// Version 2 membership provider class.// Copyright (C) 2009-2010 Lex Li// // Permission is hereby granted, free of charge, to any person obtaining a copy of this// software and associated documentation files (the "Software"), to deal in the Software// without restriction, including without limitation the rights to use, copy, modify, merge,// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons// to whom the Software is furnished to do so, subject to the following conditions://// The above copyright notice and this permission notice shall be included in all copies or// substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER// DEALINGS IN THE SOFTWARE.using System;using GSF.Net.Snmp.Messaging;namespace GSF.Net.Snmp.Pipeline{ /// <summary> /// SNMP version 2 membership provider, who checks community names for security. /// </summary> public sealed class Version2MembershipProvider : IMembershipProvider { private const VersionCode Version = VersionCode.V2; private readonly OctetString _get; private readonly OctetString _set; /// <summary> /// Initializes a new instance of the <see cref="Version2MembershipProvider"/> class. /// </summary> /// <param name="getCommunity">The get community.</param> /// <param name="setCommunity">The set community.</param> public Version2MembershipProvider(OctetString getCommunity, OctetString setCommunity) { _get = getCommunity; _set = setCommunity; } /// <summary> /// Authenticates the request. /// </summary> /// <param name="context">The context.</param> /// <returns></returns> public bool AuthenticateRequest(ISnmpContext context) { if (context == null) { throw new ArgumentNullException(nameof(context)); } ISnmpMessage request = context.Request; if (request.Version != Version) { return false; } SecurityParameters parameters = request.Parameters; if (request.Pdu().TypeCode == SnmpType.SetRequestPdu) { return parameters.UserName == _set; } return parameters.UserName == _get; } }}
// Version 2 membership provider class.
// Copyright (C) 2009-2010 Lex Li
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using GSF.Net.Snmp.Messaging;
namespace GSF.Net.Snmp.Pipeline
{
/// <summary>
/// SNMP version 2 membership provider, who checks community names for security.
/// </summary>
public sealed class Version2MembershipProvider : IMembershipProvider
{
private const VersionCode Version = VersionCode.V2;
private readonly OctetString _get;
private readonly OctetString _set;
/// <summary>
/// Initializes a new instance of the <see cref="Version2MembershipProvider"/> class.
/// </summary>
/// <param name="getCommunity">The get community.</param>
/// <param name="setCommunity">The set community.</param>
public Version2MembershipProvider(OctetString getCommunity, OctetString setCommunity)
{
_get = getCommunity;
_set = setCommunity;
}
/// <summary>
/// Authenticates the request.
/// </summary>
/// <param name="context">The context.</param>
/// <returns></returns>
public bool AuthenticateRequest(ISnmpContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
ISnmpMessage request = context.Request;
if (request.Version != Version)
{
return false;
}
SecurityParameters parameters = request.Parameters;
if (request.Pdu().TypeCode == SnmpType.SetRequestPdu)
{
return parameters.UserName == _set;
}
return parameters.UserName == _get;
}
}
}