Question

我正在尝试使用LDAP访问我的项目。它成功提示输入用户名和密码，但在其中输入正确的凭据会导致再次弹出提示（似乎凭据错误，但它们不是）。

这是我的security-context.xml：

<?xml version="1.0" encoding="utf-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
             xmlns:beans="http://www.springframework.org/schema/beans"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.springframework.org/schema/beans
                                 http://www.springframework.org/schema/beans/spring-beans.xsd
                                 http://www.springframework.org/schema/security
                                 http://www.springframework.org/schema/security/spring-security.xsd">

  <ldap-server url="ldap://${ldap.host}:${ldap.port}/${ldap.root}" manager-dn="${ldap.manager.dn}" manager-password="${ldap.manager.password}" />

  <authentication-manager>
    <ldap-authentication-provider group-search-base="${ldap.group.search.base}" user-search-filter="(uid={0})" user-search-base="${ldap.user.search.base}" />
  </authentication-manager>

  <http use-expressions="true">
    <intercept-url pattern="/**" />
    <http-basic />
  </http>

</beans:beans>

密码存储为{MD5}哈希... 我正在使用jsr 250 api。

编辑： @TobyHobson这导致org.xml.sax.SAXParseException; lineNumber: 14; columnNumber: 38; cvc-complex-type.2.4.a: Invalid content was found starting with element 'password-encoder'. One of '{"http://www.springframework.org/schema/security":password-compare}' is expected.

EDIT2： @TobyHobson将password-compare放在password-encoder附近似乎在编译，但它仍然拒绝我的正确凭据。

EDIT3：这是必要的日志：

DEBUG: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'sessionFactory'
DEBUG: org.springframework.security.web.FilterChainProxy - /licenses/index.html at position 1 of 8 in additional filter chain; firing Filter: 'SecurityContextPersistenceFilter'
DEBUG: org.springframework.security.web.context.HttpSessionSecurityContextRepository - HttpSession returned null object for SPRING_SECURITY_CONTEXT
DEBUG: org.springframework.security.web.context.HttpSessionSecurityContextRepository - No SecurityContext was available from the HttpSession: org.apache.catalina.session.StandardSessionFacade@397af435. A new one will be created.
DEBUG: org.springframework.security.web.FilterChainProxy - /licenses/index.html at position 2 of 8 in additional filter chain; firing Filter: 'BasicAuthenticationFilter'
DEBUG: org.springframework.security.web.authentication.www.BasicAuthenticationFilter - Basic Authentication Authorization header found for user 'demo_admin'
DEBUG: org.springframework.security.authentication.ProviderManager - Authentication attempt using org.springframework.security.ldap.authentication.LdapAuthenticationProvider
DEBUG: org.springframework.security.ldap.authentication.LdapAuthenticationProvider - Processing authentication request for user: demo_admin
DEBUG: org.springframework.security.ldap.search.FilterBasedLdapUserSearch - Searching for user 'demo_admin', with user search [ searchFilter: '(uid={0})', searchBase: 'ou=people', scope: subtree, searchTimeLimit: 0, derefLinkFlag: false ]
DEBUG: org.springframework.security.ldap.SpringSecurityLdapTemplate - Searching for entry under DN 'dc=ubuntu,dc=local', base = 'ou=people', filter = '(uid={0})'
DEBUG: org.springframework.security.ldap.SpringSecurityLdapTemplate - Found DN: uid=demo_admin,ou=people
DEBUG: org.springframework.security.ldap.authentication.PasswordComparisonAuthenticator - Performing LDAP compare of password attribute 'userPassword' for user 'uid=demo_admin,ou=people'
DEBUG: org.springframework.security.web.authentication.www.BasicAuthenticationFilter - Authentication request for failed: org.springframework.security.authentication.BadCredentialsException: Bad credentials
DEBUG: org.springframework.security.web.context.HttpSessionSecurityContextRepository - SecurityContext is empty or contents are anonymous - context will not be stored in HttpSession.
DEBUG: org.springframework.security.web.context.SecurityContextPersistenceFilter - SecurityContextHolder now cleared, as request processing completed

EDIT4：我想这与jsr 250 api和群组/角色有关。这是我的ldif：

dn: ou=people,dc=ubuntu,dc=local
objectClass: organizationalUnit
ou: people

dn: uid=demo_admin,ou=people,dc=ubuntu,dc=local
userPassword: {MD5}fe01ce2a7fbac8fafaed7c982a04e229
objectClass: posixAccount
objectClass: account
homeDirectory: null
uid: demo_admin
uidNumber: 1001
gidNumber: 1000
cn: Demo Admin

dn: uid=demo_manager,ou=people,dc=ubuntu,dc=local
userPassword: {MD5}fe01ce2a7fbac8fafaed7c982a04e229
objectClass: posixAccount
objectClass: account
homeDirectory: null
uid: demo_manager
uidNumber: 2001
gidNumber: 2000
cn: Demo Manager

dn: uid=demo_viewer,ou=people,dc=ubuntu,dc=local
userPassword: {MD5}fe01ce2a7fbac8fafaed7c982a04e229
objectClass: posixAccount
objectClass: account
homeDirectory: null
uid: demo_viewer
uidNumber: 3001
gidNumber: 3000
cn: Demo Viewer

dn: ou=groups,dc=ubuntu,dc=local
objectClass: organizationalUnit
ou: groups

dn: cn=Admins,ou=groups,dc=ubuntu,dc=local
objectClass: posixGroup
cn: Admins
gidNumber: 1000

dn: cn=Managers,ou=groups,dc=ubuntu,dc=local
objectClass: posixGroup
cn: Managers
gidNumber: 2000

dn: cn=Viewers,ou=groups,dc=ubuntu,dc=local
objectClass: posixGroup
cn: Viewers
gidNumber: 3000

我在我的控制器中使用@RolesAllowed({ Role.ROLE_ADMIN, Role.ROLE_MANAGER, Role.ROLE_VIEWER })，这是我的absract角色类：

public abstract class Role
{
  public static final String ROLE_ADMIN = "Admins";
  public static final String ROLE_MANAGER = "Managers";
  public static final String ROLE_VIEWER = "Viewers";
}

Answer 1

您需要向身份验证提供程序添加password encoder，以告知Spring在绑定LDAP之前散列密码。 e.g。

<authentication-manager>
  <ldap-authentication-provider group-search-base="${ldap.group.search.base}" user-search-filter="(uid={0})" user-search-base="${ldap.user.search.base}">
    <password-encoder hash="md5"/>
  </ldap-authentication-provider>
</authentication-manager>

如果你使用盐，你还需要包括它。例如

<password-encoder hash="md5">
  <salt-source user-property="username"/>
</password-encoder>

Answer 2

不需要在spring安全配置文件中定义散列，散列技术将由ldap本身处理。您要做的唯一一件事就是将MD5密码存储在像这样的ldap ....

              Attributes attrs = new BasicAttributes();
      BasicAttribute ocattr = new BasicAttribute("objectclass");
      ocattr.add("top");
      ocattr.add("person");
      ocattr.add("inetorgperson");
      ocattr.add("organizationalperson");
      attrs.put(ocattr);
      attrs.put("sn",user.getName());
      attrs.put("userPassword","{MD5}"+user.getPassword());

Answer 3

密码编码方案在使用绑定身份验证时并不重要，因为密码检查是在目录中执行的，而不是在Spring Security代码中执行，因此Spring Security无需散列密码或了解密码的存储方式。它将作为纯文本发送到目录，因此如果您担心这一点，您应该使用ldaps连接。

如果使用LDAP“比较”操作进行身份验证，则必须将相同的密码字段副本发送到目录。这很容易出错，因为它取决于案例是否正确等等。虽然有LdapShaPasswordEncoder来处理{SHA}和{SSHA}，但目前还没有为{MD5}哈希提供支持。

很可能由于某些其他原因导致您的设置失败，这可以通过更仔细地检查调试日志和LDAP服务器日志来清楚。

Spring Security LDAP和MD5哈希密码

3 个答案: