100 lines
4.3 KiB
Java
100 lines
4.3 KiB
Java
/**
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*
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* Copyright 2017 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.omemo.provider;
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import org.jivesoftware.smack.provider.ExtensionElementProvider;
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import org.jivesoftware.smackx.omemo.element.OmemoBundleVAxolotlElement;
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import org.xmlpull.v1.XmlPullParser;
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import java.util.HashMap;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.BUNDLE;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.IDENTITY_KEY;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEYS;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEY_ID;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.PRE_KEY_PUB;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_ID;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_PUB;
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import static org.jivesoftware.smackx.omemo.element.OmemoBundleElement.SIGNED_PRE_KEY_SIG;
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import static org.xmlpull.v1.XmlPullParser.END_TAG;
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import static org.xmlpull.v1.XmlPullParser.START_TAG;
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/**
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* Smack ExtensionProvider that parses OMEMO bundle element into OmemoBundleElement objects.
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*
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* @author Paul Schaub
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*/
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public class OmemoBundleVAxolotlProvider extends ExtensionElementProvider<OmemoBundleVAxolotlElement> {
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@Override
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public OmemoBundleVAxolotlElement parse(XmlPullParser parser, int initialDepth) throws Exception {
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boolean stop = false;
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boolean inPreKeys = false;
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int signedPreKeyId = -1;
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String signedPreKey = null;
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String signedPreKeySignature = null;
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String identityKey = null;
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HashMap<Integer, String> preKeys = new HashMap<>();
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while (!stop) {
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int tag = parser.next();
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String name = parser.getName();
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switch (tag) {
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case START_TAG:
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// <signedPreKeyPublic>
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if (name.equals(SIGNED_PRE_KEY_PUB)) {
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for (int i = 0; i < parser.getAttributeCount(); i++) {
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if (parser.getAttributeName(i).equals(SIGNED_PRE_KEY_ID)) {
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int id = Integer.parseInt(parser.getAttributeValue(i));
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signedPreKey = parser.nextText();
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signedPreKeyId = id;
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}
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}
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}
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// <bundleGetSignedPreKeySignature>
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else if (name.equals(SIGNED_PRE_KEY_SIG)) {
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signedPreKeySignature = parser.nextText();
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}
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// <deserializeIdentityKey>
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else if (name.equals(IDENTITY_KEY)) {
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identityKey = parser.nextText();
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}
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// <deserializeECPublicKeys>
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else if (name.equals(PRE_KEYS)) {
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inPreKeys = true;
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}
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// <preKeyPublic preKeyId='424242'>
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else if (inPreKeys && name.equals(PRE_KEY_PUB)) {
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for (int i = 0; i < parser.getAttributeCount(); i++) {
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if (parser.getAttributeName(i).equals(PRE_KEY_ID)) {
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preKeys.put(Integer.parseInt(parser.getAttributeValue(i)),
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parser.nextText());
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}
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}
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}
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break;
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case END_TAG:
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if (name.equals(BUNDLE)) {
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stop = true;
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}
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break;
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}
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}
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return new OmemoBundleVAxolotlElement(signedPreKeyId, signedPreKey, signedPreKeySignature, identityKey, preKeys);
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}
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}
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