Login: use `Referer` header to redirect after the successful login

3 files changed, 39 insertions, 20 deletions

diff --git a/src/main/java/com/juick/config/SecurityConfig.java b/src/main/java/com/juick/config/SecurityConfig.java
index f93e12a8..b16dc755 100644
--- a/src/main/java/com/juick/config/SecurityConfig.java
+++ b/src/main/java/com/juick/config/SecurityConfig.java
@@ -34,7 +34,9 @@ import org.springframework.security.config.http.SessionCreationPolicy;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.web.AuthenticationEntryPoint;
 import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
 import org.springframework.security.web.authentication.RememberMeServices;
+import org.springframework.security.web.authentication.SimpleUrlAuthenticationSuccessHandler;
 import org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices;
 import org.springframework.security.web.authentication.www.BasicAuthenticationEntryPoint;
 import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
@@ -126,30 +128,45 @@ public class SecurityConfig {
                         BasicAuthenticationFilter.class)
                 .authorizeHttpRequests(requests -> requests
                         .requestMatchers(HttpMethod.OPTIONS).permitAll()
-                        .requestMatchers("/api/", "/api/messages", "/api/avatar", "/api/messages/discussions",
-                                "/api/users", "/api/thread", "/api/tags", "/api/tlgmbtwbhk", "/api/fbwbhk",
-                                "/api/skypebotendpoint", "/api/_fblogin", "/api/_vklogin", "/api/_tglogin",
-                                "/api/_google", "/api/_applelogin", "/api/signup", "/api/inbox", "/api/events",
+                        .requestMatchers("/api/", "/api/messages", "/api/avatar",
+                                "/api/messages/discussions",
+                                "/api/users", "/api/thread", "/api/tags",
+                                "/api/tlgmbtwbhk", "/api/fbwbhk",
+                                "/api/skypebotendpoint", "/api/_fblogin",
+                                "/api/_vklogin", "/api/_tglogin",
+                                "/api/_google", "/api/_applelogin", "/api/signup",
+                                "/api/inbox", "/api/events",
                                 "/api/info/**",
                                 "/api/nodeinfo/2.0")
                         .permitAll()
                         .anyRequest().hasRole("USER"))
                 .anonymous(anonymous -> anonymous.principal(JuickUser.ANONYMOUS_USER)
                         .authorities(JuickUser.ANONYMOUS_AUTHORITY))
-                .httpBasic(httpBasic -> httpBasic.authenticationEntryPoint(juickAuthenticationEntryPoint()))
+                .httpBasic(httpBasic -> httpBasic
+                        .authenticationEntryPoint(juickAuthenticationEntryPoint()))
                 .cors(cors -> cors.configurationSource(corsConfigurationSource()))
-                .sessionManagement(sessionManagement -> sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
-                .exceptionHandling(exceptionHandling -> exceptionHandling.authenticationEntryPoint(juickAuthenticationEntryPoint()))
+                .sessionManagement(sessionManagement -> sessionManagement
+                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+                .exceptionHandling(exceptionHandling -> exceptionHandling
+                        .authenticationEntryPoint(juickAuthenticationEntryPoint()))
                 .csrf().disable()
                 .headers().defaultsDisabled().cacheControl();
         return http.build();
     }
 
     @Bean
+    public AuthenticationSuccessHandler successHandler() {
+        SimpleUrlAuthenticationSuccessHandler handler = new SimpleUrlAuthenticationSuccessHandler();
+        handler.setUseReferer(true);
+        return handler;
+    }
+
+    @Bean
     public SecurityFilterChain wwwChain(HttpSecurity http) throws Exception {
         http.addFilterBefore(wwwAuthenticationFilter(), BasicAuthenticationFilter.class)
                 .authorizeHttpRequests(authorize -> authorize
-                        .requestMatchers("/settings", "/pm/**", "/**/bl", "/_twitter", "/post", "/post2",
+                        .requestMatchers("/settings", "/pm/**", "/**/bl", "/_twitter", "/post",
+                                "/post2",
                                 "/comment")
                         .authenticated()
                         .requestMatchers("/actuator/**").hasRole("ADMIN")
@@ -168,10 +185,9 @@ public class SecurityConfig {
                         .logoutSuccessUrl("/")
                         .deleteCookies("hash", COOKIE_NAME))
                 .formLogin(form -> form.loginPage("/login")
-                         .defaultSuccessUrl("/")
-                        .loginProcessingUrl("/login")
                         .usernameParameter("username")
                         .passwordParameter("password")
+                        .successHandler(successHandler())
                         .failureUrl("/login?error=1")
                         .permitAll())
                 .csrf(csrf -> csrf.ignoringRequestMatchers("/settings/unsubscribe", "/h2-console/**"))
diff --git a/src/main/java/com/juick/www/VaryHandler.java b/src/main/java/com/juick/www/SiteAttributesHandler.java
index 6910823d..e06a2070 100644
--- a/src/main/java/com/juick/www/VaryHandler.java
+++ b/src/main/java/com/juick/www/SiteAttributesHandler.java
@@ -17,15 +17,21 @@
 
 package com.juick.www;
 
+import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
 import jakarta.servlet.http.HttpServletResponse;
 
 @ControllerAdvice
-public class VaryHandler {
+public class SiteAttributesHandler {
     @ModelAttribute
     public void setVaryResponseHeader(HttpServletResponse response) {
         response.setHeader("Vary", "Accept-Language");
     }
+    @ModelAttribute
+    public void setReturnPathAttribute(Model model) {
+        model.addAttribute("retpath", ServletUriComponentsBuilder.fromCurrentRequestUri().toUriString());
+    }
 }
diff --git a/src/main/java/com/juick/www/controllers/Site.java b/src/main/java/com/juick/www/controllers/Site.java
index a0b8c5b0..aa6d574d 100644
--- a/src/main/java/com/juick/www/controllers/Site.java
+++ b/src/main/java/com/juick/www/controllers/Site.java
@@ -46,6 +46,7 @@ import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
 import javax.inject.Inject;
 import java.net.URLEncoder;
@@ -96,10 +97,12 @@ public class Site {
     }
 
     @GetMapping("/login")
-    public String getloginForm(@Visitor User visitor, HttpSession session,
-            @RequestParam(required = false, defaultValue = "true") boolean redirect, ModelMap model) {
+    public String getloginForm(@Visitor User visitor,
+            @RequestParam(name = "retpath", required = false, defaultValue = "/") String retPath,
+            HttpSession session,
+            ModelMap model) {
         if (!visitor.isAnonymous()) {
-            return redirect ? "redirect:/" : "redirect:/login/success";
+            return String.format("redirect:%s", retPath);
         }
         model.addAttribute("visitor", visitor);
         model.addAttribute("tags", tagService.getPopularTags());
@@ -119,12 +122,6 @@ public class Site {
         return "views/login";
     }
 
-    @GetMapping("/login/success")
-    public String getSuccessLogin(@Visitor User visitor, ModelMap model) {
-        model.addAttribute("hash", userService.getHashByUID(visitor.getUid()));
-        return "views/login_success";
-    }
-
     @GetMapping("/")
     protected String doGet(@Visitor User visitor, Locale locale, @RequestParam(required = false) String tag,
             @RequestParam(name = "show", required = false) String paramShow,