public void TestToTrapMessageChinese()
{
Variable v = new Variable(new ObjectIdentifier(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1001, 21, 0 }),
new OctetString("ол╣Щ", Encoding.Unicode));
List <Variable> vList = new List <Variable>();
vList.Add(v);
TrapV1Pdu pdu = new TrapV1Pdu(new ObjectIdentifier(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1000, 2 }),
new IP("127.0.0.1"),
new Integer32((int)GenericCode.EnterpriseSpecific),
new Integer32(12),
new TimeTicks(16352),
vList);
byte[] bytes = SnmpMessageExtension.PackMessage(VersionCode.V1, new OctetString("public"), pdu).ToBytes();
TrapV1Message message = (TrapV1Message)MessageFactory.ParseMessages(bytes, new UserRegistry())[0];
Assert.AreEqual("127.0.0.1", message.AgentAddress.ToString());
Assert.AreEqual(GenericCode.EnterpriseSpecific, message.Generic);
Assert.AreEqual(12, message.Specific);
Assert.AreEqual(16352, message.TimeStamp);
Assert.AreEqual(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1000, 2 }, message.Enterprise.ToNumerical());
Assert.AreEqual(1, message.Variables.Count);
Assert.AreEqual(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1001, 21, 0 }, message.Variables[0].Id.ToNumerical());
Assert.AreEqual("ол╣Щ", ((OctetString)message.Variables[0].Data).ToString(Encoding.Unicode));
}
public void TestToTrapMessage()
{
Variable v = new Variable(new ObjectIdentifier(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1001, 21, 0 }),
new OctetString("TrapTest"));
List <Variable> vList = new List <Variable> {
v
};
TrapV1Pdu pdu = new TrapV1Pdu(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1000, 2 },
new IP("127.0.0.1"),
new Integer32((int)GenericCode.EnterpriseSpecific),
new Integer32(12),
new TimeTicks(16352),
vList);
byte[] bytes = SnmpMessageExtension.PackMessage(VersionCode.V1, new OctetString("public"), pdu).ToBytes();
TrapV1Message message = (TrapV1Message)MessageFactory.ParseMessages(bytes, new UserRegistry())[0];
Assert.AreEqual("127.0.0.1", message.AgentAddress.ToString());
Assert.AreEqual(GenericCode.EnterpriseSpecific, message.Generic);
Assert.AreEqual(12, message.Specific);
Assert.AreEqual(16352, message.TimeStamp);
Assert.AreEqual(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1000, 2 }, message.Enterprise.ToNumerical());
Assert.AreEqual(1, message.Variables().Count);
Assert.AreEqual(new uint[] { 1, 3, 6, 1, 4, 1, 2162, 1001, 21, 0 }, message.Variables()[0].Id.ToNumerical());
Assert.AreEqual("TrapTest", message.Variables()[0].Data.ToString());
Assert.AreEqual("SNMPv1 TRAP PDU: agent address: 127.0.0.1; time stamp: 16352 (00:02:43.5200000); enterprise: .1.3.6.1.4.1.2162.1000.2; generic: EnterpriseSpecific; specific: 12; varbind count: 1", pdu.ToString());
}
/// <summary>
/// Computes the hash.
/// </summary>
/// <param name="version">The version.</param>
/// <param name="header">The header.</param>
/// <param name="parameters">The parameters.</param>
/// <param name="data">The scope bytes.</param>
/// <param name="privacy">The privacy provider.</param>
/// <returns></returns>
public OctetString ComputeHash(VersionCode version, ISegment header, SecurityParameters parameters, ISnmpData data, IPrivacyProvider privacy)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
if (parameters == null)
{
throw new ArgumentNullException("parameters");
}
if (data == null)
{
throw new ArgumentNullException("data");
}
if (privacy == null)
{
throw new ArgumentNullException("privacy");
}
var key = PasswordToKey(_password, parameters.EngineId.GetRaw());
using (var sha1 = new HMACSHA1(key))
{
var hash = sha1.ComputeHash(SnmpMessageExtension.PackMessage(version, header, parameters, data).ToBytes());
sha1.Clear();
var result = new byte[DigestLength];
Buffer.BlockCopy(hash, 0, result, 0, result.Length);
return(new OctetString(result));
}
}
/// <summary>
/// Computes the hash.
/// </summary>
/// <param name="version">The version.</param>
/// <param name="header">The header.</param>
/// <param name="parameters">The parameters.</param>
/// <param name="scopeBytes">The scope bytes.</param>
/// <param name="privacy">The privacy provider.</param>
/// <returns></returns>
private OctetString ComputeHash(VersionCode version, ISegment header, SecurityParameters parameters, ISnmpData scopeBytes, IPrivacyProvider privacy)
{
if (scopeBytes == null)
{
throw new ArgumentNullException("scopeBytes");
}
byte[] key = PasswordToKey(_password, parameters.EngineId.GetRaw());
using (HMACSHA1 sha1 = new HMACSHA1(key))
{
byte[] hash = sha1.ComputeHash(SnmpMessageExtension.PackMessage(version, header, parameters, scopeBytes, privacy).ToBytes());
sha1.Clear();
byte[] result = new byte[DigestLength];
Array.Copy(hash, result, result.Length);
return(new OctetString(result));
}
}
