OpenPgpContentElementProvider.java
- /**
- *
- * Copyright 2017-2021 Florian Schmaus, 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.ox.provider;
- import java.io.IOException;
- import java.text.ParseException;
- import java.util.Date;
- import java.util.HashSet;
- import java.util.LinkedList;
- import java.util.List;
- import java.util.Set;
- import java.util.logging.Level;
- import java.util.logging.Logger;
- import org.jivesoftware.smack.packet.ExtensionElement;
- import org.jivesoftware.smack.packet.XmlEnvironment;
- import org.jivesoftware.smack.parsing.SmackParsingException;
- import org.jivesoftware.smack.provider.ExtensionElementProvider;
- import org.jivesoftware.smack.provider.ProviderManager;
- import org.jivesoftware.smack.util.PacketParserUtils;
- import org.jivesoftware.smack.util.ParserUtils;
- import org.jivesoftware.smack.xml.XmlPullParser;
- import org.jivesoftware.smack.xml.XmlPullParserException;
- import org.jivesoftware.smackx.ox.element.CryptElement;
- import org.jivesoftware.smackx.ox.element.EncryptedOpenPgpContentElement;
- import org.jivesoftware.smackx.ox.element.OpenPgpContentElement;
- import org.jivesoftware.smackx.ox.element.SignElement;
- import org.jivesoftware.smackx.ox.element.SigncryptElement;
- import org.jxmpp.jid.Jid;
- import org.jxmpp.jid.impl.JidCreate;
- /**
- * Abstract {@link ExtensionElementProvider} implementation for the also abstract {@link OpenPgpContentElement}.
- *
- * @param <O> Specialized subclass of {@link OpenPgpContentElement}.
- */
- public abstract class OpenPgpContentElementProvider<O extends OpenPgpContentElement> extends ExtensionElementProvider<O> {
- private static final Logger LOGGER = Logger.getLogger(OpenPgpContentElementProvider.class.getName());
- public static OpenPgpContentElement parseOpenPgpContentElement(String element)
- throws XmlPullParserException, IOException {
- XmlPullParser parser = PacketParserUtils.getParserFor(element);
- return parseOpenPgpContentElement(parser);
- }
- public static OpenPgpContentElement parseOpenPgpContentElement(XmlPullParser parser)
- throws XmlPullParserException {
- try {
- switch (parser.getName()) {
- case SigncryptElement.ELEMENT:
- return SigncryptElementProvider.INSTANCE.parse(parser);
- case SignElement.ELEMENT:
- return SignElementProvider.INSTANCE.parse(parser);
- case CryptElement.ELEMENT:
- return CryptElementProvider.INSTANCE.parse(parser);
- default: throw new XmlPullParserException("Expected <crypt/>, <sign/> or <signcrypt/> element, " +
- "but got neither of them.");
- }
- } catch (Exception e) {
- throw new XmlPullParserException(e.getMessage());
- }
- }
- @Override
- public abstract O parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment)
- throws XmlPullParserException, IOException, SmackParsingException, ParseException;
- protected static OpenPgpContentElementData parseOpenPgpContentElementData(XmlPullParser parser, int initialDepth)
- throws XmlPullParserException, IOException, SmackParsingException, ParseException {
- Set<Jid> to = new HashSet<>();
- Date timestamp = null;
- String rpad = null;
- List<ExtensionElement> payload = new LinkedList<>();
- outerloop: while (true) {
- XmlPullParser.Event tag = parser.next();
- String name = parser.getName();
- switch (tag) {
- case START_ELEMENT:
- switch (name) {
- case OpenPgpContentElement.ELEM_TIME:
- String stamp = parser.getAttributeValue("", OpenPgpContentElement.ATTR_STAMP);
- timestamp = ParserUtils.getDateFromXep82String(stamp);
- break;
- case OpenPgpContentElement.ELEM_TO:
- String jid = parser.getAttributeValue("", OpenPgpContentElement.ATTR_JID);
- to.add(JidCreate.bareFrom(jid));
- break;
- case EncryptedOpenPgpContentElement.ELEM_RPAD:
- rpad = parser.nextText();
- break;
- case OpenPgpContentElement.ELEM_PAYLOAD:
- innerloop: while (true) {
- XmlPullParser.Event ptag = parser.next();
- String pname = parser.getName();
- String pns = parser.getNamespace();
- switch (ptag) {
- case START_ELEMENT:
- ExtensionElementProvider<ExtensionElement> provider =
- ProviderManager.getExtensionProvider(pname, pns);
- if (provider == null) {
- LOGGER.log(Level.INFO, "No provider found for " + pname + " " + pns);
- continue innerloop;
- }
- payload.add(provider.parse(parser));
- break;
- case END_ELEMENT:
- break innerloop;
- default:
- // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
- break;
- }
- }
- break;
- }
- break;
- case END_ELEMENT:
- switch (name) {
- case CryptElement.ELEMENT:
- case SigncryptElement.ELEMENT:
- case SignElement.ELEMENT:
- break outerloop;
- }
- break;
- default:
- // Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
- break;
- }
- }
- return new OpenPgpContentElementData(to, timestamp, rpad, payload);
- }
- protected static final class OpenPgpContentElementData {
- final Set<Jid> to;
- final Date timestamp;
- final String rpad;
- final List<ExtensionElement> payload;
- private OpenPgpContentElementData(Set<Jid> to, Date timestamp, String rpad, List<ExtensionElement> payload) {
- this.to = to;
- this.timestamp = timestamp;
- this.rpad = rpad;
- this.payload = payload;
- }
- }
- }