Process all XML namespaces in PubSub ItemProvider

Fixes SMACK-601

smack-core/src/main/java/org/jivesoftware/smack/util/PacketParserUtils.java

@@ -217,8 +217,14 @@ public class PacketParserUtils {
      * @throws IOException
      */
     public static String parseElement(XmlPullParser parser) throws XmlPullParserException, IOException {
+        return parseElement(parser, false);
+    }
+
+    public static String parseElement(XmlPullParser parser,
+                    boolean fullNamespaces) throws XmlPullParserException,
+                    IOException {
         assert (parser.getEventType() == XmlPullParser.START_TAG);
-        return parseContentDepth(parser, parser.getDepth());
+        return parseContentDepth(parser, parser.getDepth(), fullNamespaces);
     }
 
     /**
@@ -245,28 +251,36 @@ public class PacketParserUtils {
         }
         // Advance the parser, since we want to parse the content of the current element
         parser.next();
-        return parseContentDepth(parser, parser.getDepth());
+        return parseContentDepth(parser, parser.getDepth(), false);
+    }
+
+    public static String parseContentDepth(XmlPullParser parser, int depth)
+                    throws XmlPullParserException, IOException {
+        return parseContentDepth(parser, depth, false);
     }
 
     /**
      * Returns the content from the current position of the parser up to the closing tag of the
      * given depth. Note that only the outermost namespace attributes ("xmlns") will be returned,
-     * not nested ones.
+     * not nested ones, if <code>fullNamespaces</code> is false. If it is true, then namespaces of
+     * parent elements will be added to child elements that don't define a different namespace.
      * <p>
      * This method is able to parse the content with MX- and KXmlParser. In order to achieve
      * this some trade-off has to be make, because KXmlParser does not support xml-roundtrip (ie.
      * return a String on getText() on START_TAG and END_TAG). We are therefore required to work
      * around this limitation, which results in only partial support for XML namespaces ("xmlns"):
-     * Only the outermost namespace of elements will be included in the resulting String.
+     * Only the outermost namespace of elements will be included in the resulting String, if
+     * <code>fullNamespaces</code> is set to false.
      * </p>
      * 
      * @param parser
      * @param depth
+     * @param fullNamespaces
      * @return the content of the current depth
      * @throws XmlPullParserException
      * @throws IOException
      */
-    public static String parseContentDepth(XmlPullParser parser, int depth) throws XmlPullParserException, IOException {
+    public static String parseContentDepth(XmlPullParser parser, int depth, boolean fullNamespaces) throws XmlPullParserException, IOException {
         XmlStringBuilder xml = new XmlStringBuilder();
         int event = parser.getEventType();
         boolean isEmptyElement = false;
@@ -277,7 +291,7 @@ public class PacketParserUtils {
         while (true) {
             if (event == XmlPullParser.START_TAG) {
                 xml.halfOpenElement(parser.getName());
-                if (namespaceElement == null) {
+                if (namespaceElement == null || fullNamespaces) {
                     String namespace = parser.getNamespace();
                     if (StringUtils.isNotEmpty(namespace)) {
                         xml.attribute("xmlns", namespace);

smack-core/src/test/java/org/jivesoftware/smack/parsing/ParsingExceptionTest.java

@@ -67,7 +67,7 @@ public class ParsingExceptionTest {
         try {
             PacketParserUtils.parseMessage(parser);
         } catch (Exception e) {
-            content = PacketParserUtils.parseContentDepth(parser, parserDepth);
+            content = PacketParserUtils.parseContentDepth(parser, parserDepth, false);
         }
         assertNotNull(content);
         assertEquals(MESSAGE_EXCEPTION_ELEMENT + EXTENSION2 + "</message>", content);

smack-core/src/test/java/org/jivesoftware/smack/util/PacketParserUtilsTest.java

@@ -24,9 +24,14 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import java.io.IOException;
 import java.util.Locale;
 import java.util.Properties;
 
+import javax.xml.parsers.FactoryConfigurationError;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.TransformerException;
+
 import org.custommonkey.xmlunit.Diff;
 import org.custommonkey.xmlunit.examples.RecursiveElementNameAndTextQualifier;
 import org.jivesoftware.smack.packet.Message;
@@ -34,6 +39,7 @@ import org.jivesoftware.smack.packet.Packet;
 import org.jivesoftware.smack.packet.Presence;
 import org.jivesoftware.smack.test.util.TestUtils;
 import org.junit.Test;
+import org.xml.sax.SAXException;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
@@ -790,6 +796,23 @@ public class PacketParserUtilsTest {
         assertEquals("", content);
     }
 
+    @Test
+    public void parseElementMultipleNamespace()
+                    throws ParserConfigurationException,
+                    FactoryConfigurationError, XmlPullParserException,
+                    IOException, TransformerException, SAXException {
+        // @formatter:off
+        final String stanza = XMLBuilder.create("outer", "outerNamespace").a("outerAttribute", "outerValue")
+                        .element("inner", "innerNamespace").a("innverAttribute", "innerValue")
+                            .element("innermost")
+                                .t("some text")
+                        .asString();
+        // @formatter:on
+        XmlPullParser parser = TestUtils.getParser(stanza, "outer");
+        String result = PacketParserUtils.parseElement(parser, true);
+        assertXMLEqual(stanza, result);
+    }
+
     private String determineNonDefaultLanguage() {
         String otherLanguage = "jp";
         Locale[] availableLocales = Locale.getAvailableLocales();

smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/provider/ItemProvider.java

@@ -54,7 +54,7 @@ public class ItemProvider implements PacketExtensionProvider
 
             if (ProviderManager.getExtensionProvider(payloadElemName, payloadNS) == null) 
             {
-                String payloadText = PacketParserUtils.parseElement(parser);
+                String payloadText = PacketParserUtils.parseElement(parser, true);
                 return new PayloadItem<SimplePayload>(id, node, new SimplePayload(payloadElemName, payloadNS, payloadText));
             }
             else