private IList <IPAddress> GetIpAddresses(Sockaddr ipSockaddr, Sockaddr maskSockaddr)
{
var ipAddresses = new List <IPAddress>();
var ipAddressBytes = ipSockaddr.ipAddress.GetAddressBytes();
var networkMaskBytes = maskSockaddr.ipAddress.GetAddressBytes();
var subnetAddressBytes = new byte[ipAddressBytes.Length];
var broadcastAddressBytes = new byte[ipAddressBytes.Length];
for (int i = 0; i < ipAddressBytes.Length; i++)
{
subnetAddressBytes[i] = (byte)(ipAddressBytes[i] & networkMaskBytes[i]);
}
for (int i = 0; i < ipAddressBytes.Length; i++)
{
broadcastAddressBytes[i] = (byte)(subnetAddressBytes[i] | (networkMaskBytes[i] ^ 0xFF));
}
var subnetAddress = new IPAddress(subnetAddressBytes);
var broadcastAddress = new IPAddress(broadcastAddressBytes);
var currentIpAddress = new IPAddress(subnetAddressBytes);
do
{
currentIpAddress = this.GetNextIpAddress(currentIpAddress, 1);
ipAddresses.Add(currentIpAddress);
} while (currentIpAddress.ToString() != broadcastAddress.ToString());
return(ipAddresses);
}
public void SockaddrInTest()
{
var address1 = new SockaddrIn {
sin_family = UnixAddressFamily.AF_INET,
sin_port = Syscall.htons(5678),
sin_addr = NativeConvert.ToInAddr(IPAddress.Loopback),
};
var storage = address1.ToSockaddrStorage();
var address2 = SockaddrIn.FromSockaddrStorage(storage);
Assert.AreEqual(address1, address2);
var sockaddr = Sockaddr.FromSockaddrStorage(storage);
Assert.AreEqual(sockaddr.sa_family, address1.sa_family);
var storage2 = storage.ToSockaddrStorage();
Assert.AreEqual(storage, storage2);
var storage3 = new SockaddrStorage(123);
storage2.CopyTo(storage3);
Assert.AreEqual(storage, storage3);
Assert.AreEqual("{sin_family=AF_INET, sin_port=htons(5678), sin_addr=127.0.0.1}", address1.ToString());
}
public void SockaddrIn6Test()
{
if (!Socket.OSSupportsIPv6)
{
Assert.Ignore("OS does not support IPv6.");
}
var address1 = new SockaddrIn6 {
sin6_family = UnixAddressFamily.AF_INET6,
sin6_port = Syscall.htons(1234),
sin6_flowinfo = 2,
sin6_addr = NativeConvert.ToIn6Addr(IPAddress.IPv6Loopback),
sin6_scope_id = 3
};
var storage = address1.ToSockaddrStorage();
var address2 = SockaddrIn6.FromSockaddrStorage(storage);
Assert.AreEqual(address1, address2);
var sockaddr = Sockaddr.FromSockaddrStorage(storage);
Assert.AreEqual(sockaddr.sa_family, address1.sa_family);
Assert.AreEqual("{sin6_family=AF_INET6, sin6_port=htons(1234), sin6_flowinfo=2, sin6_addr=::1, sin6_scope_id=3}", address1.ToString());
}
public void IPv6()
{
if (!Socket.OSSupportsIPv6)
{
Assert.Ignore("OS does not support IPv6.");
}
var address = new SockaddrIn6 {
sin6_family = UnixAddressFamily.AF_INET6,
sin6_port = Syscall.htons(0),
sin6_addr = NativeConvert.ToIn6Addr(IPAddress.IPv6Loopback),
};
WithSockets(UnixAddressFamily.AF_INET6, UnixSocketType.SOCK_STREAM, 0, (so1, so2) => {
if (Syscall.bind(so1, address) < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
var address1Stor = new SockaddrStorage();
if (Syscall.getsockname(so1, address1Stor) < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
var address1 = new SockaddrIn6();
address1Stor.CopyTo(address1);
// Check getsockname(socket, null)
if (Syscall.getsockname(so1, null) < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
var address2 = new SockaddrIn6();
if (Syscall.getsockname(so1, address2) < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
Assert.AreEqual(address1, address2);
Assert.IsTrue(Syscall.ntohs(address1.sin6_port) != 0);
address1.sin6_port = 0;
Assert.AreEqual(address, address1);
var address3 = new Sockaddr();
if (Syscall.getsockname(so1, address3) < 0)
{
UnixMarshal.ThrowExceptionForLastError();
}
Assert.AreEqual(address.sa_family, address3.sa_family);
// Try to store a sockaddr_in6 into a Sockaddr. Should fail because sockaddr_in6 should be larger than sockaddr_in
var address4 = new SockaddrIn();
if (Syscall.getsockname(so1, address4) == 0)
{
Assert.Fail("getsockname() should have failed");
}
Assert.AreEqual(Errno.ENOBUFS, Stdlib.GetLastError());
});
}
public static bool TryDeleteDomainSocket(Sockaddr servaddr, string path)
{
// Make sure we only proceed with a potential domain socket entry
if (!string.IsNullOrWhiteSpace(path) && File.Exists(path) && new FileInfo(path).Length == 0)
{
// Ensure that no other process is using the socket
var csock = Syscall.socket(UnixAddressFamily.AF_UNIX, UnixSocketType.SOCK_STREAM, 0);
var ret = Syscall.connect(csock, servaddr);
Syscall.close(csock);
// If we cannot connect, assume it is broken
if (ret != 0)
{
// Try to remove the file
var failed = false;
try { File.Delete(path); }
catch { failed = true; }
// If the file is removed, try binding again
return(!failed);
}
}
return(false);
}
private WinPcapDevice getWinPcapDeviceByIP(string ip)
{
// Retrieve the device list
var devices = WinPcapDeviceList.Instance;
// If no devices were found print an error
if (devices.Count < 1)
{
Console.WriteLine("No devices were found on this machine");
return(null);
}
// Find WinPcapDevice that contains input IP address
foreach (WinPcapDevice device in devices)
{
ReadOnlyCollection <PcapAddress> addresses = device.Addresses;
foreach (var pcapAddr in addresses)
{
Sockaddr addr = pcapAddr.Addr;
if (addr.ToString() == ip)
{
return(device);
}
}
}
return(null);
}
private void SendARPIps(IPAddress ip, Sockaddr netmask)
{
IPAddress firstIP = new IPAddress(ip.Address & netmask.ipAddress.Address);
IPAddress lastIP = new IPAddress((uint)((int)ip.Address | (int)~netmask.ipAddress.Address));
SendARPIps(firstIP, lastIP);
}
private void HostDiscoveryArpIpRange(IPAddress ipFrom, IPAddress ipTo)
{
IPAddress localIpv4 = Program.CurrentProject.data.GetIPv4FromDevice(Program.CurrentProject.data.GetDevice());
if ((Program.CurrentProject.data.GetDevice() == null) || (localIpv4 == null))
{
#if DEBUG
MessageBox.Show("Debug: La interfaz no tiene dirección IPv4", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
#endif
return;
}
Sockaddr netmask = Program.CurrentProject.data.GetNetmaskFromIP(Program.CurrentProject.data.GetDevice(), localIpv4);
SendARPIps(ipFrom, ipTo);
}
public static unsafe bool TryCopy(IntPtr source, long size, Sockaddr destination)
{
if (destination == null)
{
throw new ArgumentNullException("destination");
}
byte[] array = Sockaddr.GetDynamicData(destination);
fixed(SockaddrType *addr = &Sockaddr.GetAddress (destination).type)
fixed(byte *data = Sockaddr.GetDynamicData(destination))
{
var dyn = new _SockaddrDynamic(destination, data, useMaxLength: true);
var r = ToSockaddr(source, size, Sockaddr.GetNative(&dyn, addr));
dyn.Update(destination);
// SockaddrStorage has to be handled extra because the native code assumes that SockaddrStorage input is used in-place
if (r == 0 && destination.type == (SockaddrType.SockaddrStorage | SockaddrType.MustBeWrapped))
{
Marshal.Copy(source, array, 0, (int)destination.GetDynamicLength());
}
return(r == 0);
}
}
public static unsafe bool TryCopy(Sockaddr source, IntPtr destination)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
byte[] array = Sockaddr.GetDynamicData(source);
// SockaddrStorage has to be handled extra because the native code assumes that SockaddrStorage input is used in-place
if (source.type == (SockaddrType.SockaddrStorage | SockaddrType.MustBeWrapped))
{
Marshal.Copy(array, 0, destination, (int)source.GetDynamicLength());
return(true);
}
fixed(SockaddrType *addr = &Sockaddr.GetAddress (source).type)
fixed(byte *data = array)
{
var dyn = new _SockaddrDynamic(source, data, useMaxLength: false);
return(FromSockaddr(Sockaddr.GetNative(&dyn, addr), destination) == 0);
}
}
public int OnReadReady()
{
int ret = 0;
while (ret >= 0)
{
// Try to read; we a non-blocking
var addr = new Sockaddr();
ret = Syscall.accept4(listenerSocket, addr, UnixSocketFlags.SOCK_NONBLOCK);
// If we did not get a socket
if (ret < 0)
{
var errno = Stdlib.GetLastError();
if (errno == Errno.EAGAIN || errno == Errno.EWOULDBLOCK)
{
return(1);
}
Log.Error($"Failed to accept socket: {errno}");
return(-1);
}
// got a new socket, create a new connection
if (ret >= 0)
{
var socketHandle = ret;
Log.Epoll("Accepted socket {0}", socketHandle);
var handler = server.GetHandler(ret);
handler.OnAttach(socketHandle);
// subsctibe the new socket to Epoll events
Add(socketHandle, handler.GetEvents());
}
}
return(1);
}
public void SockaddrUnTest()
{
var address1 = new SockaddrUn("/tmp/foo");
Assert.AreEqual(address1.Path, "/tmp/foo");
Assert.IsFalse(address1.IsLinuxAbstractNamespace);
var storage = address1.ToSockaddrStorage();
var address2 = SockaddrUn.FromSockaddrStorage(storage);
Assert.AreEqual(address1, address2);
var sockaddr = Sockaddr.FromSockaddrStorage(storage);
Assert.AreEqual(sockaddr.sa_family, address1.sa_family);
var address3 = new SockaddrUn("/tmp/bar", linuxAbstractNamespace: true);
Assert.AreEqual(address3.Path, "/tmp/bar");
Assert.IsTrue(address3.IsLinuxAbstractNamespace);
var address4 = new SockaddrUn(new string ('X', 9000));
Assert.AreEqual(address4.Path, new string ('X', 9000));
Assert.IsFalse(address4.IsLinuxAbstractNamespace);
var storage2 = address4.ToSockaddrStorage();
var address5 = SockaddrUn.FromSockaddrStorage(storage2);
Assert.AreEqual(address4, address5);
// Test the malloc() path for long SockaddrUn adresses (the syscalls will fail because the fd is invalid and because the path is too long)
Syscall.bind(-1, address4);
Syscall.getsockname(-1, address4);
Assert.AreEqual("{sa_family=AF_UNIX, sun_path=\"/tmp/foo\"}", address1.ToString());
Assert.AreEqual("{sa_family=AF_UNIX, sun_path=\"\\0/tmp/bar\"}", address3.ToString());
}
/// <summary>
/// Waits for a connection and accepts the socket
/// </summary>
/// <returns>The socket and endpoint.</returns>
/// <param name="cancellationToken">Cancellation token.</param>
public async Task <KeyValuePair <long, EndPoint> > AcceptAsync(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
// Try to read; we a non-blocking
var addr = new Sockaddr();
var ret = Syscall.accept(m_socket, addr);
// If we did not get a socket
if (ret < 0)
{
var errno = Stdlib.GetLastError();
if (errno == Errno.EAGAIN || errno == Errno.EWOULDBLOCK)
{
await m_handle.WaitForReadAsync;
// Error code is normal operation code
continue;
}
throw new IOException($"Failed to accept socket: {errno}");
}
// Dummy endpoint
var endpoint = new IPEndPoint(IPAddress.Any, 0);
// If we get a real endpoint, use that
if (addr is SockaddrIn sain)
{
endpoint = new IPEndPoint((long)sain.sin_addr.s_addr, sain.sin_port);
}
return(new KeyValuePair <long, EndPoint>(ret, endpoint));
}
throw new TaskCanceledException();
}
public void IPv6 ()
{
if (!Socket.OSSupportsIPv6)
Assert.Ignore ("OS does not support IPv6.");
var address = new SockaddrIn6 {
sin6_family = UnixAddressFamily.AF_INET6,
sin6_port = Syscall.htons (0),
sin6_addr = NativeConvert.ToIn6Addr (IPAddress.IPv6Loopback),
};
WithSockets (UnixAddressFamily.AF_INET6, UnixSocketType.SOCK_STREAM, 0, (so1, so2) => {
if (Syscall.bind (so1, address) < 0)
UnixMarshal.ThrowExceptionForLastError ();
var address1Stor = new SockaddrStorage ();
if (Syscall.getsockname (so1, address1Stor) < 0)
UnixMarshal.ThrowExceptionForLastError ();
var address1 = new SockaddrIn6 ();
address1Stor.CopyTo (address1);
// Check getsockname(socket, null)
if (Syscall.getsockname (so1, null) < 0)
UnixMarshal.ThrowExceptionForLastError ();
var address2 = new SockaddrIn6 ();
if (Syscall.getsockname (so1, address2) < 0)
UnixMarshal.ThrowExceptionForLastError ();
Assert.AreEqual (address1, address2);
Assert.IsTrue (Syscall.ntohs (address1.sin6_port) != 0);
address1.sin6_port = 0;
Assert.AreEqual (address, address1);
var address3 = new Sockaddr ();
if (Syscall.getsockname (so1, address3) < 0)
UnixMarshal.ThrowExceptionForLastError ();
Assert.AreEqual (address.sa_family, address3.sa_family);
// Try to store a sockaddr_in6 into a Sockaddr. Should fail because sockaddr_in6 should be larger than sockaddr_in
var address4 = new SockaddrIn ();
if (Syscall.getsockname (so1, address4) == 0)
Assert.Fail ("getsockname() should have failed");
Assert.AreEqual (Errno.ENOBUFS, Stdlib.GetLastError ());
});
}
public static unsafe bool TryCopy (IntPtr source, long size, Sockaddr destination)
{
if (destination == null)
throw new ArgumentNullException ("destination");
byte[] array = Sockaddr.GetDynamicData (destination);
fixed (SockaddrType* addr = &Sockaddr.GetAddress (destination).type)
fixed (byte* data = Sockaddr.GetDynamicData (destination)) {
var dyn = new _SockaddrDynamic (destination, data, useMaxLength: true);
var r = ToSockaddr (source, size, Sockaddr.GetNative (&dyn, addr));
dyn.Update (destination);
// SockaddrStorage has to be handled extra because the native code assumes that SockaddrStorage input is used in-place
if (r == 0 && destination.type == (SockaddrType.SockaddrStorage | SockaddrType.MustBeWrapped)) {
Marshal.Copy (source, array, 0, (int) destination.GetDynamicLength ());
}
return r == 0;
}
}
public static unsafe bool TryCopy (Sockaddr source, IntPtr destination)
{
if (source == null)
throw new ArgumentNullException ("source");
byte[] array = Sockaddr.GetDynamicData (source);
// SockaddrStorage has to be handled extra because the native code assumes that SockaddrStorage input is used in-place
if (source.type == (SockaddrType.SockaddrStorage | SockaddrType.MustBeWrapped)) {
Marshal.Copy (array, 0, destination, (int) source.GetDynamicLength ());
return true;
}
fixed (SockaddrType* addr = &Sockaddr.GetAddress (source).type)
fixed (byte* data = array) {
var dyn = new _SockaddrDynamic (source, data, useMaxLength: false);
return FromSockaddr (Sockaddr.GetNative (&dyn, addr), destination) == 0;
}
}
