[2/2](try 2)advapi: handle fully qualified account names for well known sids in LookupAccountName

[Alexandre Julliard]

Aric Stewart <aric at codeweavers.com> writes:

> @@ -2667,11 +2669,23 @@ BOOL WINAPI LookupAccountNameW( LPCWSTR lpSystemName, LPCWSTR lpAccountName, PSI
>      }
>  
>      /* Check well known SIDs first */
> +    if (strchrW(lpAccountName,'\\'))
> +    {
> +        lpAccountNamePtr = strrchrW(lpAccountName,'\\');
> +        lpAccountNamePtr++;
> +        lpDomainNamePtr = lpAccountName;
> +    }
> +    else
> +        lpAccountNamePtr = lpAccountName;
>  
>      for (i = 0; i < (sizeof(ACCOUNT_SIDS) / sizeof(ACCOUNT_SIDS[0])); i++)
>      {
> -        if (!strcmpiW(lpAccountName, ACCOUNT_SIDS[i].account) ||
> -            (ACCOUNT_SIDS[i].alias && !strcmpiW(lpAccountName, ACCOUNT_SIDS[i].alias)))
> +        /* check domain first */
> +        if (lpDomainNamePtr && strncmpiW(lpDomainNamePtr, ACCOUNT_SIDS[i].domain, strlenW(ACCOUNT_SIDS[i].domain)))
> +            continue;

You always need to check that the next char is a terminator when using
functions like strncmpiW.

-- 
Alexandre Julliard
julliard at winehq.org