#!/usr/bin/env python
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import io
import unittest

from common import MacAddress, MacAddressType
import mac802154

longaddrs = bytearray([0x61, 0xcc, 0x00, 0xce, 0xfa])
shortaddrs = bytearray([0x61, 0x88, 0x00, 0xce, 0xfa])
longshortaddrs = bytearray([0x61, 0xc8, 0x00, 0xce, 0xfa])
shortlongaddrs = bytearray([0x61, 0x8c, 0x00, 0xce, 0xfa])


class TestMacParser(unittest.TestCase):

    def test_should_parse_ack_frame(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x12, 0x00, 0x12, 0x34, 0x56])))

        self.assertEqual(mac802154.MacHeader.FrameType.ACK, frame.header.frame_type)
        self.assertEqual(True, frame.header.frame_pending)
        self.assertEqual(False, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x12, frame.header.seq)
        self.assertEqual(bytearray([0x34, 0x56]), frame.header.fcs)
        self.assertEqual(None, frame.payload)

    def test_should_parse_data_frame_with_short_addresses(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x61, 0x88, 0x34, 0xce, 0xfa,
                                          0xad, 0xde, 0xef, 0xbe, 0x12, 0x34, 0xfe, 0xdc])))

        self.assertEqual(mac802154.MacHeader.FrameType.DATA, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x34, frame.header.seq)
        self.assertEqual(bytearray([0xfe, 0xdc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(0xdead, frame.header.dest_address.rloc)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(0xbeef, frame.header.src_address.rloc)

        self.assertEqual(bytearray([0x12, 0x34]), frame.payload.data)

    def test_should_parse_data_frame_with_extended_addresses(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x61, 0xcc,
                                          0x56,
                                          0xce, 0xfa,
                                          0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef,
                                          0x0b, 0xad, 0xf0, 0x0d, 0xba, 0xd0, 0xd0, 0x0d,
                                          0x12, 0x34,
                                          0xfe, 0xdc])))

        self.assertEqual(mac802154.MacHeader.FrameType.DATA, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x56, frame.header.seq)
        self.assertEqual(bytearray([0xfe, 0xdc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(bytearray(reversed([0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef])),
                         frame.header.dest_address.mac_address)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(bytearray(reversed([0x0b, 0xad, 0xf0, 0x0d, 0xba, 0xd0, 0xd0, 0x0d])),
                         frame.header.src_address.mac_address)

        self.assertEqual(bytearray([0x12, 0x34]), frame.payload.data)

    def test_should_parse_data_frame_with_short_and_extended_addresses(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x61, 0xc8,
                                          0x56,
                                          0xce, 0xfa,
                                          0xad, 0xde,
                                          0x0b, 0xad, 0xf0, 0x0d, 0xba, 0xd0, 0xd0, 0x0d,
                                          0x12, 0x34,
                                          0xfe, 0xdc])))

        self.assertEqual(mac802154.MacHeader.FrameType.DATA, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x56, frame.header.seq)
        self.assertEqual(bytearray([0xfe, 0xdc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(0xdead, frame.header.dest_address.rloc)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(bytearray(reversed([0x0b, 0xad, 0xf0, 0x0d, 0xba, 0xd0, 0xd0, 0x0d])),
                         frame.header.src_address.mac_address)

        self.assertEqual(bytearray([0x12, 0x34]), frame.payload.data)

    def test_should_parse_data_frame_with_extended_and_short_addresses(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x61, 0x8c,
                                          0x56,
                                          0xce, 0xfa,
                                          0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef,
                                          0x0d, 0xf0,
                                          0x12, 0x34,
                                          0xfe, 0xdc])))

        self.assertEqual(mac802154.MacHeader.FrameType.DATA, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x56, frame.header.seq)
        self.assertEqual(bytearray([0xfe, 0xdc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(bytearray(reversed([0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef])),
                         frame.header.dest_address.mac_address)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(0xf00d, frame.header.src_address.rloc)

        self.assertEqual(bytearray([0x12, 0x34]), frame.payload.data)

    def test_should_parse_data_request_command(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x63, 0x88,
                                          0x78,
                                          0xce, 0xfa,
                                          0xad, 0xde,
                                          0x0d, 0xf0,
                                          0x04,
                                          0xfe, 0xdc])))

        self.assertEqual(mac802154.MacHeader.FrameType.COMMAND, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(0, frame.header.frame_version)
        self.assertEqual(0x78, frame.header.seq)
        self.assertEqual(bytearray([0xfe, 0xdc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(0xdead, frame.header.dest_address.rloc)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(0xf00d, frame.header.src_address.rloc)

        self.assertEqual(bytearray([]), frame.payload.data)

    def test_should_decrypt_data_frame(self):

        mac802154.DeviceDescriptors.add(0x2001, MacAddress(bytearray([0x16, 0x6e, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x07]),
                                                           MacAddressType.LONG))

        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x69, 0x98, 0x68,  # FC, seq
                                          0xce, 0xfa,       # Pan Id
                                          0x00, 0x20,       # Dst addr
                                          0x01, 0x20,       # Src addr
                                          0x0d, 0x00, 0x00, 0x00, 0x00, 0x01,             # Aux Security Header
                                          0xb5, 0x5a, 0x0d, 0x8e, 0x18, 0x5c, 0xb1, 0x06,  # Payload
                                          0xc4, 0x6f, 0x7d, 0x6b, 0xb5, 0x4a, 0x87, 0x14,
                                          0xae, 0xdd, 0x8e, 0xb7, 0x37, 0x62, 0x27, 0x48,
                                          0xc9, 0x53, 0x0c, 0x44, 0x31, 0x59, 0x8b, 0xa2,
                                          0x83, 0x59, 0xa1, 0x43,
                                          0x74, 0xe0, 0x2a, 0xf6,  # MIC (valid)
                                          0x99, 0xfc])))           # FCS (valid)

        self.assertEqual(mac802154.MacHeader.FrameType.DATA, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(1, frame.header.frame_version)
        self.assertEqual(0x68, frame.header.seq)
        self.assertEqual(bytearray([0x99, 0xfc]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(0x2000, frame.header.dest_address.rloc)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(0x2001, frame.header.src_address.rloc)

        self.assertEqual(0, frame.header.aux_sec_header.frame_counter)
        self.assertEqual(5, frame.header.aux_sec_header.security_level)

        self.assertEqual(bytes(bytearray([0x7c, 0x77, 0x80, 0xf0, 0x4d, 0x4d, 0x4d, 0x4d,
                                          0xe0, 0x04, 0x44, 0x02, 0x44, 0x66, 0x13, 0x5f,
                                          0x22, 0x80, 0xb1, 0x61, 0x02, 0x61, 0x73, 0x11,
                                          0x2a, 0xff, 0x01, 0x08, 0x16, 0x6e, 0x0a, 0x00,
                                          0x00, 0x00, 0x00, 0x07])), frame.payload.data)

    def test_should_decrypt_command_frame(self):
        frame = mac802154.MacFrame()
        frame.parse(io.BytesIO(bytearray([0x6b, 0xdc, 0xce, 0xce, 0xfa, 0x02, 0x00, 0x00,
                                          0x00, 0x00, 0x0a, 0x6e, 0x16, 0x03, 0x00, 0x00,
                                          0x00, 0x00, 0x0a, 0x6e, 0x16, 0x0d, 0x00, 0x00,
                                          0x00, 0x00, 0x01, 0x04, 0x2d, 0xbc, 0x12, 0xbe,
                                          0x0a, 0x4f])))

        self.assertEqual(mac802154.MacHeader.FrameType.COMMAND, frame.header.frame_type)
        self.assertEqual(False, frame.header.frame_pending)
        self.assertEqual(True, frame.header.ack_request)
        self.assertEqual(1, frame.header.frame_version)
        self.assertEqual(206, frame.header.seq)
        self.assertEqual(bytearray([0x0a, 0x4f]), frame.header.fcs)
        self.assertEqual(0xface, frame.header.dest_pan_id)
        self.assertEqual(bytearray([0x16, 0x6e, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x02]),
                         frame.header.dest_address.mac_address)
        self.assertEqual(0xface, frame.header.src_pan_id)
        self.assertEqual(bytearray([0x16, 0x6e, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x03]),
                         frame.header.src_address.mac_address)

        self.assertEqual(0, frame.header.aux_sec_header.frame_counter)
        self.assertEqual(5, frame.header.aux_sec_header.security_level)


if __name__ == "__main__":
    unittest.main()