CHAR szBuf[MAX_PATH + 1]; 
CHAR* pszBuf = szBuf; 
DWORD dwBuf = MAX_PATH + 1; 
DWORD dwMaxBufSize = 1024; 
LPSTR szVariableName = "ALL_RAW"; 

if ( !pECB->GetServerVariable(pECB->ConnID, 
                              szVariableName, 
                              pszBuf, 
                              &dwBuf) ) 
{ 
    if ( GetLastError() == ERROR_INSUFFICIENT_BUFFER ) 
    { 
        // 
        // Not large enough buffer.  Reallocate. 
        // Make sure to not reallocate size blindly (DoS)... 
        // 
        if ( dwBuf > dwMaxBufSize ) 
        { 
            goto Failed; 
        } 

        pszBuf = new CHAR[dwBuf]; 

        if ( pszBuf != NULL ) 
        { 
            // 
            // Try GetServerVariable again 
            // 
            if ( !pECB->GetServerVariable(pECB->ConnID, 
                                          szVariableName, 
                                          pszBuf, 
                                          &dwBuf) ) 
            { 
                // 
                // Unexpected failure.  Fail 
                // 
                goto Failed; 
            } 

            // 
            // Successfully fetched value into heap buffer 
            // 
        } 
        else 
        { 
            // 
            // Failed to allocate memory.  Fail 
            // 
            goto Failed; 
        } 
    } 
    else 
    { 
        // 
        // Deal with GetLastError() however you wish 
        // May optionally decide to fail 
        // 
        // GetLastError() == ERROR_INVALID_INDEX 
        //   szVariableName is not a valid server variable name 
        // 
        goto Failed; 
    } 
} 


// 
// pszBuf points to variable value.  Use it. 
// dwBuf indicates how big the buffer is (NULL included) 
// 

// 
// Rest of code 
// 



// 
// If we've allocated a buffer, cleanup 
// 
Failed: 
if ( pszBuf != NULL && 
     pszBuf != szBuf ) 
{ 
    delete [] pszBuf; 
}