package com.aaa.lee.shiro;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* Simple Quickstart application showing how to use Shiro's API.
*
* @since 0.9 RC2
*/
public class Quickstart {

private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);

public static void main(String\[\] args) {

    // The easiest way to create a Shiro SecurityManager with configured  
    // realms, users, roles and permissions is to use the simple INI config.  
    // We'll do that by using a factory that can ingest a .ini file and  
    // return a SecurityManager instance:

    // Use the shiro.ini file at the root of the classpath  
    // (file: and url: prefixes load from files and urls respectively):  
    /\*\*  
     \* 1.使用最简单的方式创建Shiro安全框架，需要通过配置INI配置文件进行配置realm，users，roles，permissions  
     \*      使用Factory<SecurityManager>工厂类加载根目录下的shiro.ini文件来构建SecurityManager对象  
     \*      SecurityManager:认证，授权，加密，session管理  
     \*      以下的所有操作都必须使用SecurityManager对象进行完整，也就是说都需要使用SecurityManager对象爱获取  
     \*  
     \*/  
    Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");  
    SecurityManager securityManager = factory.getInstance();

    // for this simple example quickstart, make the SecurityManager  
    // accessible as a JVM singleton.  Most applications wouldn't do this  
    // and instead rely on their container configuration or web.xml for  
    // webapps.  That is outside the scope of this simple quickstart, so  
    // we'll just do the bare minimum so you can continue to get a feel  
    // for things.  
    /\*\*  
     \*  
     \* 2.已经把SecurityManager对象创建出来，这个对象在JVM中是一个单例  
     \*      如果在真实的web环境中，需要在容器中配置web.xml/application.xml  
     \*  
     \*  
     \*/  
    SecurityUtils.setSecurityManager(securityManager);

    /\*\*  
     \* shiro所需要的环境已经搭建完毕  
     \*/  
    // Now that a simple Shiro environment is set up, let's see what you can do:

    /\*\*  
     \*  
     \* 3.通过securityManager获取到Subject对象  
     \*      Subject中封装了表单所提交的属性(User信息:按照官方要求不能存入密码)  
     \*  
     \*  
     \*/  
    // get the currently executing user:  
    Subject currentUser = SecurityUtils.getSubject();

    /\*\*  
     \*  
     \* 4.测试session  
     \*      通过Subject对象获取session对象然后进行测试  
     \*  
     \*/  
    // Do some stuff with a Session (no need for a web or EJB container!!!)  
    Session session = currentUser.getSession();  
    session.setAttribute("someKey", "aValue");  
    String value = (String) session.getAttribute("someKey");  
    if (value.equals("aValue")) {  
        log.info("Retrieved the correct value! \[" + value + "\]");  
    }

    // let's login the current user so we can check against roles and permissions:  
    /\*\*  
     \*  
     \* 5.认证阶段  
     \*      currentUser.isAuthenticated():返回true/false 查看当前对象是否已经处于认证创建  
     \*          如果是返回true，否则返回false  
     \*  
     \*  
     \*/  
    System.out.println("认证前-------->"+currentUser.isAuthenticated());  
    if (!currentUser.isAuthenticated()) {  
        /\*\*  
         \* 用户未处于登录状态  
         \* 6.创建出UsernamePasswordToken对象，该对象拥有两个参数username,password  
         \*/  
        UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");  
        // token.setRememberMe(true);  
        try {  
            /\*\*  
             \* 7.真正的认证方法  
             \*      调用了login方法  
             \*/  
            currentUser.login(token);  
        } catch (UnknownAccountException uae) {  
            System.out.println("UnknownAccountException---->表示用户不存在");  
            log.info("There is no user with username of " + token.getPrincipal());  
            return;  
        } catch (IncorrectCredentialsException ice) {  
            System.out.println("IncorrectCredentialsException------>表示密码错误");  
            log.info("Password for account " + token.getPrincipal() + " was incorrect!");  
            return;  
        } catch (LockedAccountException lae) {  
            System.out.println("LockedAccountException------>表示所登录的账号被锁定");  
            log.info("The account for username " + token.getPrincipal() + " is locked.  " +  
                    "Please contact your administrator to unlock it.");  
        }  
        // ... catch more exceptions here (maybe custom ones specific to your application?  
        catch (AuthenticationException ae) {  
            /\*\*  
             \* AuthenticationException是以上三个异常父类  
             \*/  
            //unexpected condition?  error?  
        }  
    }

    //say who they are:  
    //print their identifying principal (in this case, a username):  
    System.out.println("用户登录成功");  
    System.out.println("认证成功-------->"+currentUser.isAuthenticated());  
    /\*\*  
     \* currentUser.getPrincipal():获取的是用户名  
     \*/  
    log.info("User \[" + currentUser.getPrincipal() + "\] logged in successfully.");

    //test a role:  
    /\*\*  
     \* 8.测试角色  
     \*      currentUser.hasRole("schwartz"):返回值为true/false  
     \*          如果当前登录用户拥有该角色则返回true，否则返回false  
     \*/  
    if (currentUser.hasRole("book\_manager")) {  
        System.out.println("拥有schwartz角色");  
        log.info("May the Schwartz be with you!");  
        //return;  
    } else {  
        System.out.println("没有schwartz角色");  
        log.info("Hello, mere mortal.");  
    }

    /\*\*  
     \* 9.测试权限  
     \*      currentUser.isPermitted("lightsaber:wield"):返回true/false  
     \*          如果拥有权限返回true，否则返回false  
     \*/  
    //test a typed permission (not instance-level)  
    if (currentUser.isPermitted("book:delete")) {  
        System.out.println("可以对图书进行删除操作");  
        log.info("You may use a lightsaber ring.  Use it wisely.");  
        //return;  
    } else {  
        System.out.println("没有对图书操作权限");  
        log.info("Sorry, lightsaber rings are for schwartz masters only.");  
    }

    //a (very powerful) Instance Level permission:  
    if (currentUser.isPermitted("bookUser:query:book")) {  
        System.out.println("拥有操作！！！！");  
        log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +  
                "Here are the keys - have fun!");  
       // return;  
    } else {  
        log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");  
    }

    /\*\*  
     \* 10.Subjct主体对象调用logout()方法执行退出操作  
     \*/  
    //all done - log out!  
    currentUser.logout();  
    System.out.println("退出后-------->"+currentUser.isAuthenticated());

    System.exit(0);  
}  

}