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org.apache.cxf.interceptor.StaxInInterceptor Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.interceptor;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.cxf.common.classloader.ClassLoaderUtils;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.helpers.CastUtils;
import org.apache.cxf.helpers.HttpHeaderHelper;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageUtils;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.staxutils.StaxUtils;
/**
* Creates an XMLStreamReader from the InputStream on the Message.
*/
public class StaxInInterceptor extends AbstractPhaseInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(StaxInInterceptor.class);
private static Map factories = new HashMap();
public StaxInInterceptor() {
super(Phase.POST_STREAM);
}
public StaxInInterceptor(String phase) {
super(phase);
}
public void handleMessage(Message message) {
if (isGET(message) || message.getContent(XMLStreamReader.class) != null) {
LOG.fine("StaxInInterceptor skipped.");
return;
}
InputStream is = message.getContent(InputStream.class);
Reader reader = null;
if (is == null) {
reader = message.getContent(Reader.class);
if (reader == null) {
return;
}
}
String contentType = (String)message.get(Message.CONTENT_TYPE);
if (contentType != null
&& contentType.contains("text/html")
&& MessageUtils.isRequestor(message)) {
StringBuilder htmlMessage = new StringBuilder(1024);
try {
if (reader == null) {
reader = new InputStreamReader(is, (String)message.get(Message.ENCODING));
}
char s[] = new char[1024];
int i = reader.read(s);
while (htmlMessage.length() < 64536 && i > 0) {
htmlMessage.append(s, 0, i);
i = reader.read(s);
}
} catch (IOException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("INVALID_HTML_RESPONSETYPE",
LOG, "(none)"));
}
throw new Fault(new org.apache.cxf.common.i18n.Message("INVALID_HTML_RESPONSETYPE",
LOG, (htmlMessage == null || htmlMessage.length() == 0) ? "(none)" : htmlMessage));
}
if (contentType == null) {
//if contentType is null, this is likely a an empty post/put/delete/similar, lets see if it's
//detectable at all
Map> m = CastUtils.cast((Map)message.get(Message.PROTOCOL_HEADERS));
if (m != null) {
List contentLen = HttpHeaderHelper
.getHeader(m, HttpHeaderHelper.CONTENT_LENGTH);
List contentTE = HttpHeaderHelper
.getHeader(m, HttpHeaderHelper.CONTENT_TRANSFER_ENCODING);
if ((StringUtils.isEmpty(contentLen) || "0".equals(contentLen.get(0)))
&& StringUtils.isEmpty(contentTE)) {
return;
}
}
}
String encoding = (String)message.get(Message.ENCODING);
XMLStreamReader xreader;
try {
XMLInputFactory factory = getXMLInputFactory(message);
if (factory == null) {
if (reader != null) {
xreader = StaxUtils.createXMLStreamReader(reader);
} else {
xreader = StaxUtils.createXMLStreamReader(is, encoding);
}
} else {
synchronized (factory) {
if (reader != null) {
xreader = factory.createXMLStreamReader(reader);
} else {
xreader = factory.createXMLStreamReader(is, encoding);
}
}
}
xreader = configureRestrictions(xreader, message);
} catch (XMLStreamException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("STREAM_CREATE_EXC",
LOG,
encoding), e);
}
message.setContent(XMLStreamReader.class, xreader);
message.getInterceptorChain().add(StaxInEndingInterceptor.INSTANCE);
}
private XMLStreamReader configureRestrictions(XMLStreamReader xreader, Message message) throws XMLStreamException {
Integer maxChildElements = getInteger(message, StaxUtils.MAX_CHILD_ELEMENTS);
Integer maxElementDepth = getInteger(message, StaxUtils.MAX_ELEMENT_DEPTH);
Integer maxAttributeCount = getInteger(message, StaxUtils.MAX_ATTRIBUTE_COUNT);
Integer maxAttributeSize = getInteger(message, StaxUtils.MAX_ATTRIBUTE_SIZE);
Integer maxTextLength = getInteger(message, StaxUtils.MAX_TEXT_LENGTH);
Long maxElementCount = getLong(message, StaxUtils.MAX_ELEMENT_COUNT);
Long maxXMLCharacters = getLong(message, StaxUtils.MAX_XML_CHARACTERS);
return StaxUtils.configureReader(xreader, maxChildElements, maxElementDepth,
maxAttributeCount, maxAttributeSize, maxTextLength,
maxElementCount, maxXMLCharacters);
}
private Long getLong(Message message, String key) {
Object o = message.getContextualProperty(key);
if (o instanceof Long) {
return (Long)o;
} else if (o instanceof Number) {
return ((Number)o).longValue();
} else if (o instanceof String) {
return Long.valueOf(o.toString());
}
return null;
}
private Integer getInteger(Message message, String key) {
Object o = message.getContextualProperty(key);
if (o instanceof Integer) {
return (Integer)o;
} else if (o instanceof Number) {
return ((Number)o).intValue();
} else if (o instanceof String) {
return Integer.valueOf((String)o);
}
return null;
}
public static XMLInputFactory getXMLInputFactory(Message m) throws Fault {
Object o = m.getContextualProperty(XMLInputFactory.class.getName());
if (o instanceof XMLInputFactory) {
return (XMLInputFactory)o;
} else if (o != null) {
XMLInputFactory xif = factories.get(o);
if (xif == null) {
Class cls;
if (o instanceof Class) {
cls = (Class)o;
} else if (o instanceof String) {
try {
cls = ClassLoaderUtils.loadClass((String)o, StaxInInterceptor.class);
} catch (ClassNotFoundException e) {
throw new Fault(e);
}
} else {
throw new Fault(
new org.apache.cxf.common.i18n.Message("INVALID_INPUT_FACTORY",
LOG, o));
}
try {
xif = (XMLInputFactory)(cls.newInstance());
factories.put(o, xif);
} catch (InstantiationException e) {
throw new Fault(e);
} catch (IllegalAccessException e) {
throw new Fault(e);
}
}
return xif;
}
return null;
}
}
