Adding & removing users from an NT server with VB5

Adding & removing users from an NT server with VB5

How do I add and remove users from an NT server through VB? I have Web customers who are added and removed frequently from our Web site, where they require an ftp directory. When we get a new rep, I manually create a new ftp directory, create a new user, and assign permissions to a new ftp directory.

The following code (paste into a form with 1 command button, Command1) will allow you to add a new user to NT:

Option Explicit' ---------------------------------------------' API calls' ---------------------------------------------Private Declare Function NetUserAdd _   Lib "netapi32.dll" _   (ServerName As Byte, _    ByVal Level As Long, _    Buffer As USER_INFO_3, _    parm_err As Long) As LongPrivate Declare Function NetApiBufferAllocate _   Lib "netapi32.dll" _   (ByVal ByteCount As Long, _    Ptr As Long) As LongPrivate Declare Function NetApiBufferFree _   Lib "netapi32" _   (ByVal pBuffer As Long) As Long' ---------------------------------------------' Possible errors with API call' ---------------------------------------------Private Const ERROR_ACCESS_DENIED      As Long = 5Private Const NERR_BASE                As Long = 2100Private Const NERR_GroupExists         As Long = NERR_BASE + 123Private Const NERR_NotPrimary          As Long = NERR_BASE + 126Private Const NERR_UserExists          As Long = NERR_BASE + 124Private Const NERR_PasswordTooShort    As Long = NERR_BASE + 145Private Const NERR_InvalidComputer     As Long = NERR_BASE + 251' ---------------------------------------------' General constants used' ---------------------------------------------Private Const constUserInfoLevel3      As Long = 3Private Const TIMEQ_FOREVER            As Long = -1&Private Const MAX_PATH                 As Long = 260&Private Const DOMAIN_GROUP_RID_USERS   As Long = &H201&Private Const USER_MAXSTORAGE_UNLIMITED   As Long = -1&' ---------------------------------------------' Used by usri3_flags element of data structure' ---------------------------------------------Private Const UF_SCRIPT                As Long = &H1&Private Const UF_ACCOUNTDISABLE        As Long = &H2&Private Const UF_HOMEDIR_REQUIRED      As Long = &H8&Private Const UF_LOCKOUT               As Long = &H10&Private Const UF_PASSWD_NOTREQD        As Long = &H20&Private Const UF_PASSWD_CANT_CHANGE    As Long = &H40&Private Const UF_DONT_EXPIRE_PASSWD    As Long = &H10000Private Const STILL_ACTIVE             As Long = &H103&Private Const UF_NORMAL_ACCOUNT        As Long = &H200&Private Const UF_SERVER_TRUST_ACCOUNT  As Long = &H2000&Private Const PROCESS_QUERY_INFORMATION   As Long = &H400&Private Const UF_TEMP_DUPLICATE_ACCOUNT   As Long = &H100&Private Const UF_INTERDOMAIN_TRUST_ACCOUNT   As Long = &H800&Private Const UF_WORKSTATION_TRUST_ACCOUNT   As Long = &H1000&' ---------------------------------------------' The USER_INFO_3 data structure' ---------------------------------------------Private Type USER_INFO_3   usri3_name              As Long   usri3_password          As Long   usri3_password_age      As Long   usri3_priv              As Long   usri3_home_dir          As Long   usri3_comment           As Long   usri3_flags             As Long   usri3_script_path       As Long   usri3_auth_flags        As Long   usri3_full_name         As Long   usri3_usr_comment       As Long   usri3_parms             As Long   usri3_workstations      As Long   usri3_last_logon        As Long   usri3_last_logoff       As Long   usri3_acct_expires      As Long   usri3_max_storage       As Long   usri3_units_per_week    As Long   usri3_logon_hours       As Long   usri3_bad_pw_count      As Long   usri3_num_logons        As Long   usri3_logon_server      As Long   usri3_country_code      As Long   usri3_code_page         As Long   usri3_user_id           As Long   usri3_primary_group_id  As Long   usri3_profile           As Long   usri3_home_dir_drive    As Long   usri3_password_expired  As LongEnd TypePrivate Sub Command1_Click()   Dim p_blnRtn                        As Boolean      On Error Resume Next   p_blnRtn = AddUser("", "MyUser2", "ABCDEF", "Long Name for MyUser", "This is a comment")   If Err.Number <> 0 Then      MsgBox "Error: " & Err.Description & " in the function " & Err.Source   End If   End Sub' *******************************************************' Add a user either to NT -- you *MUST* have admin or'     account operator priviledges to successfully run'     this function' *******************************************************Public Function AddUser(ByVal xi_strServerName As String, _                        ByVal xi_strUserName As String, _                        ByVal xi_strPassword As String, _                        Optional ByVal xi_strUserFullName As String = vbNullString, _                        Optional ByVal xi_strUserComment As String = vbNullString) As Boolean   Dim p_strErr                        As String   Dim p_lngRtn                        As Long   Dim p_lngPtrUserName                As Long   Dim p_lngPtrPassword                As Long   Dim p_lngPtrUserFullName            As Long   Dim p_lngPtrUserComment             As Long   Dim p_lngParameterErr               As Long   Dim p_lngFlags                      As Long   Dim p_abytServerName()              As Byte   Dim p_abytUserName()                As Byte   Dim p_abytPassword()                As Byte   Dim p_abytUserFullName()            As Byte   Dim p_abytUserComment()             As Byte   Dim p_typUserInfo3                  As USER_INFO_3       If xi_strUserFullName = vbNullString Then      xi_strUserName = xi_strUserName   End If      ' ------------------------------------------   ' Create byte arrays to avoid Unicode hassles   ' ------------------------------------------   p_abytServerName = xi_strServerName & vbNullChar   p_abytUserName = xi_strUserName & vbNullChar   p_abytUserFullName = xi_strUserFullName & vbNullChar   p_abytPassword = xi_strPassword & vbNullChar   p_abytUserComment = xi_strUserComment & vbNullChar      ' ------------------------------------------   ' Allocate buffer space   ' ------------------------------------------   p_lngRtn = NetApiBufferAllocate(UBound(p_abytUserName), p_lngPtrUserName)   p_lngRtn = NetApiBufferAllocate(UBound(p_abytUserFullName), p_lngPtrUserFullName)   p_lngRtn = NetApiBufferAllocate(UBound(p_abytPassword), p_lngPtrPassword)   p_lngRtn = NetApiBufferAllocate(UBound(p_abytUserComment), p_lngPtrUserComment)      ' ------------------------------------------   ' Get pointers to the byte arrays   ' ------------------------------------------   p_lngPtrUserName = VarPtr(p_abytUserName(0))   p_lngPtrUserFullName = VarPtr(p_abytUserFullName(0))   p_lngPtrPassword = VarPtr(p_abytPassword(0))   p_lngPtrUserComment = VarPtr(p_abytUserComment(0))      ' ------------------------------------------   ' Fill the VB structure   ' ------------------------------------------   p_lngFlags = UF_NORMAL_ACCOUNT Or _                UF_SCRIPT Or _                UF_DONT_EXPIRE_PASSWD   With p_typUserInfo3      .usri3_acct_expires = TIMEQ_FOREVER                ' Never expires      .usri3_comment = p_lngPtrUserComment               ' Comment      .usri3_flags = p_lngFlags                          ' There are a number of variations      .usri3_full_name = p_lngPtrUserFullName            ' User's full name      .usri3_max_storage = USER_MAXSTORAGE_UNLIMITED     ' Can use any amount of disk space      .usri3_name = p_lngPtrUserName                     ' Name of user account      .usri3_password = p_lngPtrPassword                 ' Password for user account      .usri3_primary_group_id = DOMAIN_GROUP_RID_USERS   ' You MUST use this constant for NetUserAdd      .usri3_script_path = 0&       ' Path of user's logon script      .usri3_auth_flags = 0&        ' Ignored by NetUserAdd      .usri3_bad_pw_count = 0&      ' Ignored by NetUserAdd      .usri3_code_page = 0&         ' Code page for user's language      .usri3_country_code = 0&      ' Country code for user's language      .usri3_home_dir = 0&          ' Can specify path of home directory of this user      .usri3_home_dir_drive = 0&    ' Drive letter assign to user's profile      .usri3_last_logoff = 0&       ' Not needed when adding a user      .usri3_last_logon = 0&        ' Ignored by NetUserAdd      .usri3_logon_hours = 0&       ' Null means no restrictions      .usri3_logon_server = 0&      ' Null means logon to domain server      .usri3_num_logons = 0&        ' Ignored by NetUserAdd      .usri3_parms = 0&             ' Used by specific applications      .usri3_password_age = 0&      ' Ignored by NetUserAdd      .usri3_password_expired = 0&  ' None-zero means user must change password at next logon      .usri3_priv = 0&              ' Ignored by NetUserAdd      .usri3_profile = 0&           ' Path to a user's profile      .usri3_units_per_week = 0&    ' Ignored by NetUserAdd      .usri3_user_id = 0&           ' Ignored by NetUserAdd      .usri3_usr_comment = 0&       ' User comment      .usri3_workstations = 0&      ' Workstations a user can log onto (null = all stations)   End With      ' ------------------------------------------   ' Attempt to add the user   ' ------------------------------------------   p_lngRtn = NetUserAdd(p_abytServerName(0), _                         constUserInfoLevel3, _                         p_typUserInfo3, _                         p_lngParameterErr)      ' ------------------------------------------   ' Check for error   ' ------------------------------------------   If p_lngRtn <> 0 Then      AddUser = False      Select Case p_lngRtn         Case ERROR_ACCESS_DENIED            p_strErr = "User doesn't have sufficient access rights."         Case NERR_GroupExists            p_strErr = "The group already exists."         Case NERR_NotPrimary            p_strErr = "Can only do this operation on the PDC of the domain."         Case NERR_UserExists            p_strErr = "The user account already exists."         Case NERR_PasswordTooShort            p_strErr = "The password is shorter than required."         Case NERR_InvalidComputer            p_strErr = "The computer name is invalid."         Case Else            p_strErr = "Unknown error #" & CStr(p_lngRtn)      End Select            On Error GoTo 0      Err.Raise Number:=p_lngRtn, _                Description:=p_strErr & vbCrLf & _                             "Error in parameter " & p_lngParameterErr & _                             " when attempting to add the user, " & xi_strUserName, _                Source:="Form1.AddUser"   Else      AddUser = True   End If   ' ------------------------------------------   ' Be a good programmer and free the memory   '     you've allocated   ' ------------------------------------------   p_lngRtn = NetApiBufferFree(p_lngPtrUserName)   p_lngRtn = NetApiBufferFree(p_lngPtrPassword)   p_lngRtn = NetApiBufferFree(p_lngPtrUserFullName)   p_lngRtn = NetApiBufferFree(p_lngPtrUserComment)   End Function
Share the Post:
data observability

Data Observability Explained

Data is the lifeblood of any successful business, as it is the driving force behind critical decision-making, insight generation, and strategic development. However, due to its intricate nature, ensuring the

Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved