ca.uhn.fhir.rest.client.interceptor.BasicAuthInterceptor.java Source code

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Here is the source code for ca.uhn.fhir.rest.client.interceptor.BasicAuthInterceptor.java

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package ca.uhn.fhir.rest.client.interceptor;

/*
 * #%L
 * HAPI FHIR - Core Library
 * %%
 * Copyright (C) 2014 - 2016 University Health Network
 * %%
 * 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.
 * #L%
 */

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;

import ca.uhn.fhir.rest.client.IClientInterceptor;
import ca.uhn.fhir.rest.client.api.IHttpRequest;
import ca.uhn.fhir.rest.client.api.IHttpResponse;
import ca.uhn.fhir.rest.server.Constants;
import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;

/**
 * HTTP interceptor to be used for adding HTTP basic auth username/password tokens
 * to requests
 * <p>
 * See the <a href="http://jamesagnew.github.io/hapi-fhir/doc_rest_client_interceptor.html#Security_HTTP_Basic_Authorization">HAPI Documentation</a>
 * for information on how to use this class.
 * </p>
 */
public class BasicAuthInterceptor implements IClientInterceptor {

    private String myUsername;
    private String myPassword;

    public BasicAuthInterceptor(String theUsername, String thePassword) {
        super();
        myUsername = theUsername;
        myPassword = thePassword;
    }

    @Override
    public void interceptRequest(IHttpRequest theRequest) {
        String authorizationUnescaped = StringUtils.defaultString(myUsername) + ":"
                + StringUtils.defaultString(myPassword);
        String encoded;
        try {
            encoded = Base64.encodeBase64String(authorizationUnescaped.getBytes("ISO-8859-1"));
        } catch (UnsupportedEncodingException e) {
            throw new InternalErrorException("Could not find US-ASCII encoding. This shouldn't happen!");
        }
        theRequest.addHeader(Constants.HEADER_AUTHORIZATION, ("Basic " + encoded));
    }

    @Override
    public void interceptResponse(IHttpResponse theResponse) throws IOException {
        // nothing
    }

}