如何编写LDAP查询以测试用户是否为组成员? [英] How to write LDAP query to test if user is member of a group?

问题描述

我想编写一个LDAP查询，以测试用户(sAMAccountName)是否是特定组的成员.是否可以这样做，以便我得到0或1个结果记录?

我想我可以为用户获取所有组并测试每个组是否匹配，但是我想知道是否可以将其打包到一个LDAP表达式中.

有什么想法吗?

谢谢

解决方案

您应该可以在此处使用以下过滤器创建查询:

(&(objectClass=user)(sAMAccountName=yourUserName)
  (memberof=CN=YourGroup,OU=Users,DC=YourDomain,DC=com))

，当您在LDAP服务器上运行该命令时，如果得到结果，则您的用户"yourUserName"确实是"CN = YourGroup，OU = Users，DC = YourDomain，DC = com

尝试看看是否可行！

如果您使用C#/VB.Net和System.DirectoryServices，则此代码段将达到目的:

 DirectoryEntry rootEntry = new DirectoryEntry("LDAP://dc=yourcompany,dc=com");

DirectorySearcher srch = new DirectorySearcher(rootEntry);
srch.SearchScope = SearchScope.Subtree;

srch.Filter = "(&(objectClass=user)(sAMAccountName=yourusername)(memberOf=CN=yourgroup,OU=yourOU,DC=yourcompany,DC=com))";

SearchResultCollection res = srch.FindAll();

if(res == null || res.Count <= 0) {
    Console.WriteLine("This user is *NOT* member of that group");
} else {
    Console.WriteLine("This user is INDEED a member of that group");
}
 

警告:仅测试直接的组成员身份，而不会测试您域中所谓的主要组"(通常为"cn = Users")的成员身份.它不处理嵌套成员资格，例如用户A是组A的成员，而组A也是组B的成员-用户A确实也是组B的成员这一事实在这里没有得到体现.

马克

I want to write an LDAP query which tests whether a user (sAMAccountName) is a member of a particular group. Is it possible to do that so that I get either 0 or 1 result records?

I guess I can get all groups for the user and test each one for a match but I was wondering if I could pack it into one LDAP expression.

Any ideas?

Thanks

解决方案

You should be able to create a query with this filter here:

(&(objectClass=user)(sAMAccountName=yourUserName)
  (memberof=CN=YourGroup,OU=Users,DC=YourDomain,DC=com))

and when you run that against your LDAP server, if you get a result, your user "yourUserName" is indeed a member of the group "CN=YourGroup,OU=Users,DC=YourDomain,DC=com

Try and see if this works!

If you use C# / VB.Net and System.DirectoryServices, this snippet should do the trick:

DirectoryEntry rootEntry = new DirectoryEntry("LDAP://dc=yourcompany,dc=com");

DirectorySearcher srch = new DirectorySearcher(rootEntry);
srch.SearchScope = SearchScope.Subtree;

srch.Filter = "(&(objectClass=user)(sAMAccountName=yourusername)(memberOf=CN=yourgroup,OU=yourOU,DC=yourcompany,DC=com))";

SearchResultCollection res = srch.FindAll();

if(res == null || res.Count <= 0) {
    Console.WriteLine("This user is *NOT* member of that group");
} else {
    Console.WriteLine("This user is INDEED a member of that group");
}

Word of caution: this will only test for immediate group memberships, and it will not test for membership in what is called the "primary group" (usually "cn=Users") in your domain. It does not handle nested memberships, e.g. User A is member of Group A which is member of Group B - that fact that User A is really a member of Group B as well doesn't get reflected here.

Marc

这篇关于如何编写LDAP查询以测试用户是否为组成员?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！