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org.apache.cxf.jaxrs.provider.FormEncodingProvider 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.jaxrs.provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.nio.charset.StandardCharsets;
import javax.ws.rs.Consumes;
import javax.ws.rs.Encoded;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import org.apache.cxf.jaxrs.ext.MessageContext;
import org.apache.cxf.jaxrs.ext.multipart.Attachment;
import org.apache.cxf.jaxrs.ext.multipart.MultipartBody;
import org.apache.cxf.jaxrs.impl.MetadataMap;
import org.apache.cxf.jaxrs.utils.AnnotationUtils;
import org.apache.cxf.jaxrs.utils.ExceptionUtils;
import org.apache.cxf.jaxrs.utils.FormUtils;
import org.apache.cxf.jaxrs.utils.HttpUtils;
import org.apache.cxf.jaxrs.utils.multipart.AttachmentUtils;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.PhaseInterceptorChain;
@Produces({"application/x-www-form-urlencoded", "multipart/form-data" })
@Consumes({"application/x-www-form-urlencoded", "multipart/form-data" })
@Provider
public class FormEncodingProvider extends AbstractConfigurableProvider
implements MessageBodyReader, MessageBodyWriter {
private FormValidator validator;
@Context private MessageContext mc;
private String attachmentDir;
private String attachmentThreshold;
private String attachmentMaxSize;
private boolean expectEncoded;
public FormEncodingProvider() {
}
public FormEncodingProvider(boolean expectEncoded) {
this.expectEncoded = expectEncoded;
}
public void setExpectedEncoded(boolean expect) {
this.expectEncoded = expect;
}
public void setAttachmentDirectory(String dir) {
attachmentDir = dir;
}
public void setAttachmentThreshold(String threshold) {
attachmentThreshold = threshold;
}
public void setAttachmentMaxSize(String maxSize) {
attachmentMaxSize = maxSize;
}
public void setValidator(FormValidator formValidator) {
validator = formValidator;
}
public boolean isReadable(Class type, Type genericType,
Annotation[] annotations, MediaType mt) {
return isSupported(type, mt);
}
public T readFrom(
Class clazz, Type genericType, Annotation[] annotations, MediaType mt,
MultivaluedMap headers, InputStream is)
throws IOException {
if (is == null) {
return null;
}
try {
if (mt.isCompatible(MediaType.MULTIPART_FORM_DATA_TYPE)) {
MultipartBody body = AttachmentUtils.getMultipartBody(mc);
if (MultipartBody.class.isAssignableFrom(clazz)) {
return clazz.cast(body);
} else if (Attachment.class.isAssignableFrom(clazz)) {
return clazz.cast(body.getRootAttachment());
}
}
MultivaluedMap params = createMap(clazz);
populateMap(params, annotations, is, mt, !keepEncoded(annotations));
validateMap(params);
persistParamsOnMessage(params);
return getFormObject(clazz, params);
} catch (WebApplicationException e) {
throw e;
} catch (Exception e) {
throw ExceptionUtils.toBadRequestException(e, null);
}
}
protected boolean keepEncoded(Annotation[] anns) {
return AnnotationUtils.getAnnotation(anns, Encoded.class) != null
|| expectEncoded;
}
protected void persistParamsOnMessage(MultivaluedMap params) {
Message message = PhaseInterceptorChain.getCurrentMessage();
if (message != null) {
message.put(FormUtils.FORM_PARAM_MAP, params);
}
}
@SuppressWarnings("unchecked")
protected MultivaluedMap createMap(Class clazz) throws Exception {
if (clazz == MultivaluedMap.class || clazz == Form.class) {
return new MetadataMap();
}
return (MultivaluedMap)clazz.newInstance();
}
private T getFormObject(Class clazz, MultivaluedMap params) {
return clazz.cast(Form.class.isAssignableFrom(clazz) ? new Form(params) : params);
}
/**
* Retrieve map of parameters from the passed in message
*/
protected void populateMap(MultivaluedMap params,
Annotation[] anns,
InputStream is,
MediaType mt,
boolean decode) {
if (mt.isCompatible(MediaType.MULTIPART_FORM_DATA_TYPE)) {
MultipartBody body =
AttachmentUtils.getMultipartBody(mc, attachmentDir, attachmentThreshold, attachmentMaxSize);
FormUtils.populateMapFromMultipart(params, body, PhaseInterceptorChain.getCurrentMessage(),
decode);
} else {
String enc = HttpUtils.getEncoding(mt, StandardCharsets.UTF_8.name());
Object servletRequest = mc != null ? mc.getHttpServletRequest() : null;
if (servletRequest == null) {
FormUtils.populateMapFromString(params,
PhaseInterceptorChain.getCurrentMessage(),
FormUtils.readBody(is, enc),
enc,
decode);
} else {
FormUtils.populateMapFromString(params,
PhaseInterceptorChain.getCurrentMessage(),
FormUtils.readBody(is, enc),
enc,
decode,
(javax.servlet.http.HttpServletRequest)servletRequest);
}
}
}
protected void validateMap(MultivaluedMap params) {
if (validator != null) {
validator.validate(params);
}
}
public long getSize(T t, Class type,
Type genericType, Annotation[] annotations,
MediaType mediaType) {
return -1;
}
public boolean isWriteable(Class type, Type genericType, Annotation[] annotations,
MediaType mt) {
return isSupported(type, mt);
}
private static boolean isSupported(Class type, MediaType mt) {
return (MultivaluedMap.class.isAssignableFrom(type) || Form.class.isAssignableFrom(type))
|| ("multipart".equalsIgnoreCase(mt.getType())
&& mt.isCompatible(MediaType.MULTIPART_FORM_DATA_TYPE)
&& (MultivaluedMap.class.isAssignableFrom(type) || Form.class.isAssignableFrom(type)));
}
@SuppressWarnings("unchecked")
public void writeTo(T obj, Class c, Type t, Annotation[] anns,
MediaType mt, MultivaluedMap headers, OutputStream os)
throws IOException, WebApplicationException {
MultivaluedMap map =
(MultivaluedMap)(obj instanceof Form ? ((Form)obj).asMap() : obj);
boolean encoded = keepEncoded(anns);
String enc = HttpUtils.getSetEncoding(mt, headers, StandardCharsets.UTF_8.name());
FormUtils.writeMapToOutputStream(map, os, enc, encoded);
}
}
