/// <summary>
/// Initializes a new instance of the <see cref="SnmpContextBase"/> class.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="sender">The sender.</param>
/// <param name="users">The users.</param>
/// <param name="group">The engine core group.</param>
/// <param name="binding">The binding.</param>
protected SnmpContextBase(ISnmpMessage request, IPEndPoint sender, EngineUserRegistry users, EngineGroup group, IListenerBinding binding)
{
Request = request;
Binding = binding;
Users = users;
Sender = sender;
CreatedTime = DateTime.Now;
Group = group;
}
/// <summary>
/// Creates the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="sender">The sender.</param>
/// <param name="users">The users.</param>
/// <param name="group">The engine group.</param>
/// <param name="binding">The binding.</param>
/// <returns></returns>
public static ISnmpContext Create(ISnmpMessage request, IPEndPoint sender, EngineUserRegistry users, EngineGroup group, IListenerBinding binding)
{
if (request.Version == VersionCode.V3)
{
return(new SecureSnmpContext(request, sender, users, group, binding));
}
return(new NormalSnmpContext(request, sender, users, binding));
}
public static void Main(string[] args)
{
if (args.Length != 0)
{
return;
}
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(
new OctetString("authen"),
new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication"))));
if (DESPrivacyProvider.IsSupported)
{
users.Add(
new OctetString("privacy"),
new DESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
// for snmpsendtrap testing
users.Add(new OctetString("trap"),
new DESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication")))
{
EngineIds = new List <OctetString> {
new OctetString(ByteTool.Convert("80001F8880E9630000D61FF449"))
}
});
}
else
{
Console.WriteLine("DES privacy is not supported by .NET Core natively. Switched to BouncyCastle implementation.");
users.Add(
new OctetString("privacy"),
new Samples.BouncyCastle.BouncyCastleDESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
// for snmpsendtrap testing
users.Add(new OctetString("trap"),
new Samples.BouncyCastle.BouncyCastleDESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication")))
{
EngineIds = new List <OctetString> {
new OctetString(ByteTool.Convert("80001F8880E9630000D61FF449"))
}
});
}
if (AESPrivacyProviderBase.IsSupported)
{
users.Add(new OctetString("aes"), new AESPrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes192"), new AES192PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes256"), new AES256PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
// for snmpsendtrap testing
users.Add(new OctetString("trapAES"),
new AESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication")))
{
EngineIds = new List <OctetString> {
new OctetString(ByteTool.Convert("80001F8880E9630000D61FF449"))
}
});
}
else
{
Console.WriteLine("AES privacy is not supported by .NET Core natively. Switched to BouncyCastle implementation.");
users.Add(new OctetString("aes"), new Samples.BouncyCastle.BouncyCastleAESPrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes192"), new Samples.BouncyCastle.BouncyCastleAES192PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes256"), new Samples.BouncyCastle.BouncyCastleAES256PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
// for snmpsendtrap testing
users.Add(new OctetString("trapAES"),
new Samples.BouncyCastle.BouncyCastleAESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication")))
{
EngineIds = new List <OctetString> {
new OctetString(ByteTool.Convert("80001F8880E9630000D61FF449"))
}
});
}
var trapv1 = new TrapV1MessageHandler();
trapv1.MessageReceived += WatcherTrapV1Received;
var trapv1Mapping = new HandlerMapping("v1", "TRAPV1", trapv1);
var trapv2 = new TrapV2MessageHandler();
trapv2.MessageReceived += WatcherTrapV2Received;
var trapv2Mapping = new HandlerMapping("v2,v3", "TRAPV2", trapv2);
var inform = new InformRequestMessageHandler();
inform.MessageReceived += WatcherInformRequestReceived;
var informMapping = new HandlerMapping("v2,v3", "INFORM", inform);
var store = new ObjectStore();
var v1 = new Version1MembershipProvider(new OctetString("public"), new OctetString("public"));
var v2 = new Version2MembershipProvider(new OctetString("public"), new OctetString("public"));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[] { trapv1Mapping, trapv2Mapping, informMapping });
var pipelineFactory = new SnmpApplicationFactory(store, membership, handlerFactory);
using (var engine = new SnmpEngine(pipelineFactory, new Listener {
Users = users
}, new EngineGroup()))
{
engine.Listener.AddBinding(new IPEndPoint(IPAddress.Any, 162));
engine.Listener.ExceptionRaised += (sender, e) => Console.WriteLine($"Exception catched: {e.Exception}");
engine.Start();
Console.WriteLine("#SNMP is available at https://sharpsnmp.com");
Console.WriteLine("Press any key to stop . . . ");
Console.Read();
engine.Stop();
}
}
public MainForm()
{
// TODO: this is a hack. review it later.
var store = new ObjectStore();
store.Add(new SysDescr());
store.Add(new SysObjectId());
store.Add(new SysUpTime());
store.Add(new SysContact());
store.Add(new SysName());
store.Add(new SysLocation());
store.Add(new SysServices());
store.Add(new SysORLastChange());
store.Add(new SysORTable());
store.Add(new IfNumber());
store.Add(new IfTable());
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(new OctetString("authen"), new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication"))));
if (DESPrivacyProvider.IsSupported)
{
users.Add(new OctetString("privacy"), new DESPrivacyProvider(new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
}
if (AESPrivacyProviderBase.IsSupported)
{
users.Add(new OctetString("aes"), new AESPrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes192"), new AES192PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes256"), new AES256PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
}
var getv1 = new GetV1MessageHandler();
var getv1Mapping = new HandlerMapping("v1", "GET", getv1);
var getv23 = new GetMessageHandler();
var getv23Mapping = new HandlerMapping("v2,v3", "GET", getv23);
var setv1 = new SetV1MessageHandler();
var setv1Mapping = new HandlerMapping("v1", "SET", setv1);
var setv23 = new SetMessageHandler();
var setv23Mapping = new HandlerMapping("v2,v3", "SET", setv23);
var getnextv1 = new GetNextV1MessageHandler();
var getnextv1Mapping = new HandlerMapping("v1", "GETNEXT", getnextv1);
var getnextv23 = new GetNextMessageHandler();
var getnextv23Mapping = new HandlerMapping("v2,v3", "GETNEXT", getnextv23);
var getbulk = new GetBulkMessageHandler();
var getbulkMapping = new HandlerMapping("v2,v3", "GETBULK", getbulk);
var v1 = new Version1MembershipProvider(new OctetString("public"), new OctetString("public"));
var v2 = new Version2MembershipProvider(new OctetString("public"), new OctetString("public"));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[]
{
getv1Mapping,
getv23Mapping,
setv1Mapping,
setv23Mapping,
getnextv1Mapping,
getnextv23Mapping,
getbulkMapping
});
var pipelineFactory = new SnmpApplicationFactory(new RollingLogger(), store, membership, handlerFactory);
_engine = new SnmpEngine(pipelineFactory, new Listener {
Users = users
}, new EngineGroup());
_engine.ExceptionRaised += (sender, e) => MessageBox.Show(e.Exception.ToString());
InitializeComponent();
if (PlatformSupport.Platform == PlatformType.Windows)
{
// FIXME: work around a Mono WinForms issue.
Icon = Properties.Resources.network_server;
}
toolStripButton1.Image = Properties.Resources.media_playback_start;
tstxtPort.Text = @"161";
tscbIP.Items.Add(StrAllUnassigned);
foreach (IPAddress address in Dns.GetHostEntry(string.Empty).AddressList.Where(address => !address.IsIPv6LinkLocal))
{
tscbIP.Items.Add(address);
}
tscbIP.SelectedIndex = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="NormalSnmpContext"/> class.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="sender">The sender.</param>
/// <param name="users">The users.</param>
/// <param name="binding">The binding.</param>
public NormalSnmpContext(ISnmpMessage request, IPEndPoint sender, EngineUserRegistry users, IListenerBinding binding)
: base(request, sender, users, null, binding)
{
}
private const int MaxTimeout = 5 * 60 * 1000; // 5 minutes
private SnmpEngine CreateEngine(bool timeout = false, bool max255chars = false)
{
// TODO: this is a hack. review it later.
var store = new ObjectStore();
store.Add(new SysDescr());
store.Add(new SysObjectId());
store.Add(new SysUpTime());
store.Add(new SysContact());
store.Add(new SysName());
store.Add(new SysLocation());
store.Add(new SysServices());
store.Add(new SysORLastChange());
store.Add(new SysORTable());
store.Add(new IfNumber());
store.Add(new IfTable());
if (timeout)
{
store.Add(new TimeoutObject());
}
if (max255chars)
{
store.Add(new Max255CharsObject());
}
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(new OctetString("authen"), new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication"))));
if (DESPrivacyProvider.IsSupported)
{
users.Add(new OctetString("privacy"), new DESPrivacyProvider(new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
}
var getv1 = new GetV1MessageHandler();
var getv1Mapping = new HandlerMapping("v1", "GET", getv1);
var getv23 = new GetMessageHandler();
var getv23Mapping = new HandlerMapping("v2,v3", "GET", getv23);
var setv1 = new SetV1MessageHandler();
var setv1Mapping = new HandlerMapping("v1", "SET", setv1);
var setv23 = new SetMessageHandler();
var setv23Mapping = new HandlerMapping("v2,v3", "SET", setv23);
var getnextv1 = new GetNextV1MessageHandler();
var getnextv1Mapping = new HandlerMapping("v1", "GETNEXT", getnextv1);
var getnextv23 = new GetNextMessageHandler();
var getnextv23Mapping = new HandlerMapping("v2,v3", "GETNEXT", getnextv23);
var getbulk = new GetBulkMessageHandler();
var getbulkMapping = new HandlerMapping("v2,v3", "GETBULK", getbulk);
var v1 = new Version1MembershipProvider(new OctetString(communityPublic), new OctetString(communityPublic));
var v2 = new Version2MembershipProvider(new OctetString(communityPublic), new OctetString(communityPublic));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[]
{
getv1Mapping,
getv23Mapping,
setv1Mapping,
setv23Mapping,
getnextv1Mapping,
getnextv23Mapping,
getbulkMapping
});
var pipelineFactory = new SnmpApplicationFactory(store, membership, handlerFactory);
var listener = new Listener {
Users = users
};
listener.ExceptionRaised += (sender, e) => { Assert.True(false, "unexpected exception"); };
return(new SnmpEngine(pipelineFactory, listener, new EngineGroup()));
}
/// <summary>
/// Initializes a new instance of the <see cref="ListenerBinding"/> class.
/// </summary>
/// <param name="users">The users.</param>
/// <param name="endpoint">The endpoint.</param>
public ListenerBinding(EngineUserRegistry users, IPEndPoint endpoint)
{
_users = users;
Endpoint = endpoint;
}
public static void Main(string[] args)
{
if (args.Length != 0)
{
return;
}
var store = new ObjectStore();
store.Add(new SysDescr());
store.Add(new SysObjectId());
store.Add(new SysUpTime());
store.Add(new SysContact());
store.Add(new SysName());
store.Add(new SysLocation());
store.Add(new SysServices());
store.Add(new SysORLastChange());
store.Add(new SysORTable());
store.Add(new IfNumber());
store.Add(new IfTable());
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(new OctetString("authen"), new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication"))));
if (DESPrivacyProvider.IsSupported)
{
users.Add(new OctetString("privacy"), new DESPrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
}
if (AESPrivacyProviderBase.IsSupported)
{
users.Add(new OctetString("aes"), new AESPrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes192"), new AES192PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
users.Add(new OctetString("aes256"), new AES256PrivacyProvider(new OctetString("privacyphrase"), new MD5AuthenticationProvider(new OctetString("authentication"))));
}
var getv1 = new GetV1MessageHandler();
var getv1Mapping = new HandlerMapping("v1", "GET", getv1);
var getv23 = new GetMessageHandler();
var getv23Mapping = new HandlerMapping("v2,v3", "GET", getv23);
var setv1 = new SetV1MessageHandler();
var setv1Mapping = new HandlerMapping("v1", "SET", setv1);
var setv23 = new SetMessageHandler();
var setv23Mapping = new HandlerMapping("v2,v3", "SET", setv23);
var getnextv1 = new GetNextV1MessageHandler();
var getnextv1Mapping = new HandlerMapping("v1", "GETNEXT", getnextv1);
var getnextv23 = new GetNextMessageHandler();
var getnextv23Mapping = new HandlerMapping("v2,v3", "GETNEXT", getnextv23);
var getbulk = new GetBulkMessageHandler();
var getbulkMapping = new HandlerMapping("v2,v3", "GETBULK", getbulk);
var v1 = new Version1MembershipProvider(new OctetString("public"), new OctetString("public"));
var v2 = new Version2MembershipProvider(new OctetString("public"), new OctetString("public"));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[]
{
getv1Mapping,
getv23Mapping,
setv1Mapping,
setv23Mapping,
getnextv1Mapping,
getnextv23Mapping,
getbulkMapping
});
var pipelineFactory = new SnmpApplicationFactory(store, membership, handlerFactory);
using (var engine = new SnmpEngine(pipelineFactory, new Listener {
Users = users
}, new EngineGroup()))
{
engine.Listener.AddBinding(new IPEndPoint(IPAddress.Any, 161));
engine.Listener.ExceptionRaised += Engine_ExceptionRaised;
engine.Listener.MessageReceived += RequestReceived;
engine.Start();
Console.WriteLine("#SNMP is available at https://sharpsnmp.com");
Console.WriteLine("Press any key to stop . . . ");
Console.Read();
engine.Stop();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SecureSnmpContext"/> class.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="sender">The sender.</param>
/// <param name="users">The users.</param>
/// <param name="group">The engine core group.</param>
/// <param name="binding">The binding.</param>
public SecureSnmpContext(ISnmpMessage request, IPEndPoint sender, EngineUserRegistry users, EngineGroup group, IListenerBinding binding)
: base(request, sender, users, group, binding)
{
}
public async Task TestTrapV2HandlerWithV3Message()
{
var manualEvent = new ManualResetEventSlim();
// TODO: this is a hack. review it later.
var engineId = new OctetString(ByteTool.Convert("80001F8880E9630000D61FF449"));
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(new OctetString("authen"),
new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication")))
{
EngineIds = new[] { engineId }
});
if (DESPrivacyProvider.IsSupported)
{
users.Add(new OctetString("privacy"), new DESPrivacyProvider(new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
}
var count = 0;
var trapv1 = new TrapV1MessageHandler();
var trapv1Mapping = new HandlerMapping("v1", "TRAPV1", trapv1);
var trapv2 = new TrapV2MessageHandler();
trapv2.MessageReceived += (sender, args) =>
{
count++;
manualEvent.Set();
};
var trapv2Mapping = new HandlerMapping("v2,v3", "TRAPV2", trapv2);
var inform = new InformRequestMessageHandler();
var informMapping = new HandlerMapping("v2,v3", "INFORM", inform);
var store = new ObjectStore();
var v1 = new Version1MembershipProvider(new OctetString("public"), new OctetString("public"));
var v2 = new Version2MembershipProvider(new OctetString("public"), new OctetString("public"));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[] { trapv1Mapping, trapv2Mapping, informMapping });
var pipelineFactory = new SnmpApplicationFactory(store, membership, handlerFactory);
var engine = new SnmpEngine(pipelineFactory, new Listener {
Users = users
}, new EngineGroup());
var daemonEndPoint = new IPEndPoint(IPAddress.Loopback, port.NextId);
engine.Listener.AddBinding(daemonEndPoint);
engine.Start();
try
{
var privacy =
new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication")));
var trap = new TrapV2Message(
VersionCode.V3,
1004947569,
234419641,
new OctetString("authen"),
new ObjectIdentifier("1.3.6"),
0,
new List <Variable>(),
privacy,
0x10000,
engineId,
0,
0);
await trap.SendAsync(daemonEndPoint);
manualEvent.Wait();
Assert.Equal(1, count);
}
finally
{
if (SnmpMessageExtension.IsRunningOnWindows)
{
engine.Stop();
}
}
}
public async Task TestInformV2HandlerWithV3MessageDES()
{
var manualEvent = new ManualResetEventSlim();
// TODO: this is a hack. review it later.
var users = new EngineUserRegistry();
users.Add(new OctetString("neither"), DefaultPrivacyProvider.DefaultPair);
users.Add(new OctetString("authen"),
new DefaultPrivacyProvider(new MD5AuthenticationProvider(new OctetString("authentication"))));
if (DESPrivacyProvider.IsSupported)
{
users.Add(
new OctetString("privacy"),
new DESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
}
else
{
users.Add(
new OctetString("privacy"),
new BouncyCastle.BouncyCastleDESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))));
}
var count = 0;
var trapv1 = new TrapV1MessageHandler();
var trapv1Mapping = new HandlerMapping("v1", "TRAPV1", trapv1);
var trapv2 = new TrapV2MessageHandler();
var trapv2Mapping = new HandlerMapping("v2,v3", "TRAPV2", trapv2);
var inform = new InformRequestMessageHandler();
inform.MessageReceived += (sender, args) =>
{
count++;
manualEvent.Set();
};
var informMapping = new HandlerMapping("v2,v3", "INFORM", inform);
var store = new ObjectStore();
var v1 = new Version1MembershipProvider(new OctetString("public"), new OctetString("public"));
var v2 = new Version2MembershipProvider(new OctetString("public"), new OctetString("public"));
var v3 = new Version3MembershipProvider();
var membership = new ComposedMembershipProvider(new IMembershipProvider[] { v1, v2, v3 });
var handlerFactory = new MessageHandlerFactory(new[] { trapv1Mapping, trapv2Mapping, informMapping });
var pipelineFactory = new SnmpApplicationFactory(store, membership, handlerFactory);
var engine = new SnmpEngine(pipelineFactory, new Listener {
Users = users
}, new EngineGroup());
var daemonEndPoint = new IPEndPoint(IPAddress.Loopback, port.NextId);
engine.Listener.AddBinding(daemonEndPoint);
engine.Listener.ExceptionRaised += (sender, e) => { Assert.True(false, "unhandled exception"); };
engine.Listener.MessageReceived += (sender, e) => { Console.WriteLine(e.Message); };
engine.Start();
try
{
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.InformRequestPdu);
ReportMessage report = discovery.GetResponse(2000, daemonEndPoint);
await Messenger.SendInformAsync(1,
VersionCode.V3,
daemonEndPoint,
new OctetString("privacy"),
OctetString.Empty,
new ObjectIdentifier("1.3.6.1"),
500,
new List <Variable>(),
DESPrivacyProvider.IsSupported
?(IPrivacyProvider) new DESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication")))
: new BouncyCastle.BouncyCastleDESPrivacyProvider(
new OctetString("privacyphrase"),
new MD5AuthenticationProvider(new OctetString("authentication"))),
report);
manualEvent.Wait();
Assert.Equal(1, count);
}
finally
{
if (SnmpMessageExtension.IsRunningOnWindows)
{
engine.Stop();
}
}
}