public void Process(DHCPRequest dhcpRequest)
{
var requestType = dhcpRequest.GetMsgType();
Trace.WriteLine(requestType + " Proxy Request From " +
Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true) + " " +
dhcpRequest.GetSourceIP() + ":" + dhcpRequest.GetSourcePort());
var clientHardwareAddress = new PhysicalAddress(dhcpRequest.GetChaddr());
if (DHCPServer.AclList.ContainsKey(clientHardwareAddress) && !DHCPServer.AclList[clientHardwareAddress] ||
!DHCPServer.AclList.ContainsKey(clientHardwareAddress) && !Settings.AllowAll)
{
Trace.WriteLine("Request Denied By ACL - Ignoring");
return;
}
var vendorId = dhcpRequest.GetVendorOptionData();
if (vendorId != null)
{
var strVendorId = Utility.ByteArrayToString(vendorId, true);
Trace.WriteLine("Vendor Class Id " + strVendorId + " " + Encoding.Default.GetString(vendorId));
if (requestType == DHCPMsgType.DHCPREQUEST && strVendorId.StartsWith("505845436C69656E74"))
{
//Expected Format: 505845436C69656E743A417263683A30303030303A554E44493A303032303031 (PXEClient:Arch:00000:UNDI:002001)
ProcessProxyRequest(dhcpRequest);
}
else
{
Trace.WriteLine("Request Is Not A Proxy PXE Request - Ignoring");
}
}
else
{
Trace.WriteLine("No Proxy Vendor Class Id Supplied - Ignoring");
}
Trace.WriteLine("");
}
static void SendSelectedNetBoot(DHCPRequest dhcpRequest)
{
//This Reply is the client selecting which image they want to boot from
Trace.WriteLine("Request Is An Apple NetBoot Selection");
var vendorSpecificInformation = dhcpRequest.GetVendorSpecificInformation();
var strVendorSpecificInformation = Utility.ByteArrayToString(vendorSpecificInformation, true);
var imageIdHex = strVendorSpecificInformation.Substring(strVendorSpecificInformation.Length - 4);
var targetNbi = Settings.RootPath.Replace("[nbi_id]", imageIdHex);
var targetAppleBootFile = Settings.AppleBootFile.Replace("[nbi_id]", imageIdHex);
var clientHardwareAddress = new PhysicalAddress(dhcpRequest.GetChaddr());
var replyOptions = new DHCPReplyOptions();
replyOptions.NextServer = IPAddress.Parse(Settings.NextServer);
replyOptions.OtherOptions.Add(DHCPOption.Vendorclassidentifier, Settings.AAPLBSDPC);
replyOptions.OtherOptions.Add(DHCPOption.VendorSpecificInformation, Utility.StringToByteArray(Settings.VendorInfo));
replyOptions.OtherOptions.Add(DHCPOption.RootPath, Encoding.UTF8.GetBytes(targetNbi));
//Modification to allow both a clonedeploy linux and osx imaging environment to work simultaneously without two proxy dhcp servers running
if (imageIdHex == "0F49" || imageIdHex == "98DB") //image ids of 3913 or 39131
{
replyOptions.BootFileName = Settings.AppleEFIBootFile;
}
else
{
replyOptions.BootFileName = targetAppleBootFile;
}
if (DHCPServer.Reservations.ContainsKey(clientHardwareAddress))
{
replyOptions.NextServer =
IPAddress.Parse(DHCPServer.Reservations[clientHardwareAddress].ReserveNextServer);
replyOptions.BootFileName = DHCPServer.Reservations[clientHardwareAddress].ReserveBootFile;
}
var reply = new DHCPReply(dhcpRequest);
reply.Send(DHCPMsgType.DHCPACK, replyOptions, 68);
}
static void ProcessProxyRequest(DHCPRequest dhcpRequest)
{
Trace.WriteLine("Request Is A Proxy PXE Boot");
bool isWebReservation = false;
bool isLocalReservation = false;
var replyOptions = new DHCPReplyOptions();
var clientHardwareAddress = new PhysicalAddress(dhcpRequest.GetChaddr());
if (DHCPServer.Reservations.ContainsKey(clientHardwareAddress))
{
isLocalReservation = true;
Trace.WriteLine("Local Reservation Found");
replyOptions.NextServer =
IPAddress.Parse(DHCPServer.Reservations[clientHardwareAddress].ReserveNextServer);
replyOptions.BootFileName = DHCPServer.Reservations[clientHardwareAddress].ReserveBootFile;
if (DHCPServer.Reservations[clientHardwareAddress].ReserveBCDFile != null)
{
replyOptions.OtherOptions.Add(DHCPOption.Wpad,
Encoding.UTF8.GetBytes(DHCPServer.Reservations[clientHardwareAddress].ReserveBCDFile));
}
}
else if (Settings.CheckWebReservations)
{
if (!string.IsNullOrEmpty(Settings.CloneDeployServiceURL))
{
ProxyReservationDTO webReservation;
lock (dhcpRequest)
{
var mac = Utility.AddHexColons(Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true));
webReservation = new APICall().ProxyDhcpApi.GetProxyReservation(mac);
}
if (webReservation.BootFile != null && webReservation.BootFile != "NotFound" &&
webReservation.BootFile != "NotEnabled")
{
isWebReservation = true;
Trace.WriteLine("Web Reservation Found");
if (!string.IsNullOrEmpty(webReservation.NextServer))
{
replyOptions.NextServer = IPAddress.Parse(webReservation.NextServer);
}
else
{
if (Settings.CheckTftpCluster)
{
var mac = Utility.AddHexColons(Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true));
replyOptions.NextServer = new TftpCluster().GetNextServer(mac);
}
else
{
replyOptions.NextServer = IPAddress.Parse(Settings.NextServer);
}
}
replyOptions.BootFileName = webReservation.BootFile;
if (webReservation.BcdFile != null)
{
replyOptions.OtherOptions.Add(DHCPOption.Wpad,
Encoding.UTF8.GetBytes(webReservation.BcdFile));
}
}
}
}
if (!isWebReservation && !isLocalReservation)
{
if (Settings.CheckTftpCluster && !string.IsNullOrEmpty(Settings.CloneDeployServiceURL))
{
var mac = Utility.AddHexColons(Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true));
replyOptions.NextServer = new TftpCluster().GetNextServer(mac);
}
else
{
replyOptions.NextServer = IPAddress.Parse(Settings.NextServer);
}
var clientArch = dhcpRequest.GetClientSystemArch();
if (clientArch != DHCPRequest.ClientSystemArch.Error)
{
Trace.WriteLine("Client Architecture: " + clientArch);
bool unsupportedArch = false;
switch (clientArch)
{
case DHCPRequest.ClientSystemArch.Intelx86PC: //legacy bios
replyOptions.BootFileName = Settings.BiosBootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx86"));
break;
case DHCPRequest.ClientSystemArch.EFIIA32: //efi x86
replyOptions.BootFileName = Settings.Efi32BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx86"));
break;
case DHCPRequest.ClientSystemArch.EFIBC: //efi x64
replyOptions.BootFileName = Settings.Efi64BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx64"));
break;
case DHCPRequest.ClientSystemArch.EFIx8664: //efi x64
replyOptions.BootFileName = Settings.Efi64BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx64"));
break;
default:
Trace.WriteLine("Unsupported Client System Architecture " + clientArch + " - Ignoring");
unsupportedArch = true;
break;
}
if (unsupportedArch)
{
return;
}
}
else
{
Trace.WriteLine("Unsupported Client System Architecture " + clientArch + " - Ignoring");
return;
}
}
var replyPort = dhcpRequest.GetSourcePort() == 4011 ? 4011 : 68;
var reply = new DHCPReply(dhcpRequest);
reply.Send(DHCPMsgType.DHCPACK, replyOptions, replyPort);
}
static void ProcessProxyRequest(DHCPRequest dhcpRequest)
{
Trace.WriteLine("Request Is A Proxy PXE Boot");
var replyOptions = new DHCPReplyOptions();
replyOptions.NextServer = IPAddress.Parse(Settings.NextServer);
var clientHardwareAddress = new PhysicalAddress(dhcpRequest.GetChaddr());
if (DHCPServer.Reservations.ContainsKey(clientHardwareAddress))
{
Trace.WriteLine("Local Reservation Found");
replyOptions.NextServer =
IPAddress.Parse(DHCPServer.Reservations[clientHardwareAddress].ReserveNextServer);
replyOptions.BootFileName = DHCPServer.Reservations[clientHardwareAddress].ReserveBootFile;
if (DHCPServer.Reservations[clientHardwareAddress].ReserveBCDFile != null)
{
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(DHCPServer.Reservations[clientHardwareAddress].ReserveBCDFile));
}
}
else
{
//Check for Web Reservation
var webReservation = new WebReservation();
if (!string.IsNullOrEmpty(Settings.CloneDeployServiceURL))
{
lock (dhcpRequest)
{
using (var client = new WebClient())
{
var mac = Utility.AddHexColons(Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true));
var json =
client.DownloadString(Settings.CloneDeployServiceURL + "GetProxyReservation?mac=" + mac);
webReservation = JsonConvert.DeserializeObject <WebReservation>(json);
}
}
}
if (webReservation.BootFile != null && webReservation.BootFile != "NotFound" &&
webReservation.BootFile != "NotEnabled")
{
Trace.WriteLine("Web Reservation Found");
replyOptions.NextServer = IPAddress.Parse(webReservation.NextServer);
replyOptions.BootFileName = webReservation.BootFile;
if (webReservation.BcdFile != null)
{
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(webReservation.BcdFile));
}
}
else
{
Trace.WriteLine("No Reservation Found. Using Default config");
var clientArch = dhcpRequest.GetClientSystemArch();
if (clientArch != DHCPRequest.ClientSystemArch.Error)
{
Trace.WriteLine("Client Architecture: " + clientArch);
bool unsupportedArch = false;
switch (clientArch)
{
case DHCPRequest.ClientSystemArch.Intelx86PC: //legacy bios
replyOptions.BootFileName = Settings.BiosBootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx86"));
break;
case DHCPRequest.ClientSystemArch.EFIIA32: //efi x86
replyOptions.BootFileName = Settings.Efi32BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx86"));
break;
case DHCPRequest.ClientSystemArch.EFIBC: //efi x64
replyOptions.BootFileName = Settings.Efi64BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx64"));
break;
case DHCPRequest.ClientSystemArch.EFIx8664: //efi x64
replyOptions.BootFileName = Settings.Efi64BootFile;
replyOptions.OtherOptions.Add(DHCPOption.Wpad, Encoding.UTF8.GetBytes(@"\boot\BCDx64"));
break;
default:
Trace.WriteLine("Unsupported Client System Architecture " + clientArch + " - Ignoring");
unsupportedArch = true;
break;
}
if (unsupportedArch)
{
return;
}
}
else
{
Trace.WriteLine("Unsupported Client System Architecture " + clientArch + " - Ignoring");
return;
}
}
}
var replyPort = dhcpRequest.GetSourcePort() == 4011 ? 4011 : 68;
var reply = new DHCPReply(dhcpRequest);
reply.Send(DHCPMsgType.DHCPACK, replyOptions, replyPort);
}
public void Process(DHCPRequest dhcpRequest)
{
var requestType = dhcpRequest.GetMsgType();
if (requestType != DHCPMsgType.DHCPDISCOVER && requestType != DHCPMsgType.DHCPINFORM)
{
return;
}
var clientHardwareAddress = new PhysicalAddress(dhcpRequest.GetChaddr());
if (DHCPServer.AclList.ContainsKey(clientHardwareAddress) && !DHCPServer.AclList[clientHardwareAddress] ||
!DHCPServer.AclList.ContainsKey(clientHardwareAddress) && !Settings.AllowAll)
{
Trace.WriteLine("Request Denied By ACL - Ignoring");
return;
}
var vendorId = dhcpRequest.GetVendorOptionData();
if (vendorId != null)
{
Trace.WriteLine(requestType + " Request From " +
Utility.ByteArrayToString(dhcpRequest.GetChaddr(), true));
var strVendorId = Utility.ByteArrayToString(vendorId, true);
//Expected Format: 505845436C69656E743A417263683A30303030303A554E44493A303032303031 (PXEClient:Arch:00000:UNDI:002001)
if (strVendorId.StartsWith("505845436C69656E74"))
{
ProcessPXERequest(dhcpRequest);
}
if (!Settings.ListenBSDP)
{
return;
}
Trace.WriteLine("Vendor Class Id " + strVendorId);
//Expected Format: 4141504C42534450432F693338362F694D616331342C33 (AAPLBSDPC/i386/iMac14,3)
if (strVendorId.StartsWith("4141504C4253445043"))
{
var vendorSpecificInformation = dhcpRequest.GetVendorSpecificInformation();
if (vendorSpecificInformation != null)
{
var strVendorInformation = Utility.ByteArrayToString(vendorSpecificInformation, true);
if (strVendorInformation.Length >= 6)
{
switch (strVendorInformation.Substring(0, 6))
{
case "010101":
SendAppleBootList(dhcpRequest);
break;
case "010102":
var interfaceHex =
Utility.ByteArrayToString(
string.IsNullOrEmpty(Settings.ServerIdentifierOverride)
? IPAddress.Parse(Settings.Nic).GetAddressBytes()
: IPAddress.Parse(Settings.ServerIdentifierOverride)
.GetAddressBytes(),
true);
if (strVendorInformation.Contains(interfaceHex))
{
SendSelectedNetBoot(dhcpRequest);
}
else
{
Trace.WriteLine("Different BSDP Server Targeted - Ignoring");
}
break;
default:
Trace.WriteLine(
"Not An Apple BSDP Request, Vendor Specific Information Mismatch - Ignoring");
break;
}
}
}
}
}
Trace.WriteLine("");
}