001package ca.uhn.fhir.rest.client.interceptor;
002
003/*
004 * #%L
005 * HAPI FHIR - Client Framework
006 * %%
007 * Copyright (C) 2014 - 2019 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;
028
029import ca.uhn.fhir.rest.api.Constants;
030import ca.uhn.fhir.rest.client.api.*;
031import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
032import org.apache.commons.lang3.Validate;
033
034/**
035 * HTTP interceptor to be used for adding HTTP basic auth username/password tokens
036 * to requests
037 * <p>
038 * See the <a href="http://jamesagnew.github.io/hapi-fhir/doc_rest_client_interceptor.html#Security_HTTP_Basic_Authorization">HAPI Documentation</a>
039 * for information on how to use this class.
040 * </p>
041 */
042public class BasicAuthInterceptor implements IClientInterceptor {
043
044        private String myUsername;
045        private String myPassword;
046        private String myHeaderValue;
047
048        /**
049         * @param theUsername The username
050         * @param thePassword The password
051         */
052        public BasicAuthInterceptor(String theUsername, String thePassword) {
053                this(StringUtils.defaultString(theUsername) + ":" + StringUtils.defaultString(thePassword));
054        }
055
056        /**
057         * @param theCredentialString A credential string in the format <code>username:password</code>
058         */
059        public BasicAuthInterceptor(String theCredentialString) {
060                Validate.notBlank(theCredentialString, "theCredentialString must not be null or blank");
061                Validate.isTrue(theCredentialString.contains(":"), "theCredentialString must be in the format 'username:password'");
062                String encoded = Base64.encodeBase64String(theCredentialString.getBytes(Constants.CHARSET_US_ASCII));
063                myHeaderValue = "Basic " + encoded;
064        }
065
066        @Override
067        public void interceptRequest(IHttpRequest theRequest) {
068                theRequest.addHeader(Constants.HEADER_AUTHORIZATION, myHeaderValue);
069        }
070
071        @Override
072        public void interceptResponse(IHttpResponse theResponse) throws IOException {
073                // nothing
074        }
075
076}