def test_withdraw_construct(self): nlri_hex = b'\x98\x80\x00\x00\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x00\x00\x12\x00' \ b'\x04\x98\x80\x00\x00\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x01\x00\x12\x00\x00' nlri_list = [ {'rd': '100:12', 'prefix': '2010:0:12:4::/64'}, {'rd': '100:12', 'prefix': '2010:1:12::/64'} ] self.assertEqual(nlri_hex, IPv6MPLSVPN.construct(value=nlri_list, iswithdraw=True))
def test_update_construct(self): nlri_hex = b'\x98\x00\x03\x61\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x00\x00\x12\x00\x04' \ b'\x98\x00\x03\x71\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x01\x00\x12\x00\x00' nlri_list = [ {'label': [54], 'rd': '100:12', 'prefix': '2010:0:12:4::/64'}, {'label': [55], 'rd': '100:12', 'prefix': '2010:1:12::/64'} ] self.assertEqual(nlri_hex, IPv6MPLSVPN.construct(value=nlri_list))
def test_withdraw_construct(self): nlri_hex = b'\x98\x80\x00\x00\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x00\x00\x12\x00' \ b'\x04\x98\x80\x00\x00\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x01\x00\x12\x00\x00' nlri_list = [{ 'rd': '100:12', 'prefix': '2010:0:12:4::/64' }, { 'rd': '100:12', 'prefix': '2010:1:12::/64' }] self.assertEqual( nlri_hex, IPv6MPLSVPN.construct(value=nlri_list, iswithdraw=True))
def test_update_construct(self): nlri_hex = b'\x98\x00\x03\x61\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x00\x00\x12\x00\x04' \ b'\x98\x00\x03\x71\x00\x00\x00\x64\x00\x00\x00\x0c\x20\x10\x00\x01\x00\x12\x00\x00' nlri_list = [{ 'label': [54], 'rd': '100:12', 'prefix': '2010:0:12:4::/64' }, { 'label': [55], 'rd': '100:12', 'prefix': '2010:1:12::/64' }] self.assertEqual(nlri_hex, IPv6MPLSVPN.construct(value=nlri_list))
def construct(cls, value): """Construct a attribute :param value: python dictionary {'afi_safi': (1,128), 'nexthop': {}, 'nlri': [] """ afi, safi = value['afi_safi'] if afi == afn.AFNUM_INET: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nexthop_hex = cls.construct_mpls_vpn_nexthop(value['nexthop']) nlri_hex = IPv4MPLSVPN.construct(value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) +\ struct.pack('!B', len(nexthop_hex)) + nexthop_hex + b'\x00' + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_FSPEC_RULE: # BGP Flow spec try: try: nexthop = netaddr.IPAddress(value['nexthop']).packed except netaddr.core.AddrFormatError: nexthop = '' nlri = IPv4FlowSpec.construct(value=value['nlri']) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + \ struct.pack('!B', len(nexthop)) + nexthop + b'\x00' + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value except Exception as e: raise excep.ConstructAttributeFailed( reason='failed to construct attributes: %s' % e, data=value) else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value) # ipv6 unicast elif afi == afn.AFNUM_INET6: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nexthop_hex = cls.construct_mpls_vpn_nexthop(value['nexthop']) nlri_hex = IPv6MPLSVPN.construct(value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) +\ struct.pack('!B', len(nexthop_hex)) + nexthop_hex + b'\x00' + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_UNICAST: nexthop_len = 16 nexthop_bin = netaddr.IPAddress(value['nexthop']).packed if value.get('linklocal_nexthop'): nexthop_len *= 2 nexthop_bin += netaddr.IPAddress( value['linklocal_nexthop']).packed nlri_bin = IPv6Unicast.construct(nlri_list=value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + struct.pack('!B', nexthop_len) + \ nexthop_bin + b'\x00' + nlri_bin return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID)\ + struct.pack('!B', len(attr_value)) + attr_value # for l2vpn elif afi == afn.AFNUM_L2VPN: if safi == safn.SAFNUM_EVPN: nexthop_bin = netaddr.IPAddress(value['nexthop']).packed nlri_bin = EVPN.construct(nlri_list=value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + struct.pack('!B', len(nexthop_bin)) + \ nexthop_bin + b'\x00' + nlri_bin return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID)\ + struct.pack('!B', len(attr_value)) + attr_value else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value)
def construct(cls, value): """Construct a attribute :param value: python dictionary {'afi_safi': (1,128), 'withdraw': [] """ afi, safi = value['afi_safi'] if afi == afn.AFNUM_INET: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nlri = IPv4MPLSVPN.construct(value['withdraw'], iswithdraw=True) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None elif safi == safn.SAFNUM_FSPEC_RULE: try: nlri_list = value.get('withdraw') or [] if not nlri_list: return None nlri_hex = b'' for nlri in nlri_list: nlri_hex += IPv4FlowSpec.construct(value=nlri) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value except Exception: raise excep.ConstructAttributeFailed( reason='failed to construct attributes', data=value ) else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value) elif afi == afn.AFNUM_INET6: if safi == safn.SAFNUM_UNICAST: nlri = IPv6Unicast.construct(nlri_list=value['withdraw']) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_LAB_VPNUNICAST: nlri = IPv6MPLSVPN.construct(value=value['withdraw'], iswithdraw=True) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None # for l2vpn elif afi == afn.AFNUM_L2VPN: # for evpn if safi == safn.SAFNUM_EVPN: nlri = EVPN.construct(nlri_list=value['withdraw']) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value)
def construct(cls, value): """Construct a attribute :param value: python dictionary {'afi_safi': (1,128), 'nexthop': {}, 'nlri': [] """ afi, safi = value['afi_safi'] if afi == afn.AFNUM_INET: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nexthop_hex = cls.construct_mpls_vpn_nexthop(value['nexthop']) nlri_hex = IPv4MPLSVPN.construct(value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) +\ struct.pack('!B', len(nexthop_hex)) + nexthop_hex + b'\x00' + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_FSPEC_RULE: # BGP Flow spec try: try: nexthop = netaddr.IPAddress(value['nexthop']).packed except netaddr.core.AddrFormatError: nexthop = '' nlri_hex = b'' for nlri in value['nlri']: nlri_hex += IPv4FlowSpec.construct(value=nlri) if nlri_hex: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + \ struct.pack('!B', len(nexthop)) + nexthop + b'\x00' + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value except Exception as e: raise excep.ConstructAttributeFailed( reason='failed to construct attributes: %s' % e, data=value ) else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value) # ipv6 unicast elif afi == afn.AFNUM_INET6: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nexthop_hex = cls.construct_mpls_vpn_nexthop(value['nexthop']) nlri_hex = IPv6MPLSVPN.construct(value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) +\ struct.pack('!B', len(nexthop_hex)) + nexthop_hex + b'\x00' + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_UNICAST: nexthop_len = 16 nexthop_bin = netaddr.IPAddress(value['nexthop']).packed if value.get('linklocal_nexthop'): nexthop_len *= 2 nexthop_bin += netaddr.IPAddress(value['linklocal_nexthop']).packed nlri_bin = IPv6Unicast.construct(nlri_list=value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + struct.pack('!B', nexthop_len) + \ nexthop_bin + b'\x00' + nlri_bin return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID)\ + struct.pack('!B', len(attr_value)) + attr_value # for l2vpn elif afi == afn.AFNUM_L2VPN: if safi == safn.SAFNUM_EVPN: nexthop_bin = netaddr.IPAddress(value['nexthop']).packed nlri_bin = EVPN.construct(nlri_list=value['nlri']) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + struct.pack('!B', len(nexthop_bin)) + \ nexthop_bin + b'\x00' + nlri_bin return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID)\ + struct.pack('!B', len(attr_value)) + attr_value else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value)
def construct(cls, value): """Construct a attribute :param value: python dictionary {'afi_safi': (1,128), 'withdraw': [] """ afi, safi = value['afi_safi'] if afi == afn.AFNUM_INET: if safi == safn.SAFNUM_LAB_VPNUNICAST: # MPLS VPN nlri = IPv4MPLSVPN.construct(value['withdraw'], iswithdraw=True) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None elif safi == safn.SAFNUM_FSPEC_RULE: try: nlri_list = value.get('withdraw') or [] if not nlri_list: return None nlri_hex = b'' for nlri in nlri_list: nlri_hex += IPv4FlowSpec.construct(value=nlri) attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri_hex return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value except Exception: raise excep.ConstructAttributeFailed( reason='failed to construct attributes', data=value ) else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value) elif afi == afn.AFNUM_INET6: if safi == safn.SAFNUM_UNICAST: nlri = IPv6Unicast.construct(nlri_list=value['withdraw']) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value elif safi == safn.SAFNUM_LAB_VPNUNICAST: nlri = IPv6MPLSVPN.construct(value=value['withdraw'], iswithdraw=True) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None # for l2vpn elif afi == afn.AFNUM_L2VPN: # for evpn if safi == safn.SAFNUM_EVPN: nlri = EVPN.construct(nlri_list=value['withdraw']) if nlri: attr_value = struct.pack('!H', afi) + struct.pack('!B', safi) + nlri return struct.pack('!B', cls.FLAG) + struct.pack('!B', cls.ID) \ + struct.pack('!B', len(attr_value)) + attr_value else: return None else: raise excep.ConstructAttributeFailed( reason='unsupport this sub address family', data=value)