OmemoBundleVAxolotlProvider.java
- /**
- *
- * Copyright 2017 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.provider;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.IDENTITY_KEY;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEYS;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEY_ID;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEY_PUB;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_ID;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_PUB;
- import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_SIG;
- import java.io.IOException;
- import java.util.HashMap;
- import org.jivesoftware.smack.packet.XmlEnvironment;
- import org.jivesoftware.smack.provider.ExtensionElementProvider;
- import org.jivesoftware.smack.xml.XmlPullParser;
- import org.jivesoftware.smack.xml.XmlPullParserException;
- import org.jivesoftware.smackx.omemo.element.OmemoBundleElement_VAxolotl;
- /**
- * Smack ExtensionProvider that parses OMEMO bundle element into OmemoBundleElement objects.
- *
- * @author Paul Schaub
- */
- public class OmemoBundleVAxolotlProvider extends ExtensionElementProvider<OmemoBundleElement_VAxolotl> {
- @Override
- public OmemoBundleElement_VAxolotl parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException {
- boolean inPreKeys = false;
- int signedPreKeyId = -1;
- String signedPreKey = null;
- String signedPreKeySignature = null;
- String identityKey = null;
- HashMap<Integer, String> preKeys = new HashMap<>();
- outerloop: while (true) {
- XmlPullParser.Event tag = parser.next();
- switch (tag) {
- case START_ELEMENT:
- String name = parser.getName();
- final int attributeCount = parser.getAttributeCount();
- // <signedPreKeyPublic>
- if (name.equals(SIGNED_PRE_KEY_PUB)) {
- for (int i = 0; i < attributeCount; i++) {
- if (parser.getAttributeName(i).equals(SIGNED_PRE_KEY_ID)) {
- int id = Integer.parseInt(parser.getAttributeValue(i));
- signedPreKey = parser.nextText();
- signedPreKeyId = id;
- }
- }
- }
- // <bundleGetSignedPreKeySignature>
- else if (name.equals(SIGNED_PRE_KEY_SIG)) {
- signedPreKeySignature = parser.nextText();
- }
- // <deserializeIdentityKey>
- else if (name.equals(IDENTITY_KEY)) {
- identityKey = parser.nextText();
- }
- // <deserializeECPublicKeys>
- else if (name.equals(PRE_KEYS)) {
- inPreKeys = true;
- }
- // <preKeyPublic preKeyId='424242'>
- else if (inPreKeys && name.equals(PRE_KEY_PUB)) {
- for (int i = 0; i < attributeCount; i++) {
- if (parser.getAttributeName(i).equals(PRE_KEY_ID)) {
- preKeys.put(Integer.parseInt(parser.getAttributeValue(i)),
- parser.nextText());
- }
- }
- }
- break;
- case END_ELEMENT:
- if (parser.getDepth() == initialDepth) {
- break outerloop;
- }
- break;
- default:
- // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
- break;
- }
- }
- return new OmemoBundleElement_VAxolotl(signedPreKeyId, signedPreKey, signedPreKeySignature, identityKey, preKeys);
- }
- }