Class: RubySMB::SMB1::DataBlock

Inherits:

BinData::Record

• Object
• BinData::Record
• RubySMB::SMB1::DataBlock

Defined in:

lib/ruby_smb/smb1/data_block.rb

Overview

Represents the DataBlock portion of an SMB1 Packet. The DataBlock will always contain a byte_count field that gives the size of the rest of the data block in bytes.

Direct Known Subclasses

Packet::CloseRequest::DataBlock, Packet::CloseResponse::DataBlock, Packet::EchoRequest::DataBlock, Packet::EchoResponse::DataBlock, Packet::LogoffRequest::DataBlock, Packet::LogoffResponse::DataBlock, Packet::NegotiateRequest::DataBlock, Packet::NegotiateResponse::DataBlock, Packet::NegotiateResponseExtended::DataBlock, Packet::NtCreateAndxRequest::DataBlock, Packet::NtCreateAndxResponse::DataBlock, Packet::ReadAndxRequest::DataBlock, Packet::ReadAndxResponse::DataBlock, Packet::SessionSetupLegacyRequest::DataBlock, Packet::SessionSetupLegacyResponse::DataBlock, Packet::SessionSetupRequest::DataBlock, Packet::SessionSetupResponse::DataBlock, Packet::Trans2::DataBlock, Packet::Trans::DataBlock, Packet::TreeConnectRequest::DataBlock, Packet::TreeConnectResponse::DataBlock, Packet::TreeDisconnectRequest::DataBlock, Packet::TreeDisconnectResponse::DataBlock, Packet::WriteAndxRequest::DataBlock, Packet::WriteAndxResponse::DataBlock

Class Method Summary

• .calculate_byte_count ⇒ Integer

  Class method to stub byte count calculation during lazy evaluation.

• .data_fields ⇒ Array<Symbol>

  Returns the name of all fields, other than byte_count, in the DataBlock as symbols.

Instance Method Summary

• #calculate_byte_count ⇒ Integer

  Calculates the size of the other fields in the DataBlock in Bytes.

• #field_enabled?(field_name) ⇒ Boolean

Class Method Details

.calculate_byte_count ⇒ Integer

Class method to stub byte count calculation during lazy evaluation.

Returns:

• (Integer) —

  will always return 0

# File 'lib/ruby_smb/smb1/data_block.rb', line 15

def self.calculate_byte_count
  0
end

.data_fields ⇒ Array<Symbol>

Returns the name of all fields, other than byte_count, in the DataBlock as symbols.

Returns:

• (Array<Symbol>) —

  the names of all other DataBlock fields

# File 'lib/ruby_smb/smb1/data_block.rb', line 23

def self.data_fields
  fields = self.fields.collect(&:name)
  fields.reject { |field| field == :byte_count }
end

Instance Method Details

#calculate_byte_count ⇒ Integer

Calculates the size of the other fields in the DataBlock in Bytes.

Returns:

• (Integer) —

  The size of the DataBlock in Words

# File 'lib/ruby_smb/smb1/data_block.rb', line 32

def calculate_byte_count
  total_count = 0
  self.class.data_fields.each do |field_name|
    next unless field_enabled?(field_name)
    field_value = send(field_name)
    total_count += field_value.do_num_bytes
  end
  total_count
end

#field_enabled?(field_name) ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/ruby_smb/smb1/data_block.rb', line 42

def field_enabled?(field_name)
  send("#{field_name}?".to_sym)
end