ReadOnlyDeviceException.java
- /**
- *
- * Copyright 2018 Paul Schaub
- *
- * 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 org.jivesoftware.smackx.omemo.exceptions;
- import org.jivesoftware.smackx.omemo.OmemoConfiguration;
- import org.jivesoftware.smackx.omemo.internal.OmemoDevice;
- /**
- * Exception that signals, that a device is considered read-only.
- * Read-only devices are devices that receive OMEMO messages, but do not send any.
- * Those devices are weakening forward secrecy. For that reason, read-only devices are ignored after n messages have
- * been sent without getting a reply back.
- */
- public class ReadOnlyDeviceException extends Exception {
- private static final long serialVersionUID = 1L;
- private final OmemoDevice device;
- /**
- * Constructor.
- * We do not need to hand over the current value of the message counter, as that value will always be equal to
- * {@link OmemoConfiguration#getMaxReadOnlyMessageCount()}. Therefore providing the {@link OmemoDevice} should be
- * enough.
- *
- * @param device device which is considered read-only.
- */
- public ReadOnlyDeviceException(OmemoDevice device) {
- this.device = device;
- }
- /**
- * Return the device in question.
- *
- * @return device that is read-only.
- */
- public OmemoDevice getDevice() {
- return device;
- }
- }