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A web service test double for all occasions - standalone edition

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/*
 * Copyright (C) 2017-2021 Thomas Akehurst
 *
 * 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 com.github.tomakehurst.wiremock.security;

import static com.google.common.net.HttpHeaders.AUTHORIZATION;
import static java.util.Arrays.asList;

import com.github.tomakehurst.wiremock.client.BasicCredentials;
import com.github.tomakehurst.wiremock.http.Request;
import com.google.common.base.Function;
import com.google.common.collect.FluentIterable;
import java.util.List;

public class BasicAuthenticator implements Authenticator {

  private final List credentials;

  public BasicAuthenticator(List credentials) {
    this.credentials = credentials;
  }

  public BasicAuthenticator(BasicCredentials... credentials) {
    this.credentials = asList(credentials);
  }

  public BasicAuthenticator(String username, String password) {
    this(new BasicCredentials(username, password));
  }

  @Override
  public boolean authenticate(Request request) {
    List headerValues =
        FluentIterable.from(credentials)
            .transform(
                new Function() {
                  @Override
                  public String apply(BasicCredentials input) {
                    return input.asAuthorizationHeaderValue();
                  }
                })
            .toList();
    return request.containsHeader(AUTHORIZATION)
        && headerValues.contains(request.header(AUTHORIZATION).firstValue());
  }
}