = date;
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}
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/**
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* Return the <data> element containing the base64 encoded public key.
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*
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* @return data element
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*/
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public PubkeyDataElement getDataElement() {
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return dataElement;
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}
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/**
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* Date on which the key was last modified.
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*
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* @return last modification date
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*/
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public Date getDate() {
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return date;
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}
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@Override
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public String getNamespace() {
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return NAMESPACE;
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}
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@Override
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public String getElementName() {
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return ELEMENT;
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}
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@Override
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public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
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XmlStringBuilder xml = new XmlStringBuilder(this)
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.optAttribute(ATTR_DATE, date)
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.rightAngleBracket()
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.append(getDataElement())
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.closeElement(this);
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return xml;
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}
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/**
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* Element that contains the base64 encoded public key.
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*/
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public static class PubkeyDataElement implements ExtensionElement {
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public static final String ELEMENT = "data";
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private final String b64Data;
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public PubkeyDataElement(String b64Data) {
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this.b64Data = Objects.requireNonNull(b64Data);
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}
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/**
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* Base64 encoded public key.
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*
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* @return the base64 encoded version of the public key.
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*/
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public String getB64Data() {
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return b64Data;
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}
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private transient byte[] pubKeyBytesCache;
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public byte[] getPubKeyBytes() {
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if (pubKeyBytesCache == null) {
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pubKeyBytesCache = Base64.decode(b64Data);
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}
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return pubKeyBytesCache.clone();
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}
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@Override
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public String getElementName() {
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return ELEMENT;
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}
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@Override
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public String getNamespace() {
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return NAMESPACE;
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}
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@Override
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public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
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XmlStringBuilder xml = new XmlStringBuilder(this, enclosingNamespace)
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.rightAngleBracket()
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.append(b64Data)
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.closeElement(this);
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return xml;
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}
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}
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}
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