/*-
 * ============LICENSE_START==========================================
 * ONAP Portal
 * ===================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ===================================================================
 *
 * Unless otherwise specified, all software contained herein is licensed
 * under the Apache License, Version 2.0 (the "License");
 * you may not use this software 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.
 *
 * Unless otherwise specified, all documentation contained herein is licensed
 * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
 * you may not use this documentation except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             https://creativecommons.org/licenses/by/4.0/
 *
 * Unless required by applicable law or agreed to in writing, documentation
 * 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.
 *
 * ============LICENSE_END============================================
 *
 * 
 */
package org.onap.portalapp.config;

import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

import org.onap.portalapp.portal.utils.MusicCookieCsrfTokenRepository;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.util.matcher.RegexRequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcher;


@Configuration
@EnableWebSecurity
public class ExternalSecurityConfig extends WebSecurityConfigurerAdapter {
	@Override
	protected void configure(HttpSecurity http) throws Exception {
		RequestMatcher csrfRequestMatcher = new RequestMatcher() {
			private RegexRequestMatcher requestMatcher = new RegexRequestMatcher("/portalApi/.*", null);
			private Pattern allowedMethods = Pattern.compile("^(GET|HEAD|TRACE|OPTIONS)$");
			@Override
			public boolean matches(HttpServletRequest request) {
				if(allowedMethods.matcher(request.getMethod()).matches())
		            return false;   
				if(requestMatcher.matches(request))
					return true;			
				return false;
			}
		};
		http.csrf().csrfTokenRepository(MusicCookieCsrfTokenRepository.withHttpOnlyFalse()).requireCsrfProtectionMatcher(csrfRequestMatcher);
	}
}