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josso

巫经义
2023-12-01
转载:http://www.jeedao.net/posts/list/0/44.page

  本文以JForum v2.1.7和JOSSO v1.5为例说明,JForum论坛单点登录的集成。
  JForum在设计之初就考虑了与其它系统进行SSO单点登录集成的接口,你需要做的是:
# 编写一个对接口net.jforum.sso.SSO.java的实现类。
# 修改配置文件“SystemGlobals.properties”,更改JForum的认证模式。
# 对JOSSO和jforum的相关配置文件进行设置。
  要与JOSSO集成,当然是先到http://www.josso.org/去下载一个JOSSO啦,呵呵。我下载的是“apache-tomcat-5.5.20_josso-1.5.zip”,这个包已经把大部分的配置设置好了,你不需要进行太多的设置工作。
  下面我们来看看整个配置过程吧:
  解开“apache-tomcat-5.5.20_josso-1.5.zip”得到目录“apache-tomcat-5.5.20_josso-1.5”,我们把jforum论坛拷贝到“\apache-tomcat-5.5.20_josso-1.5\webapps”目录下。
  出于实验目的我们需要先在jforum论坛中注册一个用户“user1”,所以我们先启动tomcat,注册一个用户名为“user1”的论坛用户。
  打开“\apache-tomcat-5.5.20_josso-1.5\bin”目录下的“josso-agent-config.xml”配置文件,参照原来的配置增加以下配置描述:
Code:

[quote]<partner-app>
<context>/jforum</context>
</partner-app>[/quote]


为JForum论坛编写单点登录实现类,代码如下:
Code:

package net.jforum.sso;

import net.jforum.context.RequestContext;
import net.jforum.JForumExecutionContext;
import net.jforum.entities.UserSession;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import org.apache.log4j.Logger;

public class Josso implements SSO {

static final Logger logger = Logger.getLogger(Josso.class.getName());

public String authenticateUser(RequestContext request) {
String remoteUser = null;

remoteUser = request.getRemoteUser();
logger.info("remoteUser:" + remoteUser);

if(remoteUser == null) {
JForumExecutionContext.setRedirect(SystemGlobals.getValue(ConfigKeys.SSO_REDIRECT));
return null;
}

if (remoteUser == null || remoteUser.trim().equals("")) {
JForumExecutionContext.setRedirect(SystemGlobals.getValue(ConfigKeys.SSO_REDIRECT));
return null; // no user found
}

return remoteUser; // jforum username
}

public boolean isSessionValid(UserSession userSession, RequestContext request) {

String remoteUser = null;

remoteUser = request.getRemoteUser(); // jforum username
logger.info("remoteUser:" + remoteUser);

// user has since logged out
if(remoteUser == null &&
userSession.getUserId() != SystemGlobals.getIntValue(ConfigKeys.ANONYMOUS_USER_ID)) {
return false;
// user has since logged in
} else if(remoteUser != null &&
userSession.getUserId() == SystemGlobals.getIntValue(ConfigKeys.ANONYMOUS_USER_ID)) {
return false;
// user has changed user
} else if(remoteUser != null && !remoteUser.equals(userSession.getUsername())) {
return false;
}
return true; // myapp user and forum user the same
}
}



  [quote]更改JForum的配置文件“SystemGlobals.properties”:

authentication.type = sso
sso.implementation = net.jforum.sso.Josso[/quote]


  更改JForum论坛的web.xml文件,在web.xml文件增加以下配置:
Code:

<security-constraint>
<!-- Sample Security Constraint -->
<web-resource-collection>

<!-- We're going to protect this resource and make it available only to users in "role1". -->
<web-resource-name>public-resources</web-resource-name>

<url-pattern>/resources/*</url-pattern>

<http-method>HEAD</http-method>
<http-method>GET</http-method>
<http-method>POST</http-method>
<http-method>PUT</http-method>
<http-method>DELETE</http-method>

</web-resource-collection>

<!--
No roles required, it means that this are public resources !
Usefull to tell JOSSO that resources matching this security constraint
should not be subject to SSO protection.
-->

</security-constraint>

<security-constraint>
<!-- Sample Security Constraint -->
<web-resource-collection>

<!-- We're going to protect this resource and make it available only to users in "role1". -->
<web-resource-name>protected-resources</web-resource-name>

<url-pattern>/josso/*</url-pattern>
<url-pattern>/protected/*</url-pattern>
<url-pattern>/forums/*</url-pattern>

<http-method>HEAD</http-method>
<http-method>GET</http-method>
<http-method>POST</http-method>
<http-method>PUT</http-method>
<http-method>DELETE</http-method>

</web-resource-collection>

<!-- NOTE: This role names will be retrieved by Josso using the propper identity store. -->
<auth-constraint>
<role-name>role1</role-name>
</auth-constraint>

<user-data-constraint>
<transport-guarantee>NONE</transport-guarantee>
</user-data-constraint>

</security-constraint>

<!-- We only need tomcat to redirect the user -->
<login-config>

<auth-method>FORM</auth-method>

<form-login-config>
<!--
NOTE: This will redirect the user to the propper login page provided by JOSSO.
-->
<form-login-page>/login-redirect.jsp</form-login-page>
<form-error-page>/login-redirect.jsp</form-error-page>

</form-login-config>

</login-config>

<security-role >
<description>Role 1</description>
<role-name>role1</role-name>
</security-role>



  好了,现在你重新启动tomcat,并访问论坛:http://localhost:8080/jforum/forums/list.page
  呵呵,页面被重定向到JOSSO的用户登录页面去了。请在登录页面输入用户名:user1,密码:user1pwd,成功登录后页面会自动重定向到 http://localhost:8080/jforum/forums/list.page,并且jforum论坛显示用户:user1已经处于在线登录状态了。
  细心查看JForum论坛的页面你会发现,论坛中的退出按钮已经不见了,这是因为退出功能应该由你的JOSSO来实现的原因。还有就是那个JForum原来的那个登录输入框也没有了。
  呵呵,别以为你已经完成单点登录的整合了哦,还有很多工作要做呢。例如,用户注册的时候你必须同时把jforum论坛必须的信息也保存到jforum论坛的相关库表中;你需要为论坛安置一个正确的退出按钮连接;你需要美好JOSSO的登录界面等。

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