1 # DNS OPT Resource Record unit tests 2 # 3 # Type the following command to launch start the tests: 4 # $ sudo bash test/run_tests -t test/edns0.uts -F 5 6 + Test EDNS0 rdata 7 8 = EDNS0TLV(), basic instanciation 9 tlv = EDNS0TLV() 10 raw(tlv) == b'\x00\x00\x00\x00' 11 12 = EDNS0TLV(), check parameters 13 tlv = EDNS0TLV(optcode=42, optlen=12, optdata="edns0tlv") 14 raw(tlv) == b'\x00*\x00\x0cedns0tlv' 15 16 = EDNS0TLV(), check computed optlen 17 tlv = EDNS0TLV(optdata="edns0tlv") 18 raw(tlv) == b'\x00\x00\x00\x08edns0tlv' 19 20 = EDNS0TLV(), dissection 21 tlv = EDNS0TLV(b'\x00*\x00\x08edns0tlv') 22 tlv.optcode == 42 and tlv.optlen == 8 and tlv.optdata == b"edns0tlv" 23 24 + Test OPT RR 25 26 = DNSRROPT(), basic instanciation 27 opt = DNSRROPT() 28 raw(opt) == b'\x00\x00)\x10\x00\x00\x00\x80\x00\x00\x00' 29 30 = DNSRROPT(), check parameters 31 opt = DNSRROPT(rrname="rropt", type=42, rclass=123, extrcode=1, version=2, z=3, rdlen=4, rdata=[EDNS0TLV()]) 32 raw(opt) == b'\x05rropt\x00\x00*\x00{\x01\x02\x00\x03\x00\x04\x00\x00\x00\x00' 33 34 = DNSRROPT() & EDN0TLV(), check parameters 35 opt = DNSRROPT(rrname="rropt", type=42, rclass=123, extrcode=1, version=2, z=3, rdlen=4, rdata=[EDNS0TLV(optcode=42, optlen=12, optdata="edns0tlv")]) 36 raw(opt) == b'\x05rropt\x00\x00*\x00{\x01\x02\x00\x03\x00\x04\x00*\x00\x0cedns0tlv' 37 38 = DNSRROP(), dissection 39 opt = DNSRROPT(b'\x05rropt\x00\x00*\x00{\x01\x02\x00\x03\x00\x0c\x00*\x00\x0cedns0tlv') 40 opt.rrname == b"rropt." and opt.rdlen == 12 and opt.rdata[0].optcode == 42 and opt.rdata[0].optdata == b"edns0tlv" 41 42 + Test EDNS-PING 43 44 = EDNS-PING - basic instanciation 45 tlv = EDNS0TLV(optcode=5, optdata=b"\x00\x11\x22\x33") 46 raw(tlv) == b'\x00\x05\x00\x04\x00\x11"3' 47 48 #= EDNS-PING - Live test 49 #~ netaccess 50 #* NB: 85.17.219.217 and www.edns-ping.org seem down 51 #old_debug_dissector = conf.debug_dissector 52 #conf.debug_dissector = False 53 #r = sr1(IP(dst="85.17.219.217")/UDP()/DNS(qd=[DNSQR(qtype="A", qname="www.edns-ping.org.")], ar=[DNSRROPT(z=0, rdata=[EDNS0TLV(optcode="PING", optdata=b"\x00\x11\x22\x33")])]), timeout=1) 54 #conf.debug_dissector = old_debug_dissector 55 #len(r.ar) and r.ar.rdata[0].optcode == 4 # XXX: should be 5 56 57 + Test DNS Name Server Identifier (NSID) Option 58 59 = NSID- basic instanciation 60 tlv = EDNS0TLV(optcode=2, optdata="") 61 raw(tlv) == b'\x00\x02\x00\x00' 62 63 = NSID - Live test 64 ~ netaccess 65 old_debug_dissector = conf.debug_dissector 66 conf.debug_dissector = False 67 r = sr1(IP(dst="l.root-servers.net")/UDP()/DNS(qd=[DNSQR(qtype="SOA", qname=".")], ar=[DNSRROPT(z=0, rdata=[EDNS0TLV(optcode="NSID")])]), timeout=1) 68 conf.debug_dissector = old_debug_dissector 69 len(r.ar) and DNSRROPT in r.ar and len(r.ar[DNSRROPT].rdata) and len([x for x in r.ar[DNSRROPT].rdata if x.optcode == 3]) 70
