internal static IEnumerable <DhcpServerOption> GetAllOptions(DhcpServer Server)
{
IntPtr optionsPtr;
var result = Api.DhcpGetAllOptions(Server.ipAddress.ToString(), 0, out optionsPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetAllOptions", result);
}
try
{
var bytes = new byte[64];
Marshal.Copy(optionsPtr, bytes, 0, 64);
var options = (DHCP_ALL_OPTIONS)Marshal.PtrToStructure(optionsPtr, typeof(DHCP_ALL_OPTIONS));
foreach (var option in options.NonVendorOptions.Options)
{
yield return(DhcpServerOption.FromNative(Server, option, null, null));
}
foreach (var option in options.VendorOptions)
{
yield return(DhcpServerOption.FromNative(Server, option));
}
}
finally
{
Api.DhcpRpcFreeMemory(optionsPtr);
}
}
private static IEnumerable <DhcpServerOption> EnumOptionsV5(DhcpServer Server, string ClassName, string VendorName)
{
IntPtr enumInfoPtr;
int elementsRead, elementsTotal;
IntPtr resumeHandle = IntPtr.Zero;
uint flags = VendorName == null ? 0 : Constants.DHCP_FLAGS_OPTION_IS_VENDOR;
var result = Api.DhcpEnumOptionsV5(Server.ipAddress.ToString(), flags, ClassName, VendorName, ref resumeHandle, 0xFFFFFFFF, out enumInfoPtr, out elementsRead, out elementsTotal);
if (result == DhcpErrors.ERROR_NO_MORE_ITEMS || result == DhcpErrors.EPT_S_NOT_REGISTERED)
{
yield break;
}
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA)
{
throw new DhcpServerException("DhcpEnumOptions", result);
}
if (elementsRead == 0)
{
yield break;
}
try
{
var enumInfo = (DHCP_OPTION_ARRAY)Marshal.PtrToStructure(enumInfoPtr, typeof(DHCP_OPTION_ARRAY));
foreach (var option in enumInfo.Options)
{
yield return(DhcpServerOption.FromNative(Server, option, VendorName, ClassName));
}
}
finally
{
Api.DhcpRpcFreeMemory(enumInfoPtr);
}
}
private static DhcpServerOption GetOptionV5(DhcpServer Server, int OptionId, string ClassName, string VendorName)
{
IntPtr optionPtr;
uint flags = VendorName == null ? 0 : Constants.DHCP_FLAGS_OPTION_IS_VENDOR;
var result = Api.DhcpGetOptionInfoV5(Server.ipAddress.ToString(), flags, OptionId, ClassName, VendorName, out optionPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetOptionInfoV5", result);
}
try
{
var option = (DHCP_OPTION)Marshal.PtrToStructure(optionPtr, typeof(DHCP_OPTION));
return(DhcpServerOption.FromNative(Server, option, ClassName, VendorName));
}
finally
{
Api.DhcpRpcFreeMemory(optionPtr);
}
}
private static DhcpServerOption GetOptionV0(DhcpServer Server, int OptionId)
{
IntPtr optionPtr;
var result = Api.DhcpGetOptionInfo(Server.ipAddress.ToString(), OptionId, out optionPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetOptionInfo", result);
}
try
{
var option = (DHCP_OPTION)Marshal.PtrToStructure(optionPtr, typeof(DHCP_OPTION));
return(DhcpServerOption.FromNative(Server, option, null, null));
}
finally
{
Api.DhcpRpcFreeMemory(optionPtr);
}
}
