有没有相当于Thymelafs sec:authorize标签的Mustache

Question

我正在用ThymeLeaf模板移植一个应用程序以使用Mustache模板，但我没有找到移植ThymeLeaf的sec:authorize标签的好方法。有没有一种方法可以获得Mustache中的SecurityContext信息，就像Thymelaf Spring Security额外提供的信息一样？

<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
</dependency>

我想我可以使用@ControllerAdvice来注入这样的模型属性，但SecurityContextHolder.getContents().getAuthentication()为空。但是，我可以很好地检查HttpServletRequest对象上的角色。这似乎是一个时间问题，因为在我的主@Controller中，我可以访问Authentication对象。我可以提取主体名称，并且isAuthenticated()返回正确的值。以下是我尝试使用@ControllerAdvice:

package com.example;
import java.util.Map.Entry;
import java.util.stream.Stream;
import javax.servlet.http.HttpServletRequest;
import org.example.security.entity.UserRole;
import org.example.security.entity.UserRole.Role;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ModelAttribute;
@ControllerAdvice
public class TemplateAdvice {
private static String ANONYMOUS_USER = "anonymousUser";
private Authentication authentication;
private Object principal;
private String username;
private boolean isAuthenticated;
private boolean isAnonymous;
private HttpServletRequest request;
public TemplateAdvice() {
this.authentication = SecurityContextHolder.getContext()
.getAuthentication();
if (this.authentication != null) {
this.principal = this.authentication.getPrincipal();
this.username = this.authentication.getName();
}
this.isAnonymous = this.principal == null 
|| this.username.equals(ANONYMOUS_USER);
}
@ModelAttribute
public void addDefaultAttributes(HttpServletRequest request, 
Model model) {
this.request = request;
model.addAttribute("isAuthenticated", this.authentication.isAuthenticated());
model.addAttribute("isAnonymous", this.isAnonymous);
model.addAttribute("username", this.username);
model.addAttribute("isAuthenticated", hasAnyRole()); // hack
model.addAttribute("isAdminOrSuper", 
hasRole(UserRole.Role.ADMIN) 
|| hasRole(UserRole.Role.SUPER)); // this works
}
private boolean hasRole(Role role) {
return this.request.isUserInRole(role.name());
}
private boolean hasAnyRole() {
return Stream.of(UserRole.Role.values())
.anyMatch(role -> hasRole(role));
}
}

我正在使用取出contextPath和_csrf.token

spring.mustache.expose-request-attributes=true
spring.mustache.request-context-attribute=req

并希望一些安全上下文也能被类似地暴露出来。

我在谷歌上找不到太多例子。有没有一个好的方法来检查用户是否经过身份验证，以及他们在Mustache模板中扮演什么角色？

Answer 1

我确定其中一个问题是TemplateAdvice构造函数中没有解决安全上下文。在将其移动到addDefaultAttributes之后，一切都如预期的那样运行。以下是我现在的想法：

package com.example.authentication.server.controller;
import javax.servlet.http.HttpServletRequest;
import com.example.authentication.server.security.SecurityHelper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ModelAttribute;
@ControllerAdvice
public class TemplateAdvice {
private SecurityHelper securityHelper;
@ModelAttribute
public void addDefaultAttributes(HttpServletRequest request, Model model) {
securityHelper = new SecurityHelper(SecurityContextHolder.getContext());
model.addAttribute("isLoggedIn", securityHelper.isAuthenticated() 
&& !securityHelper.isAnonymous());
model.addAttribute("username", securityHelper.username());
model.addAttribute("isAdminOrSuper", securityHelper.isAdminOrSuper());
}
}

和对应的SecurityHelper类：

package com.example.authentication.server.security;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContext;
public class SecurityHelper {
public static enum Role {
ROLE_USER, ROLE_ADMIN;
}
private Collection<? extends GrantedAuthority> authorities = 
Collections.emptyList();
private Authentication authentication;
public SecurityHelper(SecurityContext context) {
authentication = context.getAuthentication();
if (authentication != null) {
authorities = authentication.getAuthorities();
}
}
public boolean isAuthenticated() {
return authentication == null ? false : authentication.isAuthenticated();
}
public boolean isAnonymous() {
return authentication == null ? true : 
authentication instanceof AnonymousAuthenticationToken;
}
public String username() {
return authentication == null ? "" : authentication.getName();
}
public boolean isAdminOrSuper() {
return hasAnyRole(Arrays.asList(Role.ROLE_ADMIN, Role.ROLE_SUPER));
}
/**
* Checks if user contains the given role.
* 
* @param role
*            A user role.
* @return True if the user contains the role.
*/
public boolean hasRole(Role role) {
return authorities == null ? false
: authorities.stream().anyMatch(authority -> 
authority.getAuthority().equals(role.name()));
}
/**
* Checks if a user contains at least one of the roles.
* 
* @param roles
*            A list of user roles.
* @return True if the user contains one of the roles.
*/
public boolean hasAnyRole(List<Role> roles) {
return roles.stream().anyMatch(role -> hasRole(role));
}
}

Answer 2

我刚刚为splash制作了一个入门版，以使用spring security的"基于表达式的访问控制"功能，请检查此处的代码：https://github.com/iceant/mustache-security-spring-boot-starter

以下是示例：

{{#sec:hasRole('ADMIN')}}<li>ADMIN CONTENT</li>{{/sec:hasRole('ADMIN')}}
{{#sec:hasRole('ADMIN') and hasRole('USER')}}<li>ADMIN & USER CONTENT</li>{{/sec:hasRole('ADMIN') and hasRole('USER')}}
{{#sec:hasAnyRole('ADMIN', 'USER')}}<li>ADMIN OR USER CONTENT</li>{{/sec:hasAnyRole('ADMIN', 'USER')}}
{{#sec:hasRole('USER')}}<li>USER CONTENT</li>{{/sec:hasRole('USER')}}
{{#sec:isAnonymous()}}<li>isAnonymous</li>{{/sec:isAnonymous()}}{{^sec:isAnonymous()}}<li>isAnonymous=false</li>{{/sec:isAnonymous()}}
{{#sec:isRememberMe()}}<li>isRememberMe</li>{{/sec:isRememberMe()}}{{^sec:isRememberMe()}}<li>isRememberMe=false</li>{{/sec:isRememberMe()}}
{{#sec:isAuthenticated()}}<li>isAuthenticated</li>{{/sec:isAuthenticated()}}
{{^sec:isAuthenticated()}}<li>isAuthenticated=false</li>{{/sec:isAuthenticated()}}
{{#sec:isFullyAuthenticated()}}<li>isFullyAuthenticated</li>{{/sec:isFullyAuthenticated()}}
{{^sec:isFullyAuthenticated()}}<li>isFullyAuthenticated=false</li>{{/sec:isFullyAuthenticated()}}
{{#sec:principal}}<li>principal={{username}}{{/sec:principal}}
{{#sec:authentication}}<li>authentication={{.}}{{/sec:authentication}}
{{#sec:permitAll}}<li>permitAll</li>{{/sec:permitAll}}
{{#sec:denyAll}}<li>denyAll</li>{{/sec:denyAll}}
{{^sec:denyAll}}<li>denyAll=false</li>{{/sec:denyAll}}
{{^sec:hasIpAddress('192.168.2.1')}}<li>hasIpAddress('192.168.2.1')=false</li>{{/sec:hasIpAddress('192.168.2.1')}}
{{#sec:isMember(3)}}<li>isMember(3){{/sec:isMember(3)}}
{{#sec:@webSecurity.check(authentication,request)}}<li>@webSecurity.check(authentication,request){{/sec:@webSecurity.check(authentication,request)}}