public void ComNegotiateRequest(Sequence <string> dialects)
{
Packet_Header responseHeader = new Packet_Header();
DialectRevision selectedDialect = DialectRevision.Smb2Unknown;
NEGOTIATE_Response responsePayload = new NEGOTIATE_Response();
byte[] smb2ClientGssToken;
ModelSmb2Status status = ModelSmb2Status.STATUS_SUCCESS;
try
{
status = (ModelSmb2Status)smb2Client.MultiProtocolNegotiate(dialects.ToArray(), out selectedDialect, out smb2ClientGssToken, out responseHeader, out responsePayload);
if (status != ModelSmb2Status.STATUS_SUCCESS)
{
selectedDialect = DialectRevision.Smb2Unknown;
}
this.NegotiateResponse(status, selectedDialect);
if (selectedDialect == DialectRevision.Smb2Wildcard)
{
messageId = 1;
}
}
catch
{
}
}
/// <summary>
/// This method will send ComNegotiate request before sending a Negotiate request to simulate windows client behaviour.
/// If ComNegotiate failed, the Negotiate request will still be sent.
/// </summary>
public uint MultiProtocolNegotiate(
Smb2Client client,
ushort creditCharge,
ushort creditRequest,
Packet_Header_Flags_Values flags,
ulong messageId,
DialectRevision[] dialects,
SecurityMode_Values securityMode,
Capabilities_Values capabilities,
Guid clientGuid,
out DialectRevision selectedDialect,
out byte[] gssToken,
out Packet_Header responseHeader,
out NEGOTIATE_Response responsePayload)
{
uint status = client.MultiProtocolNegotiate(
new string[] { "SMB 2.002", "SMB 2.???" },
out selectedDialect,
out gssToken,
out responseHeader,
out responsePayload);
if (responseHeader.Status != Smb2Status.STATUS_SUCCESS)
{
LogFailedStatus("ComNegotiate", responseHeader.Status);
}
PreauthIntegrityHashID[] preauthHashAlgs = null;
EncryptionAlgorithm[] encryptionAlgs = null;
// For back compatibility, if dialects contains SMB 3.11, preauthentication integrity context should be present.
if (Array.IndexOf(dialects, DialectRevision.Smb311) >= 0)
{
preauthHashAlgs = new PreauthIntegrityHashID[] { PreauthIntegrityHashID.SHA_512 };
encryptionAlgs = new EncryptionAlgorithm[] {
EncryptionAlgorithm.ENCRYPTION_AES128_GCM,
EncryptionAlgorithm.ENCRYPTION_AES128_CCM
};
}
status = client.Negotiate(
creditCharge,
creditRequest,
flags,
messageId,
dialects,
securityMode,
capabilities,
clientGuid,
out selectedDialect,
out gssToken,
out responseHeader,
out responsePayload,
0,
preauthHashAlgs,
encryptionAlgs);
return(status);
}
/// <summary>
/// This method will send ComNegotiate request before sending a Negotiate request to simulate windows client behaviour.
/// If ComNegotiate failed, the Negotiate request will still be sent.
/// </summary>
public uint MultiProtocolNegotiate(
Smb2Client client,
ushort creditCharge,
ushort creditRequest,
Packet_Header_Flags_Values flags,
ulong messageId,
DialectRevision[] dialects,
SecurityMode_Values securityMode,
Capabilities_Values capabilities,
Guid clientGuid,
out DialectRevision selectedDialect,
out byte[] gssToken,
out Packet_Header responseHeader,
out NEGOTIATE_Response responsePayload)
{
uint status = client.MultiProtocolNegotiate(
new string[] { "SMB 2.002", "SMB 2.???" },
out selectedDialect,
out gssToken,
out responseHeader,
out responsePayload);
if (responseHeader.Status != Smb2Status.STATUS_SUCCESS)
{
LogFailedStatus("ComNegotiate", responseHeader.Status);
}
// If server only supports Smb2002, no further SMB2 negotiate needed
if (selectedDialect == DialectRevision.Smb2002)
{
return status;
}
PreauthIntegrityHashID[] preauthHashAlgs = null;
EncryptionAlgorithm[] encryptionAlgs = null;
// For back compatibility, if dialects contains SMB 3.11, preauthentication integrity context should be present.
if (Array.IndexOf(dialects, DialectRevision.Smb311) >= 0)
{
preauthHashAlgs = new PreauthIntegrityHashID[] { PreauthIntegrityHashID.SHA_512 };
encryptionAlgs = new EncryptionAlgorithm[] {
EncryptionAlgorithm.ENCRYPTION_AES128_GCM,
EncryptionAlgorithm.ENCRYPTION_AES128_CCM };
}
status = client.Negotiate(
creditCharge,
creditRequest,
flags,
messageId,
dialects,
securityMode,
capabilities,
clientGuid,
out selectedDialect,
out gssToken,
out responseHeader,
out responsePayload,
0,
preauthHashAlgs,
encryptionAlgs);
return status;
}
