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How to deal with localized and renamed user and group names

This article was previously published under Q157234
This article illustrates how to obtain localized and renamed account namesassociated with accounts on arbitrary machines.

The approach illustrated below is necessary due to localization ofWindows NT user and group names, and also to allow for arbitrary accountrenaming by system administrators. This approach works by building aSid (security identifier) value that contains a relative ID valuespecifying the user or group of interest. The resultant Sid is then lookedup on the machine of interest and results in a name string that isrelevant on the machine where the lookup took place. This is done becausethe same Sid value may have different associated text on differentmachines, as mentioned above.

Sample code

   /*++   Copyright (c) 1996  Microsoft Corporation   Module Name:       acctname.c   Abstract:       This module illustrates how to obtain user and group names       Associated with accounts that have been renamed or localized. This       sample works by building a Sid value and then looking up the name       associated with that Sid value.       For example, in a default English install of Windows NT, the local       administrators group is called "Administrators." In a default German       install of Windows NT, the local administrators group is called       "Administratoren." This can lead to problems when managing users       and groups if the proper steps are not taken.       The following relative ID values are an index into an account       database that represents a specific user or group. In DOMAIN_USER_       and DOMAIN_GROUP_ cases, the relative ID is appended to the account       domain Sid from the machine of interest. In the DOMAIN_ALIAS_ case,       the relative ID is appended to a well-known Sid representing the       BUILTIN domain that is consistent across machines.       // Well-known users and groups...       #define DOMAIN_USER_RID_ADMIN          (0x000001F4L)       #define DOMAIN_USER_RID_GUEST          (0x000001F5L)       #define DOMAIN_GROUP_RID_ADMINS        (0x00000200L)       #define DOMAIN_GROUP_RID_USERS         (0x00000201L)       #define DOMAIN_GROUP_RID_GUESTS        (0x00000202L)       // well-known aliases ...       #define DOMAIN_ALIAS_RID_ADMINS        (0x00000220L)       #define DOMAIN_ALIAS_RID_USERS         (0x00000221L)       #define DOMAIN_ALIAS_RID_GUESTS        (0x00000222L)       #define DOMAIN_ALIAS_RID_POWER_USERS   (0x00000223L)       #define DOMAIN_ALIAS_RID_ACCOUNT_OPS   (0x00000224L)       #define DOMAIN_ALIAS_RID_SYSTEM_OPS    (0x00000225L)       #define DOMAIN_ALIAS_RID_PRINT_OPS     (0x00000226L)       #define DOMAIN_ALIAS_RID_BACKUP_OPS    (0x00000227L)       #define DOMAIN_ALIAS_RID_REPLICATOR    (0x00000228L)       The following section is for informational purposes and is useful       for visualizing Sid values:       // Universal well-known SIDs:       //        //     Null SID                     S-1-0-0       //     World                        S-1-1-0       //     Local                        S-1-2-0       //     Creator Owner ID             S-1-3-0       //     Creator Group ID             S-1-3-1       //     Creator Owner Server ID      S-1-3-2       //     Creator Group Server ID      S-1-3-3       //        //     (Non-unique IDs)             S-1-4       #define SECURITY_NULL_SID_AUTHORITY       {0,0,0,0,0,0}       #define SECURITY_WORLD_SID_AUTHORITY      {0,0,0,0,0,1}       #define SECURITY_LOCAL_SID_AUTHORITY      {0,0,0,0,0,2}       #define SECURITY_CREATOR_SID_AUTHORITY    {0,0,0,0,0,3}       #define SECURITY_NON_UNIQUE_AUTHORITY     {0,0,0,0,0,4}       #define SECURITY_NULL_RID                 (0x00000000L)       #define SECURITY_WORLD_RID                (0x00000000L)       #define SECURITY_LOCAL_RID                (0X00000000L)       #define SECURITY_CREATOR_OWNER_RID        (0x00000000L)       #define SECURITY_CREATOR_GROUP_RID        (0x00000001L)       #define SECURITY_CREATOR_OWNER_SERVER_RID (0x00000002L)       #define SECURITY_CREATOR_GROUP_SERVER_RID (0x00000003L)       // NT well-known SIDs:       //        //     NT Authority          S-1-5       //     Dialup                S-1-5-1       //        //     Network               S-1-5-2       //     Batch                 S-1-5-3       //     Interactive           S-1-5-4       //     Service               S-1-5-6       //     AnonymousLogon        S-1-5-7       (aka null logon session)       //     Proxy                 S-1-5-8       //     ServerLogon           S-1-5-8       (aka domain controller       //                                            account)       //        //     (Logon IDs)           S-1-5-5-X-Y       //        //     (NT non-unique IDs)   S-1-5-0x15-...       //        //     (Built-in domain)     S-1-5-0x20       #define SECURITY_NT_AUTHORITY           {0,0,0,0,0,5}   // ntifs       #define SECURITY_DIALUP_RID             (0x00000001L)       #define SECURITY_NETWORK_RID            (0x00000002L)       #define SECURITY_BATCH_RID              (0x00000003L)       #define SECURITY_INTERACTIVE_RID        (0x00000004L)       #define SECURITY_SERVICE_RID            (0x00000006L)       #define SECURITY_ANONYMOUS_LOGON_RID    (0x00000007L)       #define SECURITY_PROXY_RID              (0x00000008L)       #define SECURITY_SERVER_LOGON_RID       (0x00000009L)       #define SECURITY_LOGON_IDS_RID          (0x00000005L)       #define SECURITY_LOGON_IDS_RID_COUNT    (3L)       #define SECURITY_LOCAL_SYSTEM_RID       (0x00000012L)       #define SECURITY_NT_NON_UNIQUE          (0x00000015L)       #define SECURITY_BUILTIN_DOMAIN_RID     (0x00000020L)       If no Command line arguments are specified, names are looked up       on the local machine. If argv[1] is present, the lookup occurs       on the specified machine.       For example, acctname.exe \\winbase will look up names from the       machine named \\winbase. If \\winbase is a default German install       of Windows NT, names will appear in German locale.   Author:       Scott Field (sfield)    02-Oct-96   --*/    #define WIN32_LEAN_AND_MEAN   #include <windows.h>   #include <lm.h>   BOOL   LookupAliasFromRid(       LPWSTR TargetComputer,       DWORD Rid,       LPWSTR Name,       PDWORD cchName       );   BOOL   LookupUserGroupFromRid(       LPWSTR TargetComputer,       DWORD Rid,       LPWSTR Name,       PDWORD cchName       );   #define RTN_OK 0   #define RTN_USAGE 1   #define RTN_ERROR 13   int   __cdecl   wmain(       int argc,       wchar_t *argv[]       )   {       LPWSTR TargetComputer;       WCHAR Name[UNLEN+1];       DWORD cchName = UNLEN+1;       if(argc == 2)           TargetComputer = argv[1];   // target specified machine       else           TargetComputer = NULL;      // target local machine       if(!LookupUserGroupFromRid(               TargetComputer,               DOMAIN_USER_RID_ADMIN,               Name,               &cchName               )) {           printf("LookupUserFromRid error! (rc=%lu)\n", GetLastError());           return RTN_ERROR;       }       printf("'Administrator' user name = %ls\n", Name);       cchName = UNLEN; // reset buffer size       if(!LookupAliasFromRid(               TargetComputer,               DOMAIN_ALIAS_RID_ADMINS,               Name,               &cchName               )) {           printf("LookupAliasFromRid error! (rc=%lu)\n", GetLastError());           return RTN_ERROR;       }       printf("'Administrators' local group/alias name = %ls\n", Name);       return RTN_OK;   }   BOOL   LookupAliasFromRid(       LPWSTR TargetComputer,       DWORD Rid,       LPWSTR Name,       PDWORD cchName       )   {       SID_IDENTIFIER_AUTHORITY sia = SECURITY_NT_AUTHORITY;       SID_NAME_USE snu;       PSID pSid;       WCHAR DomainName[DNLEN+1];       DWORD cchDomainName = DNLEN+1;       BOOL bSuccess = FALSE;       //        // Sid is the same regardless of machine, since the well-known       // BUILTIN domain is referenced.       //        if(AllocateAndInitializeSid(               &sia,               2,               SECURITY_BUILTIN_DOMAIN_RID,               Rid,               0, 0, 0, 0, 0, 0,               &pSid               )) {           bSuccess = LookupAccountSidW(                   TargetComputer,                   pSid,                   Name,                   cchName,                   DomainName,                   &cchDomainName,                   &snu                   );           FreeSid(pSid);       }       return bSuccess;   }   BOOL   LookupUserGroupFromRid(       LPWSTR TargetComputer,       DWORD Rid,       LPWSTR Name,       PDWORD cchName       )   {       PUSER_MODALS_INFO_2 umi2;       NET_API_STATUS nas;       UCHAR SubAuthorityCount;       PSID pSid;       SID_NAME_USE snu;       WCHAR DomainName[DNLEN+1];       DWORD cchDomainName = DNLEN+1;       BOOL bSuccess = FALSE; // assume failure       //        // get the account domain Sid on the target machine       // note: if you were looking up multiple sids based on the same       // account domain, only need to call this once.       //        nas = NetUserModalsGet(TargetComputer, 2, (LPBYTE *)&umi2);       if(nas != NERR_Success) {           SetLastError(nas);           return FALSE;       }       SubAuthorityCount = *GetSidSubAuthorityCount                            (umi2->usrmod2_domain_id);       //        // allocate storage for new Sid. account domain Sid + account Rid       //        pSid = (PSID)HeapAlloc(GetProcessHeap(), 0,               GetSidLengthRequired((UCHAR)(SubAuthorityCount + 1)));       if(pSid != NULL) {           if(InitializeSid(                   pSid,                   GetSidIdentifierAuthority(umi2->usrmod2_domain_id),                   (BYTE)(SubAuthorityCount+1)                   )) {               DWORD SubAuthIndex = 0;               //                // copy existing subauthorities from account domain Sid into               // new Sid               //                for( ; SubAuthIndex < SubAuthorityCount ; SubAuthIndex++) {                   *GetSidSubAuthority(pSid, SubAuthIndex) =                   *GetSidSubAuthority(umi2->usrmod2_domain_id,                                       SubAuthIndex);               }               //                // append Rid to new Sid               //                *GetSidSubAuthority(pSid, SubAuthorityCount) = Rid;               bSuccess = LookupAccountSidW(                       TargetComputer,                       pSid,                       Name,                       cchName,                       DomainName,                       &cchDomainName,                       &snu                       );           }           HeapFree(GetProcessHeap(), 0, pSid);       }       NetApiBufferFree(umi2);       return bSuccess;   }				
rename user group usrmgr

Article ID: 157234 - Last Review: 11/21/2006 15:38:00 - Revision: 5.1

Microsoft Win32 Application Programming Interface

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