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);
}
}
internal DhcpServerException(string apiFunction, DhcpErrors error, string additionalMessage)
{
ApiFunction = apiFunction;
this.error = error;
ApiErrorMessage = BuildApiErrorMessage(error);
message = BuildMessage(apiFunction, additionalMessage, error, ApiErrorMessage);
}
internal DhcpServerException(string ApiFunction, DhcpErrors Error)
{
this.ApiFunction = ApiFunction;
this.error = Error;
this.errorMessage = new Lazy <string>(this.GetApiErrorMessage);
}
internal static DhcpServerAuditLog GetParams(DhcpServer Server)
{
string auditLogDir;
int diskCheckInterval, maxLogFilesSize, minSpaceOnDisk;
DhcpErrors result = Api.DhcpAuditLogGetParams(Server.ipAddress.ToString(), 0, out auditLogDir, out diskCheckInterval, out maxLogFilesSize, out minSpaceOnDisk);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpAuditLogGetParams", result);
}
return(new DhcpServerAuditLog(auditLogDir, diskCheckInterval, maxLogFilesSize, minSpaceOnDisk));
}
private string BuildApiErrorMessage(DhcpErrors error)
{
var errorType = typeof(DhcpErrors).GetMember(error.ToString());
if (errorType.Length != 0)
{
var errorAttribute = errorType[0].GetCustomAttributes(typeof(DhcpErrorDescriptionAttribute), false);
if (errorAttribute.Length != 0)
{
return(((DhcpErrorDescriptionAttribute)errorAttribute[0]).Description);
}
}
return("Unknown Error");
}
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 string BuildMessage(string apiFunction, string additionalMessage, DhcpErrors error, string apiErrorMessage)
{
var builder = new StringBuilder();
if (apiFunction != null)
{
builder.Append("An error occurred calling '").Append(apiFunction).Append("'. ");
}
if (additionalMessage != null)
{
builder.Append(additionalMessage).Append(". ");
}
builder.Append(apiErrorMessage).Append(" [").Append(error.ToString()).Append(' ').Append((uint)error).Append(']');
return(builder.ToString());
}
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);
}
}
}
internal DhcpServerException(string apiFunction, DhcpErrors error)
: this(apiFunction, error, null)
{
}
internal DhcpServerException(string ApiFunction, DhcpErrors Error, string AdditionalMessage)
: this(ApiFunction, Error)
{
this.additionalMessage = AdditionalMessage;
}
