76 lines
2.4 KiB
Java
76 lines
2.4 KiB
Java
/**
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*
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* Copyright 2020 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.stanza_content_encryption.element;
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import java.security.SecureRandom;
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import org.jivesoftware.smack.packet.NamedElement;
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import org.jivesoftware.smack.packet.XmlEnvironment;
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import org.jivesoftware.smack.util.EqualsUtil;
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import org.jivesoftware.smack.util.RandomUtil;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smack.util.XmlStringBuilder;
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public class RandomPaddingAffixElement implements NamedElement, AffixElement {
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private static final int minPaddingLength = 1;
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private static final int maxPaddingLength = 200;
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public static final String ELEMENT = "rpad";
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private final String padding;
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public RandomPaddingAffixElement(String padding) {
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this.padding = StringUtils.escapeForXmlText(
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StringUtils.requireNotNullNorEmpty(padding, "Value of 'rpad' MUST NOT be null nor empty."))
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.toString();
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}
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public RandomPaddingAffixElement() {
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this(StringUtils.randomString(randomPaddingLength(), new SecureRandom()));
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}
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private static int randomPaddingLength() {
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return minPaddingLength + RandomUtil.nextSecureRandomInt(maxPaddingLength - minPaddingLength);
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}
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public String getPadding() {
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return padding;
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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(XmlEnvironment xmlEnvironment) {
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return new XmlStringBuilder(this).rightAngleBracket()
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.append(getPadding())
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.closeElement(this);
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}
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@Override
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public boolean equals(Object obj) {
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return EqualsUtil.equals(this, obj, (e, o) -> e.append(getPadding(), o.getPadding()));
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}
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@Override
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public int hashCode() {
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return getPadding().hashCode();
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}
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}
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