公认的答案是绝对正确的。默认情况下,每个(用户)对象都513
在属性primarygroupid中设置,这是域用户 sid的固定“尾部” 。但是:这可以更改,并且可以在那里配置所有其他组,所以我们不能依赖它。
这是一个如何获取group members
无论如何的示例方法(不管默认值是保留还是更改)。在对活动目录组的成员进行任何查询后,我都会调用这样的方法。在此示例中,我得到了一个可分辨名称数组作为结果。但是所有其他属性都是可能的,只需将它们添加到dSearcher.PropertiesToLoad.Add(...)
并修改结果即可。
我知道,这是一个关于 VB 的问题,我希望它易于移植。
using System.DirectoryServices;
using System.Security.Principal;
public static string[] GetMembersDnByPrimaryGroupId(string domainName, SecurityIdentifier sidOfGroupToGetMembersByPrimaryGroupId)
{
// In a single domain environement the domain name is probably not needed, but
// we expect a multy domain environement
if (string.IsNullOrWhiteSpace(domainName) || sidOfGroupToGetMembersByPrimaryGroupId == null)
{
throw new ArgumentNullException($"Neither domainName nor sid may be null / blank: DomainName: { domainName }; sid: { sidOfGroupToGetMembersByPrimaryGroupId }");
//<----------
}
List<string> membersDnResult = new List<string>();
// Get the last segment of the group sid, this is what is stored in the "primaryGroupId"
string groupSidTail = sidOfGroupToGetMembersByPrimaryGroupId.Value.Split('-').Last();
string path = $"LDAP://{ domainName }";
DirectoryEntry dEntry = new DirectoryEntry(path);
SearchResultCollection adSearchResult = null;
DirectorySearcher dSearcher = new DirectorySearcher(dEntry);
// For this example we need just the distinguished name but you can add
// here the property / properties you want
dSearcher.PropertiesToLoad.Add("distinguishedName");
// set the filter to primarygroupid
dSearcher.Filter = $"(&(primarygroupid={ groupSidTail }))";
// May die thousand deaths, therefore exception handling is needed.
// My exception handling is outside of this method, you may want
// to add it here
adSearchResult = dSearcher.FindAll();
// Get the domains sid and check if the domain part of the wanted sid
// fits the domain sid (necesarry in multy domain environments)
byte[] domainSidBytes = (byte[])dEntry.Properties["objectSid"].Value;
SecurityIdentifier domainSid = new SecurityIdentifier(domainSidBytes, 0);
if (sidOfGroupToGetMembersByPrimaryGroupId.AccountDomainSid != domainSid)
{
throw new ArgumentException($"Domain sid of the wanted group { sidOfGroupToGetMembersByPrimaryGroupId.AccountDomainSid } does not fit the sid { domainSid } of the searched through domain \"{ domainName }\"");
//<----------
}
// We found entries by the primarygroupid
if (adSearchResult.Count > 0)
{
foreach (SearchResult forMemberByPrimaryGroupId in adSearchResult)
{
// Every AD object has a distinguishedName, therefore we acess "[0]"
// wihtout any further checking
string dn = forMemberByPrimaryGroupId.Properties["distinguishedName"][0].ToString();
membersDnResult.Add(dn);
}
}
return membersDnResult.ToArray();
}