/* * Copyright 2015 the original author or authors. * * 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. */ package org.springframework.social.oauth2; import java.io.IOException; import java.nio.charset.Charset; import java.util.Base64; import org.springframework.http.HttpRequest; import org.springframework.http.client.ClientHttpRequestExecution; import org.springframework.http.client.ClientHttpRequestInterceptor; import org.springframework.http.client.ClientHttpResponse; /** * Client request interceptor that does preemptive HTTP Basic authentication by ensuring that an Authorization * header with HTTP Basic credentials is always included in the request headers. * @author Craig Walls */ class PreemptiveBasicAuthClientHttpRequestInterceptor implements ClientHttpRequestInterceptor { private final String username; private final String password; private final Charset charset; public PreemptiveBasicAuthClientHttpRequestInterceptor(String username, String password) { this(username, password, Charset.forName("UTF-8")); } public PreemptiveBasicAuthClientHttpRequestInterceptor(String username, String password, Charset charset) { this.username = username; this.password = password; this.charset = charset; } public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException { request.getHeaders().set("Authorization", "Basic " + new String(Base64.getEncoder().encode((username + ":" + password).getBytes(charset)), charset)); return execution.execute(request, body); } }