package com.github.zhangkaitao.shiro.chapter20.realm;
import com.github.zhangkaitao.shiro.chapter20.codec.HmacSHA256Utils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
/**
* <p>User: Zhang Kaitao
* <p>Date: 14-2-26
* <p>Version: 1.0
*/
public class StatelessRealm extends AuthorizingRealm {
@Override
public boolean supports(AuthenticationToken token) {
//仅支持StatelessToken类型的Token
return token instanceof StatelessToken;
}
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
//根据用户名查找角色，请根据需求实现
String username = (String) principals.getPrimaryPrincipal();
SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
authorizationInfo.addRole("admin");
return authorizationInfo;
}
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
StatelessToken statelessToken = (StatelessToken) token;
String username = statelessToken.getUsername();
String key = getKey(username);//根据用户名获取密钥（和客户端的一样）
//在服务器端生成客户端参数消息摘要
String serverDigest = HmacSHA256Utils.digest(key, statelessToken.getParams());
System.out.println(statelessToken.getClientDigest());
System.out.println(serverDigest);
//然后进行客户端消息摘要和服务器端消息摘要的匹配
return new SimpleAuthenticationInfo(
username,
serverDigest,
getName());
}
private String getKey(String username) {//得到密钥，此处硬编码一个
if("admin".equals(username)) {
return "dadadswdewq2ewdwqdwadsadasd";
}
return null;
}
}