如何以编程方式从 SQL 更新和删除 LDAP 用户？

Question

所以我希望获取一些 ldap 值，并将它们插入加密的数据库中。我已经使插入工作正常，但我需要检查用户是否仍然是该组的一部分，如果不是，则将其从数据库中删除，如果添加了新用户，则插入它们而不是插入现有用户。您能给我一些有关最佳实践的指导吗？我不想截断表并重新插入所有内容。

        try
        {
            /* Connection to Active Directory */
            DirectoryEntry deBase = new DirectoryEntry("LDAP://" + txtLDAP.Text + ":" + txtLDapPort.Text + "/" + txtBadeDN.Text, txtUsername.Text, txtPassword.Text, AuthenticationTypes.Secure);

            /* Directory Search*/
            DirectorySearcher dsLookForGrp = new DirectorySearcher(deBase);
            dsLookForGrp.Filter = String.Format("(cn={0})", txtGroup.Text);
            dsLookForGrp.SearchScope = SearchScope.Subtree;
            dsLookForGrp.PropertiesToLoad.Add("distinguishedName");
            SearchResult srcGrp = dsLookForGrp.FindOne();

            /* Directory Search
             */
            DirectorySearcher dsLookForUsers = new DirectorySearcher(deBase);
            dsLookForUsers.Filter = String.Format("(&(objectCategory=person)(memberOf={0}))", srcGrp.Properties["distinguishedName"][0]);
            dsLookForUsers.SearchScope = SearchScope.Subtree;
            dsLookForUsers.PropertiesToLoad.Add("objectSid");
            dsLookForUsers.PropertiesToLoad.Add("sAMAccountName");
            SearchResultCollection srcLstUsers = dsLookForUsers.FindAll();

            StringBuilder sbUsers = new StringBuilder();

            foreach (SearchResult sruser in srcLstUsers)
            {
                SecurityIdentifier sid = new SecurityIdentifier((byte[])sruser.Properties["objectSid"][0], 0);
                string ConnString = "ConnectionString Removed";
                string SqlString = "spInsertADAuthorization";
                using (OleDbConnection conn = new OleDbConnection(ConnString))
                {
                    using (OleDbCommand cmd = new OleDbCommand(SqlString, conn))
                    {
                        cmd.CommandType = CommandType.StoredProcedure;
                        cmd.Parameters.AddWithValue("AD_Account", SpartaCrypto.SpartaEncryptAES(sruser.Properties["sAMAccountName"][0].ToString(), "thisisasharedsecret"));
                        cmd.Parameters.AddWithValue("AD_SID", SpartaCrypto.SpartaEncryptAES(sid.ToString(), "thisisasharedsecret"));
                        cmd.Parameters.AddWithValue("AD_EmailAddress", "[email protected]");
                        cmd.Parameters.AddWithValue("DateImported", DateTime.Now.ToString());
                        cmd.Parameters.AddWithValue("Active", 1);
                        conn.Open();
                        cmd.ExecuteNonQuery();
                        conn.Close();
                    }
                }
                lblResults.Text = srcLstUsers.Count + " Users granted access.";
            }
        }

        catch (Exception ex)
        {
            if (ex.Message.Contains("Logon failure"))
            {
                lblResults.Text = "Logon Failure.  Check your username or password.";
            }

            if (ex.Message.Contains("The server is not operational"))
            {
                lblResults.Text = "LDAP Error.  Check your hostname or port.";
            }
            if (ex.Message.Contains("Object reference not set to an instance of an object"))
            {
                lblResults.Text = "LDAP Error.  Check your hostname, port, or group name and try again.";
            }


        }

Answer 1

由于您使用的是 .NET 3.5 及更高版本，因此您应该检查 System.DirectoryServices.AccountManagement (S.DS.AM) 命名空间。在这里阅读所有相关内容：

• 管理 .NET Framework 3.5 中的目录安全主体
• MSDN 文档System.DirectoryServices.AccountManagement

您可以使用 PrincipalSearcher 和“按示例查询”主体进行搜索：

// create your domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain);

// define a "query-by-example" principal - here, we search for a UserPrincipal 
// and with the first name (GivenName) of "Bruce"
UserPrincipal qbeUser = new UserPrincipal(ctx);
qbeUser.GivenName = "Bruce";

// create your principal searcher passing in the QBE principal    
PrincipalSearcher srch = new PrincipalSearcher(qbeUser);

// find all matches
foreach(var found in srch.FindAll())
{
    // do whatever here - "found" is of type "Principal" - it could be user, group, computer.....          
}

对于使用单个主体，编程界面也更好：

// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(ctx, "SomeUserName");

if(user != null)
{
   // do something here... you can access most of the commonly used properties easily
   user.GivenName = "....";
   user.Surname = "......";
   user.SamAccountName = ".....";
}

// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "YourGroupNameHere");

// if found....
if (group != null)
{
   // iterate over members
   foreach (Principal p in group.GetMembers())
   {
      Console.WriteLine("{0}: {1}", p.StructuralObjectClass, p.DisplayName);
      // do whatever you need to do to those members
   }
}

新的 S.DS.AM 使在 AD 中与用户和组进行交互变得更加容易！