检查查询筛选器语法
LDAP API 提供了一个简易语法验证函数。 请注意,它仅会验证语法,而不验证筛选器中指定的属性是否存在。
以下函数可验证查询筛选器的语法;如果筛选器有效,则返回 S_OK;如果筛选器无效,则返回 S_FALSE。
HRESULT CheckFilterSyntax(
LPOLESTR szServer, // NULL binds to a DC in the current domain.
LPOLESTR szFilter) // Filter to check.
{
HRESULT hr = S_OK;
DWORD dwReturn;
LDAP *hConnect = NULL; // Connection handle
if (!szFilter)
return E_POINTER;
// LDAP_PORT is the default port, 389
hConnect = ldap_open(szServer, LDAP_PORT);
// Bind using the preferred authentication method on Windows 2000
// and the calling thread's security context.
dwReturn = ldap_bind_s( hConnect, NULL, NULL, LDAP_AUTH_NEGOTIATE );
if (dwReturn==LDAP_SUCCESS) {
dwReturn = ldap_check_filter(hConnect, szFilter);
if (dwReturn==LDAP_SUCCESS)
hr = S_OK;
else
hr = S_FALSE;
}
// Unbind to free the connection.
ldap_unbind( hConnect );
return hr;
}