unbound/libunbound/python/examples/dnssec_test.py

   1 #!/usr/bin/env python
   2 from unbound import ub_ctx, RR_TYPE_A, RR_TYPE_RRSIG, RR_TYPE_NSEC, RR_TYPE_NSEC3
   3 import ldns
   4
   5 def dnssecParse(domain, rrType=RR_TYPE_A):
   6     print("Resolving domain", domain)
   7     s, r = resolver.resolve(domain)
   8     print("status: %s, secure: %s, rcode: %s, havedata: %s, answer_len; %s" % (s, r.secure, r.rcode_str, r.havedata, r.answer_len))
   9
  10     s, pkt = ldns.ldns_wire2pkt(r.packet)
  11     if s != 0:
  12         raise RuntimeError("Error parsing DNS packet")
  13
  14     rrsigs = pkt.rr_list_by_type(RR_TYPE_RRSIG, ldns.LDNS_SECTION_ANSWER)
  15     print("RRSIGs from answer:", rrsigs)
  16
  17     rrsigs = pkt.rr_list_by_type(RR_TYPE_RRSIG, ldns.LDNS_SECTION_AUTHORITY)
  18     print("RRSIGs from authority:", rrsigs)
  19
  20     nsecs = pkt.rr_list_by_type(RR_TYPE_NSEC, ldns.LDNS_SECTION_AUTHORITY)
  21     print("NSECs:", nsecs)
  22
  23     nsec3s = pkt.rr_list_by_type(RR_TYPE_NSEC3, ldns.LDNS_SECTION_AUTHORITY)
  24     print("NSEC3s:", nsec3s)
  25
  26     print("---")
  27
  28
  29 resolver = ub_ctx()
  30 resolver.add_ta(".   IN DS   19036 8 2 49AAC11D7B6F6446702E54A1607371607A1A41855200FD2CE1CDDE32F24E8FB5")
  31
  32 dnssecParse("nic.cz")
  33 dnssecParse("nonexistent-domain-blablabla.cz")
  34 dnssecParse("nonexistent-domain-blablabla.root.cz")
  35