build.gradle

@@ -37,10 +37,10 @@ dependencies {
     implementation group: 'org.springframework.boot', name: 'spring-boot-starter-thymeleaf'
     implementation group: 'org.springframework.boot', name: 'spring-boot-starter-validation'
     implementation group: 'org.springframework.boot', name:'spring-boot-starter-data-jpa'
-    //implementation group: 'org.springframework.boot', name: 'spring-boot-starter-security'
+    implementation group: 'org.springframework.boot', name: 'spring-boot-starter-security'
     implementation group: 'org.slf4j', name: 'slf4j-api', version: versionSLF4J
     implementation group: 'nz.net.ultraq.thymeleaf', name: 'thymeleaf-layout-dialect'
-    //implementation group: 'org.thymeleaf.extras', name: 'thymeleaf-extras-springsecurity5'
+    implementation group: 'org.thymeleaf.extras', name: 'thymeleaf-extras-springsecurity5'
     implementation group: 'com.h2database', name:'h2'
     implementation group: 'javax.xml.bind', name:'jaxb-api'
     implementation group: 'org.javassist', name:'javassist'

src/main/java/ru/ulstu/SeminarApplication.java

@@ -2,10 +2,25 @@ package ru.ulstu;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import ru.ulstu.user.UserService;
 
 @SpringBootApplication
 public class SeminarApplication {
+    private final UserService userService;
+
+    public SeminarApplication(UserService userService) {
+        this.userService = userService;
+    }
+
     public static void main(String[] args) {
         SpringApplication.run(SeminarApplication.class, args);
     }
+
+    @EventListener(ApplicationReadyEvent.class)
+    public void doSomethingAfterStartup() {
+        System.out.println("hello world, I have just started up");
+        userService.initDefaultAdmin();
+    }
 }

src/main/java/ru/ulstu/configuration/Constants.java

@@ -0,0 +1,12 @@
+package ru.ulstu.configuration;
+
+public class Constants {
+    public static final int MIN_PASSWORD_LENGTH = 6;
+
+    public static final String LOGIN_REGEX = "^[_'.@A-Za-z0-9-]*$";
+
+    public static final String COOKIES_NAME = "JSESSIONID";
+    public static final String LOGOUT_URL = "/login?logout";
+    public static final String SESSION_ID_ATTR = "sessionId";
+    public static final int SESSION_TIMEOUT_SECONDS = 30 * 60;
+}

src/main/java/ru/ulstu/configuration/MvcConfiguration.java

@@ -20,6 +20,8 @@ import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
 public class MvcConfiguration implements WebMvcConfigurer {
     @Override
     public void addViewControllers(ViewControllerRegistry registry) {
+        registry.addViewController("/login");
+        registry.addViewController("/loginError");
         registry.addViewController("/index");
         registry.addViewController("/admin");
         registry.addViewController("/editNews");

src/main/java/ru/ulstu/configuration/PasswordEncoderConfiguration.java

@@ -0,0 +1,13 @@
+package ru.ulstu.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+@Configuration
+public class PasswordEncoderConfiguration {
+    @Bean
+    public BCryptPasswordEncoder bCryptPasswordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}

src/main/java/ru/ulstu/configuration/SecurityConfiguration.java

@@ -0,0 +1,85 @@
+package ru.ulstu.configuration;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.BeanInitializationException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+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.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
+import ru.ulstu.model.UserRoleConstants;
+import ru.ulstu.user.UserService;
+
+@Configuration
+@EnableWebSecurity
+@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
+public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
+    private final Logger log = LoggerFactory.getLogger(SecurityConfiguration.class);
+
+    private final UserService userService;
+    private final BCryptPasswordEncoder bCryptPasswordEncoder;
+    private final AuthenticationSuccessHandler authenticationSuccessHandler;
+    private final LogoutSuccessHandler logoutSuccessHandler;
+
+    public SecurityConfiguration(UserService userService,
+                                 BCryptPasswordEncoder bCryptPasswordEncoder,
+                                 AuthenticationSuccessHandler authenticationSuccessHandler,
+                                 LogoutSuccessHandler logoutSuccessHandler) {
+        this.userService = userService;
+        this.bCryptPasswordEncoder = bCryptPasswordEncoder;
+        this.authenticationSuccessHandler = authenticationSuccessHandler;
+        this.logoutSuccessHandler = logoutSuccessHandler;
+    }
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        http.csrf().disable();
+        http.headers().frameOptions().disable();
+        log.debug("Security enabled");
+        http.authorizeRequests()
+                .antMatchers("/").permitAll()
+                .antMatchers("/login", "/index", "/news/**", "/h2-console/*", "/h2-console").permitAll()
+                .antMatchers("/swagger-ui.html").hasAuthority(UserRoleConstants.ADMIN)
+                .anyRequest().authenticated()
+                .and()
+                .formLogin()
+                .loginPage("/login")
+                .failureUrl("/loginError")
+                .successHandler(authenticationSuccessHandler)
+                .permitAll()
+                .and()
+                .logout()
+                .logoutSuccessHandler(logoutSuccessHandler)
+                .logoutSuccessUrl(Constants.LOGOUT_URL)
+                .invalidateHttpSession(false)
+                .clearAuthentication(true)
+                .deleteCookies(Constants.COOKIES_NAME)
+                .permitAll();
+    }
+
+    @Override
+    public void configure(WebSecurity web) {
+        web.ignoring()
+                .antMatchers("/css/**")
+                .antMatchers("/js/**")
+                .antMatchers("/img/**")
+                .antMatchers("/templates/**")
+                .antMatchers("/webjars/**");
+    }
+
+    @Autowired
+    public void configureGlobal(AuthenticationManagerBuilder auth) {
+        try {
+            auth.userDetailsService(userService).passwordEncoder(bCryptPasswordEncoder);
+        } catch (Exception e) {
+            throw new BeanInitializationException("Security configuration failed", e);
+        }
+    }
+}

src/main/java/ru/ulstu/configuration/TemplateConfiguration.java

@@ -7,11 +7,9 @@
 package ru.ulstu.configuration;
 
 import nz.net.ultraq.thymeleaf.LayoutDialect;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.MessageSource;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.context.support.ReloadableResourceBundleMessageSource;
+import org.thymeleaf.extras.springsecurity5.dialect.SpringSecurityDialect;
 import org.thymeleaf.spring5.SpringTemplateEngine;
 import org.thymeleaf.templateresolver.ITemplateResolver;
 
@@ -19,10 +17,11 @@ import org.thymeleaf.templateresolver.ITemplateResolver;
 public class TemplateConfiguration {
 
     @Bean
-    public SpringTemplateEngine templateEngine(ITemplateResolver templateResolver) {
+    public SpringTemplateEngine templateEngine(ITemplateResolver templateResolver, SpringSecurityDialect sec) {
         final SpringTemplateEngine templateEngine = new SpringTemplateEngine();
         templateEngine.addTemplateResolver(templateResolver);
         templateEngine.addDialect(new LayoutDialect());
+        templateEngine.addDialect(sec);
         return templateEngine;
     }
 }

src/main/java/ru/ulstu/controller/IndexController.java

@@ -22,7 +22,7 @@ public class IndexController {
 
     @GetMapping("/")
     public String index(Model model) {
-        model.addAttribute("news", newsService.getAll());
+        model.addAttribute("news", newsService.getLast());
         return "index";
     }
 }

src/main/java/ru/ulstu/controller/NewsController.java

@@ -13,12 +13,14 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
 import ru.ulstu.model.News;
 import ru.ulstu.service.NewsService;
 
 import javax.validation.Valid;
 
 @Controller
+@RequestMapping("news")
 public class NewsController {
     private final NewsService newsService;
 
@@ -26,6 +28,12 @@ public class NewsController {
         this.newsService = newsService;
     }
 
+    @GetMapping("/news")
+    public String index(Model model) {
+        model.addAttribute("news", newsService.getAll());
+        return "news";
+    }
+
     @GetMapping("/editNews/{newsId}")
     public String editNews(@PathVariable(value = "newsId") Integer id, Model model) {
         model.addAttribute("news", (id != null && id != 0) ? newsService.getById(id) : new News());
@@ -35,7 +43,7 @@ public class NewsController {
     @GetMapping("/news/{newsId}")
     public String viewNews(@PathVariable(value = "newsId") Integer id, Model model) {
         model.addAttribute("news", id != null ? newsService.getById(id) : new News());
-        return "news";
+        return "viewNews";
     }
 
     @PostMapping("saveNews")
@@ -45,12 +53,12 @@ public class NewsController {
         }
         newsService.save(news);
 
-        return "redirect:/";
+        return "redirect:/news/news";
     }
 
     @GetMapping("deleteNews/{newsId}")
     public String delete(@PathVariable(value = "newsId") Integer id) {
         newsService.delete(id);
-        return "redirect:/";
+        return "redirect:/news/news";
     }
 }

src/main/java/ru/ulstu/model/User.java

@@ -0,0 +1,71 @@
+package ru.ulstu.model;
+
+import ru.ulstu.configuration.Constants;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.ManyToMany;
+import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Pattern;
+import javax.validation.constraints.Size;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+@Table(name = "is_users")
+public class User extends BaseEntity {
+    @NotNull
+    @Pattern(regexp = Constants.LOGIN_REGEX)
+    @Size(min = 1, max = 50)
+    @Column(length = 50, unique = true, nullable = false)
+    private String login;
+
+    @NotNull
+    @Size(min = 60, max = 60)
+    @Column(name = "password_hash", length = 60, nullable = false)
+    private String password;
+
+    @ManyToMany
+    @JoinTable(
+            name = "is_user_role",
+            joinColumns = {@JoinColumn(name = "user_id", referencedColumnName = "id")},
+            inverseJoinColumns = {@JoinColumn(name = "user_role_name", referencedColumnName = "name")})
+    private Set<UserRole> roles;
+
+    public User() {
+        roles = new HashSet<>();
+    }
+
+    public User(String login, String password, Set<UserRole> roles) {
+        this.login = login;
+        this.password = password;
+        this.roles = roles;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    public void setLogin(String login) {
+        this.login = login.toLowerCase();
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public Set<UserRole> getRoles() {
+        return roles;
+    }
+
+    public void setRoles(Set<UserRole> roles) {
+        this.roles = roles;
+    }
+}

src/main/java/ru/ulstu/model/UserRole.java

@@ -0,0 +1,50 @@
+package ru.ulstu.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+
+@Entity
+@Table(name = "is_user_roles")
+public class UserRole {
+    @Id
+    @NotNull
+    @Size(max = 50)
+    @Column(length = 50, nullable = false)
+    private String name;
+
+    public UserRole() {
+    }
+
+    public UserRole(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        UserRole role = (UserRole) o;
+        return !(name != null ? !name.equals(role.name) : role.name != null);
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public int hashCode() {
+        return name != null ? name.hashCode() : 0;
+    }
+}

src/main/java/ru/ulstu/model/UserRoleConstants.java

@@ -0,0 +1,6 @@
+package ru.ulstu.model;
+
+public class UserRoleConstants {
+    public static final String ADMIN = "ROLE_ADMIN";
+    public static final String USER = "ROLE_USER";
+}

src/main/java/ru/ulstu/model/UserSession.java

@@ -0,0 +1,103 @@
+package ru.ulstu.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+import javax.validation.constraints.NotNull;
+import java.util.Date;
+
+@Entity
+@Table(name = "is_user_sessions")
+public class UserSession extends BaseEntity {
+    @NotNull
+    @Column(name = "session_id", nullable = false, unique = true)
+    private String sessionId;
+
+    @NotNull
+    @Column(name = "ip_address", nullable = false)
+    private String ipAddress;
+
+    @NotNull
+    @Column(nullable = false)
+    private String host;
+
+    @NotNull
+    @Column(name = "login_time", nullable = false)
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date loginTime;
+
+    @Column(name = "logout_time")
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date logoutTime;
+
+    @ManyToOne(optional = false)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    public UserSession() {
+    }
+
+    public UserSession(String sessionId, String ipAddress, String host, User user) {
+        this.sessionId = sessionId;
+        this.ipAddress = ipAddress;
+        this.host = host;
+        this.loginTime = new Date();
+        this.user = user;
+    }
+
+    public String getSessionId() {
+        return sessionId;
+    }
+
+    public String getIpAddress() {
+        return ipAddress;
+    }
+
+    public String getHost() {
+        return host;
+    }
+
+    public Date getLoginTime() {
+        return loginTime;
+    }
+
+    public Date getLogoutTime() {
+        return logoutTime;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setSessionId(String sessionId) {
+        this.sessionId = sessionId;
+    }
+
+    public void setIpAddress(String ipAddress) {
+        this.ipAddress = ipAddress;
+    }
+
+    public void setHost(String host) {
+        this.host = host;
+    }
+
+    public void setLoginTime(Date loginTime) {
+        this.loginTime = loginTime;
+    }
+
+    public void setLogoutTime(Date logoutTime) {
+        this.logoutTime = logoutTime;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+
+    public void close() {
+        this.logoutTime = new Date();
+    }
+}

src/main/java/ru/ulstu/repository/NewsRepository.java

@@ -3,5 +3,8 @@ package ru.ulstu.repository;
 import org.springframework.data.jpa.repository.JpaRepository;
 import ru.ulstu.model.News;
 
+import java.util.List;
+
 public interface NewsRepository extends JpaRepository<News, Integer> {
+    List<News> findFirst3ByOrderByDateDesc();
 }

src/main/java/ru/ulstu/service/NewsService.java

@@ -46,4 +46,8 @@ public class NewsService {
     public void delete(Integer id) {
         newsRepository.deleteById(id);
     }
+
+    public List<News> getLast() {
+        return newsRepository.findFirst3ByOrderByDateDesc();
+    }
 }

src/main/java/ru/ulstu/user/IpAddressResolver.java

@@ -0,0 +1,23 @@
+package ru.ulstu.user;
+
+import org.springframework.util.StringUtils;
+
+import javax.servlet.http.HttpServletRequest;
+
+public final class IpAddressResolver {
+    private static final String CLIENT_IP_HEADER = "Client-IP";
+    private static final String FORWARDED_FOR_HEADER = "X-Forwarded-For";
+
+    public static String getRemoteAddr(HttpServletRequest request) {
+        String headerClientIp = request.getHeader("");
+        String headerXForwardedFor = request.getHeader(HttpServletRequest.FORM_AUTH);
+        if (StringUtils.isEmpty(request.getRemoteAddr()) && !StringUtils.isEmpty(headerClientIp)) {
+            return headerClientIp;
+        }
+        if (!StringUtils.isEmpty(headerXForwardedFor)) {
+            return headerXForwardedFor;
+        }
+        return request.getRemoteAddr();
+    }
+
+}

src/main/java/ru/ulstu/user/UserNotFoundException.java

@@ -0,0 +1,7 @@
+package ru.ulstu.user;
+
+public class UserNotFoundException extends RuntimeException {
+    public UserNotFoundException(String message) {
+        super(message);
+    }
+}

src/main/java/ru/ulstu/user/UserRepository.java

@@ -0,0 +1,15 @@
+package ru.ulstu.user;
+
+import org.springframework.data.jpa.repository.EntityGraph;
+import org.springframework.data.jpa.repository.JpaRepository;
+import ru.ulstu.model.User;
+
+public interface UserRepository extends JpaRepository<User, Integer> {
+    User findOneByLoginIgnoreCase(String login);
+
+    @EntityGraph(attributePaths = "roles")
+    User findOneWithRolesById(int id);
+
+    @EntityGraph(attributePaths = "roles")
+    User findOneWithRolesByLogin(String login);
+}

src/main/java/ru/ulstu/user/UserRoleRepository.java

@@ -0,0 +1,7 @@
+package ru.ulstu.user;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import ru.ulstu.model.UserRole;
+
+public interface UserRoleRepository extends JpaRepository<UserRole, String> {
+}

src/main/java/ru/ulstu/user/UserService.java

@@ -0,0 +1,72 @@
+package ru.ulstu.user;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import ru.ulstu.model.User;
+import ru.ulstu.model.UserRole;
+import ru.ulstu.model.UserRoleConstants;
+
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@Service
+@Transactional
+public class UserService implements UserDetailsService {
+    private final Logger log = LoggerFactory.getLogger(UserService.class);
+    private final PasswordEncoder passwordEncoder;
+    private final UserRepository userRepository;
+    private final UserRoleRepository userRoleRepository;
+
+    public UserService(PasswordEncoder passwordEncoder,
+                       UserRepository userRepository,
+                       UserRoleRepository userRoleRepository) {
+        this.passwordEncoder = passwordEncoder;
+        this.userRepository = userRepository;
+        this.userRoleRepository = userRoleRepository;
+    }
+
+    public User getUserByLogin(String login) {
+        return userRepository.findOneByLoginIgnoreCase(login);
+    }
+
+    @Override
+    public UserDetails loadUserByUsername(String username) {
+        final User user = userRepository.findOneByLoginIgnoreCase(username);
+        if (user == null) {
+            throw new UserNotFoundException(username);
+        }
+        return new org.springframework.security.core.userdetails.User(user.getLogin(),
+                user.getPassword(),
+                Optional.ofNullable(user.getRoles()).orElse(Collections.emptySet()).stream()
+                        .map(role -> new SimpleGrantedAuthority(role.getName()))
+                        .collect(Collectors.toList()));
+    }
+
+    public User createUser(User user) {
+        if (getUserByLogin(user.getLogin()) != null) {
+            throw new RuntimeException(user.getLogin());
+        }
+        //user.setRoles(Collections.singleton(new UserRole(UserRoleConstants.USER)));
+        user.setPassword(passwordEncoder.encode(user.getPassword()));
+        user = userRepository.save(user);
+        log.debug("Created Information for User: {}", user.getLogin());
+        return user;
+    }
+
+    public void initDefaultAdmin() {
+        String adminLogin = "admin";
+        String adminPassword = "adminadmin";
+        if (getUserByLogin(adminLogin) == null) {
+            UserRole adminRole = userRoleRepository.save(new UserRole(UserRoleConstants.ADMIN));
+            createUser(new User(adminLogin, adminPassword, Set.of(adminRole)));
+        }
+    }
+}

src/main/java/ru/ulstu/user/UserSessionLoginHandler.java

@@ -0,0 +1,44 @@
+package ru.ulstu.user;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
+import org.springframework.stereotype.Component;
+import ru.ulstu.configuration.Constants;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+
+@Component
+public class UserSessionLoginHandler extends SavedRequestAwareAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
+    private final Logger log = LoggerFactory.getLogger(UserSessionLoginHandler.class);
+    private final UserSessionService userSessionService;
+
+    public UserSessionLoginHandler(UserSessionService userSessionService) {
+        super();
+        this.userSessionService = userSessionService;
+    }
+
+    @Override
+    public void onAuthenticationSuccess(HttpServletRequest request,
+                                        HttpServletResponse response,
+                                        Authentication authentication) throws IOException, ServletException {
+        super.onAuthenticationSuccess(request, response, authentication);
+        final String login = authentication.getName();
+        final String ipAddress = IpAddressResolver.getRemoteAddr(request);
+        final String host = request.getRemoteHost();
+        log.debug("Authentication Success for {}@{} ({})", login, ipAddress, host);
+        HttpSession session = request.getSession(false);
+        if (session != null) {
+            final String sessionId = session.getId();
+            userSessionService.createUserSession(sessionId, login, ipAddress, host);
+            session.setAttribute(Constants.SESSION_ID_ATTR, sessionId);
+            session.setMaxInactiveInterval(Constants.SESSION_TIMEOUT_SECONDS);
+        }
+    }
+}

src/main/java/ru/ulstu/user/UserSessionLogoutHandler.java

@@ -0,0 +1,48 @@
+package ru.ulstu.user;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
+import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
+import org.springframework.stereotype.Component;
+import ru.ulstu.configuration.Constants;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+
+@Component
+public class UserSessionLogoutHandler extends SimpleUrlLogoutSuccessHandler implements LogoutSuccessHandler {
+    private final Logger log = LoggerFactory.getLogger(UserSessionLogoutHandler.class);
+    private final UserSessionService userSessionService;
+
+    public UserSessionLogoutHandler(UserSessionService userSessionService) {
+        this.userSessionService = userSessionService;
+        setDefaultTargetUrl(Constants.LOGOUT_URL);
+    }
+
+    @Override
+    public void onLogoutSuccess(HttpServletRequest request,
+                                HttpServletResponse response,
+                                Authentication authentication) throws IOException, ServletException {
+        if (authentication == null) {
+            super.onLogoutSuccess(request, response, authentication);
+            return;
+        }
+        final String login = authentication.getName();
+        final String ipAddress = IpAddressResolver.getRemoteAddr(request);
+        final String host = request.getRemoteHost();
+        log.debug("Logout Success for {}@{} ({})", login, ipAddress, host);
+        HttpSession session = request.getSession(false);
+        if (session != null) {
+            final String sessionId = session.getAttribute(Constants.SESSION_ID_ATTR).toString();
+            userSessionService.closeUserSession(sessionId);
+            session.removeAttribute(Constants.SESSION_ID_ATTR);
+            session.invalidate();
+        }
+        super.onLogoutSuccess(request, response, authentication);
+    }
+}

src/main/java/ru/ulstu/user/UserSessionRepository.java

@@ -0,0 +1,13 @@
+package ru.ulstu.user;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import ru.ulstu.model.UserSession;
+
+import java.util.Date;
+import java.util.List;
+
+public interface UserSessionRepository extends JpaRepository<UserSession, Integer> {
+    UserSession findOneBySessionId(String sessionId);
+
+    List<UserSession> findAllByLogoutTimeIsNullAndLoginTimeBefore(Date date);
+}

src/main/java/ru/ulstu/user/UserSessionService.java

@@ -0,0 +1,40 @@
+package ru.ulstu.user;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import ru.ulstu.model.User;
+import ru.ulstu.model.UserSession;
+
+@Service
+@Transactional
+public class UserSessionService {
+    private final Logger log = LoggerFactory.getLogger(UserSessionService.class);
+    private final UserSessionRepository userSessionRepository;
+    private final UserService userService;
+
+    public UserSessionService(UserSessionRepository userSessionRepository, UserService userService) {
+        this.userSessionRepository = userSessionRepository;
+        this.userService = userService;
+    }
+
+    public void createUserSession(String sessionId, String login, String ipAddress, String host) {
+        final User user = userService.getUserByLogin(login);
+        if (user == null) {
+            throw new UserNotFoundException(login);
+        }
+        userSessionRepository.save(new UserSession(sessionId, ipAddress, host, user));
+        log.debug("User session {} created for user {}@{} ({})", sessionId, login, ipAddress, host);
+    }
+
+    public void closeUserSession(String sessionId) {
+        final UserSession userSession = userSessionRepository.findOneBySessionId(sessionId);
+        if (userSession == null) {
+            throw new IllegalArgumentException(String.format("User session %s not found", sessionId));
+        }
+        userSession.close();
+        userSessionRepository.save(userSession);
+        log.debug("User session {} closed", sessionId);
+    }
+}

src/main/java/ru/ulstu/user/UserUtils.java

@@ -0,0 +1,24 @@
+package ru.ulstu.user;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.core.userdetails.UserDetails;
+
+public class UserUtils {
+    public static String getCurrentUserLogin() {
+        final SecurityContext securityContext = SecurityContextHolder.getContext();
+        if (securityContext == null) {
+            return null;
+        }
+        final Authentication authentication = securityContext.getAuthentication();
+        if (authentication.getPrincipal() instanceof UserDetails) {
+            final UserDetails springSecurityUser = (UserDetails) authentication.getPrincipal();
+            return springSecurityUser.getUsername();
+        }
+        if (authentication.getPrincipal() instanceof String) {
+            return (String) authentication.getPrincipal();
+        }
+        return null;
+    }
+}

src/main/resources/public/css/main.css

@@ -29,6 +29,6 @@
     color: black;
 }
 
-.link-dark, .link-dark:visited, .link-dark:focus {
+.link-dark, .link-dark:visited, .link-dark:focus, .link-dark:any-link {
     color: black;
 }

src/main/resources/templates/admin.html

@@ -5,12 +5,10 @@
   -->
 
 <!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
-<html
-        xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
-        layout:decorate="~{default}">
+<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
 <div class="container" layout:fragment="content">
     <a href="/editNews/0" class="btn btn-outline-dark">
-        <i class="fa fa-plus-square" aria-hidden="true"> Добавить новость</i>
+        <i class="fa fa-plus-square" aria-hidden="true">Добавить новость</i>
     </a>
 </div>
 </html>

src/main/resources/templates/default.html

@@ -5,8 +5,9 @@
   -->
 
 <!DOCTYPE html>
-<html lang="ru"
-      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml">
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5"
+      xmlns:th="http://www.w3.org/1999/xhtml">
 <head>
     <meta charset="UTF-8"/>
     <title th:text="#{messages.app-name}">app-name</title>
@@ -32,7 +33,7 @@
     <div class="collapse navbar-collapse" id="navbarSupportedContent">
         <ul class="navbar-nav mr-auto">
             <li class="nav-item">
-                <a class="nav-link" href="/news">Новости</a>
+                <a class="nav-link" href="/news/news">Новости</a>
             </li>
             <li class="nav-item">
                 <a class="nav-link" href="/news">Заседания</a>
@@ -43,6 +44,12 @@
             <li class="nav-item">
                 <a class="nav-link" href="/admin">Администратору</a>
             </li>
+            <li>
+                <div sec:authorize="isAuthenticated()">
+                    <a class="nav-link" href="/logout">Выход</a>
+                </div>
+
+            </li>
         </ul>
     </div>
 </nav>

src/main/resources/templates/editNews.html

@@ -10,7 +10,7 @@
         layout:decorate="~{default}">
 <div class="container" layout:fragment="content">
     <h3>Редактирование новости:</h3>
-    <form action="#" th:action="@{/saveNews}" th:object="${news}" method="post">
+    <form action="#" th:action="@{/news/saveNews}" th:object="${news}" method="post">
         <input type="hidden" th:field="*{id}">
         <input type="hidden" th:field="*{date}">
         <input type="hidden" th:field="*{version}">

src/main/resources/templates/error/403.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<div class="container" layout:fragment="content">
+    <h5>Доступ запрещён</h5>
+    <a href="/"><h6>Вернуться на главную</h6></a>
+</div>
+</body>
+</html>

src/main/resources/templates/error/404.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<div class="container" layout:fragment="content">
+    <h5>Страница не найдена</h5>
+    <a href="/"><h6>Вернуться на главную</h6></a>
+</div>
+</body>
+</html>

src/main/resources/templates/error/500.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<div class="container" layout:fragment="content">
+    <h5>Ошибка сервера</h5>
+    <a href="/"><h6>Вернуться на главную</h6></a>
+</div>
+</body>
+</html>

src/main/resources/templates/index.html

@@ -5,8 +5,7 @@
   -->
 
 <!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
-<html
-        xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml"
+<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml"
       layout:decorate="~{default}">
 <div class="container" layout:fragment="content">
     <div th:each="n : ${news}" class="news">
@@ -17,16 +16,7 @@
             <div class="col-md-8">
                 <div class="row">
                     <div class="col-md-10">
-                        <a th:href="@{'/news/' + ${n.id}}" class="link-dark"><h5 th:text="${n.title}"/></a>
-                    </div>
-                    <div class="col-md-2" style="text-align: right">
-                        <a th:href="@{'/editNews/' + ${n.id}}" class="link-dark">
-                            <i class="fa fa-pencil" aria-hidden="true"></i>
-                        </a>
-                        <a th:href="@{'/deleteNews/' + ${n.id}}" class="link-dark"
-                           onclick="return confirm('Удалить новость?')">
-                            <i class="fa fa-trash" aria-hidden="true"></i>
-                        </a>
+                        <a th:href="@{'/news/news/' + ${n.id}}" class="link-dark"><h5 th:text="${n.title}"/></a>
                     </div>
                 </div>
                 <div th:text="${n.preview}" class="news-item"></div>

src/main/resources/templates/login.html

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:th="http://www.thymeleaf.org"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<nav layout:fragment="navbar">
+    <div class="navbar-header">
+        <a class="navbar-brand" href="/"><span class="ui-menuitem-text"><i
+                class="fa fa-plane fa-4" aria-hidden="true"></i> Balance</span></a>
+    </div>
+</nav>
+<div class="container" layout:fragment="content">
+    <div class="tab-content">
+        <div id="signin" class="tab-pane active">
+            <form th:action="@{/login}" method="post" class="margined-top-10">
+                <fieldset>
+                    <div class="form-group">
+                        <input type="text" name="username" id="username" class="form-control"
+                               placeholder="Логин" required="true" autofocus="true"/>
+                    </div>
+                    <div class="form-group">
+                        <input type="password" name="password" id="password" class="form-control"
+                               placeholder="Пароль" required="true"/>
+                    </div>
+                    <button type="submit" class="btn btn-outline-dark btn-block">Войти</button>
+                </fieldset>
+            </form>
+        </div>
+    </div>
+</div>
+</body>
+</html>

src/main/resources/templates/loginError.html

@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en"
+      xmlns:th="http://www.thymeleaf.org"
+      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+      layout:decorate="~{default}">
+<head>
+</head>
+<body>
+<nav layout:fragment="navbar">
+    <div class="navbar-header">
+        <a class="navbar-brand" href="/"><span class="ui-menuitem-text"><i
+                class="fa fa-plane fa-4" aria-hidden="true"></i> Balance</span></a>
+    </div>
+</nav>
+<div class="container" layout:fragment="content">
+    <div class="container-fluid">
+        <ul id="messages" class="feedback-panel">
+            <div class="alert alert-danger" role="alert">Ошибка входа</div>
+        </ul>
+    </div>
+    <div class="tab-content">
+        <div id="signin" class="tab-pane active">
+            <form th:action="@{/login}" method="post" class="margined-top-10">
+                <fieldset>
+                    <div class="form-group">
+                        <input type="text" name="username" id="username" class="form-control"
+                               placeholder="Логин" required="true" autofocus="true"/>
+                    </div>
+                    <div class="form-group">
+                        <input type="password" name="password" id="password" class="form-control"
+                               placeholder="Пароль" required="true"/>
+                    </div>
+                    <button type="submit" class="btn btn-outline-dark btn-block">Войти</button>
+                </fieldset>
+            </form>
+        </div>
+    </div>
+</div>
+</body>
+</html>

src/main/resources/templates/news.html

@@ -5,21 +5,36 @@
   -->
 
 <!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
-<html
-        xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml"
+<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml"
+      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5"
       layout:decorate="~{default}">
 <div class="container" layout:fragment="content">
+    <div th:each="n : ${news}" class="news">
         <div class="row">
             <div class="col-md-4">
                 <img class="news-image" src="/img/logo.svg"/>
             </div>
             <div class="col-md-8">
-            <h5 th:text="${news.title}"/>
-            <div th:text="${news.text}" class="news-item"></div>
+                <div class="row">
+                    <div class="col-md-10">
+                        <a th:href="@{'/news/news/' + ${n.id}}" class="link-dark"><h5 th:text="${n.title}"/></a>
+                    </div>
+                    <div sec:authorize="hasRole('ROLE_ADMIN')" class="col-md-2" style="text-align: right">
+                        <a th:href="@{'/news/editNews/' + ${n.id}}" class="link-dark">
+                            <i class="fa fa-pencil" aria-hidden="true"></i>
+                        </a>
+                        <a th:href="@{'/news/deleteNews/' + ${n.id}}" class="link-dark"
+                           onclick="return confirm('Удалить новость?')">
+                            <i class="fa fa-trash" aria-hidden="true"></i>
+                        </a>
                     </div>
                 </div>
-    <div th:text="${'Опубликовано: ' + #calendars.format(news.date, 'dd.MM.yyyy HH:mm')}"
+                <div th:text="${n.preview}" class="news-item"></div>
+            </div>
+        </div>
+        <div th:text="${'Опубликовано: ' + #calendars.format(n.date, 'dd.MM.yyyy HH:mm')}"
              class="news-date"></div>
-    <a href="javascript:history.back()" class="btn btn-outline-dark" style="text-align: right">Назад</a>
+        <hr/>
+    </div>
 </div>
 </html>

src/main/resources/templates/viewNews.html

@@ -0,0 +1,25 @@
+<!--
+  ~ Copyright (C) 2021 Anton Romanov - All Rights Reserved
+  ~ You may use, distribute and modify this code, please write to: romanov73@gmail.com.
+  ~
+  -->
+
+<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
+<html
+        xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:th="http://www.w3.org/1999/xhtml"
+        layout:decorate="~{default}">
+<div class="container" layout:fragment="content">
+    <div class="row">
+        <div class="col-md-4">
+            <img class="news-image" src="/img/logo.svg"/>
+        </div>
+        <div class="col-md-8">
+            <h5 th:text="${news.title}"/>
+            <div th:text="${news.text}" class="news-item"></div>
+        </div>
+    </div>
+    <div th:text="${'Опубликовано: ' + #calendars.format(news.date, 'dd.MM.yyyy HH:mm')}"
+         class="news-date"></div>
+    <a href="javascript:history.back()" class="btn btn-outline-dark" style="text-align: right">Назад</a>
+</div>
+</html>