public MibNode GenerateTree()
{
//Hardcoded roots of the tree
var masterNode = new MibNode(1, "ISO", null);
masterNode.AddChild(new MibNode(3, "org", masterNode));
var org = masterNode.GetMibNodeStack().FirstOrDefault(node => node.NodeName == "org");
org?.AddChild(new MibNode(6, "dod", org));
var dod = masterNode.GetMibNodeStack().FirstOrDefault(node => node.NodeName == "dod");
dod?.AddChild(new MibNode(1, "internet", dod));
var internet = masterNode.GetMibNodeStack().FirstOrDefault(node => node.NodeName == "internet");
internet?.AddChild(new MibNode(2, "mgmt", internet));
var mibText = fileReader.GetFileEntireText(ParserConst.MIBPath);
//Load imports
var imports = importsLoader.ParseImports(mibText); //TODO load this files
var objectIdentifierMatch = objectIdentifierRegex.Matches(mibText);
foreach (Match match in objectIdentifierMatch)
{
var groups = match.Groups;
var name = groups["name"].ToString().Trim(' ');
var parent = groups["parent"].ToString().Split(' ')[1].Trim(' ');
var valueString = groups["parent"].ToString().Split(' ')[2].Trim(' ');
var value = int.Parse(valueString);
var parentNode = masterNode.GetMibNodeStack().FirstOrDefault(node => node.NodeName == parent);
parentNode?.AddChild(new MibNode(value, name, parentNode));
}
var sequenceMatch = sequenceRegex.Matches(mibText);
foreach (Match match in sequenceMatch)
{
var sequenceValues = getSequenceValuesRegex.Matches(match.Groups["values"].Value);
foreach (Match sequenceValue in sequenceValues)
{
var name = sequenceValue.Groups["name"].Value;
var value = sequenceValue.Groups["value"].Value;
//TODO
}
}
var objectTypeMatch = objectTypeRegex.Matches(mibText);
foreach (Match match in objectTypeMatch)
{
var objectTypeText = match.Value;
var name = nameOfNode.Match(objectTypeText).Groups["name"].Value.Trim(' ');
var typeOfNode = this.typeOfNode.Match(objectTypeText).Groups["syntax"];
var access = typeOfAccess.Match(objectTypeText).Groups["access"];
var status = this.status.Match(objectTypeText).Groups["status"];
var description = this.description.Match(objectTypeText).Groups["description"];
var parentName = parentAndId.Match(objectTypeText).Groups["parent"];
var id = parentAndId.Match(objectTypeText).Groups["parentId"];
if (IsObjectComplete(name, typeOfNode, access, status, parentName, id))
{
var idParsed = int.Parse(id.ToString());
var parentNode = masterNode.GetMibNodeStack()
.FirstOrDefault(node => node.NodeName == parentName.ToString());
AccessTypes accessType;
if (access.Value.Contains("read-write"))
{
accessType = AccessTypes.ReadWrite;
}
else if (access.Value.Contains("read-only"))
{
accessType = AccessTypes.ReadOnly;
}
else
{
accessType = AccessTypes.NoAccess;
}
if (typeOfNode.ToString().Contains("{"))
{
var valueOfType = complexTypeOfNode.Match(match.Value).Value;
var values = getNumbers.Matches(valueOfType);
var min = values[0].Value;
var max = values[values.Count - 1].Value;
min = min.Substring(0, min.Length - 1);
max = max.Substring(0, max.Length - 1);
var limiter = new Limiter(int.Parse(min), int.Parse(max));
parentNode?.AddChild(new ObjectType(idParsed, name, parentNode, typeOfNode.Value, accessType,
status.Value, description.Value, limiter));
}
else if (typeOfNode.ToString().Contains(".."))
{
var numbers = splitDotNumbers.Match(typeOfNode.Value);
var min = numbers.Groups["min"].Value;
var max = numbers.Groups["max"].Value;
var limiter = new Limiter(int.Parse(min), int.Parse(max));
parentNode?.AddChild(new ObjectType(idParsed, name, parentNode, typeOfNode.Value, accessType,
status.Value, description.Value, limiter));
}
else
{
parentNode?.AddChild(new ObjectType(idParsed, name, parentNode, typeOfNode.Value, accessType,
status.Value, description.Value));
}
}
}
return(masterNode);
}
public byte[] ProcessMessage(byte[] incomingMessage)
{
var incoming = decoder.Decode(incomingMessage);
var outgoing = new SNMPMessage();
outgoing.SNMPMessageType = SNMPMessageTypes.GetResponse;
outgoing.CommunityString = incoming.CommunityString;
outgoing.RawObjectId = incoming.RawObjectId;
outgoing.ReqId = incoming.ReqId;
if (incoming.CommunityString != community)
{
return(null);
}
switch (incoming.SNMPMessageType)
{
case SNMPMessageTypes.GetRequest:
if (incoming.ObjectId[incoming.ObjectId.Length - 1] == '0')
{
var object_id = incoming.ObjectId.Substring(2);
var myNode = (ObjectType)master.GetMibNodeStack()
.FirstOrDefault(node => node.GetOID() == object_id.Substring(0, object_id.Length - 2));
if (myNode != null)
{
if (myNode.IsReadable())
{
switch (myNode.NodeType)
{
case NodeTypes.TypeInteger:
outgoing.IntValue = myNode.IntValue;
break;
case NodeTypes.TypeCounter:
outgoing.IntValue = myNode.IntValue;
outgoing.AplicationSpecId = 0x41;
break;
case NodeTypes.TypeGauge:
outgoing.IntValue = myNode.IntValue;
outgoing.AplicationSpecId = 0x42;
break;
case NodeTypes.TypeTimeTicks:
outgoing.IntValue = myNode.IntValue;
outgoing.AplicationSpecId = 0x43;
break;
case NodeTypes.TypeDisplayString:
case NodeTypes.TypePhysAddress:
outgoing.OctetStringValue = myNode.OctetStringValue;
break;
default:
break;
}
}
else
{
outgoing.Error = 0x05;
}
}
else
{
outgoing.Error = 0x02;
}
}
break;
case SNMPMessageTypes.SetRequest:
if (incoming.ObjectId[incoming.ObjectId.Length - 1] == '0')
{
var object_id = incoming.ObjectId.Substring(2);
var myNode = (ObjectType)master.GetMibNodeStack()
.FirstOrDefault(node => node.GetOID() == object_id.Substring(0, object_id.Length - 2));
if (myNode != null)
{
if (myNode.IsWritable())
{
if (incoming.OctetStringValue != null)
{
switch (myNode.NodeType)
{
case NodeTypes.TypeDisplayString:
case NodeTypes.TypePhysAddress:
outgoing.OctetStringValue = incoming.OctetStringValue;
if (myNode.SetValue(incoming.OctetStringValue))
{
;
}
else
{
outgoing.Error = 0x05;
}
break;
default:
outgoing.Error = 0x03;
break;
}
}
else
{
switch (myNode.NodeType)
{
case NodeTypes.TypeInteger:
outgoing.IntValue = incoming.IntValue;
if (myNode.SetValue((int)incoming.IntValue))
{
;
}
else
{
outgoing.Error = 0x05;
}
break;
case NodeTypes.TypeCounter:
outgoing.IntValue = incoming.IntValue;
outgoing.AplicationSpecId = 0x41;
if (myNode.SetValue((int)incoming.IntValue))
{
;
}
else
{
outgoing.Error = 0x05;
}
break;
case NodeTypes.TypeGauge:
outgoing.IntValue = incoming.IntValue;
outgoing.AplicationSpecId = 0x42;
if (myNode.SetValue((int)incoming.IntValue))
{
;
}
else
{
outgoing.Error = 0x05;
}
break;
case NodeTypes.TypeTimeTicks:
outgoing.IntValue = incoming.IntValue;
outgoing.AplicationSpecId = 0x43;
if (myNode.SetValue((int)incoming.IntValue))
{
;
}
else
{
outgoing.Error = 0x05;
}
break;
default:
outgoing.Error = 0x03;
break;
}
}
}
else
{
outgoing.Error = 0x04;
}
}
else
{
outgoing.Error = 0x02;
}
}
break;
default:
break;
}
var return_message = coder.Encode(outgoing);
return(return_message);
}
