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);
}
private bool CommandMatched(ISnmpMessage message)
{
var codeString = message.Pdu().TypeCode.ToString();
return StringEquals(_command, "*") || StringEquals(_command + "RequestPdu", codeString) ||
StringEquals(_command + "Pdu", codeString);
}
public static void Main(string[] args)
{
string community = "public";
bool showHelp = false;
bool showVersion = false;
VersionCode version = VersionCode.V1;
int timeout = 1000;
int retry = 0;
Levels level = Levels.Reportable;
string user = string.Empty;
string authentication = string.Empty;
string authPhrase = string.Empty;
string privacy = string.Empty;
string privPhrase = string.Empty;
bool dump = false;
OptionSet p = new OptionSet()
.Add("c:", "Community name, (default is public)", delegate(string v) { if (v != null)
{
community = v;
}
})
.Add("l:", "Security level, (default is noAuthNoPriv)", delegate(string v)
{
if (v.ToUpperInvariant() == "NOAUTHNOPRIV")
{
level = Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHNOPRIV")
{
level = Levels.Authentication | Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHPRIV")
{
level = Levels.Authentication | Levels.Privacy | Levels.Reportable;
}
else
{
throw new ArgumentException("no such security mode: " + v);
}
})
.Add("a:", "Authentication method (MD5 or SHA)", delegate(string v) { authentication = v; })
.Add("A:", "Authentication passphrase", delegate(string v) { authPhrase = v; })
.Add("x:", "Privacy method", delegate(string v) { privacy = v; })
.Add("X:", "Privacy passphrase", delegate(string v) { privPhrase = v; })
.Add("u:", "Security name", delegate(string v) { user = v; })
.Add("h|?|help", "Print this help information.", delegate(string v) { showHelp = v != null; })
.Add("V", "Display version number of this application.", delegate(string v) { showVersion = v != null; })
.Add("d", "Display message dump", delegate(string v) { dump = true; })
.Add("t:", "Timeout value (unit is second).", delegate(string v) { timeout = int.Parse(v) * 1000; })
.Add("r:", "Retry count (default is 0)", delegate(string v) { retry = int.Parse(v); })
.Add("v:", "SNMP version (1, 2, and 3 are currently supported)", delegate(string v)
{
switch (int.Parse(v))
{
case 1:
version = VersionCode.V1;
break;
case 2:
version = VersionCode.V2;
break;
case 3:
version = VersionCode.V3;
break;
default:
throw new ArgumentException("no such version: " + v);
}
});
if (args.Length == 0)
{
ShowHelp(p);
return;
}
List <string> extra;
try
{
extra = p.Parse(args);
}
catch (OptionException ex)
{
Console.WriteLine(ex.Message);
return;
}
if (showHelp)
{
ShowHelp(p);
return;
}
if (extra.Count < 2)
{
Console.WriteLine("invalid variable number: " + extra.Count);
return;
}
if (showVersion)
{
Console.WriteLine(Assembly.GetEntryAssembly().GetCustomAttribute <AssemblyVersionAttribute>().Version);
return;
}
IPAddress ip;
bool parsed = IPAddress.TryParse(extra[0], out ip);
if (!parsed)
{
var addresses = Dns.GetHostAddressesAsync(extra[0]);
addresses.Wait();
foreach (IPAddress address in
addresses.Result.Where(address => address.AddressFamily == AddressFamily.InterNetwork))
{
ip = address;
break;
}
if (ip == null)
{
Console.WriteLine("invalid host or wrong IP address found: " + extra[0]);
return;
}
}
try
{
List <Variable> vList = new List <Variable>();
for (int i = 1; i < extra.Count; i++)
{
Variable test = new Variable(new ObjectIdentifier(extra[i]));
vList.Add(test);
}
IPEndPoint receiver = new IPEndPoint(ip, 161);
if (version != VersionCode.V3)
{
GetNextRequestMessage message = new GetNextRequestMessage(0,
version,
new OctetString(community),
vList);
ISnmpMessage response = message.GetResponse(timeout, receiver);
if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
foreach (Variable variable in response.Pdu().Variables)
{
Console.WriteLine(variable);
}
return;
}
if (string.IsNullOrEmpty(user))
{
Console.WriteLine("User name need to be specified for v3.");
return;
}
IAuthenticationProvider auth = (level & Levels.Authentication) == Levels.Authentication
? GetAuthenticationProviderByName(authentication, authPhrase)
: DefaultAuthenticationProvider.Instance;
IPrivacyProvider priv;
if ((level & Levels.Privacy) == Levels.Privacy)
{
#if NET452
priv = new DESPrivacyProvider(new OctetString(privPhrase), auth);
#else
Console.WriteLine("DES (ECB) is not supported by .NET Core.");
return;
#endif
}
else
{
priv = new DefaultPrivacyProvider(auth);
}
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetNextRequestPdu);
ReportMessage report = discovery.GetResponse(timeout, receiver);
GetNextRequestMessage request = new GetNextRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, report);
ISnmpMessage reply = request.GetResponse(timeout, receiver);
if (dump)
{
Console.WriteLine("Request message bytes:");
Console.WriteLine(ByteTool.Convert(request.ToBytes()));
Console.WriteLine("Response message bytes:");
Console.WriteLine(ByteTool.Convert(reply.ToBytes()));
}
if (reply is ReportMessage)
{
if (reply.Pdu().Variables.Count == 0)
{
Console.WriteLine("wrong report message received");
return;
}
var id = reply.Pdu().Variables[0].Id;
if (id != Messenger.NotInTimeWindow)
{
var error = id.GetErrorMessage();
Console.WriteLine(error);
return;
}
// according to RFC 3414, send a second request to sync time.
request = new GetNextRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, reply);
reply = request.GetResponse(timeout, receiver);
}
else if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
reply);
}
foreach (Variable v in reply.Pdu().Variables)
{
Console.WriteLine(v);
}
}
catch (SnmpException ex)
{
Console.WriteLine(ex);
}
catch (SocketException ex)
{
Console.WriteLine(ex);
}
}
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 async Task <Variable?> GetV3TsmAsync(IPAddress ip, string oid, int retries, int port, TimeSpan timeout,
X509Certificate2 certificate, TimeSpan connectionTimeout)
{
if (ip == null)
{
throw new ArgumentNullException(nameof(ip));
}
if (string.IsNullOrWhiteSpace(oid))
{
throw new ArgumentNullException(nameof(oid));
}
if (!Regex.IsMatch(oid, @"^(([0-9]+)\.)+[0-9]+$"))
{
throw new ArgumentException(oid, nameof(oid));
}
if (port <= 0)
{
throw new ArgumentOutOfRangeException(nameof(port), port.ToString());
}
if (retries <= 0)
{
throw new ArgumentOutOfRangeException(nameof(retries), retries.ToString());
}
if (timeout <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(timeout), timeout.ToString());
}
if (connectionTimeout <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(connectionTimeout));
}
if (certificate is null)
{
throw new ArgumentNullException(nameof(certificate));
}
var startDate = DateTime.Now;
var snmpType = "GET";
var snmpVersion = $"3 {SecurityModel.Tsm}";
var attempt = 0;
IEnumerable <Variable> reply = new List <Variable>();
while (attempt < retries)
{
try
{
var receiver = new IPEndPoint(ip, port);
var clientEndPoint = ip.AddressFamily == AddressFamily.InterNetwork
? new IPEndPoint(IPAddress.Any, 0) : new IPEndPoint(IPAddress.IPv6Any, 0);
var vList = new List <Variable>()
{
new Variable(new ObjectIdentifier(oid))
};
var chain = new X509Chain();
chain.Build(certificate);
using var client = new Client(clientEndPoint);
client.LoadX509Certificate(chain);
client.SupportedCipherSuites.Add(TCipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA);
var auth = TsmAuthenticationProvider.Instance;
IPrivacyProvider priv = new TsmPrivacyProvider(auth);
var request = new GetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, OctetString.Empty, vList, priv, Messenger.MaxMessageSize);
ISnmpMessage response = await request.GetSecureResponseAsync(connectionTimeout, timeout, receiver, client).ConfigureAwait(false);
if (response is ReportMessage)
{
if (response.Pdu().Variables.Count == 0)
{
throw new Exception("wrong report message received");
}
var id = response.Pdu().Variables[0].Id;
if (id != Messenger.NotInTimeWindow)
{
var error = id.GetErrorMessage();
throw new Exception($"ERROR: {error}");
}
// according to RFC 3414, send a second request to sync time.
var request2 = new GetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, OctetString.Empty, OctetString.Empty, vList, priv, Messenger.MaxMessageSize, response);
response = await request2.GetSecureResponseAsync(connectionTimeout, timeout, receiver, client).ConfigureAwait(false);
}
else if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
reply = response.Pdu().Variables;
break;
}
catch (Exception ex) when(ex is SnmpException || ex is SocketException || ex is OperationCanceledException || ex is System.TimeoutException)
{
if (ex is System.TimeoutException && ex.Message == "Could Not Connect To Server")
{
_Logger.LogInformation($"{ip} - DTLS failed {attempt + 1} time(s)");
}
await _SnmpLog.LogTransactionAsync(startDate, ip.ToString(), oid, null, snmpType, snmpVersion, ex.GetType().ToString(), ex.Message).ConfigureAwait(false);
++attempt;
if (attempt >= retries)
{
throw;
}
}
}
var type = string.Empty;
var data = string.Empty;
foreach (var res in reply)
{
type += res.Data.TypeCode;
data += res.Data.ToString();
}
await _SnmpLog.LogTransactionAsync(startDate, ip.ToString(), oid, null, snmpType, snmpVersion, type, data).ConfigureAwait(false);
return(reply.FirstOrDefault());
}
private bool CommandMatched(ISnmpMessage message)
{
var codeString = message.Pdu().TypeCode.ToString();
return(StringEquals(_command, "*") || StringEquals(_command + "RequestPdu", codeString) || StringEquals(_command + "Pdu", codeString));
}
public async Task <Variable?> GetV3UsmAsync(IPAddress ip, string oid, string community, int retries, int port, TimeSpan timeout,
string authPass, string privPass)
{
if (ip == null)
{
throw new ArgumentNullException(nameof(ip));
}
if (string.IsNullOrWhiteSpace(oid))
{
throw new ArgumentNullException(nameof(oid));
}
if (!Regex.IsMatch(oid, @"^(([0-9]+)\.)+[0-9]+$"))
{
throw new ArgumentException(oid, nameof(oid));
}
if (port <= 0)
{
throw new ArgumentOutOfRangeException(nameof(port), port.ToString());
}
if (retries <= 0)
{
throw new ArgumentOutOfRangeException(nameof(retries), retries.ToString());
}
if (timeout <= TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(timeout), timeout.ToString());
}
if (string.IsNullOrWhiteSpace(authPass))
{
throw new ArgumentNullException(nameof(authPass));
}
if (string.IsNullOrWhiteSpace(privPass))
{
throw new ArgumentNullException(nameof(privPass));
}
var startDate = DateTime.Now;
var snmpType = "GET";
var snmpVersion = $"3 {SecurityModel.Usm}";
var attempt = 0;
IEnumerable <Variable> reply = new List <Variable>();
while (attempt < retries)
{
try
{
var receiver = new IPEndPoint(ip, port);
var clientEndPoint = ip.AddressFamily == AddressFamily.InterNetwork
? new IPEndPoint(IPAddress.Any, 0) : new IPEndPoint(IPAddress.IPv6Any, 0);
var vList = new List <Variable>()
{
new Variable(new ObjectIdentifier(oid))
};
using var cts = new CancellationTokenSource(timeout);
var discovery = Messenger.GetNextDiscovery(SnmpType.GetRequestPdu);
var report = await discovery.GetResponseAsync(receiver).ConfigureAwait(false);
var auth = new SHA1AuthenticationProvider(new OctetString(authPass)); // AuthenticationPassword
var priv = new DESPrivacyProvider(new OctetString(privPass), auth); //PrivacyPassword
var request = new GetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(community), vList, priv, Messenger.MaxMessageSize, report);
ISnmpMessage response = await request.GetResponseAsync(receiver, cts.Token).ConfigureAwait(false);
if (response is ReportMessage)
{
if (response.Pdu().Variables.Count == 0)
{
throw new Exception("wrong report message received");
}
var id = response.Pdu().Variables[0].Id;
if (id != Messenger.NotInTimeWindow)
{
var error = id.GetErrorMessage();
throw new Exception($"ERROR: {error}");
}
}
else if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
reply = response.Pdu().Variables;
break;
}
catch (Exception ex) when(ex is SnmpException || ex is SocketException || ex is OperationCanceledException || ex is System.TimeoutException)
{
if (ex is System.TimeoutException && ex.Message == "Could Not Connect To Server")
{
_Logger.LogInformation($"{ip} - DTLS failed {attempt + 1} time(s)");
}
await _SnmpLog.LogTransactionAsync(startDate, ip.ToString(), oid, community, snmpType, snmpVersion, ex.GetType().ToString(), ex.Message).ConfigureAwait(false);
++attempt;
if (attempt >= retries)
{
throw;
}
}
}
var type = string.Empty;
var data = string.Empty;
foreach (var res in reply)
{
type += res.Data.TypeCode;
data += res.Data.ToString();
}
await _SnmpLog.LogTransactionAsync(startDate, ip.ToString(), oid, community, snmpType, snmpVersion, type, data).ConfigureAwait(false);
return(reply.FirstOrDefault());
}
static void Main(string[] args)
{
string community = "public";
bool showHelp = false;
bool showVersion = false;
VersionCode version = VersionCode.V1;
int timeout = 1000;
int retry = 0;
Levels level = Levels.Reportable;
string user = string.Empty;
string authentication = string.Empty;
string authPhrase = string.Empty;
string privacy = string.Empty;
string privPhrase = string.Empty;
OptionSet p = new OptionSet()
.Add("c:", "Community name, (default is public)", delegate(string v) { if (v != null)
{
community = v;
}
})
.Add("l:", "Security level, (default is noAuthNoPriv)", delegate(string v)
{
if (v.ToUpperInvariant() == "NOAUTHNOPRIV")
{
level = Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHNOPRIV")
{
level = Levels.Authentication | Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHPRIV")
{
level = Levels.Authentication | Levels.Privacy | Levels.Reportable;
}
else
{
throw new ArgumentException("no such security mode: " + v);
}
})
.Add("a:", "Authentication method (MD5 or SHA)", delegate(string v) { authentication = v; })
.Add("A:", "Authentication passphrase", delegate(string v) { authPhrase = v; })
.Add("x:", "Privacy method", delegate(string v) { privacy = v; })
.Add("X:", "Privacy passphrase", delegate(string v) { privPhrase = v; })
.Add("u:", "Security name", delegate(string v) { user = v; })
.Add("h|?|help", "Print this help information.", delegate(string v) { showHelp = v != null; })
.Add("V", "Display version number of this application.", delegate(string v) { showVersion = v != null; })
.Add("t:", "Timeout value (unit is second).", delegate(string v) { timeout = int.Parse(v) * 1000; })
.Add("r:", "Retry count (default is 0)", delegate(string v) { retry = int.Parse(v); })
.Add("v:", "SNMP version (1, 2, and 3 are currently supported)", delegate(string v)
{
switch (int.Parse(v))
{
case 1:
version = VersionCode.V1;
break;
case 2:
version = VersionCode.V2;
break;
case 3:
version = VersionCode.V3;
break;
default:
throw new ArgumentException("no such version: " + v);
}
});
if (args.Length == 0)
{
ShowHelp(p);
return;
}
List <string> extra;
try
{
extra = p.Parse(args);
}
catch (OptionException ex)
{
Console.WriteLine(ex.Message);
return;
}
if (showHelp)
{
ShowHelp(p);
return;
}
if ((extra.Count - 1) % 3 != 0)
{
Console.WriteLine("invalid variable number: " + extra.Count);
return;
}
if (showVersion)
{
Console.WriteLine(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version);
return;
}
IPAddress ip;
bool parsed = IPAddress.TryParse(extra[0], out ip);
if (!parsed)
{
foreach (IPAddress address in
Dns.GetHostAddresses(extra[0]).Where(address => address.AddressFamily == AddressFamily.InterNetwork))
{
ip = address;
break;
}
if (ip == null)
{
Console.WriteLine("invalid host or wrong IP address found: " + extra[0]);
return;
}
}
try
{
List <Variable> vList = new List <Variable>();
for (int i = 1; i < extra.Count; i = i + 3)
{
string type = extra[i + 1];
if (type.Length != 1)
{
Console.WriteLine("invalid type string: " + type);
return;
}
ISnmpData data;
switch (type[0])
{
case 'i':
data = new Integer32(int.Parse(extra[i + 2]));
break;
case 'u':
data = new Gauge32(uint.Parse(extra[i + 2]));
break;
case 't':
data = new TimeTicks(uint.Parse(extra[i + 2]));
break;
case 'a':
data = new IP(IPAddress.Parse(extra[i + 2]));
break;
case 'o':
data = new ObjectIdentifier(extra[i + 2]);
break;
case 'x':
data = new OctetString(ByteTool.Convert(extra[i + 2]));
break;
case 's':
data = new OctetString(extra[i + 2]);
break;
case 'd':
data = new OctetString(ByteTool.ConvertDecimal(extra[i + 2]));
break;
case 'n':
data = new Null();
break;
default:
Console.WriteLine("unknown type string: " + type[0]);
return;
}
Variable test = new Variable(new ObjectIdentifier(extra[i]), data);
vList.Add(test);
}
IPEndPoint receiver = new IPEndPoint(ip, 161);
if (version != VersionCode.V3)
{
foreach (Variable variable in
Messenger.Set(version, receiver, new OctetString(community), vList, timeout))
{
Console.WriteLine(variable);
}
return;
}
if (string.IsNullOrEmpty(user))
{
Console.WriteLine("User name need to be specified for v3.");
return;
}
IAuthenticationProvider auth = (level & Levels.Authentication) == Levels.Authentication
? GetAuthenticationProviderByName(authentication, authPhrase)
: DefaultAuthenticationProvider.Instance;
IPrivacyProvider priv;
if ((level & Levels.Privacy) == Levels.Privacy)
{
priv = new DESPrivacyProvider(new OctetString(privPhrase), auth);
}
else
{
priv = new DefaultPrivacyProvider(auth);
}
Discovery discovery = Messenger.NextDiscovery;
ReportMessage report = discovery.GetResponse(timeout, receiver);
SetRequestMessage request = new SetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, report);
ISnmpMessage response = request.GetResponse(timeout, receiver);
if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
foreach (Variable v in response.Pdu().Variables)
{
Console.WriteLine(v);
}
}
catch (SnmpException ex)
{
Console.WriteLine(ex);
}
catch (SocketException ex)
{
Console.WriteLine(ex);
}
}
public bool SetMessageStr(string objectId, string value, out string result)
{
string output = "";
bool success = false;
switch (VersionCode)
{
case VersionCode.V3:
{
//Discover
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetRequestPdu);
ReportMessage report;
try
{
report = discovery.GetResponse(10000, new IPEndPoint(IpRequestManager, IpRequestPORT));
}
catch (Exception ex)
{
ErrorString = String.Format("Message: {0}\r\nSource: {1}\r\nStackTrace:{2}", ex.Message, ex.Source, ex.StackTrace);
result = output;
return(false);
}
SetRequestMessage request = new SetRequestMessage(
VersionCode.V3,
Messenger.NextMessageId,
Messenger.NextRequestId,
UName,
new List <Variable>
{
new Variable(new ObjectIdentifier(objectId), new OctetString(value, Encoding))
},
Priv,
Messenger.MaxMessageSize,
report);
ISnmpMessage reply = request.GetResponse(60000, new IPEndPoint(IpRequestManager, IpRequestPORT));
if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
ErrorString += "error in response: " + reply;
result = "";
return(false);
}
success = true;
break;
}
default:
{
try
{
IList <Variable> results = Messenger.Set(VersionCode,
new IPEndPoint(IpRequestManager, IpRequestPORT),
UName,
new List <Variable> {
new Variable(new ObjectIdentifier(objectId), new OctetString(value, Encoding))
},
15000);
output = results.Aggregate("", (current, var) => String.Format("{0}\r\nId: {1}\r\nData: {2}", current, var.Id, var.Data));
success = true;
}
catch (Exception ex)
{
ErrorString = String.Format("Message: {0}\r\nSource: {1}\r\nStackTrace:{2}", ex.Message, ex.Source, ex.StackTrace);
//return false;
}
break;
}
}
result = output;
return(success);
}
public IList <KeyValuePair <string, string> > GetMessageKvp(string objectId)
{
IList <KeyValuePair <string, string> > kvpOut = new List <KeyValuePair <string, string> >();
string output = "";
switch (VersionCode)
{
case VersionCode.V3:
{
ISnmpMessage reply = GetMessageV3(objectId);
string Response = "";
if (reply == null)
{
ErrorString = String.Format("{0}\r\nNo response on {1}.",
ErrorString, IpRequestManager);
return(kvpOut);
}
if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
ErrorString = String.Format("{0}\r\nResponse error on {1}:\r\n{2}",
ErrorString, IpRequestManager, reply.Parameters.ToString());
}
output = reply.Parameters.ToString();
break;
}
default:
{
try
{
var result = Messenger.Get(VersionCode,
new IPEndPoint(IpRequestManager, IpRequestPORT),
UName,
new List <Variable> {
new Variable(new ObjectIdentifier(objectId))
},
15000); //"1.3.6.1.2.1.1.1.0"
foreach (Variable var in result)
{
//output = string.Format("{0}\r\n{1}:{2}", output, var.Id, var.Data);
kvpOut.Add(new KeyValuePair <string, string>(var.Id.ToString(), var.Data.ToString()));
}
}
catch (Exception ex)
{
ErrorString = String.Format("Message: {0}\r\nSource: {1}\r\nStackTrace:{2}", ex.Message, ex.Source, ex.StackTrace);
}
break;
}
}
return(kvpOut);
}
public static void Main(string[] args)
{
string community = "public";
bool showHelp = false;
bool showVersion = false;
VersionCode version = VersionCode.V1;
int timeout = 1000;
int retry = 0;
Levels level = Levels.Reportable;
string user = string.Empty;
string authentication = string.Empty;
string authPhrase = string.Empty;
string privacy = string.Empty;
string privPhrase = string.Empty;
OptionSet p = new OptionSet()
.Add("c:", "-c for community name, (default is public)", delegate(string v) { if (v != null)
{
community = v;
}
})
.Add("l:", "-l for security level, (default is noAuthNoPriv)", delegate(string v)
{
if (v.ToUpperInvariant() == "NOAUTHNOPRIV")
{
level = Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHNOPRIV")
{
level = Levels.Authentication | Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHPRIV")
{
level = Levels.Authentication | Levels.Privacy | Levels.Reportable;
}
else
{
throw new ArgumentException("no such security mode: " + v);
}
})
.Add("a:", "-a for authentication method (MD5 or SHA)", delegate(string v) { authentication = v; })
.Add("A:", "-A for authentication passphrase", delegate(string v) { authPhrase = v; })
.Add("x:", "-x for privacy method", delegate(string v) { privacy = v; })
.Add("X:", "-X for privacy passphrase", delegate(string v) { privPhrase = v; })
.Add("u:", "-u for security name", delegate(string v) { user = v; })
.Add("h|?|help", "-h, -?, -help for help.", delegate(string v) { showHelp = v != null; })
.Add("V", "-V to display version number of this application.", delegate(string v) { showVersion = v != null; })
.Add("t:", "-t for timeout value (unit is second).", delegate(string v) { timeout = int.Parse(v) * 1000; })
.Add("r:", "-r for retry count (default is 0)", delegate(string v) { retry = int.Parse(v); })
.Add("v:", "-v for SNMP version (1, 2, and 3 are currently supported)", delegate(string v)
{
switch (int.Parse(v))
{
case 1:
version = VersionCode.V1;
break;
case 2:
version = VersionCode.V2;
break;
case 3:
version = VersionCode.V3;
break;
default:
throw new ArgumentException("no such version: " + v);
}
});
List <string> extra = p.Parse(args);
if (showHelp)
{
ShowHelp();
return;
}
if (showVersion)
{
Console.WriteLine(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version);
return;
}
if (extra.Count < 2)
{
ShowHelp();
return;
}
IPAddress ip;
bool parsed = IPAddress.TryParse(extra[0], out ip);
if (!parsed)
{
foreach (IPAddress address in
Dns.GetHostAddresses(extra[0]).Where(address => address.AddressFamily == AddressFamily.InterNetwork))
{
ip = address;
break;
}
if (ip == null)
{
Console.WriteLine("invalid host or wrong IP address found: " + extra[0]);
return;
}
}
try
{
List <Variable> vList = new List <Variable>();
for (int i = 1; i < extra.Count; i++)
{
Variable test = new Variable(new ObjectIdentifier(extra[i]));
vList.Add(test);
}
IPEndPoint receiver = new IPEndPoint(ip, 161);
if (version != VersionCode.V3)
{
GetNextRequestMessage message = new GetNextRequestMessage(0,
version,
new OctetString(community),
vList);
ISnmpMessage response = message.GetResponse(timeout, receiver);
if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
foreach (Variable variable in response.Pdu().Variables)
{
Console.WriteLine(variable);
}
return;
}
if (string.IsNullOrEmpty(user))
{
Console.WriteLine("User name need to be specified for v3.");
return;
}
IAuthenticationProvider auth = (level & Levels.Authentication) == Levels.Authentication
? GetAuthenticationProviderByName(authentication, authPhrase)
: DefaultAuthenticationProvider.Instance;
IPrivacyProvider priv;
if ((level & Levels.Privacy) == Levels.Privacy)
{
priv = new DESPrivacyProvider(new OctetString(privPhrase), auth);
}
else
{
priv = new DefaultPrivacyProvider(auth);
}
Discovery discovery = Messenger.NextDiscovery;
ReportMessage report = discovery.GetResponse(timeout, receiver);
GetNextRequestMessage request = new GetNextRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, report);
ISnmpMessage reply = request.GetResponse(timeout, receiver);
if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
reply);
}
foreach (Variable v in reply.Pdu().Variables)
{
Console.WriteLine(v);
}
}
catch (SnmpException ex)
{
Console.WriteLine(ex);
}
catch (SocketException ex)
{
Console.WriteLine(ex);
}
}
