如何在Spring安全中集成JCaptcha

Question

在开始回答之前，我知道有一个更简单、更容易的ReCaptcha，但是我不能使用它。生产服务器没有联机。所以我们开始吧。

我使用Spring 3，在maven项目和weblogic上使用spring安全性作为web服务器(开发时丢弃)。我会在这件事上讲得很具体。

在查看我的配置和文件之前，我想向您展示我的问题列表：

• 在ReCaptcha之前，我尝试过使用相同的编码结构的JCaptcha，它工作得很好。
• logger.debug根本不出现在CaptchaCaptureFilter类和/或CaptchaVerifierFilter类中(而在ArtajasaAuthenticationProvider类中)。
• 我可以看到captcha图像，但是不管答案是什么，它总是无效的。
• 在当前状态下，它不能在jetty或weblogic中工作，但是如果我将自定义筛选器位置更改为下面的位置，它只在jetty中工作。

谢谢收看，非常感谢你回答我的问题。下面是详细情况。

JCaptcha的存储库是这样的：

<repository>
        <id>sourceforge-releases</id>
        <name>Sourceforge Releases</name>
        <url>https://oss.sonatype.org/content/repositories/sourceforge-releases</url>
    </repository>

<dependency>
        <groupId>com.octo.captcha</groupId>
        <artifactId>jcaptcha-integration-simple-servlet</artifactId>
        <version>2.0-alpha-1</version>
    </dependency>

下面是我在.xml文件中所做的一些配置：

web.xml

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/applicationContext.xml
        /WEB-INF/spring/spring-security.xml
    </param-value>
</context-param>
 <listener>
    <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>

<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>

<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>REQUEST</dispatcher>
</filter-mapping>

<servlet>
    <servlet-name>jcaptcha</servlet-name>
    <servlet-class>com.octo.captcha.module.servlet.image.SimpleImageCaptchaServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>jcaptcha</servlet-name>
    <url-pattern>/jcaptcha.jpg</url-pattern>
</servlet-mapping>

spring-security.xml

<http auto-config="true" use-expressions="true">
    <intercept-url pattern="/resources/**" access="permitAll()" />
    <intercept-url pattern="/jcaptcha.jpg" access="permitAll()" />
    <intercept-url pattern="/**" access="isAuthenticated()" />

    <form-login login-page="/session/login/" default-target-url="/"
                authentication-failure-url="/session/loginfailed/" />
    <logout logout-success-url="/session/logout/" />
    <access-denied-handler error-page="/session/403/" />

    <!--JCaptcha Filtering-->
    <custom-filter ref="captchaCaptureFilter" before="FORM_LOGIN_FILTER"/>
    <custom-filter ref="captchaVerifierFilter" after="FORM_LOGIN_FILTER"/>
    <anonymous />
</http>

<!-- For capturing CAPTCHA fields -->
<beans:bean id="captchaCaptureFilter" class="com.util.CaptchaCaptureFilter" />

<!-- For verifying CAPTCHA fields -->
<!-- Private key is assigned by the JCaptcha service -->
<beans:bean id="captchaVerifierFilter" class="com.util.CaptchaVerifierFilter"
      p:failureUrl="/session/loginfailed/"
      p:captchaCaptureFilter-ref="captchaCaptureFilter"/>

<beans:bean id="customAuthFilter" class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
    <beans:property name="sessionAuthenticationStrategy" ref="sas"/>
    <beans:property name="authenticationManager" ref="authenticationManager" />
    <beans:property name="allowSessionCreation" value="true" />
</beans:bean>

<beans:bean id="sas" class="org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy">
    <beans:constructor-arg name="sessionRegistry" ref="sessionRegistry"/>
    <beans:property name="maximumSessions" value="1" />
</beans:bean>

<beans:bean id="sessionRegistry" class="org.springframework.security.core.session.SessionRegistryImpl" />

<beans:bean id="userService" class="com.service.mybatis.UserManager" />

<beans:bean id="customAuthenticationProvider" class="com.util.ArtajasaAuthenticationProvider" />
<authentication-manager alias="authenticationManager">
    <authentication-provider ref="customAuthenticationProvider" />
</authentication-manager>

<beans:bean id="accessDeniedHandler" class="com.util.ThouShaltNoPass">
    <beans:property name="accessDeniedURL" value="/session/403/" />
</beans:bean>

这些是java类：

ArtajasaAuthenticationProvider.java

public class ArtajasaAuthenticationProvider implements AuthenticationProvider {

@Autowired
private UserService userService;
private Logger logger = LoggerFactory.getLogger(ArtajasaAuthenticationProvider.class);

@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
    String username = String.valueOf(authentication.getPrincipal());
    String password = String.valueOf(authentication.getCredentials());
    logger.debug("Checking authentication for user {}", username);
    if (StringUtils.isBlank(username)
            || StringUtils.isBlank(password)) {
        throw new BadCredentialsException("No Username and/or Password Provided.");
    } else {
        Pengguna user = userService.select(username);
        if (user == null) {
            throw new BadCredentialsException("Invalid Username and/or Password.");
        }
        if (user.getPassword().equals(new PasswordUtil().generateHash(password, user.getSalt()))) {
            List<GrantedAuthority> authorityList = (List<GrantedAuthority>) userService.getAuthorities(user);
            return new UsernamePasswordAuthenticationToken(username, password, authorityList);
        } else {
            throw new BadCredentialsException("Invalid Username and/or Password.");
        }
    }
}

@Override
public boolean supports(Class<?> authentication) {
    return (UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication));
}
}

CaptchaCaptureFilter.java

public class CaptchaCaptureFilter extends OncePerRequestFilter {

protected Logger logger = Logger.getLogger(CaptchaCaptureFilter.class);
private String userCaptchaResponse;
private HttpServletRequest request;

@Override
public void doFilterInternal(HttpServletRequest req, HttpServletResponse res,
                             FilterChain chain) throws IOException, ServletException {

    logger.debug("Captcha capture filter");

    // Assign values only when user has submitted a Captcha value.
    // Without this condition the values will be reset due to redirection
    // and CaptchaVerifierFilter will enter an infinite loop
    if (req.getParameter("jcaptcha") != null) {
        request = req;
        userCaptchaResponse = req.getParameter("jcaptcha");
    }

    logger.debug("userResponse: " + userCaptchaResponse);

    // Proceed with the remaining filters
    chain.doFilter(req, res);
}

public String getUserCaptchaResponse() {
    return userCaptchaResponse;
}

public void setUserCaptchaResponse(String userCaptchaResponse) {
    this.userCaptchaResponse = userCaptchaResponse;
}

public HttpServletRequest getRequest() {
    return request;
}

public void setRequest(HttpServletRequest request) {
    this.request = request;
}
}

CaptchaVerifierFilter.java

public class CaptchaVerifierFilter extends OncePerRequestFilter {

protected Logger logger = Logger.getLogger(CaptchaVerifierFilter.class);
private String failureUrl;
private CaptchaCaptureFilter captchaCaptureFilter;

// Inspired by log output: AbstractAuthenticationProcessingFilter.java:unsuccessfulAuthentication:320)
// Delegating to authentication failure handlerorg.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler@15d4273
private SimpleUrlAuthenticationFailureHandler failureHandler = new SimpleUrlAuthenticationFailureHandler();

@Override
public void doFilterInternal(HttpServletRequest req, HttpServletResponse res,
                             FilterChain chain) throws IOException, ServletException {

    logger.debug("Captcha verifier filter");
    logger.debug("userResponse: " + captchaCaptureFilter.getUserCaptchaResponse());

    // Assign values only when user has submitted a Captcha value
    if (captchaCaptureFilter.getUserCaptchaResponse() != null) {

        // Send HTTP request to validate user's Captcha
        boolean captchaPassed = SimpleImageCaptchaServlet.validateResponse(captchaCaptureFilter.getRequest(), captchaCaptureFilter.getUserCaptchaResponse());

        // Check if valid
        if (!captchaPassed) {
            logger.debug("Captcha is invalid!");

            // Redirect user to login page
            failureHandler.setDefaultFailureUrl(failureUrl);
            failureHandler.onAuthenticationFailure(req, res, new BadCredentialsException("Captcha invalid! " + captchaCaptureFilter.getRequest() + " " + captchaCaptureFilter.getUserCaptchaResponse()));

        } else {
            logger.debug("Captcha is valid!");
        }

        // Reset Captcha fields after processing
        // If this method is skipped, everytime we access a page
        // CaptchaVerifierFilter will infinitely send a request to the Google Captcha service!
        resetCaptchaFields();
    }

    // Proceed with the remaining filters
    chain.doFilter(req, res);
}

/**
 * Reset Captcha fields
 */
public void resetCaptchaFields() {
    captchaCaptureFilter.setUserCaptchaResponse(null);
}

public String getFailureUrl() {
    return failureUrl;
}

public void setFailureUrl(String failureUrl) {
    this.failureUrl = failureUrl;
}

public CaptchaCaptureFilter getCaptchaCaptureFilter() {
    return captchaCaptureFilter;
}

public void setCaptchaCaptureFilter(CaptchaCaptureFilter captchaCaptureFilter) {
    this.captchaCaptureFilter = captchaCaptureFilter;
}
}

最后但并非最不重要的，login.jsp

<%@ taglib prefix='c' uri='http://java.sun.com/jstl/core_rt' %>

<form id="login" name="f" action="<c:url value='/j_spring_security_check'/>" method="POST">
  <div class="container">

    <div class="content">
        <div class="row">
            <div class="login-form">
                <h3>Login</h3>
                <br />
                  <fieldset>
                       <div class="clearfix">
                            username: ecr
                            <input type="text" name='j_username' value='<c:if test="${not empty param.login_error}"><c:out value="${SPRING_SECURITY_LAST_USERNAME}"/></c:if>' placeholder="username@artajasa.co.id">
                       </div>
                       <div class="clearfix">
                           password: ecr123
                           <input type="password" name='j_password' placeholder="password">
                       </div>
                       <div class="clearfix">
                           <img src="../../jcaptcha.jpg" />
                           <br />
                           <input type="text" name="jcaptcha" placeholder="masukkan captcha" />
                       </div>
                       <br />
                       <button class="btn btn-primary" type="submit"><i class="icon-lock"></i> Sign in</button>
                   </fieldset>
            </div>
        </div>
    </div>
     <br />
     <c:if test="${not empty error}">
            <div class="alert alert-error">
            <button type="button" class="close" data-dismiss="alert"><i class="icon-remove"></i></button>
            Login Failed, try again.<br />
            <c:out value="${sessionScope['SPRING_SECURITY_LAST_EXCEPTION'].message}"/>
            </div>
          </c:if>
  </div>

​

Answer 1

问题解决了！我找到了答案。所以我们毕竟不需要CaptchaVerifierFilter。我在AuthenticationProvider中验证了captcha。

以下是更改的清单：

在Springsecurity.xml中，这个

<!--JCaptcha Filtering-->
<custom-filter ref="captchaCaptureFilter" before="FORM_LOGIN_FILTER"/>
<custom-filter ref="captchaVerifierFilter" after="FORM_LOGIN_FILTER"/>

变成这个

<!--JCaptcha Filtering-->
<custom-filter ref="captchaCaptureFilter" before="FORM_LOGIN_FILTER"/>

删除

<!-- For verifying CAPTCHA fields -->
<!-- Private key is assigned by the JCaptcha service -->
<beans:bean id="captchaVerifierFilter" class="com.util.CaptchaVerifierFilter"
  p:failureUrl="/session/loginfailed/"
  p:captchaCaptureFilter-ref="captchaCaptureFilter"/>

并在这里验证captcha

<beans:bean id="customAuthenticationProvider" class="com.pusilkom.artajasa.ecr.backend.util.MyAuthenticationProvider"
            p:captchaCaptureFilter-ref="captchaCaptureFilter"/>

Answer 2

我不知道这是不是正确的做法，但它对我来说是完美的。我创建了与您的类相同的类，过滤器类代码中的更改很少，security-context.xml.中的更改也很小。

1. 我在CaptchaCaptureFilter中验证了captcha，并将验证结果存储在变量iscaptchaPassed中，这是CaptchaCaptureFilter中的一个属性。除了iscaptchaPassed之外，我还将响应存储为captchaResponse，以检查以后在CaptchaVerifierFilter中是否为null。

公共类CaptchaCaptureFilter扩展OncePerRequestFilter {

private String captchaResponse;

private boolean iscaptchaPassed;

//setters和getter

@Override
public void doFilterInternal(HttpServletRequest req, HttpServletResponse res,FilterChain chain) throws IOException, ServletException {

    logger.info("Captcha capture filter");

    String captcha_Response=req.getParameter("jcaptcha");
    logger.info("response captcha captured : " +captcha_Response);

    if(captcha_Response!=null)
    {
        iscaptchaPassed = SimpleImageCaptchaServlet.validateResponse(req, req.getParameter("jcaptcha"));
        captchaResponse=captcha_Response;
        logger.info("isCaptchaPassed value is "+iscaptchaPassed);
    }

    // Proceed with the remaining filters
    chain.doFilter(req, res);
}

1. 按以下方式读取注入到captchaCaptureFilter中的CaptchaVerifyFilter的值和句柄。

公共类CaptchaVerifierFilter扩展OncePerRequestFilter {

protected Logger logger = LoggerFactory.getLogger(Filter.class);

private CaptchaCaptureFilter captchaCaptureFilter;

private String failureUrl;

//getters and setters**strong text**

private SimpleUrlAuthenticationFailureHandler failureHandler = new SimpleUrlAuthenticationFailureHandler();

@Override
public void doFilterInternal(HttpServletRequest req, HttpServletResponse res,FilterChain chain) throws IOException, ServletException {

    //logger.info("Captcha verifier filter");
    boolean captchaPassed=captchaCaptureFilter.getIscaptchaPassed();
    String captchaResponse=captchaCaptureFilter.getCaptchaResponse();
    //logger.info("captcha captured :"+captchaResponse+" validation result of captcha : " +captchaPassed);

    if(captchaResponse!=null)
    {
        if(captchaPassed)
        {
            logger.info("Captcha is valid!");
        }
        else
        {
            logger.info("Captcha is invalid!");
            failureHandler.setDefaultFailureUrl(failureUrl);
            failureHandler.onAuthenticationFailure(req, res, new BadCredentialsException("Captcha invalid!"));
        }
        resetCaptchaFields();   
    }

    chain.doFilter(req, res);           
}

/** 
 * Reset Captcha fields
 */
public void resetCaptchaFields() {
    captchaCaptureFilter.setCaptchaResponse(null);
    captchaCaptureFilter.setIscaptchaPassed(false);;
}

1. 在Securitycontext.xml中更改以下内容。

安全性:自定义筛选器ref="captchaCaptureFilter“before=优先

安全性:自定义过滤器ref="captchaVerifierFilter“after="FORM_LOGIN_FILTER”

我在验证captcha的所有过滤器之前添加captchaCaptureFilter。验证结果在FORM_LOGIN_FILTER. UserNameAndPasswordAuthFilter之后使用。

Answer 3

我又尝试了一种验证JCaptcha的方法，即在Security身份验证之前。首先，JCaptcha将得到验证，如果正确，控制将转到。我也没有在Securitycontext.xml中添加CaptchaCaptureFilter。

下面是我试过的。它正常工作了。

public String login() {
    this.captchaPassed = false;

    // Check if captcha entered is correct. If yes then only proceed with
    // Spring Security Authentication
    this.captchaPassed = checkLoginCaptcha();

    if (captchaPassed) {
        boolean success = authenticationService.login(userName, password);

        if (success) {
            StringBuilder userNameBuilder = new StringBuilder();
            userNameBuilder.append(userName);
            FacesContext.getCurrentInstance().getExternalContext()
                    .getSessionMap()
                    .put("USER_NAME_PARAM", userNameBuilder.toString());
            return ApplicationConstants.HOME_PAGE;
        } else {
            this.message = "Wrong Username or Password Entered. Please LOGIN again.";
            this.userName = null;
            this.password = null;
            this.captchaString = null;

            return ApplicationConstants.LOGIN_PAGE;
        }
    } else {
        this.message = "Invalid captcha entered. Please LOGIN again.";
        return ApplicationConstants.LOGIN_PAGE;
    }
}

public boolean checkLoginCaptcha() {

    HttpServletRequest req = (HttpServletRequest) FacesContext
            .getCurrentInstance().getExternalContext().getRequest();
    String str = null;
    boolean flag = false;

    try {
        str = req.getParameter("loginForm:jcaptchaString");

        if (str != null) {
            flag = SimpleImageCaptchaServlet.validateResponse(req, str);
        }
    } catch (Exception e) {
        e.printStackTrace();
        flag = false;
    }

    return flag;
}