public bool AddRSU(RSU rsu)
{
if (_managerContext.RSUs.Any(r => r.Id == rsu.Id))
{
return(false);
}
_managerContext.Add(rsu);
_managerContext.SaveChanges();
return(true);
}
public bool UpdateRSU(RSU rsu)
{
var rsu_mod = GetRSU(rsu.Id);
if (rsu_mod == null)
{
return(false);
}
_managerContext.Update(rsu);
_managerContext.SaveChanges();
return(true);
}
public async Task <IActionResult> OnPostAsync(int?id, int?managerId)
{
if (!id.HasValue)
{
return(NotFound());
}
var user = _applicationDbContext.Users
.Include(u => u.UserManagerUsers)
.FirstOrDefault(u => u.UserName == HttpContext.User.Identity.Name);
if (user == null)
{
// TODO finish
}
if (!managerId.HasValue)
{
return(NotFound());
}
var manager = _applicationDbContext.Managers
.Include(m => m.Users)
.FirstOrDefault(m => m.Id == managerId.Value);
if (manager == null)
{
return(NotFound());
}
var managerUser = user.UserManagerUsers.FirstOrDefault(umu => umu.ManagerUserManagerId == managerId)?.ManagerUser;
if (managerUser == null)
{
return(NotFound($"There's no Manager User assigned to this User, with {RSU.Manager.Name} Manager"));
}
RSU = await _rsuService.GetAsync(managerUser, id.Value);
if (RSU == null)
{
return(NotFound());
}
else
{
await _rsuService.DeleteAsync(managerUser, id.Value);
}
return(RedirectToPage("./Index"));
}
public async Task <bool> UpdateAsync(ManagerUser managerUser, RSU rsu)
{
var host = GetHost(managerUser);
try
{
var result = await _httpClinet.PutAsJsonAsync($"http://{host}:{managerUser.Manager.Port}/{controller}/{managerUser.Name}/{managerUser.Token}", rsu.ConvertToRSUDto());
return(true);
}
catch (HttpRequestException ex)
{
return(false);
}
}
public async Task <RSU> GetAsync(ManagerUser managerUser, int id)
{
var host = GetHost(managerUser);
try
{
var result = await _httpClinet.GetStringAsync($"http://{host}:{managerUser.Manager.Port}/{controller}/{managerUser.Name}/{managerUser.Token}/{id}");
var rsu = RsuDto.FromJson(result);
return(RSU.Parse(rsu, managerUser.Manager));
}
catch (HttpRequestException ex)
{
return(null);
}
}
public async Task <IEnumerable <RSU> > GetAsync(ManagerUser managerUser)
{
var host = GetHost(managerUser);
try
{
var result = await _httpClinet.GetStringAsync($"http://{host}:{managerUser.Manager.Port}/{controller}/{managerUser.Name}/{managerUser.Token}");
var rsus = RsuDto.FromJsonCollection(result);
return(rsus.Select(r => RSU.Parse(r, managerUser.Manager)).ToList());
}
catch (HttpRequestException ex)
{
return(null);
}
}
public bool Set(RSU rsu, Core.Entities.User user, string OID, SnmpType type, string value)
{
IPEndPoint receiver = new IPEndPoint(rsu.IP, rsu.Port);
int timeout = _managerSettings.Timeout;
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetRequestPdu);
ReportMessage report = discovery.GetResponse(timeout, receiver);
var auth = new SHA1AuthenticationProvider(new Lextm.SharpSnmpLib.OctetString(user.SNMPv3Auth));
var priv = new DESPrivacyProvider(new Lextm.SharpSnmpLib.OctetString(user.SNMPv3Priv), auth);
ISnmpData data;
try
{
data = ConvertStringValue2SnmpData(type, value);
}
catch (InvalidDataType invalidDataType) { throw invalidDataType; }
catch (FormatException formatException) { throw formatException; }
List <Variable> variables = new List <Variable>()
{
new Variable(new ObjectIdentifier(OID), data)
};
SetRequestMessage request = new SetRequestMessage(VersionCode.V3
, Messenger.NextMessageId
, Messenger.NextRequestId
, new OctetString(user.UserName)
, new OctetString(String.Empty)
, variables
, priv
, Messenger.MaxMessageSize
, report);
ISnmpMessage reply = request.GetResponse(timeout, receiver);
// Need to send again (RFC 3414)
if (reply is ReportMessage)
{
//throw new ReplyIsReportMessage();
request = new SetRequestMessage(VersionCode.V3
, Messenger.NextMessageId
, Messenger.NextRequestId
, new OctetString(user.UserName)
, new OctetString(String.Empty)
, variables
, priv
, Messenger.MaxMessageSize
, reply);
reply = request.GetResponse(timeout, receiver);
if (reply.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new InvalidDataType();
}
}
else if (reply.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new InvalidDataType();
}
return(true);
}
public List <MIBObject> Get(RSU rsu, Core.Entities.User user, string OID)
{
List <MIBObject> mibObjects;
try
{
IPEndPoint receiver = new IPEndPoint(rsu.IP, rsu.Port);
int timeout = _managerSettings.Timeout;
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetRequestPdu);
ReportMessage report = discovery.GetResponse(timeout, receiver);
var auth = new SHA1AuthenticationProvider(new Lextm.SharpSnmpLib.OctetString(user.SNMPv3Auth));
var priv = new DESPrivacyProvider(new Lextm.SharpSnmpLib.OctetString(user.SNMPv3Priv), auth);
GetRequestMessage request = new GetRequestMessage(VersionCode.V3
, Messenger.NextMessageId
, Messenger.NextRequestId
, new OctetString(user.UserName)
, new OctetString(String.Empty)
, new List <Variable> {
new Variable(new ObjectIdentifier(OID))
}
, priv
, Messenger.MaxMessageSize
, report);
ISnmpMessage reply = request.GetResponse(timeout, receiver);
// Need to send again (RFC 3414)???
if (reply is ReportMessage)
{
//throw new ReplyIsReportMessage();
request = new GetRequestMessage(VersionCode.V3
, Messenger.NextMessageId
, Messenger.NextRequestId
, new OctetString(user.UserName)
, new OctetString(String.Empty)
, new List <Variable> {
new Variable(new ObjectIdentifier(OID))
}
, priv
, Messenger.MaxMessageSize
, reply);
reply = request.GetResponse(timeout, receiver);
if (reply.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new SnmpGetError();
}
}
else if (reply.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new SnmpGetError();
}
mibObjects = SNMPVariables2MIBObjects(reply.Pdu().Variables);
return(mibObjects);
}
catch (Lextm.SharpSnmpLib.Messaging.TimeoutException ex)
{
mibObjects = new List <MIBObject>();
mibObjects.Add(new MIBObject("0", SnmpType.OctetString, "Timeout"));
return(mibObjects);
}
}
public void SetTrapListener(RSU rsu, IPAddress listenerIP, int listenerPort)
{
throw new NotImplementedException();
}
private void MessageReceived(object sender, MessageReceivedEventArgs e)
{
using (var scope = _serviceProvider.CreateScope())
{
var contextService = scope.ServiceProvider.GetRequiredService <IContextService>();
RSU rsu = contextService.GetRSU().SingleOrDefault(r => r.IP.ToString() == e.Sender.Address.ToString() &&
r.Port == e.Sender.Port);
// Registrate new RSU +
if (rsu == null)
{
bool success = contextService.AddRSU(new RSU
{
Name = "Unnamed",
IP = e.Sender.Address,
Port = e.Sender.Port,
Active = true,
MIBVersion = "unknown",
FirmwareVersion = "unknown",
LocationDescription = "unknown",
Manufacturer = "unknown",
NotificationIP = ownIP,
NotificationPort = listenerPort
});
if (success)
{
rsu = contextService.GetRSU().Single(r => r.IP == e.Sender.Address && r.Port == e.Sender.Port);
// Get the unknow rsu latitude and longitude values and assign it to the rsu
var snmpService = scope.ServiceProvider.GetRequiredService <ISNMPManagerService>();
snmpService.Configure(contextService.GetManagerSettings());
var mibo = snmpService.Get(rsu, contextService.GetUser("admin"), "0.1.15628.4.1.8.6").FirstOrDefault();
double lat = (double.TryParse(mibo.Value, out lat)) ? lat / 1000000 : 0.0;
mibo = snmpService.Get(rsu, contextService.GetUser("admin"), "0.1.15628.4.1.8.7").FirstOrDefault();
double lon = (double.TryParse(mibo.Value, out lon)) ? lon / 1000000 : 0.0;
rsu.Latitude = lat;
rsu.Longitude = lon;
contextService.UpdateRSU(rsu);
contextService.AddManagerLog(new ManagerLog(DateTime.Now, LogType.DB, $"Registered new RSU with id: {rsu.Id}"));
}
else
{
contextService.AddManagerLog(new ManagerLog(DateTime.Now, LogType.DB, $"Registering new RSU({e.Sender.Address.ToString()}/{e.Sender.Port}) failed"));
return;
}
}
// Registrate new RSU -
else
{
if (!rsu.Active)
{
rsu.Active = true;
contextService.UpdateRSU(rsu);
}
}
if (e.Message.Parameters.IsInvalid)
{
contextService.AddTrapLog(new TrapLog(DateTime.Now, LogType.SNMP, rsu.Id, "Invalid Trap mesage!"));
}
try
{
if (e.Message.Scope.Pdu.Variables.Count == 0)
{
contextService.AddTrapLog(new TrapLog(DateTime.Now, LogType.SNMP, rsu.Id, "Heartbeat ping"));
}
/*if (e.Message.Scope.Pdu.TypeCode == SnmpType.TrapV2Pdu)
* {
* TrapV2Pdu v2trap = (TrapV2Pdu) e.Message.Scope.Pdu;
* var variables = v2trap.Variables.ToList();
* //contextService.AddTrapLog(new TrapLog(DateTime.Now, LogType.SNMP, rsu.GetValueOrDefault(), v2trap.Variables..ToString()));
* }*/
}
catch (Exception ex)
{
contextService.AddTrapLog(new TrapLog(DateTime.Now, LogType.SNMP, rsu.Id, $"Error processing Trap message! {ex.Message.Take(250)}"));
}
}
}
