REST安全实践4.JAASRealm+FORM认证

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4. JAASRealm + FORM认证

Accesses authentication information through the Java Authentication & Authorization Service (JAAS) framework.通过实现JAAS(JSR196标准)的服务，获取认证信息

4.1 创建Realm所需的数据表

mysql -uroot -p < security.sql

4.2 配置JAASRealm

$CATALINA_BASE/conf/server.xml

<Context docBase="security-rest" ……>    <Realm className="org.apache.catalina.realm.JAASRealm"    appName="RestJaasRealm"              roleClassNames="com.example.jaas.RestRolePrincipal"     userClassNames="com.example.jaas.RestUserPrincipal"/></Context>

Realm定义在context中，否则会导致roleClassNames和userClassNames中定义的类找不到。appName定义的名字和restJaas.conf中定义的须一致。

Eclipse内置Tomcat配置?

4.3 JAAS配置文件

/security-rest/src/main/resources/restJaas.conf

RestJaasRealm{    com.example.jaas.RestLoginModule required;};

第二参数取值和含义

Required 该模块必须认证用户，如果认证失败，使用其它登录模块认证Requisite 如果认证失败，将终止认证Sufficient 如果认证成功，即获得登录认证；如果认证失败，使用其它登录模块认证Optional 认证将继续下去，即使该模块认证成功

4.4 JAAS实现类

jax-rs2-guide\sample\6\security-rest\src\main\java\com\example\jaas>ls -l

LoginModule实现类：RestLoginModule.javaLoginModule实现类的数据库操作类：RestLoginDao.javaRole接口POJO类：RestRolePrincipal.javaUser接口POJO类：RestUserPrincipal.java

4.5 配置JVM启动参数

-Djava.security.auth.login.config="D:\+aries\github\jax-rs2-guide\sample\6\security-rest\src\main\resources\restJaas.conf"

Eclipse内置Tomcat 虚拟机参数设置?

4.6 数据库驱动

$CATALINA_HOME/lib

M2_REPO/mysql/mysql-connector-java/5.1.25/mysql-connector-java-5.1.25.jar

4.7 配置应用的web.xml

/security-rest/src/main/webapp/WEB-INF/web.xml

<security-constraint>    <web-resource-collection>        <url-pattern>/*</url-pattern>        <http-method>GET</http-method>        <http-method>POST</http-method>        <http-method>UPDATE</http-method>        <http-method>DELETE</http-method>    </web-resource-collection>    <web-resource-collection>        <url-pattern>/webapi/*</url-pattern>        <http-method>GET</http-method>        <http-method>POST</http-method>        <http-method>UPDATE</http-method>        <http-method>DELETE</http-method>    </web-resource-collection>    <auth-constraint>        <role-name>admin</role-name>    </auth-constraint></security-constraint><security-constraint>    <web-resource-collection>        <url-pattern>/*</url-pattern>        <http-method>GET</http-method>    </web-resource-collection>    <web-resource-collection>        <url-pattern>/webapi/*</url-pattern>        <http-method>GET</http-method>    </web-resource-collection>    <auth-constraint>        <role-name>user</role-name>    </auth-constraint></security-constraint><login-config>    <auth-method>FORM</auth-method>    <form-login-config>        <form-login-page>/login.html</form-login-page>    </form-login-config></login-config><welcome-file-list>    <welcome-file>/index.html</welcome-file></welcome-file-list>

4.8 登录页面

<form action="j_security_check">    <div>        <span>User Name</span>        <input id="j_username" name="j_username" type="text" />    </div>    <div style="margin-top:10px;margin-bottom:10px;">        <span>Pass Word</span>        <input id="j_password" name="j_password" type="password" />    </div>    <input type="submit" value="Sign In" /></form>

4.9 JAAS流程

在JAASRealm.authenticate认证方法中，有两个主要对象：

CallbackHandler 持有登录信息的回调LoginContext 通过配置文件感知LoginModule实现类的上下文

认证分为两个步骤：

验证登录信息合法性 对应login方法?

获取登录身份信息 对应commit方法?