private ReloadMessage create_reload_message(Destination destination,
UInt64 trans_id, RELOAD_MessageBody reload_content)
{
// markus
if (reload_content.RELOAD_MsgCode == RELOAD_MessageCode.Attach_Request)
{
try
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Add candidates to Dictionary: Transaction ID: {0:x}", trans_id));
foreach (IceCandidate cand in ((AttachReqAns)reload_content).ice_candidates)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Add candidate: {0}:{1}", cand.addr_port.ipaddr.ToString(), cand.addr_port.port));
if (!m_attachRequestCandidates.ContainsKey(trans_id)) // because retry uses same transid
m_attachRequestCandidates.Add(trans_id, ((AttachReqAns)reload_content).ice_candidates);
}
catch (Exception)
{
throw;
}
}
// markus end
return new ReloadMessage(m_ReloadConfig,
m_topology.LocalNode.Id, destination, trans_id, reload_content);
}
/// <summary>
/// This method signs a message content contained within the stream.
/// </summary>
/// <param name="transId">The transaction Id used for signing</param>
/// <param name="stream">The stream containing ONLY the content</param>
public void SignMessage(UInt32 overlay, string transId, RELOAD_MessageBody body)
{
var ms = new MemoryStream();
var br = new BinaryWriter(ms);
body.Dump(br);
ms.Position = 0;
byte[] array = ms.ToArray();
br.Close();
signature = new Signature(overlay, transId, array, signerId, m_ReloadConfig);
}
public ReloadMessage(ReloadConfig rc, NodeId OriginatorNodeID,
Destination destination, UInt64 trans_id, RELOAD_MessageBody reload_content)
{
m_ReloadConfig = rc;
forwarding_header.version = ReloadGlobals.RELOAD_VERSION;
forwarding_header.ttl = ReloadGlobals.TTL;
forwarding_header.overlay = m_ReloadConfig.OverlayHash;
forwarding_header.transaction_id = trans_id;
reload_message_body = reload_content;
forwarding_header.via_list = new List<Destination>();
forwarding_header.via_list.Add(new Destination(OriginatorNodeID));
forwarding_header.destination_list = new List<Destination>();
forwarding_header.destination_list.Add(destination);
SignerIdentity myId = m_ReloadConfig.AccessController.MyIdentity;
security_block = new SecurityBlock(rc, myId);
/* Sign the message, create stream of body */
security_block.SignMessage(m_ReloadConfig.OverlayHash,
trans_id.ToString(), reload_message_body);
}
} // End ToBytes()
public ReloadMessage FromBytes(byte[] bytes, ref long offset, ReadFlags flags)
{
if (bytes == null)
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
"FromBytes: bytes = null!!");
return null;
}
if (offset != 0)
offset = 0;
var ms = new MemoryStream(bytes, (int)offset, (int)(bytes.Count() - offset));
//prepare variable for return (ref value)
offset = 0;
using (var reader = new BinaryReader(ms))
{
try
{
UInt32 RELO_Tag;
//first check if this is a RELOAD message by checking th RELO tag
RELO_Tag = (UInt32)IPAddress.NetworkToHostOrder(reader.ReadInt32());
if (RELO_Tag != RELOTAG)
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
String.Format("==> message has no RELO tag"));
return null;
}
forwarding_header.overlay = (UInt32)IPAddress.NetworkToHostOrder(
reader.ReadInt32());
if (forwarding_header.overlay != m_ReloadConfig.OverlayHash)
throw new System.Exception("Message from wrong overlay! (probably invalid hash)");
/* configuration_sequence */
forwarding_header.configuration_sequence = (UInt16)IPAddress.NetworkToHostOrder(reader.ReadInt16());
/* version */
forwarding_header.version = reader.ReadByte();
/* ttl */
forwarding_header.ttl = reader.ReadByte();
/* fragment */
forwarding_header.fragment = (UInt32)IPAddress.NetworkToHostOrder(reader.ReadInt32());
/* length */
forwarding_header.length = (UInt32)IPAddress.NetworkToHostOrder(reader.ReadInt32());
// obsolete -> auto fragmentation if message too large
//if (forwarding_header.length >= ReloadGlobals.MAX_PACKET_BUFFER_SIZE) {
// m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
// String.Format("==> forwarding header exceeds maximum value of {0}",
// ReloadGlobals.MAX_PACKET_BUFFER_SIZE));
// return null;
//}
/* transaction_id */
forwarding_header.transaction_id = (UInt64)IPAddress.NetworkToHostOrder(reader.ReadInt64());
/* max_response_length */
forwarding_header.max_response_length = (UInt32)IPAddress.NetworkToHostOrder(reader.ReadInt32());
/* via list length */
forwarding_header.via_list_length = (UInt16)IPAddress.NetworkToHostOrder(reader.ReadInt16());
/* destination list length */
forwarding_header.destination_list_length = (UInt16)IPAddress.NetworkToHostOrder(reader.ReadInt16());
/* options length */
forwarding_header.options_length = (UInt16)IPAddress.NetworkToHostOrder(reader.ReadInt16());
if (forwarding_header.via_list_length != 0)
forwarding_header.via_list = ReadDestList(reader, forwarding_header.via_list_length);
if (forwarding_header.destination_list_length != 0)
forwarding_header.destination_list = ReadDestList(reader, forwarding_header.destination_list_length);
if (forwarding_header.options_length != 0)
forwarding_header.fw_options = ReadOptionList(reader, forwarding_header.options_length);
long reload_msg_begin = ms.Position;
if (0 != (forwarding_header.fragment & 0x80000000))
{ //is this a fragment?
uint fragment_offset = (forwarding_header.fragment & 0x3FFFFFFF);
bool last_fragment = ((forwarding_header.fragment & 0x40000000) != 0);
if (fragment_offset == 0 && last_fragment == true)
{
//single fragment message (means not fragmented) => process as usual
}
else
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_FRAGMENTATION, String.Format("Fragmented Message: offset " + fragment_offset + "READ bytes " + (forwarding_header.length - reload_msg_begin)) + " left " + (reader.BaseStream.Length - ms.Position));
reload_message_body = new MessageFragment(RELOAD_MessageCode.Invalid, fragment_offset, last_fragment).FromReader(this, reader, forwarding_header.length - reload_msg_begin); //this should be the fragmentsize instead of ms.Length better use forwardingheader.length TODO: FIX it
offset = ms.Position;
return this;
}
}
// now turn to message body
RELOAD_MessageCode MsgCode = (RELOAD_MessageCode)(UInt16)IPAddress.NetworkToHostOrder(reader.ReadInt16());
// now read message length
long reload_msg_size = (UInt32)IPAddress.NetworkToHostOrder(reader.ReadInt32());
/* set pointer before msg code that the message routines itself
* can read it again
*/
ms.Seek(reload_msg_begin, SeekOrigin.Begin);
switch (MsgCode)
{
case RELOAD_MessageCode.Probe_Request:
case RELOAD_MessageCode.Probe_Answer:
break;
case RELOAD_MessageCode.Attach_Request:
case RELOAD_MessageCode.Attach_Answer:
reload_message_body = new AttachReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Store_Request:
reload_message_body = new StoreReq(
m_ReloadConfig.ThisMachine.UsageManager).FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Store_Answer:
reload_message_body = new StoreAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Fetch_Request:
reload_message_body = new FetchReq(m_ReloadConfig.ThisMachine.UsageManager).FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Fetch_Answer:
reload_message_body = new FetchAns(m_ReloadConfig.ThisMachine.UsageManager).FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Remove_Request:
case RELOAD_MessageCode.Remove_Answer:
//reload_message_body = new RemoveReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Find_Request:
case RELOAD_MessageCode.Find_Answer:
break;
case RELOAD_MessageCode.Join_Request:
case RELOAD_MessageCode.Join_Answer:
reload_message_body = new JoinReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Leave_Request:
case RELOAD_MessageCode.Leave_Answer:
reload_message_body = new LeaveReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Update_Request:
case RELOAD_MessageCode.Update_Answer:
reload_message_body = new UpdateReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Route_Query_Request:
case RELOAD_MessageCode.Route_Query_Answer:
break;
case RELOAD_MessageCode.Ping_Request:
reload_message_body = new PingReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Ping_Answer:
reload_message_body = new PingReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Stat_Request:
case RELOAD_MessageCode.Stat_Answer:
break;
case RELOAD_MessageCode.App_Attach_Request:
case RELOAD_MessageCode.App_Attach_Answer:
reload_message_body = new AppAttachReqAns().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Error:
reload_message_body = new ErrorResponse().FromReader(this, reader, reload_msg_size);
break;
case RELOAD_MessageCode.Unused:
case RELOAD_MessageCode.Unused2:
default:
throw new System.Exception(String.Format("Invalid RELOAD message type {0}", MsgCode));
}
if (reload_message_body != null)
reload_message_body.RELOAD_MsgCode = MsgCode;
// now read message extension length
UInt32 message_extension_size = (UInt32)IPAddress.NetworkToHostOrder(
reader.ReadInt32());
if (message_extension_size != 0)
{
//skip message extension length
reader.ReadBytes((int)message_extension_size);
}
if (ReloadGlobals.TLS)
{
/* Obtain security block */
security_block = new SecurityBlock(m_ReloadConfig).FromReader(reader, reload_msg_size);
}
else
{ // do the FAKE
int iNodeIDLen = reader.ReadByte();
if (iNodeIDLen != 0)
{
NodeId nodeid = new NodeId(reader.ReadBytes(iNodeIDLen));
if (flags != ReadFlags.no_certcheck)
{
if (ReloadGlobals.TLS && nodeid != security_block.OriginatorNodeID)
throw new System.Exception("Wrong message Originator!");
security_block.OriginatorNodeID = nodeid;
}
}
else
throw new System.Exception("Originator of message cannot be read!");
int iLHNodeIDLen = reader.ReadByte();
if (iLHNodeIDLen != 0)
LastHopNodeId = new NodeId(reader.ReadBytes(iLHNodeIDLen));
}
offset = ms.Position;
return this;
} // End mok security
catch (Exception ex)
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
"ReloadMesssage.FromBytes(): " + ex.Message);
return null;
}
}
}
