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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.rest.util;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;
import org.springframework.web.util.UriUtils;
/**
* The Class ValidateEncoding.
*/
public class ValidateEncoding {
private final String encoding = "UTF-8";
/**
* Instantiates a new validate encoding.
*/
private ValidateEncoding() {
}
/**
* The Class Helper.
*/
private static class Helper {
/** The Constant INSTANCE. */
private static final ValidateEncoding INSTANCE = new ValidateEncoding();
}
/**
* Gets the single instance of ValidateEncoding.
*
* @return single instance of ValidateEncoding
*/
public static ValidateEncoding getInstance() {
return Helper.INSTANCE;
}
/**
* Validate.
*
* @param uri the uri
* @return true, if successful
* @throws UnsupportedEncodingException the unsupported encoding exception
*/
public boolean validate(URI uri) throws UnsupportedEncodingException {
boolean result = true;
if (!validatePath(uri.getRawPath())) {
result = false;
}
/*if (!validateQueryParams(uri.getRawQuery())) {
result = false;
} //TODO
*/
return result;
}
/**
* Validate.
*
* @param info the info
* @return true, if successful
* @throws UnsupportedEncodingException the unsupported encoding exception
*/
public boolean validate(UriInfo info) throws UnsupportedEncodingException {
boolean result = true;
if (!validatePath(info.getPath(false))) {
result = false;
}
if (!validateQueryParams(info.getQueryParameters(false))) {
result = false;
}
return result;
}
/**
* Validate path.
*
* @param path the path
* @return true, if successful
* @throws UnsupportedEncodingException the unsupported encoding exception
*/
private boolean validatePath(String path) throws UnsupportedEncodingException {
String[] segments = path.split("/");
boolean valid = true;
for (String segment : segments) {
if (!this.checkEncoding(segment)) {
valid = false;
}
}
return valid;
}
/**
* Validate query params.
*
* @param params the params
* @return true, if successful
* @throws UnsupportedEncodingException the unsupported encoding exception
*/
private boolean validateQueryParams(MultivaluedMap<String, String> params) throws UnsupportedEncodingException {
boolean valid = true;
for (String key : params.keySet()) {
if (!this.checkEncoding(key)) {
valid = false;
}
for (String item : params.get(key)) {
if(item.contains("+")){
item = item.replaceAll("\\+", "%20");
}
if (!this.checkEncoding(item)) {
valid = false;
}
}
}
return valid;
}
/**
* Check encoding.
*
* @param segment the segment
* @return true, if successful
* @throws UnsupportedEncodingException the unsupported encoding exception
*/
private boolean checkEncoding(String segment) throws UnsupportedEncodingException {
boolean result = false;
String decode = UriUtils.decode(segment, encoding);
String encode = UriUtils.encode(decode, encoding);
result = segment.equals(encode);
return result;
}
}
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