001package ca.uhn.fhir.rest.client.interceptor;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2016 University Health Network
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import java.io.IOException;
024import java.io.UnsupportedEncodingException;
025
026import org.apache.commons.codec.binary.Base64;
027import org.apache.commons.lang3.StringUtils;
028import org.apache.http.HttpResponse;
029import org.apache.http.client.methods.HttpRequestBase;
030
031import ca.uhn.fhir.rest.client.IClientInterceptor;
032import ca.uhn.fhir.rest.server.Constants;
033import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
034
035/**
036 * HTTP interceptor to be used for adding HTTP basic auth username/password tokens
037 * to requests
038 * <p>
039 * See the <a href="http://jamesagnew.github.io/hapi-fhir/doc_rest_client_interceptor.html#Security_HTTP_Basic_Authorization">HAPI Documentation</a>
040 * for information on how to use this class.
041 * </p>
042 */
043public class BasicAuthInterceptor implements IClientInterceptor {
044
045        private String myUsername;
046        private String myPassword;
047
048    public BasicAuthInterceptor(String theUsername, String thePassword) {
049                super();
050                myUsername = theUsername;
051                myPassword = thePassword;
052        }
053
054        @Override
055        public void interceptRequest(HttpRequestBase theRequest) {
056                String authorizationUnescaped = StringUtils.defaultString(myUsername) + ":" + StringUtils.defaultString(myPassword);
057        String encoded;
058        try {
059                encoded = Base64.encodeBase64String(authorizationUnescaped.getBytes("ISO-8859-1"));
060        } catch (UnsupportedEncodingException e) {
061                throw new InternalErrorException("Could not find US-ASCII encoding. This shouldn't happen!");
062        }
063        theRequest.addHeader(Constants.HEADER_AUTHORIZATION, ("Basic " + encoded));
064        }
065
066        @Override
067        public void interceptResponse(HttpResponse theResponse) throws IOException {
068                // nothing
069        }
070
071        
072
073}