<%#
 Copyright 2013-2018 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see http://www.jhipster.tech/
 for more information.

 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 <%=packageName%>.config;

<%_ if(authenticationType === 'jwt') { _%>
import <%=packageName%>.security.AuthoritiesConstants;
import <%=packageName%>.security.jwt.JWTConfigurer;
import <%=packageName%>.security.jwt.TokenProvider;

import org.springframework.context.annotation.*;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.data.repository.query.SecurityEvaluationContextExtension;
import org.zalando.problem.spring.web.advice.security.SecurityProblemSupport;

@Configuration
@Import(SecurityProblemSupport.class)
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class MicroserviceSecurityConfiguration extends WebSecurityConfigurerAdapter {

    private final TokenProvider tokenProvider;

    private final SecurityProblemSupport problemSupport;

    public MicroserviceSecurityConfiguration(TokenProvider tokenProvider, SecurityProblemSupport problemSupport) {
        this.tokenProvider = tokenProvider;
        this.problemSupport = problemSupport;
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring()
            .antMatchers(HttpMethod.OPTIONS, "/**")
            .antMatchers("/app/**/*.{js,html}")
            .antMatchers("/bower_components/**")
            .antMatchers("/i18n/**")
            .antMatchers("/content/**")
            .antMatchers("/swagger-ui/index.html")
            .antMatchers("/test/**")
            .antMatchers("/h2-console/**");
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .csrf()
            .disable()
            .exceptionHandling()
            .authenticationEntryPoint(problemSupport)
            .accessDeniedHandler(problemSupport)
        .and()
            .headers()
            .frameOptions()
            .disable()
        .and()
            .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
        .and()
            .authorizeRequests()
            .antMatchers("/api/**").authenticated()
            .antMatchers("/management/health").permitAll()
            .antMatchers("/management/**").hasAuthority(AuthoritiesConstants.ADMIN)
            .antMatchers("/swagger-resources/configuration/ui").permitAll()
        .and()
            .apply(securityConfigurerAdapter());
    }

    private JWTConfigurer securityConfigurerAdapter() {
        return new JWTConfigurer(tokenProvider);
    }

    @Bean
    public SecurityEvaluationContextExtension securityEvaluationContextExtension() {
        return new SecurityEvaluationContextExtension();
    }
}
<%_ } _%>
<%_ if(authenticationType === 'uaa') { _%>
import <%=packageName%>.config.oauth2.OAuth2JwtAccessTokenConverter;
import <%=packageName%>.config.oauth2.OAuth2Properties;
import <%=packageName%>.security.oauth2.OAuth2SignatureVerifierClient;
import <%=packageName%>.security.AuthoritiesConstants;

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.cloud.client.loadbalancer.RestTemplateCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;
import org.springframework.security.web.csrf.CookieCsrfTokenRepository;
<%_ if (applicationType === 'gateway') { _%>
import org.springframework.security.web.csrf.CsrfFilter;
import org.springframework.web.filter.CorsFilter;
<%_ } _%>
import org.springframework.web.client.RestTemplate;

@Configuration
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class MicroserviceSecurityConfiguration extends ResourceServerConfigurerAdapter {
    private final OAuth2Properties oAuth2Properties;

    <%_ if (applicationType === 'gateway') { _%>
    private final CorsFilter corsFilter;

    <%_ } _%>
    public MicroserviceSecurityConfiguration(OAuth2Properties oAuth2Properties<%_ if (applicationType === 'gateway') { _%>, CorsFilter corsFilter<%_ } _%>) {
        this.oAuth2Properties = oAuth2Properties;
        <%_ if (applicationType === 'gateway') { _%>
        this.corsFilter = corsFilter;
        <%_ } _%>
    }

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http
            .csrf()
		<%_ if (applicationType === 'gateway') { _%>
            .ignoringAntMatchers("/h2-console/**")
            .csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
        .and()
            .addFilterBefore(corsFilter, CsrfFilter.class)
		<%_ } else { _%>
            .disable()
		<%_ } _%>
            .headers()
            .frameOptions()
            .disable()
        .and()
            .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
        .and()
            .authorizeRequests()
            .antMatchers("/api/profile-info").permitAll()
            .antMatchers("/api/**").authenticated()
            .antMatchers("/management/health").permitAll()
            .antMatchers("/management/**").hasAuthority(AuthoritiesConstants.ADMIN)
            .antMatchers("/swagger-resources/configuration/ui").permitAll();
    }

    @Bean
    public TokenStore tokenStore(JwtAccessTokenConverter jwtAccessTokenConverter) {
        return new JwtTokenStore(jwtAccessTokenConverter);
    }

    @Bean
    public JwtAccessTokenConverter jwtAccessTokenConverter(OAuth2SignatureVerifierClient signatureVerifierClient) {
        return new OAuth2JwtAccessTokenConverter(oAuth2Properties, signatureVerifierClient);
    }

    @Bean
	@Qualifier("loadBalancedRestTemplate")
    public RestTemplate loadBalancedRestTemplate(RestTemplateCustomizer customizer) {
        RestTemplate restTemplate = new RestTemplate();
        customizer.customize(restTemplate);
        return restTemplate;
    }

    @Bean
    @Qualifier("vanillaRestTemplate")
    public RestTemplate vanillaRestTemplate() {
        return new RestTemplate();
    }
}
<%_ } _%>
<%_ if(authenticationType === 'oauth2') { _%>
import <%=packageName%>.security.AuthoritiesConstants;
import <%=packageName%>.security.oauth2.*;
<%_ if(applicationType === 'gateway') { _%>
import org.springframework.beans.factory.annotation.Qualifier;
<%_ } _%>
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.security.oauth2.resource.*;
import org.springframework.context.annotation.*;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;
<%_ if(applicationType === 'gateway') { _%>
import org.springframework.security.web.util.matcher.RequestHeaderRequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcher;
<%_ } _%>
import org.springframework.web.client.RestTemplate;
import org.zalando.problem.spring.web.advice.security.SecurityProblemSupport;

import java.util.Map;
import java.util.Optional;

@Configuration
@Import(SecurityProblemSupport.class)
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class MicroserviceSecurityConfiguration extends ResourceServerConfigurerAdapter {

    private static final String OAUTH2_PRINCIPAL_ATTRIBUTE = "preferred_username";

    private static final String OAUTH2_AUTHORITIES_ATTRIBUTE = "roles";

    private final ResourceServerProperties resourceServerProperties;

    private final SecurityProblemSupport problemSupport;

    public MicroserviceSecurityConfiguration(ResourceServerProperties resourceServerProperties,
        SecurityProblemSupport problemSupport) {
        this.resourceServerProperties = resourceServerProperties;
        this.problemSupport = problemSupport;
    }

    @Bean
    @Primary
    public UserInfoTokenServices userInfoTokenServices(PrincipalExtractor principalExtractor, AuthoritiesExtractor authoritiesExtractor) {
        UserInfoTokenServices userInfoTokenServices =
        <%_ if (cacheProvider !== 'no') { _%>
            new CachedUserInfoTokenServices(resourceServerProperties.getUserInfoUri(), resourceServerProperties.getClientId());
        <%_ } else { _%>
            new UserInfoTokenServices(resourceServerProperties.getUserInfoUri(), resourceServerProperties.getClientId());
        <%_ } _%>

        userInfoTokenServices.setPrincipalExtractor(principalExtractor);
        userInfoTokenServices.setAuthoritiesExtractor(authoritiesExtractor);
        return userInfoTokenServices;
    }

    @Bean
    public PrincipalExtractor principalExtractor() {
        return new SimplePrincipalExtractor(OAUTH2_PRINCIPAL_ATTRIBUTE);
    }

    @Bean
    public AuthoritiesExtractor authoritiesExtractor() {
        return new SimpleAuthoritiesExtractor(OAUTH2_AUTHORITIES_ATTRIBUTE);
    }
<%_ if(applicationType === 'gateway') { _%>

    @Bean
    @Qualifier("authorizationHeaderRequestMatcher")
    public RequestMatcher authorizationHeaderRequestMatcher() {
        return new RequestHeaderRequestMatcher("Authorization");
    }
<%_ } _%>

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http
            .csrf()
            .disable()
            .exceptionHandling()
            .authenticationEntryPoint(problemSupport)
            .accessDeniedHandler(problemSupport)
        .and()
            .headers()
            .frameOptions()
            .disable()
        .and()
            .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
        .and()
<%_ if(applicationType === 'gateway') { _%>
            .requestMatcher(authorizationHeaderRequestMatcher())
<%_ } _%>
            .authorizeRequests()
            .antMatchers("/api/profile-info").permitAll()
            .antMatchers("/api/**").authenticated()
            .antMatchers("/management/health").permitAll()
            .antMatchers("/management/**").hasAuthority(AuthoritiesConstants.ADMIN);
    }

    @Bean
    @ConditionalOnProperty("security.oauth2.resource.jwt.key-uri")
    public TokenStore tokenStore(JwtAccessTokenConverter jwtAccessTokenConverter) {
        return new JwtTokenStore(jwtAccessTokenConverter);
    }

    @Bean
    @ConditionalOnProperty("security.oauth2.resource.jwt.key-uri")
    public JwtAccessTokenConverter jwtAccessTokenConverter() {
        JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
        converter.setVerifierKey(getKeyFromAuthorizationServer());
        return converter;
    }

    private String getKeyFromAuthorizationServer() {
        return Optional.ofNullable(
            new RestTemplate()
                .exchange(
                    resourceServerProperties.getJwt().getKeyUri(),
                    HttpMethod.GET,
                    new HttpEntity<Void>(new HttpHeaders()),
                    Map.class
                )
                .getBody()
                .get("public_key"))
            .map(publicKey -> String.format("-----BEGIN PUBLIC KEY-----\n%s\n-----END PUBLIC KEY-----", publicKey))
            .orElse(resourceServerProperties.getJwt().getKeyValue());
    }
}
<%_ } _%>