Module: RubySMB::Server::ServerClient::SessionSetup

Included in:
RubySMB::Server::ServerClient
Defined in:
lib/ruby_smb/server/server_client/session_setup.rb

Instance Method Summary collapse

Instance Method Details

#do_logoff_andx_smb1(request, session) ⇒ Object 



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# File 'lib/ruby_smb/server/server_client/session_setup.rb', line 46

def do_logoff_andx_smb1(request, session)
  # see: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-cifs/00fc0299-496c-4330-9089-67358994f272
  @session_table.delete(request.smb_header.uid)
  session.logoff!

  response = SMB1::Packet::LogoffResponse.new
  response
end

#do_logoff_smb2(request, session) ⇒ Object 



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# File 'lib/ruby_smb/server/server_client/session_setup.rb', line 98

def do_logoff_smb2(request, session)
  # see: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-smb2/a6fbc502-75a5-42ef-a88c-c67b44817850
  @session_table.delete(session.id)
  session.logoff!

  response = SMB2::Packet::LogoffResponse.new
  response
end

#do_session_setup_andx_smb1(request, session) ⇒ Object Also known as: do_session_setup_smb1 



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# File 'lib/ruby_smb/server/server_client/session_setup.rb', line 5

def do_session_setup_andx_smb1(request, session)
  session_id = request.smb_header.uid
  if session_id == 0
    session_id = rand(1..0x10000)
    session = @session_table[session_id] = Server::Session.new(session_id)
  else
    session = @session_table[session_id]
    if session.nil?
      response = SMB1::Packet::EmptyPacket.new
      response.smb_header.nt_status = SMBError::STATUS_SMB_BAD_UID
      return response
    end
  end

  gss_result = process_gss(request.data_block.security_blob)
  return if gss_result.nil?

  response = SMB1::Packet::SessionSetupResponse.new
  response.smb_header.pid_low = request.smb_header.pid_low
  response.smb_header.uid = session_id
  response.smb_header.mid = request.smb_header.mid
  response.smb_header.nt_status = gss_result.nt_status.value
  response.smb_header.flags.reply = true
  response.smb_header.flags2.unicode = true
  response.smb_header.flags2.extended_security = true
  unless gss_result.buffer.nil?
    response.parameter_block.security_blob_length = gss_result.buffer.length
    response.data_block.security_blob = gss_result.buffer
  end

  if gss_result.nt_status == WindowsError::NTStatus::STATUS_SUCCESS
    session.state = :valid
    session.user_id = gss_result.identity
    session.key = @gss_authenticator.session_key
  end

  response
end

#do_session_setup_smb2(request, session) ⇒ Object 



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# File 'lib/ruby_smb/server/server_client/session_setup.rb', line 55

def do_session_setup_smb2(request, session)
  session_id = request.smb2_header.session_id
  if session_id == 0
    session_id = rand(1..0xfffffffe)
    session = @session_table[session_id] = Session.new(session_id)
  else
    session = @session_table[session_id]
    if session.nil?
      response = SMB2::Packet::ErrorPacket.new
      response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_USER_SESSION_DELETED
      return response
    end
  end

  gss_result = process_gss(request.buffer)
  return if gss_result.nil?

  response = SMB2::Packet::SessionSetupResponse.new
  response.smb2_header.nt_status = gss_result.nt_status.value
  response.smb2_header.credits = 1
  response.smb2_header.message_id = request.smb2_header.message_id
  response.smb2_header.session_id = session_id
  response.buffer = gss_result.buffer

  update_preauth_hash(request) if @dialect == '0x0311'
  if gss_result.nt_status == WindowsError::NTStatus::STATUS_SUCCESS
    session.state = :valid
    session.user_id = gss_result.identity
    session.is_guest = !!gss_result.is_guest
    session.key = @gss_authenticator.session_key
    session.signing_required = request.security_mode.signing_required == 1 || (!session.is_guest && !session.is_anonymous)

    response.smb2_header.credits = 32
    @cipher_id = 0 if session.is_anonymous || session.is_guest # disable encryption for anonymous users and guest users which have a null session key
    response.session_flags.encrypt_data = 1 unless @cipher_id == 0
    response.session_flags.guest = session.is_guest
  elsif gss_result.nt_status == WindowsError::NTStatus::STATUS_MORE_PROCESSING_REQUIRED && @dialect == '0x0311'
    update_preauth_hash(response)
  end

  response
end