from enum import test
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% LLDP test campaign
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#
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# execute test:
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# > test/run_tests -P "load_contrib('lldp')" -t scapy/contrib/lldp.uts
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#
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+ Basic layer handling
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= build basic LLDP frames
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frm = Ether(src='01:01:01:01:01:01', dst=LLDP_NEAREST_BRIDGE_MAC)/ \
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LLDPDUChassisID(subtype=LLDPDUChassisID.SUBTYPE_MAC_ADDRESS, id=b'\x06\x05\x04\x03\x02\x01') / \
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LLDPDUPortID(subtype=LLDPDUPortID.SUBTYPE_MAC_ADDRESS, id=b'\x01\x02\x03\x04\x05\x06')/\
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LLDPDUTimeToLive()/\
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LLDPDUSystemName(system_name='mate')/\
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LLDPDUSystemCapabilities(telephone_available=1, router_available=1, telephone_enabled=1)/\
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LLDPDUManagementAddress(
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management_address_subtype=LLDPDUManagementAddress.SUBTYPE_MANAGEMENT_ADDRESS_IPV4,
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management_address='1.2.3.4',
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interface_numbering_subtype=LLDPDUManagementAddress.SUBTYPE_INTERFACE_NUMBER_IF_INDEX,
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interface_number=23,
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object_id='abcd') / \
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LLDPDUEndOfLLDPDU()
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frm = frm.build()
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frm = Ether(frm)
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= add padding if required
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conf.contribs['LLDP'].strict_mode_disable()
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frm = Ether(src='01:01:01:01:01:01', dst=LLDP_NEAREST_BRIDGE_MAC) / \
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LLDPDUPortID(subtype=LLDPDUPortID.SUBTYPE_INTERFACE_NAME, id='eth0') / \
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LLDPDUChassisID(subtype=LLDPDUChassisID.SUBTYPE_MAC_ADDRESS, id=b'\x06\x05\x04\x03\x02\x01') / \
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LLDPDUTimeToLive() / \
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LLDPDUEndOfLLDPDU()
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assert(len(raw(frm)) == 60)
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assert(len(raw(Ether(raw(frm))[Padding])) == 24)
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frm = Ether(src='01:01:01:01:01:01', dst=LLDP_NEAREST_BRIDGE_MAC) / \
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LLDPDUPortID(subtype=LLDPDUPortID.SUBTYPE_INTERFACE_NAME, id='eth012345678901234567890123') / \
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LLDPDUChassisID(subtype=LLDPDUChassisID.SUBTYPE_MAC_ADDRESS, id=b'\x06\x05\x04\x03\x02\x01') / \
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LLDPDUTimeToLive() / \
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LLDPDUEndOfLLDPDU()
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assert (len(raw(frm)) == 60)
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assert (len(raw(Ether(raw(frm))[Padding])) == 1)
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frm = Ether(src='01:01:01:01:01:01', dst=LLDP_NEAREST_BRIDGE_MAC) / \
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LLDPDUPortID(subtype=LLDPDUPortID.SUBTYPE_INTERFACE_NAME, id='eth0123456789012345678901234') / \
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LLDPDUChassisID(subtype=LLDPDUChassisID.SUBTYPE_MAC_ADDRESS, id=b'\x06\x05\x04\x03\x02\x01') / \
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LLDPDUTimeToLive() / \
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LLDPDUEndOfLLDPDU()
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assert (len(raw(frm)) == 60)
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try:
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Ether(raw(frm))[Padding]
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assert False
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except IndexError:
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pass
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+ strict mode handling - build
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= basic frame structure
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conf.contribs['LLDP'].strict_mode_enable()
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# invalid lenght in LLDPDUEndOfLLDPDU
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try:
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frm = Ether()/LLDPDUChassisID(id='slartibart')/LLDPDUPortID(id='42')/LLDPDUTimeToLive()/LLDPDUEndOfLLDPDU(_length=8)
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frm.build()
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assert False
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except LLDPInvalidLengthField:
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pass
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# missing chassis id
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try:
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frm = Ether()/LLDPDUChassisID()/LLDPDUPortID(id='42')/LLDPDUTimeToLive()/LLDPDUEndOfLLDPDU()
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frm.build()
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assert False
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except LLDPInvalidLengthField:
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pass
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# missing management address
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try:
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frm = Ether()/LLDPDUChassisID(id='slartibart')/LLDPDUPortID(id='42')/LLDPDUTimeToLive()/LLDPDUManagementAddress()/LLDPDUEndOfLLDPDU()
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frm.build()
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assert False
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except LLDPInvalidLengthField:
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pass
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+ strict mode handling - dissect
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= basic frame structure
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conf.contribs['LLDP'].strict_mode_enable()
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# missing PortIDTLV
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try:
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frm = Ether() / LLDPDUChassisID(id='slartibart') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidFrameStructure:
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pass
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# invalid order
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try:
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frm = Ether() / LLDPDUPortID(id='42') / LLDPDUChassisID(id='slartibart') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidFrameStructure:
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pass
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# layer LLDPDUPortID occures twice
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try:
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frm = Ether() / LLDPDUChassisID(id='slartibart') / LLDPDUPortID(id='42') / LLDPDUPortID(id='23') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidFrameStructure:
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pass
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# missing LLDPDUEndOfLLDPDU
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try:
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frm = Ether() / LLDPDUChassisID(id='slartibart') / LLDPDUPortID(id='42') / \
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LLDPDUPortID(id='23') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidFrameStructure:
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pass
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conf.contribs['LLDP'].strict_mode_disable()
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frm = Ether()/LLDPDUChassisID()/LLDPDUTimeToLive()/LLDPDUEndOfLLDPDU()
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frm = Ether(frm.build())
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= length fields / value sizes checks
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conf.contribs['LLDP'].strict_mode_enable()
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# missing chassis id => invalid length
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try:
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frm = Ether() / LLDPDUChassisID() / LLDPDUPortID(id='42') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidLengthField:
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pass
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# invalid lenght in LLDPDUEndOfLLDPDU
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try:
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frm = Ether()/LLDPDUChassisID(id='slartibart')/LLDPDUPortID(id='42')/LLDPDUTimeToLive()/LLDPDUEndOfLLDPDU(_length=8)
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Ether(frm.build())
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assert False
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except LLDPInvalidLengthField:
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pass
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# invalid management address
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try:
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frm = Ether() / LLDPDUChassisID(id='slartibart') / LLDPDUPortID(id='42') / LLDPDUTimeToLive() / LLDPDUManagementAddress() / LLDPDUEndOfLLDPDU()
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Ether(frm.build())
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assert False
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except LLDPInvalidLengthField:
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pass
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conf.contribs['LLDP'].strict_mode_disable()
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frm = Ether() / LLDPDUChassisID(id='slartibart') / LLDPDUPortID(id='42') / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU()
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frm = Ether(frm.build())
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frm = Ether() / LLDPDUChassisID() / LLDPDUPortID() / LLDPDUTimeToLive() / LLDPDUEndOfLLDPDU(_length=8)
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frm = Ether(frm.build())
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= test attribute values
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conf.contribs['LLDP'].strict_mode_enable()
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frm = Ether(src='01:01:01:01:01:01', dst=LLDP_NEAREST_BRIDGE_MAC)/ \
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LLDPDUChassisID(subtype=LLDPDUChassisID.SUBTYPE_MAC_ADDRESS, id=b'\x06\x05\x04\x03\x02\x01') / \
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LLDPDUPortID(subtype=LLDPDUPortID.SUBTYPE_MAC_ADDRESS, id=b'\x01\x02\x03\x04\x05\x06')/\
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LLDPDUTimeToLive()/\
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LLDPDUSystemName(system_name='things will')/\
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LLDPDUSystemCapabilities(telephone_available=1,
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router_available=1,
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telephone_enabled=1,
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router_enabled=1)/\
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LLDPDUManagementAddress(
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management_address_subtype=LLDPDUManagementAddress.SUBTYPE_MANAGEMENT_ADDRESS_IPV4,
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management_address='1.2.3.4',
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interface_numbering_subtype=LLDPDUManagementAddress.SUBTYPE_INTERFACE_NUMBER_IF_INDEX,
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interface_number=23,
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object_id='burn') / \
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LLDPDUSystemDescription(description='without tests.') / \
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LLDPDUPortDescription(description='always!') / \
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LLDPDUEndOfLLDPDU()
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frm = Ether(frm.build())
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assert str2mac(frm[LLDPDUChassisID].id) == '06:05:04:03:02:01'
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assert str2mac(frm[LLDPDUPortID].id) == '01:02:03:04:05:06'
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sys_capabilities = frm[LLDPDUSystemCapabilities]
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assert sys_capabilities.reserved_5_available == 0
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assert sys_capabilities.reserved_4_available == 0
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assert sys_capabilities.reserved_3_available == 0
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assert sys_capabilities.reserved_2_available == 0
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assert sys_capabilities.reserved_1_available == 0
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assert sys_capabilities.two_port_mac_relay_available == 0
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assert sys_capabilities.s_vlan_component_available == 0
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assert sys_capabilities.c_vlan_component_available == 0
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assert sys_capabilities.station_only_available == 0
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assert sys_capabilities.docsis_cable_device_available == 0
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assert sys_capabilities.telephone_available == 1
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assert sys_capabilities.router_available == 1
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assert sys_capabilities.wlan_access_point_available == 0
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assert sys_capabilities.mac_bridge_available == 0
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assert sys_capabilities.repeater_available == 0
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assert sys_capabilities.other_available == 0
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assert sys_capabilities.reserved_5_enabled == 0
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assert sys_capabilities.reserved_4_enabled == 0
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assert sys_capabilities.reserved_3_enabled == 0
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assert sys_capabilities.reserved_2_enabled == 0
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assert sys_capabilities.reserved_1_enabled == 0
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assert sys_capabilities.two_port_mac_relay_enabled == 0
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assert sys_capabilities.s_vlan_component_enabled == 0
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assert sys_capabilities.c_vlan_component_enabled == 0
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assert sys_capabilities.station_only_enabled == 0
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assert sys_capabilities.docsis_cable_device_enabled == 0
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assert sys_capabilities.telephone_enabled == 1
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assert sys_capabilities.router_enabled == 1
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assert sys_capabilities.wlan_access_point_enabled == 0
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assert sys_capabilities.mac_bridge_enabled == 0
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assert sys_capabilities.repeater_enabled == 0
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assert sys_capabilities.other_enabled == 0
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assert frm[LLDPDUManagementAddress].management_address == b'1.2.3.4'
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assert frm[LLDPDUSystemName].system_name == b'things will'
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assert frm[LLDPDUManagementAddress].object_id == b'burn'
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assert frm[LLDPDUSystemDescription].description == b'without tests.'
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assert frm[LLDPDUPortDescription].description == b'always!'
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