Примеры к занятию по ACL

2026-06-20 11:14:34 +00:00 · 2024-03-16 10:58:12 +03:00
parent 5a65a8aeda
commit 1b99e26b43
23 changed files with 791 additions and 0 deletions
@@ -0,0 +1,99 @@
+# Программа JS Dev -> Java Dev
+
+## Первые шаги в Java
+
+### 1. Java HelloWorld
+- История языка
+- Основные концепции языка
+- Экосистема, установка. Какую версию выбрать?
+- Типы данных. Примитивы/классы
+- Hello World. Сборка и запуск приложений на Java
+
+### 2. ООП в Java
+- ООП
+- Классы, поля и методы
+- Модификаторы доступа.
+- Специализированные конструкции классов (интерфейс, enum)
+- аритектура на основе ООП
+- исключения
+
+### 3. Практическая Java. ДЗ
+- IDE
+- Code Convention
+- Инструменты сборки (maven)
+- Тестирование
+
+### 4. Generics. Collections
+
+### 5. Аннотации. Lombok
+
+### 6. Сборщик мусора, Java в Докер. ДЗ
+- Управление памятью
+- Основы Docker
+- Java в Docker (особенно память)
+
+### 7. Многопоточность в Java
+- Проблематика
+- Создание потоков
+- JMM
+- Управление потоками
+
+### 8. Функциональное программирование в Java
+- Лямбда функции
+- Функциональное программирование
+- Streams
+- Optional
+
+## SQL БД
+
+### 9. Основы реляционных БД. SQL
+- Концепция и архитектура реляционных БД
+- SQL. Основные приемы
+
+### 10. Java-SQLDB. ORM. ДЗ
+- SQL запросы в java (JDBC)
+- ORM. Hibernate
+
+## Прикладная Java
+
+### 11. Архитектура приложение (SOLID, Dependency Injection)
+- понятия Inversion of Control (IoC) и Dependency Injection (DI);
+- Что такое Spring
+
+### 12. Spring Framework. Основы
+- Создание приложений с помощью Spring
+- Spring Boot
+- Конфигурация
+
+### 13. Spring Framework. DB
+- Spring JDBC
+- Spring JPA
+- Магия Spring Data JPA
+- Тестирование
+
+### 14. Spring WEB (REST). ДЗ
+- Spring WEB
+- REST API
+- OpenAPI
+- Тестирование
+
+### 15. Spring Security
+- Архитектура
+- Аутентификация
+- Авторизация
+- Тестирование
+
+### 16. Spring Kafka
+- Архитектура Kafka
+- Интеграция Spring-приложения и Kafka
+- Тестирование
+
+### 17. Интеграционное тестирование ДЗ
+- Идеология
+- Gherkin, Cucumber
+- Selenium
+- Test Containers
+
+
+
+
@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-framework-26-acl</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.10</version>
+    </parent>
+
+    <properties>
+        <ehcache-core.version>2.6.11</ehcache-core.version>
+        <swagger.version>3.0.0</swagger.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>11</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+        <!-- Spring Security ACL и зависимости-->
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-acl</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.ehcache</groupId>
+            <artifactId>ehcache-core</artifactId>
+            <version>${ehcache-core.version}</version>
+            <type>jar</type>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context-support</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+
+<!--            <version>1.4.198</version>-->
+        </dependency>
+
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>1.6.9</version>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>
@@ -0,0 +1,14 @@
+package ru.otus.spring;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+
+@SpringBootApplication
+public class Main {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Main.class);
+    }
+}
@@ -0,0 +1,33 @@
+package ru.otus.spring.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "system_message")
+public class NoticeMessage {
+
+    @Id
+    @Column
+    private Integer id;
+    @Column
+    private String content;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+}
@@ -0,0 +1,4 @@
+package ru.otus.spring.model;
+
+public class Pack {
+}
@@ -0,0 +1,25 @@
+package ru.otus.spring.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.repository.query.Param;
+import org.springframework.security.access.prepost.PostAuthorize;
+import org.springframework.security.access.prepost.PostFilter;
+import org.springframework.security.access.prepost.PreAuthorize;
+import ru.otus.spring.model.NoticeMessage;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface NoticeMessageRepository extends JpaRepository<NoticeMessage, Integer> {
+
+    @PostFilter("hasPermission(filterObject, 'READ')")
+    List<NoticeMessage> findAll();
+
+    @PostAuthorize("hasPermission(returnObject, 'READ')")
+    NoticeMessage getById(Integer id);
+
+    @SuppressWarnings("unchecked")
+    @PreAuthorize("hasPermission(#noticeMessage, 'WRITE')")
+    NoticeMessage save(@Param("noticeMessage") NoticeMessage noticeMessage);
+
+}
@@ -0,0 +1,36 @@
+package ru.otus.spring.rest;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RestController;
+import ru.otus.spring.model.NoticeMessage;
+import ru.otus.spring.repository.NoticeMessageRepository;
+
+import java.util.List;
+
+@RestController
+public class NoticeMessageController {
+
+    private final NoticeMessageRepository repository;
+
+    public NoticeMessageController(NoticeMessageRepository repository) {
+        this.repository = repository;
+    }
+
+    @GetMapping("/message")
+    public List<NoticeMessage> getAll() {
+        return repository.findAll();
+    }
+
+    @GetMapping("/message/{id}")
+    public NoticeMessage getById(@PathVariable("id") Integer id) {
+        var result = repository.getById( id );
+        return result;
+    }
+
+    @PutMapping("/message")
+    public NoticeMessage getById(NoticeMessage message) {
+        return repository.save(message);
+    }
+}
@@ -0,0 +1,79 @@
+package ru.otus.spring.security;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.ehcache.EhCacheFactoryBean;
+import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
+import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler;
+import org.springframework.security.acls.AclPermissionCacheOptimizer;
+import org.springframework.security.acls.AclPermissionEvaluator;
+import org.springframework.security.acls.domain.*;
+import org.springframework.security.acls.jdbc.BasicLookupStrategy;
+import org.springframework.security.acls.jdbc.JdbcMutableAclService;
+import org.springframework.security.acls.jdbc.LookupStrategy;
+import org.springframework.security.acls.model.PermissionGrantingStrategy;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+
+import javax.sql.DataSource;
+import java.util.Objects;
+
+@Configuration
+public class AclConfig {
+
+    @SuppressWarnings("SpringJavaAutowiredFieldsWarningInspection")
+    @Autowired
+    private DataSource dataSource;
+
+    @Bean
+    public EhCacheBasedAclCache aclCache() {
+        return new EhCacheBasedAclCache(
+                Objects.requireNonNull(aclEhCacheFactoryBean().getObject()),
+                permissionGrantingStrategy(),
+                aclAuthorizationStrategy()
+        );
+    }
+
+    @Bean
+    public EhCacheFactoryBean aclEhCacheFactoryBean() {
+        EhCacheFactoryBean ehCacheFactoryBean = new EhCacheFactoryBean();
+        ehCacheFactoryBean.setCacheManager(aclCacheManager().getObject());
+        ehCacheFactoryBean.setCacheName("aclCache");
+        return ehCacheFactoryBean;
+    }
+
+    @Bean
+    public EhCacheManagerFactoryBean aclCacheManager() {
+        return new EhCacheManagerFactoryBean();
+    }
+
+    @Bean
+    public PermissionGrantingStrategy permissionGrantingStrategy() {
+        return new DefaultPermissionGrantingStrategy(new ConsoleAuditLogger());
+    }
+
+    @Bean
+    public AclAuthorizationStrategy aclAuthorizationStrategy() {
+        return new AclAuthorizationStrategyImpl(new SimpleGrantedAuthority("ROLE_EDITOR"));
+    }
+
+    @Bean
+    public MethodSecurityExpressionHandler defaultMethodSecurityExpressionHandler() {
+        DefaultMethodSecurityExpressionHandler expressionHandler = new DefaultMethodSecurityExpressionHandler();
+        AclPermissionEvaluator permissionEvaluator = new AclPermissionEvaluator(aclService());
+        expressionHandler.setPermissionEvaluator(permissionEvaluator);
+        expressionHandler.setPermissionCacheOptimizer(new AclPermissionCacheOptimizer(aclService()));
+        return expressionHandler;
+    }
+
+    @Bean
+    public LookupStrategy lookupStrategy() {
+        return new BasicLookupStrategy(dataSource, aclCache(), aclAuthorizationStrategy(), new ConsoleAuditLogger());
+    }
+
+    @Bean
+    public JdbcMutableAclService aclService() {
+        return new JdbcMutableAclService(dataSource, lookupStrategy(), aclCache());
+    }
+}
@@ -0,0 +1,22 @@
+package ru.otus.spring.security;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.access.expression.method.MethodSecurityExpressionHandler;
+import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
+import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration;
+
+@Configuration
+@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
+public class AclMethodSecurityConfiguration extends GlobalMethodSecurityConfiguration {
+
+    @SuppressWarnings("SpringJavaAutowiredFieldsWarningInspection")
+    @Autowired
+    MethodSecurityExpressionHandler defaultMethodSecurityExpressionHandler;
+
+    @Override
+    protected MethodSecurityExpressionHandler createExpressionHandler() {
+        return defaultMethodSecurityExpressionHandler;
+    }
+
+}
@@ -0,0 +1,42 @@
+package ru.otus.spring.security;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.SecurityFilterChain;
+
+import java.util.ArrayList;
+
+@EnableWebSecurity
+public class SecurityConfiguration {
+
+    @Bean
+    public SecurityFilterChain securityFilterChain( HttpSecurity http ) throws Exception {
+        http
+                .csrf().disable()
+                .authorizeHttpRequests( ( authorize ) -> authorize
+                        .antMatchers( "/**", "/" ).permitAll()
+                )
+                .formLogin();
+        return http.build();
+    }
+
+    @Bean
+    public InMemoryUserDetailsManager userDetailsService() {
+        var users = new ArrayList<UserDetails>();
+        users.add( User
+                .withDefaultPasswordEncoder().username( "admin" ).password( "password" ).roles( "EDITOR" )
+                .build() );
+        users.add( User
+                .withDefaultPasswordEncoder().username( "user" ).password( "password" ).roles( "USER" )
+                .build() );
+        users.add( User
+                .withDefaultPasswordEncoder().username( "someone" ).password( "password" ).roles( "SOMEONE" )
+                .build() );
+        return new InMemoryUserDetailsManager( users );
+
+    }
+}
@@ -0,0 +1,44 @@
+package ru.otus.spring.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.acls.domain.BasePermission;
+import org.springframework.security.acls.domain.GrantedAuthoritySid;
+import org.springframework.security.acls.domain.ObjectIdentityImpl;
+import org.springframework.security.acls.domain.PrincipalSid;
+import org.springframework.security.acls.model.MutableAcl;
+import org.springframework.security.acls.model.MutableAclService;
+import org.springframework.security.acls.model.ObjectIdentity;
+import org.springframework.security.acls.model.Sid;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import ru.otus.spring.model.NoticeMessage;
+import ru.otus.spring.repository.NoticeMessageRepository;
+
+@Service
+public class NoticeService {
+    @Autowired
+    protected MutableAclService mutableAclService;
+
+    @Autowired
+    private NoticeMessageRepository repository;
+
+
+    public void add( NoticeMessage noticeMessage ) {
+        repository.save( noticeMessage );
+        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+        final Sid owner = new PrincipalSid( authentication );
+        ObjectIdentity oid = new ObjectIdentityImpl( noticeMessage );
+
+        final Sid admin = new GrantedAuthoritySid("ROLE_EDITOR");
+
+        MutableAcl acl = mutableAclService.createAcl( oid );
+        acl.setOwner( owner );
+        acl.insertAce( acl.getEntries().size(), BasePermission.ADMINISTRATION, admin, true );
+
+        mutableAclService.updateAcl( acl );
+
+
+    }
+}
@@ -0,0 +1,13 @@
+spring:
+  h2:
+    console:
+      enabled: true
+  jpa:
+    hibernate:
+      ddl-auto: none
+  datasource:
+    url: jdbc:h2:mem:testdb
+
+springdoc:
+  packages-to-scan: ru.otus.spring.rest
+  paths-to-match: /**
@@ -0,0 +1,28 @@
+INSERT INTO system_message(id,content) VALUES
+(1,'First Level Message'),
+(2,'Second Level Message'),
+(3,'Third Level Message');
+
+
+INSERT INTO acl_sid (id, principal, sid) VALUES
+(1, 1, 'admin'),
+(2, 1, 'user'),
+(3, 0, 'ROLE_EDITOR');
+
+INSERT INTO acl_class (id, class) VALUES
+(1, 'ru.otus.spring.model.NoticeMessage');
+
+INSERT INTO acl_object_identity (id, object_id_class, object_id_identity, parent_object, owner_sid, entries_inheriting) VALUES
+(1, 1, 1, NULL, 3, 0),
+(2, 1, 2, NULL, 3, 0),
+(3, 1, 3, NULL, 3, 0);
+
+INSERT INTO acl_entry (id, acl_object_identity, ace_order, sid, mask,
+                       granting, audit_success, audit_failure) VALUES
+(1, 1, 1, 1, 1, 1, 1, 1),
+(2, 1, 2, 1, 2, 1, 1, 1),
+(3, 1, 3, 3, 1, 1, 1, 1),
+(4, 2, 1, 2, 1, 1, 1, 1),
+(5, 2, 2, 3, 1, 1, 1, 1),
+(6, 3, 1, 3, 1, 1, 1, 1),
+(7, 3, 2, 3, 2, 1, 1, 1);
@@ -0,0 +1,58 @@
+create table IF NOT EXISTS system_message (id integer not null, content varchar(255), primary key (id));
+
+CREATE TABLE IF NOT EXISTS acl_sid (
+  id bigint(20) NOT NULL AUTO_INCREMENT,
+  principal tinyint(1) NOT NULL,
+  sid varchar(100) NOT NULL,
+  PRIMARY KEY (id),
+  UNIQUE KEY unique_uk_1 (sid,principal)
+);
+
+CREATE TABLE IF NOT EXISTS acl_class (
+  id bigint(20) NOT NULL AUTO_INCREMENT,
+  class varchar(255) NOT NULL,
+  PRIMARY KEY (id),
+  UNIQUE KEY unique_uk_2 (class)
+);
+ 
+CREATE TABLE IF NOT EXISTS acl_entry (
+  id bigint(20) NOT NULL AUTO_INCREMENT,
+  acl_object_identity bigint(20) NOT NULL,
+  ace_order int(11) NOT NULL,
+  sid bigint(20) NOT NULL,
+  mask int(11) NOT NULL,
+  granting tinyint(1) NOT NULL,
+  audit_success tinyint(1) NOT NULL,
+  audit_failure tinyint(1) NOT NULL,
+  PRIMARY KEY (id),
+  UNIQUE KEY unique_uk_4 (acl_object_identity,ace_order)
+);
+ 
+CREATE TABLE IF NOT EXISTS acl_object_identity (
+  id bigint(20) NOT NULL AUTO_INCREMENT,
+  object_id_class bigint(20) NOT NULL,
+  object_id_identity bigint(20) NOT NULL,
+  parent_object bigint(20) DEFAULT NULL,
+  owner_sid bigint(20) DEFAULT NULL,
+  entries_inheriting tinyint(1) NOT NULL,
+  PRIMARY KEY (id),
+  UNIQUE KEY unique_uk_3 (object_id_class,object_id_identity)
+);
+ 
+ALTER TABLE acl_entry
+ADD FOREIGN KEY (acl_object_identity) REFERENCES acl_object_identity(id);
+
+ALTER TABLE acl_entry
+ADD FOREIGN KEY (sid) REFERENCES acl_sid(id);
+ 
+--
+-- Constraints for table acl_object_identity
+--
+ALTER TABLE acl_object_identity
+ADD FOREIGN KEY (parent_object) REFERENCES acl_object_identity (id);
+
+ALTER TABLE acl_object_identity
+ADD FOREIGN KEY (object_id_class) REFERENCES acl_class (id);
+
+ALTER TABLE acl_object_identity
+ADD FOREIGN KEY (owner_sid) REFERENCES acl_sid (id);
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+</head>
+<body>
+Вам доступ запрещён!
+</body>
+</html>
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8"/>
+</head>
+<body>
+<a th:href="@{login}">login</a>
+<br>
+<a th:href="@{logout}">logout</a>
+<br>
+<a th:href="@{h2-console}">h2-console</a>
+<br>
+<a th:href="@{swagger-ui.html}">/swagger</a>
+</body>
+</html>
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-framework-27-oauth</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.10</version>
+    </parent>
+
+    <properties>
+        <ehcache-core.version>2.6.11</ehcache-core.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-oauth2-client</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+
+
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>1.6.9</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.webjars</groupId>
+            <artifactId>jquery</artifactId>
+            <version>3.4.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.webjars</groupId>
+            <artifactId>bootstrap</artifactId>
+            <version>4.3.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.webjars</groupId>
+            <artifactId>webjars-locator-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.webjars</groupId>
+            <artifactId>js-cookie</artifactId>
+            <version>2.1.0</version>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>
@@ -0,0 +1,13 @@
+package ru.otus.spring.sso;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GithubApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run( GithubApplication.class, args);
+	}
+
+}
@@ -0,0 +1,13 @@
+package ru.otus.spring.sso.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class IndexController {
+
+    @GetMapping("/")
+    public String indexPage() {
+        return "index";
+    }
+}
@@ -0,0 +1,17 @@
+package ru.otus.spring.sso.controller;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.security.oauth2.core.user.OAuth2User;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Collections;
+import java.util.Map;
+
+@RestController
+public class UserController {
+    @GetMapping("/user")
+    public Map<String, Object> user( @AuthenticationPrincipal OAuth2User principal) {
+        return Collections.singletonMap("name", principal.getAttribute("name"));
+    }
+}
@@ -0,0 +1,26 @@
+package ru.otus.spring.sso.security;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.web.authentication.HttpStatusEntryPoint;
+
+public class SecurityConfig extends WebSecurityConfigurerAdapter {
+    @Override
+    protected void configure( HttpSecurity http ) throws Exception {
+        http
+                .authorizeRequests( a -> a
+                        .antMatchers( "/", "/error", "/webjars/**" ).permitAll()
+                        .anyRequest().authenticated()
+                )
+                .exceptionHandling( e -> e
+                        .authenticationEntryPoint( new HttpStatusEntryPoint( HttpStatus.UNAUTHORIZED ) )
+                )
+                .csrf().disable()
+                .logout( l -> l
+                        .logoutSuccessUrl( "/" ).permitAll()
+                )
+
+                .oauth2Login();
+    }
+}
@@ -0,0 +1,13 @@
+spring:
+  security:
+    oauth2:
+      client:
+        registration:
+          github:
+            clientId: b08e2b651985f2440b7f
+            clientSecret: 891acf5785a5af14ebe4827c0d9606b3385304cd
+
+logging:
+  level:
+    root: error
+    org.springframework.security: DEBUG
@@ -0,0 +1,18 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8"/>
+    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+    <title>Demo</title>
+    <meta name="description" content=""/>
+    <meta name="viewport" content="width=device-width"/>
+    <base href="/"/>
+    <link rel="stylesheet" type="text/css" href="/webjars/bootstrap/css/bootstrap.min.css"/>
+    <script type="text/javascript" src="/webjars/jquery/jquery.min.js"></script>
+    <script type="text/javascript" src="/webjars/bootstrap/js/bootstrap.min.js"></script>
+</head>
+<body>
+<h1>Demo</h1>
+<div class="container"></div>
+</body>
+</html>