Contains information about a SMB_COM_TRANSACTION response from the server After decoding, each instance contains the following attributes: - total_params_count (integer) - total_data_count (integer) - setup_bytes (string) - data_bytes (string) - params_bytes (string)
| 766 | |
| 767 | |
| 768 | class ComTransactionResponse(Payload): |
| 769 | """ |
| 770 | Contains information about a SMB_COM_TRANSACTION response from the server |
| 771 | |
| 772 | After decoding, each instance contains the following attributes: |
| 773 | - total_params_count (integer) |
| 774 | - total_data_count (integer) |
| 775 | - setup_bytes (string) |
| 776 | - data_bytes (string) |
| 777 | - params_bytes (string) |
| 778 | |
| 779 | References: |
| 780 | =========== |
| 781 | - [MS-CIFS]: 2.2.4.33.2 |
| 782 | """ |
| 783 | |
| 784 | PAYLOAD_STRUCT_FORMAT = '<HHHHHHHHHH' |
| 785 | PAYLOAD_STRUCT_SIZE = struct.calcsize(PAYLOAD_STRUCT_FORMAT) |
| 786 | |
| 787 | def decode(self, message): |
| 788 | assert message.command == SMB_COM_TRANSACTION |
| 789 | |
| 790 | if not message.status.hasError: |
| 791 | if len(message.parameters_data) < self.PAYLOAD_STRUCT_SIZE: |
| 792 | raise ProtocolError('Not enough data to decode SMB_COM_TRANSACTION parameters', message.raw_data, message) |
| 793 | |
| 794 | self.total_params_count, self.total_data_count, _, \ |
| 795 | params_bytes_len, params_bytes_offset, params_bytes_displ, \ |
| 796 | data_bytes_len, data_bytes_offset, data_bytes_displ, \ |
| 797 | setup_count = struct.unpack(self.PAYLOAD_STRUCT_FORMAT, message.parameters_data[:self.PAYLOAD_STRUCT_SIZE]) |
| 798 | |
| 799 | if setup_count > 0: |
| 800 | setup_bytes_len = setup_count * 2 |
| 801 | |
| 802 | if len(message.parameters_data) < self.PAYLOAD_STRUCT_SIZE + setup_bytes_len: |
| 803 | raise ProtocolError('Not enough data to decode SMB_COM_TRANSACTION parameters', message.raw_data, message) |
| 804 | |
| 805 | self.setup_bytes = message.parameters_data[self.PAYLOAD_STRUCT_SIZE:self.PAYLOAD_STRUCT_SIZE+setup_bytes_len] |
| 806 | else: |
| 807 | self.setup_bytes = '' |
| 808 | |
| 809 | offset = message.HEADER_STRUCT_SIZE + self.PAYLOAD_STRUCT_SIZE + setup_count * 2 + 2 # constant 2 is for the ByteCount field in the SMB header (i.e. field which indicates number of data bytes after the SMB parameters) |
| 810 | |
| 811 | if params_bytes_len > 0: |
| 812 | self.params_bytes = message.data[params_bytes_offset-offset:params_bytes_offset-offset+params_bytes_len] |
| 813 | else: |
| 814 | self.params_bytes = '' |
| 815 | |
| 816 | if data_bytes_len > 0: |
| 817 | self.data_bytes = message.data[data_bytes_offset-offset:data_bytes_offset-offset+data_bytes_len] |
| 818 | else: |
| 819 | self.data_bytes = '' |
| 820 | |
| 821 | |
| 822 | class ComTransaction2Request(Payload): |