Overlay CasWebAppConfiguration, an exact copy of 6.2.8

Author: cslzchen

src/main/java/org/apereo/cas/config/CasWebAppConfiguration.java

@@ -0,0 +1,128 @@
+package org.apereo.cas.config;
+
+import org.apereo.cas.configuration.CasConfigurationProperties;
+
+import lombok.val;
+
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.context.config.annotation.RefreshScope;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.LocaleResolver;
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.handler.SimpleUrlHandlerMapping;
+import org.springframework.web.servlet.i18n.CookieLocaleResolver;
+import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
+import org.springframework.web.servlet.mvc.Controller;
+import org.springframework.web.servlet.mvc.ParameterizableViewController;
+import org.springframework.web.servlet.mvc.UrlFilenameViewController;
+import org.springframework.web.servlet.theme.ThemeChangeInterceptor;
+import org.springframework.web.servlet.view.RedirectView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Optional;
+
+/**
+ * This is {@link CasWebAppConfiguration}.
+ *
+ * @author Misagh Moayyed
+ * @since 5.0.0
+ */
+@Configuration(value = "casWebAppConfiguration", proxyBeanMethods = false)
+@EnableConfigurationProperties(CasConfigurationProperties.class)
+public class CasWebAppConfiguration implements WebMvcConfigurer {
+
+    @Autowired
+    private CasConfigurationProperties casProperties;
+
+    @Autowired
+    @Qualifier("localeChangeInterceptor")
+    private ObjectProvider<LocaleChangeInterceptor> localeChangeInterceptor;
+
+    @RefreshScope
+    @Bean
+    public ThemeChangeInterceptor themeChangeInterceptor() {
+        val bean = new ThemeChangeInterceptor();
+        bean.setParamName(casProperties.getTheme().getParamName());
+        return bean;
+    }
+
+    @ConditionalOnMissingBean(name = "localeResolver")
+    @Bean
+    public LocaleResolver localeResolver() {
+        val localeProps = casProperties.getLocale();
+        val localeCookie = localeProps.getCookie();
+
+        val resolver = new CookieLocaleResolver() {
+            @Override
+            protected Locale determineDefaultLocale(final HttpServletRequest request) {
+                val locale = request.getLocale();
+                if (StringUtils.isBlank(localeProps.getDefaultValue())
+                        || !locale.getLanguage().equals(localeProps.getDefaultValue())) {
+                    return locale;
+                }
+                return new Locale(localeProps.getDefaultValue());
+            }
+        };
+        resolver.setCookieDomain(localeCookie.getDomain());
+        resolver.setCookiePath(StringUtils.defaultIfBlank(localeCookie.getPath(), CookieLocaleResolver.DEFAULT_COOKIE_PATH));
+        resolver.setCookieHttpOnly(localeCookie.isHttpOnly());
+        resolver.setCookieSecure(localeCookie.isSecure());
+        resolver.setCookieName(StringUtils.defaultIfBlank(localeCookie.getName(), CookieLocaleResolver.DEFAULT_COOKIE_NAME));
+        resolver.setCookieMaxAge(localeCookie.getMaxAge());
+        resolver.setLanguageTagCompliant(true);
+        resolver.setRejectInvalidCookies(true);
+        return resolver;
+    }
+
+    @Bean
+    protected UrlFilenameViewController passThroughController() {
+        return new UrlFilenameViewController();
+    }
+
+    @Bean
+    protected Controller rootController() {
+        return new ParameterizableViewController() {
+            @Override
+            protected ModelAndView handleRequestInternal(final HttpServletRequest request,
+                                                         final HttpServletResponse response) {
+                val queryString = request.getQueryString();
+                val url = request.getContextPath() + "/login"
+                        + Optional.ofNullable(queryString).map(string -> '?' + string).orElse(StringUtils.EMPTY);
+                return new ModelAndView(new RedirectView(response.encodeURL(url)));
+            }
+        };
+    }
+
+    @Bean
+    public SimpleUrlHandlerMapping handlerMapping() {
+        val mapping = new SimpleUrlHandlerMapping();
+
+        val root = rootController();
+        mapping.setOrder(1);
+        mapping.setAlwaysUseFullPath(true);
+        mapping.setRootHandler(root);
+        val urls = new HashMap<String, Object>();
+        urls.put("/", root);
+
+        mapping.setUrlMap(urls);
+        return mapping;
+    }
+
+    @Override
+    public void addInterceptors(final InterceptorRegistry registry) {
+        registry.addInterceptor(localeChangeInterceptor.getObject())
+                .addPathPatterns("/**");
+    }
+}