private void sendBuf(ErlTuple ctrl, ErlOutputStream payload = null)
{
if (!m_Connected)
{
throw new ErlException(StringConsts.ERL_CONN_NOT_CONNECTED_ERROR);
}
var header = new ErlOutputStream(writeVersion: false, capacity: HEADER_LEN);
// preamble: 4 byte length + "PASS_THROUGH" tag + version
header.Write4BE(0); // reserve space for length
header.Write1(PASS_THROUGH);
header.Write1((byte)ErlExternalTag.Version);
// header info
header.WriteTuple(ctrl);
// version for payload
//header.Write1((byte)ErlExternalTag.Version); // Note that it's already written in the payload
if (payload == null)
{
header.Poke4BE(0, (int)(header.Length - 4));
DoSend(header);
}
else
{
header.Poke4BE(0, (int)(header.Length + payload.Length - 4));
DoSend(header, payload);
}
}
private void sendChallenge(int dist, ErlAbstractNode.NodeCompatibility flags, int challenge)
{
ErlAtom str = m_Home.NodeName;
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 11 + str.Length);
obuf.Write2BE((short)str.Length + 11); // 11 bytes + nodename
obuf.Write1((byte)ErlAbstractNode.NodeType.Ntype_R6);
obuf.Write2BE((short)dist);
obuf.Write4BE((int)flags);
obuf.Write4BE(challenge);
obuf.Write(Encoding.ASCII.GetBytes(str.Value));
obuf.WriteTo(m_TcpClient.GetStream());
m_Home.OnTrace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendChallenge(flags({0:X2})={1}, dist={2}, challenge={3}, local={4}".Args(
(int)flags, flags, dist, challenge, m_Home.AliveName));
}
private void sendChallengeReply(int challenge, byte[] digest)
{
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 23);
obuf.Write2BE(21);
obuf.Write1(CHALLENGE_REPLY);
obuf.Write4BE(challenge);
obuf.Write(digest);
obuf.WriteTo(m_TcpClient.GetStream());
m_Home.OnTrace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendChallengeReply(challenge={0}, digest={1}, local={2}".Args(
challenge, hex(digest), m_Home.NodeName.Value));
}
private void sendName(int dist, ErlAbstractNode.NodeCompatibility flags)
{
string str = m_Home.NodeName.Value;
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 7 + str.Length);
obuf.Write2BE(str.Length + 7); // 7 bytes + nodename
obuf.Write1((int)ErlAbstractNode.NodeType.Ntype_R6);
obuf.Write2BE((short)dist);
obuf.Write4BE((int)flags);
obuf.Write(Encoding.ASCII.GetBytes(str));
obuf.WriteTo(m_Transport.GetStream());
m_Home.OnTrace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendName(flags({0:X2})={1}, dist={2}, local={3}".Args(
(int)flags, flags, dist, m_Home.AliveName));
}
/// <summary>
/// Send an auth error to peer because he sent a bad cookie
/// The auth error uses his cookie (not revealing ours).
/// This is just like send_reg otherwise
/// </summary>
private void cookieError(ErlLocalNode local, ErlAtom cookie)
{
var header = new ErlOutputStream(writeVersion: false, capacity: HEADER_LEN);
// preamble: 4 byte length + "PASS_THROUGH" tag + version
header.Write4BE(0); // reserve space for length
header.Write1(PASS_THROUGH);
header.Write1((byte)ErlExternalTag.Version);
header.WriteTupleHead(4);
header.WriteLong((long)ErlMsg.Tag.RegSend);
header.WritePid(local.CreatePid()); // disposable pid
header.WriteAtom(cookie); // important: his cookie, not mine...
header.WriteAtom("auth");
// version for payload written later by the payload stream
//header.Write1((byte)ErlExternalTag.Version);
// the payload
// the no_auth message (copied from Erlang) Don't change this (Erlang will crash)
// {$gen_cast, {print, "~n** Unauthorized cookie ~w **~n", [foo@aule]}}
var msg = ErlObject.Parse(
"{'$gen_cast', {print, \"\n** Unauthorized cookie ~w **\n\", [" + local.NodeName.Value + "]}}");
var payload = new ErlOutputStream(msg, writeVersion: true);
// fix up length in preamble
header.Poke4BE(0, (int)(header.Length + payload.Length - 4));
try
{
DoSend(header, payload);
}
catch (Exception e)
{
Close();
throw new ErlException(StringConsts.ERL_CONN_UNAUTH_COOKIE_ERROR.Args(cookie.Value), e);
}
}
private void sendName(int dist, ErlAbstractNode.NodeCompatibility flags)
{
string str = m_Home.NodeName.Value;
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 7 + str.Length);
obuf.Write2BE(str.Length + 7); // 7 bytes + nodename
obuf.Write1((int)ErlAbstractNode.NodeType.Ntype_R6);
obuf.Write2BE((short)dist);
obuf.Write4BE((int)flags);
obuf.Write(Encoding.ASCII.GetBytes(str));
obuf.WriteTo(m_Transport.GetStream());
m_Home.OnTrace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendName(flags({0:X2})={1}, dist={2}, local={3}".Args(
(int)flags, flags, dist, m_Home.AliveName));
}
private void sendChallengeReply(int challenge, byte[] digest)
{
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 23);
obuf.Write2BE(21);
obuf.Write1(CHALLENGE_REPLY);
obuf.Write4BE(challenge);
obuf.Write(digest);
obuf.WriteTo(m_Transport.GetStream());
m_Home.OnTrace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendChallengeReply(challenge={0}, digest={1}, local={2}".Args(
challenge, hex(digest), m_Home.NodeName.Value));
}
private void sendBuf(ErlTuple ctrl, ErlOutputStream payload = null)
{
if (!m_Connected)
throw new ErlException(StringConsts.ERL_CONN_NOT_CONNECTED_ERROR);
var header = new ErlOutputStream(writeVersion: false, capacity: HEADER_LEN);
// preamble: 4 byte length + "PASS_THROUGH" tag + version
header.Write4BE(0); // reserve space for length
header.Write1(PASS_THROUGH);
header.Write1((byte)ErlExternalTag.Version);
// header info
header.WriteTuple(ctrl);
// version for payload
//header.Write1((byte)ErlExternalTag.Version); // Note that it's already written in the payload
if (payload == null)
{
header.Poke4BE(0, (int)(header.Length - 4));
DoSend(header);
}
else
{
header.Poke4BE(0, (int)(header.Length + payload.Length - 4));
DoSend(header, payload);
}
}
/// <summary>
/// Send an auth error to peer because he sent a bad cookie
/// The auth error uses his cookie (not revealing ours).
/// This is just like send_reg otherwise
/// </summary>
private void cookieError(ErlLocalNode local, ErlAtom cookie)
{
var header = new ErlOutputStream(writeVersion: false, capacity: HEADER_LEN);
// preamble: 4 byte length + "PASS_THROUGH" tag + version
header.Write4BE(0); // reserve space for length
header.Write1(PASS_THROUGH);
header.Write1((byte)ErlExternalTag.Version);
header.WriteTupleHead(4);
header.WriteLong((long)ErlMsg.Tag.RegSend);
header.WritePid(local.CreatePid()); // disposable pid
header.WriteAtom(cookie); // important: his cookie, not mine...
header.WriteAtom("auth");
// version for payload written later by the payload stream
//header.Write1((byte)ErlExternalTag.Version);
// the payload
// the no_auth message (copied from Erlang) Don't change this (Erlang will crash)
// {$gen_cast, {print, "~n** Unauthorized cookie ~w **~n", [foo@aule]}}
var msg = ErlObject.Parse(
"{'$gen_cast', {print, \"\n** Unauthorized cookie ~w **\n\", [" + local.NodeName.Value + "]}}");
var payload = new ErlOutputStream(msg, writeVersion: true);
// fix up length in preamble
header.Poke4BE(0, (int)(header.Length + payload.Length - 4));
try
{
DoSend(header, payload);
}
catch (Exception e)
{
Close();
throw new ErlException(StringConsts.ERL_CONN_UNAUTH_COOKIE_ERROR.Args(cookie.Value), e);
}
}
private void sendChallenge(int dist, ErlAbstractNode.NodeCompatibility flags, int challenge)
{
ErlAtom str = m_Home.NodeName;
var obuf = new ErlOutputStream(writeVersion: false, writePktSize: false, capacity: 11 + str.Length);
obuf.Write2BE((short)str.Length + 11); // 11 bytes + nodename
obuf.Write1((byte)ErlAbstractNode.NodeType.Ntype_R6);
obuf.Write2BE((short)dist);
obuf.Write4BE((int)flags);
obuf.Write4BE(challenge);
obuf.Write(Encoding.ASCII.GetBytes(str.Value));
obuf.WriteTo(m_TcpClient.GetStream());
m_Home.Trace(ErlTraceLevel.Handshake, Direction.Outbound, () =>
"sendChallenge(flags({0:X2})={1}, dist={2}, challenge={3}, local={4}".Args(
(int)flags, flags, dist, challenge, m_Home.AliveName));
}
