private static DhcpServerClient GetClientVQ(DhcpServer Server, IntPtr SearchInfo)
{
try
{
IntPtr clientPtr;
DhcpErrors result = Api.DhcpGetClientInfoVQ(Server.ipAddress.ToString(), SearchInfo, out clientPtr);
if (result == DhcpErrors.JET_ERROR)
{
return(null);
}
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetClientInfoVQ", result);
}
try
{
var client = (DHCP_CLIENT_INFO_VQ)Marshal.PtrToStructure(clientPtr, typeof(DHCP_CLIENT_INFO_VQ));
return(DhcpServerClient.FromNative(Server, client));
}
finally
{
Api.DhcpRpcFreeMemory(clientPtr);
}
}
finally
{
Marshal.FreeHGlobal(SearchInfo);
}
}
private static IEnumerable <DhcpServerClient> GetClientsVQ(DhcpServer Server, DHCP_IP_ADDRESS SubnetAddress)
{
IntPtr clientsPtr;
IntPtr resultHandle = IntPtr.Zero;
int clientsRead, clientsTotal;
DhcpErrors result = Api.DhcpEnumSubnetClientsVQ(Server.ipAddress.ToString(), SubnetAddress, ref resultHandle, 65536, out clientsPtr, out clientsRead, out clientsTotal);
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA)
{
throw new DhcpServerException("DhcpEnumSubnetClientsVQ", result);
}
while (result == DhcpErrors.SUCCESS || result == DhcpErrors.ERROR_MORE_DATA)
{
try
{
using (var clients = DHCP_CLIENT_INFO_ARRAY_VQ.Read(clientsPtr))
{
foreach (var client in clients.Clients)
{
yield return(DhcpServerClient.FromNative(Server, client.Item2));
}
}
}
finally
{
Api.DhcpRpcFreeMemory(clientsPtr);
clientsPtr = IntPtr.Zero;
}
if (result == DhcpErrors.SUCCESS)
{
yield break; // Last results
}
clientsRead = 0;
clientsTotal = 0;
result = Api.DhcpEnumSubnetClientsVQ(Server.ipAddress.ToString(), SubnetAddress, ref resultHandle, 65536, out clientsPtr, out clientsRead, out clientsTotal);
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA)
{
throw new DhcpServerException("DhcpEnumSubnetClientsVQ", result);
}
}
}
private static IEnumerable <DhcpServerClient> GetClientsV5(DhcpServer Server, DHCP_IP_ADDRESS SubnetAddress)
{
IntPtr clientsPtr;
IntPtr resultHandle = IntPtr.Zero;
int clientsRead, clientsTotal;
DhcpErrors result = Api.DhcpEnumSubnetClientsV5(Server.ipAddress.ToString(), SubnetAddress, ref resultHandle, 65536, out clientsPtr, out clientsRead, out clientsTotal);
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA && result != DhcpErrors.ERROR_NO_MORE_ITEMS)
{
throw new DhcpServerException("DhcpEnumSubnetClientsV5", result);
}
while (result == DhcpErrors.SUCCESS || result == DhcpErrors.ERROR_MORE_DATA)
{
try
{
var clients = (DHCP_CLIENT_INFO_ARRAY_V5)Marshal.PtrToStructure(clientsPtr, typeof(DHCP_CLIENT_INFO_ARRAY_V5));
foreach (var client in clients.Clients)
{
yield return(DhcpServerClient.FromNative(Server, client));
}
}
finally
{
Api.DhcpRpcFreeMemory(clientsPtr);
}
if (result == DhcpErrors.SUCCESS)
{
yield break; // Last results
}
result = Api.DhcpEnumSubnetClientsV5(Server.ipAddress.ToString(), SubnetAddress, ref resultHandle, 65536, out clientsPtr, out clientsRead, out clientsTotal);
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA && result != DhcpErrors.ERROR_NO_MORE_ITEMS)
{
throw new DhcpServerException("DhcpEnumSubnetClientsV5", result);
}
}
}