public static string GetNetworkAddressAsString(IPAddress address, IPAddress mask)
{
string netIP = ""; // Network address as string
int networkLength = 0;
if (null != mask)
{
for (int i = 0; i < 4; i++)
{
byte ba = address.GetAddressBytes()[i];
byte bm = mask.GetAddressBytes()[i];
netIP += ba & bm;
if (i < 3) netIP += ".";
networkLength += 8 - (int)System.Math.Truncate(System.Math.Log(256 - bm, 2));
}
netIP += "/" + networkLength;
}
else
{
netIP = address.ToString() + "/32";
}
return netIP;
}
public sockaddr_in6(IPAddress address)
{
if (address.AddressFamily == AddressFamily.InterNetworkV6)
{
this.sin6_addr = address.GetAddressBytes();
this.sin6_scope_id = (uint) address.ScopeId;
}
else
{
byte[] addressBytes = address.GetAddressBytes();
this.sin6_addr = new byte[0x10];
for (int i = 0; i < 10; i++)
{
this.sin6_addr[i] = 0;
}
this.sin6_addr[10] = 0xff;
this.sin6_addr[11] = 0xff;
for (int j = 12; j < 0x10; j++)
{
this.sin6_addr[j] = addressBytes[j - 12];
}
this.sin6_scope_id = 0;
}
this.sin6_family = 0x17;
this.sin6_port = 0;
this.sin6_flowinfo = 0;
}
public SocketAddress(IPAddress ipAddress)
: this(ipAddress.AddressFamily, ipAddress.AddressFamily == AddressFamily.InterNetwork ? 16 : 28)
{
this.m_buffer[2] = (byte)0;
this.m_buffer[3] = (byte)0;
if (ipAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
this.m_buffer[4] = (byte)0;
this.m_buffer[5] = (byte)0;
this.m_buffer[6] = (byte)0;
this.m_buffer[7] = (byte)0;
long scopeId = ipAddress.ScopeId;
this.m_buffer[24] = (byte)scopeId;
this.m_buffer[25] = (byte)(scopeId >> 8);
this.m_buffer[26] = (byte)(scopeId >> 16);
this.m_buffer[27] = (byte)(scopeId >> 24);
byte[] addressBytes = ipAddress.GetAddressBytes();
for (int index = 0; index < addressBytes.Length; ++index)
this.m_buffer[8 + index] = addressBytes[index];
}
else
{
System.Buffer.BlockCopy(ipAddress.GetAddressBytes(), 0, m_buffer, 4, 4);
}
}
public WhoisTask(IPAddress ip)
{
StringBuilder host = new StringBuilder();
switch (ip.AddressFamily)
{
// Turn the address into its in-addr.arpa form.
case System.Net.Sockets.AddressFamily.InterNetwork:
foreach (byte octet in ip.GetAddressBytes().Reverse())
{
host.Append(octet.ToString() + ".");
}
host.Append("in-addr.arpa");
break;
// Turn the address into its ip6.arpa form.
case System.Net.Sockets.AddressFamily.InterNetworkV6:
foreach (byte octet in ip.GetAddressBytes().Reverse())
{
string hex = string.Format("{0:x2}", octet);
host.Append(string.Format("{0}.{1}.", hex[1], hex[0]));
}
host.Append("ip6.arpa");
break;
}
Host = host.ToString();
}
public unsafe void BlockSource(IPAddress groupAdress, IPAddress sourceAdress, uint interfaceIndex = 0)
{
if (groupAdress.AddressFamily != sourceAdress.AddressFamily)
throw new ArgumentException("Address family must be the same");
var adress = groupAdress.GetAddressBytes();
var sourceadress = groupAdress.GetAddressBytes();
if (groupAdress.AddressFamily == AddressFamily.InterNetwork)
{
ip_mreq_source value = new ip_mreq_source();
value.imr_interface.s_b4 = (byte)interfaceIndex;
fixed (byte* a = adress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)adress.Length);
fixed (byte* a = sourceadress)
Unsafe.CopyBlock(value.imr_multiaddr.Address, a, (uint)sourceadress.Length);
if (SetSocketOption(IPPROTO_IP_SocketOptions.IP_BLOCK_SOURCE, (void*)&value, Marshal.SizeOf<ip_mreq_source>()) != 0)
WinSock.ThrowLastWSAError();
}
else if (groupAdress.AddressFamily == AddressFamily.InterNetworkV6)
{
//ipv6_mreq value = new ipv6_mreq();
//value.ipv6mr_interface = interfaceIndex;
//fixed (byte* a = adress)
// Unsafe.CopyBlock(value.ipv6mr_multiaddr.Address, a, (uint)adress.Length);
//if (SetSocketOption(IPPROTO_IPV6_SocketOptions., (void*)&value, Marshal.SizeOf<ipv6_mreq>()) != 0)
// WinSock.ThrowLastWSAError();
}
}
public static string FormatIp(IPAddress ipa)
{
string ipData = string.Empty;
if (ipa.AddressFamily == AddressFamily.InterNetwork)
{
ipData = "IPv4";
foreach (byte b in ipa.GetAddressBytes())
{
if (ipData[ipData.Length - 1] != ' ')
ipData += ".";
ipData += string.Format("{0}", b);
}
}
else
{
ipData = "IPv6";
byte[] bytes = ipa.GetAddressBytes();
for (int i = 0; i < bytes.Length; i = i + 2)
{
if (ipData[ipData.Length - 1] != ' ')
ipData += ":";
byte b = bytes[i];
ipData += string.Format("{0:X2}", b);
b = bytes[i + 1];
ipData += string.Format("{0:X2}", b);
}
}
return ipData;
}
public static IPAddress CloneAddress(IPAddress source, bool maskScopeId)
{
if (maskScopeId || V4Address(source))
{
return new IPAddress(source.GetAddressBytes());
}
return new IPAddress(source.GetAddressBytes(), source.ScopeId);
}
private static long IPToLong(IPAddress address)
{
MemoryStream ms = new MemoryStream();
ms.Write(address.GetAddressBytes(), 0, address.GetAddressBytes().Length);
while (ms.Length < 8)
ms.WriteByte(0);
return System.BitConverter.ToInt64(ms.ToArray(), 0);
}
public InternetAddress(IPAddress address)
{
if (address == null || address.GetAddressBytes().Length != 4)
{
_address = null;
}
_address = address.GetAddressBytes();
}
public NetAddr(Services services, IPAddress address, UInt16 port)
{
this.services = services;
this.address = address;
this.port = port;
if (address.GetAddressBytes().Length != 16)
this.address = new IPAddress((new Byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF })
.Concat(address.GetAddressBytes()).ToArray());
}
public IPNetwork(IPAddress prefix, int prefixLength)
{
Prefix = prefix;
PrefixLength = prefixLength;
PrefixBytes = Prefix.GetAddressBytes();
Mask = CreateMask();
}
public bool IsInRange(IPAddress address)
{
if (address.AddressFamily != addressFamily)
{
return false;
}
var addressBytes = address.GetAddressBytes();
bool lowerBoundary = true, upperBoundary = true;
for (var i = 0; i < lowerBytes.Length &&
(lowerBoundary || upperBoundary); i++)
{
if ((lowerBoundary && addressBytes[i] < lowerBytes[i]) || (upperBoundary && addressBytes[i] > upperBytes[i]))
{
return false;
}
lowerBoundary &= (addressBytes[i] == lowerBytes[i]);
upperBoundary &= (addressBytes[i] == upperBytes[i]);
}
return true;
}
public static bool IsInRange(this IPAddress address, IPAddress start, IPAddress end)
{
AddressFamily addressFamily = start.AddressFamily;
byte[] lowerBytes = start.GetAddressBytes();
byte[] upperBytes = end.GetAddressBytes();
if (address.AddressFamily != addressFamily)
{
return false;
}
byte[] addressBytes = address.GetAddressBytes();
bool lowerBoundary = true, upperBoundary = true;
for (int i = 0; i < lowerBytes.Length &&
(lowerBoundary || upperBoundary); i++)
{
if ((lowerBoundary && addressBytes[i] < lowerBytes[i]) ||
(upperBoundary && addressBytes[i] > upperBytes[i]))
{
return false;
}
lowerBoundary &= (addressBytes[i] == lowerBytes[i]);
upperBoundary &= (addressBytes[i] == upperBytes[i]);
}
return true;
}
public static IPAddress UintToIP(uint ipaddr, bool reverse = false, bool IsLittleEndian = true)
{
//fix endianess from network
if (IsLittleEndian)
{
ipaddr = (
(ipaddr << 24) & 0xFF000000) +
((ipaddr << 8) & 0x00FF0000) +
((ipaddr >> 8) & 0x0000FF00) +
((ipaddr >> 24) & 0x000000FF
);
}
else
{
ipaddr = (
((ipaddr >> 24) & 0x000000FF +
((ipaddr >> 8) & 0x0000FF00) +
((ipaddr << 8) & 0x00FF0000) +
(ipaddr << 24) & 0xFF000000)
);
}
var result = new System.Net.IPAddress(ipaddr);
if (reverse)
{
result = new IPAddress(result.GetAddressBytes().Reverse().ToArray());
}
return(result);
}
private int ProcessSHandshake(Protocol _p)
{
Handshake.SHandshake p = (Handshake.SHandshake)_p;
if (DHContext.TryGetValue(p.Sender.SessionId, out var dhRandom))
{
Array.Reverse(p.Argument.dh_data);
byte[] material = Handshake.Helper.computeDHKey(
Config.HandshakeOptions.DhGroup,
new BigInteger(p.Argument.dh_data),
dhRandom).ToByteArray();
Array.Reverse(material);
System.Net.IPAddress ipaddress =
((IPEndPoint)p.Sender.Socket.RemoteEndPoint).Address;
if (ipaddress.IsIPv4MappedToIPv6)
{
ipaddress = ipaddress.MapToIPv4();
}
byte[] key = ipaddress.GetAddressBytes();
logger.Debug("{0} remoteip={1}", p.Sender.SessionId, BitConverter.ToString(key));
int half = material.Length / 2;
byte[] hmacMd5 = Digest.HmacMd5(key, material, 0, half);
p.Sender.SetOutputSecurityCodec(hmacMd5, p.Argument.c2sneedcompress);
hmacMd5 = Digest.HmacMd5(key, material, half, material.Length - half);
p.Sender.SetInputSecurityCodec(hmacMd5, p.Argument.s2cneedcompress);
DHContext.TryRemove(p.Sender.SessionId, out var _);
new Handshake.CHandshakeDone().Send(p.Sender);
OnHandshakeDone(p.Sender);
return(0);
}
throw new Exception("handshake lost context.");
}
public static uint ReToNumIP(string ip)
{
if (ip == null || ip.Length < 1)
{
return(0);
}
uint IP = 0;
byte[] addbyte = new byte[128];
try
{
System.Net.IPAddress ipaddr = System.Net.IPAddress.Parse(ip);
addbyte = ipaddr.GetAddressBytes();
byte[] IPByte = new byte[4];
IPByte[0] = addbyte[3];
IPByte[1] = addbyte[2];
IPByte[2] = addbyte[1];
IPByte[3] = addbyte[0];
IP = System.BitConverter.ToUInt32(IPByte, 0);
}
catch (System.Exception e1)
{
Tools.WriteLog("ICS AdminPortal", e1.ToString(), System.Diagnostics.EventLogEntryType.Error);
return(0);
}
return(IP);
}
public void Initial(System.Net.IPAddress startIP, System.Net.IPAddress endIP)
{
if (Helper.Compare(startIP, endIP) == 1)
{
var tempIp = endIP;
endIP = startIP;
startIP = tempIp;
}
ltbxIPAddressesRange.DataSource = null;
var IPAddressesRange = new List <System.Net.IPAddress>();
var startIPBytesArray = startIP.GetAddressBytes();
var endIPBytesArray = endIP.GetAddressBytes();
Array.Reverse(startIPBytesArray);
Array.Reverse(endIPBytesArray);
_startIP = BitConverter.ToUInt32(startIPBytesArray, 0);
_endIP = BitConverter.ToUInt32(endIPBytesArray, 0);
double pagesCount = ((double)_endIP + 1) / (double)_recordsPerPage;
_totalPages = (int)(Math.Ceiling(pagesCount));
_currentPage = _totalPages > 0 ? 1 : 0;
if (_totalPages > 1)
{
EnableNavigation(true);
}
navigation.CurrentPage = _currentPage;
navigation.TotalPages = _totalPages;
}
private List <string> get_ip_list(string start_ip, string end_ip)
{
System.Net.IPAddress startIP = System.Net.IPAddress.Parse(start_ip);
System.Net.IPAddress lastIP = System.Net.IPAddress.Parse(end_ip);
byte [] beginIP = startIP.GetAddressBytes();
byte [] endIP = lastIP.GetAddressBytes();
int capacity = 1;
for (int i = 0; i < 4; i++)
{
capacity *= endIP[i] - beginIP[i] + 1;
}
List <string> ips = new List <string>(capacity);
for (int i0 = beginIP[0]; i0 <= endIP[0]; i0++)
{
for (int i1 = beginIP[1]; i1 <= endIP[1]; i1++)
{
for (int i2 = beginIP[2]; i2 <= endIP[2]; i2++)
{
for (int i3 = beginIP[3]; i3 <= endIP[3]; i3++)
{
ips.Add(new IPAddress(new byte[] { (byte)i0, (byte)i1, (byte)i2, (byte)i3 }).ToString());
}
}
}
}
return(ips);
}
public static OSD FromIP(IPAddress address)
{
if (address != null && address != IPAddress.Any)
return OSD.FromBinary(address.GetAddressBytes());
else
return new OSD();
}
// get IPv6 pseudo-header (adapted from: http://www.winsocketdotnetworkprogramming.com/clientserversocketnetworkcommunication8f_3.html)
public static byte[] GetPseudoHeader(IPAddress sourceIP, IPAddress destinationIP, int icmpv6Length, int nextHeader)
{
byte[] pseudoHeader, byteValue;
int offset = 0, payLoadLength;
// now build the pseudo header
pseudoHeader = new byte[40];
byteValue = sourceIP.GetAddressBytes();
Array.Copy(byteValue, 0, pseudoHeader, offset, byteValue.Length);
offset += byteValue.Length;
byteValue = destinationIP.GetAddressBytes();
Array.Copy(byteValue, 0, pseudoHeader, offset, byteValue.Length);
offset += byteValue.Length;
// Packet total length
payLoadLength = IPAddress.HostToNetworkOrder(4 + icmpv6Length);
byteValue = BitConverter.GetBytes(payLoadLength);
Array.Copy(byteValue, 0, pseudoHeader, offset, byteValue.Length);
offset += byteValue.Length;
// 3 bytes of zero padding
pseudoHeader[offset++] = (byte)0;
pseudoHeader[offset++] = (byte)0;
pseudoHeader[offset++] = (byte)0;
pseudoHeader[offset++] = (byte)nextHeader;
return pseudoHeader;
}
public static IPAddress GetMatchingLocalIP(IPAddress clientAddr)
{
if (clientAddr.Equals(IPAddress.Any) ||
clientAddr.Equals(IPAddress.Loopback))
{
return IPAddress.Loopback;
}
var clientBytes = clientAddr.GetAddressBytes();
// find an address that matches the most significant n-1 bytes of the address of the connecting client
foreach (var addr in CachedHostEntry.AddressList)
{
var bytes = addr.GetAddressBytes();
if (bytes.Length != clientBytes.Length) continue;
var match = true;
for (var i = bytes.Length-2; i >= 0; i--)
{
if (bytes[i] != clientBytes[i])
{
match = false;
break;
}
}
if (match) return addr;
}
return null;
}
public static unsafe IPHostEntry GetHostByAddr(IPAddress addr)
{
// TODO #2891: Optimize this (or decide if this legacy code can be removed):
byte[] addressBytes = addr.GetAddressBytes();
var address = new Interop.libc.in_addr { s_addr = unchecked((uint)BitConverter.ToInt32(addressBytes, 0)) };
int bufferSize = 512;
byte* stackBuffer = stackalloc byte[bufferSize];
var hostent = default(Interop.libc.hostent);
var result = (Interop.libc.hostent*)null;
if (TryGetHostByAddr(address, stackBuffer, bufferSize, &hostent, &result))
{
return CreateHostEntry(result);
}
for (; ;)
{
bufferSize *= 2;
fixed (byte* heapBuffer = new byte[bufferSize])
{
if (TryGetHostByAddr(address, heapBuffer, bufferSize, &hostent, &result))
{
return CreateHostEntry(result);
}
}
}
}
public void Initialize(Nic targetNic, IPAddress from = null, IPAddress to = null)
{
if (from == null)
from = targetNic.Ip.V4.PrimaryUnicast.Network.FirstAddress;
if (to == null)
to = targetNic.Ip.V4.PrimaryUnicast.Network.LastAddress;
uint firstUint = BitConverter.ToUInt32(from.GetAddressBytes().Reverse().ToArray(), 0);
uint lastUint = BitConverter.ToUInt32(to.GetAddressBytes().Reverse().ToArray(), 0);
//for (uint i = firstUint; i <= lastUint; i++)
for (uint i = firstUint; i <= lastUint; i++)
{
var ipAddress = new IPAddress(BitConverter.GetBytes(i).Reverse().ToArray());
var hostScan = new HostScan(ipAddress, targetNic.Ip.V4.PrimaryUnicast.Address);
hostScan.Options = Options.HostScanOptions;
hostScan.Options.Dns.DnsServer = targetNic.Raw.IpProperties.DnsAddresses.FirstOrDefault(x => x.AddressFamily == AddressFamily.InterNetwork);
hostScan.State.Online += HostOnline;
hostScan.State.Completed += HostScanCompleted;
_scans.Add(hostScan);
}
Results.SetTotalScans((ushort) Scans.Count);
Results.SetLocalNic(targetNic);
}
public void Initialize(Nic targetNic, IPAddress from = null, IPAddress to = null)
{
if (from == null)
from = targetNic.Ip.V4.PrimaryUnicast.Network.FirstAddress;
if (to == null)
to = targetNic.Ip.V4.PrimaryUnicast.Network.LastAddress;
uint firstUint = BitConverter.ToUInt32(from.GetAddressBytes().Reverse().ToArray(), 0);
uint lastUint = BitConverter.ToUInt32(to.GetAddressBytes().Reverse().ToArray(), 0);
//for (uint i = firstUint; i <= lastUint; i++)
for (uint i = firstUint; i <= lastUint; i++)
{
var ipAddress = new IPAddress(BitConverter.GetBytes(i).Reverse().ToArray());
var observer = new HostObserver(ipAddress, targetNic.Ip.V4.PrimaryUnicast.Address);
observer.Options = Options.HostObserver;
//hostChangeDetector.Options.Dns.DnsServer = targetNic.Raw.IpProperties.DnsAddresses.FirstOrDefault(x => x.AddressFamily == AddressFamily.InterNetwork);
observer.State.ObserverSucceeded += ObserverSucceeded;
observer.State.Activated += ObserverActivated;
observer.State.Deactivated += ObserverDeactivated;
_detectors.Add(observer);
}
Results.SetLocalNic(targetNic);
}
public POIBroadcast()
{
//Find current broadcast address
broadCastAddr = IPAddress.Parse("192.168.1.255");
IPAddress[] localAddresses = Dns.GetHostAddresses(Dns.GetHostName());
foreach (IPAddress ip in localAddresses)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
//Find local address
localAddr = ip;
Console.WriteLine(ip.ToString());
//Find broadcast address
byte[] bcBytes = IPAddress.Broadcast.GetAddressBytes();
Array.Copy(localAddr.GetAddressBytes(), bcBytes, 3);
broadCastAddr = new IPAddress(bcBytes);
Console.WriteLine(broadCastAddr.ToString());
}
}
//Initialize a broadcast channel using UDP
broadCastChannel = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
broadCastChannel.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
}
public void ApplyServerHostnamePatch(IPAddress ipAddress)
{
if (ipAddress == null)
throw new ArgumentNullException("ipAddress");
ApplyServerHostnamePatch(ipAddress.GetAddressBytes());
}
public bool IsInRange(IPAddress address)
{
// Some people just have to be like that...
if (address.AddressFamily != Family || address.GetLength() != LowerBoundary.Length)
return false;
var bytes = address.GetAddressBytes();
var lowerBoundary = true;
var upperBoundary = true;
for (var i = 0; i < LowerBoundary.Length && (lowerBoundary || upperBoundary); i++)
{
var currentByte = bytes[i];
var lowerByte = LowerBoundary[i];
var upperByte = UpperBoundary[i];
if ((lowerBoundary && currentByte < lowerByte) || (upperBoundary && currentByte > upperByte))
return false;
lowerBoundary &= currentByte == lowerByte;
upperBoundary &= currentByte == upperByte;
}
return true;
}
public static IPAddress GetNetworkAddress(this IPAddress address, IPAddress subnetMask)
{
var ipAdressBytes = address.GetAddressBytes();
var subnetMaskBytes = subnetMask.GetAddressBytes();
return new IPAddress(GetNetworkAddressBytes(ipAdressBytes, subnetMaskBytes));
}
public static bool CompareAddresses(Net.IPAddress a, Net.IPAddress b)
{
bool res = true;
if ((a == null) && (b == null))
{
return(true);
}
if ((a == null) || (b == null))
{
return(false);
}
if (a.AddressFamily != b.AddressFamily)
{
return(false);
}
if (a.AddressFamily == Net.Sockets.AddressFamily.InterNetworkV6)
{
//IPAddress.Equals works wrong for ipv6 if address has different scope id
byte[] bytesA = a.GetAddressBytes();
byte[] bytesB = b.GetAddressBytes();
for (int i = 0; i < bytesA.Length; i++)
{
if (bytesA[i] != bytesB[i])
{
return(false);
}
}
}
else
{
res = IPAddress.Equals(a, b);
}
return(res);
}
public static IPAddress GetLocalAddressFromRadioAddress(IPAddress radioAddress, int iIgnoreBytes)
{
NetworkInterface[] intfList = GetAvailableInterfaces();
byte[] ipBytes = radioAddress.GetAddressBytes();
if (ipBytes == null)
return null;
if (intfList == null || intfList.Length <= 0)
return null;
foreach (NetworkInterface ni in intfList)
{
IPInterfaceProperties ipProps = ni.GetIPProperties();
foreach (UnicastIPAddressInformation uip in ipProps.UnicastAddresses)
{
byte[] uipByes = uip.Address.GetAddressBytes();
if (uipByes == null)
continue;
if (uipByes.Length == ipBytes.Length)
{
bool b = true;
for (int i = 0; i < uipByes.Length - iIgnoreBytes; i++)
{
b &= (uipByes[i] == ipBytes[i]);
}
if (b)
{
return uip.Address;
}
}
}
}
return null;
}
private static IPAddress ParseIPv6AddressScope(Uri uri, IPAddress ipWithoutScope)
{
// Sometimes this can be escaped, sometimes not
var idnHost = WebUtility.UrlDecode(uri.DnsSafeHost); // IdnHost is preferred in .NET 4.6
var hostWithScopeParts = idnHost.Split(new[] { '%' }, 2);
// Did they provide a scope?
IPAddress ipWithScope;
if (hostWithScopeParts.Length > 1)
{
var scopeName = hostWithScopeParts[1];
// Just in case Syncthing ever starts returning proper scope IDs...
long scopeId;
if (!Int64.TryParse(scopeName, out scopeId))
{
var scopeLevel = ipWithoutScope.IsIPv6SiteLocal ? ScopeLevel.Site : ScopeLevel.Interface;
// I've seen Go produce ID and Name
var network = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(x => x.Id == scopeName || x.Name == scopeName);
if (network == null)
throw new FormatException($"Unable to find an interface with name {scopeName}");
scopeId = network.GetIPProperties().GetIPv6Properties().GetScopeId(scopeLevel);
}
ipWithScope = new IPAddress(ipWithoutScope.GetAddressBytes(), scopeId);
}
else
{
ipWithScope = ipWithoutScope;
}
return ipWithScope;
}
public static IObservable<UdpReceiveResult> CreateListener(IPAddress remoteAddress, int port)
{
if (remoteAddress == null) throw new ArgumentNullException(nameof(remoteAddress));
if (port < 0 || port > 65535) throw new ArgumentOutOfRangeException(nameof(port), port, null);
IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());
var remoteIPBytes = remoteAddress.GetAddressBytes();
var localAddress =
host.AddressList.FirstOrDefault(ip =>
ip.AddressFamily == remoteAddress.AddressFamily
&& ip.GetAddressBytes().Take(3).SequenceEqual(remoteIPBytes.Take(3)));
if (localAddress == null)
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resources.ExceptionMessages.Net_NoInterfaceInSameNetwork, remoteAddress, port));
var localEndPoint = new IPEndPoint(localAddress, port);
var remoteEndPoint = new IPEndPoint(remoteAddress, port);
return Observable.Using(
() =>
{
var client = new UdpClient { ExclusiveAddressUse = false };
client.Client.Bind(localEndPoint);
client.Connect(remoteEndPoint.Address, 0);
return client;
},
client => Observable.While(() => client.Client.Connected, Observable.FromAsync(client.ReceiveAsync)));
}
public long ip2long(String ip)
{
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse(ip);
byte[] bytes = ipaddress.GetAddressBytes();
Array.Reverse(bytes);
return(BitConverter.ToUInt32(bytes, 0));
}
public static bool NetAddressIncludesIPAddress(string netaddress, IPAddress target)
{
int slash = netaddress.IndexOf('/');
int bits = Int32.Parse(netaddress.Substring(slash + 1));
IPAddress net = IPAddress.Parse(netaddress.Substring(0, slash));
if (net.AddressFamily != target.AddressFamily)
return false;
byte[] bnet = net.GetAddressBytes();
byte[] btarget = target.GetAddressBytes();
Debug.Assert(bnet.Length == btarget.Length);
for (int i = 0; i < bnet.Length; i++) {
byte b1 = bnet[i];
byte b2 = btarget[i];
if (bits <= 0)
return true;
else if (bits >= 8) {
if (b1 != b2)
return false;
}
else {
b1 >>= (8 - bits);
b2 >>= (8 - bits);
if (b1 != b2)
return false;
}
bits -= 8;
}
return true;
}
private static IResourceRecord Create(Domain domain, IPAddress ip, TimeSpan ttl)
{
byte[] data = ip.GetAddressBytes();
RecordType type = data.Length == 4 ? RecordType.A : RecordType.AAAA;
return new ResourceRecord(domain, data, type, RecordClass.IN, ttl);
}
public void UpdateAccountValues(UInt64 accId, UInt32 oneTimeKey, UInt32 sessId1, UInt32 sessId2, IPAddress ipa)
{
try
{
var off = ipa.AddressFamily == AddressFamily.InterNetworkV6 ? 12 : 0;
var lastIp = String.Format("{0}.{1}.{2}.{3}", ipa.GetAddressBytes()[off + 0], ipa.GetAddressBytes()[off + 1], ipa.GetAddressBytes()[off + 2], ipa.GetAddressBytes()[off + 3]);
lock (DataAccess.DatabaseAccess)
using (var comm = DataAccess.DatabaseAccess.CreateCommand(String.Format("UPDATE `account` SET `OneTimeKey` = {0}, `SessionId1` = {1}, `SessionId2` = {2}, `LastIP` = '{3}' WHERE `Id` = {4}", oneTimeKey, sessId1, sessId2, lastIp, accId)))
comm.ExecuteNonQuery();
}
catch (Exception e)
{
Logger.WriteLog("Exception in UpdateAccountValues! Exception: {0}", LogType.Error, e);
}
}
public int addIPRangeToPool(IPAddress start, IPAddress end, IPAddress netmask)
{
byte[] data;
data = start.GetAddressBytes();
UInt32 range_start = EndianBitConverter.Big.ToUInt32( data, 0 );
data = end.GetAddressBytes();
UInt32 range_stop = EndianBitConverter.Big.ToUInt32(data, 0);
int count = 0;
if (range_start <= range_stop)
{
IPAddress ip;
lock (ip_pool)
{
for (UInt32 i = range_start; i <= range_stop; i++)
{
ip = new IPAddress(EndianBitConverter.Big.GetBytes(i));
if (!hasNattedIP(ip))
{
ip_pool.Add(new xbs_nat_entry(null, null, ip, netmask));
count++;
}
}
}
xbs_messages.addDebugMessage("% NAT IP pool filled with " + count + " ip addresses. Total count of IPs in pool: " + ip_pool.Count, xbs_message_sender.NAT);
}
return count;
}
/// <summary>
/// Checks if the given IP falls into the specified range
/// </summary>
/// <param name="target">The IP to check</param>
/// <returns>True if it is inside the range, otherwise false</returns>
public override bool Matches(System.Net.IPAddress target)
{
if (target == null)
{
throw new ArgumentNullException("target");
}
byte[] addressBytes = target.GetAddressBytes();
bool lowerBoundary = true, upperBoundary = true;
for (int i = 0; i < StartAddress.GetAddressBytes().Length&&
(lowerBoundary || upperBoundary); i++)
{
if ((lowerBoundary && addressBytes[i] < StartAddress.GetAddressBytes()[i]) ||
(upperBoundary && addressBytes[i] > EndAddress.GetAddressBytes()[i]))
{
return(false);
}
lowerBoundary &= (addressBytes[i] == StartAddress.GetAddressBytes()[i]);
upperBoundary &= (addressBytes[i] == EndAddress.GetAddressBytes()[i]);
}
return(true);
}
public static string GetMacAddressByIP(System.Net.IPAddress ipAddress)
{
byte[] macBytes = new byte[6];
int length = 6;
SendARP(BitConverter.ToInt32(ipAddress.GetAddressBytes(), 0), 0, macBytes, ref length);
return(BitConverter.ToString(macBytes, 0, 6));
}
private uint ReturnFirtsOctet(string ipAddress)
{
System.Net.IPAddress iPAddress = System.Net.IPAddress.Parse(ipAddress);
byte[] byteIP = iPAddress.GetAddressBytes();
uint ipInUint = (uint)byteIP[0];
return(ipInUint);
}
public override void Serialize(ref SerializationWriter mySerializationWriter)
{
mySerializationWriter.CheckNull("mySerializationWriter");
if (_IPAddress != null)
{
mySerializationWriter.WriteBytesDirect(_IPAddress.GetAddressBytes());
}
}
/// <summary>
/// Encodes the ip address.
/// </summary>
/// <param name="bytes">The bytes.</param>
/// <param name="offset">The offset.</param>
/// <param name="ipAddress">The ip address.</param>
/// <returns>offset as int</returns>
private static int EncodeIPAddress(this byte[] bytes, int offset, System.Net.IPAddress ipAddress)
{
offset = bytes.EncodeClassConstructType(offset, Asn1Class.Application, ConstructType.Primitive, (byte)Asn1SnmpTag.IpAddress);
offset = bytes.EncodeLength(offset, 4);
byte[] bytesEncoded = ipAddress.GetAddressBytes();
Array.Copy(bytesEncoded, 0, bytes, offset, bytesEncoded.Length);
return(offset + 4);
}
private uint GetIP(string strIp)
{
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse(strIp);
uint lIp = BitConverter.ToUInt32(ipaddress.GetAddressBytes(), 0);
//調整IP地址的字節序
lIp = ((lIp & 0xFF000000) >> 24) + ((lIp & 0x00FF0000) >> 8) + ((lIp & 0x0000FF00) << 8) + ((lIp & 0x000000FF) << 24);
return(lIp);
}
public static IPAddressMessage Convert(this System.Net.IPAddress address)
{
switch (address.AddressFamily)
{
case AddressFamily.InterNetwork:
return(new IPAddressMessage {
IpV4 = address.GetAddressBytes().ToUInt32()
});
case AddressFamily.InterNetworkV6:
return(new IPAddressMessage {
IpV6 = ByteString.CopyFrom(address.GetAddressBytes())
});
default:
return(null);
}
}
public static Network.IPAddress ToArke(System.Net.IPAddress ip)
{
if (ip == null)
{
throw new ArgumentNullException(nameof(ip));
}
return(new Network.IPAddress(ip.GetAddressBytes()));
}
public static System.Net.IPAddress Not(System.Net.IPAddress mask)
{
byte[] mm = mask.GetAddressBytes();
for (int i = 0; i < mm.Length; i++)
{
mm[i] = (byte)(~mm[i]);
}
return(new System.Net.IPAddress(mm));
}
static public System.Net.IPAddress Minus(System.Net.IPAddress x, byte y)
{
byte[] New = Minus(x.GetAddressBytes(), y);
string ni = New.Length == 4 ? string.Format("{0}.{1}.{2}.{3}", New[0], New[1], New[2], New[3])
: string.Format("{0:x2}{1:x2}:{2:x2}{3:x2}:{4:x2}{5:x2}:{6:x2}{7:x2}:{8:x2}{9:x2}:{10:x2}{11:x2}:{12:x2}{13:x2}:{14:x2}{15:x2}",
New[0], New[1], New[2], New[3], New[4], New[5], New[6], New[7],
New[8], New[9], New[10], New[11], New[12], New[13], New[14], New[15]);
return(System.Net.IPAddress.Parse(ni));
}
private long IPAddressToLong(string IPAddr)
{
System.Net.IPAddress oIP = System.Net.IPAddress.Parse(IPAddr);
byte[] byteIP = oIP.GetAddressBytes();
long ip = (long)byteIP[3] << 24;
ip += (long)byteIP[2] << 16;
ip += (long)byteIP[1] << 8;
ip += (long)byteIP[0];
return(ip);
}
public static long IPtoLong(System.Net.IPAddress theIP) // convert IP to number
{
byte[] IPb = theIP.GetAddressBytes(); // get the octets
long addr = 0; // accumulator for address
for (int x = 0; x <= 3; x++)
{
addr |= (System.Convert.ToInt64(IPb[x]) << (3 - x) * 8);
}
return(addr);
}
static public int CompareFor(System.Net.IPAddress x, System.Net.IPAddress y)
{
if ((x.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork &&
y.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) ||
(x.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6 &&
y.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6))
{
return(IPSeg.CompareFor(x.GetAddressBytes(), y.GetAddressBytes()));
}
throw new Exception("IP地址类型必须是IPv4或者IPv6才能进行比较");
}
public static int IpToInt(string address)
{
System.Net.IPAddress ip = null;
if (System.Net.IPAddress.TryParse(address.Trim(), out ip))
{
return(BitConverter.ToInt32(ip.GetAddressBytes(), 0));
}
else
{
return(0);
}
}
/// <summary>
/// Converts IP address to number.
/// </summary>
/// <param name="IPAddr">IP address.</param>
/// <returns>IP address in number format.</returns>
private static uint IPAddressToLongBackwards(string IPAddr)
{
System.Net.IPAddress oIP = System.Net.IPAddress.Parse(IPAddr);
byte[] byteIP = oIP.GetAddressBytes();
uint ip = (uint)byteIP[0] << 24;
ip += (uint)byteIP[1] << 16;
ip += (uint)byteIP[2] << 8;
ip += (uint)byteIP[3];
return(ip);
}
/// <summary>
/// Converts a string representation of an IP address to a uint. This
/// encoding is proper and can be used with other networking functions such
/// as the System.Net.IPAddress class.
/// </summary>
/// <param name="IPAddress">The Ip address to convert.</param>
/// <returns>Returns a uint representation of the IP address.</returns>
static public uint IPAddressToLong(string IPAddress)
{
System.Net.IPAddress oIP = System.Net.IPAddress.Parse(IPAddress);
byte[] byteIP = oIP.GetAddressBytes();
uint ip = (uint)byteIP[3] << 24;
ip += (uint)byteIP[2] << 16;
ip += (uint)byteIP[1] << 8;
ip += (uint)byteIP[0];
return(ip);
}
public static bool InSubnet(System.Net.IPAddress IPAddr, string Subnet)
{
bool result = false;
int cidr = Int32.Parse(Subnet.Split('/')[1]);
uint mask = cidr == 0 ? 0 : 0xffffffff << (32 - cidr);
byte[] maskBytes = BitConverter.GetBytes(mask);
Array.Reverse(maskBytes);
byte[] addressBytes = IPAddr.GetAddressBytes();
IPAddress subnet = IPAddress.Parse(Subnet.Split('/')[0]);
byte[] maskedAddressBytes = new byte[addressBytes.Length];
for (int i = 0; i < maskedAddressBytes.Length; i++)
{
maskedAddressBytes[i] = (byte)(IPAddr.GetAddressBytes()[i] & maskBytes[i]);
}
IPAddress maskedAddress = new IPAddress(maskedAddressBytes);
result = (subnet.Equals(maskedAddress));
return(result);
}
private int ProcessCHandshake(Protocol _p)
{
Handshake.CHandshake p = (Handshake.CHandshake)_p;
int group = p.Argument.dh_group;
if (false == Config.HandshakeOptions.DhGroups.Contains(group))
{
p.Sender.Close(new Exception("dhGroup Not Supported"));
return(0);
}
Array.Reverse(p.Argument.dh_data);
BigInteger data = new BigInteger(p.Argument.dh_data);
BigInteger rand = Handshake.Helper.makeDHRandom();
byte[] material = Handshake.Helper.computeDHKey(group, data, rand).ToByteArray();
Array.Reverse(material);
System.Net.IPAddress ipaddress =
((IPEndPoint)p.Sender.Socket.LocalEndPoint).Address;
//logger.Debug(ipaddress);
if (ipaddress.IsIPv4MappedToIPv6)
{
ipaddress = ipaddress.MapToIPv4();
}
byte[] key = Config.HandshakeOptions.SecureIp != null
? Config.HandshakeOptions.SecureIp
: ipaddress.GetAddressBytes();
logger.Debug("{0} localip={1}", p.Sender.SessionId, BitConverter.ToString(key));
int half = material.Length / 2;
byte[] hmacMd5 = Digest.HmacMd5(key, material, 0, half);
p.Sender.SetInputSecurityCodec(hmacMd5, Config.HandshakeOptions.C2sNeedCompress);
byte[] response = Handshake.Helper.generateDHResponse(group, rand).ToByteArray();
Array.Reverse(response);
new Handshake.SHandshake(response,
Config.HandshakeOptions.S2cNeedCompress,
Config.HandshakeOptions.C2sNeedCompress)
.Send(p.Sender);
hmacMd5 = Digest.HmacMd5(key, material, half, material.Length - half);
p.Sender.SetOutputSecurityCodec(hmacMd5, Config.HandshakeOptions.S2cNeedCompress);
// 为了防止服务器在Handshake以后马上发送数据，
// 导致未加密数据和加密数据一起到达Client，这种情况很难处理。
// 这个本质上是协议相关的问题：就是前面一个协议的处理结果影响后面数据处理。
// 所以增加CHandshakeDone协议，在Client进入加密以后发送给Server。
// OnHandshakeDone(p.Sender);
return(0);
}
private static System.Net.IPAddress BitOperate(System.Net.IPAddress x, System.Net.IPAddress mask, Operate op)
{
byte[] xx = x.GetAddressBytes();
byte[] mm = mask.GetAddressBytes();
if (xx.Length != mm.Length)
{
throw new ApplicationException("IP地址版本不一致，不能执行“或”操作");
}
int i = 0;
for (i = 0; i < xx.Length; i++)
{
xx[i] = op(xx[i], mm[i]);
}
return(new System.Net.IPAddress(xx));
}
/// <summary>
/// Returns true if the IPAddress supplied is on the same subnet as this host
/// </summary>
public static bool IsLocal(NetAddress remote)
{
var local = GetMyAddress(out var mask);
if (mask == null)
{
return(false);
}
uint maskBits = BitConverter.ToUInt32(mask.GetAddressBytes(), 0);
uint remoteBits = BitConverter.ToUInt32(remote.GetAddressBytes(), 0);
uint localBits = BitConverter.ToUInt32(local.GetAddressBytes(), 0);
// compare network portions
return((remoteBits & maskBits) == (localBits & maskBits));
}
public static System.Net.IPAddress GetNetworkAddress(System.Net.IPAddress address, System.Net.IPAddress subnetMask)
{
byte[] ipAdressBytes = address.GetAddressBytes();
byte[] subnetMaskBytes = subnetMask.GetAddressBytes();
if (ipAdressBytes.Length != subnetMaskBytes.Length)
{
throw new ArgumentException("Lengths of IP address and subnet mask do not match.");
}
byte[] broadcastAddress = new byte[ipAdressBytes.Length];
for (int i = 0; i < broadcastAddress.Length; i++)
{
broadcastAddress[i] = (byte)(ipAdressBytes[i] & (subnetMaskBytes[i]));
}
return(new System.Net.IPAddress(broadcastAddress));
}
//Возвращает число единичных бит в маске
private int mask_to_short_form(System.Net.IPAddress mask)
{
byte[] bytes = mask.GetAddressBytes();
int number_of_bits = 0;
foreach (var _octet in bytes)
{
byte octet = _octet;
while (octet != 0)
{
number_of_bits += octet & 1;
octet >>= 1;
}
}
return(number_of_bits);
}
private static string GetMacString(System.Net.IPAddress ip)
{
if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
byte[] mac = new byte[6];
int macLen = mac.Length;
int dest = BitConverter.ToInt32(ip.GetAddressBytes(), 0);
int res = NativeMethods.SendARP(dest, 0, mac, ref macLen);
if ((res == 0) && ((mac[0] != 0) || (mac[1] != 0) || (mac[2] != 0) || (mac[3] != 0) || (mac[4] != 0) || (mac[5] != 0)))
{
return((mac[0].ToString("x2") + ":" + mac[1].ToString("x2") + ":" + mac[2].ToString("x2") + ":" + mac[3].ToString("x2") + ":" + mac[4].ToString("x2") + ":" + mac[5].ToString("x2")).ToUpper());
}
}
return(null);
}
