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CAS之5.2x版本自定义返回消息-yellowcong

程序员文章站 2022-05-05 12:17:58
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单点登录,默认是只返回登录的用户名,不会返回其他的信息,我们需要在这个基础上进行扩展,开发。配置自定义返回消息的时候,需要自定义表单处理,然后根据获取的结果来返回自定义数据。这种需求的应用场景就是,A系统登录,我想返回啥,B系统登录,我又想返回啥。这个就需要自定义了,而且还有默认系统返回的只有用户名,这个消息太少,兄弟们不得不进行扩展操作。扩展步骤:1、修改services文件夹的json配置,2、配置自定义认证类,并配置到springboot中。

项目地址

#客户端地址
https://gitee.com/yellowcong/springboot_cas/tree/master/cas-client-maven

#服务器端地址
https://gitee.com/yellowcong/springboot_cas/tree/master/cas-server-result

目录结构

服务端,主要是修改了services里面的子站点配置信息的返回策略,然后修改了自定义验证器里面的返回值。再次强调,服务器端和客户端的证书必须一致,不然会抛异常,说证书有问题
CAS之5.2x版本自定义返回消息-yellowcong

1、修改services配置

默认配置

配置HTTPSandIMAPS-10000001.json 文件,这个是cas默认的配置,如果我们的请求没有专门的配置,就会找这个配置了,这个配置^(http|https|imaps)://.*,表示我这个地方是啥客户端都接的,所以没问题啊,最好开发中,别这么搞,根据自己的域名来定义规则

{
  "@class" : "org.apereo.cas.services.RegexRegisteredService",
  "serviceId" : "^(http|https|imaps)://.*",
  "name" : "HTTPS and IMAPS",
  "id" : 10000001,
  "description" : "This service definition authorizes all application urls that support HTTPS and IMAPS protocols.",
  "evaluationOrder" : 10000,
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.services.ReturnAllAttributeReleasePolicy"
  }
}

对于某个站点配置

只有yellowcong.xx 的网站访问这个数据的时候,就会跳到这个模版

{
  "@class" : "org.apereo.cas.services.RegexRegisteredService",
  "serviceId" : "^(https|imaps|http)://yellowcong.*",
  "name" : "BaiDu",
  "id" : 10000002,
  "description" : "This service definition authorizes all application urls that supportBaiDu.",
  "evaluationOrder" : 1,
  "theme": "demo",
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.services.ReturnAllAttributeReleasePolicy"
  }
}

限制某些字段反回

"attributeReleasePolicy" : { "@class" : "org.apereo.cas.services.ReturnAllowedAttributeReleasePolicy", "allowedAttributes" : [ "java.util.ArrayList", [ "school", "email" ] ]
  }

服务端验证器修改

验证器,获取了数据库的数据后,存放到Map集合里面,然后返回结果到客户端。

Map<String,Object> result = new HashMap<String,Object>();
result.put("username", rs.getString("username"));
result.put("password", rs.getString("password"));
result.put("email", rs.getString("email"));
result.put("addr", rs.getString("addr"));
result.put("phone", rs.getString("phone"));
result.put("age", rs.getString("age"));
                //允许登录,并且通过this.principalFactory.createPrincipal来返回用户属性
                return createHandlerResult(credential, this.principalFactory.createPrincipal(username, result), null);

下面是完整代码

package com.yellowcong.auth.handler;

import java.security.GeneralSecurityException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import javax.security.auth.login.AccountLockedException;
import javax.security.auth.login.FailedLoginException;

import org.apereo.cas.authentication.Credential;
import org.apereo.cas.authentication.HandlerResult;
import org.apereo.cas.authentication.PreventedException;
import org.apereo.cas.authentication.UsernamePasswordCredential;
import org.apereo.cas.authentication.exceptions.AccountDisabledException;
import org.apereo.cas.authentication.exceptions.InvalidLoginLocationException;
import org.apereo.cas.authentication.handler.support.AbstractPreAndPostProcessingAuthenticationHandler;
import org.apereo.cas.authentication.principal.PrincipalFactory;
import org.apereo.cas.services.ServicesManager;
/**
 * @author yellowcong
 * 创建日期:2018/02/02
 *
 */
public class CustomerHandler extends AbstractPreAndPostProcessingAuthenticationHandler {

    public CustomerHandler(String name, ServicesManager servicesManager, PrincipalFactory principalFactory,
            Integer order) {
        super(name, servicesManager, principalFactory, order);
    }

    /**
     * 用于判断用户的Credential(换而言之,就是登录信息),是否是俺能处理的
     * 就是有可能是,子站点的登录信息中不止有用户名密码等信息,还有部门信息的情况
     */
    @Override
    public boolean supports(Credential credential) {
        //判断传递过来的Credential 是否是自己能处理的类型
        return credential instanceof UsernamePasswordCredential;
    }

    /**
     * 用于授权处理
     */
    @Override
    protected HandlerResult doAuthentication(Credential credential) throws GeneralSecurityException, PreventedException {
        UsernamePasswordCredential usernamePasswordCredentia = (UsernamePasswordCredential) credential;

        //获取传递过来的用户名和密码
        String username = usernamePasswordCredentia.getUsername();
        String password = usernamePasswordCredentia.getPassword();

        Connection conn = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");

            //直接是原生的数据库配置啊
            String url = "jdbc:mysql://127.0.0.1:3306/yellowcong";
            String user = "root";
            String pass = "root";

            conn = DriverManager.getConnection(url,user, pass);

            //查询语句
            String sql = "SELECT * FROM cas_user WHERE username =? AND PASSWORD = ?";
            PreparedStatement  ps = conn.prepareStatement(sql);
            ps.setString(1, username);
            ps.setString(2, password);

            ResultSet rs = ps.executeQuery();

            if(rs.next()) {
                //存放数据到里面
                Map<String,Object> result = new HashMap<String,Object>();
                result.put("username", rs.getString("username"));
                result.put("password", rs.getString("password"));
                result.put("email", rs.getString("email"));
                result.put("addr", rs.getString("addr"));
                result.put("phone", rs.getString("phone"));
                result.put("age", rs.getString("age"));
                //允许登录,并且通过this.principalFactory.createPrincipal来返回用户属性
                return createHandlerResult(credential, this.principalFactory.createPrincipal(username, result), null);
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally {
            if(conn != null) {
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
        //当是admin用户的情况,直接就登录了,谁叫他是admin用户呢
        if(username.startsWith("admin")) {
            //直接返回去了
            return createHandlerResult(credential, this.principalFactory.createPrincipal(username, Collections.emptyMap()), null);
        }else if (username.startsWith("lock")) {
            //用户锁定
            throw new AccountLockedException();
        } else if (username.startsWith("disable")) {
            //用户禁用
            throw new AccountDisabledException();
        } else if (username.startsWith("invali")) {
            //禁止登录该工作站登录
            throw new InvalidLoginLocationException();
        } else if (username.startsWith("passorwd")) {
            //密码错误
            throw new FailedLoginException();
        } else if (username.startsWith("account")) {
            //账号错误
            throw new AccountLockedException();
        }
        return null;
    }

}

客户端获取返回中,session的数据

客户端获取的数据,也是放在session里面的,直接就可以通过获取session中的_const_cas_assertion_字段获取到返回的用户登录的名称信息。通过request.getUserPrincipal(); 可以获取到用户的授权信息,也就是用户返回的字段信息。


//Object object =request.getSession().getAttribute("_const_cas_assertion_");
//Assertion assertion =(Assertion)object;

//获取cas给我们传递回来的对象,这个东西放到了session中
//session的 key是 _const_cas_assertion_
Assertion assertion = (Assertion) request.getSession().getAttribute(AbstractCasFilter.CONST_CAS_ASSERTION);  

//获取登录用户名
String loginName =assertion.getPrincipal().getName();
System.out.printf("登录用户名:%s\r\n",loginName);

//获取自定义返回值的数据
Principal principal  = (AttributePrincipal) request.getUserPrincipal();
if (request.getUserPrincipal() != null) {

    if (principal instanceof AttributePrincipal) {
        //cas传递过来的数据
        Map<String,Object> result =( (AttributePrincipal)principal).getAttributes();
        for(Map.Entry<String, Object> entry :result.entrySet()) {
            String key = entry.getKey();
            Object val = entry.getValue();
            System.out.printf("%s:%s\r\n",key,val);
        }
    }
}

验证

登录了数据库的账户和密码,然后,使用张三的用户密码进行登录,返回的是张三的用户信息。还带回了其他字段信息回来了。

CAS之5.2x版本自定义返回消息-yellowcong

相关标签: cas