VC++中如何判断当前用户是否具有管理员权限

代码一：

BOOL   CRSysInfo::IsUserAdminPrivilege(const   CString   &   strUserName,BOOL   &   bAdminPrivilege)
{
bAdminPrivilege   =   FALSE;

PSID pSid   =   NULL;
DWORD cbSid   =   0;
LPTSTR bufDomain   =   NULL;
DWORD cbDomain   =   0;
SID_NAME_USE type;
LookupAccountName(NULL,strUserName,pSid,&cbSid,bufDomain,&cbDomain,&type);
if(cbSid)
{
pSid   =   new   byte[cbSid];
bufDomain   =   new   TCHAR[cbDomain];
if(LookupAccountName(NULL,strUserName,pSid,&cbSid,bufDomain,&cbDomain,&type))
{
PSID_IDENTIFIER_AUTHORITY   pAutho   =   GetSidIdentifierAuthority(pSid);
DWORD   dwErr   =   GetLastError();
if(!dwErr)
{
SID_IDENTIFIER_AUTHORITY   AdminAuth   =   SECURITY_NT_AUTHORITY;
bAdminPrivilege   =   !memcmp(pAutho,&AdminAuth,sizeof(SID_IDENTIFIER_AUTHORITY));
}
}
delete []pSid;
delete []bufDomain;
}
if(bAdminPrivilege)
return TRUE;

DWORD   rc;
USER_INFO_1   *info;
          rc   =   NetUserGetInfo(NULL,_bstr_t(strUserName),1,(byte**)&info);
if(rc   ==   NERR_Success)
{
bAdminPrivilege   =   info->usri1_priv   ==   USER_PRIV_ADMIN;
NetApiBufferFree(info);
}

return rc   ==   NERR_Success;
}

代码二：

BOOL ExIsAdmin()
{
#define ACCESS_READ 1
#define ACCESS_WRITE 2

if(g_bIsNT==FALSE)
return TRUE;
HANDLE hToken;
DWORD dwStatus;
DWORD dwAccessMask;
DWORD dwAccessDesired;
DWORD dwACLSize;
DWORD dwStructureSize = sizeof(PRIVILEGE_SET);
PACL pACL = NULL;
PSID psidAdmin = NULL;
BOOL bReturn = FALSE;
PRIVILEGE_SET ps;
GENERIC_MAPPING GenericMapping;
PSECURITY_DESCRIPTOR psdAdmin = NULL;
SID_IDENTIFIER_AUTHORITY SystemSidAuthority = SECURITY_NT_AUTHORITY;

if(!ImpersonateSelf(SecurityImpersonation))
goto LeaveIsAdmin;

if (!OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, FALSE, &hToken))
{
if (GetLastError() != ERROR_NO_TOKEN)
goto LeaveIsAdmin;

if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
goto LeaveIsAdmin;

if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
goto LeaveIsAdmin;
}

if (!AllocateAndInitializeSid(&SystemSidAuthority, 2,
SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS,
0, 0, 0, 0, 0, 0, &psidAdmin))
goto LeaveIsAdmin;

psdAdmin = LocalAlloc(LPTR, SECURITY_DESCRIPTOR_MIN_LENGTH);
if (psdAdmin == NULL)
goto LeaveIsAdmin;

if (!InitializeSecurityDescriptor(psdAdmin,
SECURITY_DESCRIPTOR_REVISION))
goto LeaveIsAdmin;

dwACLSize = sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE) +
GetLengthSid(psidAdmin) - sizeof(DWORD);

pACL = (PACL)LocalAlloc(LPTR, dwACLSize);
if (pACL == NULL)
goto LeaveIsAdmin;

if (!InitializeAcl(pACL, dwACLSize, ACL_REVISION2))
goto LeaveIsAdmin;

dwAccessMask= ACCESS_READ | ACCESS_WRITE;

if (!AddAccessAllowedAce(pACL, ACL_REVISION2, dwAccessMask, psidAdmin))
goto LeaveIsAdmin;

if (!SetSecurityDescriptorDacl(psdAdmin, TRUE, pACL, FALSE))
goto LeaveIsAdmin;

if(!SetSecurityDescriptorGroup(psdAdmin, psidAdmin, FALSE))
goto LeaveIsAdmin;
if(!SetSecurityDescriptorOwner(psdAdmin, psidAdmin, FALSE))
goto LeaveIsAdmin;

if (!IsValidSecurityDescriptor(psdAdmin))
goto LeaveIsAdmin;

dwAccessDesired = ACCESS_READ;

GenericMapping.GenericRead = ACCESS_READ;
GenericMapping.GenericWrite = ACCESS_WRITE;
GenericMapping.GenericExecute = 0;
GenericMapping.GenericAll = ACCESS_READ | ACCESS_WRITE;

if (!AccessCheck(psdAdmin, hToken, dwAccessDesired,
&GenericMapping, &ps, &dwStructureSize, &dwStatus, &bReturn))
goto LeaveIsAdmin;

if(!RevertToSelf())
bReturn = FALSE;

LeaveIsAdmin:

if (pACL) LocalFree(pACL);
if (psdAdmin) LocalFree(psdAdmin);
if (psidAdmin) FreeSid(psidAdmin);

return bReturn;

}