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[core] Increase resilience against faulty parser implementions
If one of the parser throws a NullPointerException or NumberFormatException, then this should not lead to a disconnect due to an unhandled exception. Instead wrap those in an exception that is handled by the parsing exception callback and ask the user to fill a bug report for those faulty parsers. We may adjust the list of exceptions that are wrapped in the future.
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5dd08fc215
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02d8f53246
2 changed files with 21 additions and 2 deletions
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@ -1460,7 +1460,14 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
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int parserDepth = parser.getDepth();
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Stanza stanza = null;
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try {
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stanza = PacketParserUtils.parseStanza(parser, incomingStreamXmlEnvironment);
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try {
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stanza = PacketParserUtils.parseStanza(parser, incomingStreamXmlEnvironment);
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} catch (NullPointerException | NumberFormatException e) {
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// Those exceptions should probably be wrapped into a SmackParsingException and therefore likely constitute a missing verification in the throwing parser.
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String message = "Smack parser throw unexpected exception '" + e.getMessage() + "', please report this at " + Smack.BUG_REPORT_URL;
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LOGGER.log(Level.SEVERE, message, e);
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throw new IOException(message, e);
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}
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}
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catch (XmlPullParserException | SmackParsingException | IOException | IllegalArgumentException e) {
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CharSequence content = PacketParserUtils.parseContentDepth(parser,
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@ -1,6 +1,6 @@
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/**
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*
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* Copyright 2020-2021 Florian Schmaus
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* Copyright 2020-2024 Florian Schmaus
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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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@ -17,6 +17,8 @@
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package org.jivesoftware.smack;
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import java.io.InputStream;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.logging.Logger;
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import org.jivesoftware.smack.util.FileUtils;
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@ -29,6 +31,16 @@ public class Smack {
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public static final String SMACK_PACKAGE = SMACK_ORG + ".smack";
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public static final URL BUG_REPORT_URL;
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static {
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try {
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BUG_REPORT_URL = new URL("https://discourse.igniterealtime.org/c/smack/smack-support/9");
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} catch (MalformedURLException e) {
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throw new ExceptionInInitializerError(e);
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}
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}
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/**
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* Returns the Smack version information, e.g."1.3.0".
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*
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